КОМПОНЕНТ СИСТЕМЫ ОТВОДА ВЫХЛОПНЫХ ГАЗОВ ДЛЯ ДВИГАТЕЛЯ ВНУТРЕННЕГО СГОРАНИЯ И СПОСОБ ИЗГОТОВЛЕНИЯ КОМПОНЕНТА СИСТЕМЫ ОТВОДА ВЫХЛОПНЫХ ГАЗОВ

Изобретение может быть использовано в двигателях внутреннего сгорания. Компонент системы отвода выхлопных газов для двигателя внутреннего сгорания содержит множество взаимно соединенных элементов (1) системы отвода выхлопных газов, через которые протекают выхлопные газы двигателя внутреннего сгорания. Элементы (1) системы отвода выхлопных газов опираются на первую раму (2) и на вторую раму (4). Вторая рама (4) расположена на расстоянии от первой рамы (2). Соединительные распорки (5) прочно соединяют рамы (2), (4) между собой. Каждая из соединительных распорок (5) образует опорную поверхность, на которой расположена рубашка, образующая периферийную стенку. Раскрыты варианты компонента системы отвода выхлопных газов для двигателя внутреннего сгорания и варианты способа изготовления компонента системы отвода выхлопных газов. Технический результат заключается в защите элементов системы отвода выхлопных газов от поворота нежелательным образом. 6 н. и 12 з.п. ф-лы, 6 ил.

СИСТЕМА ДОЗИРОВКИ ВЫХЛОПНОЙ ПРИСАДКИ, СОДЕРЖАЩАЯ ТУРБОНАГНЕТАТЕЛЬ

Изобретение относится к системе дозировки выхлопной присадки для выхлопной системы двигателя внутреннего сгорания, оснащенного турбонагнетателем. Турбонагнетатель содержит турбину (6). Турбина (6) содержит корпус (12) турбины и диффузор (60). Корпус (12) турбины содержит выпускной объем (16) для выхлопного газа, и диффузор (60) размещается в этом объеме. Отверстие (11) корпуса и отверстие (61) диффузора размещаются сквозь каждый из корпуса (12) турбины и диффузора (60), соответственно, и взаимно выравниваются, чтобы предоставлять отверстие внутрь выпускного объема (16) для выхлопного газа. Турбонагнетатель (5) дополнительно содержит втулку (63). Втулка (63) размещается в отверстии (11) корпуса, проходит в направлении отверстия (61) диффузора и заканчивается на первом конце (63a) в ассоциации с отверстием (61) диффузора. Первый конец (63a) втулки имеет внутренний диаметр, который больше или равен диаметру отверстия (61) диффузора. Через втулку (63) проходит дозирующая трубка (32) подачи ...

Double wall exhaust pipe for vehicle engine - has sealed cavity filled with insulating and cooling material

The double wall exhaust gas pipe is for a vehicle IC engine having a catalytic converter. There is a gap between the inner wall and the outer wall of the pipe containing a material which acts as a thermal insulator at low temp. and exerts a cooling effect at high temp. The gap is a closed cavity filled with a material (4) which can be a semiconductor, an inorganic salt, a glassy substance or a plastics, the melting point of which is around 500 deg. C. USE/ADVANTAGE - Compact exhaust gas system for vehicle engine which always exhibits a good insulating and cooling effect.

Manufacture of exhaust gas purification unit containing e.g. catalyst and comprising cylindrical section with double end cone transitions

The process manufactures an exhaust gas purification unit, e.g. a casing for an exhaust catalyst. The cylindrical casing holds the gas purification element (1) in an intervening mounting mat (2), and has conical transitions (4) at either end. The sheet blank (7) of the casing is wrapped around the element. Here it is clamped, to hold the built-in components (1, 2, 3) fixed. In this position it (7) is closed to a shell, especially by welding. The new feature concerns cone attachment. During clamping, ends of the transition cones project into the shell, such that they form support regions or formers (6). These limit clamping of the casing. Also claimed is the corresponding assembly.

Hitzeschildsystem und -verfahren

Connector for e.g. pipes, of different diameter comprises corrugated pipe whose end faces are sealed by bending ends of wall inwards

The connector for components, e.g. pipes (19, 20), of different diameter comprises a corrugated pipe (1). The end faces of this are sealed by bending the ends (23) of the wall inwards.

Device for hydrolytic production of ammonia in silicon-controlled rectifier-exhaust system for internal combustion engine, has exhaust gas pipe for conducting exhaust gas flow to silicon-controlled rectifier-catalyzer

The device (10) has an exhaust gas pipe (12) for conducting an exhaust gas flow to a silicon-controlled rectifier-catalyzer, and an injection unit (20) for injecting a hydrous urea solution in a hydrolysis section of the exhaust gas pipe. The hydrolysis section of the exhaust gas pipe is formed for part as double-walled pipe (36) with an inner wall and an outer wall.

Exhaust pipe

The invention relates to an exhaust manifold for motor vehicle engines, in which the inner pipe, of flexible design at least in certain sections, is supported on an outer pipe, thermally insulated by the said inner pipe and designed to be rigid at least in the axial direction. As a result, thermally induced distortion effects and changes in length are eliminated or reduced.

Verfahren zur Herstellung eines Rohres aus Metall mit unterschiedlichen Wandstärken

Dargestellt und beschrieben ist ein Verfahren (1) zur Herstellung eines Rohres (2) aus Metall mit einem im Wesentlichen kreisrunden Querschnitt und mit wenigstens zwei in axialer Richtung des Rohres (2) hintereinanderliegenden Abschnitten (3a, 3b) mit unterschiedlichen Wandstärken. Das vorgestellte Verfahren (1) zeichnet sich dadurch aus, dass ein Außenrohr (4) und ein Innenrohr (5) bereitgestellt (100) werden, wobei der Außendurchmesser des Innenrohres (5) kleiner ist als der Innendurchmesser des Außenrohres (4), dass das Innenrohr (5) an eine Sollposition in das Außenrohr (4) eingebracht (110) wird, dass wenigstens das Innenrohr (5) oder das Außenrohr (4) im kraftfreien Zustand eine solche Formabweichung vom idealen kreisrunden Querschnitt aufweist, dass das Innenrohr (5) in dem Außenrohr (4) an seiner Sollposition durch Kraftschluss gehalten (120) wird, dass das Außenrohr (4) zumindest an der Stelle der Sollposition des Innenrohres (5) durch äußere Krafteinwirkung durchmesserreduziert ...

Uncoupling element for exhaust system which purifies and discharges exhaust of I.C. engine

The uncoupling element (1) comprises a connectable intermediate tube (8) joined at one end with the inner tube (4) of the air-gap pipe (2), and at its other end with a pipe (3) which leads to the catalyser.The intermediate tube is formed from the extension of the inner tube and is made in one-piece with the inner tube. The end (9) of the intermediate tube projects in the pipe which leads to the catalyser, and is longitudinally slidable in the pipe by means of a wire-cushion support (12).

Schalldämpferbaugruppe

Eine Schalldämpferbaugruppe für eine Abgasanlage einer Brennkraftmaschine, insbesondere in einem Fahrzeug umfasst einen Schalldämpfer (42) mit einem entlang einer Gehäuselängsachse langgestreckten Schalldämpfergehäuse (10) und eine das Schalldämpfergehäuse (10) umkleidende Gehäusehülle (40), wobei an der Gehäusehülle (40) wenigstens eine Luftleitausformung (34) vorgesehen ist.

Anordnung eines Abgasrohres und einer Integraldämmung für das Abgasrohr

Die Erfindung betrifft eine Anordnung eines Abgasrohrs (1) und einer Integraldämmung (2) für das Abgasrohr (1), wobei die Integraldämmung (2) das Abgasrohr (1) ummantelt.Bei einer solchen Anordnung ist vorgesehen, dass die Integraldämmung (2) außen eine erste Schale (3) und außen eine zweite Schale (4) sowie Dämmmaterial aufweist, wobei die Schalen (3, 4) einander überlappend angeordnet sind, und zwischen den Schalen (3, 4) und dem Abgasrohr (1) das Dämmmaterial angeordnet ist, sowie die Integraldämmung (2) beidseitig außerhalb der Überlappung der beiden Schalen (3, 4) mit dem Abgasrohr (1) verbunden und dort in Längserstreckungsrichtung (6) des Abgasrohrs (1) festgelegt ist.Bei einer derartigen Ausbildung der Anordnung kann eine mechanische Beanspruchung der Integraldämmung infolge der Wärmedehnung des Abgasrohrs (1) vermieden werden.

Verfahren und Vorrichtung für Thermomanagement einer Kfz-Abgasanlage

Verfahren für ein Thermomanagement in einer Abgasanlage (1) für ein Kraftfahrzeug mit Verbrennungsmotor (2), welche Abgasanlage ein Entkoppelelement (5', 5") mit einem flexiblen Leitungselement (5a) in Form eines Balgs und mit wenigstens einer in dem flexiblen Leitungselement (5a) angeordneten Innenkomponente (5d) in Form eines Wickelschlauchs zum Leiten eines von dem Verbrennungsmotor (2) stammenden Abgasstroms (P2) aufweist, wobei der Abgasstrom (P2) durch die Innenkomponente (5d) geleitet wird, dadurch gekennzeichnet, dass zwecks Erwärmung des Abgasstroms (P2) ein vorgewärmtes gasförmiges Medium getrennt von dem Abgasstrom (P2) außerhalb der Innenkomponente (5d) über einen Zwischenraum (5e) zwischen dem flexiblen Leitungselement (5a) und der Innenkomponente (5d) durch das Entkoppelelement (5', 5") geleitet wird.

Flanged connection for connection of double-walled component to single-component, has double-wall component, which has outer component and inner components, third component, annular support flange and annular counter flange

The flanged connection has a double-wall component, which has an outer component and inner components, third component, an annular support flange (11) and an annular counter flange (23). The support flange is fixed rigidly to the outer component. The inner component is guided to a radial inner side of the support flange.

Rohr zur Abgasführung von Verbrennungsmotoren für Kfz

EXHAUST PIPE FOR AN INTERNAL COMBUSTION ENGINE

Finisher component and assembly incorporating same

A finisher component 32 having spaced apart inner 34 and outer 36 peripheral parts interconnected by a flexible connecting web 38 formed integrally therewith, which allows relative movement of the peripheral parts and reduction of their spacing under compression. A connection arrangement 18 where the inner and outer peripheral parts are located respectively between a first pair 22, 24 and a second pair 28, 30 of spaced abutments provided on respective mounting members is also claimed, as is an assembly of a tubular component 12 and a surrounding tubular sleeve 16 via a connection arrangement where each of the pairs of abutments is associated with one of the tube and sleeve. According to a second aspect, the invention relates to a finisher component having a connecting web of convoluted shape and to an assembly of tube and outer sleeve employing this finisher component. The finisher component preferably has low thermal conductivity and an S-, Z- or Σ-shaped cross section. It may be made of ceramic composite, ceramic or a combination of metallic and ceramic materials. Preferred application is in engine exhausts, the finisher component sealing the heat insulation between an exhaust pipe and a surrounding sleeve while avoiding thermal bridging.

Mounting interface for exhaust gas treatment assembly

An exhaust gas treatment assembly (1, fig 1) comprises a housing (10) which is radially inwardly deformed to a first surface level S1 in a clamping region 13 to retain a block 30 through which exhaust gas flows. The block may be a filter or catalyst. The clamping region has a protuberance 16 extending radially outwardly to a second surface level S2 and supporting an external mounting surface 61 for mounting the assembly in a mounting connector (70, fig 3). The protuberance may comprise annular ribs. The mounting connector may be welded to a mounting band 60 extending around the housing. The first surface level S1 may vary to accommodate the dimensions of individual blocks while the second surface level S2 is fixed so that the mounting surface 61 can fit in a mounting assembly (80, fig 14) with standardised dimensions.

DEVICE AND PROCEDURE FOR THE CLEANING OF AN EXHAUST GAS STREAM OF AN INTERNAL-COMBUSTION ENGINE, IN PARTICULAR AN LEAN-EXECUTABLE INTERNAL-COMBUSTION ENGINE

ISOLATION DEVICE FOR, IN PARTICULAR OF being called MEDIUM FLOW THROUGH-CASH MECHANICAL COMPONENT

EXHAUST ELBOW UNION

Fahrzeug

The invention relates to a vehicle having a drive unit (1) which has an internal combustion engine (2), wherein the internal combustion engine (2) has an exhaust-gas turbocharger (5) with an exhaust-gas turbine (5a) in the outlet system and a charge-air compressor (5b) in the inlet system (3), having at least one thermal power unit (30) for recovering heat from a heat-emitting component or a heat-emitting assembly, wherein the component or the assembly adjoins at least one chamber (6) through which a working gas flows, having a first compressor (9) and having a first turbine (10), wherein a first outlet side (9b) of the first compressor (9) is connected in terms of flow to an inlet region (7) of the chamber (6), and a second outlet side (9c) of a second compressor (9'), which is driven by the first turbine (10), or a second outlet side (9d) of the first compressor (9) is connected in terms of flow to the inlet system (3), and wherein the heat-emitting component or the heat-emitting assembly ...

ABGASSCHALLDÄMPFERANORDNUNG

The invention relates to an exhaust gas muffler arrangement (1) for an internal combustion engine, in particular a generator, comprising a pre-muffler (VSD) and a post-muffler (NSD). In order to achieve a compact design with a high sound-damping capability, the pre-muffler (VSD) and the post-muffler (NSD) are arranged in a common housing (2), said pre-muffler (VSD) lying in a first chamber (3) and the post-muffler (NSD) lying in a second chamber (4) of the housing (2). The two chambers (3, 4) are fluidically connected to each other by means of at least one fluid connection in a partition (9).

INSULATING MATERIAL MAT

EXHAUST MANIFOLD CONNECTING CONSTRUCTION WITH AIR GAP

AIR GAP-ISOLATED EXAMINED EXIT GAS LINE FOR INTERNAL-COMBUSTION ENGINES

HEAT INSULATION OF EXHAUST PIPE OF INTERNAL COMBUSTION ENGINE

INSULATED EXHAUST PIPE AND METHOD AND MEANS FOR PRODUCING AND CONNECTING SAME

CATALYTIC CONVERTER WITH MOUNTING DEVICE FOR A HOT EXHAUST GAS OXYGEN SENSOR

A catalytic converter (Fig. 1) having a housing (12) holding upstream and downstream catalytic material (14,16) carrying substrates or bricks includes a ring (40) located between the substrates (14,16), the ring (40)having a gap therein for receipt of a mid-bed oxygen sensor (via 20). The ring (40) traps a layer of insulating material (42) between the ring (40) and the converter housing (12) or shell surface surrounding the inter-substrate gap. The ring (40) is coupled to the housing (12) at a plurality of embossments 44) either by welding or mechanical couplings.

AIR GAP PIPE AND METHOD OF FABRICATION

An air gap pipe and a method for forming the same are provided. The air gap pipe includes a non-linear outer pipe and an inner pipe of identical configuration disposed concentrically within the outer pipe. The inner pipe is supported by resilient dimples in the outer pipe. The outer pipe is placed in a condition for receiving the inner pipe by longitudinally cutting the outer pipe in half with a pre-programmed plasma arc or laser cutting apparatus. The two halves of the outer pipe are secured together to provide vents, if necessary, for selective dissipation of heat.

RAINPROOF EXHAUST PIPE

A vertical exhaust pipe having an inner pipe with an upper opening. An outer pipe is positioned around the inner pipe and has an end portion that extends beyond the upper opening in the inner pipe, said end portion defining an outlet through which exhaust gas exits the outer pipe. A mechanism is coupled with the inner pipe for blocking rain that has entered the outer pipe from falling through the opening in the inner pipe. A ledge mechanism is positioned beneath the upper opening in the inner pipe and between the inner and outer pipes for forming a chamber within which is held rainwater that has entered the outer pipe. A drainage mechanism allows rainwater in the chamber to pass to the exterior of the outer pipe.

