ПОРШЕНЬ ДЛЯ ДВИГАТЕЛЯ ВНУТРЕННЕГО СГОРАНИЯ, В ЧАСТНОСТИ, ДЛЯ БОЛЬШОГО СУДОВОГО ДИЗЕЛЬНОГО ДВИГАТЕЛЯ

Поршень для ДВС, который в качестве элемента для передачи усилия между поршнем и штоком поршня имеет кольцевое ребро, составляющее единое целое с днищем поршня, причем в кольцевом районе между боковой стенкой поршня, отступающей вниз от днища поршня и снабженной наружными поршневыми кольцами, и ребром выполнены опорные элементы, которые заканчиваются внизу конической стенкой, имеющей каналы, простирающиеся, по существу, параллельно оси поршня, через которые может протекать охлаждающее масло, и где коническая стенка при взгляде на осевое сечение поршня соединяется с боковой стенкой при помощи закругленной части стенки. Для уменьшения чувствительности к динамическим напряжениям в области перехода между опорными элементами и боковой стенкой боковая стенка имеет в закругленной части стенки уменьшенную толщину стенки. 2 з.п. ф-лы, 2 ил.

ДBИГATEЛЬ BHУTPEHHEГO CГOPAHИЯ C MACЛЯHЫM OXЛAЖДEHИEM

Двигатель внутреннего сгорания с масляным охлаждением

Использование: двигатели внутреннего сгорания с масляным охлаждением, обеспечение надежности высокотемпературного охлаждения. Сущность изобретения: двига20 Т цЪF с 1 Л VV ff V V V // V ЦЫ71ГГ1(П V v rs/ r // / /« ,з Я ..f .. ... f. F t i . т Т т j т- , /J. м. :. V // V 1(П rs/ тель 1 внутреннего сгорания с масляным охлаждением содержит масляный поддон 6, образующий общую масляную ванну 7 для циркуляционного контура 2 смазочного масла и циркуляционного контура 4 охлаждающего масла, причем циркуляционные контуры 2, 4 имеют собственные масляные насосы 3,5, и циркуляционный контур 2 смазывающего масла, содержащий масляный фильтр 9 и масляный радиатор 8, подсоединен к циркуляционному контуру охлаждающего масла, выходящему из масляной , ванны 7. Для достижения рационального и работоспособного .охлаждения высокотемпературной среды от циркуляционного контура 2 смазочного масла после масляного радиатора 8 ответвляется вспомогательный циркуляционный контур 10, который в виде дополнительного циркуляционного ...

Verfahren zum Prüfen von Düsen von Verbrennungsmotoren

Hubkolben-Brennkraftmaschine

Hubkolben-Brennkraftmaschine mit einer Ölversorgungseinrichtung für eine Kolbenkühlung, mit einem Hauptölkanal der über ein hydraulisches Ventil mit einem Kolbenkühlkanal mit zumindest einer Ölspritzdüse verbindbar ist, wobei ein Öldruck in dem Hauptölkanal auf einen schiebebeweglich in dem hydraulischen Ventil angeordneten Kolben gegen eine Federkraft einer, in einer hydraulischen Kammer angeordneten Feder wirkt und den Kolben bei einem Öldruck größer als die Federkraft in Richtung der Feder verschiebt und der Kolben eine erste Bohrung in einem Ventilgehäuse freigibt, die den Hauptölkanal mit dem Kolbenkühlkanal Öl führend verbindet, wobei ein elektromechanisches Ventil vorgesehen ist, mit dem der Hauptölkanal und die Kammer Öl führend verbindbar ist, wobei Bohrung aufweist, die den Hauptölkanal und den Kolbenkühlkanal Öl führend verbindet, wenn in der Kammer der Öldruck und der Federdruck auf den Kolben wirken.Durch die erfindungsgemäße Ausgestaltung der der Hubkolben-Brennkraftmaschine ...

Kolbenkühlungsvorrichtung für eine mehrzylindrige Brennkraftmaschine

Kühlstruktur für einen Fahrzeuggenerator

HUBKOLBENBRENNKRAFTMASCHINE MIT INNERER KUEHLUNG DER ARBEITSKOLBEN DURCH SCHMIEROEL

Mounting a cooling nozzle on an engine block

ENGINE COOLING SYSTEM

Piston oil spray cooling system with two nozzles

An oil spray system for an internal combustion engine comprises a first nozzle (40) adapted to spray oil at the underside of a piston, for cooling, and a second nozzle (46) adapted to spray oil directly at the cylinder bore in which the piston reciprocates, for lubrication. Each nozzle may have a dedicated oil feed from the lubrication system of the engine, enabling the nozzles to be operated independently of each other. Alternatively they may share an oil feed and a solenoid valve may be provided to disable one nozzle while the other is operative.

Method for forming a through-hole through the circumferential wall of a metal pipe and a metal pipe worked by the said method

Engine lubrication system & diversion means thereof

A lubrication system 10 for an engine, an a method of operating such a system, comprises a lubricant sump 11, an electrically driven pump 12 which pumps lubricant along a feed line 13 to lubrication positions within the engine, and a lubricant conditioner 15 and whereby pump 12 and a diverter valve 18 are controlled by a system controller 16 so as to selectively divert at least a portion of the lubricant from the feed line 13 to the conditioner 15. Likewise, diverter valve 18 is able to divert lubricant in the feed line 13 to a different outlet. A diverter valve (see fig 2) and a lubricant sump including mounting means for an electric pump and a conditioner are also disclosed.

Articulated piston

An articulated piston (30) for use in heavy duty diesel engines includes a piston crown (10) having an outer, surface, a peripheral pending side wall and an inner surface having a pair of pin bosses (14) extending downwardly from the inner surface with the inner surface and the pin bosses (14) defining a hollow cooling cavity opening downwardly and a piston skirt (20). The piston skirt (20) includes a first longitudinal plane containing a pair of diametrically opposed bores (21) for receiving a wrist pin for connection to the bosses (14) of the crown (10). It also has two semi-cylindrical thrust and non thrust surfaces with the thickness of the non thrust surface being less than a thickness of the thrust surface. A second longitudinal plane, perpendicular to the first plant divides the piston skirt (20) into four peripheral quarters. One of the quarters contains a cooling medium inlet through which a cooling medium, injected by a nozzle, can pass and impinge against the hollow cavity of ...

Method to operate an electrically driven oil piston cooling jets valve

A method to operate an electrically driven oil piston cooling jets (OPCJ) valve 20 of an internal combustion engine 1, comprises the steps of cyclically performing a control procedure able to generate an opening request for the OPCJ valve, of opening or keeping opened the OPCJ valve when the control procedure generates an opening request, and of closing or keeping closed the OPCJ valve when the control procedure does not generate an opening request. The control procedure comprises the steps of determining a value (ET) of a control parameter related to an engine torque, and of generating an opening request for the OPCJ valve if the control parameter value exceeds a threshold value (ETt). The control parameter may be a brake mean effective pressure. Preferably, the control procedure comprises the further steps of counting a duration (C1) of a closure period and generating an opening request for the OPCJ valve if the closure period duration exceeds a threshold duration (C1t). Advantageously ...

Engine combustion chamber insulating coatings

Heat engine piston and combustion chamber construction enclosing a gas combustion zone, comprising: a piston body having a crown facing said gas combustion zone; combustion chamber surfaces cooperating with said piston to complete enclosure of said zone; and a thermal diffusivity coating on said crown and combustion chamber surfaces having an effective thickness to operate as a thermal diode to restrict heat transfer to said piston body and combustion chamber and to restrict heat transfer to said combustible charge prior to combustion. A method of thermally managing heat generated by an internal combustion engine, the engine having combustion chamber walls for combusting a gaseous mixture of air and fuel, a cooling jacket for cooling said walls, and a piston moveable along a portion of said walls, comprising: increasing the compression ratio of the engine to induce engine-knock for an uncoated chamber; coating at least the crown of the piston of said combustion chamber walls with a low ...

Engine lubrication system

Method to diagnose a fault of an oil piston cooling jets valve

An automotive system (100, fig.1) comprises an internal combustion engine (ICE) 110 including a main oil gallery 13 and an auxiliary oil gallery 20 communicating via an oil piston cooling jets (OPCJ) valve 24, an oil jet nozzle (21, fig.4), pressure sensors 19, 23 located in each of the oil galleries, and an electronic control unit (ECU) 450 which is configured to perform a method to diagnose a fault of the OPCJ valve. The method comprises the steps of: sensing a value of pressure in the main oil gallery; checking whether the OPCJ valve is commanded in a state for opening or closing a communication between the main oil gallery and the auxiliary oil gallery; checking whether a value of pressure in the auxiliary oil gallery exceeds a predetermined threshold pressure value, above which the jet nozzle of the auxiliary oil gallery automatically opens; identifying a fault of the OPCJ valve if the pressure value in the main oil gallery exceeds the threshold value by a predetermined quantity and ...

A vehicle engine assembly

Method to Diagnose a Failure of a Piston Oil-Cooling-Jet Valve of an Engine by Oil Pressure Monitoring.

The invention provides a method to diagnose a failure of an oil piston cooling jet (OPCJ) valve 21 of an internal combustion engine. The OPCJ valve is located in an auxiliary line 20 connecting an engine lubrication line 12 to at least an oil jet for squirting lubricating oil from the engine lubrication line towards a piston surface. The method provides for monitoring the pressure variation in the engine lubrication line due to a switching signal sent to the OPCJ valve. The pressure variation may be compared to a determined pressure target value, and the target value may be determined by one or more parameters of the lubricant in the engine lubrication line, such as pressure and temperature, or from an empirically determined map correlating the target value to one or more operating parameters. The pressure variation may be determined by a pressure sensor 18, and the diagnosis may be executed by a computer program stored on a data carrier 22 associated with an ECU connected to the pressure ...

Improvements in or relating to assemblies comprising a piston having an internal cooling circuit and a connecting-rod pivoted on the piston

... 916,926. Cooling pistons. SOC. CIVILE D'ETUDES MAREP-GROSSHANS-OLLIER. Sept. 29, 1960 [Sept. 29, 1959], No. 33412/60. Class 122 (1). In a piston and connecting-rod assembly the piston 1 is cooled by an internal cooling circuit supplied with liquid from an external source and having an outlet port 14 opening opposite the gudgeon-pin 10 and the connecting-rod 8 is formed with a cavity 15 in which liquid issuing from the outlet port 14 is collected. The piston has an annular chamber 2 supplied through a conduit 7 in the piston skirt with oil or other liquid coolant under pressure. Coolant is supplied to the conduit 7 by a jet, flexible tube or telescopic tubes and a passage 13 in the piston connects the chamber 2 with the outlet port 14. In operation, coolant collects in the cavity 15 when the piston accelerates in one direction and is projected therefrom to cool the underside of the piston head when the piston accelerates in the opposite direction.

COOLING INJECTION NOZZLE WITH A FLAP

Brennkraftmaschine mit Kolbenkühleinrichtung

Die Erfindung betrifft eine Brennkraftmaschine (100) mit zumindest einem Zylinder (2), einem Kolben (3) und einer Kolbenkühleinrichtung (4) mit einem in den Zylinder (2) hineinragenden Ölführungselement (7) und einem Düsenelement (9) mit zumindest einer Düseneintrittsöffnung (91, 91‘) und einer strömungsverbundenen Düsenaustrittsöffnung (92). Im Ölführungselement (7) ist zur Zuführung eines Kühlmediums eine Sacklochausnehmung (8) mit einer durch eine Mittelachse (8a) der Sacklochausnehmung (8) verlaufenden Mittelebene (10) ausgeführt, mit einer ersten Ausnehmungshälfte (81) auf einer dem Kolben (3) zugewandten Seite der Mittelebene (10) und einer zweiten Ausnehmungshälfte (82) auf der abgewandten Seite. Erfindungsgemäß ragt das Düsenelement (9) zumindest so weit in die Sacklochausnehmung (8) hinein, dass sich die zumindest eine Düseneintrittsöffnung (91, 91‘) in der zweiten Ausnehmungshälfte (82) befindet und das Düsenelement (9) einen Düsenabstand (A1) von einem zylinderseitigen Ende ( ...

Verbrennungskraftmaschine mit Ölkanälen

Eine Verbrennungskraftmaschine mit einem Zylinderblock (1) und einem Kurbelgehäuse (2), welches Schottwände (8) zwischen den Zylindern mit Lagern (11) für die Kurbelwelle enthält hat im Kurbelgehäuse (2) beiderseits der Zylinder je einen Ölverteilkanal (18,19) in Längsrichtung, mittels dessen Drucköl den Kurbelwellenlagern (11) und anderen Verbrauchern zugeführt wird. Um bei minimalem Fertigungsaufwand eine gute Ölversorgung aller Verbraucher sicherzustellen, sind die beiden Ölverteilkanäle (18, 19) durch in den Schottwänden (8) verlaufende Querkanäle (23) miteinander verbunden, welche Querkanäle (23) bereits beim Guss des Kurbelgehäuses (2) geschaffen werden. Die Querschnitte der Querkanäle (23) in den an die Ölverteilkanäle (18,19) anschließenden Teilen (24) sind im Wesentlich kreisförmig und in der mittleren Region (25) in Querrichtung abgeflacht.

AIR-COOLED INTERNAL-COMBUSTION ENGINE TO THE DRIVE OF VEHICLES

Brennkraftmaschine mit zumindest einem Zylinder

Die Erfindung betrifft Brennkraftmaschine mit zumindest einem Zylinder (Z) mit zumindest einem in einer Zylinderlaufbuchse (2) hin- und hergehenden Kolben (3), mit einer Kolbenkühleinrichtung (5) zur Kühlung des Kolbens (3), welche zumindest ein Spritzrohr (6) mit einer Spritzdüse (7) aufweist, welche auf eine einem Kurbelraum (16) zugewandte Kolbenunterseite (9) gerichtet ist, wobei das Spritzrohr (6) an der Zylinderlaufbuchse (2) befestigt ist, und wobei das Spritzrohr (6) über eine Verbindungskanalanordnung (K) mit einem im Zylinderblock (1) angeordneten Ölversorgungskanal (11) strömungsverbunden ist. Um eine zuverlässige Kolbenkühlung zu gewährleisten ist vorgesehen, dass die Verbindungskanalanordnung (K) zumindest einen zumindest teilweise in die Zylinderlaufbuchse (2) eingeformten Verbindungskanal (14, 15) aufweist.

INTERNAL COMBUSTION ENGINE

Die Erfindung betrifft eine Brennkraftmaschine (1) in Hubkolbenbauweise mit zumindest einem Kolben (10), der über einen Kolbenbolzen (20) schwenkbar mit einer Pleuelstange (30) verbunden ist, wobei zur Kühlung und Schmierung eine erste Ölspritzdüse (40) und eine zweite Ölspritzdüse (41) auf eine Kolbenunterseite (10a) gerichtet sind, wobei die Ölspritzdüsen (40, 41) mit einer Hauptölgalerie (51) strömungsverbindbar angeordnet sind. Aufgabe der Erfindung ist es in jedem Betriebszustand ausreichende Schmierung sicherzustellen. Das wird dadurch gelöst, dass in einer ersten Zuleitung (44) von der Hauptölgalerie (51) zu der ersten Ölspritzdüse (40) ein druckabhängiges Ventil (46) angeordnet ist, und dass die zweite Ölspritzdüse (41) unabhängig vom Betriebszustand der Brennkraftmaschine (1) ständig mit der Hauptölgalerie (51) strömungsverbunden ist.

BRENNKRAFTMASCHINE MIT INNERER VERBRENNUNG

Die Erfindung betrifft eine Brennkraftmaschine mit innerer Verbrennung mit mindestens einem in einem Zylinder beweglich angeordneten Kolben (1) und einer im Bereich des Kurbelgehäuses angeordneten Düse (6) für jeden Kolben (1), die dazu ausgebildet ist, Öl zur Kühlung und zur Schmierung von unten in den Kolben (1) zu spritzen, wobei der Kolben (1) aufweist: -eine Brennraummulde (2); -einen Kühlkanal (3), der ringförmig um die Brennraummulde angeordnet ist; -eine Eintrittsöffnung (9) in den Kühlkanal (3), durch die das Öl in den Kühlkanal (3) eingespritzt werden kann; -mindestens eine Austrittsöffnung (10, 16) aus dem Kühlkanal (3); und -ein Rückhalteblech (12, 17), wobei zwischen dem Rückhalteblech (12, 17) und dem Kolbenboden (2a) ein Raum gebildet wird, in den die Austrittsöffnung (10, 16) mündet, und wobei im Rückhalteblech (12, 17) eine Öffnung (13, 18) für den Rückfluß des Öls gebildet ist.

DEVICE FOR THE FILTRATION OF LIQUIDS WITH A SPIRAL FILTERELEMENT

SPRAYING NOZZLE FOR PISTON COOLING WITH AN INTERNAL-COMBUSTION ENGINE

PLUG-ON COOLING OIL NOZZLE

HIGH OUTPUT OIL-COOLED FLOATING PISTON

ENGINE PISTON ASSEMBLY AND FORGED PISTON MEMBER THEREFOR HAVING A COOLING RECESS

Controlled leakage valve for piston cooling nozzle

SEALING AND COOLING OF PISTON-TYPE MECHANISMS AND SYSTEM FOR CARRYING OUT THE SAME

IMPROVED TWO CYCLE, OPPOSED-PISTON INTERNAL COMBUSTION ENGINE

PISTON COOLING OIL DELIVERY TUBE ASSEMBLY

PISTON COOLING OIL DELIVERY TUBE ASSEMBLY A piston cooling oil delivery tube assembly for an internal combustion engine for use in directing cooling oil from a manifold into the coolant opening of an associated piston is formed with a rigid bracket and nozzle assembly attachable to a cylinder liner and forming a nonflexible prealigned portion of the coolant delivery tube passage and a connecting tube member forming a connector portion of limited flexibility between the cylinder liner and the crankcase mounted manifold. Various other features are also disclosed.

LUBRICATING SYSTEM AND METHOD FOR TURBOCHARGED ENGINES

LUBRICATING SYSTEM AND METHOD FOR TURBOCHARGED ENGINES An engine comprises a pump adapted to communicate lubricating oil from the crank case thereof to a directional control valve. Upon engine start-up, the valve is conditioned to communicate oil through a filter and to a first manifold which, in turn, communicates with the crankshaft and rod bearings of the engine. Simultaneously therewith, cooled but unfiltered oil is communicated directly to bearings rotatably mounting a shaft in a turbocharger, mounted on the engine. After start-up, the valve will shift to further communicate unfiltered oil directly to a second manifold which, in turn, communicates with a plurality of Jets for the purpose of cooling the pistons employed in the engine. The shifted valve will further function to permit communication of oil through the filter to the bearings of the turbocharger and to the crankshaft and rod bearings of the engine.

PISTON COOLING OIL DELIVERY TUBE ASSEMBLY

HIGH OUTPUT OIL COOLED FLOATING PISTON

Kolbenkühleinrichtung, insbesondere für Verbrennungskraftmaschinen.

Verbrennungsmotor.

Kolbenkühleinrichtung für Brennkraftmaschinen

Flüssigkeitsgekühlter Kolben mit Kolbenzapfen, insbesondere für Brennkraftmaschinen.

Kühleinrichtung für hin- und hergehende Kolben.

Vorrichtung zur Bespritzung der Kolben mit Öl in einem Verbrennungsmotor

PISTON DE MACHINE THERMIQUE A REFROIDISSEMENT PAR LIQUIDE.

Brennkraftmaschine mit Düsenanordnung zur Kühlung und Schmierung der Kolben-Pleuel-Baugruppe.

Die Erfindung betrifft eine Brennkraftmaschine mit wenigstens einem Zylinder und einem darin beweglich gelagerten Kolben (30), der mit einem Ende einer Pleuelstange (2) gelenkig verbunden ist, und einen den Brennraum abschließenden ersten Kolbenboden aufweist, der muldenförmig ausgebildet sein kann, und einen dem Pleuel zugewandten zweiten Kolbenboden, wobei zwischen dem ersten und zweiten Kolbenboden ein Hohlraum (31) besteht, und wobei mindestens zwei separate Ölzuführungen (41, 42) vorgesehen sind, um das Ol einerseits dem Hohlraum (31) des Kolbens (30) und anderseits der Verbindungsstelle zwischen Kolben (30) und Pleuelstange zuzuführen.

Captive screw nozzle

Piston cooling nozzle solenoid electric valve

Cooling nozzle of engine piston

Piston cooling injection system

SYSTEM OF LUBRICATION Of an INTERNAL COMBUSTION ENGINE

Device to lubricate the axis of piston of the internal combustion engines at two times

SYSTEM AND PROCESS OF GREASING FOR ENGINES HAVE TURBO-COMPRESSOR

JET OF COOLING HAS PISTON

Improvements with the cooling of the pistons

Means for cooling the piston of an internal combustion engine

Improvements with the pistons

Piston, in particular for internal combustion engines, preferably for engines at two times

A POWER SYSTEM FOR OIL NOZZLE FOR AN INTERNAL COMBUSTION

Piston cooling device for internal combustion engine, has jet nozzles integrated to common supply manifold with which rigid assembly is formed, where assembly is associated to fixing unit for being fixed directly to engine block

Un dispositif de refroidissement selon l'invention comprend au moins une rampe d'alimentation commune (5a) portant une série de gicleurs (1a, 2a, 3a, 4a) en formant un ensemble mécaniquement rigide (6a), avec des moyens de fixation (61, 62, 63) pour la fixation dans le moteur, et avec des moyens de connexion hydraulique (7a) pour la connexion hydraulique à un circuit d'alimentation prévu dans le moteur. L'ensemble mécaniquement rigide (6a) se fixe dans le bloc-moteur, depuis la face inférieure, les pattes de fixation (61-63) se fixant sur des zones facilement accessibles du bloc-moteur avant adaptation du carter inférieur. Les moyens de connexion (7a) se fixent dans le carter inférieur, et se connectent en sortie du filtre à huile par un clapet commun (22). On peut ainsi adapter un dispositif de refroidissement pour pistons de moteur à combustion interne, sans avoir à modifier la structure du bloc-moteur.

