Verfahren und Vorrichtung zur Verarbeitung von mit Natrium gefüllten Hohlkörpern

Variable Ventilsteuerungsvorrichtung für Brennkraftmaschine

Hollow valve for an internal-combustion engine

The valve cavity is filled with coolant metal, such as sodium, which is liquid at the high operating temperature, and includes an additive tablet, constituted by zirconium, hafnium, yttrium, uranium 238 or mixtures thereof, having a greater affinity for oxygen, nitrogen, hydrogen and carbon in the valve cavity atmosphere than the coolant metal and the alloying elements in the valve walls. The additive thus prevents the reaction of these impurities with the cavity walls to form a thermally insulating barrier layer and forms compounds with low vapour pressures to reduce the gas pressure, and hence gas viscosity, in the valve cavity to promote mixing of hotter and cooler portions of the coolant thus improving the cooling efficiency.

PROCESS OF MANUFACTURING VALVES FOR RECIPROCATING PISTON INTERNAL-COMBUSTION''NGINES AND VALVES SO MANUFACTURED

... 1439230 Making i.c. engine valves; welding by fusion MASCHINENFABRIK AUGSBURGNURNBERG AG 16 Aug 1973 [18 Aug 1972 17 May 1973] 38864/73 Headings B3A and B3R [Also in Division F2] A method of making a valve for an internal combustion engine, the valve having an evacuated inner cavity extending along its stem 101 and partially filled with a heat-conducting substance 111, which when the valve is in use is liquid, wherein two valve parts are provided of which a first part has an open-ended cavity, the heat-conducting substance is introduced in liquid form into the cavity of the first part, the valve parts are cooled to solidify the substance 111, the parts are assembled either before or after the cavity is evacuated and the parts are welded together in a vacuum chamber. The valve stem 101 is welded to the valve disc 107, preferably by electron beam welding, and during welding the stem is cooled to prevent melting of the heat-conducting substance. Cooling is effected by placing copper blocks ...

Salzgefülltes Hohlschaftventil.

Verfahren zur Herstellung von mit einem Wärmeleitmittel gefüllten Auslassventilen für Verbrennungsmotore

Circulating spiral chamber of automatically cleaning is towards sodium valve

Cyclic spiral cavity sodium-filled air valve with spiral blade

Valve with enclave of cooling out of copper

Improvements with the hollow metal bodies for engines or the valves

POPPET VALVE

중공 포펫 밸브

... 밸브 우산부 내의 대직경 중공부의 바닥면측 외주 가장자리부를 직경 확대하여 밸브 페이스부에 접근시킴으로써, 중공 밸브의 내구성을 저하시키지 않고 열기 빼기 효과를 개선한다. 단부에 우산부(14)를 일체적으로 형성한 포펫 밸브의 우산부(14)로부터 축부(12)에 걸쳐 중공부(S)가 형성되고, 중공부(S)에 불활성 가스와 함께 냉각재(19)가 장전된 중공 포펫 밸브(10)로, 우산부(14) 내의 대직경 중공부(S1)의 바닥면측 외주 가장자리부(S1a)를 반경 방향 바깥쪽으로 플랜지 형상으로 직경 확대했다. 중공부(S1) 내의 냉각재(19)의 양이 늘어나고, 또한 냉각재(19)와 밸브 페이스부 사이의 거리가 단축되어, 밸브 우산부(14)의 열기 빼기 효과가 올라간다. 중공부(S1)의 직경 확대된 바닥면측 외주 가장자리부(S1a)는 플랜지 형상으로, 밸브 우산부(14) 전체가 얇게 되지 않아, 밸브(10)의 내구성에 영향을 주지 않는다.

METHOD FOR PRODUCING A HOLLOW ENGINE VALVE

FIRE-WELDED, INTERNALLY COOLED VALVE AND METHOD FOR THE PRODUCTION THEREOF

The invention relates to a method for producing an internally cooled valve (2). Said method comprises the steps of inserting a valve semi-finished product (16) into a die (28, 30), wherein the valve semi-finished product (16) has a valve stem (18) and a valve head (20), wherein the valve semi-finished product (16) further has a recess (22) that extends from the valve stem (18) through the valve head (20) and opens towards the valve head (20), inserting a valve bottom (24) into the die, and fire-welding the valve bottom (24) and the valve semi-finished product (16) in the die (28, 30) under high pressure to form a valve blank (26).

Method for production of valve head portion of hollow engine valve and hollow engine valve

Forming of a valve head portion (1) of a hollow engine valve (V) comprising a material particularly satisfactory in heat resistance is performed by cold forging. On this occasion, the material with excellent heat resistance is worked to form a valve head portion semifinished product (11) having a hollow hole (S11) whose inner diameter (11) is equal to the maximum inner diameter (11) of a hollow hole (S1) of a finished product of the valve head portion (1), and having a diameter-increased section (111) whose maximum outer diameter (12) is equal to the maximum outer diameter (12) of a diameter-increased section (1a) of the finished product. Parts of the valve head portion semifinished product other than a central part to a lower part of the diameter-increased section (111) are necked down by cold forging performed a plurality of times to obtain the finished product of the valve head portion (1). This method of obtaining the finished product is provided by the present invention.

Hollow valve for internal combustion engines

A hollow valve for internal combustion engines, comprising a valve body having a disk, a hollow throat region and a stem component, wherein the valve body is designed in the form a deep-drawn metal part made of austenitic metal. There is a stem end piece welded to the stem component of the valve body and a cover welded to the disk. The valve body, end piece and cover enclose a hollow space extending from the stem end piece into the disk. This valve is considerably lighter in weight than traditional valves, and is capable of lowering the temperature of the valve when the hollow space is filled with a coolant.

Hollow valve for internal combustion engine

Hollow valve for internal combustion engine The hollow valve includes a hollow cavity to reduce the temperature and weight of the valve. The valve consists of three parts (1,2,3) welded to each other and enclosing the hollow cavity (5). The cavity extends from the plate region (13) of the valve body into the valve stem. The valve body from the stem end part to the plate region is in the form of a deep-drawn sheet part of austenite material. It is connected to the shaft end part by welding.

METHOD FOR MANUFACTURING OF ENGINE VALVE HAVING METALLIC SODIUM ENCLOSED THEREIN

PROBLEM TO BE SOLVED: To provide a method for manufacturing an engine valve having metallic sodium enclosed therein, which allows metallic sodium to be easily enclosed inside the engine valve. SOLUTION: The method is provided for manufacturing an engine valve V by sequentially subjecting a stem S having a hollow part H to drawing processing by using a series of dies D1, D2, Dx, Dx+1, and Dn so that the outer and inner diameters of the stem S are miniaturized step-by-step, and that the stem S is thereby molded to a desired size. In the processing, the stem S is subjected to the drawing processing until the inner diameter of hollow part of the stem S reaches a specific size (Steps S11 to S15); metallic sodium Na in the form of a solid block is inserted into the hollow part H of the stem S (Step S16-1); a protective agent P made of solid paraffin or naphthalene is also inserted into the hollow part H of the stem S so as to form a barrier between the metallic sodium Na and the atmosphere (Step ...

NA FILLING HOLLOW ENGINE VALVE MANUFACTURE

PURPOSE: To obtain manufacture for a Na filling hollow engine valve whose inner/outer surface is smoothly at a short time, and which is a low cost compound material. CONSTITUTION: In manufacture for a Na filling hollow engine valve, a shallow hole 005 is formed on one end of a solid narrow diameter round rod 001 having a same diameter as a material of a valve shaft part, in a part which is formed as a valve umbrella part. A pipe is used on a member 006 which is formed as the valve shaft part, the pipe is axially welded on the shallow hole part by means of pressure welding. A material which is formed as the valve umbrella part is formed as a lump part 008 by an up-set forging press, it is umbrella- forged, Na is filled in a pipe, and an axial end seal material 012 is push-pressed. In another method, in manufacture for the Na filling hollow engine valve, a solid round rod having a diameter thicker than the valve shaft diameter of a member which is formed as the valve umbrella part is used ...

Способ заполнения клапанов двигателей внутреннего сгорания натрием

Waermebehandlungsverfahren zur Herstellung von geschweissten, natriumgefuellten Ventilkegeln

Improvements in or relating to hollow head poppet valves and methods of making the same

... 551,788. Valves. THOMPSON PRODUCTS, Inc. Aug. 1, 1941, No. 9853. Convention date, Aug. 30, 1940. [Class 7 (vi)] [Also in Group XXII] A hollow poppet valve is made by welding a cast or forged cap 20, Fig. 2, to a stem portion 21, Fig. 3. The'cap may be cast from corrosion resistant metals, such as nickel, or chromium, or alloys such as those sold under the Registered Trade Marks "Nichrome," "Hastelloy," "Brightray," or "Stellite," or be forged and machined so that the ends of the grain only occur at the face 23. The stem is forged &c. so that the grain ends occur at the face 30 and, if a groove 32 for a seating ring e.g. of the alloy sold under the Registered Trade Mark "Stellite," is desired, some may occur at its edges. Sodium or other coolant C, Fig. 4, may be introduced and the parts 20, 21 clamped together by electrodes 32a, 341, and welded by a surge of high frequency current without oxidation. A seating ring is then welded in the groove 32, if used, so that all the ends of ...

Improvements in or relating to sheathed headed articles, for example poppet valves, and methods of making the same

... 586,934. Brazing. STEVENS, A. H. (Thompson Products, Inc.). Sept. 15, 1944, No. 17701. [Classes 83 (ii) and 83 (iv)] [Also in Group XXVII] Making valves.-A poppet valve or other headed member comprises a body with stem and head portions 22 made of stress-resisting material such as alloy steel and a corrosionresisting head sheath 13 brazed to the head by material 14, and having its periphery connected to the head by a metal bond 23 which also seals the brazing material. In one form, a solid metal billet 10 with a reduced head 11, Fig. 5, is covered first with a thin disc 14 of copper, silver or other brazing metal and then with a cap 13 of corrosion and heat-resisting material such as an alloy of 80 per cent nickel and 20 per cent chromium. The disc may be cupped to fit over the part 11 by the action of pressing on the cap 13 so that the brazing material covers the entire inner surface of the cap. In some cases the bonding metal may be electro-plated on to the cap 13 and part 11. The assembly ...

Method of introducing substances of low melting point into hollow bodies, such as the valve stems of internal combustion engines for heat conducting purposes

... 407,473. Valves. ASPLEY, E., 128, Grange Road, Alvaston, Derby. Dec. 3, 1932, No. 34316. [Class 7 (vi).] In a method of introducing substances of low melting-point into hollow bodies, for example metallic sodium, common salt, &c. into the hollow stems of poppet valves of internal-combustion engines, the displacement of the air contained within the hollow body is effected by the insertion and withdrawal of a rod or the like, instead of withdrawing the air by an inserted pipe as described in Specification 380,571. The Figure shows the hollow valve a, to the open end of which is loosely fitted a funnel c. The required amount of sodium is placed in the funnel and melted. A rod f is then slowly inserted and afterwards withdrawn suddenly, thereby creating a suction which causes some of the melted sodium to enter the hollow stem. The operation is then repeated until the required amount of sodium has been introduced.