Engine design for pollution reduction - has exhaust duct surrounded by jacket of stagnant hot exhaust gas

The exhaust passage (21) of the cylinder head (12) of the engine (10) is provided with an inner duct (24) which surrounds the stem (16) of the exhaust valve (18). The outer end of the duct (24) is clamped against the cylinder head (12) by the exhaust manifold (32) so that there is an annular gap between duct (24) and exhaust passage (21). This gap is open to the exhaust gases passing through the valve so that a jacket of hot stagnant gas surrounds the duct (24). This jacket of hot gas ensures complete combustion of any unburnt hydro-carbons before they are discharged to the atmosphere. In an alternative design the duct (24) is provided with an additional jacket of thermally insulating material.

COMBUSTION ENGINE.

Exhaust component cover

Exhaust treatment device with integral mount

Heat-insulating, durable and reflective wrap-around sleeve and construction method thereof

SYSTEM Of EXHAUST HAS CONVERTER CATALYTIC FOR MOTOR VEHICLE

TUBE SODA HAS DOUBLE WALL AND ITS MANUFACTORING PROCESS

CONDUIT Of EXHAUST

EXHAUST MEMBER FOR INTERNAL COMBUSTION ENGINE

DOUBLE-WALLED EXHAUST VOLUME AND METHOD OF MAKING SAME

A HEAT SHIELD ASSEMBLY FOR A VEHICLE EXHAUST ANALYZER MODULE AND COMPONENT OF EXHAUST SYSTEM OF A MOTOR VEHICLE

DEVICE OF REHEATING OF EXHAUST FUMES Of an ENGINE, EXHAUST MANIFOLD AND LINE Of EXHAUST ADAPT, AND CONVEYS COMPRISING THEM.

Dispositif de réchauffage des gaz d'échappement d'un moteur (1), comportant au moins un réacteur thermochimique (10, 11, 12, 13) renfermant un composé (15) susceptible d'absorber un fluide (19) selon une réaction exothermique et de désorber ledit fluide à une température accessible par les gaz d'échappement du moteur (1) lorsque celui-ci est en régime thermique, au moins un réservoir (18) renfermant ledit fluide (19) et pourvu de moyens de chauffage et de refroidissement capables de vaporiser et de condenser ledit fluide (19), une ou des conduites (22, 23, 24, 25, 26) et au moins une vanne (27) faisant communiquer ledit réservoir (18) et le ou lesdits réacteurs (10, 11, 12, 13), caractérisé en ce que le ou lesdits réacteurs (10, 11, 12, 13) sont conçus pour être intégrés à un collecteur d'échappement (2) à double paroi équipant le moteur (1).Collecteur d'échappement (2), et ligne d'échappement (7) adaptés à l'utilisation de ce dispositif, et véhicule les comportant. Device for heating the exhaust gases of an engine (1), comprising at least one thermochemical reactor (10, 11, 12, 13) containing a compound (15) capable of absorbing a fluid (19) according to an exothermic reaction and desorbing said fluid to a temperature accessible by the exhaust gases of the engine (1) when the latter is in a thermal regime, at least one reservoir (18) enclosing said fluid (19) and provided with heating and cooling means cooling means capable of vaporizing and condensing said fluid (19), one or more conduits (22, 23, 24, 25, 26) and at least one valve (27) communicating said reservoir (18) and said one or more reactors (10); , 11, 12, 13), characterized in that the one or more reactors (10, 11, 12, 13) are designed to be integrated with a double-wall exhaust manifold (2) fitted to the engine (1). exhaust (2), and exhaust line (7) adapted to the use of this device, and vehicle co mportant.

VOLUME Of EXHAUST HAS DOUBLE WALL AND MANUFACTORING PROCESS CORRESPONDING

Ce volume (1) d'échappement des gaz de combustion issus d'un moteur (5) de véhicule automobile comprend : - au moins un conduit d'échappement (2) délimité par une paroi (9) comprenant un tronçon terminal (11) ; - au moins une bride (3) comportant une face d'appui (4), la bride délimitant au moins une entrée (6) de gaz d'échappement communiquant avec le conduit d'échappement (2), l'entrée (6) de gaz d'échappement étant délimitée par un canon (10) lié à la bride (3), le canon (10) étant joint au tronçon terminal (11); - au moins un col extérieur (7) joint au tronçon terminal (11). Le tronçon terminal (11) est disposé entre la bride et le col extérieur (7), le tronçon terminal (11) étant percé d'au moins un trou (23) entre la bride (3) et le col extérieur (7), le tronçon terminal (11), la bride (3) et le col extérieur (7) étant solidarisés par l'apport d'un matériau.

Rörenhet i en rörledning för ett gasformigt medium

EXHAUST PIPE

Provided is an exhaust pipe wherein a sufficient noise reduction effect and a prevention effect for reduction of the temperature of an exhaust gas can be obtained even if the exhaust pipe is bent. An exhaust pipe (1) has an inner tube (10) for introducing exhaust gas, and an outer tube (11) fitted on the inner tube (10). Projected portions (12) obtained by radially inwardly projecting several parts of the inner peripheral surface of the outer tube (11) in the circumferential direction, and extending the same in the tube axis direction, are provided on the inner peripheral surface of the outer tube (11). A plurality of air chambers partitioned by the projected portions (12) are formed between the outer peripheral surface of the inner tube (10) and the inner peripheral surface of the outer tube (11), and an intermediate member (15) is provided between the outer peripheral surface of the inner tube (10) and the projected portions (12).

EXHAUST TREATMENT DEVICE WITH INTEGRAL MOUNT

An exhaust treatment device includes an insulation material positioned between an inner shell and an outer shell. An inlet tube has an end in communication with a cavity defined by the inner shell. A substrate for treating engine exhaust is positioned within the inner shell. A metal mounting ring is positioned between the inner and outer shells and includes a mounting provision for receipt of a fastener.

INSULATED EXHAUST MANIFOLD

An exhaust manifold (10) for an internal combustion engine is provided with internal insulation (26) to maintain the outside skin temperature preferably below 450 F (232 C). The manifold (10) is provided with an exhaust conduit or lining (24) comprised of interfitting relatively axially movable sections in contact with the exhaust gases. A low specific gravity or porous sleeve of insulating material (26) is fitted in slightly spaced relationship around the exhaust conduit (24). The sleeve of insulating material (26) may be wrapped to prevent the metal of the outer cast manifold (22) housing from penetrating the insulation. Each section (32, 34, 36) of the exhaust conduit (24) has a branch (46) for connection to a flanged nipple (50) which is permitted some limited movement relative to the manifold housing (22) when connected to the exhaust ports of the engine.

Shielding component, in particular a heat shield

A shielding component, in particular a heat shield, has shield components (10, 12, 14) which are made flat, which lie at least partially on top of one another, and which are connected to one another at least partially along at least one common connecting line (16). Along the common connecting line (16), at least one shield component (14) encompassing another shield component (10, 12) in an overlap (18). Within the overlap (18), the shield components (10, 12, 14) are held at least partially by frictional engagement so as to be displaceable against one another relative to a compensation distance. A rigid connection of the shield components with their individual layers is avoided. Rather, depending on the thermal situation, they can mutually slide off one another.

Air gap manifold port flange connection

An air gap manifold joint construction of an engine exhaust port flange having a plurality of exhaust port orifices, each with an inner orifice wall, a dual wall manifold having a plurality of runners each including an inner tubular liner and an outer tubular jacket, the inner tubular liner being generally spaced from the outer tubular jacket substantially over the length of the inner tubular liner to form an air gap, the inner tubular liner having an inlet end and the outer tubular jacket having an end adjacent to the inner tubular liner inlet end, said inner tubular liner inlet end having a periphery with an outer diameter substantially the same size as the inner diameter of the outer tubular jacket end and in peripheral engagement therewith, an adapter sleeve having first and second ends, the first end having an outer diameter substantially the same size as the diameter of the inner orifice wall of the exhaust port flange port orifice, and the second end having an outer diameter substantially ...

Insulated double-walled exhaust pipe

A double-walled cylinder in the form of an exhaust pipe, muffler, or catalytic converter is provided less heat or sound conductive in its radial direction by filling the annular gap between the inner and outer cylinder with low-density, high-temperature resistant, inorganic spheroids.

Motor-vehicle exhaust-gas cleaning device and method for making same

For the production of a motor vehicle exhaust gas cleaning device, which comprises an essentially cylindrical housing (G), at least one exhaust gas cleaning element (1) mounted in it, with a mounting mat (2) in between, and two transition cones (4) joined with the housing at the ends, a sheet metal cut-out (7) is placed around the at least one exhaust gas cleaning element (1) as a mantle, to form the housing, braced to the built-in parts (1 2, 3) to provide a firm attachment, and, in this position, closed to form a sleeve, while the two transition cones (4) are positioned in such a way, as the mantle formed from the sheet metal cut-out (7) is braced and formed into a sleeve, that they project into the housing (G) with support regions (6) which face the housing in each instance, and act as stops to delimit, the bracing process.

INSULATED DOUBLE-WALLED EXHAUST SYSTEM COMPONENT AND METHOD OF MAKING THE SAME

A double-walled exhaust system component having hollow ceramic microspheres disposed between inner and outer pipes and method of making the same. The hollow ceramic microspheres have a size distribution wherein, on a bulk volume basis, at least 90 percent of the hollow ceramic microsphere have a size of less than 150 micrometers.

Water jet propulsion watercraft

A water jet propulsion watercraft includes a first exhaust pipe that is fixed to an engine and connected to an exhaust port of the engine. A damper section reduces vibrations from the engine. A catalytic converter unit is connected to the first exhaust pipe. The catalytic converter unit is attached to the engine through the damper section. A second exhaust pipe includes a first flexible pipe having a flexible quality and is connected to the catalytic converter unit. A water lock is fixed to a hull of the watercraft and connected to the second exhaust pipe.

DOUBLE-SHELL MANIFOLD

The invention relates to an exhaust manifold (12) consisting of: an outer casing (18) comprising an outer shell (22) and a flange (24) which is welded to the outer shell (22) and which is equipped with a surface (24B) that is supported by an engine head and at least one hole (28) which opens onto said support surface (24A); and at least one internal conduit (20) which is disposed in the outer casing (18) and which terminates in a hole (28). The invention is characterised in that: each internal conduit (20) is formed from a ceramic material; and each internal conduit (20) extends through the flange (24) by means of each hole (28) and comprises an extension (32) that extends outside the outer casing (18) towards the exterior and beyond the support surface (24A).

EXHAUST PIPE FOR MOTORCYCLE

PURPOSE: To maintain a constant gap between an inner and an outer cylinders and prevent the discoloration of plating on the surface of the outer cylinder, by distributing a plurality of gap-maintaining point projections on the outside of the inner cylinder or the inside of the outer cylinder of a double-structured exhaust pipe. CONSTITUTION: An exhaust pipe 10, which is connected to the exhaust passage 4 of an engine E, consists of an outer cylinder 11 whose surface is plated and an inner cylinder 12. A flange 13 on the upper end of the exhaust pipe is coupled to another flange 5 on the exhaust passage 4 to attach the exhaust pipe. A muffler 6 is connected to the lower end of the exhaust pipe. A plurality of point projections 12a are distributed on the entire outside of the inner cylinder 12 to retain a space (g) betweem the inner and the outer cylinders not to reduce the distance between them. Even if the inner cylinder suffers from a very high temperature and is thermally deformed outward ...

DOUBLE EXHAUST PIPE FOR VEHICLE

PURPOSE: To provide a vehicular double exhaust pipe heightening the heat insulating effect of exhaust gas and improving a temperature up characteristic especially at the starting time and moreover capable of positively absorbing thermal expansion difference between an inner pipe and an outer pipe. CONSTITUTION: An inner pipe 104 is held by an inner pipe holding member 103 interposed between the inner pipe 104 and an outer pipe 102, and the end part 102a of the outer pipe 102 is rigidly fixed to a cap 110 held between connecting members such as a flange l09. The cap 110 has a cylindrical part 114 extended onto the inner pipe 104 side, along the flow direction of exhaust gas. Clearances 108, 115 exist between the cap 110 and the end part 104a of the inner pipe 104 which are overlapped by the specified length in the flow direction of exhaust gas. COPYRIGHT: (C)1995,JPO ...

УСТРОЙСТВО ДЛЯ ПОДАЧИ ЖИДКОЙ СРЕДЫ В ВЫХЛОПНЫЕ ГАЗЫ ДВИГАТЕЛЯ ВНУТРЕННЕГО СГОРАНИЯ

FIELD: engines and pumps. SUBSTANCE: proposed device comprises mixing pipe (2), fluid injector (4) to force fluid in the latter and inlet channel (6) arranged upstream of mixing pipe. Inlet channel comprises first and second circular-section sections (14) and (15), second one being arranged downstream the first one to surround the mixing pipe. First section surrounds the second section. Mixing branch pipe comprises flow reversing section (18) to communicate first section circular outlet (16) with second section circular inlet (17). It can reverse exhaust gas flow in inlet channel to make it flow via second section in direction opposite that of exhaust gas flow in first section. EFFECT: efficient distribution of urea solution in exhaust gases to decrease risks of urea solution attack the one and the same wall point at mixing pipe. 10 cl, 2 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 538 984 C2 (51) МПК F01N 3/20 (2006.01) F01N 13/08 (2010.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ 2013121804/06, 07.10.2011 (24) Дата начала отсчета срока действия патента: 07.10.2011 (72) Автор(ы): ЛОМАН, Петер (SE), НОРЛИНГ, Даниель (SE) (73) Патентообладатель(и): СКАНИА СВ АБ (ПАБЛ) (SE) Приоритет(ы): (30) Конвенционный приоритет: (43) Дата публикации заявки: 20.11.2014 Бюл. № 32 R U 14.10.2010 SE 1051073-3 (45) Опубликовано: 10.01.2015 Бюл. № 1 1050670 A2, 08.11.2000. US 2006008397 A1, 12.01.2006. US 6444177 B1, 03.09.2002. US 2010139258 A1, 10.06.2010 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 14.05.2013 2 5 3 8 9 8 4 (56) Список документов, цитированных в отчете о поиске: US 20101212301 A1, 26.08.2010. EP 2 5 3 8 9 8 4 R U SE 2011/051200 (07.10.2011) C 2 C 2 (86) Заявка PCT: (87) Публикация заявки PCT: WO 2012/050509 (19.04.2012) Адрес для переписки: 129090, Москва, ул. Б. Спасская, 25, строение 3, ООО "Юридическая фирма Городисский и Партнеры" (54) УСТРОЙСТВО ДЛЯ ПОДАЧИ ЖИДКОЙ СРЕДЫ В ...

УСТРОЙСТВО ДЛЯ ПОДАЧИ ЖИДКОЙ СРЕДЫ В ВЫХЛОПНЫЕ ГАЗЫ ДВИГАТЕЛЯ ВНУТРЕННЕГО СГОРАНИЯ

... 1. Устройство (1) для введения жидкой среды, например мочевины, в выхлопные газы двигателя внутреннего сгорания, содержащее:- смешивающий патрубок (2) для пропускания сквозь него выхлопных газов,- впрыскивающее средство (4) для впрыска жидкой среды в смешивающий патрубок (2) в центре расположенного выше по потоку конца (3) смешивающего патрубка и- впускной канал (6), расположенный выше по потоку смешивающего патрубка (2), имеет на своем расположенном выше по потоку конце (7) впуск (8) для приема выхлопных газов, а на своем расположенном ниже по потоку конце (10) выпуск (11), открытый в расположенный выше по потоку конец (3) смешивающего патрубка (2) для подачи выхлопных газов в смешивающий патрубок,отличающееся тем, что- впускной канал (6) содержит первую секцию (14) канала, выполненную кольцевой в сечении и имеющую на своем расположенном ниже по потоку конце кольцевой выпуск (16),- впускной канал (6) содержит вторую секцию (15) канала, выполненную кольцевой в сечении, расположенную ниже ...