Cooling splasher for motor vehicle internal combustion engine has housing with bored stub for connection to fluid feed and two outlet hoses

Un gicleur selon l'invention comporte un corps de gicleur (2) à partie pénétrante (3) conformée pour s'engager axialement dans un alésage du moteur et pour recevoir un fluide de refroidissement arrivant par ledit alésage. Une structure de sortie (5) comporte deux tubes de sortie (6, 7), chaque tube de sortie (6, 7) étant cintré de façon appropriée pour créer deux jets de fluide de refroidissement et pour les diriger vers deux zones de refroidissement respectives distinctes dans un piston de moteur.

Cooling system for artillery gun barrel or surfaces subject to periodic heating, has coolant spray head which moves to spray barrel interior when breech block is opened and moves away before reloading

Cet appareil comprend : (i) une source (12) d'agent réfrigérant; (ii) des moyens (4) d'envoi de l'agent réfrigérant destinés à envoyer ledit agent réfrigérant au contact de ladite surface; et (iii) des moyens (6, 10, 14) pour transférer ledit agent réfrigérant de la source auxdits moyens d'envoi de l'agent réfrigérant au contact de ladite surface. Application au refroidissement des pièces d'artillerie.

ADJUSTING DEVICE OF COOLING TO the OIL OF the PISTON Of an INTERNAL COMBUSTION ENGINE HAS PISTON

Valve for jet nozzle, has elastically deformable portion pushing rounded portion, forming valve piece, against annular valve seat to seal passage between channel whose end constitutes seat and distribution channel

Dispositif de soupape du type destiné à coopérer avec un siège (35) de forme annulaire qui équipe le canal (34) d'écoulement d'un fluide pratiqué dans un corps (30), il consiste en une pièce (2) présentant d'un côté une partie en forme de dôme destinée à constituer clapet en étant apte à porter sur le siège (35), et du côté opposé, une partie déformable élastiquement, configurée pour pouvoir prendre appui sur un élément (36) du corps (30).

DEVICE FOR PROJECTING A FLUID AND COOLING NOZZLE COMPRISING SUCH A DEVICE

Gicleur de refroidissement de piston de moteur à combustion interne comportant un corps de gicleur (2) muni d'un orifice latéral et un tube de projection (4), ledit tube de projection (4) comportant une première portion tubulaire (10) et une deuxième portion tubulaire (12), la première portion tubulaire (10) comportant une première extrémité connectée au corps de gicleur (2) au niveau de l'orifice latéral du corps de gicleur (2) et une deuxième extrémité munie d'un orifice, la deuxième portion tubulaire (12) comportant une première extrémité de projection (14) d'un fluide sur le piston et une deuxième extrémité munie d'un orifice, les deuxièmes extrémités des première (10) et deuxième (12) portions tubulaires étant solidarisées mécaniquement de sorte à assurer une connexion fluidique entre les première (10) et deuxième (12) portions tubulaires.

CONTROL DEVICE OF AN INTERNAL COMBUSTION ENGINE

OIL NOZZLE OF SIMPLE CONSTRUCTION

L'invention concerne Gicleur comprenant : - un corps de gicleur présentant une surface de contact, le corps de gicleur comprenant un canal débouchant sur la surface de contact ; - une vis de maintien ; - une plaque d'orientation (106) ; le gicleur est caractérisé en ce que le corps de gicleur est monté en butée dans le trou selon de sorte que la surface de contact dudit corps soit en affleurement avec une seconde face (106b) de la plaque d'orientation (106) opposée à la première face (106a), le corps de gicleur et la plaque d'orientation (106) comprenant des moyens d'orientation coopérant de manière à ce que la sortie d'huile soit orientée, la plaque d'orientation (106) comprenant en outre des moyens d'orientation adaptés pour orienter ladite plaque, la plaque d'orientation (106) étant en matière plastique.

APPARATUS AND METHOD FOR CONTROLLING PISTON COOLING OIL JET

The present invention relates to an apparatus and a method for controlling a piston cooling oil jet, comprising: a main gallery provided with oil; an oil jet gallery forming an oil injection path so that oil passing through the main gallery is injected into a lower portion of a piston; an oil jet valve for opening the oil injection path so as to introduce the oil provided from the main gallery into the oil jet gallery; and a controller electrically connected to the oil jet valve, calculating a target oil pressure based on a first factor value, a second factor value, and a third factor value, and controlling the opening degree of the oil jet valve through the target oil pressure, wherein the first factor value corresponds to an engine rotation speed and an engine load, the second factor value is calculated by a predetermined target oil pressure, and the third factor value corresponds to the engine rotation speed and the temperature of the oil in the main gallery. COPYRIGHT KIPO 2017 (AA) ...

CYLINDER WALL OIL DELIVERY SYSTEM FOR RECIPROCATING ENGINE AND RECIPROCATING ENGINE EMBODYING THE SAME

OIL JET STRUCTURE FOR COOLING CYLINDER

PURPOSE: An oil jet structure for cooling cylinder is provided for cooling cylinder by injecting lubricant by oil jet plunger depending on temperature of a cylinder liner. CONSTITUTION: An oil jet injects oil to a piston supplied from an oil pump to an oil gallery. A temperature sensor(31) is formed on upper part of a cylinder liner(11), which guides reciprocating movement of a piston(13). A temperature sensed by the temperature sensor(31) is compared with a set temperature by a controller(30). The controller(30) controls an amount of the injected oil. A solenoid(26) operates by the controller(30). A moving range of a plunger(27) is varied stepwise by the operation of the solenoid(26). Thereby, controlled amount of the oil is injected by an oil jet(20) to the lower part of the piston(13). © KIPO 2002 ...

PERFECTED ENGINE OF INTERNAL COMBUSTION

METHOD AND DEVICE FOR COOLING A PISTON IN A RECIPROCATING PISTON INTERNAL COMBUSTION ENGINE

The invention relates to a method and a device for cooling a piston (21) in a reciprocating piston internal combustion engine (20), which comprises a lubricating oil system for lubricating and cooling, having at least one electrically actuatable piston spray nozzle (15) arranged in a crankcase (22) of the reciprocating piston internal combustion engine (20) to which lubricating oil (11) is supplied from the lubricating oil system by means of an electrically actuatable lubricating oil pump (12) as required. The at least one piston spray nozzle (15) comprises at least one outlet (16) for the lubricating oil (11), wherein the at least one outlet (16) is aligned in such a manner that lubricating oil (11) is sprayed onto the underside of the piston (21). The volume of lubricating oil (11) supplied to the piston (21) is regulated as a function of the current surface temperature (T_OBK) of the piston (21).

PISTON FOR INTERNAL COMBUSTION ENGINE

In order to provide a piston which is for an internal combustion engine and makes it possible to both improve combustion efficiency and suppress knocking, the present invention is provided with: a piston body that contains a metal, has a piston head and a piston skirt, and has a holding part formed in the piston head on a combustion chamber side of the internal combustion engine; a low thermal conductivity layer disposed inside the holding part and having a thermal conductivity lower than the piston body; and a cooling channel that extends inside the piston head in a direction around an axis, and through which a fluid for cooling the piston head can flow.

COOLING NOZZLE MOUNTING ARRANGEMENT

A cooling nozzle mounting arrangement comprising a cooling nozzle assembly (10) comprised of a mounting plate (12), a pin body (14), a nozzle tube (16) having an interior passage (35) wherein the nozzle tube (16) is mounted to the mounting plate (12) and pin body assembly (10), and an engine cylinder block (42) comprised (42) of a cylinder (44) with a piston assembly (46) disposed therein, the piston assembly (46) including a piston (48) and a connecting rod (50), whereby the nozzle tube (16) is disposed such that the flow of oil is directed through an access aperture (64) in the under-crown (66) of the piston (48) and into the interior of the piston (48), wherein the flow path intersects the piston (48) at different locations depending on the stroke position of the piston (48) within the cylinder (44) so that in a first stroke position, the flow path is directing oil into the access aperture (64) and into the interior of the piston (48) and in a second stroke position, the flow path does ...

CLEARANCE ESTIMATING DEVICE, SLIDE CONTROL DEVICE, CLEARANCE ESTIMATING METHOD, AND SLIDE CONTROL METHOD

This clearance estimating device is provided with: an other portion temperature estimating portion for estimating the temperature of another portion other than a skirt portion of a piston which is a constituent of an internal combustion engine; a skirt temperature estimating portion for estimating the temperature of the skirt portion of the piston on the basis of the temperature of the other portion estimated by the other portion temperature estimating portion; and a clearance estimating portion for estimating the size of a clearance between a cylinder which accommodates the piston with freedom to reciprocate, and the skirt portion, on the basis of the temperature of the skirt portion estimated by the skirt temperature estimating portion.

Piston cooling oil control valve

An engine lubricating system has a branch passage for supplying oil to spray nozzles targeted against the engine pistons for piston cooling purposes. A tubular valve element is slidably positioned in the main oil passage for controlling the flow of oil into the branch passage in accordance with the need for piston cooling. The tubular valve element is operated by a thermostatic power element in the main passage.

PCJ solenoid valve diagnostic method

A method of diagnosing a PCJ solenoid valve includes determining whether a predetermined diagnostic condition is satisfied; performing diagnostic spraying by controlling the PCJ solenoid valve to cause the PCJ to spray oil for a predetermined diagnostic spraying time when the controller concludes that the predetermined diagnostic condition is satisfied; and diagnosing a failure of the PCJ solenoid valve by use of changes of oil pressure introduced to the PCJ or of PWM duty that controls an oil pump configured for pumping oil supplied to the PCJ after the diagnostic spraying from the PCJ.

ENGINE

PROBLEM TO BE SOLVED: To increase cooling efficiency of each part of an engine using fuel as lubricating oil. SOLUTION: An engine cooling portion 18 intervenes between an electric supply pump 6 and an oil pan 3. A part of a fuel supply path 4 composes a cooling fuel path for supplying the fuel for cooling to the engine cooling portion 18. The engine cooling portion 18 includes a bore wall 22b3 positioned between bores formed on a cylinder block 22. The engine cooling portion 18 includes an inlet valve 24 and an exhaust valve 25 of a cylinder head 23. The engine cooling portion 18 includes a back surface side of a piston 26, and the fuel for cooling is supplied to the piston by a piston jet 27. A three-way valve 19 is disposed between the engine cooling portion 18 and the electric supply pump 6, and the fuel supply path 4 is branched from a bypass path 20 through the three-way valve 19. COPYRIGHT: (C)2009,JPO&INPIT ...

LUBRICATION STRUCTURE OF ENGINE, LUBRICATION STRUCTURE OF ENGINE FOR SNOW VEHICLE AND SNOW VEHICLE

PROBLEM TO BE SOLVED: To provide oil pumps for supply and for collection while avoiding interference with a clutch mechanism part and a large-sized structure of an engine. SOLUTION: A front side balancer shaft 61 and a rear side balancer shaft 62 are provided frontward and rearward respectively, sandwiching a crank shaft 7 so as to be roughly parallel with the crank shaft 7, and are pivotally supported between an upper crankcase 5 and a lower crankcase 6. The clutch mechanism part 38 that is a V belt type continuously variable transmission is provided on an output shaft (PTO) 7a side of the crank shaft 7 that is a left side part of an engine room 30. A magnet MG is arranged at a right part of the engine 2 and between the both crankcases 5, 6 and a magnet cover 60. The oil pumps FEP and SCP are arranged above and below the front side balancer shaft 61 respectively, and installed between the both crankcases 5, 6 and the magnet cover 60. COPYRIGHT: (C)2005,JPO&NCIPI ...

ENGINE

PURPOSE: To eliminate a sliding load so as to improve the durability of a connecting rod and a piston by forming an upper part of a small end into the taper shape, of which upper end is narrowed, and forming the lower part thereof into the straight shape, and positioning the small end in a piston. CONSTITUTION: A part of an engine from the upper end to a nearly central part in the vertical direction is formed into the taper-shaped part 1a, of which upper end is narrowed, and a part of the engine from the nearly central part in the vertical direction to the lower end of the small end is formed into the straight-shaped part 1b. The height (h) of the boundary between the taper-shaped part 1a and the straight-shaped part 1b is formed so as to correspond to the height of a step part of the small end of a connecting rod with step. Lateral width d2 of a small end fitting hole Pa of a piston P is formed nearly close to the lateral width d1 of the straight-shaped part 1a of the small end for dimensional ...

СПОСОБ (ВАРИАНТЫ) И СИСТЕМА ПОДАЧИ МАСЛА В ДВИГАТЕЛЬ ВНУТРЕННЕГО СГОРАНИЯ

FIELD: engines and pumps.SUBSTANCE: invention relates to a system and method for supplying oil to an internal combustion engine. Disclosed are methods and a system for supplying oil to an internal combustion engine. In one method, the oil is pumped through a low pressure oil pump to piston cooling nozzles and at the same time the oil is separately pumped through a high pressure oil pump to the cylinder head, bearings, turbocharger, or a variable valve control system. In addition, each of the pumps – low-pressure pump and high-pressure pump – pumps out the oil from the common oil sump and returns the oil to said common oil sump.EFFECT: invention reduces loss of hydraulic energy.20 cl, 6 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 674 854 C2 (51) МПК F01M 1/02 (2006.01) F01P 3/08 (2006.01) F01P 5/10 (2006.01) F01P 1/08 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК F01M 1/02 (2018.08); F01M 1/12 (2018.08); F01P 3/08 (2018.08); F01P 5/10 (2018.08) (21)(22) Заявка: 2015110012, 23.03.2015 (24) Дата начала отсчета срока действия патента: (73) Патентообладатель(и): Форд Глобал Текнолоджиз, ЛЛК (US) Дата регистрации: 13.12.2018 25.03.2014 US 14/225,321 (43) Дата публикации заявки: 10.10.2016 Бюл. № 4284037 A, 18.08.1981. SU 1811562 A3, 23.04.1993. SU 1760138 A1, 07.09.1992. RU 2242623 C2, 20.12.2004. 28 (45) Опубликовано: 13.12.2018 Бюл. № 35 2 6 7 4 8 5 4 R U (54) СПОСОБ (ВАРИАНТЫ) И СИСТЕМА ПОДАЧИ МАСЛА В ДВИГАТЕЛЬ ВНУТРЕННЕГО СГОРАНИЯ (57) Реферат: Изобретение относится к системе и способу подшипникам, турбонагнетателю или системе подачи масла в двигатель внутреннего сгорания. варьируемого управления клапанами. При этом Раскрыты способы и система для подачи масла каждый из насосов - насос низкого давления и в двигатель внутреннего сгорания. Согласно насос высокого давления - выкачивает масло из одному способу масло нагнетают посредством общего маслосборника совместного пользования масляного насоса низкого ...

СПОСОБ ИЗГОТОВЛЕНИЯ ФОРСУНКИ МАСЛЯНОГО ОХЛАЖДЕНИЯ ПОРШНЕЙ И ФОРСУНКА МАСЛЯНОГО ОХЛАЖДЕНИЯ ПОРШНЕЙ

Изобретение относится к машиностроению, в частности к масляному охлаждению поршней. Форсунку масляного охлаждения поршней получают путем герметичного соединения между собой двух изготовленных частей форсунки, поверхность раздела которых проходит через ось сквозного канала в форсунке, сообщающего масляную магистраль с сопловой частью. Соединяемые части форсунки можно изготавливать как из металлических, так и из неметаллических материалов разными способами, например точного литья, штамповки, позволяющими обеспечить в зависимости от конструкции форсунки любую конфигурацию маслоподводящего канала, характеризуемую плавностью переходов внутренних отверстий. Изобретение обеспечивает компактность форсунки, удобство при ее установке в блок цилиндров, надежность в эксплуатации и высокую точность попадания струи масла на всем ходе поршня. 2 н. и 14 з.п. ф-лы, 5 ил.

УСТРОЙСТВО ДЛЯ ОХЛАЖДЕНИЯ И СМАЗКИ ПОРШНЯ ДВИГАТЕЛЯ ВНУТРЕННЕГО СГОРАНИЯ

Изобретение относится к двигателестроению. Устройство для охлаждения и смазки поршня (1) двигателя внутреннего сгорания (ДВС) включает масляную форсунку (11), поршень (1), поршневой палец (10), головку (2) поршня, юбку (5) поршня, в стенке которой имеется сквозное отверстие (8), ось которого расположена по нормали к центральной оси поршня. В зоне сопряжения внутренних поверхностей головки (2) и юбки (5) поршня выполнен теплопередающий элемент (3), содержащий обращенную к масляной форсунке гладкую плоскую маслопринимающую поверхность (4), имеющую в проекции на поперечное сечение поршня форму круга, центр которой лежит в плоскости, проходящей через центральные оси поршня (1), сквозного отверстия (8) в юбке (5) поршня и масляной форсунки (11), на пересечении осей масляной форсунки (11) и сквозного отверстия (8) в юбке (5) поршня, которое расположено в направлении центральной оси поршня в пределах расстояния между верхней кромкой юбки (5) поршня и точкой, соответствующей половине длины юбки ...

Устройство для охлаждения поршня двигателя внутреннего сгорания

Полезная модель относится к машиностроению, а именно к конструкции цилиндропоршневой группы, и направлено на обеспечение эффективного охлаждения маслом горячей зоны поршня высокофорсированных дизельных двигателей внутреннего сгорания. Устройство для охлаждения поршня двигателя внутреннего сгорания содержит магистраль (1) для подвода масла, выполненный в блоке цилиндров, форсунку для охлаждения поршня, состоящую из корпуса (2), пластины (3), первой трубки (4) подачи масла, болта (5) крепления форсунки, штифта (6) направляющего, второй трубки (7) подачи масла и сопла (8).

СИСТЕМА ДВИГАТЕЛЯ

... 1. Система двигателя, содержащая:поршень;форсунку охлаждения поршня, избирательно распыляющую масло на поршень;масляный насос, подающий масло в форсунку охлаждения поршня, причем масляный насос является масляным насосом переменной производительности; иконтроллер, содержащий исполняемые постоянные команды для изменения производительности масляного насоса в ответ на разность крутящих моментов двигателя.2. Система двигателя по п. 1, в которой разность крутящих моментов двигателя является разностью между разностью моментов трения двигателя и разностью пограничных крутящих моментов двигателя на некоторых скорости вращения и нагрузке двигателя.3. Система двигателя по п. 2, дополнительно содержащая команды для предотвращения ввода в работу форсунок охлаждения поршня в ответ на недостающую нагрузочную способность масляного насоса для обеспечения требуемого давления смазки.4. Система двигателя по п. 2, в которой дополнительно содержатся дополнительные команды для предотвращения повышения производительности ...

Устройство для охлаждения поршня двигателя внутреннего сгорания

Устройство для охлаждения поршня двигателя внутреннего сгорания

Шатунно-поршневая группа двигателя внутреннего сгорания

Brennkraftmaschine mit Kolbenkühlung

Cylinder bore wall oil squirter, reciprocating engine embodying same and where the engine further embodies a rollerized cranktrain

Featured is a cylinder wall oil delivery system for a reciprocating engine having at least one cylinder and at least one piston movably received in the cylinder as well as a reciprocating engine embodying such a cylinder wall oil delivery system. Such an oil delivery system includes a squirter that is fixably arranged in each cylinder so that oil is directed therefrom to two different areas of the cylinder wall. The squirter includes a first nozzle being orientated so the oil is directed to one of the two cylinder wall areas and a second nozzle being orientated so the oil is directed to the other of two cylinder wall areas. In particular embodiments, the squirter is arranged so the oil targets the piston skirt thrust and anti-thrust travel areas of the cylinder wall and so as to regulate the oil flow from each nozzle.

Oil squirter

An oil squirter includes a housing in fluid communication with a source of oil pressure, a first nozzle in fluid communication with the housing, and a second nozzle in fluid communication with the housing. The oil squirter also includes a mechanism arranged within the housing and configured to open the first nozzle and close the second nozzle when the oil pressure is below a threshold value. The mechanism is also configured to open the second nozzle and close the first nozzle when the oil pressure is at or above the threshold value. An engine having a cylinder defined by a cylinder bore, a piston configured to reciprocate within the cylinder bore, and the oil squirter, along with a vehicle having such an engine, is also disclosed. In the engine, the first nozzle sprays oil onto the cylinder bore and the second nozzle sprays oil at the underside of the piston.

COOLING DEVICE FOR ENGINE

Disclosed is an oil jet device for cooling a piston, including: an oil cooler that is disposed upstream of an oil injection nozzle an oil pump that is disposed upstream of the oil cooler a first switching adjustment valve that is disposed between the oil injection nozzle and the oil cooler and adjusts a flow dividing ratio at which the cooling oil from the oil cooler is distributed to the oil injection nozzle side and to an oil pan side; and a control unit that has an oil quantity adjustment map for switching the first switching adjustment valve based on a piston temperature calculation map for calculating the temperature of the piston using detection values acquired respectively by a cooling water temperature sensor a rotation speed sensor and a load sensor 1. A cooling device for an engine including an oil jet device for cooling a piston with oil , the cooling device comprising:a cooling water temperature sensor that detects a temperature of the engine;a rotation speed sensor that detects rotation speed of the engine;a load sensor that detects load of the engine;a jet nozzle that is secured in a cylinder block of the engine and injects cooling oil onto the rear face of the piston;an oil cooler disposed upstream of the jet nozzle on a distribution path of the cooling oil;an oil pump that is located upstream of the oil cooler and pumps the cooling oil to the oil cooler;a first switching adjustment valve that is disposed between the jet nozzle and the oil cooler, and adjusts a flow dividing ratio at which the cooling oil from the oil cooler is distributed to the jet nozzle side and to an oil pan side; anda control unit that has an oil quantity adjustment map for switching the first switching adjustment valve based on a piston temperature calculation map for calculating the temperature of the piston using the detection values acquired respectively by the temperature sensor, the rotation speed sensor and the load sensor.2. The cooling device for an engine according to ...