ZYLINDERKOPF EINER BRENNKRAFTMASCHINE

The two pipes (3,4) per cylinder are thermally joined to one another and thus hydraulically connected and the cylinder head (2) has two valve seats (5), each ringed in turn by a heat pipe (3) as thermally and hydraulically interconnected. An additional heat pipe (4) rings an injector or igniter arranged in the head center and again is thermally and hydraulically connected to the heat pipes. Pipes (3,4) connect via channel (7) and are cast together with the cylinder head. Each heat pipe (3,4) has its own two venting and filling channels (8a,8b).

PROCEDURE FOR THE PRODUCTION OF A SODIUM-FILLED VALVE AND DARNACH GERGESTELLTES VALVE

COOLED ENGINE VALVE WITH IMPROVED HEAT TRANSFER

Cooled Engine Valve with Improved Heat Transfer An engine valve comprises an elongated stem having a head secured on an end thereof, and a cap secured to the underside of the head. A plurality of circumferentially disposed and radially extending ribs are secured between the head and the cap to define a plurality of inlet and outlet passageways therebetween, and a liquid coolant is circulated through the passageways.

Hollow poppet valve

Novel hollow sodium-filled valve

The invention discloses a novel hollow sodium-filled valve. The novel hollow sodium-filled valve comprises a valve shell and a solid rod part. The forming method of the valve shell comprises the steps that cross wedge rolling is performed on a steel pipe material for preforming; friction welding sealing is performed on the head of a preformed billet; afterwards, a die forging forming technology is performed, so the valve shell is integrally formed. The valve shell comprises a flared hollow disc part and a hollow rod part which are integrally formed. One end of the hollow rod part is welded to the solid rod part through friction welding, and the diameter of the cross section of the solid rod part is equal to the outer diameter of the cross section of the hollow rod part. The disc end face of the hollow disc part is airtight, and an inner cavity is defined by the disc end face of the hollow disc part, the hollow rod part and the solid rod part and is filled with sodium. The novel hollow sodium-filled ...

Process and equipment for the garnishing by an alkaline metal of valves for spark-ignition engines

Valve Body Of A Gas Exchange Valve, Gas Exchange Valve And Internal Combustion Engine

Improvements with the valves for internal combustion engines

Improvements in the coolers for the valves and other bodies

Improvements brought to the valves

COOLED POPPET VALVES FOR INTERNAL COMBUSTION ENGINES

PROCESS OF MANUFACTURING VALVES FOR RECIPROCATING PISTON INTERNAL-COMBUSTION''NGINES AND VALVES SO MANUFACTURED

VALVE OF VEHICLE ENGINE

PURPOSE: A valve of a vehicle engine is provided to perform cooling for the protection of a valve by employing a cooling member by embedded in the valve. CONSTITUTION: After a specific time from the operation of an engine, a head(11) and a stem(12) of a valve are heated by a combustion heat. A metallic sodium(13) having 96deg.C of melting point is melted in a hollow core portion. The liquefied metallic sodium flows in the hollow core portion and exchanges heat in the head and the stem of the valve and a valve guide. Thereby, the valve is cooled efficiently. COPYRIGHT 2000 KIPO ...

METHOD FOR PRODUCING ENGINE VALVE IN WHICH SODIUM METAL IS SEALED

Provided is a method for producing an engine valve (V) by subjecting a stem part (S) having a hollow part (H) to a drawing treatment using a series of dies (D1, D2, Dx, Dx+1, Dn) such that the outer diameter and inner diameter of the stem part (S) become smaller in steps and the stem part (S) is thereby molded to the desired size, whereby, after the stem part (S) has been subjected to the drawing treatment until the inner diameter of the hollow part (H) of the stem part (S) has reached a specific size (steps S11 to S15), sodium metal (Na) in the form of a solid block is introduced to the hollow part (H) of the stem part (S) (step 16-1), and a protective agent(P) made from solid paraffin or naphthalene is also introduced to the hollow part (H) of the stem part (S) such as to form a barrier between the sodium metal (Na) and the atmosphere (step S16-2), after which the stem part (S) is further subjected to a cold drawing treatment (steps S17, S18).

METHOD AND DEVICE FOR MANUFACTURING METALLIC-SODIUM-FILLED ENGINE VALVE

The present invention is provided with: an umbrella part metallic sodium insertion device (130) for inserting rod-shaped metallic sodium (Na) into a hollow part (H) of a hollow valve (V); a melting device (140) for melting the metallic sodium (Na) in the hollow part (H) by inserting a push rod (142a) from an opening (O) into the hollow part (H) of the hollow valve (V), in which the metallic sodium (Na) has been inserted by the device (130), and, while pushing the rod-shaped metallic sodium (Na) in the hollow part (H), heating the umbrella part (A) to a temperature at which the metallic sodium (Na) is melted; a stem part cooling device (150) for cooling a stem part (S) of the hollow valve (V), in which the metallic sodium (Na) has been melted by the melting device (140), to a temperature lower than the temperature at which the metallic sodium (Na) is melted; and a stem part metallic sodium insertion device (170) for inserting rod-shaped metallic sodium (Na) into the hollow part (H) which ...

METHOD FOR PRODUCING ENGINE VALVE CONTAINING METALLIC SODIUM, AND METALLIC SODIUM SUPPLY APPARATUS

This method for producing an engine valve containing metallic Na is a method for producing an engine valve that: has a flared valve section (13), a valve shaft section (14), and a valve shaft end section (15), of which at least the flared valve section (13) and the valve shaft section (14) are made to be hollow; and has metallic Na in the interior of the engine valve (11). The method for producing the engine valve containing metallic Na has a first metallic Na filling step (S11) for filling the interior of the flared valve section (13) in the engine valve (11) with metallic Na (12a) particles, and a second metallic Na filling step (S12) for supplying the interior of the valve shaft section (14) in the engine valve (11) with rod-shaped metallic Na.

INTERNALLY COOLED VALVE FOR INTERNAL COMBUSTION ENGINES, AS WELL AS METHOD AND DEVICE FOR THE PRODUCTION THEREOF

The invention relates to a method and a device for producing an internally cooled inlet or outlet valve (4) for internal combustion engines, as well as the valve produced using the method or the device. The method comprises providing a work piece comprising a cylindrical shaft and a cylindrical hole running from a valve shaft end in the axial direction. The method also comprises deforming the valve shaft end via form rolling the cylindrical shaft to a smaller diameter, wherein a diameter of the cylindrical hole is reduced wherein the cylindrical hole remains intact. The method further comprises deforming the section of the work piece connected to the valve shaft to form a valve head via form rolling.

Cooling device for valves and the like

Cooling-capsule-filled valve

COOLING STRUCTURE OF ENGINE VALVE

PROBLEM TO BE SOLVED: To provide a shaft hole for lightening on the side opposite to the side connected to the valve spring of a valve stem with the end section on the latter side kept solid in an engine valve in which the stem is made hollow and a sodium bar is enclosed within it. SOLUTION: In the engine valve to which the center section of a valve plate wherein a conic valve face is provided at an end of the stem is connected, the shaft hole opening on the side of a combustion chamber penetrated the valve plate is provided in the stem, and the sodium formed into a bar-shape is inserted into the shaft hole and is sealed hermetically by a closing lid to lighten and cool the engine valve. COPYRIGHT: (C)2004,JPO ...

Выпускной клапан для двигателя внутреннего сгорания

EINEN HOHLRAUM AUFWEISENDES GASWECHSELVENTIL

VERFAHREN ZUR HERSTELLUNG EINES VENTILS

Zylinderkopf einer Brennkraftmaschine

Zylinderkopf (2) einer Brennkraftmaschine mit zumindest zwei Hubventilen (6) pro Zylinder (10), welche im geschlossenen Zustand jeweils auf einem Ventilsitz (5) aufliegen, wobei zumindest ein Ventilsitz (5) von einem ringförmigen Wärmerohr (3, 4) umgeben ist, dadurch gekennzeichnet, dass zumindest zwei Wärmerohre (3, 4) miteinander thermisch verbunden und strömungsverbunden sind.

Variable Ventilsteuerungsvorrichtung für Brennkraftmaschine

Poppet valve for use in cylinder of internal combustion engine has cavity in stem, extending into head, and containing fluid and spiral strip insert

The valve is of the usual shape. The hollow bore (5a) may be closed at the top of the valve stem (3) and a plug (4a) may be fitted in the valve head (2) to retain the fluid. Alternatively the valve head may be permanently closed and the plug may form the top end of the stem with a flat bearing area for the valve tappet. Fluid, especially liquid sodium, inside the hollow stem may slosh up and down as the valve opens and closes, transferring heat from the hot head to the cold end of the valve stem. A spiral strip of metal is inserted in the bore, to impart a swirling motion to the fluid, and improve the heat transfer.

HOLLOW VALVE FOR AN INTERNAL-COMBUSTION ENGINE

Cooled intake valve for an internal combustion engine

The intake valve has a hollow valve stem 18 and valve head 19 containing a vaporizable liquid. A heat exchanger 36 is provided at the end of the valve stem 18 to condense liquid which has been vaporized by heat transferred to the valve head 19. This ensures that the portion of the valve in the mixture intake system is maintained at a temperature which will prevent the transference of heat to the intake mixture charge from the valve and thus reduce heating of the charge. Wire mesh 34 acts as a wick to return condensed vapour to the head chamber 31. ...

Improvements in or relating to valves for internal combustion engines

... 523,824. Valves. POSSENTI, A., and RIETTI, E. Jan. 16, 1939, No. 1434. Convention date, Feb. 23, 1938. [Class 7 (vi)] In poppet valves cooled by the provision in the hollow interior of metallic sodium or an alloy with a low melting point and high boiling point, a movable member is also provided in the hollow interior so as to be set in motion by the movement of the valve and cause a circulation of-the liquid metal. Fig. 1 shows a valve with a movable tube 3 arranged in the hollow stem containing the sodium, the tube being moved to and fro by the insertion of the valve, and being guided in its movement by rings 7, 8. The tube is shaped at its upper end as shown in Fig. 2, and is formed with holes 5, 6 at each end for the flow of the liquid metal. The end of the stem is closed by a plug 14 formed with bores 15, 16 allowing for expansion of the sodium. In a modification, the guide rings 7, 8 are also formed with tapered holes.

Improvements in or relating to cooled hollow articles

... 700,562. Valves, regulating temperature in. THOMPSON PRODUCTS, Inc. April 6, 1951, No. 8024/51. Drawings to Specification. Class 135. [Also in Group XXVII] In a hollow article such as a poppet valve containing a coolant such as sodium, the wall of the coolant chamber is provided with a coating containing zinc and/or silver and adapted to be set by the coolant. The coating may be applied by any suitable process such as electrodeposition or hot dipping. A suitable coating substance is brass containing 69 per cent copper, 30 per cent zinc and 1 per cent tin. Specification 563,071, [Group XXVII], is referred to.