СИСТЕМА И СПОСОБ ПЕРЕРАБОТКИ ВЫХЛОПОВ ГЕНЕРАТОРНОЙ УСТАНОВКИ

... 1. Устройство переработки выхлопа для использования в морской среде, содержащее внутреннюю трубообразную конструкцию для принятия выхлопных газов из генераторной установки (генератора) и пропускания выхлопных газов через нее, элемент переработки выхлопа, установленный во внутренней трубообразной конструкции для переработки выхлопных газов, внешнюю трубообразную конструкцию, установленную вокруг внутренней трубообразной конструкции для образования промежуточного пространства между ними, по меньшей мере, одно отверстие, через которое подается поток воды в промежуточное пространство для поддержания внешней трубообразной конструкции при температуре ниже температуры элемента переработки выхлопа. 2. Устройство переработки выхлопа по п.1, дополнительно содержащее изоляционную камеру, отделяющую, по меньшей мере, один из катализаторов и внутреннюю трубообразную конструкцию, и внутреннюю трубообразную конструкцию и внешнюю трубообразную конструкцию. 3. Устройство переработки выхлопа по п.2, в котором ...

Двигатель внутреннего сгорания

An exhaust port liner for an internal combustion engine is formed of thin wall heat resistant material and is provided with an entrance opening at one side to receive exhaust gases discharged from an engine combustion chamber. A poppet type valve which closes against a stationary seat has a portion which extends through the entrance opening of the liner and also through an aperture in a wall of the liner. This aperture may also receive a portion of the valve stem guide and the liner may be fixed to the valve stem guide in the region of said aperture. The liner has a discharge opening and a support flange supporting the liner encircles the discharge opening. A peripheral layer of heat insulating material may be provided on the liner and this heat insulating material may be confined within a shell forming a part of the liner.

Vorrichtung und Verfahren zur Reinigung eines Abgasstroms einer Brennkraftmaschine, insbesondere einer magerlauffähigen Brennkraftmaschine

Die Erfindung betrifft eine Vorrichtung und ein Verfahren zur Reinigung eines Abgasstroms einer Brennkraftmaschine, insbesondere einer magerlauffähigen Brennkraftmaschine, mit wenigstens einem in einem Abgasstrang (2) einer Brennkraftmaschine angeordneten SCR-Katalysator (3), wobei sich eine Abgasleitung (8) stromauf des SCR-Katalysators (3) an einer Abzweigstelle (7) in eine Teilstrom-Abgasleitung (9) und in eine Reststrom-Abgasleitung (8') aufzweigt, wobei die Teilstrom-Abgasleitung (9) mit einer Reduktionsmittel-Zudosiervorrichtung (12) zur Zudosierung eines Reduktionsmittels (13) in den in der Teilstrom-Abgasleitung (9) geführten Abgasteilstrom (18) gekoppelt ist, und wobei die Teilstrom-Abgasleitung (9) und die Reststrom-Abgasleitung (8') stromab der Abzweigstelle (7) und stromauf des wenigstens einen SCR-Katalysators (3) an einer Abgasleitung (8'') zusammengeführt sind. Erfindungsgemäß ist die Teilstrom-Abgasleitung (9) thermisch mit einer einen heißen Abgasstrom (16) zu einer Abgasturbine (16) eines Abgasturboladers (4) führenden Turbinenleitung (15) gekoppelt. The invention relates to a device and a method for purifying an exhaust gas stream of an internal combustion engine, in particular a lean-running internal combustion engine, with at least one SCR catalytic converter (3) arranged in an exhaust line (2) of an internal combustion engine, wherein an exhaust gas line (8) upstream of the SCR catalytic converter Catalyst (3) branches off at a branch point (7) in a partial flow exhaust pipe (9) and in a residual flow exhaust pipe (8 '), wherein the partial flow exhaust pipe (9) with a reducing agent metering device (12) for metered addition of a reducing agent (13) is coupled to the exhaust partial flow (18) guided in the partial flow exhaust pipe (9), and wherein the partial flow exhaust pipe (9) and the residual flow exhaust pipe (8 ') are downstream of the branch point (7) and upstream of the at least one SCR catalyst (3) on an ...

Kompakter Inline-Einlass mit integriertem gegossenem Ring

Ein Abgasnachbehandlungssystem für ein Fahrzeug enthält einen zylindrischen Innenmantel, einen zylindrischen Außenmantel, eine innere Endkappe, ein metallisches Befestigungsglied und eine äußere Endkappe. Der Innenmantel ist dazu konfiguriert, Abgas zu führen. Der Außenmantel bildet einen ersten Spalt zu dem Innenmantel. Die innere Endkappe verschließt ein offenes Ende des Außenmantels. Die innere Endkappe enthält eine erste sich axial erstreckende Lippe. Die innere Endkappe ist an dem Innenmantel fixiert. Die äußere Endkappe ist an der inneren Endkappe fixiert. Die äußere Endkappe enthält eine zweite sich axial erstreckende Lippe. Die äußere Endkappe und die innere Endkappe wirken dahingehend zusammen, das Befestigungsglied einzukapseln. Die erste sich axial erstreckende Lippe ist zwischen dem Außenmantel und der zweiten sich axial erstreckenden Lippe angeordnet.

ABGASVORRICHTUNG, INSBES. ABGASREINIGUNGSVORRICHTUNG

Verfahren und Vorrichtung zum Führen eines Abgasstroms eines Verbrennungsmotors mit einem lastabhängigen Wärmeübergangskoeffizienten

Die Erfindung betrifft eine Abgasführung (1) zum Führen eines Abgasstroms (3) eines Verbrennungsmotors (5), mit einem ersten Fluidpfad (7) zum Führen eines ersten Teilstroms (9) des Abgasstroms (3), einem zweiten Fluidpfad (11) zum Führen eines zweiten Teilstroms (13) des Abgasstroms (3), einem dem ersten Fluidpfad (7) vorgeschalteten ersten Auslassventil (15) des Verbrennungsmotors (5), einem dem zweiten Fluidpfad (11) vorgeschalteten zweiten Auslassventil (17) und einer zumindest einem der Fluidpfade (7, 11) vorgeschalteten Steuervorrichtung (19), mittels der zumindest einer der Teilströme (9, 13) des Abgasstroms (3) steuerbar ist. Zum Erzielen eines von einem Betriebszustand (63) des Verbrennungsmotors (5) abhängigen Wärmeübergangskoeffizienten ist vorgesehen, dass der erste Fluidpfad (7) und der zweite Fluidpfad (11) eine gemeinsame Trennwand (21) aufweisen.

COMPOSITE DUAL TUBING

VERFAHREN ZUR HERSTELLUNG EINES HEISSGASFUEHRUNGSBAUTEILS, INSBESONDERE ABGASFUEHRUNGSBAUTEILS FUER VERBRENNUNGSMOTORE.

Rotatable coupling with clamping means and sealing means for an exhaust system

Coupling apparatus

Method and device for manufacturing T-pieces

The invention relates to a method and a device for manufacturing T-pieces from an unbranched starting piece of pipe by means of internal high-pressure forming (IHF). For this purpose, the starting piece of pipe is placed in a two-part forming tool which gives the shape, can be opened and closed, surrounds the starting piece of pipe, and has a cutout corresponding to the desired shape of the T-shaped pipe branch. Placed in a sealing manner against the two open end faces of the inserted starting piece of pipe in each case is a plunger which is movable in the forming tool and can be pushed axially into the forming took in each case by a pressure cylinder. The interior of the starting piece of pipe is filled with pressure fluid by means of an opening in at least one of the plungers, prior to being placed on the plungers in a sealing manner. A fluid high-pressure is built up by pushing the plungers axially into the forming tool with high force and, thus initiated, by pushing pipe wall material ...

Exhaust gas treatment assembly comprising a gas permeable block and a housing, and method of assembly

Mounting interface for exhaust gas treatment assembly

EXHAUST SYSTEMS FOR INTERNAL COMBUSTION ENGINES

... 1526963 Exhaust system for IC engine FUJI HEAVY INDUSTRIES Ltd 21 Nov 1975 [26 Nov 1974 (2)] 47997/75 Heading F1B [Also in Divisions F2 and F4] A heat-insulated exhaust pipe has a duct 1 surrounded by insulation 8 contained within a cover 9, the cover 9 being fixed at one end to the duct 1 e.g. by welding and being slidable with respect to the duct 1 (e.g. having a sliding collar 14) at the other end to accommodate thermal expansion. The duct 1 may be connected to a muffler (not shown) by a flange 17 with two concentric stiffening pipes 15, 16. The cover 9 can be of two half-shells 9a, 9b welded together (see Fig. 3), the upper half 9a having a downward projection 9c or having an edging strip 9d to prevent rainwater entering. The pipe may be attached to a vehicle by a resiliently deformable bracket (not shown).

ANTRIEBSEINHEIT FÜR EIN FAHRZEUG

The invention relates to a vehicle, especially a racing vehicle, having a drive unit (1) comprising an internal combustion engine, and at least one device for air to flow through or around, especially a device (32) which improves output and/or a cooler (16) of a cooling device. In order to improve the flow properties of the vehicle in a simple manner, the at least one device for air to flow through or around is located in the air-intake path (11) and/or the air outlet path (12) of a first compressor (9), preferably at least one device for air to flow through or around being located both in the air intake path (11) and in the air outlet path (12) of the first compressor (9), preferably at least one cooler (16) being located in the air intake path (11) and at least one output-increasing device (32) being located in the air outlet path (12).

DEVICE FOR THE REGULATION OF THE WASTE GAS EMISSION

ABGASSCHALLDÄMPFERANORDNUNG

The invention relates to an exhaust gas muffler arrangement (1) for an internal combustion engine, in particular a generator, comprising a pre-muffler (VSD) and a post-muffler (NSD). In order to achieve a compact design with a high sound-damping capability, the pre-muffler (VSD) and the post-muffler (NSD) are arranged in a common housing (2), said pre-muffler (VSD) lying in a first chamber (3) and the post-muffler (NSD) lying in a second chamber (4) of the housing (2). The two chambers (3, 4) are fluidically connected to each other by means of at least one fluid connection in a partition (9).

PROCEDURE FOR THE PRODUCTION OF A HEISSGASFUEHRUNGSBAUTEILS, IN PARTICULAR EXHAUST SYSTEM CONSTRUCTION UNIT FOR COMBUSTION ENGINES.

Double layered, bent exhaust pipe

An exhaust pathway for an internal combustion engine passes from a larger pipe to a smaller pipe, and then back to a larger pipe. The smaller pipe has a bend of at least approximately 80°, and each of the smaller and downstream larger pipes is disposed within, and spaced apart from, portions of a shell, such that cooling air passes in an air gap between the pipes and the shell.

DOUBLE-WALL WELDED TUBE AND METHOD FOR PRODUCING SAID TUBE

FUEL HEATING EQUIPMENT OF DIESEL ENGINE

Disclosed is a fuel heating equipment of a diesel engine for preheating and heating fuel to supply the fuel to the engine. The fuel heating equipment of the diesel engine includes a main heating part having a collective tank, which is formed between runners connected to a first side of the engine and an exhaust pipe, and is heated by exhaust heat introduced from the runner, and a fuel supply pipe, which extends from a fuel tank and is wound around the collective tank to heat fuel, which passes through the fuel supply pipe due to heat conducted from the collective tank, so as to supply the fuel to the engine. The fuel heating equipment of the diesel engine further includes a preheating part provided such that the fuel supply pipe is inserted along the exhaust pipe to prevent the fuel, which is cooled by cold outside air in the winter season, from being directly introduced to the collective tank.

Exhaust system component

An exhaust system component (5) is provided for an exhaust system (1) of an internal combustion engine, especially of a motor vehicle, with an inner shell (6), which defines an exhaust-gas-guiding inner area (7), with an outer shell (8), which is arranged on an outer side of the inner shell (6) turned away from the inner area (7), with a cavity formed between inner shell (6) and outer shell (8), and with heat insulation (10) arranged in the cavity (9). The heat insulation of the component (5) includes insulation (10) having at least one microporous molding (molded body) (11).

Exhaust gas heat energy recovery device for double-walled line of diesel engine of motor vehicle, has heat exchanger integrally housed between heat shield and exhaust line, and solenoid valve connecting exchanger to heating circuit

L'invention concerne un dispositif de récupération thermique pour une ligne d'échappement avec échangeur de chaleur intégré afin de récupérer l'énergie thermique des gaz d'échappement d'un moteur à combustion interneCe dispositif de récupération thermique est caractérisé en ce que l'échangeur de chaleur (1) est logé intégralement dans l'écran thermique entre celui-ci et la ligne d'échappement (3).Applications dans le domaine automobile.

CASES FOR EXHAUST FUMES CATALYSTS

Exhaust manifold for an internal combustion engine produced using a flexible intermediary layer acting as the core for casting the external envelope and for compensating for distortions during use of the manifold

L'invention concerne un collecteur d'échappement (10) d'un moteur à combustion interne, notamment de véhicule automobile, le collecteur d'échappement (10) comportant au moins un conduit interne (16) d'échappement qui est destiné à guider les gaz d'échappement, une enveloppe rigide externe (18) qui est agencée autour du conduit interne d'échappement (16), et une couche intermédiaire (24) d'isolation thermique qui est interposée entre le conduit interne (16) et l'enveloppe externe (18), l'enveloppe externe (18) étant réalisée par moulage autour de la couche intermédiaire (24) qui forme noyau de moulage, caractérisé en ce que la couche intermédiaire (24) est constituée d'un matériau souple de manière à compenser les compressions et expansions de l'espace compris entre le conduit interne (16) et l'enveloppe externe (18) qui sont dues à la différence de dilatation de l'enveloppe externe (18) par rapport au conduit interne (16). L'invention concerne aussi un procédé de réalisation d'un tel collecteur ...

Hybrid resonator silencer for use in exhaust line of car, has enclosure having exhaust fumes input, thermal insulating layer placed inside enclosure against lateral wall, where layer extends on both sides of internal partition

Le volume d'échappement (11) comprend une enceinte (19) ayant : - une demi-coque (20) en métal; - une demi-coque (21) en matière plastique; - une liaison étanche (23) des parois latérales (23, 33) des demi-coques l'une à l'autre. Le volume d'échappement (11) comprend en outre : - une cloison interne (37), divisant l'enceinte (11) en une chambre chaude (39) et une chambre froide (41); - une couche d'isolant thermique (43) s'étendant au moins de part et d'autre de la cloison interne (37).