DEVICE FOR CONTROLLING SUPPLY OF A SYSTEM WITH A FLUID

A system for cooling internal combustion engine pistons comprising an oil pump driven by the engine, jets projecting oil on the pistons, and a control device () interposed between the oil pump and the jets, where the control device comprises a valve () positioned between an oil inlet pipe () connected to the pressurised oil pump and a jet supply pipe (), where said valve allows the oil to flow out from the pump to the jets when the oil pressure is at least equal to a threshold pressure, and where the device also comprises a solenoid valve () capable of causing the valve () to close by permitting the pressurised oil to be brought into contact with the closure member (), in a direction of closure of the valve (). 1. A device for controlling the supply of a system from a fluid under pressure source comprising:a valve intended to be positioned between a fluid under pressure inlet pipe and a supply pipe of said system, said valve allowing the fluid under pressure to flow out from the source to the system when the pressure of the fluid is at least equal to a threshold pressure, the valve having a closure member and an return spring supported on a second face of the closure member, a first face of the closure member opposite the second face being intended to receive an effort from the fluid under pressure to cause the opening of the valve,a solenoid valve intended to be installed in a control pipe connected to the fluid under pressure inlet pipe and conveying the fluid under pressure to the second face of the closure member, said solenoid valve controlling the contact of the second face of the closure member with the fluid under pressure, and the solenoid valve being closed if there is no electrical power.2. A control device according to claim 1 , in which the valve comprises a sleeve for guiding the elastic means claim 1 , said sleeve being immobile claim 1 , also forming a stop for the closure member in its maximum opening position claim 1 , and the sleeve comprising a ...

COOLING STRUCTURE OF PISTON IN ENGINE

A cooling structure of a piston in an engine, in which oil is injected toward a top portion of the piston reciprocating within a cylinder of the engine to cool the top portion of the engine. The cooling structure may include an oil guide surface including at least a thick wall portion of a peripheral wall of the piston which is provided with a ring groove and extends continuously from an inner surface of the peripheral wall of the piston to a reverse surface of the top portion of the piston. 1. A cooling structure of a piston in an engine , in which oil is injected toward a top portion of the piston reciprocating within a cylinder of the engine to cool the top portion of the engine , comprising:an oil guide surface including at least a thick wall portion of a peripheral wall of the piston, which is provided with a ring groove and extends continuously from an inner surface of the peripheral wall of the piston to a reverse surface of the top portion of the piston.2. The cooling structure of the piston in the engine claim 1 , according to claim 1 ,wherein protruding portions are provided to sandwich the oil guide surface from both sides in a circumferential direction of the piston.3. The cooling structure of the piston in the engine claim 1 , according to claim 1 ,wherein the thick wall portion of the peripheral wall of the piston has a recess at an inner side thereof, and a bottom surface of the recess forms at least a portion of the oil guide surface.4. The cooling structure of the piston in the engine claim 1 , according to claim 1 ,wherein a swelling portion is formed continuously with the thick wall portion of the peripheral wall of the piston, and the oil guide surface is formed to extend from the swelling portion to the thick wall portion.5. The cooling structure of the piston in the engine claim 1 , according to claim 1 ,wherein the oil guide surface is formed at an exhaust side of the piston.6. The cooling structure of the piston in the engine claim 1 , ...

PISTON COOLING JET

A piston cooling jet includes a housing, a nozzle, a valve, a pressure chamber, a pressure adjusting passage, and a filter. The nozzle is provided to project outward from the housing, and capable of spraying oil toward a piston. The valve is capable of moving reciprocally inside the housing, and configured to receive a load due to a hydraulic pressure in an engine-side oil passage applied from a front side of the valve. The valve includes a valve-side oil passage that communicates with the engine-side oil passage. The pressure chamber communicates with the valve-side oil passage. The pressure adjusting passage is disposed between the pressure chamber and a space outside the housing. The filter is disposed in the valve, and configured to remove foreign matter that cannot pass through the pressure adjusting passage from oil passing through the valve-side oil passage. 1. A piston cooling jet comprising:a housing;a nozzle provided to project outward from the housing and capable of spraying oil toward a piston;a valve capable of moving reciprocally inside the housing and configured to receive a load due to a hydraulic pressure in an engine-side oil passage applied from a front side of the valve, the valve including a valve-side oil passage that communicates with the engine-side oil passage;a pressure chamber defined inside the housing on a back side of the valve, the pressure chamber communicating with the valve-side oil passage;a pressure adjusting passage disposed between the pressure chamber and a space outside the housing; anda filter disposed in the valve and configured to remove foreign matter that cannot pass through the pressure adjusting passage from oil passing through the valve-side oil passage, wherein a valve closed state in which communication between the engine-side oil passage and the nozzle is prohibited, and', 'a valve open state in which communication between the engine-side oil passage and the nozzle is allowed with the valve moved toward the back ...

Approach for controlling operation of oil injectors

Various embodiments of systems and methods related to controlling oil injection for piston cooling in an engine are disclosed. In one embodiment, a method includes during an engine cold start event, enabling oil injection onto a piston of an engine, disabling oil injection after the engine cold start event, and re-enabling oil injection after the engine cold start event based on a first operating parameter.

VERTICAL MULTICYLINDER STRAIGHT ENGINE

There is provided a vertical multicylinder straight engine in which the temperature distribution of a plurality of cylinder barrels is made close to an even state. A cylinder jacket includes: a jacket inlet; a separated channel; a plurality of separated outlets; and heat dissipator channels for dissipating heat of the respective cylinder barrels to engine cooling water introduced through the separated outlets. The plurality of separated outlets include: a front-side separated outlet to a front-end barrel; a rear-side separated outlet to a rear-end barrel; and middle separated outlets to middle barrels between the front-end barrel and the rear-end barrel, and the jacket inlet is disposed so as to be contained within an entire middle barrel side area that is lateral to the middle barrels and has a front-rear length as long as a length from a front-most end to a rear-most end of the middle barrels. 1. A vertical multicylinder straight engine , comprising:a cylinder block around a plurality of cylinder barrels, the cylinder block allowing engine cooling water to pass through a cylinder jacket, whereinthe plurality of cylinder barrels include a front-end barrel, a rear-end barrel, and middle barrels disposed between these two barrels, taking a direction along which a crankshaft central axis line extends as a front-rear direction, and a side of a flywheel as a rear side,the cylinder jacket includes: a jacket inlet for introducing the engine cooling water supplied from a radiator; separated channels for diverting the engine cooling water introduced through the jacket inlet in the front-rear direction; a plurality of separated outlets for diverting the engine cooling water diverted in the front-rear direction toward the respective cylinder barrels; and heat dissipator channels for dissipating heat of the respective cylinder barrels to the engine cooling water introduced through the separated outlets,the plurality of separated outlets include: a front-side separated outlet ...

OIL JET

A body () of an oil jet () is provided with: an oil supply port () which opens into an oil passage () in a cylinder block () of an internal combustion engine; a cylinder () one end of which is communicated with the oil supply port () and the other end of which is closed; and an oil injection port () which opens on a side surface of the cylinder (). A piston valve () is accommodated in the cylinder (). The piston valve () forms in the cylinder () a differential pressure room () which is a closed compartment. Moreover, an orifice () which makes the differential pressure room () being communicated with a side of the oil supply port () is formed in the piston valve (). The piston valve () is biased toward a position at which the oil injection port () is closed by a spring (). Furthermore, a leak hole () which allows oil to be leaked outside of the body () from the differential pressure room () is formed in the body (). 1. An oil jet , comprising:a body that has an oil supply port which opens into an oil passage in a cylinder block of an internal combustion engine, a cylinder one end of which is communicated with the oil supply port and another end of which is closed, and an oil injection port which opens on a side surface of the cylinder;a piston valve that is accommodated in the cylinder to form a closed compartment in the cylinder, and includes an orifice which makes the closed compartment being communicated with a side of the oil supply port; anda spring that biases the piston valve toward a position at which the oil injection port is closed,wherein a leak hole which allows oil to be leaked outside the body from the closed compartment is formed in the body.2. The oil jet according to claim 1 , further comprising:a stopper that is column-shaped, is inserted into the closed compartment from a bottom part of the cylinder and limits a moving range of the piston valve,wherein the leak hole is a gap formed between a hole, through which the stopper formed in the body is ...

PISTON COOLING JET SYSTEM

Systems are provided for a piston cooling jet system for cooling a piston of a locomotive engine. In one example, a piston cooling jet system includes a feed body hydraulically coupled to an oil reservoir and a pair of piston cooling tubes extending radially outwards, in opposite directions, from the feed body. The tubes may have showerhead outlet features at one end for uniformly spraying oil onto inlets of a piston oil gallery housed in the piston. 1. A piston cooling system for a locomotive engine , comprising:a feed body hydraulically configured to be coupled to an oil reservoir, the feed body having a longitudinal axis;a first piston cooling tube extending laterally to protrude radially out from one side of the feed body relative to the longitudinal axis, the first tube having a first showerhead outlet element; anda second piston cooling tube extending laterally to protrude radially out from another side of the feed body relative to the longitudinal axis, the second tube having a second showerhead outlet element.2. The system of claim 1 , wherein the first showerhead outlet element is positioned diametrically opposite to the second showerhead outlet element and wherein each of the first showerhead outlet element and the second showerhead outlet element include a larger central aperture radially surrounded by a plurality of smaller claim 1 , peripheral apertures.3. The system of claim 2 , wherein each of the first showerhead outlet element and the second showerhead outlet element of the first and second cooling tubes are coupled to a main passage of the corresponding first and second cooling tubes via an angled claim 2 , hollow connector element.4. The system of claim 2 , wherein a first longitudinal axis of the first cooling tube is at an angle relative to the longitudinal axis of the feed body on the side of the feed body claim 2 , and wherein a second longitudinal axis of the second cooling tube is at the same angle relative to the longitudinal axis of the ...

DEVICE FOR CONTROLLING THE SUPPLY OF A FLUID TO A SYSTEM ALLOWING FLUID CONSUMPTION TO BE OPTIMISED

Cooling spray jet comprising a supply inlet, a discharge outlet, a reaming connecting the inlet and the outlet, the outlet having a given cross-sectional area, a valve comprising a plug free to slide in the reaming and bearing in contact with a valve seat in a closed state. The valve has two open states after a first phase in which the plug separates from the valve seat, with different ranges of fluid pressures, the cross-sectional area between the plug and the reaming of each opening state being different from the cross-sectional area of the other state, one of these opening states having a cross-sectional area that regulates the fluid flow at the discharge outlet and the other opening state having a cross-sectional area such that the flow is regulated by the cross-sectional area of the outlet. 19-. (canceled)10. Device to control the supply of a fluid from a source under pressure to a system , comprising:a supply inlet for the fluid under pressure,a discharge outlet for the fluid under pressure, a reaming connecting the supply inlet and the discharge outlet, said discharge outlet having a given cross-sectional area,{'b': 8', '108, 'a valve comprising a plug installed free to slide in said reaming and bearing in contact with a valve seat formed in the reaming in a closed state, said valve (, ) also comprising several opening states after a first phase in which the plug separates from the valve seat, each opening state corresponding to a different range of fluid pressure values, the cross-sectional area between the plug and the reaming of each opening state being different from the cross-sectional areas of the other states, at least one of these opening states having a cross-sectional area such that it regulates the fluid flow at the discharge outlet and at least one of these opening states having a cross-sectional area such that the flow is regulated by the cross-sectional area of the discharge outlet.'}11. Control device according to claim 10 , in which the open ...

PISTON COOLING SYSTEM

An engine cylinder block includes a control valve and stratified layers defining a network internal to the cylinder block. The network includes a main feed line in fluid communication with the control valve, and branched and winding arterial channels extending from the main feed line with diameters that taper to define nozzles configured to spray coolant on sides of pistons carried within the cylinder block. 1. An engine system comprising:a piston;a cylinder block of stratified layers defining a network of internal coolant channels that taper to define nozzles configured to spray coolant from the channels on the piston; anda control valve, in fluid communication with the network, programmed to release a predefined quantity of a coolant into the network responsive to signals indicative of a state of the engine system.2. The engine system of claim 1 , further comprising a controller in communication with the control valve.3. The engine system of claim 2 , wherein the controller is an engine control module of a vehicle.4. The engine system of claim 2 , wherein the control valve regulates a flow of the coolant by varying a size of a flow passage as directed by a signal from the controller.5. The engine system of claim 1 , wherein the network includes a coolant intake port and a main feed line and wherein the channels extend from the main feed line.6. The engine system of claim 1 , wherein the control valve is connected to the main feed line.7. The engine of claim 1 , wherein the signals are a series of data points representing a speed of a vehicle versus time.8. The engine of claim 1 , wherein the signals are provided by the controller.9. The engine system of claim 5 , wherein the main feed line traverses the cylinder block.10. The engine system of claim 1 , wherein the network is disposed on an intake side of the cylinder block.11. The engine system of claim 1 , wherein the stratified layers are metal.12. The engine system of claim 1 , wherein the network forms an ...

INTERNAL COMBUSTION ENGINE WITH AT LEAST ONE CYLINDER

An internal combustion engine that includes at least one cylinder with at least one piston reciprocating in a cylinder liner; a piston cooling device to cool the piston, and which includes at least one spraying tube with a spray nozzle which is directed towards a bottom side of the piston facing a crankcase, the at least one spraying tube being fixed to the cylinder liner; and a connecting channel arrangement to fluidically connect the spraying tube to an oil supply channel arranged in a cylinder block, the connecting channel arrangement including at least one connecting channel formed at least partly in the cylinder liner, and at least one curved connecting channel. In order to ensure reliable piston cooling, the connecting channel arrangement includes at least one curved connecting channel. 1. An internal combustion engine , comprising: at least one cylinder with at least one piston reciprocating in a cylinder liner; a piston cooling device to cool the piston , and which includes at least one spraying tube with a spray nozzle which is directed towards a bottom side of the piston facing a crankcase , the at least one spraying tube being fixed to the cylinder liner; and a connecting channel arrangement to fluidically connect the spraying tube to an oil supply channel arranged in a cylinder block , the connecting channel arrangement including at least one connecting channel formed at least partly in the cylinder liner , and at least one curved connecting channel.2. The internal combustion engine of claim 1 , wherein the connecting channel arrangement comprises at least one straight connecting channel.3. The internal combustion engine of claim 2 , wherein the straight connecting channel is arranged parallel to the cylinder axis.4. The internal combustion engine of claim 2 , wherein the straight connecting channel is formed by at least one borehole arranged in the cylinder liner.5. The internal combustion engine of claim 1 , wherein the curved connecting channel is ...

CYLINDER HEAD ASSEMBLY WITH OIL REFLECTOR FOR LUBRICATION OF A ROCKER ARM

A cylinder head assembly includes a cylinder head defining a port for selectively communicating air to a combustion chamber of an engine or for selectively discharging exhaust gases from the combustion chamber. The cylinder head also defines a valve seat between the port and the combustion chamber. A combustion valve is mounted in the cylinder head and is selectively seated and unseated with the valve seat. A camshaft with a lobe is mounted in the cylinder head. A rocker arm is engaged with the combustion valve and has a follower for following the lobe. An oil spray source provides a spray of oil while an oil reflector is configured to receive the spray of oil and direct the spray of oil to the follower to provide lubrication between the interface of the follower and the lobe. 1. A cylinder head assembly for an internal combustion engine having a piston reciprocatable within a cylinder , a crankshaft rotated by said piston , and a combustion chamber defined between said cylinder head assembly and said piston , said cylinder head assembly allowing air into said combustion chamber and allowing exhaust gases out of said combustion chamber , said cylinder head assembly comprising:a cylinder head defining a port for selectively communicating said air to said combustion chamber or for selectively discharging said exhaust gases from said combustion chamber and also defining a valve seat between said port and said combustion chamber;a combustion valve mounted in said cylinder head and selectively seated and unseated with said valve seat;a camshaft mounted in said cylinder head, rotatable about a camshaft axis, and having a high lift lobe and a low lift lobe;a rocker arm engaged with said combustion valve and having a high lift follower and a low lift follower, said rocker arm being switchable between 1) a high lift mode for receiving high lift valve opening and closing motion from said high lift lobe of said camshaft and 2) a low lift mode for receiving low lift opening and ...

Method and apparatus to regulate oil pressure via controllable piston cooling jets

A method of regulating oil pressure within an engine assembly is provided. The engine assembly includes an oil pump configured to provide oil to an oil system of the engine assembly; a piston cooling jet configured to direct a jet of oil from the oil system towards a piston of an engine; and an electronic control valve configured to control the flow of oil to the piston cooling jet. The method includes operating the electronic control valve to provide a flow rate of oil above a threshold flow rate to the piston cooling jet when the engine assembly is operating above a threshold power output or engine running speed; and regulating the pressure of oil within the oil system when the engine assembly is operating below the threshold power output or engine running speed, by operating the electronic control valve.

PISTON COOLING STRUCTURE IN COMBUSTION ENGINE

A piston cooling structure for an engine includes a first nozzle and a second nozzle for injecting a cooling liquid towards a back face of a piston that reciprocally move within a cylinder bore along a cylinder axis line. The first angle of inclination of an axis of the first nozzle relative to the cylinder axis line is set to be smaller than the second angle of inclination of an axis of the second nozzle relative to the cylinder axis line. 1. A piston cooling structure for a combustion engine which comprises:first and second nozzles configured to inject a cooling liquid towards a back face of a piston which reciprocatingly move along a cylinder axis line within a cylinder bore, the first and second nozzles having axes that are inclined at first and second angles relative to the cylinder axis line, respectively,in which the first angle of inclination relative to the cylinder axis line is set to a value smaller than the second angle of inclination relative to the cylinder axis line.2. The piston cooling structure for the combustion engine as claimed in claim 1 , in which the first nozzle injects the cooling liquid towards a portion of the back face of the piston adjacent an exhaust port.3. The piston cooling structure for the combustion engine as claimed in claim 1 , in which the first nozzle has a first injection port and the second nozzle has a second injection port claim 1 , the first injection port being disposed radially inwardly of the second injection port with respect to the cylinder bore.4. The piston cooling structure for the combustion engine as claimed in claim 1 , in which when the piston is at the top dead center claim 1 , the second nozzle injects the cooling liquid towards a portion of the back face of the piston adjacent an exhaust port.5. The piston cooling structure for the combustion engine as claimed in claim 1 , in which the first nozzle has a first injection port and the second nozzle has a second injection port claim 1 , the first injection ...

CONTROL VALVE FOR A LUBRICANT NOZZLE

A control valve for a lubricant nozzle for cooling a piston of an internal combustion engine includes at least one passage opening through which lubricant can flow, a control part which is movable in a respective movement direction and which, as a function of its position, forms an opening cross section with the passage opening for at least partially opening up or for closing off the passage opening, and an actuation part which moves the control part as a function of a pressure of the lubricant between at least one first position in the presence of a first pressure, a second position in the presence of a second pressure and a third position in the presence of a third pressure of the lubricant. The second pressure is higher than the first pressure and lower than the third pressure, wherein the opening cross section formed in the second position is larger than the opening cross sections in the first position and in the third position. 1. A control valve for a lubricant nozzle for cooling a piston of an internal combustion engine , havinga housing with at least one passage opening through which lubricant can flow;a control part movable in a respective movement direction and which, forms an opening cross section with the passage opening as a function of a position of the control part relative to the passage opening, for at least partially opening up or for closing off the passage opening; andan actuation part that moves the control part as a function of a pressure of the lubricant between a first position in the presence of a first pressure, a second position in the presence of a second pressure and a third position in the presence of a third pressure of the lubricant, wherein the second pressure is higher than the first pressure and lower than the third pressure, wherein the opening cross section formed in the second position is larger than the opening cross sections in the first position and in the third position.2. The control valve according to claim 1 , wherein the ...

LUBRICATING NOZZLE WITH SIMPLIFIED PRODUCTION

A lubricating nozzle comprising a metal spray nozzle body comprising a contact surface, the spray nozzle body comprising an axial channel opening out onto the contact surface, a retaining screw, and an orienting plate. The spray nozzle body is mounted inside the hole such that it abuts against a first face of the orienting plate, and such that the contact surface of the body is flush with a second face () of the orienting plate opposite the first face, the spray nozzle body and the orienting plate () comprising a first complementary orienting structure which engages such that the oil outlet is oriented, according to a predetermined orientation relative to the first orienting structure, the orienting plate () further comprising a second orienting structure designed to orient the plate on the engine block. 111-. (canceled)12. Lubricating nozzle comprising:{'b': 101', '101', '101', '101', '101', '101', '103', '101', '104', '101', '101', '101', '101', '104', '101', '105, 'i': a', 'a', 'd', 'd', 'b', 'a', 'c', 'c, 'a metal spray nozzle body () comprising a first end (), said first end () having a contact surface (), the spray nozzle body () comprising an axial channel opening out onto the contact surface (), and thus forming an oil inlet (), the spray nozzle body () further comprising a lateral channel () communicating with the axial channel, the spray nozzle body () further comprising a second end () connected to the first end () via a lateral surface (), the lateral channel () opening out onto the lateral surface () to form an oil outlet ();'}{'b': 110', '101', '101', '101', '101', '103', '101, 'i': d', 'd, 'a retaining screw (), opening out onto the contact surface () of the spray nozzle body (), intended to imperviously clamp the contact surface () of the spray nozzle body () against the block of an engine, and imperviously connect the oil inlet () of the spray nozzle body () to an oil supply of said casing;'}{'b': 106', '107, 'an orienting plate () comprising a hole ...