PROCEDURE FOR THE PRODUCTION OF A SODIUM-FILLED VALVE AND DARNACH MANUFACTURED VALVE

HOLLOW POPPET VALVE

A hollow poppet valve is provided with a step at a predetermined axial position of a diametrically small valve stem cavity formed in a valve stem of the valve so as to cause turbulence to occur in a coolant charged in the valve stem cavity The valve stem cavity is communicated with a valve head cavity formed in a valve head which is integrally formed at one end of the valve stem, so that the cavities constitutes a cavity that extends from inside the valve head into the stem. The cavity is partially loaded with a coolant. The valve stem cavity has a diametrically larger first portion near the stem end and a diametrically smaller second portion near the valve head. The step is formed at the boundary of the first and the second portion of the valve stem cavity. The cavity is loaded with the coolant to a level above the step. In response to a reciprocal motion of the valve the coolant is moved in the valve stem cavity across the step, giving rise to turbulence in the neighborhood of the step ...

Automatically cleaning formula is towards sodium valve

Air valve with tapered sodium-filled cavity

Ultra light engine valve

Metallic hollow valve for an internal combustion engine of a utility motor vehicle

INTERNAL COMBUSTION ENGINE WITH FITTING OF INLET VALVES

Valve Body Of A Gas Exchange Valve, Gas Exchange Valve And Internal Combustion Engine

Corps (11) de soupape pour une soupape (10) d'échange de gaz d'un cylindre d'un moteur à combustion interne, le corps (11) de soupape pouvant être amené à porter contre un siège (12) de soupape de la soupape d'échange de gaz pour fermer la soupape d'échange de gaz, et le corps (11) de soupape pouvant, pour ouvrir la soupape d'échange de gaz, être détaché du siège (12) de soupape de la soupape d'échange de gaz. Le corps (11) de soupape est formé en une multiplicité de parties et comporte une première partie (13) de disque de soupape interagissant avec le siège (12) de soupape et une deuxième partie (15) de disque de soupape qui est en liaison complète avec la première partie (13) de disque de soupape et fait face à une chambre de combustion (16) du cylindre, un espace creux (17) servant au moins au refroidissement de la deuxième partie (15) de disque de soupape étant formé entre la première partie (13) de disque de soupape et la deuxième partie (15) de disque de soupape. Valve body (11) for a gas exchange valve (10) of a cylinder of an internal combustion engine, wherein the valve body (11) can be brought to bear against a valve seat (12) the gas exchange valve for closing the gas exchange valve, and the valve body (11) for opening the gas exchange valve to be detached from the valve seat (12) of the gas valve; gas exchange. The valve body (11) is formed in a plurality of portions and has a first valve disc portion (13) interacting with the valve seat (12) and a second valve disc portion (15) which is in contact therewith. complete with the first valve disc portion (13) and facing a combustion chamber (16) of the cylinder, a hollow space (17) serving at least for cooling the second valve disc portion (15) being formed between the first valve disc portion (13) and the second valve disc portion (15).

A method for manufacturing valves with sodium filling

Valve with mushroom with cooling for engines

Improvements with the valves and manufactoring process of the aforesaid valves

Manufactoring process of an exhaust valve filled with sodium or agents analouges of thermal conductivity for combustion engines

Improvements with the coolers for the valves

Hollow poppet valve for exhaust system

중공 엔진 밸브의 제조 방법

제조 공정의 간소화 및 가공 정밀도의 향상을 도모할 수 있는 중공 엔진 밸브의 제조 방법을 제공한다. 그 때문에, 밸브 우산부 (10a) 와 중공축부 (10b) 에 걸쳐 중공공 (10c) 이 형성된 밸브 본체 (10) 를 구비하는 중공 엔진 밸브 (1) 의 제조 방법에 있어서, 밸브 본체 (10) 의 소재가 되는 중실 환봉 (11) 을 1 회의 열간 단조에 의해 반완성품 (12) 으로 성형하고, 이 반완성품 (12) 에 대해 로터리 스웨이징 가공을 실시함으로써, 당해 반완성품 (12) 을 반완성품 (13) 으로 성형하고, 이 반완성품 (13) 에 대해 네킹 가공을 실시함으로써, 당해 반완성품 (13) 을 밸브 본체 (10) 로 성형하고, 이 밸브 본체 (10) 에 있어서의 중공축부 (10b) 의 단부에 축단 봉지 부재 (20) 를 접합한다. A manufacturing method of a hollow engine valve capable of simplifying a manufacturing process and improving machining accuracy is provided. Therefore, in the method of manufacturing the hollow engine valve 1 including the valve body 10 having the hollow portion 10c formed between the valve umbrella portion 10a and the hollow shaft portion 10b, The semi-finished product 12 is molded into a semi-finished product 12 by molding the solid round bar 11 as a raw material into a semi-finished product 12 by one hot forging and performing a rotary swaging process on the semi-finished product 12 13 and the kneading process is applied to the semi-finished product 13 to form the semi-finished product 13 into the valve body 10 and the hollow shaft portion 10b of the valve body 10, The shaft sealing member 20 is joined to the end of the shaft sealing member 20.

METHOD FOR PRODUCING METALLIC-SODIUM-FILLED ENGINE VALVE

Disclosed is a method—for producing an engine valve (V) filled with metallic sodium (Na) within by means of: forming a stem section (S), which has a hollow section (H), at an intended size by successively drawing the stem section (S) using dies (D1, D2, Dx, Dx+1, Dn) in a manner so as to causing the size of the outer diameter and the inner diameter of the stem section (S) to contract in a stepwise fashion; and inserting metallic sodium (Na) into the hollow section (H) of the stem section (S)—wherein after drawing the stem section (S) until the inner diameter of the hollow section (H) of the stem section (S) has become a prescribed size (steps S11-S15) and then inserting the block-shaped solid metallic sodium (Na) into the hollow section (H) of the stem section (S) (step S16), the stem section (S) is further drawn (steps S17 and S18).

Temperature control in an ultra light engine valve

An ultra light weight poppet valve which includes elements for controlling the temperature of the valve during operation. The valve is of the type which is formed as an elongated cup having a flared open end to which a cap is fixed and in which an extremely thin-wall section is maintained all the way to a closed tip end. Temperature control elements include multiple thin-walled elements in nesting relationship to define multiple interior chambers, and a plug member received within the stem portion of the valve and maintained in place by inwardly deflecting the stem portion.

Internally cooled valve with inertial pump

A internally cooled poppet valve (2) with inertial pump (4) includes a valve body (20) having a valve head (22) and a valve stem (24). The valve body (20) has a closed cavity (26), in which a cooling fluid (28) is disposed. The inertial pump (4) is disposed in the valve body (20), which moves the cooling fluid (28) in the cavity during operation.

METALLIC HOLLOW VALVE FOR A COMBUSTION ENGINE OF A UTILITY MOTOR VEHICLE

Die Erfindung betrifft ein metallisches Hohlventil (1) für eine Brennkraftmaschine eines Nutzfahrzeugs. Das metallische Hohlventil (1) umfasst einen rohrförmigen Ventilschaft (2), welcher in einen Ventilkopf (3) mit gegenüber dem Ventilschaft (2) vergrößerten Außendurchmesser übergeht, wobei der Ventilschaft (2) und der Ventilkopf (3) einen gemeinsamen Hohlraum (4) begrenzen. Der Ventilschaft (2) weist einen Außendurchmesser (dA) von mehr als 7 mm und einen Innendurchmesser (dI) von mindestens 4,5 mm auf.

METHOD FOR PRODUCING HALLOW ENGINE VALVE

Provided is a method for producing a hallow engine valve which can easily produce a hallow engine valve in which strength is improved and weight is reduced. Specifically, provided is a method for producing a hallow engine valve which involves gradually reducing the size of the outer diameter and inner diameter of a hallow shaft of a semi-finished product (10a), sequentially inserting the hallow shaft into a plurality of molding holes (M1, M2', M(m-1), Mm, M(n-1), Mn) having different hole shapes so as to gradually extend the length of the hallow shaft, and forming the hallow shaft into a predetermined shape by sequentially performing said drawing process, wherein the semi-finished product (10a) is subjected to heat treatment such that the hardness thereof is equal to or less than a predetermined hardness, and the maximum thickness (t2') between the hallow shaft and an umbrella portion connected to the bottom edge of the hallow shaft is formed to be thicker than the thickness (t2) of the ...

PRODUCTION OF VESSEL FOR SEALING LIQUID

PURPOSE: To maintain a vacuum state in a vessel for sealing a liquid and to seal and held surely the liquid by sealing airtightly the aperture of the vessel by electron beam welding in a vacuum atmosphere in the stage of producing said vessel. CONSTITUTION: Refined and deaerated liquid 2 is fed into a vessel body 1 and the vessel is dipped in a liquid tank 4, then the liquid 2 in the body 1 cools to solidify as a cryogenic liquid 4a is stored in the tank 4. When the body 1 contg. the solidified liquid 2 is inserted into the insertion hole 10a of a liquid tank 6, the body 1 is partly immersed in the cryogenic liquid 6a in the tank 6 and the liquid 2 in the body 1 is maintained in the solidified state. The air in a vacuum chamber 5 is then sucked by a vacuum pump 11 to maintain a high vacuum in the chamber 5. The remaining part in the body 1 except the part contg. the liquid 2 is evacuated to a high vacuum in this state. An electron beam is thereafter irradiated to the aperture 3 of the body ...

ПОЛЫЙ ТАРЕЛЬЧАТЫЙ КЛАПАН

Изобретение может быть использовано в двигателях внутреннего сгорания, где используются тарельчатые клапаны. Полый тарельчатый клапан (10) имеет головку (14), образованную за одно целое с одной концевой стороной стержня (12). Клапан (10) содержит полую часть (S1), расположенную со стороны головки (14), и полую часть (S2), расположенную со стороны стержня (12). Полая часть (S1) и полая часть (S2) отделены друг от друга перегородкой (15), выполненной в районе галтельной части (13) между головкой (14) клапана и стержнем (12) клапана. Полая часть (S1), расположенная со стороны головки (14), образована посредством перегородки (15), сферического углубления корпусной части головки (14) и закрывающего элемента, образующего нижнюю поверхность полой части (S1), расположенной со стороны головки (14). На обращенной к камере сгорания стороне головки (14), в полой части (S1), расположенной со стороны головки, выполнена теплоизолирующая часть, содержащая газ или материал, имеющий более низкую теплопроводность ...

Выпускной клапан для двигателя внутреннего сгорания

Охлаждаемый клапан двигателя внутреннего сгорания

Изобретение позволяет повысить интенсивность охлаждения клапана путем стабилизации режима пузырькового кипения жидкости. В герметичной полости 2 клапана, частично заполненной охлаждающей жидкостью, свободно размещена засыпка из стальных шариков 4, Последние под действием силы тяжести располагаются на внутренней поверхности тарелки 5. Наличие засыпки препятствует сращиванию паровых пузырей и образованию сплошной паровой пленки на внутренней поверхности тарелки, которая ухудшает охлаждение клапана. 1 ил. СЛ ...