METALLURGICAL PROCESS FOR PRODUCING A COMPOSITE OBJECT AND RESULTING PRODUCTS

A.PROCEDE METALLURGIQUE POUR PRODUIRE UN OBJET COMPOSITE ET PRODUITS OBTENUS PAR CE PROCEDE. B.ON FORME UN OBJET COMPOSITE PAR UN PROCEDE DANS LEQUEL UN MOULAGE INTERIEUR EST SEPARE D'UN MOULAGE EXTERIEUR PAR UNE PARTIE ISOLANTE DEFINISSANT LE CONTOUR DE LA SURFACE EXTERIEURE DU MOULAGE INTERIEUR ET CELUI DE LA SURFACE INTERIEUR DU MOULAGE EXTERIEUR. LA PARTIE ISOLANTE EST EMPRISONNEE ENTRE LES DEUX MOULAGES ET CONSTITUE UNE BARRIERE THERMIQUE ENTRE EUX. LES MOULAGES SONT PRODUITS EN VAPORISANT UN MODELE NON REUTILISABLE DONT LE CONTOUR CORRESPOND RESPECTIVEMENT A CELUI DES MOULAGES INTERIEURS ET EXTERIEURS. ON ASSEMBLE LES MODELES EN DISPOSANT ENTRE EUX LA PARTIE ISOLANTE DE L'OBJET ET ON FORME UN MOULE AUTOUR DES MODELES AINSI ASSEMBLES ET DE LA PARTIE ISOLANTE. LORSQU'ON COULE LE METAL EN FUSION DANS LE MOULE, LES MODELES SONT VAPORISES, PERMETTANT AINSI AUX PARTIES INTERIEURE ET EXTERIEURE DE L'OBJET D'ETRE COULEES AUTOUR DE LA PARTIE ISOLANTE EN FORMANT L'OBJET COMPOSITE FINAL VOULU. C.CONCERNE, D'UNE MANIERE GENERALE, LE MOULAGE D'OBJETS METALLIQUES ET NOTAMMENT, DE COLLECTEURS D'ECHAPPEMENT RENFERMANT UNE COUCHE ISOLANTE. A. METALLURGIC PROCESS TO PRODUCE A COMPOSITE OBJECT AND PRODUCTS OBTAINED BY THIS PROCESS. B. A COMPOSITE OBJECT IS SHAPED BY A PROCESS IN WHICH AN INTERIOR MOLDING IS SEPARATED FROM AN EXTERIOR MOLDING BY AN INSULATING PART DEFINING THE CONTOUR OF THE OUTER SURFACE OF THE INTERIOR MOLDING AND THAT OF THE INTERIOR SURFACE OF THE EXTERIOR MOLDING. THE INSULATING PART IS IMPRISONED BETWEEN THE TWO MOLDINGS AND CONSTITUTES A THERMAL BARRIER BETWEEN THEM. THE MOLDINGS ARE PRODUCED BY VAPORIZING A NON-REUSABLE MODEL WHOSE CONTOUR CORRESPONDS RESPECTIVELY TO THAT OF THE INTERIOR AND EXTERIOR MOLDINGS. THE MODELS ARE ASSEMBLED WITH THE INSULATING PART OF THE OBJECT BETWEEN THEM AND A MOLD IS FORMED AROUND THE MODELS THUS ASSEMBLED AND THE INSULATION PART. WHEN THE MOLTEN METAL IS CAST IN THE MOLD, THE MODELS ARE ...

EXHAUST MANIFOLD AND BODY Of EXHAUST COMPRISING SUCH a COLLECTOR.

Un collecteur d'échappement pour un moteur (1) à combustion interne comporte au moins un canal (20), le canal (20) comportant une entrée destinée à être reliée à une sortie d'une chambre de combustion (10) du moteur (1), le canal (20) comportant un conduit interne (22) destiné à conduire directement les gaz d'échappement et une l'enveloppe externe (23) entourant le conduit interne (22). Le conduit interne (22) comporte en outre un bloc catalytique (201) occupant toute la section du conduit interne (22), le conduit comportant au moins un premier soufflet (205) en amont ou un deuxième soufflet (206) en aval de part et d'autre du bloc catalytique (201).

INSULATED DOUBLE-WALLED EXHAUST SYSTEM COMPONENT AND METHOD OF MAKING THE SAME

união de tubo de escape esférica

ANORDNING VID EN FORBRENNINGSMOTORS AVGASKANAL

MUFFLER

A muffler having a shell of a double-layer structure includes an inner shell that is formed by fixing ends of a tubularly rolled plate material to each other through a lock seam, and an outer shell that is formed substantially in the same manner as the inner shell. In this muffler, a through-hole is provided through the inner shell at a position where the inner shell overlaps with a lock seam portion of the outer shell.

EXHAUST GAS PURIFICATION DEVICE

An exhaust gas purification device capable of enhancing handling operability such as maintenance of an engine includes two gas purification bodies which purity exhaust gas discharged from the engine, inner cases in which the gas purification bodies are incorporated, and outer cases in which the inner cases are incorporated. The outer cases are arranged side by side in a moving direction of exhaust gas and connected to each other. One of the adjoining inner cases is inserted into the other inner case to form a double-layer structure. A loosely-fitting gap is formed between an inner side surface of the one inner case and an outer side surface of the other inner case.

Water jet propulsion watercraft

A water jet propulsion watercraft includes a hull having a sealed engine room, an engine installed in the engine room, a jet propulsion unit arranged to be driven by the engine so as to suck in water from around the hull and jet the water, a saddle type seat disposed above the engine room, a first exhaust pipe, an exhaust pipe cooling unit, and a catalyst unit. The first exhaust pipe is attached to a side of the engine inside the engine room, extends rearward from the side of the engine, and is arranged to guide exhaust gas discharged from the engine. The exhaust pipe cooling unit is arranged to cool the first exhaust pipe. The catalyst unit is connected to the first exhaust pipe, is disposed inside the engine room so as to oppose a rear surface of the engine, and is arranged to promote reaction of components contained in the exhaust gas.

EXHAUST EMISSION CONTROL DEVICE

An exhaust emission control device comprises a selective reduction catalyst for reacting NOx in an exhaust gas with ammonia, means for adding a urea water into the exhaust gas upstream of the catalyst and a cylindrical mixing pipe as a connection between the adding means and the catalyst, an entry end of the mixing pipe being formed with circumferential opening sections and provided with guide fins for guiding the exhaust gas to the opening sections tangentially of the entry end to provide a mixer structure, the adding means being arranged centrally on the entry end of the mixing pipe and directed toward an exit end of the mixing pipe for addition of the urea water into a swirling flow of the exhaust gas caused by the mixer structure. The opening sections are formed along the swirling flow.

Double-walled exhaust volume and corresponding manufacturing method

An exhaust volume for combustion gases from a motor vehicle engine comprises at least one exhaust duct delimited by a wall comprising an end segment, and at least one flange having a bearing surface. The flange delimits at least one exhaust gas inlet communicating with the exhaust duct. The exhaust gas inlet is delimited by a cannon connected to the flange, with the cannon being attached to the end segment. At least one outer neck is attached to the end segment. The end segment is arranged between the flange and the outer neck, with the end segment being pierced with at least one hole between the flange and the outer neck. The end segment, the flange, and the outer neck are being secured through the addition of a filler.

EXHAUST DEVICE FOR INTERNAL COMBUSTION ENGINE

An exhaust muffler includes a first muffler section having a tubular member made up of an inner pipe to which an exhaust pipe is connected and an outer pipe covering the inner pipe, and a connector connecting the tubular member and a second muffler section to each other, and the second muffler section having an outer shell, a first partition wall, a second partition wall, and a third partition wall. Exhaust gases delivered from the exhaust pipe are discharged from the first muffler section and the second muffler section out of the exhaust muffler. The second muffler section has a cross-sectional area larger than a cross-sectional area of the tubular member. The exhaust muffler includes a first expansion chamber, a second expansion chamber, and a third expansion chamber. The second muffler section includes a fluid communication pipe extending through the first partition wall and the second partition wall for leading exhaust gases from the first expansion chamber into the second expansion ...

Exhaust manifold

Ein Abgaskrümmer einer Abgasanlage eines Verbrennungsmotors umfasst eine den Abgasstrom führende Schale und einen Eintrittsflansch, der zur Anbindung an eine Komponente des Verbrennungsmotors ausgebildet ist. Die Schale ist an einer zu dem Eintrittsflansch hin weisenden Eintrittsseite vollständig geöffnet und entlang einer Umrandung der Öffnung an dem Eintrittsflansch befestigt.

Insulation mat

Die Erfindung betrifft eine Dämmstoffmatte zur Schall- und/oder Wärmedämmung von Maschinenteilen oder Abgasrohren sowie eine aus diesen Dämmstoffmatten bestehende Vorrichtung zur Schall- und/oder Wärmedämmung.

Muffler assembly with mounting adapter(s) and process of manufacture

A muffler assembly including one or more exhaust pipe(s), one or more mounting adapter(s) attached to the one or more exhaust pipe(s), a polymeric housing carried by one or more mounting adapter(s), a thermal insulating layer lining the housing interior surface and extending between the housing and one or more mounting adapter(s) at the housing-mounting adapter interface(s); wherein the thermal insulating layer includes a nonwoven fabric; wherein when the fabric is exposed to heat, the fabric increases in thickness to seal the muffler assembly at the housing-exhaust pipe interface and provides thermal insulation to the polymeric housing.

Electric heating type catalyst and a method for manufacturing the same

Electricity is suppressed from flowing to a case ( 2 ) of an electric heating type catalyst ( 1 ). The electric heating type catalyst ( 1 ) is provided with a heat generation element ( 4 ) to be electrically energized to generate heat, the case ( 2 ) in which the heat generation element ( 4 ) is received, and a mat ( 3 ) inserted between the heat generation element ( 4 ) and the case ( 2 ) for insulating electricity, wherein the case ( 2 ) is formed into double pipes ( 24 ) at an upstream side and downstream side of the heat generation element ( 4 ), respectively, and an inner pipe ( 28 ) of each of the double pipes ( 24 ) is formed such that it is in contact at an upstream side or downstream side one end ( 25 ) thereof with an outer pipe ( 27 ) of each double pipe ( 24 ), with a gap being formed between the inner pipe ( 28 ) and the outer pipe ( 27 ) of each double pipe ( 24 ) at an upstream side or downstream side other end ( 26 ) of the inner pipe ( 28 ), and an insulating layer ( 6 ) for insulating electricity is provided on a surface of the case ( 2 ) from the mat ( 3 ) to the other end ( 26 ) including a range surrounded by the outer pipe ( 27 ) and the inner pipe ( 28 ) of each double pipe ( 24 ).

Exhaust pipe connecting structure

An exhaust pipe connecting structure includes a first exhaust pipe, a second exhaust pipe, a seal member, and a gasket. The second exhaust pipe is a separate part from the first exhaust pipe. The second exhaust pipe is connected to the first exhaust pipe and defines an exhaust passage together with the first exhaust pipe. The seal member is located between the first exhaust pipe and the second exhaust pipe in a connecting portion where the first exhaust pipe and the second exhaust pipe connect. The gasket is arranged between the seal member and the exhaust passage in the connecting portion where the first exhaust pipe and the second exhaust pipe connect together. The gasket has a heat resistant property.

Exhaust treatment device with integral mount

An exhaust treatment device includes an insulation material positioned between an inner shell and an outer shell. An inlet tube has an end in communication with a cavity defined by the inner shell. A substrate for treating engine exhaust is positioned within the inner shell. A metal mounting ring is positioned between the inner and outer shells and includes a mounting provision for receipt of a fastener.

VEHICLE EXHAUST SYSTEM

A vehicle exhaust system for allowing passage of exhaust gasses therethrough. The vehicle exhaust system has a first pipe having a first end and a second end. The first end defines an exhaust gas inlet and the second end defines an exhaust gas outlet. The vehicle exhaust system also has a second pipe positioned downstream of the first pipe and has a third end and a fourth end. At least a portion of the second end of first pipe is positioned within the third end of the second pipe defining an overlap between the second end of the first pipe and the third end of the second pipe. The first pipe and the second pipe together define a volume for the exhaust gasses. The volume comprises a first volume passageway between the exhaust gas inlet and the exhaust gas outlet and a second volume passageway defined by the overlap of the second pipe and the first pipe and having an inlet for exhaust gasses into the second volume passageway and an outlet from the second volume passageway positioned axially upstream of inlet. The inlet is positioned downstream of the exhaust gas outlet 1. A vehicle exhaust system for allowing passage of exhaust gasses therethrough , the vehicle exhaust system comprising:a first pipe having a first end and a second end; the first end defining an exhaust gas inlet and the second end defining an exhaust gas outlet;a second pipe positioned downstream of the first pipe and having a third end and a fourth end, at least a portion of the second end of first pipe is positioned within the third end of the second pipe defining an overlap between the second end of the first pipe and the third end of the second pipe; a first volume passageway between the exhaust gas inlet and the exhaust gas outlet;', 'a second volume passageway defined by the overlap of the second pipe and the first pipe and having an inlet for exhaust gasses into the second volume passageway and an outlet from the second volume passageway positioned axially upstream of inlet; and', 'wherein the ...

Pipe structure

A pipe structure includes a pipe disposed in a state of contact with the air, a fluid with a temperature of at least 100° C. flowing inside the pipe; and a coating material containing nickel oxide and coated onto an outer periphery portion of the pipe

HEAT INSULATING STRUCTURE FOR INTERNAL COMBUSTION ENGINE

A heat insulating structure of an internal combustion engine (engine ) includes a cylinder-head-side heat insulating cover () and a cylinder-block-side heat insulating cover (). Each of the first side walls () of the cylinder-head-side heat insulating cover () is disposed outwardly of, and is spaced apart from, a corresponding one of the second side walls () of the cylinder-block-side heat insulating cover () in the width direction of the vehicle. The lower edge of each of the first side walls () is positioned below the upper edge of the corresponding one of the second side walls () to overlap with the corresponding one of the second side walls () when viewed from the side of the vehicle. 1. A heat insulating structure of an internal combustion engine which is housed in an engine compartment provided in a front of a vehicle , and closed/opened by a bonnet , and which includes a cylinder block and a cylinder head coupled to a top of the cylinder block , the heat insulating structure comprising: a top wall facing, and spaced apart from, a head top surface of the cylinder head, and covering a whole of the head top surface,', 'first side walls extending in a longitudinal direction of the vehicle, each facing, and spaced apart from, a corresponding one of both side surfaces of the cylinder head in a width direction of the vehicle and a corresponding one of upper portions of both side surfaces of the cylinder block in the width direction of the vehicle, and each covering the corresponding one of the both side surfaces of the cylinder head in the width direction of the vehicle and the corresponding one of the upper portions of the both side surfaces of the cylinder block in the width direction of the vehicle, and', 'releasing portions formed at respective both edges of the cylinder-head-side heat insulating cover in a longitudinal direction of the vehicle; and, 'a cylinder-head-side heat insulating cover having'} a front wall covering a front surface of the cylinder block ...

VEHICLE EXHAUST SYSTEM COMPONENT HAVING AN INSULATING HEAT SHIELD ASSEMBLY WITH ENCAPSULATED POCKETS

An exhaust component assembly includes a heat shield and a mounting structure to attach the heat shield to an outer housing of an exhaust component. The mounting structure includes a primary insulator located between an outer surface of the outer housing and an inner surface of the heat shield, and at least one secondary insulator positioned adjacent the primary insulator. The primary insulator comprises a sheet of material including at least one encapsulated insulating cavity. 1. An exhaust component assembly comprising:a heat shield; anda mounting structure to attach the heat shield to an outer housing of an exhaust component, wherein the mounting structure comprisesa primary insulator located between an outer surface of the outer housing and an inner surface of the heat shield, wherein the primary insulator comprises a sheet of material including at least one encapsulated insulating cavity, andat least one secondary insulator positioned adjacent the primary insulator.2. The exhaust component assembly according to wherein the sheet of material comprises an insulating mat wrapped around the outer housing claim 1 , and wherein the at least one encapsulated insulating cavity comprises a sealed cavity that is fully encapsulated within the insulating mat.3. The exhaust component assembly according to wherein the sealed cavity is empty.4. The exhaust component assembly according to wherein the sealed cavity is filled with an insulating material.5. The exhaust component assembly according to wherein the insulating material comprises a first insulating material having a first heat transfer coefficient and wherein the insulating mat comprises a second insulating material having a second heat transfer coefficient that is greater than the first heat transfer coefficient.6. The exhaust component assembly according to whereinthe first insulating material comprises a non-fibrous material with a high porosity, a low density aerogel, a porous fibrous material, a foam material ...