METHOD AND SYSTEM FOR DIAGNOSING FAILURE OF PISTON COOLING DEVICE

A method for diagnosing a failure of a solenoid valve of a piston cooling device is provided. The method includes varying a pressure in a variable proportional control oil pump when an opening command or a closing command of the solenoid valve is sent to inject oil from the piston cooling device. Additionally, a variation of an oil pressure in an oil flow path of the piston cooling device is monitoring according to a variation of the pressure in the variable proportional control oil pump and whether a failure occurs at the solenoid valve of the piston cooling device is then determined. 1. A method for diagnosing a failure of a solenoid valve of a piston cooling device , comprising:when an opening command or a closing command of the solenoid valve is transmitted to inject oil from the piston cooling device, varying, by a controller, a pressure in a variable proportional control oil pump;monitoring, by the controller, a variation of an oil pressure in an oil flow path of the piston cooling device according to a variation of the pressure in the variable proportional control oil pump; anddetermining, by the controller, whether a failure occurs at the solenoid valve of the piston cooling device.2. The method of claim 1 , further comprising:when the solenoid valve is in a state in which the closing command is transmitted, varying, by the controller, an oil discharge pressure of the variable proportional control oil pump;determining, by the controller, whether a variation occurs at an oil pressure switch configured to monitor a pressure of oil supplied to the piston cooling device; andwhen a variation occurs in the oil pressure in the oil flow path, determining, by the controller, that an open-stuck failure occurs at the solenoid valve of the piston cooling device.3. The method of claim 1 , further comprising:when the solenoid valve is in a state in which the opening command is transmitted, varying, by the controller, an oil discharge pressure of the variable proportional ...

INTERNAL COMBUSTION ENGINE

To provide an internal combustion engine that can inject lubricating oil to both of the first region in the skirt of the piston and the second region outside the skirt with fewer nozzles. An internal combustion engine including: a piston configured to reciprocate in a cylinder bore; and an oil injector configured to inject lubricating oil to the piston. The piston includes pin bosses, skirts, side walls, and a piston inner region that is surrounded by respective inner surfaces of the pin bosses, skirts, and side walls. The oil injector is configured to inject the lubricating oil to the pair of pin bosses when the piston is at one of a top dead center and a bottom dead center, and inject the lubricating oil to the piston inner region when the piston is at another of the top dead center and the bottom dead center. 1. An internal combustion engine comprising:a cylinder having a cylinder bore;a piston configured to reciprocate in the cylinder bore; andan oil injector configured to inject lubricating oil to the piston,wherein the piston includes a pair of pin bosses, a pair of skirts, a pair of side walls that connect the pair of pin bosses to the pair of skirts, and a piston inner region that is surrounded by respective inner surfaces of the pair of pin bosses, respective inner surfaces of the pair of skirts, and respective inner surfaces of the pair of side walls; andwherein the oil injector is configured to inject the lubricating oil to the pair of pin bosses when the piston is at one of a top dead center and a bottom dead center, and inject the lubricating oil to the piston inner region when the piston is at another of the top dead center and the bottom dead center.2. The internal combustion engine according to claim 1 , wherein the oil injector is configured to inject the lubricating oil to the pair of pin bosses when the piston is at the top dead center claim 1 , and inject the lubricating oil to the piston inner region when the piston is at the bottom dead center; ...

LAMINAR FLOW OF PISTON COOLING JETS

A nozzle of a piston cooling system includes a flow path defined by a structure of the nozzle and configured to receive a cooling fluid, a first flow opening fluidly coupled with the flow path and extending through the structure of the nozzle, and a second flow opening fluidly coupled with the flow path and extending through the structure of the nozzle. The first flow opening and the second flow opening are sized to enable laminar flow of corresponding first and second jets of the cooling fluid discharged through the first and second flow openings, respectively. 1. A nozzle of a piston cooling system , comprising:a flow path defined by a structure of the nozzle and configured to receive a cooling fluid;a first flow opening fluidly coupled with the flow path and extending through the structure of the nozzle; anda second flow opening fluidly coupled with the flow path and extending through the structure of the nozzle, wherein the first flow opening and the second flow opening are sized to enable laminar flow of corresponding first and second jets of the cooling fluid discharged through the first and second flow openings, respectively.2. The nozzle of claim 1 , wherein the first flow opening comprises a first cross-sectional area claim 1 , wherein the second flow opening comprises a second cross-sectional flow opening claim 1 , and wherein the first and second cross-sectional areas are equal to one another.3. The nozzle of claim 1 , wherein the first flow opening comprises a first cross-sectional shape having a first maximum width claim 1 , wherein the second flow opening comprises a second cross-sectional shape having a second maximum width claim 1 , and wherein the first maximum width and the second maximum width are equal.4. The nozzle of claim 3 , wherein the first maximum width and the second maximum width are each between 2 and 5 millimeters.5. The nozzle of claim 3 , comprising a third flow opening fluidly coupled with the flow path and extending through the ...

Heating oil for enhanced active thermal coolant system

A method for thermal management of a motor vehicle engine includes one or more of the following: determining a current lube oil temperature; determining a lube oil temperature for optimal friction; turning on piston cooling jets based on the current lube oil temperature and the lube oil temperature for optimal friction; and turning off the piston cooling jets.

OIL JET DEVICE

An oil jet device for supplying pressure oil which is supplied from a pressure oil supply source, includes a valve body and a supporting portion. The valve body is molded by cold-forging a metal material and accommodates a valve portion for controlling the supply of the pressure oil from the pressure oil supply source. The supporting portion is molded by cold-forging a metal material, supports the valve body, and has a first principal surface having a flat shape and configured to abut on an attachment target object. 1. An oil jet device for supplying pressure oil which is supplied from a pressure oil supply source , the oil jet device comprising:a valve body that is molded by cold-forging a metal material and accommodates a valve portion for controlling the supply of the pressure oil from the pressure oil supply source; anda supporting portion that is molded by cold-forging a metal material, supports the valve body, and has a first principal surface having a flat shape and configured to abut on an attachment target object.2. The oil jet device according to claim 1 , whereinthe supporting portion has a planar shape, and includes a valve body supporting portion that supports the valve body and a bolt insertion portion in which a bolt is insertable, andthe bolt insertion portion has a smaller thickness than the valve body supporting portion, and a bolt insertion hole for insertion of the bolt is formed in the bolt insertion portion by cold-forging.3. The oil jet device according to claim 2 , further comprising:a nozzle configured to inject the pressure oil, whereinthe valve body supporting portion has a side surface including a notch surface formed at a corner of the valve body supporting portion, and the notch surface is formed with a nozzle insertion hole into which the nozzle is inserted.4. The oil jet device according to claim 2 , whereinthe valve body supporting portion has a second principal surface positioned on an opposite side to the first principal surface, ...

LUBRICATION SYSTEM FOR AN INTERNAL COMBUSTION ENGINE, AND METHOD FOR LUBRICATION

Embodiments for a lubrication system for an internal combustion engine are provided. In one example, a lubrication system for an internal combustion engine comprises a lubricant circuit, a radiator for cooling the lubricant, a heat accumulator arranged upstream of the engine for warming up the lubricant, the heat accumulator connected in parallel to the radiator, and a valve for switching over the lubricant circuit between the radiator and the heat accumulator. In this way, the oil may be rapidly heated during cold engine start conditions. 113-. (canceled)14. An engine method , comprising:during a first condition, pumping oil to piston cooling jets of an engine through a chemical heat accumulator; pumping oil to the piston cooling jets through a radiator, bypassing the heat accumulator, and', 'periodically recharging the heat accumulator by pumping engine oil through the heat accumulator; and', 'in response to engine knocking, interrupting the recharge., 'during a second condition15. The method of claim 14 , wherein the first condition comprises oil temperature below a cold threshold claim 14 , and wherein the second condition comprises oil temperature at or above the cold threshold.16. The method of claim 14 , wherein interrupting the recharge further comprises pumping oil to the piston cooling jets through the radiator claim 14 , and bypassing the heat accumulator.17. The method of claim 14 , further comprising claim 14 , during a third condition claim 14 , pumping oil directly to the piston cooling jets.18. The method of claim 17 , wherein the third condition comprises the heat accumulator being below a charge threshold. The present application is a continuation of U.S. patent application Ser. No. 13/413,408, entitled “LUBRICATION SYSTEM FOR AN INTERNAL COMBUSTION ENGINE, AND METHOD FOR LUBRICATION,” filed Mar. 6, 2012, which claims priority to German Patent Application No. 102011005496.0, filed on Mar. 14, 2011, the entire contents of each of which are hereby ...

PISTON COOLING JET FOR AN INTERNAL COMBUSTION ENGINE

A piston cooling jet for an internal combustion engine includes a body having a coolant duct extending between a coolant duct inlet and a coolant duct outlet fluidly connected to a coolant nozzle. The piston cooling jet includes a plunger having a plunger stem and a plunger head. The plunger is movable within the coolant duct of the body between a closing position that closes the coolant duct inlet and an opening position that opens the coolant duct inlet. The piston cooling jet further includes a biasing spring coupled to the plunger to bias it towards the closing position. A plunger coolant channel has an inlet at the plunger head and an outlet at the plunger stem, channeling coolant downstream of the plunger head when the plunger is in the opening position. 111-. (canceled)12. A piston cooling jet for an internal combustion engine comprising:a body having a coolant duct extending between a coolant duct inlet and a coolant duct outlet and fluidly connected to a coolant nozzle;a plunger including a plunger stem, a plunger head and at least one plunger coolant channel having a channel inlet at the plunger head and a channel outlet at the plunger stem; anda biasing spring arranged within the coolant duct and biasing the plunger towards the closing position;wherein the plunger is configured to move within the coolant duct between a closing position wherein the plunger head closes the coolant duct inlet and an opening position wherein the plunger head spaced from the coolant duct inlet to open the coolant duct for channeling coolant downstream of the plunger head.13. The piston cooling jet according to claim 12 , wherein at least part of the plunger coolant channel comprises a recess provided in at least one of the plunger stem or the plunger head.14. The piston cooling jet according to claim 13 , wherein at least one of the plunger stem or the plunger head comprising a cross-shaped cross section with respect to a plunger longitudinal axis.15. The piston cooling jet ...

ENGINE WITH A PISTON HEATING SYSTEM AND METHOD FOR OPERATION THEREOF

Methods and systems are provided for actively heating pistons in combustion chambers to decrease a torque imbalance in an engine. In one example, a method for operation of an engine includes determining a variation between compression ratios in a first combustion chamber and a second combustion chamber and operating a piston heating system to apply a targeted amount of heat to a first piston assembly based on the variation between the compression ratios, the first piston assembly including a first piston positioned within the first combustion chamber. 1. A method for operation of an engine , comprising:determining a variation between compression ratios in a first combustion chamber and a second combustion chamber; andoperating a piston heating system to apply a targeted amount of heat to a first piston assembly based on the variation between the compression ratios, the first piston assembly including at least a first piston positioned within the first combustion chamber.2. The method of claim 1 , where operating the piston heating system includes activating a heater coupled to a lubrication line claim 1 , the lubrication line including a nozzle directing lubricant to a first piston rod coupled to the first piston and a crankshaft during engine operation.3. The method of claim 1 , where operating the piston heating system includes activating a heater coupled to a lubrication line claim 1 , the lubrication line including a nozzle directing lubricant to an underside of the first piston during engine operation.4. The method of claim 1 , where operating the piston heating system includes activating an induction heater coupled a section of a cylinder block adjacent to the first piston.5. The method of claim 1 , further comprising inhibiting heating of a second piston assembly based on the variation between the compression ratios claim 1 , the second piston assembly including at least a second piston positioned in the second combustion chamber.6. The method of claim 1 , ...

SYSTEMS AND METHODS FOR PISTON COOLING

Methods and systems are provided for supplying cooling oil to a piston of an engine cylinder. In one example, a method may include repeatedly activating an oil supply only during a part of a cylinder cycle synchronous with a reciprocating motion of the piston. In particular, supply of cooling oil may be initiated by displacing a poppet valve arranged within a piston cooling assembly via a reciprocating motion of the piston. 1. A method for an engine , comprising:repeatedly activating an oil supply only during a part of a cylinder cycle synchronous with a frequency of piston reciprocating motion.2. The method of claim 1 , wherein the oil supply is activated by the piston reciprocating motion.3. The method of claim 2 , wherein the oil supply is provided to a piston via a piston cooling assembly including a poppet valve.4. The method of claim 3 , wherein the oil supply is activated by displacing the poppet valve via the piston reciprocating motion claim 3 , and wherein a skirt of the piston displaces the poppet valve.5. The method of claim 4 , wherein activating the oil supply further comprises squirting a stream of oil to an underside of the piston.6. The method of claim 5 , wherein the poppet valve has a valve stroke allowing the oil supply to be activated for at least 60 degrees of crank rotation in the cylinder cycle.7. The method of claim 5 , wherein the piston cooling assembly is fluidically coupled to and receives oil from an oil gallery.8. The method of claim 1 , wherein the oil is returned to an oil sump in a crankcase of the engine claim 1 , the method further comprising not activating the oil supply during a remaining part of the cylinder cycle.914-. (canceled)15. A method for an engine claim 1 , comprising:delivering oil to a piston during a first portion of a cylinder cycle, the piston arranged within a cylinder of the engine; andnot delivering the oil to the piston during a second portion of the cylinder cycle.16. The method of claim 15 , wherein the ...

PISTON COOLING JETS

An oil spray system for use in an engine for spraying directly onto a piston or cylinder wall, includes a supply line having at least one nozzle mounted to the supply line and at least one outlet on the nozzle. The system can include a control device. The control device can be mounted to the supply line. The nozzle and/or outlet is configurable to provide a predetermined spray direction or pattern. 1. An oil spray system for use in an engine , for spraying a stream of oil directly onto a piston or cylinder wall , comprising:a supply line; andat least one nozzle mounted to the supply line, the at least one nozzle having at least one outlet,wherein the at least one nozzle is configurable to provide at least one predetermined spray direction or pattern.2. The oil spray system of claim 1 , including a control device mounted to the supply line.3. The oil spray system of claim 1 , wherein the supply line is a manifold having at least two nozzles mounted thereto.4. The oil spray system of claim 3 , wherein the at least two nozzles are configured to provide converging and/or diverging spray patterns.5. The oil spray system of claim 1 , wherein each nozzle includes at least two outlets.6. The oil spray system of claim 5 , wherein the at least two outlets are configured to provide converging and/or diverging spray patterns.7. The oil spray system of claim 1 , wherein the control device is positioned between an oil supply and a first of the at least one nozzle.8. The oil spray system of claim 1 , wherein each nozzle is an element separate from the supply line and is attached thereto.9. The oil spray system of claim 1 , wherein a connecting portion between the supply line and each nozzle extends outwardly from the supply line.10. The oil spray system of claim 9 , wherein the nozzle includes at least two outlets claim 9 , the outlets formed in the nozzle at different distances from a juncture of the nozzle and the supply line.11. The oil spray system of claim 2 , wherein the ...

PISTON COOLING SYSTEM

A piston cooling system includes: a nozzle pipe portion which communicates with an oil passage which is provided in an internal combustion engine and which extends towards an interior of a cylinder bore; and a flow path forming member which is fixed to a distal end portion of the nozzle pipe portion and in which a plurality of oil jetting paths are formed, wherein: the distal end portion comprises an expanded pipe portion where the nozzle pipe portion is expanded and the flow path forming member is fittingly inserted into the expanded pipe portion; the flow path forming member has a distal end face which is exposed to an exterior portion at a distal end side of the expanded pipe portion; and the flow path forming member is locked in the expanded pipe portion by deforming a distal end edge of the expanded pipe portion. 1. A piston cooling system comprising:a nozzle pipe portion which communicates with an oil passage which is provided in an internal combustion engine and which extends towards an interior of a cylinder bore; anda flow path forming member which is fixed to a distal end portion of the nozzle pipe portion and in which a plurality of oil jetting paths are formed to thereby cool a piston within the cylinder bore by jetting oil from the oil jetting paths towards a back side of the piston, wherein:the distal end portion comprises an expanded pipe portion where the nozzle pipe portion is expanded and the flow path forming member is fittingly inserted into the expanded pipe portion;the flow path forming member has a distal end face which is exposed to an exterior portion at a distal end side of the expanded pipe portion; andthe flow path forming member is locked in the expanded pipe portion by deforming a distal end edge of the expanded pipe portion so as to provide a locking portion which locks the distal end face of the flow path forming member.2. The piston cooling system according to claim 1 , whereinthe distal end edge of the expanded pipe portion projects ...

SYSTEM AND METHOD FOR COOLING ENGINE PISTONS

An engine cooling system and method for operating the engine cooling system is disclosed. In one example, engine oil is sprayed on to a piston via piston cooling jets. The approach judges whether or not to operate the piston cooling jets based on a benefit assessment.

Spark-ignited internal combustion engine

A top surface of the piston includes a first region. A heat shielding film is formed on the first area. The top surface further includes a second region. There is no heat shielding film formed on the second region. Instead, the second area is mirror-finished. The top surface includes a central portion. A valve recess portion is formed on an intake side of the central portion. A squish portion is formed the intake side of the valve recess portion. The first area includes at least the central portion. The second area includes at least the squish portion.

TWO-STROKE ENGINE WITH FUEL INJECTION

In a two-stroke engine including a scavenging port () having an open end () opening out in a side wall of the cylinder bore () and communicating with a crank chamber (), the open end being configured to be closed and opened by the piston (), a fuel injection device () is mounted on the engine main body so as to inject fuel onto a back side of the piston and/or a part of the side wall of the cylinder bore located under the piston via the open end of the scavenging port or via the open lower end of the cylinder bore. The fuel deposited on the surfaces of the piston and the cylinder inner wall promotes the cooling of such parts. 1. A two-stroke engine , comprising:a piston slidably received in a cylinder bore defined in an engine main body;a scavenging port having an open end opening out in a side wall of the cylinder bore and communicating with a crank chamber, the open end being configured to be closed and opened by the piston; anda fuel injection device mounted on the engine main body and configured to inject fuel onto a back side of the piston and/or a part of the side wall of the cylinder bore located under the piston.2. The two-stroke engine according to claim 1 , wherein the fuel injection device is mounted on a part of the engine main body defining a part of the scavenging port.3. The two-stroke engine according to claim 2 , wherein the fuel injection device is configured to inject fuel at a timing when the piston is near a top dead center thereof claim 2 , and a part of the cylinder bore located under the piston communicates with the scavenging port.4. The two-stroke engine according to claim 3 , wherein a fuel injection axial line of the fuel injection device is directed obliquely upward claim 3 , and passes through the open end of the scavenging port.5. The two-stroke engine according to claim 3 , wherein a fuel injection axial line of the fuel injection device is directed obliquely upward claim 3 , and passes through an open lower end of the cylinder bore.6 ...

Oil Jet

A body of an oil jet is provided with: an oil supply port; a cylinder; and an oil injection port. A piston valve is accommodated in the cylinder. The piston valve forms in the cylinder a differential pressure room which is a closed compartment. In the piston valve, an orifice which makes the differential pressure room being communicated with a side of the oil supply port is formed. The piston valve is biased toward a position at which the oil injection port is closed by a spring. A first oil injection nozzle is connected to the oil injection port. A leak hole which allows oil to be leaked outside of the cylinder from the differential pressure room is open at the side surface of the cylinder. Further, a second oil injection nozzle is connected to the leak hole. 1. An oil jet , comprising:a body that has an oil supply port which opens into an oil passage in a cylinder block of an internal combustion engine, a cylinder one end of which is communicated with the oil supply port and another end of which is closed, and an oil injection port which opens on a side surface of the cylinder;a piston valve that is accommodated in the cylinder to form a closed compartment in the cylinder, and includes an orifice which makes the closed compartment being communicated with a side of the oil supply port;a spring that biases the piston valve toward a position at which the oil injection port is closed; anda first oil injection nozzle that is connected to the oil injection port and is fixing a direction of injection of oil,wherein a leak hole which allows oil to be leaked outside the cylinder from the closed compartment is open at the side surface of the cylinder, the leak hole being configured as a hole in which a flow rate is determined based on Hagen-Poiseuille law, andwherein the oil jet further comprises:a stopper for limiting a moving range of the piston valve so that the leak hole is not covered by the piston valve; and a second injection nozzle that is connected to the leak hole ...

TWO-PIECE TYPE OIL JET ASSEMBLY AND METHOD OF MANUFACTURING THE SAME

There is provided a two-piece type oil jet assembly manufactured in such a manner that a nozzle part and a valve part are separated from each other, the nozzle part is changed in accordance with the type of vehicle, the valve part is standardized, and the nozzle and valve parts are combined with each other, thereby providing the effects of reducing manufacturing cost, simplifying a manufacturing process, and ensuring competitiveness in markets. 1. An oil jet assembly for injecting oil , introduced from an oil gallery of an engine block for a vehicle , to a piston , the oil jet assembly comprising:a nozzle part configured to function as a first piece, and adapted to include a head that has a cap and hollow cylindrical shape and that is configured such that a top surface thereof is closed, a bottom surface thereof is open, and a side surface thereof communicates with a tube for injecting oil; anda valve part configured to function as a second piece, and adapted such that a body thereof is formed using a retainer configured to be inserted into the open bottom surface of the head of the nozzle part, to have a hollow cylindrical shape, and to have open top and bottom surfaces, a spring is mounted inside the retainer, and a ball is inserted below the spring;wherein the nozzle part and the valve part are combined with each other.2. The oil jet assembly of claim 1 , wherein the head and the retainer are manufactured using a thin pipe made of steel material.3. The oil jet assembly of claim 2 , wherein a bend bent inward is formed along a periphery of a top surface of the retainer claim 2 , a bend bent inward is formed along a periphery of a bottom surface of the retainer claim 2 , the bottom surface of the retainer is open and forms an entrance claim 2 , and an inner surface of the bend of the bottom surface provides a valve seat that comes into contact with the ball.4. The oil jet assembly of claim 3 , wherein the retainer is inserted into the head so that a top surface of ...