Ultraleichtes Ventil für Brennkraftmaschine

Verfahren zur Verbesserung der Kuehlung, insbesondere eines Ventils, dessen Hohlkoerper eine Menge von Quecksilber enthaelt

Ventilsitzring für eine Hubkolbenmaschine, sowie Verfahren zum Herstellen eines solchen Ventilsitzrings

Die Erfindung betrifft einen Ventilsitzring für eine Hubkolbenmaschine, mit wenigstens einem ersten Teilbereich (24), durch welchen in Einbaulage des Ventilsitzrings (16) wenigstens ein von einem Kühlmedium (18) durchströmbarer Kühlkanal (20) zumindest teilweise begrenzt ist, und mit wenigstens einem sich in radialer Richtung des Ventilsitzrings (16) nach innen an den ersten Teilbereich (24) anschließenden zweiten Teilbereich (26), wobei der zweite Teilbereich (26) als ein aus einem ersten Werkstoff gebildeter Träger (28) und der erste Teilbereich (24) als eine aus einem vom ersten Werkstoff unterschiedlichen zweiten Werkstoff gebildete passivierende Schicht (30) ausgebildet ist, mit welcher eine in der Einbaulage dem Kühlkanal (20) zugewandte Seite (32) des Trägers (28) zumindest teilweise durch Sintern versehen ist.

Kuehlung fuer Ventile oder sonstige Teile von Kraftmaschinen u. dgl.

VORRICHTUNG ZUR KUEHLUNG VON VENTILEN, INSBESONDERE VON AUSLASSVENTILEN FUER BRENNKRAFTMASCHINEN

Hohlventil in einer Brennkraftmaschine

Improvements in Cooling Devices for Valves and other Devices.

... 122,171. Domestic Engineering Co., (Assignees of Kettering, C. F.). Jan. 10, 1918, [Convention date]. Cooling. - Valves which are subject to heat, and comprise a hollow stem containing a small quantity of mercury which is vaporized and condensed to cool the valve &c., are coated with amalgam or a metal on that portion of the hollow stem which contacts with the mercury. The Figure shows an internalcombustion engine valve having detachable cooling fins 32 and a head 22 containing a small quantity of mercury 40. The interior of the valve is coated with mercury amalgam or with a metal having a higher heat conductivity than the metal of the valve. An amalgam may itself be introduced through the stem of the valve or a metal, e.g. brass, may be inserted which will form an amalgam with the mercury in the head. The inner portion 23 of the valve head is welded to the outer portion 22 at 25 and the stem is welded to the head at 24. Specifications 122,186 and 131,662, [both in Class 7 (vi), Internal-combustion ...

COOLED INTAKE VALVE FOR AN INTERNAL COMBUSTION ENGINE

VERFAHREN ZUR HERSTELLUNG EINES NATRIUMGEFUELLTEN VENTILS UND DARNACH GERGESTELLTES VENTIL

HOLLOW POPPET VALVE

Provided is a hollow poppet valve for which the heat-drawing effect is improved by providing a stepped part for generating turbulent flow at a prescribed location of a small-diameter hollow part (S2) of the valve shaft part in the axial direction. This hollow poppet valve (10) has an umbrella part (14) integrally formed on one end of a shaft part of the poppet valve, with a hollow part (S) being formed from the umbrella part (14) to the shaft part (12) of the poppet valve, and the hollow part (S) being filled with a cooling material (19). The small-diameter hollow part (S2) within the shaft part (12) communicates with a large-diameter hollow part (S1) inside the umbrella part (14), and the inner diameter of a hollow part (S21) of the small-diameter hollow part, which is closer to the shaft end, is greater than that of a hollow part (S22), which is closer to the umbrella part, thereby providing a stepped part (17) in the small-diameter hollow part (S2), and the coolant material (19) fills ...

COOLED ENGINE VALVE WITH IMPROVED HEAT TRANSFER

Valve with hollow stem filled with salt

Method for Production of Valve Head Portion of Hollow Engine Valve and Hollow Engine Valve

Forming of a valve head portion () of a hollow engine valve (V) comprising a material particularly satisfactory in heat resistance is performed by cold forging. On this occasion, the material with excellent heat resistance is worked to form a valve head portion semifinished product () having a hollow hole (S) whose inner diameter (φ) is equal to the maximum inner diameter (φ) of a hollow hole (S) of a finished product of the valve head portion (), and having a diameter-increased section () whose maximum outer diameter (φ) is equal to the maximum outer diameter (φ) of a diameter-increased section () of the finished product. Parts of the valve head portion semifinished product other than a central part to a lower part of the diameter-increased section () are necked down by cold forging performed a plurality of times to obtain the finished product of the valve head portion (). This method of obtaining the finished product is provided by the present invention. 1. A method for production of a valve head portion of a hollow engine valve , in which the hollow engine valve has a hollow shaft portion , and the valve head portion comprising a material having heat resistance comparable to or better than heat resistance of a material for the hollow shaft portion , the valve head portion has a valve head portion hollow hole opening on a side welded to the hollow shaft portion , the valve head portion hollow hole is formed to have an increased diameter in a diameter-increased section of the valve head portion , and a maximum inner diameter of the valve head portion hollow hole is larger than a maximum outer diameter of the hollow shaft portion ,the method comprising:a first step of producing a valve head portion semi-finished product by working the material having the heat resistance comparable to or better than the heat resistance of the material for the hollow shaft portion to form the valve head portion semi-finished product,in which the valve head portion semi-finished ...

METHOD FOR MANUFACTURING VALVE TRAIN PARTS USING METAL POWDER INJECTION MOLDING

Disclosed is a method for manufacturing a plurality of valve train parts using metal powder injection molding, comprising: obtaining a raw material for injection molding by mixing a metal powder and a binder; forming a formed body by injecting the obtained raw material for injection molding into a mold of a valve train part shape; solvent extracting the formed body; forming a sintered body by debinding and sintering the solvent extracted formed body; sizing processing the sintered body; vacuum carburizing the sizing processed sintered body; and polishing the vacuum carburized sintered body. 1. A method for manufacturing a plurality of valve train parts using a metal powder injection molding comprising:obtaining a raw material for injection molding by mixing a metal powder and a binder;forming a formed body by injecting the obtained raw material for injection molding into a mold of a valve train part shape;solvent extracting the formed body;forming a sintered body by debinding and sintering the solvent extracted formed body;sizing processing the sintered body;vacuum carburizing the sizing processed sintered body; andpolishing the vacuum carburized sintered body.2. The method for manufacturing the plurality of valve train parts using metal powder injection molding according to claim 1 , wherein claim 1 , in obtaining the raw material for injection molding claim 1 , the metal powder of about 93% by weight and the binder of about 7% by weight is mixed.3. The method for manufacturing the plurality of valve train parts using metal powder injection molding according to claim 2 , wherein the metal powder comprises: nickel (Ni) about 2% by weight claim 2 , molybdenum (Mo) about 0.5% by weight claim 2 , carbon (C) about 0.25% by weight and the remaining percent by weight of iron (Fe) of the entire composition.4. The method for manufacturing the plurality of valve train parts using metal powder injection molding according to claim 1 , wherein claim 1 , in forming a sintered ...

METHOD OF MANUFACTURING A VALVE FOR AN INTERNAL COMBUSTION ENGINE

A method of manufacturing a valve () is provided, in which an intermediate valve product having a generally disk-shape valve head is formed by a die unit (). The valve head is then machined to have a proper thickness and a tapered face on the periphery of the disk-shape valve head. The valve head is repeatedly forged in secondary forging by means of a die unit () equipped with a die () and a press punch () while angularly displacing the tapered face relative to the die () through a predetermined angle. Since the die () has protruding pressing sections and grooves () along the circumference of the die, a uniformly deformed and hardened valve face () is formed on the valve head. 1. A method of manufacturing a valve for an internal combusition engine , adapted to form a valve face on a periphery of the valve that comes into contact with a valve seat of the internal combustion engine , by creating radial slip deformations in the valve face of the intermediate valve product made of a heat resisting alloy , utilizing a die unit having:a die equipped with pressing protrusions, arranged inside and along the circumference thereof, for forming the valve face, anda punch for pressing the front end of a valve head of the intermediate valve product, 'wherein the die is provided with a multiplicity of grooves spaced apart from each other at equal angular intervals in the circumfrential direction thereof, each groove crossing an associated one of the pressing protrusions; and', 'the method characterized by utilizing the die'}wherein the intermediate valve product and the die unit are rotated relative to each other through a predetermined angle in synchronism with the punch in operation.2. The method according to claim 1 ,wherein the intermediate valve product is pushed at one end of a valve stem thereof by an ejector pin so as to retain the valve head of the intermediate valve product off the pressing protrusions of the die when the punch is raised to a predetermined upward ...

Hollow Exhaust Poppet Valve

In a hollow exhaust poppet valve including a fillet increasing in diameter toward a leading end, a stem, and a head and having a coolant within a hollow part formed from the head to the stem, the stem includes a first stem part on a base end side, and a second stem part integrated with the first stem part via a step part and integrated with the fillet, and the hollow part includes a first hollow part formed inside the first stem part, and a second hollow part formed inside the second stem part, the fillet, and the head in such fashion as to have a constant inner diameter greater than the first hollow part and formed so as to be continuous with the first hollow part via a tapered part or a curved part. 1. A hollow exhaust poppet valve including a stem and a head integrated via a fillet that increases in diameter toward a leading end and having coolant within a hollow part formed from the head to the stem , whereinthe stem includesa first stem part on a base end side, and a second stem part integrated with the first stem part via a step part, integrated with the fillet, and having a wall thickness and an outer diameter larger than the first stem part, and whereinthe hollow part includesa first hollow part formed inside the first stem part, anda second hollow part formed inside the second stem part, the fillet, and the head in such fashion as to have a constant inner diameter larger than the first hollow part and formed so as to be continuous with the first hollow part via a connecting portion.2. The hollow exhaust poppet valve according to claim 1 , wherein the second hollow part has a shape of a plurality of hollow parts different in inner diameter continuously arranged from a base end part to a leading end part in ascending order of inner diameter.3. The hollow exhaust poppet valve according to claim 2 , wherein the connecting portion is one among a plurality of connecting portions by way of which the plurality of hollow parts different in inner diameter are ...