EXHAUST STRUCTURE FOR INTERNAL COMBUSTION ENGINE

An exhaust structure for an internal combustion engine has an exhaust pipe having an inner pipe through which exhaust gas of the internal combustion engine circulates, and an outer pipe covering an outer periphery of the inner pipe, and in the exhaust pipe, an inner radiation layer provided on an outer surface of the inner pipe and having a higher emissivity than the inner pipe, an outer radiation layer provided on an inner surface of the outer pipe and having a higher emissivity than the outer pipe, and an intermediate layer proposed between the inner radiation layer and the outer radiation layer, configured to pass infrared radiation therethrough, and having a lower coefficient of thermal conductivity than the inner pipe and the outer pipe are provided. 1. An exhaust structure for an internal combustion engine , the exhaust structure comprising:an exhaust pipe having a double-pipe structure including an inner pipe through which exhaust gas of the internal combustion engine flows, and an outer pipe covering an outer periphery of the inner pipe;an inner radiation layer provided on an outer surface of the inner pipe and having a higher emissivity of an infrared energy than the inner pipe;an outer radiation layer provided on an inner surface of the outer pipe and having a higher emissivity of the infrared energy than the outer pipe; andan intermediate layer provided between the inner radiation layer and the outer radiation layer, the intermediate layer configured to pass infrared radiation through the intermediate layer, and the intermediate layer having a lower coefficient of thermal conductivity than the inner pipe and the outer pipe.2. The exhaust structure for the internal combustion engine claim 1 , according to claim 1 , wherein:the exhaust pipe is connected, via a flange coupling, to an upstream exhaust system component placed on an upstream side relative to the exhaust pipe;a flange on an exhaust-pipe side is attached to an upstream end of the outer pipe; ...

Thin Foil Encapsulated Assemblies

An injector tube assembly that includes thin foil insulation around a receiver tube and a relatively rigid housing secured to the thin foil and bearing on tube insulation while also being packed with junction insulation. 1. A tube junction housing comprising:a receptacle portion defining an insulation space;a receptacle portion lip joined to the injector housing and defining an injector flange opening; anda base flange joined to the a receptacle portion and including a thin-walled connection surface.2. The tube junction housing of claim 1 , wherein thereceptacle housing portion defines an injector tube axis through the injector flange opening and the base flange is substantially arcuate to define a receiver tube axis spaced apart from the base flange.3. The tube junction housing of claim 2 , wherein the injector tube axis and the receiver tube are disposed to define an angle of less than 90°.4. The tube junction housing of claim 1 , wherein the receptacle portion lip defines connector openings.5. The tube junction housing of claim 1 , wherein the base flange extends outwardly from the receptacle portion.6. The tube junction housing of claim 1 , and further comprising:an injector flange disposed in the tube junction housing adjacent to and substantially co-planar with the injector flange opening.7. The tube junction housing of claim 1 , and further comprising:insulation disposed in the insulation space.8. A tube junction assembly comprising:a receiver tube defining a receiver tube axis;tube insulation substantially surrounding the receiver tube; anda thin foil spaced apart from the receiver tube and substantially surrounding the tube insulation;an injector tube joined to the receiver tube at a tube junction and defining an injector tube axis; and 'a receptacle portion defining an insulation space, and an injector opening, and a base flange joined to the receptacle portion and including a thin foil connection surface joined to the thin foil, and the base flange rests ...

INSULATED HEAT SHIELD FOR VEHICLE EXHAUST SYSTEM

An exhaust component assembly includes a heat shield and a mounting structure to attach the heat shield to an outer housing of an exhaust component. The mounting structure comprises a primary insulator located between an outer surface of the outer housing and an inner surface of the heat shield and at least one secondary insulator positioned adjacent to the primary insulator. A method of assembling the heat shield to the outer housing of the exhaust component assembly is also disclosed. 1. An exhaust component assembly comprising:a heat shield; anda mounting structure to attach the heat shield to an outer housing of an exhaust component, wherein the mounting structure comprises a primary insulator located between an outer surface of the outer housing and an inner surface of the heat shield and at least one secondary insulator positioned adjacent the primary insulator.2. The exhaust component assembly according to wherein the primary insulator comprises an insulating mat wrapped around the outer housing.3. The exhaust component assembly according to wherein the insulating mat has a first edge and a second edge opposite of the first edge claim 2 , and wherein the at least one secondary insulator comprises at least a first piece of material positioned at the first edge and a second piece of material positioned at the second edge.4. The exhaust component assembly according to wherein the heat shield is placed over outer surfaces of the first and second pieces of material and the insulating mat and is held in compression against the outer housing by at least one attachment structure.5. The exhaust component assembly according to wherein the at least one attachment structure comprises at least one clamp or strap that holds the heat shield in compression against the first and second pieces of material and the insulating mat.6. The exhaust component assembly according to wherein claim 4 , when the heat shield is held in compression by the at least one attachment structure ...

Exhaust device of multi-cylinder engine

An exhaust device of a multi-cylinder engine which controls local introduction of exhaust gas to a catalyst device and a variation between cylinders of introduction positions of the exhaust gas to the catalyst device is provided. The exhaust device is arranged so that the cylinders extend in a vehicle width direction at a vehicle front part, and an exhaust line is arranged so as to extend rearward from a rear of the engine, wherein, in sequence from an upstream side of an exhaust gas flow, four independent exhaust pipes corresponding to the cylinders, collecting pipes which collect all independent exhaust pipes, and the catalyst device are provided. The single exhaust pipe includes two bending parts and a downstream part thereof is connected so that the exhaust gas is introduced from a direction that is diagonally lateral to an inlet part of the catalyst device.

Modular manifold for motor vehicles

A modular exhaust manifold 1 for a motor vehicle, with multiple adjoining manifold pipe modules, having: at least one engine flange, via which an inlet connection pipe of the manifold pipe modules can be connected to a cylinder head of the motor vehicle; at least one manifold pipe module, configured as a collector pipe module and having a contact flange, via which the exhaust manifold can be connected to an exhaust system of the motor vehicle, the respective manifold pipe modules having an overlap contour of a length a that permits the telescoping of two manifold pipe modules to an insertion depth t for coupling purposes, at least two manifold pipe modules being identical in shape, and a variation of the insertion depth t of at least 5 mm to 30 mm or 10 mm or 15 mm or 20 mm or 25 mm being obtained by the formation of length a of the overlap contour. A method for producing a manifold formed from multiple adjoining manifold pipe modules.

INSULATED COMPOSITE HEAT SHIELD FOR VEHICLE EXHAUST SYSTEM

An exhaust component assembly includes a heat shield formed from a composite material and a mounting structure that attaches the heat shield to an outer housing of an exhaust component. The mounting structure comprises an insulator located between an outer surface of the outer housing an inner surface of the heat shield. A method of assembling the composite heat shield to the outer housing of the exhaust component assembly is also disclosed. 1. An exhaust component assembly comprising:a heat shield formed from a non-metallic material; anda mounting structure to attach the heat shield to an outer housing of an exhaust component, wherein the mounting structure comprises an insulator located between an outer surface of the outer housing an inner surface of the heat shield.2. The exhaust component assembly according to wherein the heat shield includes at least one rib.3. The exhaust component assembly according to wherein the exhaust component defines a center axis claim 1 , and wherein the heat shield has an outer surface spaced radially outward of the inner surface of the heat shield claim 1 , and including an additional layer of insulating material attached to one or both of the inner and outer surfaces of the heat shield.4. The exhaust component assembly according to wherein the additional layer of insulating material comprises a wire mesh claim 3 , metal sheet claim 3 , or foil sheet.5. The exhaust component assembly according to wherein the heat shield includes at least one internal cavity encapsulated within the heat shield.6. The exhaust component assembly according to wherein the at least one cavity comprises a plurality of discrete internal cavities encapsulated within the heat shield.7. The exhaust component assembly according to wherein the at least one internal cavity is filled with an insulation material.8. The exhaust component assembly according to wherein the non-material comprises a fiber-reinforced composite material.9. The exhaust component assembly ...

HEAT SHIELD WITH INSULATED DOSER AND SENSOR MOUNT AREAS FOR A VEHICLE EXHAUST COMPONENT

An exhaust component assembly includes a housing having at least one mount area configured to be attached to another exhaust component. A primary heat shield is attached to the housing and includes at least one open area at the mount area. A secondary heat shield positioned adjacent to the primary heat shield to at least partially cover the mount area. A method of assembling the primary and secondary heat shields to the housing of the exhaust component assembly is also disclosed. 1. An exhaust component assembly comprising:a first exhaust component having at least one mount area configured to be attached to a second exhaust component;a first heat shield attached to an outer housing of the first exhaust component, the first heat shield including at least one open area at the mount area; anda secondary heat shield positioned to at least partially cover the mount area, wherein the secondary heat shield at least partially overlaps the first heat shield.2. The exhaust component assembly according to wherein the outer housing has an outer surface and an inner surface that defines an internal cavity for engine exhaust gases claim 1 , and wherein the at least one mount area comprises at least one protrusion that extends outwardly of the outer surface of the outer housing.3. The exhaust component assembly according to wherein the secondary heat shield comprises a base wall that includes at least one shield opening aligned with the open area in the first heat shield and a side wall extending away from the base wall about a periphery of the base wall claim 2 , and wherein the side wall cooperates with the heat shield to form an insulating area between an inner surface of the secondary heat shield and an outer surface of the mount area.4. The exhaust component assembly according to wherein the inner surface of the secondary heat shield is coated with an insulating coating.5. The exhaust component assembly according to including insulation material in the insulating area between ...

Catalyst device

A catalyst device includes a catalyst support, a tubular portion, which accommodates the catalyst support, a holding mat, which holds the catalyst support, an insulator provided over the outer circumferential surface of the tubular portion, and a heat insulating member arranged between the insulator and the tubular portion. The region of the outer circumferential surface of the tubular portion between the upstream end and the downstream end in the exhaust gas flowing direction is divided into two subregions arranged in a direction of the axis of the tubular portion. Of the two subregions, the subregion on the upstream side is defined as an upstream subregion, and the subregion on the downstream side is defined as a downstream subregion. The area that is covered with the heat insulating member in the downstream subregion is smaller than the area that is covered with the heat insulating member in the upstream subregion.

METHOD OF MANUFACTURING TUBULAR MEMBER FOR EXHAUST GAS TREATMENT DEVICE, AND COATING FILM FORMING DEVICE

A method of manufacturing a tubular member for an exhaust gas treatment device according to at least one embodiment of the present invention, the tubular member including a tubular main body made of a metal and an insulating layer formed on at least an inner peripheral surface of the tubular main body, the insulating layer containing glass, includes steps of: forming a coating film by spraying a coating liquid for insulating layer formation onto the inner peripheral surface of the tubular main body; and firing the coating film to obtain the insulating layer. The spraying is performed while the tubular main body is rotated with a length direction thereof being a rotation axis. 1. A method of manufacturing a tubular member for an exhaust gas treatment device , the tubular member including a tubular main body made of a metal and an insulating layer formed on at least an inner peripheral surface of the tubular main body , the insulating layer containing glass ,the method comprising steps of:forming a coating film by spraying a coating liquid for insulating layer formation onto the inner peripheral surface of the tubular main body; andfiring the coating film to obtain the insulating layer,wherein the spraying is performed while the tubular main body is rotated with a length direction thereof being a rotation axis.2. A method of manufacturing a tubular member for an exhaust gas treatment device , the tubular member including a tubular main body made of a metal and an insulating layer formed on at least an inner peripheral surface of the tubular main body , the insulating layer containing glass ,the method comprising steps of:forming a coating film by spraying a coating liquid for insulating layer formation onto the inner peripheral surface of the tubular main body; andfiring the coating film to obtain the insulating layer,wherein the spraying is performed for the tubular main body subjected to heating.3. The manufacturing method according to claim 2 , wherein the heating ...

Methods and systems for aftertreatment device

Methods and systems are provided for an exhaust system. In one example, a method includes heating an aftertreatment device during an engine off. The heating includes utilizing one or more of an injector, a heater, and a recirculation fan.

Internal combustion engine

An internal combustion engine includes a manifold channel. With respect to a longest cylinder that is a cylinder whose flow channel length from the cylinder to a collective portion is the longest among three cylinders, the manifold channel is provided with a hollow layer that covers a part of a channel wall in the flow channel direction of a branch channel connected to the longest cylinder. With respect to a shortest cylinder that is a cylinder whose flow channel length from the cylinder to the collective portion are the shortest, the manifold channel is not provided with a hollow layer that covers a channel wall of a branch channel connected to the shortest cylinder. A wall that forms the hollow layer for the longest cylinder is formed integrally and continuously with the same material as a channel wall of the branch channel connected to the longest cylinder.

Riding Lawn Mower

A riding lawn mower has an internal combustion engine and a muffler with a first housing. The internal combustion engine is connected to the muffler to supply exhaust gases originating from the internal combustion engine to the first housing of the muffler for noise damping of the exhaust gases. A second housing is provided that thermally insulates the first housing of the muffler. The second housing at least partially encloses the first housing of the muffler. The second housing has an exterior side with an emissivity of greater than 0.8. 1. A riding lawn mower comprising:an internal combustion engine;a muffler comprising a first housing, wherein the internal combustion engine is connected to the muffler to supply exhaust gases originating from the internal combustion engine to the first housing of the muffler for noise damping of the exhaust gases;a second housing configured to thermally insulate the first housing of the muffler, wherein the second housing at least partially encloses the first housing of the muffler, and wherein the second housing comprises an exterior side comprising an emissivity of greater than 0.8.2. The riding lawn mower according to claim 1 , wherein the emissivity is greater than 0.9.3. The riding lawn mower according to claim 1 , wherein the second housing encloses the first housing of the muffler such that the second housing claim 1 , relative to a point inside the first housing of the muffler claim 1 , covers a solid angle range of at least 70% of an entire solid angle.4. The riding lawn mower according to claim 3 , wherein the solid angle range amounts to at least 90% of the entire solid angle.5. The riding lawn mower according to claim 1 , wherein the second housing completely encloses the first housing of the muffler with the exception of at least one opening of the second housing configured to connect to at least one connecting line connecting the internal combustion engine to the muffler and with the exception of an opening of the ...

HEAT INSULATING SHEET MEMBER, AN EXHAUST GAS INTRODUCTION PATH AND A TURBOCHARGER

A heat insulating sheet member capable of enhancing a heat insulating performance of an exhaust gas introduction path by an easy operation, including such a path in a turbocharger. The heat insulating sheet member is a bendable member formed from an inorganic flexible material. The heat insulating sheet member includes a first region corresponding to an inlet of a bottom wall portion, a second region corresponding to at least a terminating end portion of the scroll portion, a third region provided between the first region and the second region and corresponding to a coupling wall portion, and a fourth region corresponding to an outer peripheral wall portion. The first region and the third region, the third region and the second region, and the first region and the fourth region are coupled to each other with the inorganic flexible material in a continuous state. 1. A structure for exhausting gas from an internal combustion engine , the structure comprising a housing and an inner shell forming an exhaust gas introduction flow path , wherein the structure is characterized by further comprising:a heat insulating sheet member configured as a bendable member formed from an inorganic flexible material and being disposed between the housing and the inner shell,the housing including an outer peripheral wall portion and an inner peripheral wall portion extending along a central axis, and a bottom wall portion provided on a first side in an axial direction, the axial direction being an extending direction of the central axis, an exhaust gas introduction portion being formed in a portion of the outer peripheral wall portion in a circumferential direction and configured to introduce exhaust gas into the housing, the bottom wall portion including an inlet of the exhaust gas introduction flow path formed at a position corresponding to the exhaust gas introduction portion in the circumferential direction, and a scroll portion extending in a spiral manner about the central axis ...