SELECTIVE INTERNAL DISTRIBUTION OF ENGINE MOTOR OIL

Engine motor oil drawn from an oil sump by an oil pump is forced to flow through a primary flow path to moving engine parts at pressures spanning a first pressure range and a second pressure range which is greater than the first pressure range. When pressure is within the first pressure range, some engine motor oil flow may be diverted to a secondary flow path having piston cooling jets which spray engine motor oil toward undercrown surfaces of engine pistons. When pressure is within the second pressure range, some engine motor oil flow is diverted to the piston cooling jets and also to a tertiary flow path which may be a return to the oil sump. 1. An internal combustion engine comprising:an oil sump for holding engine motor oil;an oil pump for forcing engine motor oil drawn from the oil sump to flow under pressure through a primary flow path for delivering engine motor oil to moving parts of the engine including parts operatively associated with pistons which reciprocate within engine cylinders;a pressure regulating mechanism comprising an inlet port which is open to the primary flow path at a location between the oil pump and the moving parts of the engine, a first outlet port, and a second outlet port,the pressure regulating mechanism being responsive to a first range of oil pressure at the inlet port for controlling flow of engine motor oil from the primary flow path to the first outlet port while disallowing engine motor oil flow to the second outlet port,the pressure regulating mechanism being responsive to a second range of oil pressure at the inlet port greater than the first range of oil pressure to provide for engine motor oil to flow from the primary flow path both to the first outlet port and to the second outlet port; anda secondary flow path through which engine motor oil is delivered from the first outlet port to the pistons.2. The internal combustion engine as set forth in in which the secondary flow path comprises cooling jets through which engine ...

CONNECTING ROD AND ASSEMBLY COMPRISING A PISTON AND A CONNECTING ROD

A connecting rod for an internal combustion engine may include a connecting rod shank, a large connecting rod eye, and a small connecting rod eye with a pin bore. An end face of the small connecting rod eye may also include at least one overhang, the overhang running parallel to a central axis of the pin bore over its entire width transverse to the central axis of the pin bore. An edge of the overhang may also run parallel to the central axis of the pin bore. 1. A connecting rod for an internal combustion engine , comprising:a connecting rod shank;a large connecting rod eye; anda small connecting rod eye with a pin bore;wherein an end face of the small connecting rod eye has at least one overhang running parallel to a central axis of the pin bore over an entire width of the pin bore transverse to the central axis of the pin bore; andwherein an edge of the at least one overhang runs parallel to the central axis of the pin bore.2. The connecting rod as claimed in claim 1 , wherein the at least one overhang includes two opposite overhangs running parallel to the central axis of the pin bore claim 1 , the edges of the overhangs running parallel to the central axis of the pin bore.3. The connecting rod as claimed in claim 1 , wherein the small connecting rod eye has at least one concave curvature running directly below an edge parallel to the central axis of the pin bore over the entire width of the pin bore.4. The connecting rod as claimed in claim 3 , wherein the small connecting rod eye has two concave curvatures running on both sides directly below the edges parallel to the central axis of the pin bore over entire width of the pin bore.5. The connecting rod as claimed in claim 1 , wherein the end face of the small connecting rod eye has at least one of a bore and a tub-shaped recess.6. The connecting rod as claimed in claim 5 , wherein the bore is formed within the recess.7. The connecting rod as claimed in claim 1 , wherein the end face of the small connecting rod ...

SUB-ASSEMBLY CONSISTING OF A PISTON AND AN INJECTION NOZZLE FOR AN INTERNAL COMBUSTION ENGINE

A sub-assembly may include a piston and an injection nozzle for cooling oil for an internal combustion engine. The piston may have a piston skirt and a piston head, where the piston may have a piston crown with an underside, a circumferential ring part, and in the region of the ring part, a circumferential cooling channel with at least one feed opening for the cooling oil. The piston may also have a jet divider for the cooling oil on the underside of the piston crown adjacent to the at least one feed opening. The injection nozzle may be arranged below the jet divider and may be oriented toward the jet divider. 1. A sub-assembly comprising a piston and an injection nozzle for cooling oil for an internal combustion engine , the piston having:a piston skirt,a piston head having a piston crown with an underside, a circumferential ring part and, in the region of the ring part, a circumferential cooling channel with at least one feed opening for the cooling oil, anda jet divider for the cooling oil on the underside of the piston crown adjacently to the at least one feed opening,wherein the injection nozzle is arranged below the jet divider and is oriented toward the jet divider.2. The sub-assembly as claimed in claim 1 , wherein a center axis of the injection nozzle is oriented parallel to a center axis of the piston.3. The sub-assembly as claimed in claim 1 , wherein a center axis of the injection nozzle encloses an acute angle with a center axis of the piston.4. The sub-assembly as claimed in claim 1 , wherein the jet divider has a substantially V-shaped cross section with the formation of an edge which claim 1 , starting from a center axis of the piston claim 1 , is arranged toward outside of the piston in the direction of the cooling channel.5. The sub-assembly as claimed in claim 1 , wherein the jet divider is configured in one piece with the piston head.6. The sub-assembly as claimed in claim 1 , wherein the jet divider is configured as a separate component ...

OIL PRESSURE SWITCH, APPARATUS FOR DIAGNOSING PISTON COOLING OIL JET, AND METHOD OF CONTROLLING THE SAME

An oil pressure switch, which is connected in an oil path of a piston oil cooling jet to diagnose oil pressure, includes an upper body and a lower body, in which a plunger vertically moves according to oil pressure; a fixing plate that is disposed between the upper body and the lower body; a moving plate that selectively contacts a fixing plate according to movement of the plunger; a spring that generates an elastic force in a direction in which the moving plate selectively contacts the fixing plate; an output terminal that outputs an output signal according to contact between the moving plate and the fixing plate; and a parallel resistor that is electrically connected with the output terminal and electrically connected with a control resistor of a controller. 1. An oil pressure switch connected in an oil path of a piston oil cooling jet to diagnose oil pressure , the oil pressure switch comprising:an upper body and a lower body, in which a plunger vertically moves according to oil pressure;a fixing plate that is disposed between the upper body and the lower body;a moving plate that selectively contacts a fixing plate according to movement of the plunger;a spring that generates an elastic force in a direction in which the moving plate selectively contacts the fixing plate;an output terminal that outputs an output signal according to contact between the moving plate and the fixing plate; anda parallel resistor that is electrically connected with the output terminal and electrically connected with a control resistor of a controller.2. An apparatus for diagnosing a failure in a piston oil cooling jet having an oil path through which oil flows for cooling a piston , the apparatus comprising:a solenoid valve selectively opening and closing the oil path;an oil pressure switch connected in the oil path, outputting an output signal through a switch output terminal according to a pressure of oil that flows through the oil path, and to which a parallel resistor is ...

OIL PRESSURE SWITCH, APPARATUS FOR DIAGNOSING PISTON COOLING OIL JET, AND METHOD USING THE SAME

An oil pressure switch, which is connected in an oil path of a piston oil cooling jet to diagnose oil pressure, includes an upper body and a lower body, in which a plunger vertically moves according to oil pressure; a fixing plate that is disposed between the upper body and the lower body; a moving plate that selectively contacts a fixing plate according to movement of the plunger; a spring that generates an elastic force in a direction in which the moving plate selectively contacts the fixing plate; an output terminal that outputs an output signal according to contact between the moving plate and the fixing plate; and a parallel resistor that is electrically connected with the output terminal and electrically connected with a control resistor of a controller. 1. An apparatus for diagnosing a failure in a piston oil cooling jet having an oil path through which oil flows for cooling a piston , the apparatus comprising:a solenoid valve selectively opening and closing the oil path;an oil pressure switch connected in the oil path, outputting an output signal through a switch output terminal according to a pressure of oil that flows through the oil path, and to which a parallel resistor is electrically connected to a front end of the switch output terminal; anda controller having a control resistor of which a first end is electrically connected with a control power and a second end is electrically connected with the switch output terminal of the oil pressure switch through a connector,wherein the controller controls opening and closing of the solenoid valve and determines whether the solenoid valve and the oil pressure switch malfunction based on an input voltage of a control input terminal of the controller.2. The apparatus of claim 1 , wherein claim 1 , when the input voltage of the control input terminal is within a predetermined range from a first voltage claim 1 , the controller determines that the controller and the oil pressure switch are not electrically ...

AXIAL FLUID SPRAY NOZZLE WITH VENT VALVE

A spray nozzle comprising: a body comprising a duct, a seat arranged at the first end, and including an opening forming an inlet, a guide comprising a tubular jacket and a retaining member, the retaining member retaining the jacket in the duct, a plug mounted to slide axially in the channel of the jacket, the plug being pushed back against the opening by a spring, and in abutment against the bottom of the jacket, the guide comprising a radial vent, which comprises a vent channel isolated from the flow of fluid and connecting the inside of the guide jacket to a bore formed in the body of the spray nozzle. 119-. (canceled)20. Axial spray nozzle with vented valve , comprising:a spray nozzle body comprising an internal conduit, extending along an elongation axis XX′, said conduit having a symmetry of revolution about the elongation axis XX′, comprising a first end and a second end, and defined by an internal surface of the spray nozzle body, the second end forming a fluid outlet,a valve seat located at the first end of the internal conduit, comprising a port forming a fluid inlet to the spray nozzle,a valve guide comprising a tubular sleeve and a retaining element, the sleeve forming a channel, open at a first end, and closed by a bottom at a second end, the retaining element holding the sleeve in the internal conduit and coaxially with said conduit, the first end facing and being set beck from the port in the valve seat, the sleeve leaving a space between its peripheral surface and the internal surface of the spray nozzle body so as to enable fluid flow along a fluid flow direction, between the fluid inlet and outlet,a plug mounted free to slide axially in the channel of the sleeve, the plug being pushed into contact with the port in the valve seat by a compression spring, housed in the sleeve and stopped in contact with the bottom of the sleeve, so as to close off the port in the valve seat,the valve guide also comprising a radial vent, that comprises a vent channel ...

A NOZZLE FOR COOLING ENGINE PISTONS

The present invention relates to a cooling jet nozzle () for an engine piston. The nozzle () comprises a cooling stream pathway (), in which the internal cross-sectional dimensions of the pathway vary along the length of the pathway; and a plunger () located within the cooling stream pathway to impinge a cooling feedstream received within the pathway to provide a cooling jet. The plunger () is axially moveable within the pathway to adjust the internal cross-sectional dimensions of the cooling jet. 1. A cooling jet nozzle for an engine piston , in which the nozzle comprises:a cooling stream pathway, in which the internal cross-sectional dimensions of the pathway vary along the length of the pathway; anda plunger located within the cooling stream pathway to impinge a cooling feedstream received within the pathway to provide a cooling jet, characterized in that the plunger is axially moveable in order to adjust the internal cross-sectional dimensions of the cooling jet.2. A nozzle as claimed in claim 1 , characterized in that the plunger is located at or adjacent the cooling jet nozzle outlet.3. A nozzle as claimed in claim 1 , characterized in that the plunger is located substantially centrally between opposing walls forming the pathway.4. A nozzle as claimed in claim 1 , characterized in that the plunger is axially moveable in a direction extending substantially parallel to the direction of flow of the cooling feedstream.5. A nozzle as claimed in claim 1 , characterized in that the plunger is moveable between a first open position to provide a first cooling jet having a first internal cross-sectional dimension claim 1 , and at least a second open position to provide a second cooling jet having a second internal cross-sectional dimension claim 1 , and in which the first internal cross-sectional dimension is greater than the second internal cross-sectional dimension.6. A nozzle as claimed in claim 5 , characterized in that the plunger is resiliently biased towards the ...

CLOSED LOOP ELECTRONIC CONTROL FOR THE REDUCTION OF SOOT PRODUCED IN DIESEL, GASOLINE AND ALTERNATIVE-FUELED ENGINES

A system and method of reducing soot and/or improving the efficiency of a motor. The system and method regulates the supply of cooling oil to a cooling section of a cylinder based upon observed parameters. These parameters can include such things as engine temperature, load, rpm etc. The control can be provided by using a look up table. 1. A system for cooling a piston of an internal combustion engine having at least one cylinder that receives the piston wherein the cylinder defines a combustion region and a cooling region , wherein the internal combustion engine includes an oil supply system that supplies oil to the cooling region of the cylinder , the system comprising:one or more sensors that sense performance parameters of the internal combustion engine;an oil gating system that is controllable so that the amount of oil provided to the cooling region is adjustable;a controller that receives signals from the one or more sensors and provides control signals to the oil gating system wherein the controller determines the amount of oil to provide to the cooling region based upon the one or more sensors so that the oil provided to the cooling region of the cylinder is reduced to inhibit excess soot production.2. The system of claim 1 , wherein the controller determines the amount of oil to provide to the cooling region based upon one or more sensors so that the oil provided to the cooling region of the cylinder is reduced during periods of low load on the engine.3. The system of claim 1 , wherein the one or more sensors include RPM sensors claim 1 , temperature sensors and fuel sensors.4. The system of claim 1 , wherein the oil gating system comprises at least one controllable valve that allows a metered amount of oil to flow from the oil supply system to the cooling region of the cylinder.5. The system of claim 4 , wherein the controllable valve is a pulse width modulated (PWM) valve that receive pulse signals from the controller to regulate the amount of oil that is ...

ENGINE OIL SUPPLY APPARATUS

An engine oil supply apparatus includes: a cylinder block; a shaft supporting member which bears a crank journal of a crank shaft in cooperation with a journal supporting wall section; and a nozzle which injects oil to a piston. The cylinder block includes a first oil supply path which extends in a cylinder bank direction at a position of one side section of the cylinder in a width direction that is perpendicular to the cylinder bank direction, a branch oil path which branches from the first oil supply path at a position of the journal supporting wall section and which supplies oil to a crank bearing section by which the crank journal is borne, and a second oil supply path which extends in the cylinder bank direction at a position further outward than the first oil supply path in the width direction and which supplies oil to the nozzle. 1. An engine oil supply apparatus , comprising: a cylinder block including a plurality of journal supporting wall sections which are aligned in a cylinder bank direction and each of which supports a crank journal of a crank shaft and a cylinder communicating with a crank chamber formed between the journal supporting wall sections that are adjacent to each other; a shaft supporting member which is assembled to the journal supporting wall section and which bears the crank journal of the crank shaft in cooperation with the journal supporting wall section; and a nozzle which is fixed to a ceiling portion of the crank chamber and which injects oil to a piston that slides inside the cylinder , whereinthe cylinder block includes a first oil supply path which extends in the cylinder bank direction at a position of one side section of the cylinder in a width direction that is perpendicular to the cylinder bank direction, a branch oil path which branches from the first oil supply path at a position of the journal supporting wall section and which supplies oil to a crank bearing section by which the crank journal is borne, and a second oil ...

Valve for controlling piston cooling jets in an internal combustion engine

A valve for controlling piston cooling jets in an internal combustion engine is disclosed. The valve includes a valve body equipped with an oil inlet for drawing oil from an oil gallery and an oil outlet for connection with a piston cooling jet gallery. The valve body is equipped with an air inlet for drawing air from an intake manifold of the engine, and with a valve element configured to be actuated by the pressure of the oil entering the oil inlet and of the air entering the air inlet.

Oil jet system for internal combustion engine, and control method for oil jet system

In an oil jet system that directs an oil jet toward a back face of a piston, when a coolant temperature of an engine has increased to a predetermined temperature in a stopped state of the oil jet, the piston is cooled by starting the oil jet. When a lubricating oil temperature of the engine has decreased to a predetermined temperature in an operated state of the oil jet, a delay time is determined based on a variation amount in engine rotation speed and a variation amount in intake air filling factor during a predetermined period, and the oil jet is stopped after a lapse of the delay time.

INTERNAL COMBUSTION ENGINE

An internal combustion engine has a lower link rotatably mounted to a crankpin of a crankshaft, an upper link having a first upper link end rotatably connected to a piston pin of a piston and a second upper link end rotatably connected to a first lower link end side of the lower link through a first connecting pin, and a control link having a first control link end supported on a cylinder block and a second control link end rotatably connected to a second lower link end side of the lower link through a second connecting pin. When viewed in an axial direction of the crankshaft, the second connecting pin is arranged to swing along a lateral direction substantially perpendicular to a center axis of a cylinder of the internal combustion engine. 15.-. (canceled)6. An internal combustion engine , comprising:a lower link rotatably mounted to a crankpin of a crankshaft;an upper link having a first upper link end rotatably connected to a piston pin of a piston and a second upper link end rotatably connected to a first lower link end side of the lower link through a first connecting pin; anda control link having a first control link end supported on a cylinder block and a second control link end rotatably connected to a second lower link end side of the lower link through a second connecting pin,wherein, when viewed in an axial direction of the crankshaft, the second connecting pin is arranged to swing along a lateral direction substantially perpendicular to a center axis of a cylinder of the internal combustion engine, andwherein the internal combustion engine further comprises an oil jet that injects lubricating oil toward a connection part between the lower link and the control link from the lateral direction.7. The internal combustion engine according to claim 6 , a first injection nozzle that injects the lubricating oil toward a back side of the piston, and', 'a second injection nozzle that injects the lubricating oil toward the connection part between the lower link and ...

CRANKCASE OIL CATCHER

A crankcase oil catcher configured for placement above a crankshaft and below a piston is described. In one particular example, the crankcase oil catcher has a contour that catches dispersed oil within the crankcase while directing the oil away from a casing wall and towards a crank sump along the contoured surface of the crankcase oil catcher. Inclusion of an aperture within the surface allows for passage of a connecting rod of the crankshaft while providing for a protruding lip around the perimeter of the aperture that prevents oil on the top surface from falling through the aperture. 1. A crankcase oil catcher configured for placement above a crankshaft and below a piston of an engine , comprising:one or more contoured surfaces for catching dispersed oil in the crankcase and directing the dispersed oil along the one or more contoured surfaces of the crankcase oil catcher to a crank sump, anda first aperture for a connecting rod of the crankshaft to pass through.2. The crankcase oil catcher of claim 1 , further comprising a protruding first lip extending around a perimeter of the first aperture that prevents oil on a top surface of the crankcase oil catcher from falling through the first aperture.3. The crankcase oil catcher of claim 2 , wherein the first aperture is sized for only passage of the connecting rod of the crankshaft.4. The crankcase oil catcher of claim 3 , wherein a width of the first aperture is smaller than a width of an engine cylinder associated with the connecting rod of the crankshaft.5. The crankcase oil catcher of claim 4 , wherein the crankcase oil catcher is configured to be spaced apart from a crankcase casing wall while preventing oil on the one or more contoured surfaces from contacting the crankcase casing wall.6. The crankcase oil catcher of claim 5 , wherein the one or more contoured surfaces of the crankcase oil catcher is further configured to substantially follow a contour of the crankcase casing wall in a plane perpendicular to a ...

Piston Cooling Configuration Utilizing Lubricating Oil From Bearing Reservoir In An Opposed-Piston Engine

Pressurized lubricating oil is accumulated in the bearings of opposed pistons and accumulated oil is dispensed therefrom for bearing lubrication and also for cooling the undercrowns of the pistons by jets of oil emitted from the bearings. 1. A piston cooling configuration for an opposed-piston engine , comprising:a piston with crown having an end surface shaped to form a combustion chamber with an end surface of an opposing piston;the crown including an undercrown:a bearing mounted in the piston between the undercrown and a small end of a connecting rod;the bearing including a wristpin;an oil reservoir in the wristpin in fluid communication with one or more wristpin oil outlet passages positioned to pass oil through the wristpin into a lubrication interface between the wristpin and a bearing surface;a wristpin oil inlet passage in fluid communication with the reservoir, and,at least one cooling jet outlet on one of a fixed part of the bearing and a moving part of the bearing;in which the cooling jet outlet is in fluid communication with the oil reservoir and is aimed toward an undercrown portion.2. The piston cooling configuration of claim 1 , in which the wristpin is received on the small end of the connecting rod.3. The piston cooling configuration of claim 2 , in which:the fixed part of the bearing includes a bearing member supporting the wristpin for rotatable oscillation with respect to the undercrown in response to movement of the piston; and,the cooling jet outlet includes an oil outlet passage in the bearing member.4. The piston cooling configuration of claim 3 , in which:the connecting rod includes an oil passage in fluid communication with the wristpin oil inlet passage; and,the oil outlet passage in the bearing member receives pressurized oil from the interface between the wristpin and the bearing surface5. The piston cooling configuration of claim 4 , in which the wristpin and the bearing surface form a rocking bearing.6. The piston cooling configuration ...

GALLERYLESS PISTON WITH SLOTTED RING GROOVE

A galleryless piston including a ring belt with three ring grooves is provided. Each ring groove is formed by an uppermost wall and a lower wall spaced from one another by a back wall. A pair of pin bosses depend from the upper wall, and pair of skirt panels depend from the ring belt and are coupled to the pin bosses by struts. An inner undercrown region is surrounded by the skirt panels and the struts and the pin bosses. A pair of outer pockets extend along the undercrown surface, and each outer pocket is surrounded by a portion of the ring belt and one of the pin bosses and the struts coupling the one pin boss to the skirt panels. The third ring groove includes an oil drain slot extending through the back wall to the outer pockets of the piston for conveying cooling oil. 1. A piston , comprising:an upper wall including an undercrown surface exposed from an underside of said piston,a ring belt depending from said upper wall and extending circumferentially around a center axis of said piston,said ring belt including a plurality of ring grooves extending circumferentially around said center axis and each formed by an uppermost wall and a lower wall spaced from one another by a back wall;a pair of pin bosses depending from said upper wall,a pair of skirt panels depending from said ring belt and coupled to said pin bosses by struts,an inner undercrown region extending along said undercrown surface and surrounded by said skirt panels and said struts and said pin bosses,a pair of outer pockets extending along said undercrown surface,each outer pocket being surrounded by a portion of said ring belt and one of said pin bosses and said struts coupling said one pin boss to said skirt panels, andone of said ring grooves including an oil drain slot extending through said back wall to at least one of said outer pockets of said piston.2. The piston of claim 1 , wherein said ring grooves of said ring belt include a first ring groove and a second ring groove and a third ring ...

Method and system of oil delivery in a combustion engine

Methods and systems are described for an oil delivery system of an engine. In one method, oil is pumped via a lower pressure oil pump to piston cooling jets while oil is separately pumped via a higher pressure oil pump to a cylinder head, bearings, a turbocharger, or a variable valve operation system. Herein, the higher and lower pressure oil pumps each draw oil from a common, shared sump, and return oil back to the common, shared sump.