INTERNALLY COOLED VALVE WITH INERTIAL PUMP

A internally cooled poppet valve () with inertial pump () includes a valve body () having a valve head () and a valve stem (). The valve body () has a closed cavity (), in which a cooling fluid () is disposed. The inertial pump () is disposed in the valve body (), which moves the cooling fluid () in the cavity during operation. 1. An internally cooled poppet valve , comprising: a valve body having a valve head and a valve stem , wherein the valve body comprises a closed cavity , in which a cooling fluid is disposed , and including an inertial pump disposed in the valve body operative to move the cooling fluid in the cavity during operation.2. The internally cooled poppet valve according to wherein the cavity forms at least one closed circuit.3. The internally cooled poppet valve pump according to claim 1 , wherein the cooling fluid is compressible.4. The internally cooled poppet valve according to claim 1 , wherein the cooling fluid is incompressible.5. The internally cooled poppet valve according to claim 1 , wherein the inertial pump comprises at least one pump body claim 1 ,6. The internally cooled poppet valve according to wherein the inertial pump further comprises at least one control body which controls an intake/discharge of cooling fluid to or from the pump body.7. The internally cooled poppet valve according to claim 6 , wherein the at least one pump body is disposed in the at least one control body.8. The internally cooled poppet valve according to claim 7 , wherein a frictional engagement element is further disposed on the inertial pump which places at least one pump body in frictional engagement with the at least one control body.9. The internally cooled poppet valve according to claim 6 , wherein the pump has a greater working stroke than a working stroke of the at least one control body.10. The internally cooled poppet valve according to claim 6 , wherein the valve body and/or the at least one pump body and/or the at least one control body is provided ...

Multiple Parts Reed Valve and Method of Manufacturing

An improved membrane valve and method for manufacturing such membrane valve. The improved membrane valve can be used for transferring fluids or gases in hermetic or semi-hermetic compressors, including a method and system for manufacturing a membrane valve and a membrane valve with applications for use in several motors, particularly in hermetic or semi-hermetic compressors which use, as a refrigeration fluid, an appropriate type of gas thus promoting the refrigeration physical affect. A body and a membrane of the membrane valve are produced from substantially thin metallic plates separately in accordance to an available process and can be subjected to rounding in order to eliminate live corners, and then juxtaposed thus composing the valve, with the above mentioned membrane on one side, fitted to the body which is fixed through a connection process and, on the other side, left free to oscillate. 111-. (canceled)12. A membrane valve comprising:a. a planar body having a reed opening;b. a planar membrane positioned within said reed opening of said planar body in a coplanar relationship with said body; and,c. a connection arrangement for connecting said planar membrane to said planar body, said connection arrangement including 1) an extension member, a recess or combinations thereof on said planar body, and 2) an extension member, a recess or combinations thereof on a rear portion of said planar membrane, (A) said extension member on said planar body forming a compression fit and connection with said recess on said planar membrane, (B) said extension member on said planar membrane forming a compression fit and connection with said recess on said planar body, or combinations thereof, said connection arrangement allowing said planar membrane to pivotally move about a transverse axis, which is coplanar with said planar body near said first end, an edge of a peripheral edge of said planar membrane and an edge of said reed opening define a gap therebetween.13. The membrane ...

Method for producing a welded cavity valve

A method for producing a cavity valve is provided. The method includes providing a valve body which has a cavity in the interior. The valve body has a circular opening having an opening edge surface on a bottom side. A circular valve cover with a cover edge surface is provided. Inductive heating of at least one of the opening edge surface or the cover edge surface takes place and then welding the valve body to the valve cover by friction welding of the opening edge surface to the cover edge surface.

METHOD FOR FILLING WITH METALLIC SODIUM

Provided is a method for filling a stem-side hollow area of an engine valve with metallic sodium. The method includes injecting melted metallic sodium into a cylinder having a larger diameter than an inner diameter of the hollow area of the engine valve, forming a solidified metallic sodium rod having a substantially uniform structure in the cylinder, inserting the metallic sodium into the hollow area of the engine valve through a nozzle having a small diameter, and sealing the engine valve. 15-. (canceled)6. A method for filling a hollow area of a hollow engine valve with metallic sodium , the method comprising:injecting melted metallic sodium into a cylinder having a larger diameter than an inner diameter of the hollow area of the engine valve under a directional solidification condition, at a speed slightly faster than a speed at which a droplet solidifies, and in a form in which no discontinuity occurs;forming a solidified metallic sodium rod having a substantially uniform structure in the cylinder;inserting metallic sodium into the hollow area of the engine valve through a nozzle shaped die having a small diameter while keeping the uniform structure of the metallic sodium rod;cutting the inserted metallic sodium; andsealing the engine valve.7. The method for filling with metallic sodium according to claim 6 , wherein the melted metallic sodium is injected into the cylinder with a boundary of the metallic sodium in the cylinder kept in a semi-solidified condition.8. The method for filling with metallic sodium according to claim 6 , wherein the melted metallic sodium is injected into the cylinder by dripping.9. The method for filling with metallic sodium according to of claim 6 , wherein an inner diameter of the cylinder is within a range of 20 mm to 50 mm claim 6 , a temperature of the metallic sodium is within a range of 180° C. to 250° C. claim 6 , and an injection speed is within a range of 150 g/min to 300 g/min.10. A method for purifying metallic sodium ...

METERING VALVE ASSEMBLY AND METHOD OF ASSEMBLY THEREOF

A valve assembly includes a body including an inlet port, an outlet port, and a flow passage extending therebetween. The flow passage includes a plurality of valve seats in a stepped arrangement between the inlet port and the outlet port. The valve assembly further includes a valve stem positioned within the flow passage. The valve stem includes at least one shaft and a poppet disk positioned at one end of the at least one shaft, and at least one reed petal coupled to the at least one shaft. The poppet disk is engageable with a first valve seat of the plurality of valve seats, and the at least one reed petal is engageable with a second valve seat of the plurality of valve seats. 1. A valve assembly comprising:a body comprising an inlet port, an outlet port, and a flow passage extending therebetween and comprising a plurality of valve seats in a stepped arrangement between said inlet port and said outlet port; anda valve stem positioned within said flow passage and comprising at least one shaft, a poppet disk positioned at one end of said at least one shaft, and at least one reed petal coupled to said at least one shaft, wherein said poppet disk is engageable with a first valve seat of said plurality of valve seats, and said at least one reed petal is engageable with a second valve seat of said plurality of valve seats.2. The valve assembly in accordance with claim 1 , wherein said valve stem further comprises a bias member configured to apply a force to said at least one shaft in a closing direction.3. The valve assembly in accordance with claim 1 , wherein said poppet disk and said at least one reed petal engages with said respective valve seat of said plurality of valve seats in a closed valve position.4. The valve assembly in accordance with claim 1 , wherein said valve stem is configured to progressively unseat from said body during valve opening.5. The valve assembly in accordance with claim 1 , wherein said at least one reed petal comprises at least one ...

HOLLOW POPPET VALVE

A hollow poppet valve () having an improved heat transfer capability is provided. The valve has an internal cavity (S), extending from within a valve head () into a stem () of the valve, is loaded with a coolant () together with an inert gas. The coolant in the valve head () is stirred by swirl flows of the coolant generated during reciprocal motions of the valve. A multiplicity of swirl-forming protrusions are formed on at least on one of the bottom and the ceiling of the valve head cavity (S) in such a way that swirl flows (F F) of coolant are generated by the protrusions in the valve head cavity (S) during reciprocal motions of the valve to thereby stir the coolant in the circumferential direction of the cavity (S). 1. A hollow poppet valve , comprising:a stem;a valve head integrally formed at one end of the stem, andan internal cavity that extends from inside the valve head into the stem, the internal cavity loaded with a coolant together with an inert gas,wherein the internal cavity has a diametrically large valve head cavity formed in the valve head and a diametrically small linear stem cavity formed in the stem in communication with a central region of the valve head cavity, andwherein a plurality of swirl-forming protrusions are formed on at least one of a bottom or a ceiling of the valve head cavity, the swirl-forming protrusions being positioned at substantially equal intervals in a circumferential direction of the valve head cavity, wherein each of the protrusions has a sloping face inclined in the circumferential direction to generate a swirl flow of the coolant in the valve head cavity around a central axis of the valve during a reciprocal motion of the valve in a direction along the central axis.2. The hollow poppet valve according to claim 1 , wherein swirl-forming protrusions are provided on the bottom and the ceiling of the valve head cavity and the sloping faces of the protrusions are inclined in the same circumferential direction.3. The hollow ...

INTERNALLY COOLED VALVE HAVING A VALVE BOTTOM, AND METHOD FOR THE PRODUCTION THEREOF

A method for manufacturing an internally cooled valve (), includes providing a valve body () having a valve stem () that ends in a valve head (). The valve body () has a cavity () that is open toward the valve head () and with a valve base element () by friction welding the valve base element () to the valve head (). The valve bottom element () is preferably a sintered component. 1. A method for manufacturing an internally cooled valve , comprisingproviding a valve body having a valve stem that ends in a valve head,wherein the valve body has a cavity that is open toward the valve head,providing a valve base element, andclosing the cavity with the valve base element by friction welding the valve base element to the valve head,whereinthe valve base element and/or the valve body have/has an engagement structure with which the valve base element and/or the valve body are/is centrally clamped, and/or a torque is transmitted to the valve base element and/or to the valve body,and wherein thevalve base element is fabricated as a green compact or brown compact by metal powder injection molding and sintered and wherein the valve base element is provided with a cooling rib structure and/or flow-influencing structure on a surface facing the cavity.2. The method according to claim 1 , wherein the friction welding is carried out as inductive friction welding.3. The method according to claim 1 , further comprising at least partially filling the cavity with a coolant before the cavity is closed by friction welding.4. The method according to claim 1 , wherein the engagement structure is subsequently removed and/or ablated.5. The method according to claim 1 , wherein the valve base element and the valve body have a welding surface contour claim 1 , which in the friction welding operation produces a weld expulsion in the cavity in a desired shape of a cooling rib.6. The method according to claim 5 , wherein an outer portion of the weld expulsion is subsequently removed.7. An ...

Hollow engine valve and manufacturing method therefor

The present invention provides a hollow engine valve achieving high durability while suppressing an increase in manufacturing cost, and a manufacturing method therefor. A manufacturing method for a hollow engine valve comprises: a step of forming, by forging, a solid round bar as a material of a valve main body into a valve main body intermediate member provided with a semifinished product valve head portion corresponding to a valve head portion and a solid stem portion corresponding to a valve stem portion; a step of performing cutting process with respect to the valve main body intermediate member across the solid stem portion and the semifinished product valve head portion for forming a semifinished product hollow hole with a bottom corresponding to a hollow hole, thereby forming the valve main body intermediate member into a valve main body semifinished product provided with the semifinished product valve head portion and a semifinished product valve stem portion; and a step of performing necking process with respect to the valve main body semifinished product for squeezing the semifinished product valve stem portion step by step, thereby reducing the diameter of the semifinished product valve stem portion and increasing the length of the stem of the semifinished product valve stem portion, to form the valve main body semifinished product into the valve main body.