Thermally insulative, durable, reflective convoluted sleeve and method of construction thereof

A thermally insulative, flexible, durable reflective exhaust pipe sleeve and method of construction thereof is provided. The sleeve includes a knit, heat-resistant inner layer, a reflective metallic outer layer and an intermediate layer sandwiched between the inner and outer layers. The inner layer is constructed having an inner surface exposed to an inner cavity of the sleeve and the outer layer is constructed having an outer reflective surface exposed to the surrounding environment. The intermediate layer is constructed of a woven material and is sandwiched in abutment with the inner and outer layers. The outer and intermediate layers are convoluted, while the inner layer is cylindrically tubular.

Inlet Device for a Catalytic Converter

An inlet device for a catalytic converter is disclosed, which includes an inner shell, an outer shell and a flange. The inner shell, outer shell and flange each have a fastening end with a fastening opening. The flange is arranged at least partially between the inner shell and outer shell and fastened to the inner shell by a first connection between an outer surface of the inner shell and a front face on the flange, and to the outer shell by a second connection different from the first one between an outer surface of the flange and a front face of the outer shell. 110-. (canceled)11. An inlet device for a catalytic converter comprising:an inner shell having a first fastening end defining a first opening;an outer shell having a second fastening end defining a second opening, wherein the outer shell at least partially surrounds the inner shell;a flange having a third fastening end defining a third opening, wherein the third fastening end is at least partially arranged between the first and second fastening ends;a first connection fastening the inner shell to the flange; anda second connection, which is separate from the first connection, fastening the outer shell to the flange.12. The inlet device according to claim 11 , wherein the first connection is arranged between a first outer surface of the inner shell and a third front face of the flange claim 11 , and the second connection is arranged between a third outer surface of the flange and a second front face of the outer shell.13. The inlet device according to claim 11 , wherein the first connection comprises a first welded joint between the first outer surface of the inner shell and the third front face of the flange claim 11 , and the second connection comprises a second welded joint between the third outer surface of the flange and the second front face of the outer shell.14. The inlet device according to claim 11 , wherein the outer shell at least partially covers the first connection.15. The inlet device ...

Muffler assembly unit

A muffler assembly unit for an exhaust system of an internal combustion engine, especially in a vehicle, includes a muffler ( 42 ) with a muffler housing ( 10 ). The muffler housing ( 10 ) is elongated along a longitudinal axis of the housing. A housing jacket ( 40 ) encloses the muffler housing ( 10 ). At least one air guiding bulge ( 34 ) is provided on the housing jacket ( 40 ).

Exhaust manifold for an exhaust system of a combustion engine

An exhaust manifold for an exhaust system of a combustion engine includes an outer shell, an inner shell arranged in the outlet shell, and an inlet flange which is configured for attachment to a cylinder head of the combustion engine and has a receptacle. The inner shell is floatingly supported in the outer shell and has an inlet-flange-side edge which is formed with an outwardly bent flange positioned in the receptacle of the inlet flange. The outer shell has an inlet-flange-side edge which has at least one area which rests in the receptacle upon the outwardly bent flange and is joined with the receptacle.

Reservoir for gas treatment device having loose fill insulation and an associated method of use

An exhaust gas treatment device, which includes an outer layer, an inner layer that is at least in part disposed within the outer layer, and an insulation material disposed in an enclosed space between the outer layer and the inner layer, where at least one reservoir disposed with the insulation material is connected to the enclosed space and in fluid communication therewith and a manufacturing method that includes placing an insulation material into an enclosed space between an inner layer and an outer layer for an exhaust gas treatment device and placing the insulation material into a reservoir connected to the enclosed space and in fluid communication therewith.

THIN FOIL ENCAPSULATED ASSEMBLIES

An injector tube assembly that includes thin foil insulation around a receiver tube and a relatively rigid housing secured to the thin foil and bearing on tube insulation while also being packed with junction insulation. 1. A tube junction assembly comprising:a receiver tube defining a receiver tube axis;tube insulation substantially surrounding the receiver tube; anda thin foil spaced apart from the receiver tube and substantially surrounding the tube insulation;an injector tube joined to the receiver tube at a tube junction and defining an injector tube axis; and 'a receptacle portion defining an insulation space, and an injector opening, and a base flange joined to the receptacle portion and including a thin foil connection surface joined to the thin foil, and the base flange rests on the tube insulation and is spaced apart from the receiver tube.', 'a tube junction housing having;'}2. The tube junction assembly of claim 1 , wherein the base flange is substantially arcuate relative to claim 1 , and spaced apart from claim 1 , the receiver tube axis.3. The tube junction assembly of claim 2 , wherein the injector tube axis and the receiver tube axis are disposed to define an angle of less than 90°.4. The tube junction assembly of claim 1 , wherein the receptacle portion lip defines connector openings.5. The tube junction assembly of claim 1 , wherein the base flange extends outwardly from the receptacle portion.6. The tube junction assembly of claim 1 , and further comprising:an injector flange disposed in the receptacle portion adjacent to and substantially co-planar with the injector flange opening.7. The tube junction assembly of claim 1 , and further comprising:junction insulation disposed in the insulation space. This application is a divisional of U.S. application Ser. No. 14/467,907, filed Aug. 25, 2014, which claims the benefit of U.S. Provisional Application No. 61/869,841, filed Aug. 26, 2013, the disclosures of which are incorporated by reference herein. ...

COMPONENT OF AN EXHAUST SYSTEM AND METHOD OF MANUFACTURING SUCH A COMPONENT

A component of an exhaust system, in particular of an exhaust system of an internal combustion engine, has a double-walled pipe which encloses at least one air gap. The double-walled pipe includes at least two layers positioned radially over each other and attached to each other at a plurality of fixing points distributed over a periphery. At least one of the layers is a structured layer and has a wave structure with a plurality of wave crests and wave troughs distributed along the periphery. For manufacturing the component, at least one sheet metal strip is provided, which is structured in sections to give it a wave form. A brazing material is applied at the intended fixing points. The sheet metal strip is then wound up to form the double-walled pipe. The latter is calibrated, and the layers are connected at the fixing points by induction brazing. 1. A component of an exhaust system , in particular of an exhaust system of an internal combustion engine , comprising:a double-walled pipe which encloses at least one air gap, wherein the double-walled pipe includes at least two layers positioned radially over each other and attached to each other at a plurality of fixing points distributed over a periphery, at least one of the layers being a structured layer and having a wave structure with a plurality of wave crests and wave troughs distributed along the periphery.2. The component of wherein at least one of the structured layers does not extend in a straight line between two neighboring fixing points claim 1 , at least in sections.3. The component of wherein the structured layer does not extend in a straight line between each wave crest and each wave trough.4. The component of wherein claim 3 , formed between the wave crest and the wave trough claim 3 , is a bend in which two straight-line sections adjoin each other.5. The component of wherein the wave structure has essentially a sinusoidal shape and at least one of the fixing points is positioned outside the wave ...

SYSTEMS AND METHODS FOR AN EXHAUST-GAS AFTERTREATMENT DEVICE

Methods and systems are provided for an exhaust-gas aftertreatment device. In one example, an exhaust-gas aftertreatment device comprises a housing with a first can comprising a first catalytic converter and a second can comprising a second catalytic converter, wherein the first catalytic converter is not concentric with the first can. 1. A system , comprising:an exhaust-gas aftertreatment housing comprising a catalytic converter comprising a diameter smaller than a diameter of a can of the exhaust-gas aftertreatment housing, wherein the catalytic converter is pressed against an interior surface of the can.2. The system of claim 1 , wherein the catalytic converter is a first catalytic converter and the can is a first can claim 1 , the exhaust-gas aftertreatment housing further comprising a second can housing a second catalytic converter claim 1 , wherein a diameter of the second catalytic converter is equal to a diameter of the second can.3. The system of claim 2 , wherein the second can is larger than the first can.4. The system of claim 2 , wherein the first can is fluidly coupled to the second can claim 2 , wherein the second catalytic converter is concentric with the second can.5. The system of claim 4 , where exhaust gas from the first can flows through a duct arranged between the first catalytic converter and a first wall of the first can claim 4 , wherein the first wall is opposite to the interior surface and is a wall of the first can nearest to the second can claim 4 , wherein the duct fluidly couples the first can to the second can.6. The system of claim 2 , wherein an injector is arranged in the second can upstream of the second catalytic converter claim 2 , wherein exhaust gas flow through the second catalytic converter is in a direction of gravity.7. An exhaust-gas treatment apparatus claim 2 , comprising:a housing comprising a first can comprising a first catalytic converter and a second can comprising a second catalytic converter, wherein a second can ...

VEHICLE EXHAUST SYSTEM

A vehicle exhaust system includes a tubular component which allow passage of exhaust gases therethrough. The tubular component includes an upstream pipe having a first end and a second end. The tubular component further includes a downstream pipe having a third end and a fourth end. The third end of the downstream pipe at least partially encloses the second end of the upstream pipe such that the upstream pipe and the downstream pipe together define a junction region and the fourth end defines a primary exhaust gas flow path. The downstream pipe at least partially defines an opening within the junction region such that the opening provides a secondary exhaust gas flow path. 1. A vehicle exhaust system comprising: an upstream pipe having a first end and a second end;', 'a downstream pipe having a third end and a fourth end, wherein the third end of the downstream pipe at least partially encloses the second end of the upstream pipe such that the upstream pipe and the downstream pipe together define a junction region and the fourth end defines a primary exhaust gas flow path; and', 'wherein the downstream pipe at least partially defines one or more openings within the junction region such that the one or more openings provide a secondary exhaust gas flow path., 'a tubular component adapted to allow passage of exhaust gases therethrough, the tubular component comprising2. The vehicle exhaust system of claim 1 , wherein the second end of the upstream pipe defines at least one notch.3. The vehicle exhaust system of claim 1 , wherein the downstream pipe defines a raised collar extending at least partially along a circumference of the downstream pipe within the junction region such that the one or more openings are defined within the raised collar.4. The vehicle exhaust system of claim 1 , wherein the downstream pipe defines a raised trough within the junction region such that the one or more openings are defined within the raised trough.5. The vehicle exhaust system of ...

Exhaust gas purification device

exhaust gas purifier

차체에 탑재된 엔진 바로 뒤의 배기 가스 통로에 배치된 전단 산화 촉매와, 상기 전단 산화 촉매의 주위를 덮도록 마련되어, 상기 엔진에 의해 생성된 배기 가스를 소음하면서 배출하는 머플러를 구비하고, 상기 머플러는, 엔진 바로 뒤의 상류측 배기관에 접속되어, 배기 가스가 유입되는 유입구와, 하류측 배기관에 접속되어, 상기 유입구로부터 유입된 상기 배기 가스가, 상기 전단 산화 촉매를 통과한 후, 배출되는 유출구를 갖도록 구성한다. A front-end oxidation catalyst disposed in an exhaust gas passage directly behind an engine mounted on a vehicle body, and a muffler provided to cover a periphery of the front-end oxidation catalyst and for emitting exhaust gas generated by the engine while silenced, the muffler comprising: is connected to an upstream exhaust pipe immediately behind the engine, an inlet through which exhaust gas flows, and an outlet connected to a downstream exhaust pipe, through which the exhaust gas flowing in from the inlet passes through the front-stage oxidation catalyst and then is discharged configured to have

Insulated double-walled exhaust system component and method of making the same

本发明涉及一种双壁排气系统部件及其制造方法，所述双壁排气系统部件具有设置在内管和外管之间的中空陶瓷微球。所述中空陶瓷微球具有如下粒度分布，其中，基于总体积，至少90％的所述中空陶瓷微球具有小于150微米的尺寸。

Exhaust pipe structure

(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。

Device for injection of liquid medium into exhaust gases of internal combustion engine

FIELD: motors and pumps. SUBSTANCE: device for injection of liquid medium into the exhaust gases of internal combustion engine, comprising: a pipeline (2) intended for the flow of exhaust gases through it; an injection chamber (3) bounded in the radial directions by the tubular wall (8); means (13) for injecting for injection liquid medium into the injection chamber; a mixing channel (14) into which there is an outlet (10) from the injection chamber for feeding exhaust gases; a bypass channel (15) having an outlet (17) through which it is connected with the mixing channel; an end wall (7) located in the injection chamber downstream and separating the chamber from the mixing channel so that the outlet of the chamber is located on the periphery of the end wall. The outlet of the bypass channel is near the outlet of the injection chamber, so that the exhaust gases that flow into the mixing channel through the outlet of the chamber collide with the exhaust gases that flow into the mixing channel through the outlet of the bypass channel. EFFECT: increased evaporation of reducing agent and providing the effective catalytic conversion. 11 cl, 1 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (51) МПК F01N 3/20 F01N 3/24 (13) 2 536 466 C1 (2006.01) (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ 2013123134/06, 13.10.2011 (24) Дата начала отсчета срока действия патента: 13.10.2011 (72) Автор(ы): ЛОМАН Петер (SE) (73) Патентообладатель(и): СКАНИА СВ АБ (ПАБЛ) (SE) Приоритет(ы): (30) Конвенционный приоритет: R U 22.10.2010 SE 1051099-8 (45) Опубликовано: 27.12.2014 Бюл. № 36 1785606 A1, 16.05.2007. DE102006019052 A1, 31.10.2007. US 2009158722 A1, 25.06.2009. DE 4203807 A1, 12.08.1993. US 2010212301 A1, 26.08.2010 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 22.05.2013 (86) Заявка PCT: 2 5 3 6 4 6 6 (56) Список документов, цитированных в отчете о поиске: DE 102008063515 A1, 24.06.2010. EP 2 5 3 6 4 6 6 ...

Exhaust purification device

Insulated double-walled exhaust system component and method of making the same

A double-walled exhaust system component having glass bubbles disposed between inner and outer pipes and method of making the same. The glass bubbles have a size distribution wherein, on a bulk volume basis, at least 90 percent of the glass bubbles have a size of less than 150 micrometers.

Insulated double-walled exhaust system component and method of making the same

A double-walled exhaust system component having hollow ceramic microspheres disposed between inner and outer pipes and method of making the same. The hollow ceramic microspheres have a size distribution wherein, on a bulk volume basis, at least 90 percent of the hollow ceramic microsphere have a size of less than 150 micrometers.

Exhaust gas system for passenger car, has injector angularly ending at axial direction of inner pipe that is arranged in region of corrugated pipe, and mixing device arranged at inner pipe for mixing reducing agent with exhaust gas

The system (10) has two pipes (12, 16) and a corrugated pipe (14) surrounding an inner pipe (18) in which exhaust gas flows in an axial direction. An injector (22) injects a reducing agent (24) into the inner pipe, where the reducing agent is provided for reducing nitrogen monoxide to the nitrogen. The injector angularly ends at an axial direction of the inner pipe that is arranged in a region of the corrugated pipe. A mixing device (30) is arranged at the inner pipe for mixing the reducing agent with the exhaust gas.