Oil channel for engine

An engine block is disclosed. The engine block may have a cylinder. The engine block may also have a piston that may slide within the cylinder. Further, the engine block may have a liner positioned between the cylinder and the piston. The engine block may also have a groove disposed circumferentially about the liner. The groove may be in communication with the liner and the cylinder. The engine block may have at least two oil nozzles arranged spaced apart from each other. The oil nozzles may be configured to spray oil on the piston. The engine block may also have an oil channel configured to supply oil to at least one of the two oil nozzles via the groove.

Control device and control method for internal combustion engine

A control device for an internal combustion engine including a piston, an oil jet configured to inject oil toward the piston, and an actuator configured to adjust a supply flow rate of the oil to the oil jet. The control device includes an electronic control unit configured to control the actuator such that the supply flow rate under the same engine load and the same engine rotation speed increases as a degree of deterioration of the oil increases.

Oil jet apparatus of internal combustion engine

Provided is a valve housing configured to be inserted into an insertion hole that extends in a direction approximately orthogonal to an extending direction of an oil path and configured to be freely movable along an extending direction of the insertion hole. When an oil jet switching valve is closed, the tip end portion of the valve housing is configured to be pressed to the inner wall surface of the oil path by receiving an energized force from an energizing unit.

PISTON COOLING DEVICE

A piston cooling device includes a main body which includes a communication path communicating with an oil passage provided in the internal combustion engine, a nozzle pipe portion which includes an oil injection port for injecting an oil passing through the communication path, toward the piston, and a filter which is provided at an upstream side of the nozzle pipe portion in an oil flow path to filter the oil. The main body includes a cylindrical portion inserted into the oil passage. The filter has a bottomed cylindrical shape in which a filter side surface stands from a filter bottom surface, and is held inside the cylindrical portion. Filter holes are formed in the filter bottom surface and the filter side surface. The filter is disposed such that the filter bottom surface protrudes further upstream side in the oil flow path than a tip end of the cylindrical portion. 1. A piston cooling device comprising:a main body which is attached to an internal combustion engine and includes a communication path communicating with an oil passage provided in the internal combustion engine;a nozzle pipe portion which includes an oil injection port for injecting an oil passing through the communication path, toward the piston; anda filter which is provided at an upstream side of the nozzle pipe portion in an oil flow path to filter foreign matters in the oil,wherein the main body includes a. cylindrical portion inserted into the oil passage,wherein the filter has a bottomed cylindrical shape in which a filter side surface stands from a filter bottom surface, and is held inside the cylindrical portion,wherein filter holes are formed in the filter bottom surface and the filter side surface, andwherein the filter is disposed such that the filter bottom surface protrudes further upstream side in the oil flow path than a tip end of the cylindrical portion.2. The piston cooling device according to claim 1 , a large-diameter cylindrical portion which is positioned in contact with an ...

PISTON FOR AN INTERAL COMBUSTION ENGINE AND COVER PLATE FOR A PISTON

A piston for an internal combustion engine may include a piston head and a piston skirt. The piston skirt may include piston bosses disposed opposite one another having a boss bore and at least two shank walls disposed opposite one another having a running surface. A cover plate including a recess for receiving a connecting rod may be secured in a lower region of the piston skirt. The cover plate may have at least two longitudinal sides disposed opposite one another and at least two free ends disposed opposite one another. At least two grooves may be arranged in the lower region of the piston skirt on the at least two shank walls. The at least two free ends of the cover plate may be accommodated resiliently prestressed in the at least two grooves. 1. A piston for an internal combustion engine , comprising:a piston head and a piston skirt, wherein said piston skirt includes piston bosses disposed opposite one another having a boss bores, and at least two shank walls disposed opposite one another having a running surfaces,a cover plate including a recess for receiving a connecting rod secured in a lower region of the piston skirt, wherein the cover plate has two longitudinal sides disposed opposite one another and two free ends disposed opposite one another, andat least two grooves arranged in the lower region of the piston skirt on the at least two shank walls, wherein the two free ends of the cover plate are accommodated resiliently prestressed in the at least two grooves.2. The piston according to claim 1 , further comprising a moulding arranged between the recess and at least one of the two free ends of the cover plate claim 1 , wherein the moulding is configured in a spring-elastic manner and has a u-shaped or v-shaped cross-section.3. The piston according to claim 2 , wherein the moulding extends parallel to at least one of the two free ends.4. The piston according to claim 1 , wherein the cover plate further includes at least one latching element on each of the ...

SYSTEMS AND METHODS FOR PISTON COOLING

Methods and systems are provided for supplying cooling oil to a piston of an engine cylinder. In one example, a method may include repeatedly activating an oil supply only during a part of a cylinder cycle synchronous with a reciprocating motion of the piston. In particular, supply of cooling oil may be initiated by displacing a poppet valve arranged within a piston cooling assembly via a reciprocating motion of the piston. 1. A method for an engine , comprising:repeatedly activating an oil supply only during a part of a cylinder cycle synchronous with a frequency of piston reciprocating motion.2. The method of claim 1 , wherein the oil supply is activated by the piston reciprocating motion.3. The method of claim 2 , wherein the oil supply is provided to a piston via a piston cooling assembly including a poppet valve.4. The method of claim 3 , wherein the oil supply is activated by displacing the poppet valve via piston reciprocating motion claim 3 , and wherein a skirt of the piston displaces the poppet valve.5. The method of claim 4 , wherein activating the oil supply further comprises squirting a stream of oil to an underside of the piston.6. The method of claim 5 , wherein the poppet valve has a valve stroke allowing the oil supply to be activated for at least 60 degrees of crank rotation in the cylinder cycle.7. The method of claim 5 , wherein the piston cooling assembly is fluidically coupled to and receives oil from an oil gallery.8. The method of claim 1 , wherein the oil is returned to an oil sump in a crankcase of the engine claim 1 , the method further comprising not activating the oil supply during a remaining part of the cylinder cycle.9. A system claim 1 , comprising:an engine including a cylinder;a piston capable of reciprocating motion arranged within the cylinder, the piston including a skirt;a lubrication system comprising an oil gallery, a pump, and a piston cooling assembly fluidically coupled to the oil gallery, the piston cooling assembly ...

OIL JET FOR INTERNAL COMBUSTION ENGINE AND PISTON COOLING DEVICE FOR INTERNAL COMBUSTION ENGINE

An oil jet () has an injection nozzle () that injects engine oil supplied from an oil supply passage of the internal combustion engine toward a piston. The injection nozzle () has a first pipe () having a supply port () communicating with an oil supply passage side and a second pipe () having an injection orifice () that injects the engine oil. The first pipe () and second pipe () are joined together with their axes forming a predetermined angle. The injection orifice () is formed such that a cross section of the injection orifice () is greater than a minimum radial direction cross section of the first pipe (). 1. An oil jet for an internal combustion engine , which is provided inside the internal combustion engine and injects engine oil toward a back surface side of a piston , the oil jet comprising:an injection nozzle that injects the engine oil supplied from an oil supply passage of the internal combustion engine toward the piston, andthe injection nozzle having a first pipe communicating with an oil supply passage side and a second pipe having an injection orifice that injects the engine oil, and the first and second pipes being joined together with axes of the first and second pipes forming a predetermined angle, andthe injection orifice being formed such that across section of the injection orifice is greater than a minimum radial direction cross section of the first pipe.2. The oil jet for the internal combustion engine as claimed in claim 1 , wherein:the second pipe is formed such that a minimum radial direction cross section of the second pipe is greater than the minimum radial direction cross section of the first pipe.3. The oil jet for the internal combustion engine as claimed in claim 2 , wherein:the oil jet for the internal combustion engine is configured such that when a pressure of the engine oil supplied to the oil supply passage of the internal combustion engine is equal to or greater than a predetermined value, the engine oil is injected.4. The oil ...

STRUCTURE FOR ATTACHING OIL JET VALVE

A structure for attaching an oil jet valve includes a bracket secured to an internal combustion engine with a seal member, an attachment concavity extending through the interior of the bracket, an insertion hole extending through the interior of the internal combustion engine, an oil jet valve, a first stepped part formed in the oil jet valve, a second stepped part formed in the attachment concavity, and an interlocking member. The width of a wide part of the first stepped part is less than the width of a narrow part of the second stepped part. The width of the wide part of the first stepped part is less than the width of a portion, of the inner surface of the attachment concavity, that faces the wide part of the first stepped part. 1. An oil jet valve coupling structure comprising:a bracket fixed to an internal combustion engine with a seal member located in between;a coupling recess that extends inside the bracket and opens in an opposing surface opposed to the internal combustion engine;a socket that extends inside the internal combustion engine and opens in an opposing surface opposing the bracket;an oil jet valve including a first end a second end, wherein the oil jet valve is coupled to the internal combustion engine with the first end fitted into the coupling recess and the second fitted into the socket;a step-shaped first step formed on the oil jet valve, wherein the first step includes a wide portion, which is where the oil jet valve has a large width in a direction orthogonal to a direction in which the oil jet valve is fitted into the coupling recess and which is a fitted portion of the oil jet valve fitted into the coupling recess, and a narrow portion, which is formed closer to the internal combustion engine than the wide portion and which is where the oil jet valve has a small width in the orthogonal direction;a step-shaped second step formed in the coupling recess, wherein the second step includes a wide portion, which is where the coupling recess has ...

INDIVIDUAL PISTON SQUIRTER SWITCHING WITH CRANKANGLE RESOLVED CONTROL

One variation may include a product comprising a piston oil squirting system comprising at least one piston oil squirter operatively communicating with at least one engine oil channel and which is constructed and arranged to squirt oil at at least one piston; and at least one mechanism which is constructed and arranged to control a flow rate and a timing of at least one oil jet stream from the at least one piston oil squirter so that the oil jet stream flows at single or multiple intervals from a zero to a maximum flow rate within an engine cycle or a crankshaft revolution.

PISTON COOLING SYSTEM

An engine cylinder block includes a control valve and stratified layers defining a network internal to the cylinder block. The network includes a main feed line in fluid communication with the control valve, and branched and winding arterial channels extending from the main feed line with diameters that taper to define nozzles configured to spray coolant on sides of pistons carried within the cylinder block. 1. An engine cylinder block comprising:a control valve; andstratified layers defining a network internal to the cylinder block including a main feed line in fluid communication with the control valve, and branched and winding arterial channels extending from the main feed line with diameters that taper to define nozzles configured to spray coolant on sides of pistons carried within the cylinder block.2. The cylinder block of claim 1 , wherein the network is disposed within an intake side of the cylinder block.3. The cylinder block of claim 1 , wherein the main feed line radially traverses the cylinder block.4. The cylinder block of claim 1 , wherein a diameter of the main feed line increases as a distance from the control valve increases.5. The cylinder block of claim 1 , wherein the control valve is responsive to vehicle speed data.6. The cylinder block of claim 1 , wherein the sides are intake and exhaust sides of the pistons.7. The cylinder block of claim 1 , wherein the main feed line is configured to receive the coolant from a main oil gallery.8. The cylinder block of claim 1 , wherein the network further includes a coolant intake port disposed within the control valve.9. The cylinder block of claim 1 , wherein the stratified layers further define a main bearing saddle and wherein some of the channels extend toward the main bearing saddle.10. An engine comprising:a cylinder block of layer-on-layer material defining an internal intake port, an internal main feed line in fluid communication with the intake port, and an internal network of branched arterial ...

APPARATUS AND METHOD FOR CONTROLLING PISTON COOLING OIL JET

An apparatus for controlling a piston cooling oil jet may include a main gallery supplied with oil, an oil jet gallery defining an oil injection path such that the oil through the main gallery is introduced and is sprayed to a lower portion of a piston, an oil jet valve opening the oil injection path such that the oil supplied to the main gallery is introduced into the oil jet gallery, and a controller electrically connected to the oil jet valve, and determining a target oil pressure through a first factor value corresponding to an RPM and an engine load, a second factor value determined by a predetermined target oil pressure curve, and a third factor value corresponding to an RPM and an oil temperature in the main gallery to control an opening degree of the oil jet valve using the target oil pressure. 1. An apparatus for controlling a piston cooling oil jet , comprising:a main gallery supplied with oil;an oil jet gallery defining an oil injection path, wherein the oil passing through the main gallery is introduced thereinto and is sprayed to a lower portion of a piston;an oil jet valve opening the oil injection path, wherein the oil supplied to the main gallery is introduced into the oil jet gallery; anda controller electrically connected to the oil jet valve, the controller determining a target oil pressure through a first factor value corresponding to an RPM and an engine load, a second factor value determined by a predetermined target oil pressure curve, and a third factor value corresponding to an RPM and an oil temperature in the main gallery, to control an opening degree of the oil jet valve using the target oil pressure.2. The apparatus of claim 1 , wherein the controller including:a power compensation map setting device allowing the first factor value to be set;a target oil pressure curve setting device allowing the second factor value to be set;a temperature compensation map setting device allowing the third factor value to be set; anda determination ...

PISTON COOLING DEVICE

A cooling cavity is provided inside a piston of an internal combustion engine. Inlet/outlet holes of the cooling cavity are provided in a bottom surface of the piston. A first oil jet that sprays oil toward the inlet/outlet hole, a second oil jet that sprays oil toward a part different from the inlet/outlet hole are included. The first oil jet is caused to spray oil in preference to the second oil jet. 1. A piston cooling device that is installed in an internal combustion engine , the piston cooling device comprising:a cooling cavity that is provided inside the piston, and includes an inlet/outlet hole that opens on a bottom surface of the piston;a first oil jet that sprays oil toward the inlet/outlet hole; anda second oil jet that sprays oil toward a part different from the inlet/outlet hole,wherein the first oil jet sprays oil in preference to the second oil jet.2. The piston cooling device according to claim 1 , further comprising:an oil pump that generates an oil pressure that is necessary to spray oil;wherein when a discharge oil amount of the oil pump is smaller as compared with an oil amount necessary to cause oil to be sprayed from both of the first oil jet and the second oil jet, the discharge oil amount is consumed preferentially in oil spray from the first oil jet.3. The piston cooling device according to claim 2 ,wherein the first oil jet and the second oil jet communicate with the oil pump via a common oil pressure path, anda valve opening pressure of the first oil jet is a lower pressure as compared with a valve opening pressure of the second oil jet.4. The piston cooling device according to claim 3 ,wherein the oil pump is a two stage type oil pump having a function of switching a generated oil pressure to two stages of a low pressure side and a high pressure side,the valve opening pressure of the first oil jet is equal to or lower than the generated oil pressure of the low pressure side, andthe valve opening pressure of the second oil jet is higher ...

PISTON OIL JET APPARATUS OF ENGINE

A piston oil jet apparatus of an engine includes a control valve guide installed inside a cylinder block which includes a cylinder in which a piston is lifted and including an oil inlet provided at one side and oil supply holes controlling oil supply at another side. A control valve is coupled to the control valve guide and opens/closes the oil supply holes. A piston cooling jet is connected to the oil supply holes to inject a cooling oil toward the piston. An actuator moves the control valve. 1. A piston oil jet apparatus of an engine comprising:a control valve guide installed in a cylinder block which includes a cylinder in which a piston is lifted, the control valve guide including an oil inlet formed at one side thereof and oil supply holes which control cooling oil supply at another side thereof;a control valve coupled to the control valve guide and opening or closing the oil supply holes;a piston cooling jet connected to the oil supply holes to inject a cooling oil toward the piston; andan actuator moving the control valve.2. The piston oil jet apparatus of claim 1 , whereinthe control valve is inserted into the control valve guide to open or close the oil supply holes.3. The piston oil jet apparatus of claim 2 , whereinthe actuator is an electric motor which rotates the control valve to open or close the oil supply holes.4. The piston oil jet apparatus of claim 2 , wherein the control valve guide has a circular pipe shape claim 2 , andwherein the control valve contacts an interior circumference of the circular pipe having a curved surface to open or close the oil supply holes in a forward rotation and a reverse rotation.5. The piston oil jet apparatus of claim 4 , wherein the cylinder is provided in plural claim 4 , andwherein the control valve guide has the oil supply holes respectively corresponding to each cylinder.6. The piston oil jet apparatus of claim 5 , wherein the control valve includes opening/closing members corresponding to the respective oil ...

APPARATUS AND METHOD FOR DIAGNOSING FAILURE OF PISTON COOLING JET OF ENGINE

An apparatus for diagnosing failure of a piston cooling jet of an engine includes an oil line for a piston cooling jet arranged in a cylinder block in a longitudinal direction, a piston cooling jet mounted at the oil line for the piston cooling jet to inject oil to a piston, a solenoid valve mounted at an inlet of the oil line for the piston cooling jet to selectively allow an injection operation of the piston cooling jet, an oil pressure detecting means mounted at the oil line for the piston cooling jet after the solenoid valve to detect oil pressure, and a control unit configured to receive a detection signal of the oil pressure detecting means and determine whether the solenoid valve is in a failure state. 1. An apparatus for diagnosing a failure of a piston cooling jet of an engine , comprising:an oil line for a piston cooling jet arranged in a cylinder block in a longitudinal direction;a piston cooling jet mounted at the oil line for the piston cooling jet to inject oil to a piston;a solenoid valve mounted at an inlet of the oil line for the piston cooling jet to selectively allow an injection operation of the piston cooling jet;an oil pressure detecting means mounted at the oil line for the piston cooling jet after the solenoid valve to detect oil pressure; anda control unit configured to receive a detection signal of the oil pressure detecting means and determine whether the solenoid valve is in a failure state.2. The apparatus of claim 1 , further comprising:a driver warning means operated by the control unit when it is determined that the solenoid valve is in a failure state.3. The apparatus of claim 1 , wherein the oil pressure detecting means is an oil pressure switch which is switched at a time of detecting oil pressure to generate a pressure detection signal.4. A method of diagnosing a failure of a piston cooling jet of an engine claim 1 , comprising:Selectively opening and closing a solenoid valve in order to supply oil to an oil line for a piston ...

PISTON

A ferrous piston for gasoline powered engines having dimensions which achieve reduced mass and improved performance is provided. The piston crown has a thickness of less than 4 mm and includes valve pockets with an axial clearance between the valve pockets and an uppermost ring groove of less than 1.5 mm. The pin bosses have an axial thickness of less than 3.7% of a bore diameter, which is the largest outer diameter of the piston, measured between a pin bore and the crown at 1 mm from an inner face forming the pin bore. Each pin boss has a radial thickness of less than 3% of the bore diameter measured between the pin bore and a lower end of the pin boss. An undercrown surface presents a projected area of less than 45% of a total piston bore area, wherein the total piston bore area is πBD/4, BD being the bore diameter. 1. A piston , comprising:a piston body and piston crown formed of a ferrous material;said piston crown including a crown wall presenting an upper surface for being exposed to combustion gases and an undercrown surface for being exposed to cooling oil during operation, said crown wall having a crown wall thickness extending from said upper surface to said undercrown surface, said crown wall thickness being less than 4 mm;said piston crown including a least one valve pocket formed in said crown wall; andsaid piston crown including a ring belt extending from said upper surface, said ring belt including a plurality of ring grooves, wherein an axial clearance between said valve pocket and an uppermost one of said ring grooves is less than 1.5 mm.2. The piston of claim 1 , wherein said piston body presents a bore diameter being the largest outer diameter of said piston body claim 1 , said ring grooves are spaced from one another by lands claim 1 , said lands include a top land depending from said upper surface and having an axial thickness of less than 3% of said bore diameter claim 1 , and a second land spaced from said top land by one of said ring grooves ...

OIL JET ABNORMALITY DETERMINATION APPARATUS OF INTERNAL COMBUSTION ENGINE AND CONTROL APPARATUS OF INTERNAL COMBUSTION ENGINE

An MBT ignition time and a knock ignition time are acquired from an engine rotation speed and engine load, and an ignition time on a delay angle side, out of these ignition times, is set as the most advance angle ignition time. An ignition time on the delay angle side only by the KCS learning value with respect to the most advance angle ignition time is set as a required ignition time, and when an actual ignition time set by a knock control system exceeds a predetermined amount and is positioned on the delay angle side with respect to the required ignition time, it is determined that abnormality occurs in an oil jet. Fail-safe processing to the effect that the opening degrees of a throttle valve are corrected to a closed side is executed in response to the abnormality determination. 1. An oil jet abnormality determination apparatus of an internal combustion engine that is configured to perform an oil jet that lowers an in-cylinder temperature and perform an ignition time control in which an ignition time of a sparking plug is delayed when knocking occurs ,wherein when a delay angle amount of the ignition time of the sparking plug exceeds a predetermined determination threshold value, the oil jet abnormality determination apparatus is configured to determine that an abnormal state occurs where an oil jet amount runs short.2. The oil jet abnormality determination apparatus according to claim 1 ,wherein it is configured to compare an actual ignition time with a required ignition time, which is delayed only by a KCS learning value that is learned in such a manner as to correct the knocking during occurrence of the knocking, with respect to a basic ignition time of the sparking plug, which is set based on an operational state of the internal combustion engine, and when a deviation of the actual ignition time to a delay angle side with respect to the required ignition time exceeds a predetermined amount it is configured to determine that the abnormal state where the oil ...