METHOD FOR PRODUCING A HOLLOW VALVE FOR INTERNAL COMBUSTION ENGINES

A method for producing a valve body of a hollow valve includes providing a workpiece blank or semi-finished product, spin extruding the workpiece to produce a preform having a cup with a hollow shape formed by the cup wall. A hollow valve produced by this method is also provided. 111-. (canceled)12. A method for producing a valve body of a hollow valve , comprising the following steps:providing a workpiece blank;spin extruding the workpiece to create a preform, which has a cup comprising a hollow mold formed by the cup wall;flow forming of the preform after the spin extrusion to provide a reduced shaft diameter, wherein,there is a radial and an axial offset between at least three flow forming rollers during the flow forming step, wherein a radial distance of the flow forming rollers from a central axis is different, wherein a first of the flow forming rollers first machines the workpiece, said first flow-forming roller having a largest radial distance from the central axis, followed by another second flow forming roller having a second-largest radial distance from the central axis.13. The method according to claim 12 , whereinthe spin extruding stop is carried out by means of a molding die, which is pushed against the workpiece with an axial force, and whereinthe at least three flow forming rollers are pushed onto the workpiece with a radial force.14. The method according to claim 13 , whereinthe preform has a valve head/plate and a valve shaft comprising a shall diameter, which is reduced during flow forming compared to the valve plate.15. The method according to claim 14 , whereinthe workpiece is received in a workpiece holder at a spindle and rotates around a longitudinal axis of the holder, and the molding die rotates synchronously to the spindle.16. The method according to claim 15 , whereinthe at least three flow forming rollers and the molding die synchronously carry out an axial movement.17. The method according to claim 12 , wherein the method is carried ...

PRECISION FORMING METHOD OF HIGH-EFFICIENCY AND NEAR-NET HOLLOW VALVE BLANK OF ENGINE

A precision forming method of a high-efficiency and near-net hollow valve blank of an engine is provided, wherein the precision performing is realized by the cross wedge rolling mold, under the rolling the metal tubing for the valve deforms, with a middle part sunken and two ends elongating, the middle part forms a stem part of a hollow valve, the two ends form disk parts to be machined, and the connection sections between the disk parts and the stem part form neck parts having arced concave faces and a frustoconical lateral face in structure, achieving better consistency among the acquired hollow valve blanks. The disk part of each acquired hollow valve preformed blank is machined by the die-forging forming mold that is matched with the disk structure of the manufactured hollow valve, the hollow valve preformed blank is directly placed in the cavities of the die-forging forming mold for forging. 1. A precision forming method of a high-efficiency and near-net hollow valve blank of an engine , comprising:Step 1: manufacturing a cross wedge rolling mold and a die-forging forming mold;Step 2: heating a metal tubing for a valve to a rolling temperature;Step 3: rolling the metal tubing for the valve that is heated to the rolling temperature by the cross wedge rolling mold to make the metal tubing for the valve change in outside diameter and elongate along an axial direction thereof to form a eudipleural hollow valve blank, wherein a symmetric line for the eudipleural hollow valve blank is vertical to an axis thereof, and the hollow valve blank has a middle part as a stem part and two ends as disk parts, and connection sections between the stem part and the disk parts as neck parts of the hollow valve blank;Step 4: segmenting the hollow valve blank along the symmetric line of the hollow valve blank to form a first hollow valve preformed blank and a second hollow valve preformed blank, both of which are the same in structure, where each of the first hollow valve preformed ...

METHOD FOR MANUFACTURING A BLOCK FORGED SWING CHECK VALVE BODY WITH A FULLY ENCAPSULATED SEAT RING

A block forged swing check valve body includes a fully encapsulated seat ring. The swing check valve body includes a through hole and a chamber having a shelf portion defined by a D-shaped passageway. The shelf portion overlies an annular shoulder that encapsulates the valve seat. Methods for the manufacturing and use thereof are also provided. 1. A method of manufacturing a swing check valve body comprising:block forging a one-piece body having opposite ends, opposite sides, a top and a bottom;machining a through hole having a first minimum diameter and extending along a first axis between the opposite ends, wherein the through hole defines a flow passageway;machining a chamber having a second minimum diameter and extending downwardly from the top along a second axis, wherein the first and second axes are orthogonal, and wherein the chamber comprises a bottom defined by a floor separating the chamber from the through hole;machining a D-shaped passageway through the floor along the second axis between the chamber and the through hole, wherein the D-shaped passageway comprises a linear wall and a curved wall opposite the linear wall, and wherein floor comprises a shelf portion overlying the through hole;machining an annular shoulder having a third minimum diameter greater than the first minimum diameter and extending along the first axis under the shelf portion, wherein the annular shoulder is coaxial with the through opening; andsecuring a valve seat in the annular shoulder such that the valve seat is not moveable along the first axis, wherein at least a portion of the valve seat underlies the shelf portion.2. The method of wherein the valve seat has a tapered width.3. The method of wherein block forging the one-piece body comprises block forging a rectangular prism.4. The method of wherein securing the valve seat in the annular shoulder further comprises welding the backside of the valve seat to the body.5. The method of wherein the annular shoulder is a first ...

PROCESS FOR MANUFACTURNIG AN INTERNALLY COOLED VALVE HAVING A COOLING STRUCTURE, AND VALVE MANUFACTURED BY SAID METHOD

The invention relates to a process for manufacturing an internally cooled valve, said process involving providing an externally at least partly cylindrical semifinished product (), creating or increasing the depth of an at least partly cylindrical cavity in the semifinished product () in a hot-working procedure using a male die such that a valve blank is formed; during the hot-working procedure, a recess on an end face of the male die forms a structure on the bottom of the cavity. 111-. (canceled)12. A method for producing a valve blank for an internally cooled valve , comprising providing a semifinished product having an at least partially cylindrical exterior , and creating an at least partially cylindrical cavity in the semifinished product by heat forming , using a stamp , thus producing a valve blank , wherein the hot forming encompasses backward extrusion , wherein a structure is formed on a base of the cavity during the hot forming via a recess at n end face of the stamp.13. The method for producing a valve blank according to claim 12 , wherein the structure includes cooling ribs that extend in a circular or star shape.14. The method for producing a valve blank according to claim 12 , wherein the structure includes pins claim 12 , cones claim 12 , or truncated cones that act as cooling elements.15. The method for producing a valve blank according to claim 12 , wherein the structure includes blades that are able to set a coolant in a valve into rotation.16. The method for producing a valve blank according to claim 12 , wherein a valve head is formed onto the valve blank during the hot forming.17. A method for manufacturing an internally cooled valve claim 16 , wherein after the valve head is formed according to claim 16 , a diameter of the valve blank next to the valve head is reduced in the axial direction in order to form a valve stem.18. The method for manufacturing an internally cooled valve according to claim 17 , wherein the valve stem is formed by ...

HOLLOW POPPET VALVE AND MANUFACTURING METHOD THEREFOR

A poppet valve, in particular a hollow poppet valve, includes: a valve stem; a valve body having along a longitudinal axis, a first end with a neck portion to which the valve stem is coaxially arranged and having along a longitudinal axis a second end with a first conical contact face portion, the valve body including a cavity with a first opening towards the first end and a second opening towards the second end; and a valve cap coaxially arranged to the valve body on the second end for closing the second opening, the valve cap having a second conical contact face portion to form together with the first conical contact face portion a valve head contact face. 1. A poppet valve , in particular a hollow poppet valve , comprising:a valve stem;a valve body having along a longitudinal axis, a first end with a neck portion to which the valve stem is coaxially arranged and having along a longitudinal axis a second end with a first conical contact face portion, the valve body comprising a cavity with a first opening towards the first end and a second opening towards the second end; anda valve cap coaxially arranged to the valve body on the second end configured to close the second opening, the valve cap having a second conical contact face portion to form together with the first conical contact face portion a valve head contact face.2. The poppet valve according to claim 1 , wherein both the first and second conical contact face portion comprise a circumferential groove portion to form together a circumferential face groove claim 1 , andwherein a layer of seat facing material is arranged in the circumferential face groove.3. The poppet valve according to claim 1 , wherein the valve cap is welded to the valve body claim 1 , which weld is arranged between the first and second conical contact face portions.4. The poppet valve according to claim 1 , wherein the valve cap comprises a cylindrical upright wall claim 1 , which extends into the second opening of the cavity and is ...

SYSTEM AND METHOD OF COOLING VALVE WITH MATERIAL IN CAVITY

A system includes a reciprocating engine, the reciprocating engine includes a poppet valve having a first valve end and a second valve end. The poppet valve includes a valve head having the first valve end. The valve head may open and close a fluid passageway within the reciprocating engine. The poppet valve also includes a stem extending from the valve head and having a first length. The stem has the second valve end and the second valve end is substantially opposite the first valve end. The poppet valve also includes a cavity aligned with a centerline axis of the poppet valve. The cavity includes a first region disposed within the valve head and a second region disposed within the stem, and the second region has a second length that is shorter than the first length. The poppet valve further includes a metal alloy disposed within the cavity. The metal alloy is in a liquid-phase during operation of the reciprocating engine and may transfer heat from the valve head to the stem. 1. A valve for a cylinder head of a reciprocating engine , comprising:a first valve end and a second valve end;a valve head having the first valve end;a stem extending from the valve head and having a first length, wherein the stem has the second valve end and the second valve end is substantially opposite the first valve end;a cavity aligned with a centerline axis of the valve, wherein the cavity comprises a first region disposed within the valve head and a second region disposed within the stem, and the second region has a second length shorter than the first length along the centerline axis; anda metal alloy disposed within the cavity, wherein the metal alloy is configured to transfer heat from the valve head to the valve stem.2. The valve of claim 1 , wherein the metal alloy comprises a melting point between approximately 90 degrees Celsius (° C.) and approximately 250° C.3. The valve of claim 1 , wherein the metal alloy comprises a thermal conductivity greater than 25 watt per meter per ...

METHOD FOR THE PRODUCTION OF HOLLOW CHAMBER VALVES

Disclosed is a method for the production of a valve body of a hollow chamber valve, said method comprising: providing a bowl-shaped semi-finished product having an annular wall, which surrounds a hollow chamber, and a bottom portion, followed by a lengthening of the wall and a final reducing of an outer diameter of the annular wall in order to obtain a predetermined valve shaft outside diameter of a valve that is to be produced. Further disclosed is a hollow chamber valve produced by means of said method. 110-. (canceled)11. A method for manufacturing a valve body of a hollow valve , comprising the following steps:providing a bowl-shaped semi-finished product, the semi-finished product having an annular wall that surrounds a cylindrical cavity of the semi-finished product, and a base section;forming a valve had from the base section;lengthening the annular wall in an axial direction by forming, wherein a mandrel is inserted into the cavity during the forming;reducing an outer diameter of the annular wall by rotary swaging to obtain a valve stem of the finished valve boy having a predetermined outer diameter (D);wherein multiple mandrels having different diameters are used during the lengthening of the annular wall.12. The method according to claim 11 , wherein the provision of the bowl-shaped semi-finished product includes:providing an at least partially cylindrical blank; andforming the bowl-shaped semi-finished product from the blank.13. The method according to claim 12 , wherein the forming of the bowl-shaped semi-finished product takes place via a hot forming process comprising backward can extrusion or forging.14. The method according to claim 11 , wherein the forming of the valve head takes place via a hot forming process comprising backward can extrusion or forging.15. The method according to claim 11 , wherein the lengthening of the annular side wall takes place via rotary swaging with a mandrel claim 11 , or ironing via a mandrel.16. The method according to ...