Patent DE4019899C1

Pipe assembly for the gaseous media pipeline

FIELD: pipelines. SUBSTANCE: invention relates to a pipe assembly for positioning in a pipeline for a gaseous medium. Device comprises a tubular body (22), a tubular flexible sealing element (23), which at the first end (25) is fixedly mounted outside the tubular body and which at the second end (42) comprises a flanged element (27). Flanged element (27) is made with possibility of removable attachment to the flanged element (31) in the connecting pipe (21) in the pipeline, so as to when the flanged elements are attached to each other and the pipe assembly is respectively connected to the connecting pipe, provide movement between the tubular body and the connecting pipe due to the flexibility of the sealing elements. EFFECT: mutual attachment of the flanged elements (27, 31) forms only the contact connection of the pipe assembly (22) to the connecting pipe (21). 13 cl, 3 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 646 166 C1 (51) МПК F16L 27/08 (2006.01) F02B 37/02 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК F16L 27/08 (2017.08); F02B 37/02 (2017.08) (21)(22) Заявка: 2017100242, 07.07.2015 (24) Дата начала отсчета срока действия патента: (73) Патентообладатель(и): СКАНИА СВ АБ (SE) Дата регистрации: 01.03.2018 (56) Список документов, цитированных в отчете о поиске: EP 0664416 A1, 26.07.1995. SU 862838 A3, 07.09.1981. US 5159811 A, 03.11.1992. FR 2369497 A1, 26.05.1978. US 20010054820 A1, 27.12.2001. SE 535677 C2, 04.09.2012. 24.07.2014 SE 1450914-5 (45) Опубликовано: 01.03.2018 Бюл. № 7 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 27.02.2017 (86) Заявка PCT: 2 6 4 6 1 6 6 (87) Публикация заявки PCT: WO 2016/013970 (28.01.2016) Адрес для переписки: 129090, Москва, ул. Б. Спасская, 25, стр. 3, ООО "Юридическая фирма Городисский и Партнеры" (54) ТРУБНЫЙ УЗЕЛ ДЛЯ ТРУБОПРОВОДА ДЛЯ ГАЗООБРАЗНОЙ СРЕДЫ (57) Реферат: Изобретение относится к трубному узлу для фланцевые элементы прикреплены друг ...

Composite dual tubing

내용 없음

Pipe unit in a conduit for a gaseous medium

一种用于布置在用于气态介质的管道中的管单元，所述管单元包括管形本体(22)、管形柔性密封元件(23)，所述管形柔性密封元件在第一端部(25)处固定地接附在管形本体外部并且在第二端部(42)处包括凸缘元件(27)。凸缘元件(27)可拆卸地接附到管道中的连接管(21)中的凸缘元件(31)，以便在凸缘元件固定到彼此并且管单元由此与连接管连接时，经由密封元件的柔性允许管形本体与连接管之间的运动。所述凸缘元件(27，31)的相互固定形成管单元(22)到所述连接管(21)的唯一触碰连接。

Mounting interface for exhaust gas treatment assembly

An exhaust gas treatment assembly comprises a housing which is radially inwardly deformed in a clamping region to retain a block of ceramic or other material which may be arranged as a filter or catalyst within the housing. The clamping region is deformed to a first surface level and includes local protuberances which extend radially outwardly to a second surface level and support a mounting surface for mounting the assembly in a mounting connector. The first surface level may vary to accommodate the dimensions of each individual block while the second surface level is fixed so that the mounting surface can fit in a mounting assembly with standardized dimensions.

Joint for an engine exhaust system component

The present disclosure relates to an access joint for an engine exhaust system. The access joint includes first and second exhaust conduits each having a conduit body and a flange unitary with the conduit body. The flanges have first surfaces that face toward one another and second surfaces that face away from one another. The joint also includes a clamp having a channel that receives the flanges and that compresses the flanges toward one another when the clamp is tightened.

Mounting interface for exhaust gas treatment assembly

Exhaust gas purification device

本申请发明以在向发动机(1)装配排气气体净化装置(2)时顺畅地抬起排气气体净化装置(2)为课题。本申请发明的排气气体净化装置(2)具备将发动机(1)排出的排气气体净化的多个过滤器体(43、44)和内置各前述过滤器体(43、44)的由多个净化箱体(47、49、51)构成的净化外壳(40)。将各前述净化箱体(47、49、51)排列在排气气体移动方向，由厚板法兰(59、60、73、74)连结，据此构成前述净化外壳(40)。将悬吊体(101)一体地形成于前述厚板法兰(73)。

Arrangement for introducing a liquid medium into exhaust gases from a combustion engine

연소 기관에서 나온 배기 가스에 액매를 도입시키는 본 발명의 장치는, 혼합 도관(2)과, 혼합 도관 내에 액매를 주입하기 위한 주입 수단(4)과, 상기 혼합 도관의 상류측에 위치된 인입 도관(6)을 포함하고, 상기 인입 도관은 단면이 환형인 제1 도관 섹션(14)과, 단면이 환형이고 상기 제1 도관의 하류측에 위치된 상기 혼합 도관을 둘러싸고, 상기 제1 도관 섹션은 제2 도관 섹션을 둘러싸고, 혼합 도관은 상기 제1 도관 섹션의 환형 배출구(16)가 제2 도관 섹션의 환형 인입구(17)와 연결되는 유동 역전 섹션(18)으로서, 배기 가스가 상기 제1 도관 섹션에서 배기 가스의 방향과 반대 방향으로 제2 도관 섹션을 관통하여 흐르도록 상기 인입 도관을 관통하여 흐르는 배기 가스의 유동 방향을 역전시키도록 구성된 유동 역전 섹션(18)을 추가로 구비하고 있다.

exhaust manifold

Abgaskrümmer (10) für eine Brennkraftmaschine mit mehreren Abgasführungen (20, 30, 34, 36), deren eines eine Abgaseinlassöffnung (13) aufweisendes Ende (12) jeweils mit einem Auslass der Brennkraftmaschine verbindbar ist und deren anderes Ende jeweils mit einer eine Abgasauslassöffnung (24) aufweisenden Sammeleinrichtung (21) verbunden ist, insbesondere direkt oder über eine der anderen Abgasführungen (20, 36), dadurch gekennzeichnet, dass ein Teil (20) der Abgasführungen als Gussteil (16) und ein anderer Teil (30, 34, 36) als Rohr- oder Schalenteil (18) ausgebildet ist. Exhaust manifold (10) for one Internal combustion engine with a plurality of exhaust gas ducts (20, 30, 34, 36), whose an exhaust inlet port (13) having end (12) each with an outlet of the internal combustion engine is connectable and the other end in each case with an exhaust outlet opening (24) comprising collecting means (21), in particular directly or via one of the other exhaust pipes (20, 36), characterized in that a part (20) of the exhaust ducts as a casting (16) and another part (30, 34, 36) as a pipe or Shell part (18) is formed.

Method for producing an exhaust gas conducting device and tool therefor

Outboard motor catalyst mounting structure

Composite dual tubing

내용 없음

DEVICE FOR INTRODUCING EXHAUST FUMES FROM A MARINE SHIP ENGINE IN A WASHER

Ce dispositif comporte une cheminée (30) verticale d'amenée des fumées (F), qui traverse une paroi de fond (2) du laveur (1) et qui inclut, en partie basse, une gaine (31), qui est réalisée en un matériau résistant à une température d'au moins 350°C et qui est agencée à l'extérieur du laveur. Pour limiter l'encroûtage salin de ce dispositif, la cheminée inclut, en partie haute, un conduit (32) à multiples parois. Ce conduit comprend à la fois une paroi intérieure (32.1), qui est réalisée en un matériau résistant à une température d'au moins 350°C, et une paroi extérieure (32.2), qui est séparée de la paroi intérieure par un isolant (32.3). De plus, ce conduit est au moins partiellement agencé à l'intérieur du laveur, en s'étendant en longueur sur au moins 300 mm vers le haut depuis la paroi de fond du laveur. This device comprises a vertical chimney (30) for supplying the fumes (F), which passes through a bottom wall (2) of the washer (1) and which includes, in the lower part, a sheath (31), which is made of a material resistant to a temperature of at least 350 ° C and which is arranged outside the washer. To limit the salt encrustation of this device, the chimney includes, in the upper part, a duct (32) with multiple walls. This duct comprises both an inner wall (32.1), which is made of a material resistant to a temperature of at least 350 ° C, and an outer wall (32.2), which is separated from the inner wall by an insulator ( 32.3). In addition, this duct is at least partially arranged inside the scrubber, extending in length over at least 300 mm upwards from the bottom wall of the scrubber.

Pipe unit in a conduit for a gaseous medium

DUAL-WALL EXHAUST DUCT COMPRISING A DIFFUSION MEANS.

Exhaust manifold for motor vehicle engines.

Selon l'invention, ledit collecteur comprend une semelle (10) destinée à être fixée sur la culasse (50) dudit moteur, et une tubulure (20) formée d'une paroi extérieure (21) et d'une paroi intérieure (22) assemblées par leurs bords (211, 221) respectifs sur ladite semelle (10), un matériau (30) formant écran au rayonnement thermique étant interposé entre lesdites parois extérieure (21) et intérieure 22. Application aux véhicules automobiles munis d'un dispositif d'échappement à catalyseur. According to the invention, said manifold comprises a sole (10) intended to be fixed to the cylinder head (50) of said engine, and a pipe (20) formed of an outer wall (21) and an inner wall (22) assembled by their respective edges (211, 221) on said sole (10), a material (30) forming a thermal radiation shield being interposed between said outer (21) and inner 22 walls. Application to motor vehicles fitted with a device for catalytic converter.

ENGINE EXHAUST GAS HEATING DEVICE, EXHAUST MANIFOLD AND EXHAUST LINE, AND VEHICLE COMPRISING THEM.

Catalytic converter having a metallic monolith mounted by a heat-insulating mat of refractory ceramic fibers

A catalytic converter has a metallic monolith that is mounted in a canister by a heat-insulating mat of melt-formed refractory ceramic fibers that have been annealed to provide a Resiliency Value of at least 10 kPa. Previously known melt-blown fibers used in such mats were thought to require a fine-grained crystalline structure to have a higher resiliency value. However, a mat in accordance with the invention having a Resiliency Value of at least 10 does not take a compression set that would allow the monolith to become loose, is made from ceramic fibers which are preferably melt-formed from a mixture of about equal parts by weight of Al2O3 and SiO2. After being annealed, the ceramic fibers can have a fine-grained crystalline structure, but significant energy savings can be realized by reducing the annealing temperatures and times such that the fibers have an amorphous structure while still attaining excellent Resiliency Values.

Exhaust gas depollution unit for e.g. diesel engine of motor vehicle, has filtering substrate maintained in envelope by maintaining sheet, where envelope is surrounded by sleeve in which coolant circulates between inlet and outlet

The unit has a thermal conductive filtering substrate (9a) for filtration of soot particles, which is maintained in a metallic envelope (9d) by a thermal conductive maintaining sheet (9c). The envelope is surrounded by a sleeve (9b) in which coolant circulates between an inlet (15) and an outlet (16). The envelope has a double wall forming the sleeve. The substrate is made up of silicon carbide. The sheet is incorporated in a part of mat of expanded metal. Independent claims are also included for the following: (1) a vehicle equipped with an exhaust line comprising a coolant circulation circuit with a branch passing through the sleeve between the inlet and the outlet (2) a strategy for controlling circulation of coolant in a depollution unit by stopping circulation of coolant.

Exhaust manifold for an internal combustion engine

Exhaust manifold of the type comprising branches which, at one end, join to a flange 3 for fixing to the cylinder head and, at the other end, to a flange 4 for fixing to the exhaust pipe. According to the invention, it includes two half-shells 6, 7 each one consisting of two, inner 2 and outer 1 metal sheets separated at every point by an air gap 5. Application: particularly to high-performance engines.

Exhaust manifold for catalyzed exhaust device, and composite tube intended to equip said manifold.

EXHAUST GAS LINE FOR AN INTERNAL COMBUSTION ENGINE

La présente invention concerne une conduite de gaz d'échappement pour un moteur à combustion interne. Cette conduite est formée d'un tube 3 thermiquement isolé présentant une couche catalytique 4 sur sa face interne. Le tube 3 a une paroi interne 4 enroulée en spirale avec un pas S' qui est égal à 0,2-10 fois le diamètre d de la section de passage libre du tube 3. La conduite 1 est reliée à un moteur à combustion interne 6 et communique avec le canal d'échappement 7 de ce dernier. L'invention s'applique aux moteurs à combustion interne des véhicules.

THERMAL SCREEN ASSEMBLY FOR A VEHICLE EXHAUST GAS INSTALLATION AND EXHAUST GAS INSTALLATION COMPONENT OF A MOTOR VEHICLE

Un composant d'installation de gaz d'échappement d'un véhicule automobile est montré, comportant un boîtier (22) transportant du gaz, un écran thermique (12) logé du côté extérieur du boîtier (22), et au moins un treillis métallique (14) qui est au moins en partie prévu entre l'écran thermique (12) et le boîtier (22) et présente un premier point de fixation (BH) et un deuxième point de fixation (BG). L'écran thermique (12) est fixé au boîtier (22) au moyen du treillis métallique (14) en fixant le treillis métallique (14) tant à l'écran thermique (12) au moyen du premier point de fixation (BH), qu'au boîtier (22) au moyen du deuxième point de fixation (BG), et le premier point de fixation (BH) étant séparé, en particulier latéralement décalé du deuxième point de fixation (BG). Un ensemble d'écran thermique est en outre représenté. An exhaust system component of a motor vehicle is shown having a gas carrying case (22), a heat shield (12) on the outside of the case (22), and at least one wire mesh (14) which is at least partially provided between the heat shield (12) and the housing (22) and has a first attachment point (BH) and a second attachment point (BG). The heat shield (12) is fixed to the housing (22) by means of the wire mesh (14) by fastening the wire mesh (14) to the heat shield (12) by means of the first attachment point (BH), than the housing (22) by means of the second fixing point (BG), and the first fixing point (BH) being separated, in particular laterally offset from the second fixing point (BG). A heat shield assembly is further shown.

Vehicle IC engine exhaust manifold

The vehicle-engine exhaust ducting, esp. for a manifold with several branch-stubs for connecting to the cylinder head outlets, has an inner element of heat-resisting steel sheet inside a casing insulated from it. That element (1) is axially flexible, at least in sections, and supported at least locally by the rigidly-constructed casing (14). To be partic. effective, the casing is axially stiff and supports the element axially. Usefully it also is of sheet steel, partic. structural steel; its stiffness may be increased by longitudinal ribs. Engagement between element and casing is positive.

EXHAUST DEVICE FOR INTERNAL COMBUSTION ENGINE

L'organe d'échappement d'un moteur à combustion interne selon l'invention comprend un collecteur d'échappement (2) avec une tôle interne (20) et une tôle externe (21) soudé à un turbocompresseur (3) par un conduit d'entrée avec une tôle interne (30) et une tôle externe (31) caractérisée en ce que le conduit d'entrée est soudé à la tôle extérieure (21) du collecteur d'échappement et que la tôle intérieure (20) du collecteur (2) est relié par une liaison glissière. La soudure (4) entre le collecteur d'échappement (2) et le conduit d'entrée doit permettre de limiter les contraintes mécaniques d'origine thermique susceptibles d'entrainer des fissures dans la soudure (4) pouvant aller jusqu'à sa destruction, c'est pourquoi le conduit d'entrée qui a proportionnellement une température plus faible est relié à la tôle extérieure (21) du collecteur d'échappement (2) qui est également à une température inférieure à la tôle intérieure (20) du collecteur (2). L'écart de température étant plus faible entre les différentes tôles soudées entre elles, les contraintes mécaniques d'origines thermiques en sont d'autant réduites. La liaison glissière de la tôle interne (20) du collecteur (2) avec le conduit d'entrée du carter turbine donne à celle-ci la possibilité de se dilater librement sous l'effet de la chaleur. The exhaust member of an internal combustion engine according to the invention comprises an exhaust manifold (2) with an inner plate (20) and an outer plate (21) welded to a turbocharger (3) by a conduit inlet with an inner plate (30) and an outer plate (31) characterized in that the inlet duct is welded to the outer panel (21) of the exhaust manifold and the inner panel (20) of the manifold (2) is connected by a slide connection. The weld (4) between the exhaust manifold (2) and the inlet duct must make it possible to limit the mechanical stresses of thermal origin likely to cause cracks in ...