ADAPTER FOR ROLLER TAPPET OF ENGINE AND ENGINE ROLLER TAPPET ASSEMBLY INCLUDING SAME

An adapter for a roller tappet of an engine may include a body and a support. The body may be combined with a cylinder block of the engine. The body may include oil inlet connected to main gallery of the cylinder block to receive an oil from the main gallery. The support may be extended from one end of the body to support the roller tappet. The support may include a first oil passageway connected to the oil inlet. The first oil passageway is formed through the body and the support to supply the oil supplied from the oil inlet to the roller tappet. Thus, the oil may be supplied from the main gallery to the roller tappet through the oil passageway so that it may not be required to form an additional oil passageway, which may supply the oil to the roller tappet, in the cylinder block. 1. An adapter for a roller tappet of an engine , the adapter comprising:a body combined with a cylinder block of the engine, the body including an oil inlet connected to a main gallery of the cylinder block to receive an oil from the main gallery; anda support extended from one end of the body to support the roller tappet, the support including a first oil passageway connected to the oil inlet,wherein the first oil passageway is formed through the body and the support to supply the oil introduced into the oil inlet to the roller tappet.2. The adapter of claim 1 , wherein the body further comprises a threaded portion threadedly combined with the cylinder block.3. The adapter of claim 2 , wherein the body further comprises a bolt for threadedly combining the threaded portion with the cylinder block.4. The adapter of claim 1 , wherein the body further comprises a second oil passageway extended from the oil inlet toward the other end of the body and connected to a piston cooling jet.5. A roller tappet assembly of an engine claim 1 , the roller tappet assembly comprising:a roller housing configured to support a tappet rod movably arranged in a cylinder block of the engine along a vertical ...

PISTON COOLING JET ASSEMBLY

A piston cooling jet includes a first body and a second body. The first body includes a housing having an inlet fluidly coupled with nozzle outlets. The second body is coupled to the first body to form an interior chamber disposed inside the first body and the second body. The interior chamber is fluidly coupled with the inlet and the nozzle outlets. The interior chamber directs fluid received via the inlet through the nozzle outlets and out of the piston cooling jet assembly in a direction towards a spray target. 1. A piston cooling jet assembly , comprising:a first body, the first body comprising a housing having an inlet fluidly coupled with nozzle outlets; anda second body coupled to the first body to form an interior chamber disposed inside the first body and the second body, wherein the interior chamber is fluidly coupled with the inlet and the nozzle outlets, wherein the interior chamber is configured to direct fluid received via the inlet through the nozzle outlets and out of the piston cooling jet assembly in a direction towards a spray target.2. The piston cooling jet assembly of claim 1 , wherein the first body and the second body are formed of one or more plastics.3. The piston cooling jet assembly of claim 1 , wherein the housing claim 1 , the inlet claim 1 , and the nozzle outlets of the first body are configured to be integrally formed as a unitary component.4. The piston cooling jet assembly of claim 1 , further comprising a valve chamber claim 1 , wherein valve chamber is configured to receive a valve claim 1 , wherein the valve is configured to control one or more of an amount of pressure at which the fluid is directed into the inlet or an amount of pressure at which the fluid is directed out of the nozzle outlets.5. The piston cooling jet assembly of claim 4 , wherein the valve includes a spring and a check ball claim 4 , wherein the spring and the check ball are configured to be displaced by the fluid received via the inlet.6. The piston cooling ...

FLUID COMPRESSOR AND METHOD OF OPERATING A FLUID COMPRESSOR TO REDUCE OIL CARRYOVER BY A COMPRESSOR PISTON ASSEMBLY

A compressor comprises a first compressor piston assembly including a first compressor piston head having a bottom side and a longitudinal central axis. The compressor also comprises a first nozzle arranged to direct a first oil stream towards the bottom side of the first compressor piston head to cool the piston assembly. The compressor further comprises a second nozzle arranged to direct a second oil stream towards the bottom side of the first compressor piston head to cool the piston assembly. Each of the oil streams is substantially parallel to each other and to the longitudinal central axis to provide a flow of oil to cool the piston assembly and to reduce an oil carryover by the first compressor piston assembly by up to about fifty percent as compared to a compressor having no nozzles directing oil streams towards the bottom side of the first compressor piston head. 1. An air brake system twin-cylinder fluid compressor comprising:a first compressor piston assembly including a first compressor piston head having a bottom side and a longitudinal central axis;a second compressor piston assembly including a second compressor piston head having a bottom side and a longitudinal central axis;a bottom compressor body plate defining a first nozzle, a second nozzle, a third nozzle, and a fourth nozzle;the first nozzle arranged to direct a first oil stream towards the bottom side of the first compressor piston head to cool the first compressor piston assembly; andthe second nozzle arranged to direct a second oil stream towards the bottom side of the first compressor piston head to cool the first compressor piston assembly, wherein each of the first and second oil streams is substantially parallel to each other and to the longitudinal central axis of the first compressor piston head;the third nozzle arranged to direct a third oil stream towards the bottom side of the second compressor piston head to cool the second compressor piston assembly; andthe fourth nozzle arranged ...

SYSTEMS AND METHODS FOR CONTROLLING PISTON COOLING NOZZLES USING CONTROL VALVE ACTUATOR

A control system () used for an engine () having at least one cylinder () is provided for a piston cooling nozzle (PCN ()). Included in the control system () are a main liquid rifle () configured to deliver a liquid to the at least one cylinder () of the engine (), and a PCN liquid rifle () disposed inside the main liquid rifle () for directing the liquid from the main liquid rifle () to the PCN (). The control system () causes the liquid to be jetted into the at least one cylinder () of the engine () for lowering a temperature of the engine (). 1101418. A control system () used for an engine () having at least one cylinder () , comprising:{'b': '12', 'a piston cooling nozzle (PCN ());'}{'b': 20', '18', '14, 'a main liquid rifle () configured to deliver a liquid to the at least one cylinder () of the engine (); and'}{'b': 22', '20', '20', '12', '18', '14', '14, 'a PCN liquid rifle () disposed inside the main liquid rifle () for directing the liquid from the main liquid rifle () to the PCN (), causing the liquid delivered to the at least one cylinder () of the engine () to lower a temperature of the engine ().'}210123722. The control system () of claim 1 , further comprising a central control unit configured to control operation of the PCN () using a control valve actuator (CVA ()) fluidly connected to the PCN liquid rifle ().31022212337. The control system () of claim 2 , wherein the PCN liquid rifle () has a first end () that is sealed and an opposite second end () that is fluidly connected to the CVA ().410303714. The control system () of claim 2 , wherein the central control unit (CCU ()) is configured to control open and close operation of the CVA () based on at least one engine () attribute.510141418. The control system () of claim 4 , wherein the at least one engine () attribute includes at least one of: an engine speed claim 4 , a temperature associated with the engine () claim 4 , and a fuel amount injected into the at least one cylinder ().61014. The ...

PISTONS AND PISTON ASSEMBLIES FOR INTERNAL COMBUSTION ENGINES

Pistons and piston assemblies for an internal combustion engine is provided. The piston assembly includes a piston coupled to a connecting rod with a piston pin. The piston pin includes a non-circular outer cross-sectional shape. 1. A piston pin for coupling a connecting rod to a piston , the piston pin comprising:a cylindrical piston pin body including a first surface configured to be engaged to the connecting rod with the body positioned in the piston to couple the connecting rod to the piston, the body extending along a longitudinal axis that is transverse to the connecting rod, the body including an outer surface extending around the longitudinal axis from the first surface, the outer surface having a non-circular shape around the longitudinal axis.2. The piston pin of claim 1 , wherein the outer surface includes:a first portion opposite the first surface, the first portion forming a circular shape around the longitudinal axis; anda second portion defined by a non-circular shape around the longitudinal axis.3. The piston pin of claim 2 , wherein the outer surface includes:a third portion opposite the second portion, the third portion defined by a non-circular shape around the longitudinal axis.4. The piston pin of claim 3 , wherein the first portion connects the second portion and the third portion.5. The piston pin of claim 3 , wherein the second portion and the third portion are elliptical in shape.6. The piston pin of claim 1 , wherein the body includes a second surface opposite the first surface and the outer non-circular shape forms at least one lobe located between first surface and the second surface.7. A piston assembly for an internal combustion engine claim 1 , the piston assembly comprising:a piston that is movable along a cylinder bore of the internal combustion engine, the piston including an upper portion and a lower portion, the upper portion of the piston including a crown facing the cylinder bore; anda piston pin extending along a longitudinal ...

Lubricator for internal combustion engine

Oil jet for cylinder

본 발명은 실린더라이너의 상측에 온도센서를 형성하고, 제어부에서 검출된 실린더라이너의 온도에 따라서 오일제트의 플런저를 작동하여 엔진상황에 맞도록 윤활유를 피스톤에 분사하도록 하는 실린더 냉각을 위한 오일제트구조에 관한 것으로, The present invention forms an oil sensor on the upper side of the cylinder liner, and operates an oil jet plunger in accordance with the temperature of the cylinder liner detected by the control unit so that the oil jet structure for cooling the cylinder to inject lubricating oil to the piston according to the engine situation. Regarding, 오일펌프에서 오일갤러리로 공급된 오일을 피스톤으로 분사하도록 하는 오일제트에 있어서, In the oil jet to inject the oil supplied from the oil pump to the oil gallery to the piston, 상기한 피스톤의 왕복운동을 가이드하는 실린더라이너의 상부에 형성되는 온도센서와; A temperature sensor formed on an upper portion of the cylinder liner for reciprocating the piston; 상기한 온도센서에 검출된 온도와 미리 설정된 값과 비교하여 오일의 분사량을 조절하도록 제어하는 제어부와; A control unit for controlling the injection amount of oil by comparing the temperature detected by the temperature sensor with a preset value; 상기한 제어부의 제어에 의해 솔레노이드가 동작하고, 솔레노이드의 작동에 따라 플런저의 이동범위가 단계적으로 변하므로서 상기한 제어부에서 제어된 오일의 분사량을 피스톤의 하부로 분사하는 오일제트; 로 구성되는 것을 특징으로 하며, An oil jet which injects the injection amount of oil controlled by the control unit as the solenoid is operated by the control of the control unit, and the movement range of the plunger is gradually changed according to the operation of the solenoid; Characterized in that consists of, 상기한 오일제트는 상부측으로 오일갤러리와 연결되는 유입구가 형성되고 피스톤측 방향으로는 노즐이 형성되는 하우징과, 상기 하우징 내부공간에 전자석과 스프링으로 구성되는 솔레노이드와, 솔레노이드의 작동에 의해 하우징 내부공간에서 전후진된 위치에 따라 오일공급량이 가변되도록 오일통로가 형성된 플런저로 구성되는 것을 특징으로 한다. The oil jet has a housing having an inlet connected to an oil gallery at an upper side thereof and a nozzle formed at a piston side thereof, a solenoid composed of an electromagnet and a spring in the inner space of the housing, and an inner space of the housing by the operation of the solenoid. It characterized in that the oil passage is formed with a plunger so that the oil supply amount is variable according to the position forward and ...

A thermal type flow sensing system for sensing amount of piston cooling oil of diesel engine for a ship

PURPOSE: A thermal type flow sensing system for sensing amount of piston cooling oil of diesel engine for a ship is provided to facilitate the application of space by using a flexible printed circuit board. CONSTITUTION: A thermal type flow sensing system for sensing amount of piston cooling oil of diesel engine for a ship comprises a body part and a sensor. The body part is combined in the lower side of the collecting duct. The sensor comprises a first protrusion(130) and a second protrusion(140) projected from the front side of the body part. The sensor exposes to piston cooling oil.

Piston cooling device for internal combustion engine

Cylinder oil supply system

피스톤의 오일 링에 리저버를 형성함으로서 엔진의 초기시동시 오일 펌프에서 펌핑된 오일이 도달되기 전에 실린더 벽에 오일을 비산시켜 오일 막을 형성함으로서 엔진의 초기 마모를 방지하여 엔진의 내구성을 향상시킬 수 있도록 하는 엔진의 초기시동시 실린더 벽의 오일 공급 구조를 제공하는 것으로, 피스톤(50)에 형성된 제 1링홈(60)과 제 2링홈(62) 및 제 3링홈(64)을 통해 제 1압축 링(80)과 제 2압축 링(82) 및 오일 링(84)이 차례로 설치되는 것에 있어서, 상기 오일 링(84)의 상부 테두리에 오일이 머물 수 있는 리저버(10)를 형성하고, 상기 제 2압축 링(82)의 저면 테두리에 리저버(10)에 있는 오일이 실린더 벽(90) 쪽으로의 비산을 유도할 수 있는 로브(20)를 형성하여 구성한 것을 특징으로 한다. By forming the reservoir in the oil ring of the piston, the oil can be splashed on the cylinder wall before the pumped oil arrives at the engine start-up to form an oil film to prevent the engine's initial wear and improve the durability of the engine. To provide the oil supply structure of the cylinder wall at the initial start of the engine, the first compression ring (60) through the first ring groove 60, the second ring groove 62 and the third ring groove (64) formed in the piston ( 80, the second compression ring 82 and the oil ring 84, in order to be installed, to form a reservoir (10) in which the oil can stay on the upper edge of the oil ring 84, the second compression The bottom edge of the ring 82 is characterized by the formation of a lobe 20 in which oil in the reservoir 10 can induce scattering towards the cylinder wall 90.

Car engine start work cylinder apparatus

본 발명은 자동차의 엔진에 관한 것으로, 특히 자동차의 엔진시동시에 실린더블록 및 피스톤의 윤활작용을 원활하게 하고 엔진폭발로부터 실린더를 보호하기 위한 자동차의 엔지시동시 실린더벽면 보호장치에 관한 것이다. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an engine of a motor vehicle, and more particularly, to a cylinder wall surface protection device for engine start of a vehicle for smoothly lubricating a cylinder block and a piston during engine start and protecting a cylinder from an engine explosion. 즉, 시동스위치(10)의 온상태를 감지하여 제어신호를 출력하는 엔진제어부(12)와, 상기 엔진제어부(12)의 제어신호로 스위칭되는 스위칭수단(14)과, 상기 스위칭수단(14)의 스위칭으로 상태가 전환되는 솔레노이드(18)와, 상기 솔레노이드(18)의 작동으로 소정의 각도로 회전되는 실린더오일밸브(20)와, 엔진오일이 고인 엔진오일팬(22)으로부터 엔진오일을 펌핑하는 오일펌프(24)와, 상기 오일펌프(24)로부터 공급된 엔진오일을 저장하는 오일저장탱크(26)와, 실린더블록(1)의 벽면상단일측에 상기 실린더오일밸브(20)와 밀착되어 구성된 실린더오일분무라인(28)과, 상기 실린더오일밸브(20)의 회전상태를 복귀시키는 복귀수단(30)으로 구성하여 실린더벽면을 엔진오일로 코팅시켜 엔진의 수명을 연장시킨 것이다. That is, the engine control unit 12 which detects the on state of the start switch 10 and outputs a control signal, the switching means 14 switched by the control signal of the engine control unit 12, and the switching means 14 The engine oil is pumped from the solenoid 18 in which the state is switched by switching of the cylinder, the cylinder oil valve 20 rotated at a predetermined angle by the operation of the solenoid 18, and the engine oil fan 22 in which the engine oil is accumulated. The oil pump 24, the oil storage tank 26 for storing the engine oil supplied from the oil pump 24, and the cylinder oil valve 20 in close contact with the one side on the wall surface of the cylinder block (1) The cylinder oil spray line 28 and the return means 30 for returning the rotation state of the cylinder oil valve 20 are coated to coat the cylinder wall with engine oil to extend the life of the engine.

Piston for an internal combustion engine

Die vorliegende Erfindung betrifft einen Kolben (10, 110, 210, 310, 410) für einen Verbrennungsmotor, mit einem Kolbenkopf (11) und einem Kolbenschaft (21), wobei der Kolbenkopf (11) einen Kolbenboden (12), einen umlaufenden Feuersteg (14), eine umlaufende Ringpartie (15) mit Ringnuten (16, 17, 18) und im Bereich der Ringpartie (15) einen umlaufenden, nach unten offenen, mit einem Verschlusselement (35, 135, 235, 335, 435) verschlossenen Kühlkanal (19, 119, 419) aufweist, wobei der Kühlkanal (19, 119, 419) einen Kühlkanalboden (26, 126, 226, 326, 426) und eine Kühlkanaldecke (27) aufweist, und wobei der Kolbenschaft (21) zwei Kolbennaben (22) aufweist, die über zwei Laufflächen (25a, 25b) miteinander verbunden sind. Erfindungsgemäß ist vorgesehen, dass die Innenfläche (37) ausschließlich einer Lauffläche (25a) des Kolbens (10, 110, 210, 310, 410) über einen Verbindungssteg (38) mit der Unterseite (11a) des Kolbenkopfes (11) verbunden ist. The present invention relates to a piston (10, 110, 210, 310, 410) for an internal combustion engine, having a piston head (11) and a piston shaft (21), wherein the piston head (11) has a piston crown (12), a circumferential land ( 14), a circumferential ring section (15) with annular grooves (16, 17, 18) and in the region of the ring section (15) a circumferential, downwardly open, with a closure element (35, 135, 235, 335, 435) closed cooling channel ( 19, 119, 419), wherein the cooling channel (19, 119, 419) has a cooling channel bottom (26, 126, 226, 326, 426) and a cooling channel cover (27), and wherein the piston shaft (21) has two piston hubs (22 ), which are interconnected via two running surfaces (25a, 25b). According to the invention, it is provided in that the inner surface (37) of only one running face (25a) of the piston (10, 110, 210, 310, 410) is connected via a connecting web (38) to the underside (11a) of the piston head (11).

Piston for an internal combustion engine

A piston for an internal combustion engine may include a piston head and a piston skirt. The piston head may include a piston crown, a circumferential fire land, a circumferential ring belt having a plurality of ring grooves, and a circumferential cooling duct. The cooling duct may be open in a direction away from the fire land and may be at least partially closed by a closure element. The cooling duct may include a cooling duct bottom and a cooling duct ceiling. The piston skirt may have at least two piston bosses connected to one another via at least two running faces. At least one running face may have an inner face connected via a connecting land to an underside of the piston head.

Device for atomizing oil onto piston

Изобретение относитс  к двигателестроению , может быть использовано в двигател х внутреннего сгорани  и позвол ет повысить эффективность устр-ва. Последнее содержит форсунку, сообщенную с масл ной магистралью, держатель 1 форсунки и запорный элемент. Элемент выполнен в виде подпружиненного клапана и седла и снабжен щелевым фильтром 4, размещенным на выходе масла из держател  и св занным с клапаном через его пружину 8. Фильтр 4 преп тствует засорению форсунки, причем дл  фиксировани  положени  и функции обоих этих элементов достаточна одна лишь пружина , размещенна  между ними. 1 ил. ш (Л ьо со от о 00

Cylinder of internal-combustion engine

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Diagnostic method, diagnostic device, controller and motor vehicle for a piston cooling nozzle valve

本发明一种用于机动车的内燃机的油压系统的活塞冷却喷嘴阀(KKD阀)的诊断方法，所述方法包括：当满足多个触发条件时，操控(21；58)活塞冷却喷嘴阀(10；43)，以便获取油压诊断数据，其中，所述多个触发条件包括：存在内燃机的稳定运行；存在预先确定的运行范围；存在处于预先确定的油温范围内的油温；排除用于惯常地冷却活塞的对活塞冷却喷嘴阀的计划的操控；和排除油压系统的错误；所述诊断方法还包括：确定(22)油压测量点是否处于预定的油压测量点范围内。本发明还涉及一种诊断装置、一种控制器和一种机动车，其分别适合用于或设置用于实施按照本发明的方法。

Metering system

FIELD: mechanical engineering; heavy engines. SUBSTANCE: invention can be used in lubricating systems of ship diesel engines. Proposed metering system has feed pipe and return pipe, each being furnished with valve and connected with central feed pump. System contains injection units connected with said pipes. Each unit contains injection nozzle designed for injection of atomized oil for lubricating the cylinders into corresponding cylinder, piston arranged in rear part of nozzle rod, and controlled motor connected with piston by screw to provide control of piston delivery stroke. Moreover, system contains central computer designed to control valves and motor which provides accurate control of amount of oil and adjustment of timing. EFFECT: provision of control of amount of fed oil and timing. 8 cl, 3 dwg ÐÎÑÑÈÉÑÊÀß ÔÅÄÅÐÀÖÈß (19) RU (11) 2 280 769 (13) C2 (51) ÌÏÊ F01M 1/08 (2006.01) ÔÅÄÅÐÀËÜÍÀß ÑËÓÆÁÀ ÏÎ ÈÍÒÅËËÅÊÒÓÀËÜÍÎÉ ÑÎÁÑÒÂÅÍÍÎÑÒÈ, ÏÀÒÅÍÒÀÌ È ÒÎÂÀÐÍÛÌ ÇÍÀÊÀÌ (12) ÎÏÈÑÀÍÈÅ ÈÇÎÁÐÅÒÅÍÈß Ê ÏÀÒÅÍÒÓ (21), (22) Çà âêà: 2003112011/06, 24.10.2001 (72) Àâòîð(û): ËÀÓÐÈÒÑÅÍ Ñâåí (DK) (24) Äàòà íà÷àëà îòñ÷åòà ñðîêà äåéñòâè ïàòåíòà: 24.10.2001 (73) Ïàòåíòîîáëàäàòåëü(è): ÕÀÍÑ ÅÍÑÅÍ ËÓÁÐÈÊÀÒÎÐÑ À/Ñ (DK) R U (30) Êîíâåíöèîííûé ïðèîðèòåò: 24.10.2000 DK PA 200001584 (43) Äàòà ïóáëèêàöèè çà âêè: 10.12.2004 (45) Îïóáëèêîâàíî: 27.07.2006 Áþë. ¹ 21 2 2 8 0 7 6 9 (56) Ñïèñîê äîêóìåíòîâ, öèòèðîâàííûõ â îò÷åòå î ïîèñêå: WO 92/20909 A1, 26.11.1992. CH 673506 A5, 15.03.1990. GB 2445738 À, 19.07.2000. SU 1295014 A1, 07.03.1987. SU 1790687 A3, 23.01.1993. RU 13079 U1, 20.03.2000. (85) Äàòà ïåðåâîäà çà âêè PCT íà íàöèîíàëüíóþ ôàçó: 26.05.2003 2 2 8 0 7 6 9 R U (87) Ïóáëèêàöè PCT: WO 02/35068 (02.05.2002) C 2 C 2 (86) Çà âêà PCT: DK 01/00702 (24.10.2001) Àäðåñ äë ïåðåïèñêè: 191036, Ñàíêò-Ïåòåðáóðã, à/ 24, "ÍÅÂÈÍÏÀÒ", ïàò.ïîâ. À.Â.Ïîëèêàðïîâó (54) ÄÎÇÈÐÓÞÙÀß ÑÈÑÒÅÌÀ (57) Ðåôåðàò: Èçîáðåòåíèå îòíîñèòñ ê äâèãàòåëåñòðîåíèþ è ìîæåò áûòü èñïîëüçîâàíî â ñìàçî÷íûõ ñèñòåìàõ áîëüøèõ äâèãàòåëåé, ...