METHOD FOR PRODUCING A HOLLOW VALVE WITH AN OPTIMISED INTERIOR STEM GEOMETRY FOR INTERNAL COMBUSION ENGINES

A method for producing a valve body of a hollow valve with optimised interior stem geometry includes a preform with a valve plate and a tubular wall surrounding a cavity. Flow forming the tubular wall over a flow-forming mandrel, which is inserted into the cavity to enlarge a length of the tubular wall. An interior area of the tubular wall is embossed with a structure either due to the fact that the flow-forming mandrel is a structuring mandrel having a surface structure, or alternatively, because the method includes a further step of reducing an outer diameter of the tubular wall by swaging or drawing and ironing over a structuring mandrel. Furthermore, a hollow valve is produced by this method. 115-. (canceled)16. A method for producing a valve body of a hollow valve with optimized interior stem geometry , comprising the steps:providing a preform with a valve head and a tubular wall surrounding a cylindrical cavity;flow forming the tubular wall over a mandrel, which is interested into the cavity, to enlarge a length of the tubular wall,wherein multiple forming rollers are used in the flow forming process;a structuring mandrel having a non-cylindrical surface structure, and wherein the mandrel is the multiple forming rollers are offset radially and axially to each other during the flow forming process.17. The method according to claim 16 , wherein providing the preform comprises:providing a bowl-shaped semi-finished product, wherein the semi-finished product has the tubular wall surrounding the cylindrical cavity of the semi-finished product and has a bottom section; andforming the valve head from the bottom section.18. The method according to claim 17 , wherein the valve head is formed impact extrusion or forging.19. The method according to claim 17 , wherein providing the bowl-shaped semi-finished product comprises:providing an at least partially cylindrical blank; andforming the bowl-shaped semi-finished product from the blank.20. The method according to claim ...

POPPET VALVE FOR AN INTERNAL COMBUSTION ENGINE

A poppet valve has an elongated stem that is configured to extend along a longitudinal axis. The poppet valve further includes a valve body that is disposed laterally with respect to the longitudinal axis and located in a spaced apart relation with an end of the elongated stem. The valve body has a pair of opposing faces disposed co-axial with the longitudinal axis of the elongated stem. The poppet valve also includes at least two arcuately shaped appendages depending downwardly from the end of the elongated stem and extending away from the longitudinal axis of the elongated stem. An end of each appendage is disposed in abutment with an annular region defined on one of the opposing faces of the valve body, a perimeter of the annular region being larger than a perimeter of the elongated stem measured about the longitudinal axis. 1. A poppet valve comprising:an elongated stem extending along a longitudinal axis;a valve body disposed laterally with respect to the longitudinal axis and located in a spaced apart relation with an end of the elongated stem, the valve body having a pair of opposing faces disposed co-axial with the longitudinal axis of the elongated stem; andat least two arcuately shaped appendages depending downwardly from the end of the elongated stem and extending away from the longitudinal axis of the elongated stem, wherein an end of each appendage is disposed in abutment with an annular region defined on one of the opposing faces of the valve body, and wherein a perimeter of the annular region is larger than a perimeter of the elongated stem measured about the longitudinal axis.2. The poppet valve of further comprising a void defined between each of the at least two arcuately shaped appendages and the valve body claim 1 , the void being configured to include the longitudinal axis therein.3. The poppet valve of claim 1 , wherein a volume of the poppet valve is solid throughout.4. The poppet valve of claim 1 , wherein each of at least two arcuately ...

CAVITY VALVE WITH OPTIMIZED SHAFT INTERIOR GEOMETRY, AND METHOD FOR PRODUCING SAME

A hollow valve having optimized interior stem geometry, whose valve stem has surface-enlarging structuring on an inner surface is provided. Also provided is a method for manufacturing a valve body of such a hollow valve, wherein the method comprises: providing a bowl-shaped semi-finished product having an annular wall that surrounds a cavity, and having a base section, followed by lengthening the wall with an inserted, structured mandrel, and lastly, reducing an outer diameter of the annular wall without a mandrel to obtain a predetermined valve stem outer diameter of a valve to be manufactured. 116-. (canceled)17. A method for manufacturing a valve body of a hollow valve having optimized interior stem geometry , comprising the following steps:providing a bowl-shaped semi-finished product, the semi-finished product having an annular wall that surrounds a cylindrical cavity of the semi-finished product, and a base section;forming a valve head from the base section;lengthening the annular wall in an axial direction by forming, wherein a mandrel is inserted into the cylindrical cavity during the forming, wherein an outer surface of the mandrel has structuring;reducing an outer diameter of the annular wall by rotary swaging without a mandrel to obtain a valve stem of the finished valve body having a predetermined outer diameter (D), and whereinmultiple mandrels having different diameters and having successively decreasing diameters are used during the lengthening of the annular wall, wherein at least the last used mandrel has an outer surface with structuring.18. The method according to claim 17 , wherein the provision of the bowl-shaped semi-finished product includes:providing an at least partially cylindrical blank; andforming the bowl-shaped semi-finished product from the blank.19. The method according to claim 18 , wherein the forming of the bowl-shaped semi-finished product takes place via a hot forming process comprising backward can extrusion or forging.20. The ...

METHOD OF MANUFACTURING A VALVE FOR AN INTERNAL COMBUSTION ENGINE

A method of manufacturing a valve for an internal combustion engine, comprises: (i) a primary step of forging a bulging portion at one end of a rod material to form a generally disk-shape valve head of the valve having a tapered periphery; (ii) an thickness adjustment step of machining an excessively thick portion of the valve head; and (iii) a secondary step of forging a peripheral region of the valve head to create radial slip deformations therein to form a valve face of the valve head. In the step of thickness adjustment, only the front end of the disk-shape valve head is machined without harming dense grain flow lines induced in the tapered face () in the primary forging while advantageously saving the valve material and reducing thickness adjustment time. In the secondary forging, the hardness of the valve face is further enhanced. 1. (canceled)2. A method of manufacturing a valve for an internal combustion engine , comprising:a step of primary forging in which a bulging portion at one end of a rod material is forged to form a generally disk-shape valve head of the valve by means of a primary forging die unit having a first die and a first punch;a step of adjusting the thickness of the disk-shape valve head formed in the step of primary forging by machining an excessively thick portion thereof; anda step of secondary forging in which a periphery of the disk-shape valve head is forged to create therein radial slip deformations by means of a secondary forging die unit having a second die and a second punch, the periphery being associated with a valve face that comes into contact with a valve seat of the internal combustion engine,the method characterized in thatthe primary die unit is provided on the die thereof for forging the valve head with a peripheral taper forming face for forming a tapered face associated with the valve face; anda predetermined tapered face that corresponds to the valve face is formed in the step of primary forging along the periphery of ...

METALLIC HOLLOW VALVE FOR AN INTERNAL COMBUSTION ENGINE OF A UTILITY MOTOR VEHICLE

A metallic hollow valve for an internal combustion engine of a utility vehicle may include a tubular valve stem and a valve head merging into the valve stem. The valve head may have an outer diameter that is enlarged compared to the valve stem. The valve stem and the valve head may together delimit a hollow space. The valve stem may have an outer diameter of more than 7 mm, for example between 8 mm and 11 mm. The valve stem may have an inner diameter of at least 4.5 mm, for example between 5 mm and 7 mm. 1. A metallic hollow valve for an internal combustion engine of a utility vehicle , comprising:a tubular valve stem and a valve head merging into the valve stem, the valve head having an outer diameter that is enlarged compared to the valve stem;the valve stem and the valve head together delimiting a hollow space;wherein the valve stem has an outer diameter of more than 7 mm; andwherein the valve stem has an inner diameter of at least 4.5 mm.2. The metallic hollow valve according to claim 1 , wherein the valve head includes a head base facing away from the valve stem claim 1 , and wherein the head base has a base thickness between 2 mm and 5 mm.3. The metallic hollow valve according to claim 1 , wherein the valve stem has a wall thickness between 1.5 mm and 5 mm.4. The metallic hollow valve according to claim 1 , further comprising a valve neck arranged between valve stem and valve head claim 1 , wherein the valve neck has a wall thickness between 1.5 mm and 5 mm.5. The metallic hollow valve according to claim 1 , wherein the valve head is at least one of forged and electrochemically machined.6. The metallic hollow valve according to claim 1 , wherein the hollow space is at least partly filled with a fluid.7. An internal combustion engine for a utility vehicle claim 1 , comprising:at least one cylinder including a combustion chamber having an air inlet and an exhaust outlet; a tubular valve stem and a valve head merging into the valve stem;', 'the valve stem and the ...

POPPET VALVE AND METHOD FOR MANUFACTURING SAME

A method for manufacturing a poppet valve from an intermediate valve products is disclosed. The intermediate valve products have an intermediate valve head ′ with a pressing protrusions . A peak of the pressing protrusions is located in a normal direction X of the seat surface N, which is positioned on a normal line X passing a reference point P set on a line segment K connecting a base point P in an inner side and a base point P in an outer side of the seat surface N; a position of the reference point P is set such that a relation between a length L from the base point P to the reference point P and a length L from the base point P to the reference point P meets a formula of L/L≦0.5. 1. A method for manufacturing a poppet valve , in which a valve head provided in one end of a valve stem in a longitudinal direction has a seat surface in a direction where an outer diameter is widened toward the one end , by forging an intermediate valve product of the poppet valve , wherein:the intermediate valve product of the poppet valve is provided with a large diameter part as the valve head in the one end of the valve stem in the longitudinal direction, wherein the large diameter part is provided with a pressing protrusions in a region serving as the seat surface after forging, the pressing protrusions having a peak positioned in a region in a normal direction of the seat surface on a basis of the seat surface of the forged valve head;in a sectional view, the peak of the pressing protrusions is positioned on a normal line passing a reference point set on a virtual line connecting a base point in an inner diameter side and a base point in an outer diameter side of the seat surface; and{'b': 1', '2, 'claim-text': {'br': None, 'i': L', 'L, '1/2≦0.5\u2003\u2003(1),'}, 'as viewed in an axial direction of a center line of the valve stem, a position of the reference point is set such that a relation between a length L from the base point in the inner diameter side to the reference ...

COMPOSITE SANDWICH PANELS FOR OILFIELD VALVE

An oilfield valve having a body defining a throughbore and configured for controlling flow through the throughbore, wherein the valve has a disc connected to the body and movable between an open position and a closed position, and further wherein the disc has a top surface and a bottom surface, and defines a perimeter, wherein the disc is composed of a composite material having a facesheet and a core material adhered to the facesheet. 1. An oilfield valve having a body defining a throughbore and configured for controlling flow through the throughbore , comprising:a disc connected to the body and movable between an open position and a closed position, wherein the disc has a top surface and a bottom surface and defines a perimeter, and further wherein the disc is composed of a composite material; a facesheet; and', 'a core material adjacent to the facesheet., 'wherein the composite material comprises'}2. The apparatus according to claim 1 , wherein the facesheet comprisesa top facesheet forming the top surface of the disc; anda bottom facesheet forming the bottom surface of the disc.3. The apparatus according to claim 2 , wherein the core material is located between the top facesheet and the bottom facesheet and wherein the core material is adhered to the top facesheet and the bottom facesheet with a layer of adhesive.4. The apparatus according to claim 3 , wherein the bottom surface and the perimeter of the disc is covered in a coating.5. The apparatus according to claim 4 , wherein the coating is selected from the group consisting of an elastomeric claim 4 , a plastic claim 4 , and a composite material.6. The apparatus according to claim 5 , wherein the body has a seating surface adjacent to the disc when the disc is in the closed position.7. The apparatus according to claim 6 , wherein the seating surface houses a seal configured for sealing against the disc in the closed position.8. The apparatus according to claim 1 , wherein the facesheet comprises a matrix ...