EXHAUST TUBING FOR MOTOR VEHICLE ENGINES

Internal combustion engine`s exhaust manifold for guiding exhaust gas, has molded external structure with inlet and outlet flanges, and space between tubes and pipes are filled by covering heat insulating material

The manifold (10) has a molded external structure (12) provided with inlet pipes (14a, 14b) joined to form an outlet pipe (16). An inner tube (18a, 18b) for guiding of gas is arranged inside each of the pipes leaving a space between the tubes and the corresponding pipes. The structure has an inlet flange (24a, 24b) in which the inlet pipe and inner tube are opened, and an outlet flange (30) in which the pipe (16) and tube are opened. A space between the inner tubes and the inlet pipes are filled by covering of heat insulating material integrated with a mold of the structure.

Exhaust gas aftertreatment device for internal-combustion engine, has movable bearing connection provided on one front side between base part and cylinder barrel such that relative movement of cylinder barrel is enabled

Die Erfindung betrifft eine Abgasnachbehandlungseinrichtung für eine Brennkraftmaschine. Die Abgasnachbehandlungseinrichtung weist ein zylindrisches Gehäuse mit an den Stirnseiten angeordneten Bodenteilen (2; 3) auf. Erfindungsgemäß ist zwischen dem ersten Bodenteil (2) und dem Zylindermantel (1) des Gehäuses eine Loslagerverbindung derart vorgesehen, dass an der Verbindungsstelle eine Relativbewegung des Zylindermantels (1) gegenüber dem ersten Bodenteil (2) in Richtung der Gehäuselängsachse ermöglicht ist. Das zweite Bodenteil (3) ist über ein Festlager fest mit dem Zylindermantel (1) verbunden.

Mounting mat and pollution control device with the same

마그네슘 알루미늄 실리케이트 유리 섬유와 비정질 내화 세라믹 섬유, 생체용해성 세라믹 섬유, 및/또는 열처리 실리카 섬유를 포함하는 부직 매트. 부직 매트의 실시 형태는 의외로 실제 조건 고정 시험(Real Condition Fixture Test)의 25℃ 내지 700℃/400℃의 3회의 열 사이클 후의 탄성값(Resiliency Value)이 부직 매트의 임의의 개별 유형의 섬유로 이루어지는 동등한 부직 매트의 탄성값보다 적어도 1.1배 더 크다. 부직 매트는, 예를 들어, 오염 제어 장치 및 기타 단열 응용에 유용하다. A non-woven mat comprising magnesium aluminum silicate glass fibers and amorphous refractory ceramic fibers, biodegradable ceramic fibers, and / or heat treated silica fibers. An embodiment of the nonwoven mat may unexpectedly be characterized in that the Resiliency Value after three thermal cycles of the Real Condition Fixture Test at 25 占 폚 to 700 占 폚 / 400 占 폚 consists of fibers of any individual type of nonwoven mat Is at least 1.1 times greater than the elastic value of an equivalent nonwoven mat. Nonwoven mats are useful, for example, in pollution control devices and other thermal applications.

Twin=walled exhaust pipe - comprises two shanks joined by bend and inner pipe has two sections connected by sliding joint in one shank and inner pipe support is in bend

The exhaust gas pipe(2) consists of outer(4) and inner(6) pipes with an insulating air gap inbetween. The pipe(2) has two shanks(18,22) separated by a connecting bend(20) and the inner pipe(6) comprises two sections(12,14) connected by a sliding joint in a first position in the first shank(8). A radial support(26) for the inner pipe(6) is at a second position either in the bend(20) or the second shank. Also claimed is a waste gas pipe(2) with an air gap between the inner pipe sections(12,14). A distance piece fills the gap and has a radially inward facing stop at one end and a radially outward facing stop at the other end. The stops determining axial positions of the pipe sections (12,14) relative to each other. In the mfr. the inner pipe sections (12,14) are connected, inserted into the out pipe(4) and after filling space between them with fluid are bent. The radial support(26) may be inserted before or after bending. In a further process the inner tube sections(12,14) are polygonally calibrated and after insertion into one another are twisted relative to each other until contact is made between the sections(12,14). In another process a distance piece inserted into an air gap between the inner pipe section(12,14) ends is burnt away leaving the joint free to move.

FORBRENNINGSMOTOR

Engine exhaust pipe

엔진배기파이프는 내부파이프(10)와 외부파이프(11)로 이루어지는 2중벽 구조를 가지고 있고, 내부파이프(10)는 소정된틈새(단열층(12))만큼 외부파이프로부터 이격되어 있다. 이 끼워맞춤부분에서 외부파이프(11)는 외부구명(20)을 가지고 있다. 유사하게, 내부파이프(10)는 내부구멍(19)을 가지고 있다. 니플(9)은 외부구멍(20)의 에지주위에서 외부파이프(11)상에 위치되어 외부파이프(11)에 고정된다. 산소센서(22)는 니플(9)에 끼워 맞춤되어 내부파이프(10)의 내부구멍(19)을 통해 뻗는다. 산소센서(22)와 평탄부(10c)사이에 제공되는 시일(24)은 계단부(22a)와 그리고 평탄부(10c)와 미끄럼 가능하게 접촉하여 끼워맞춤부가 내부 및 외부파이프(10,11)사이의상이한 열팽창에 의해 영향을 받지 않도록 한다.

Arrangement for introducing a liquid medium into exhaust gases from a combustion engine

本发明涉及用于将液体介质导入来自内燃机的废气中的设备，包括用于使得废气流动通过的管路（2），由管状壁（8）沿径向方向定界的喷射室（3），用于将液体介质喷射到喷射室中的喷射机构（13），混合导管（14），喷射室具有用于将废气输送到该混合导管的出口（10），旁路导管（15），其具有出口（17），其经由所述出口（17）连接到混合导管，以及端壁（7），其位于喷射室下游端并且将该喷射室与混合导管分界，从而使得喷射室的出口位于端壁的外周。旁路导管的出口位于喷射室的出口附近，以使得经由喷射室的出口流入混合导管中的废气将与经由旁路导管的出口流入混合导管中的废气相撞。

Composite dual tubing

Saddle-ride vehicle

The present invention shortens the time it takes for a catalyst to go from an inactive state to being activated, and also suppresses thermal effects on components that are arranged in the periphery of a catalyst part and suppresses the degradation of the catalyst. A vehicle body cover (100) has a right catalyst cover part (102) and a left catalyst cover part. As seen from the right, the right catalyst cover part (102) covers at least one section of a catalyst part (62). As seen from the right, at least one section of a front end (102a) of the right catalyst cover part (102) is arranged between the catalyst part (62) and a front wheel part (2). The maximum value of the left-right-direction distance of separation between the front end (102a) of the right catalyst cover part (102) and a front end of the left catalyst cover part is smaller than the maximum left-right-direction length of an engine main body (20). When the vehicle body cover (100), the engine main body (20), and an exhaust device (60) are viewed from the front, half or more of the catalyst part (62) is exposed between the front end of the left catalyst cover part and the front end (102a) of the right catalyst cover part (102).

Patent DE8717998U1

Composite dual tubing

A steel tubing and more particularly a composite dual tubing which can be suitably used for an exhaust pipe capable of effectively reducing the radiated noise from the exhaust pipe of automobiles. A metallic dual tubing of the present invention comprises: lugs (20a); lugs (20a) and heat-resistant filler material (24); or, the spacer member (16) and the heat-resistant filler member (17).

Double-shell manifold

The invention relates to an exhaust manifold (12) consisting of: an outer casing (18) comprising an outer shell (22) and a flange (24) which is welded to the outer shell (22) and which is equipped with a surface (24B) that is supported by an engine head and at least one hole (28) which opens onto said support surface (24A); and at least one internal conduit (20) which is disposed in the outer casing (18) and which terminates in a hole (28). The invention is characterised in that: each internal conduit (20) is formed from a ceramic material; and each internal conduit (20) extends through the flange (24) by means of each hole (28) and comprises an extension (32) that extends outside the outer casing (18) towards the exterior and beyond the support surface (24A).

exhaust

Exhaust system for internal combustion engine

本发明涉及一种用于内燃机的排气设备，其中，在该排气设备中设置有至少一个第一和第二废气净化装置，其中，第一废气净化装置沿废气的流动方向设置在第二废气净化装置的上游，并且这两个废气净化装置能够由废气穿流，并且第二废气净化装置能够由废气环流，其中，第一废气净化装置在废气的流动方向上具有用于废气的穿孔，该穿孔经由排气漏斗与第二废气净化装置的流动横截面引导废气地连接。通过排气设备的按照本发明的设计方案，在结构体积相同的情况下可增大第一和第二废气净化装置的有效流动横截面。

Exhaust manifold for an exhaust system of an internal combustion engine

Die Erfindung betrifft einen Abgaskrümmer für eine Abgasanlage eines Verbrennungsmotors mit zumindest einer in einer Außenschale 8 angeordneten Innenschale 4 und einem am Zylinderkopf des Verbrennungsmotors festlegbaren Eintrittsflansch 2. Erfindungsgemäß weist die Innenschale 4 an ihrem eintrittsflanschseitigen Rand 24 einen nach außen umgestellten Flansch 25 auf. Im Eintrittsflansch 2 ist eine taschenartige Aufnahme 26 ausgebildet. Die Innenschale 4 ist mit dem Flansch 25 in der Aufnahme 26 positioniert. Die Außenschale 8 übergreift die Innenschale 4 und ist mit ihrem eintrittsflanschseitigen Rand 27 in der Aufnahme 26 positioniert. Hierbei liegt die Stirnseite 28 des Randes 27 der Außenschale 8 zumindest bereichsweise auf dem umgestellten Flansch 25 der Innenschale 4 an. Die Außenschale 8 ist mit der Aufnahme 26 gefügt. The invention relates to an exhaust manifold for an exhaust system of an internal combustion engine with at least one disposed in an outer shell 8 inner shell 4 and a fixable on the cylinder head of the engine inlet flange 2. According to the invention, the inner shell 4 at its inlet flange side edge 24 an outwardly converted flange 25. In the inlet flange 2, a pocket-like receptacle 26 is formed. The inner shell 4 is positioned with the flange 25 in the receptacle 26. The outer shell 8 engages over the inner shell 4 and is positioned with its inlet flange-side edge 27 in the receptacle 26. Here, the end face 28 of the edge 27 of the outer shell 8 is at least partially on the rearranged flange 25 of the inner shell 4. The outer shell 8 is joined to the receptacle 26.

Modular manifold for automotive and manufacturing processes

Modularer Abgaskrümmer (1) eines Kfz mit mehreren aneinander anschließenden einwandigen Krümmerrohrmodulen (1.1 bis 1.4), mit mindestens einem Motorflansch (2.1 bis 2.4), die über Eingangsstutzen (1.1a bis 1.4a) der Krümmerrohrmodule (1.1 bis 1.4) mit einem Zylinderkopf des Kfz verbindbar sind, wobei mindestens ein als Sammelrohrmodul ausgebildetes, einen Anlagenflansch (1.5) aufweisendes Krümmerrohrmodul (1.3, 1.4) vorgesehen ist, über das der Abgaskrümmer (1) an eine Abgasanlage des Kfz anschließbar ist, wobei das jeweilige Krümmerrohrmodul (1.1 bis 1.4) eine Überschneidungskontur (1.1b bis 1.4b) einer Länge a aufweist, die ein Ineinanderschieben von jeweils zwei Krümmerrohrmodulen (1.1 bis 1.4) über eine Einstecktiefe t zwecks Kopplung gewährleistet, wobei zumindest zwei Krümmerrohrmodule (1.1 bis 1.4) bezüglich der Formgebung gleich sind, wobei das Krümmerrohrmodul (1.1 bis 1.4) jeweils nur einen Eingangsstutzen (1.1a bis 1.4a) aufweist, dadurch gekennzeichnet, dass durch Ausbildung der Länge a der Überschneidungskontur (1.1b bis 1.4b) eine Variation der Einstecktiefe t von mindestens 5 mm bis 100 mm zwecks Anpassung an die Abstände der Auslasskanäle des ...

Method for forming an air gap pipe

A process and an apparatus for forming an air gap pipe are provided. Inner and outer pipes are bent or deformed into comparable configurations such that the inner pipe can be mounted within the outer pipe. The outer pipe then is split longitudinally by a preprogrammed cutting apparatus. The cutting of the outer pipe terminates just short of the complete longitudinal length of the pipe to facilitate rematching later in the process. The cutter includes a follower to trace the actual configuration of the pipe and thereby to offset differences from one pipe to the next. An array of clamps are provided to align the outer pipe halves relative to one another and to facilitate the reattachment.

Exhaust pipe

An object of the present invention is to provide an exhaust pipe that can lower the temperature of exhaust gases when the exhaust gases having a high temperature pass through the exhaust pipe. The exhaust pipe of the present invention, which allows exhaust gases to flow through the exhaust pipe, comprises a base that contains metal and has a cylindrical shape; and a surface-coating layer that contains a plurality of crystalline inorganic materials and an amorphous binder and is formed on the outer peripheral face of the base, wherein the plurality of crystalline inorganic materials are distributed in the surface-coating layer, in an accumulative manner in a thickness direction, and the amorphous binder has an average thickness of 20 μm or less at a location nearer the outer peripheral face of the exhaust pipe than a location of the crystalline inorganic materials.

Catalytic converter

A catalytic converter includes at least one heating element that is configured to disrupt the direction of flow of exhaust gases which contain harmful toxic gases and pollutants and aid in removing and/or reducing said toxic gases and pollutants.

Exhaust emission control device

The disclosed exhaust purification device is provided with: a selective reduction catalyst which causes the NOx contained in exhaust gas to react with ammonia; a urea solution addition means which adds a urea solution to the exhaust gas further upstream from the selective reduction catalyst; and a cylindrical mixing pipe which connects the space from the urea solution addition means to the selective reduction catalyst. A mixer structure is formed by forming an opening in a position in the circumferential direction of the end section of the mixing pipe on the input side, and disposing guide fins so that the exhaust gas is introduced to the opening from the tangential direction of the end section on the input side. The urea solution addition means is disposed in a central position on the end section on the input side and facing the end section on the output side in such a way that the urea solution can be added to the exhaust gas swirl flow by the mixer structure. The opening is formed so as to follow the flow of the swirl flow.

After treatment system for a vehicle

An after treatment system (ATS) for a vehicle having an ATS module includes, fluidly connected in series, an inlet, a Diesel Oxidation Catalysts (DOC), a urea mixer and a Selective Catalytic Reduction (SCR), and an outlet. The inlet is fluidly connected to an output of an engine of the vehicle and the outlet is fluidly connected to an outlet tube of the vehicle. The inlet, DOC, mixer, SCR and outlet are arranged to define a substantial rectangular path of a flow (F) of exhaust gases flowing in the ATS, with the inlet and the outlet being positioned at a same vertex of the substantial rectangular path of the flow (F).

Exhaust purification device

An exhaust purification device in which the difference in thermal expansion between the particulate filter side and the selective reduction type catalyst side can be reliably absorbed without causing deposition of urea. An exhaust purification device has a communication flow path (9) having an S-shaped structure and is constructed so that an aqueous urea solution can be added to the upstream of the communication flow path (9). The communication flow path (9) has a particulate filter (5) and a selective reduction type catalyst arranged parallel to each other such that the entrance ends of the filter and the catalyst face the same direction and such that exhaust gas (3) discharged from the exit end of the particulate filter (5) is turned back in the opposite direction to lead the gas to the entrance end of the adjacent selective reduction type catalyst. The middle of a mixing pipe (10) forming a straight portion of the communication flow path (9) is constructed as a double-walled tube portion (18) where an inner tube (16) and an outer tube (17) are overlapped on each other in an insertable and extractable manner. The tail end of the outer tube (17) is secured to the outer periphery of the inner tube (16), a bellows (19) stretchable and retractable in the axial direction is formed at an appropriate position of the outer tube (17), and a seal ring (20) is fitted on the outer periphery of the tail end of the inner tube (16).

Double-walled exhaust pipe