Two-stroke engine mixing device

FIELD: mechanical engineering. SUBSTANCE: invention relates to mechanical engineering, in particular to internal combustion engines, and specifically to fuel systems for two-stroke engines. Proposed is a device for mixing a two-stroke engine, said device comprising a cylinder 1 with inlet and outlet windows, and a piston 2, which is connected to the engine shaft by means of a motion conversion mechanism, intake ducts 5, 6 for the intake of air into the substrate space and exhaust duct 7 for the discharge of exhaust gases from the engine. A fuel injector 8 is mounted in the cylindrical part of the substrate volume in such a way that the jet 9 of the fuel has the possibility of entering the bottom of the piston 2 from the bottom at any position thereof within the operating stroke and having the ability to remove part of the heat from the piston in order to increase the homogenization of the mixture, wherein the possibility of preparing the cycloidal portion of the fuel air mixture supply is realized within the limits of the cylindrical piston volume, and the cylinder working volume is purged with a portion of clean air that fills the channels 5 outside the cylindrical substrate volume followed by a portion of fuel air mixture filling the cylindrical subsurface volume. EFFECT: proposed device makes it possible to increase the reliability and quality of the process for mixing a two-stroke engine without significantly increasing the complexity of the structure, to eliminate fuel losses in the exhaust system and to increase the degree of homogenization of fuel air mixture and enhance its cooling effect; by cooling the bottom of the piston with the fuel in the most heated zone (on the side of the exhaust window), the probability of the piston being heated is reduced if the heat balance in the engine is disturbed, and the lower temperature of the piston’s fire surface has a favourable effect on the efficiency of the working process, including the ability to work with a ...

Internal combustion engine

FIELD: engines and pumps.SUBSTANCE: invention relates to an internal combustion engine with a multi-link piston crank mechanism. Oil nozzle (45) is provided for each cylinder in the lower part of cylinder block (5). Oil nozzle (45) has first injection nozzle (46) that injects the lubricating oil towards the rear side of piston (2) during the opening of pressure control valve (51A), and second injection nozzle (47) which injects the lubricating oil towards the connecting portion between lower connecting rod (7) and the control connecting rod (9) during the opening of pressure control valve (51B). By this configuration, a lubricating oil can be continuously supplied to the connecting portion between lower connecting rod (7) and control connecting rod (9).EFFECT: technical result is an increase in the volume of lubricating oil supplied to the sliding piece between the second connecting pin and the control connecting rod.6 cl, 6 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (51) МПК F01M 1/08 F02B 75/04 F02B 75/32 F02D 15/02 (11) (13) 2 662 847 C1 (2006.01) (2006.01) (2006.01) (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК F01M 1/08 (2018.05); F01M 9/108 (2018.05); F01P 3/08 (2018.05); F02B 75/045 (2018.05); F02D 15/02 (2018.05) (21)(22) Заявка: 2017110460, 17.09.2014 17.09.2014 (73) Патентообладатель(и): НИССАН МОТОР КО., ЛТД. (JP) Дата регистрации: 31.07.2018 2339827 C2, 27.11.2008. JP 2013011206 A, 17.01.2013. WO 2007085736 A1, 02.08.2007. JP 2000240421 A, 05.09.2000. (45) Опубликовано: 31.07.2018 Бюл. № 22 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 17.04.2017 (86) Заявка PCT: 2 6 6 2 8 4 7 R U (87) Публикация заявки PCT: WO 2016/042605 (24.03.2016) C 1 C 1 JP 2014/074463 (17.09.2014) 2 6 6 2 8 4 7 (56) Список документов, цитированных в отчете о поиске: RU 2101511 C1, 10.01.1998. RU Приоритет(ы): (22) Дата подачи заявки: 17.09.2014 R U (24) Дата начала отсчета срока действия патента: (72) Автор(ы): ...

A supply flow control of oil jet for a piston cooling

본 발명의 목적은 오일온도 및 엔진 운전 조건에 따라 오일제트로 공급되는 유량을 조절하여 피스톤 냉각온도의 최적화를 도모한 피스톤 냉각을 위한 오일제트용의 공급유량조절장치를 제공하는데 있다. SUMMARY OF THE INVENTION It is an object of the present invention to provide a supply flow regulating device for oil jets for cooling a piston by adjusting the flow rate of oil supplied to the oil jets according to the oil temperature and engine operating conditions. 상기한 목적을 달성하기 위해 본 발명은 In order to achieve the above object, 피스톤의 냉각을 위해 오일제트로부터 분사되는 오일량의 공급을 조절하는 공급유량조절장치에 있어서, A supply flow regulating device for regulating the supply of an amount of oil injected from an oil jet for cooling of a piston, 오일의 유출입구(3)(4)와 밸브시트(5)를 갖는 케이스(6)와; A case 6 having an oil outlet port 3 (4) and a valve seat 5; 상기 밸브시트(5)로부터 밀착 또는 이격되므로써 유로를 개폐하는 피스톤밸브(7)와; A piston valve (7) for opening or closing the passage by being in contact with or spaced from the valve seat (5); 온도에 반응하여 팽창 및 수축하므로써 상기 피스톤밸브(7)를 작동하는 왁스체(9)와; A wax body (9) for operating said piston valve (7) by expanding and contracting in response to temperature; 상기 왁스체(9)를 가열하기 위한 히터(11)와; A heater 11 for heating the wax body 9; 엔진 회전수 정보에 비례하여 상기 히터(11)의 가열정도를 제어하는 전자제어장치(2)와; 를 포함하여 구성되는 것을 요지로 하고 있다. An electronic control unit (2) for controlling the degree of heating of the heater (11) in proportion to information on the number of revolutions of the engine; The present invention relates to an image forming apparatus.

Method of controlling piston cooling device of lubrication oil injection type in internal- combustion engine

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

METHOD AND DEVICE FOR REGULATING OIL PRESSURE USING CONTROLLED PISTON COOLING NOZZLES

РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2017 128 315 A (51) МПК F02D 1/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2017128315, 08.08.2017 (71) Заявитель(и): Форд Глобал Текнолоджиз, ЛЛК (US) Приоритет(ы): (30) Конвенционный приоритет: (72) Автор(ы): ДЕМОТС, Энтони Бернард (GB) 24.08.2016 GB 1614465.1 04 Адрес для переписки: 197101, Санкт-Петербург, а/я 128, "АРСПАТЕНТ", М.В. Хмара Стр.: 1 A 2 0 1 7 1 2 8 3 1 5 R U A (57) Формула изобретения 1. Способ регулирования давления масла в двигательном блоке, причем двигательный блок содержит: масляный насос, выполненный с возможностью подачи масла в масляную систему двигательного блока; форсунку охлаждения поршня, выполненную с возможностью направления струи масла из масляной системы к поршню двигателя; и электронный регулирующий клапан, выполненный с возможностью регулирования потока масла к форсунке охлаждения поршня, причем способ включает в себя следующие этапы: эксплуатируют регулирующий клапан с целью получения расхода масла выше порогового расхода к форсунке охлаждения поршня, когда двигательный блок работает в режиме с выходной мощностью выше порогового значения или частотой вращения двигателя выше порогового значения; и регулируют давление масла в масляной системе, когда двигательный блок работает в режиме с выходной мощностью ниже порогового значения или частотой вращения двигателя ниже порогового значения, посредством работы регулирующего клапана. 2. Способ по п. 1, в котором регулирующий клапан эксплуатируют с целью получения расхода масла ниже порогового расхода к форсунке охлаждения поршня при регулировании давления в масляной системе. 3. Способ по п. 1 или 2, в котором масляный насос представляет собой нерегулируемый масляный насос, выполненный так, чтобы изменять давление масла, обеспечиваемое масляным насосом, в зависимости от частоты вращения двигателя. 4. Способ по любому из предшествующих пунктов, в котором регулирующий клапан представляет ...

A piston cooling device of an engine

본 고안은 엔진의 피스톤 냉각장치에 관한 것으로서, 실린더 블록 하부의 오일 제트에서 분사되는 오일로 피스톤을 냉각하도록 된 엔진에 있어서, 상기 오일 제트로 제공되는 오일의 통로에 설치된 솔레노이드 밸브와, 엔진의 크랭크 각을 감지하는 크랭크각 감지수단과, 상기 크랭크각 감지수단의 신호를 분석하여 피스톤이 하사점 근처에 있을 때만 오일 제트로 오일이 공급될 수 있도록 상기 솔레노이드 밸브를 제어하는 분사시기 제어수단으로 구성된 엔진의 피스톤 냉각 장치를 제공함으로써, 피스톤은 하사점 근처를 이동하는 동안 제공되는 오일에 의해 필요한 냉각이 이루어지며, 오일 제트에서는 피스톤이 상사점으로 이동하여 분사되는 오일이 피스톤의 냉각에 유용하게 사용되지 못하는 시간동안은 솔레노이드 밸브에 의해 오일의 공급이 차단되어 불필요한 오일압의 손실을 방지하게되어, 과도하게 큰 용량의 오일 펌프를 구동하지 않아도 되므로 엔진의 동력성능이 향상되며, 엔진의 각 부위를 윤활하기 위한 충분한 오일압의 안정된 확보로 엔진 윤활작용의 신뢰성을 향상시킬 수 있는 효과가 있다. The present invention relates to a piston cooling device of an engine, comprising: a solenoid valve installed in an oil passage provided by an oil jet, and an engine crank, in an engine configured to cool a piston by oil injected from an oil jet below a cylinder block. An engine composed of crank angle detecting means for detecting an angle and injection timing control means for analyzing the signal of the crank angle detecting means and controlling the solenoid valve so that oil can be supplied to the oil jet only when the piston is near the bottom dead center. By providing a piston cooling device, the required cooling is achieved by the oil provided while the piston moves near the bottom dead center, and in the oil jet, the piston is moved to the top dead center so that the oil injected is not useful for cooling the piston. During this time, the supply of oil is reduced by the solenoid valve. However, it prevents the loss of unnecessary oil pressure, and it is not necessary to drive an excessively large oil pump, thereby improving the power performance of the engine and lubricating the engine by securing a sufficient oil pressure to lubricate each part of the engine. There is an effect that can improve the reliability of.

LUBRICATION SYSTEM FOR THE INTERNAL COMBUSTION ENGINE AND METHOD FOR LUBRICATING THE ENGINE

1. Смазочная система для двигателя (1) внутреннего сгорания, имеющая смазочный контур (6), радиатор (11) для охлаждения смазочного материала, аккумулятор тепла (15), который установлен выше по потоку двигателя (1) для разогрева смазочного материала, причем аккумулятор тепла (15) соединен с радиатором (11) параллельно и клапаном (13) для переключения смазочного контура (6) между радиатором (11) и аккумулятором тепла (15).2. Смазочная система по п.1, в которой смазочным материалом является масло.3. Смазочная система по п.1, в которой насос (9) расположен в смазочном контуре (6) для доставки смазочного материала.4. Смазочная система по п.1, в которой аккумулятор тепла (15) представляет собой химический аккумулятор тепла.5. Смазочная система по п.1, в которой смазочный контур (6) в нормальном режиме проходит через радиатор (11), а в режиме разогрева проходит через аккумулятор тепла (15).6. Смазочная система по п.5, в которой аккумулятор тепла (15) расположен в смазочном контуре (6) таким образом, что аккумулятор тепла (15) может заряжаться за счет смазочного материала в нормальном режиме.7. Смазочная система по п.6, в которой охлаждающая способность радиатора (11) является по существу равной зарядной емкости аккумулятора тепла (15).8. Смазочная система по п.1, в которой аккумулятор тепла (15) установлен выше по потоку двигателя (1) вблизи него.9. Двигатель внутреннего сгорания (1), содержащий смазочную систему по одному из пп.1-8.10. Способ смазки двигателя внутреннего сгорания (1), содержащего смазочный контур (6), включающий в себя:- циркулирование в режиме разогрева смазочного материала вдоль аккумулятора тепла (15);- переключение смазочного контура (6) в нормальный режим; РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (51) МПК F01M 9/00 (13) 2012 109 586 A (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2012109586/06, 14.03.2012 (71) Заявитель(и): Форд Глобал Технолоджис, ЛЛК (US) Приоритет(ы): (30) Конвенционный ...

Cooling system for engine cylinder

엔진실린더를 냉각하는 냉각시스템에서, 밸브이동기구를 구동하는 캠체인이 수용된 캠체인실이 엔진실린더의 한측에 형성되고 냉각핀이 실린더의 다른측에 형성된다. 오일펌프에 연결된 오일통로는 캠체인실의 외부벽 부분에 형성되어 오일통로를 통하여 윤활유가 실린더의 외부벽 부분으로 분사된다. In a cooling system for cooling the engine cylinder, a cam chain chamber containing a cam chain for driving the valve moving mechanism is formed on one side of the engine cylinder and a cooling fin is formed on the other side of the cylinder. The oil passage connected to the oil pump is formed in the outer wall portion of the cam chain chamber so that the lubricant is injected into the outer wall portion of the cylinder through the oil passage.

Piston cooling jet

The present invention relates to a piston cooling jet including a body selectively opening and closing an oil passage and a nipple injecting oil supplied from the body to a piston. The nipple includes: a nipple inlet through which the oil supplied from the body is received; a nipple injection port injecting the oil to the piston; and a nipple passage guiding the oil received through the nipple inlet to the nipple injection port. A diameter of the nipple injection port is formed at a preset size. A filter member filtering foreign substances from the oil is formed in the nipple inlet. According to this, the piston cooling jet is capable of preventing the nipple from being clogged by the foreign substances and improving injection properties of the nipple.

Cooling system for piston

본 고안은 실린더 블록의 연소실에 장착되는 피스톤에 관한 것으로 특히 피스톤의 냉각장치에 관한 것으로 이에 본 고안은 실린더 블록의 연소실 주변으로 오일통로를 형성하여 피스톤의 몸체로 오일이 비산될 수 있도록 하므로서 냉각 및 윤활에 따라 열적부하를 저감시키는데 본 고안의 목적이 있다. The present invention relates to a piston mounted in a combustion chamber of a cylinder block, and more particularly, to a cooling device of a piston. The present invention forms an oil passage around a combustion chamber of a cylinder block so that oil can be scattered to the body of the piston, thereby cooling and An object of the present invention is to reduce the thermal load according to lubrication. 상기한 목적을 달성하기 위한 수단으로 본 고안은, 오일에 의해 냉각되도록 하는 피스톤의 냉각장치에 있어서, 실린더 블록(1)에 형성되는 오일통로(3)와, 상기 오일통로(3)로 공급되는 오일압에 따라 스프링(5)에 의해 탄력적으로 상하 이동하는 플런저(4)와 및 상기 오일통로(3)를 통과한 오일이 피스톤(2)의 스커트부(8)에 비산되도록 형성되는 오일 구멍(6)의 구성을 특징으로 한다. As a means for achieving the above object, the present invention, in the cooling device of the piston to be cooled by the oil, the oil passage (3) formed in the cylinder block (1) and is supplied to the oil passage (3) Plunger 4 which moves up and down elastically by spring 5 according to the oil pressure, and an oil hole formed so that oil passing through the oil passage 3 is scattered to the skirt portion 8 of the piston 2 ( It is characterized by the configuration of 6).

Lubrication system for an internal combustion engine and method of lubrication

Ein Schmierungssystem (5) für einen Verbrennungsmotor (1) umfaßt einen Schmiermittelkreislauf (6), einen Kühler (11) zum Kühlen des Schmiermittels, einen stromaufwärts des Motors (1) angeordneten Wärmespeicher (15) zum Aufwärmen des Schmiermittels, der parallel zu dem Kühler (11) geschaltet ist, undreislaufs (6) zwischen Kühler (11) und Wärmespeicher (15). A lubrication system (5) for an internal combustion engine (1) comprises a lubricant circuit (6), a cooler (11) for cooling the lubricant, a heat accumulator (15) arranged upstream of the engine (1) for warming up the lubricant, which is parallel to the cooler (11) is connected, undreislaufs (6) between cooler (11) and heat storage (15).

Coolable trunk piston for internal combustion engines

In a piston in which the skirt (2) is pivotably connected to the piston upper part (1) by way of the piston pin and in which the piston upper part (1) is to be simultaneously cooled, both radially inside and outside an annular support (5) on the head, by cooling oil sprayed on from the crank chamber, a cooling oil supply feasible with simple design means is sought. In order to solve this problem, secondary ducts (10, 11), branching off from the same point, are provided in the upper area of the piston skirt (2). Each of the two secondary ducts leads into one of the head areas to be cooled. Both secondary ducts (10, 11) are supplied by a jet of cooling oil from a nozzle (8), which, at the junction of the two ducts (10, 11), is divided into these. In order to prevent a divergence of the cooling oil jet between nozzle (8) and inlet into the secondary ducts (10, 11), an oil collecting duct (9) of restricted circumference, aligned parallel to the piston axis, is situated in front of the secondary ducts (10, 11) towards the end of the piston skirt. <IMAGE>

Piston cooling system

AXIAL FLUID SPRAY WITH CLAPPER EVENT

L'invention concerne un Gicleur comprenant : - un corps (20) comprenant un conduit (21), - un siège (30) disposé au niveau de la première extrémité (21a), et comprend une lumière (31) formant une entrée (22a), - un guide (40) comprenant une chemise (50) tubulaire et un organe de maintien (60), l'organe de maintien (60) maintenant la chemise (50) dans le conduit (21), - un obturateur (70) monté en coulissement axial dans le canal (51) de la chemise (50), l'obturateur (70) étant repoussé contre la lumière (31) par un ressort (80), et en butée contre le fond (53) de la chemise (50), le guide (40) comprenant un évent radial (90), qui comprend un canal d'évent (91) isolé de l'écoulement de fluide et reliant l'intérieur de la chemise (50) de guidage, à un perçage (92) formé dans le corps de gicleur (20). The invention relates to a nozzle comprising: - a body (20) comprising a conduit (21), - a seat (30) disposed at the first end (21a), and comprises a light (31) forming an inlet (22a). a guide (40) comprising a tubular jacket (50) and a holding member (60), the holding member (60) holding the jacket (50) in the conduit (21), - a shutter (70), ) mounted in axial sliding in the channel (51) of the jacket (50), the shutter (70) being pushed against the light (31) by a spring (80), and abutting against the bottom (53) of the sleeve (50), the guide (40) including a radial vent (90), which includes a vent channel (91) isolated from the fluid flow and connecting the interior of the guide jacket (50) to a bore (92) formed in the nozzle body (20).

DEVICE FOR SUPPLYING LUBRICATING OIL TO THE CYLINDER FUR OF AN INTERNAL COMBUSTION ENGINE

Dispositif pour l'amenée d'huile lubrifiante à la fourrure de cylindre d'un moteur à combustion interne, comportant au moins un perçage de sortie qui traverse la fourrure et un raccord tubulaire qui traverse le bloc-cylindre, est alimenté par un système d'alimentation en huile lubrifiante et amène de l'huile lubrifiante au perçage de sortie. Dans la paroi extérieure de la fourrure de cylindre 1 sont prévus des évidements en forme de gorge 16, 18, 19, 20 destinés à recevoir, entre les perçages de sortie 23, 24 et le raccord 9, 28 un système de tuyaux distributeurs d'huile lubrifiante 11, 12, 13, 14, 15; 25, 26, 27, 29, 30 logé à l'intérieur de la surface extérieure 17 de l'enveloppe de la fourrure. Application aux moteurs à combustion interne. Device for supplying lubricating oil to the cylinder liner of an internal combustion engine, comprising at least one outlet bore which passes through the liner and a tubular connector which passes through the cylinder block, is supplied by a system of lubricating oil supply and supplying lubricating oil to the outlet bore. In the outer wall of the cylinder sleeve 1 are provided groove-shaped recesses 16, 18, 19, 20 intended to receive, between the outlet holes 23, 24 and the connector 9, 28 a system of distributing pipes of lubricating oil 11, 12, 13, 14, 15; 25, 26, 27, 29, 30 housed inside the outer surface 17 of the shell of the fur. Application to internal combustion engines.

DEVICE FOR CONTROLLING THE SUPPLY OF A SYSTEM WITH A FLUID

Système de refroidissement de pistons de moteur à combustion interne comportant une pompe à huile entraînée par le moteur, des gicleurs d'huile sur les pistons, et un dispositif de commande (2) interposé entre la pompe à huile et les gicleurs, le dispositif de commande comportant un clapet (14) disposé entre un conduit d'arrivée (8) d'huile connecté à la pompe à huile sous pression et un conduit d'alimentation (10) des gicleurs, ledit clapet (14) permettant l'écoulement de l'huile de la pompe aux gicleurs lorsque la pression de l'huile est au moins égale à une pression seuil, le dispositif comportant également une électrovanne (22) apte à provoquer la fermeture du clapet (14) en autorisant la mise en contact de l'huile sous pression avec l'obturateur (16), dans un sens de fermeture du clapet (14). An internal combustion engine piston cooling system comprising an engine-driven oil pump, oil nozzles on the pistons, and a control device (2) interposed between the oil pump and the nozzles, the control device (2) interposed between the oil pump and the nozzles, the control device (2) control comprising a valve (14) disposed between an oil inlet duct (8) connected to the pressurized oil pump and a supply duct (10) of the nozzles, said valve (14) allowing the flow of the pump oil to the nozzles when the pressure of the oil is at least equal to a threshold pressure, the device also comprising a solenoid valve (22) capable of causing the closure of the valve (14) allowing the contacting of the pressurized oil with the shutter (16), in a closing direction of the valve (14).