AUTOMATIC RING VALVE SHUTTERS FOR AUTOMATIC RING VALVES AND METHOD FOR MANUFACTURING SAID SHUTTERS

An automatic ring valve comprising a valve seat provided with a plurality of gas flow passages arranged according to at least one annular row, at least a shutter comprising at least one ring-shaped portion for selectively closing and opening the gas flow passages, wherein the ring-shaped portion of the shutter comprises a fiber-reinforced matrix, at least one contrasting member for contrasting an opening movement of ring-shaped portion of the shutter, wherein the ring-shaped portion of the shutter comprises continuous fibers, at least some of the fibers developing for at least 360° of the annular development of the ring-shaped portion. 1. An automatic ring valve comprising:a valve seat provided with a plurality of gas flow passages arranged according to at least one annular row,at least a shutter comprising at least one ring-shaped portion for selectively closing and opening the gas flow passages, wherein the ring-shaped portion of the shutter comprises a fiber-reinforced matrix, andat least one contrasting member for contrasting an opening movement of ring-shaped portion of the shutter,wherein the ring-shaped portion of the shutter comprises continuous fibers, at least some of the fibers developing for at least 360° of the annular development of the ring-shaped portion.2. The automatic ring valve according to claim 1 , wherein the matrix has a layered structure.3. The automatic ring valve according to claim 1 , wherein the fiber-reinforced matrix is formed by wound portions of at least one flexible element comprising the continuous fibers developing in the direction of the continuous flexible element claim 1 , wherein the wound portions are bonded together.4. The automatic ring valve according to claim 1 , wherein the continuous fibers surround the central axis of the ring-shaped portion of the shutter.5. The automatic ring valve according to claim 1 , wherein the continuous fibers are arranged in a substantially helical development about the axis of the ring- ...

INTERNAL COMBUSTION ENGINE WITH AT LEAST ONE HOLLOW-HEAD VALVE

An internal combustion engine may include at least one cylinder and at least one hollow-heat valve. The at least one hollow-head valve may include a valve shaft and a valve head, and may be guided in a valve shaft guide. The engine may also include at least one valve seat ring on which the valve head sealingly lies when the at least one hollow-head valve is closed. The engine may additionally include a valve shaft seal with at least two seal lips and oil disposed between the valve shaft and the valve shaft guide. The at least one valve seat ring may be composed of a sintered metal including infiltrated copper. The valve shaft may include one of a chromium-containing coating and a boron carbide-containing coating. 1. An internal combustion engine , comprising:at least one cylinder;at least one hollow-head valve including a valve shaft and a valve head, the at least one hollow-head valve guided in a valve shaft guide;at least one valve seat ring on which the valve head sealingly lies when the at least one hollow-head valve is closed;a valve shaft seal with at least two seal lips; andoil disposed between the valve shaft and the valve shaft guide;wherein the at least one valve seat ring is composed of a sintered metal including infiltrated copper; andwherein the valve shaft includes one of a chromium-containing coating and a boron carbide-containing coating.2. The internal combustion engine according to claim 1 , wherein at least one of the valve shaft guide and the at least one valve seat ring have a higher thermal conductivity than the valve shaft and the valve head.3. The internal combustion engine according to claim 1 , wherein a cavity is disposed in the at least one hollow-head valve via at least one of drilling and electrochemical machining.4. The internal combustion engine according to claim 3 , wherein the cavity extends from the valve shaft into the valve head.5. The internal combustion engine according to claim 3 , wherein the cavity is at least partially ...

METHOD OF MANUFACTURING A HOLLOW POPPET VALVE

A method of manufacturing a hollow poppet valve capable of storing a large amount of a coolant in an internal cavity (S) of the valve, which cavity extends from within its valve head () into a valve stem portion () and is filled with a coolant () together with an inert gas. The method comprises steps of: (i) forming a coolant rod () of a predetermined length from a linear clayish coolant () to extruded from an extruder (); (ii) inserting a coolant-rod into a cavity formed in an intermediate valve product () through its opening; and (iii) sealing the opening of the hole (S). In the step (ii), a coolant-rod may be divided into a shorter and thicker multiple pieces () for divisional insertion into the cavity (S) in multiple times, so that they have little interference with the inner periphery of the cavity (S). 17-. (canceled)8. A method of manufacturing a hollow poppet valve having an internal cavity that extends from within a valve head into a stem portion of the hollow poppet valve and is filled with a coolant , the method comprising:a coolant-rod forming step for extruding from a nozzle of an extruder linear clayish coolant and cutting the linear coolant into coolant rods of a predetermined length;a coolant-rod inserting step for inserting the coolant rod into a hole of an intermediate valve product that corresponds to the internal cavity of the hollow poppet valve, through an open end of the hole; anda sealing step for sealing the open end of the hole,the method characterized by comprising;a multiplicity of the coolant-rod insertion steps for inserting more than one coolant-rods into the hole of the intermediate valve product; anda coolant-rod pressurizing step for pressurizing each of the coolant rods in the hole with a pressing rod following insertion of each coolant rod.9. The method according to claim 8 , wherein the coolant-rod pressurizing step is adapted to determine existence of the coolant-rods in the hole and propriety in length of the coolant rods on ...

ENGINE VALVE FORGING SYSTEM

An engine valve forging system includes a molding forging die having a circular hole stem molding portion continued to a tip end of a head type molding portion, to mold an engine valve by extrusion-forging a material from the head type molding portion to the stem molding portion by an upper die, and a stem guide forging die which is coaxially disposed to communicate with a tip end of the stem molding portion, and has a guide portion for a stem portion of an engine valve extruded from the stem molding portion, and a plurality of stem curve restraining portions having a shape gradually tapering toward a central shaft line from a rear end portion to a tip end portion are formed continuously along the central shaft line of the guide portion in the guide portion, to be capable of manufacturing high-precision engine valves with less stem curve. 16.-. (canceled)7. An engine valve forging system comprising:a molding forging die for engine valve which has a circular hole shaped stem molding portion which is formed so as to be continued to a tip end of a head type molding portion, and extrusion-forges a material on the head type molding portion to the stem molding portion by an upper die; anda stem guide forging die which communicates with a tip end of the stem molding portion, and is disposed coaxially with the stem molding portion, and which has a stem curve restraining portion for a stem portion of an engine valve extruded from the stem molding portion, whereinthe stem curve restraining portion has a shape gradually tapering toward a central shaft line of the stem curve restraining portion over the entire area from a rear end portion to a tip end portion which is continued to a tip end of the stem molding portion.8. The engine valve forging system according to claim 7 , wherein a plurality of the stem curve restraining portions are formed continuously along the central shaft line of the stem curve restraining portions.9. The engine valve forging system according to claim 7 ...

APPARATUS FOR PRODUCING A HOLLOW POPPET VALVE

A method of producing a hollow valve comprises the step for forming material having a blind hole along its axis, the step for extruding the material in a shaping hole in a die downward and the step for lowering a lower part of a pin to an upper part of a smaller-diameter portion of the shaping hole to allow the material to plastically flow downward through a gap between the lower part of a pin and the smaller-diameter portion of the shaping hole thereby molding a primary intermediate of the hollow valve having a stem and a head at the upper end of the stem through which a hole is formed. 111-. (canceled)12. An apparatus for producing a hollow poppet valve , the apparatus comprising a first press that comprises:a die having a shaping hole that comprises a larger-diameter portion into which material can be inserted, a squeezing portion which communicates with the larger-diameter portion and tapers downward, and a smaller-diameter portion which communicates with the squeezing portion to form a stem of the poppet valve;a ram that rises and lowers above the die;a punch attached to the ram, a lower end of the punch being capable of moving into the larger diameter portion of the shaping hole in the die; anda pin disposed to move up and down in a vertical guide hole along an axis of the punch and connected to the ram, a smallest portion at a lower end projecting from the punch downward to put into the smaller-diameter portion of the shaping hole.13. The apparatus of claim 12 , further comprising pressing means for forcing the punch downward to press the primary intermediate downward until the pin moves up.14. The apparatus of claim 13 , wherein the pressing means comprise a compression spring.15. The apparatus of claim 12 , further comprising a second press disposed near the first press claim 12 , the second press comprising:a die holder;a ram above the die holder to rise and lower;a die in a recess in the die holder having a shaping hole; anda punch in a recess in the ram ...

HIGHLY-VISCOUS SUBSTANCE DISPENSING METHOD AND HIGHLY-VISCOUS SUBSTANCE DISPENSING APPARATUS

Each time a highly-viscous substance is extruded, a variation in weight of each cut piece of the highly-viscous substance is minimized. Metallic sodium () loaded in an extruder main body () is extruded from a nozzle () of the extruder main body () with a pressing tool () and, when it is detected that the metallic sodium () is extruded to a predetermined position, the movement of the pressing tool () is stopped and the extruded metallic sodium () is cut. In this case, an impulse (P) after stop is brought closer to a constant value until a load no longer acts on the metallic sodium () in the extruder main body () after stopping the movement of the pressing tool () by adjusting the movement speed of the pressing tool (). 1. A highly-viscous substance dispensing method including extruding a highly-viscous substance loaded in an extruder main body from a nozzle of the extruder main body with a pressing tool moving in the extruder main body , and cutting the extruded highly-viscous substance after stopping the movement of the pressing tool when it is detected that the highly-viscous substance is extruded to a predetermined position , whereinan impulse after pressing-tool movement stop with respect to the highly viscous substance is brought closer to a constant value until a load no longer acts on the highly-viscous substance in the extruder main body after stopping the movement of the pressing tool by adjusting the movement speed of the pressing tool.2. The highly-viscous substance dispensing method according to claim 1 , whereina target impulse after pressing-tool movement stop is set as the constant value, and whereinthe movement speed adjustment of the pressing tool is performed by changing a next movement speed of the pressing tool such that the impulse after pressing-tool movement stop comes closer to the target impulse after pressing-tool movement stop.3. The highly-viscous substance dispensing method according to claim 2 , whereinthe next movement speed of the ...

METHOD FOR PRODUCING A BUILT HOLLOW VALVE OF AN INTERNAL COMBUSTION ENGINE

A method for producing a hollow valve of an internal combustion engine may include providing a valve stem and a valve disc having a valve bottom and a valve cone; placing the valve bottom centrally in a mounting of an assembly device; holding the valve stem via a holding device; concentrically placing the valve stem onto the valve bottom and rotating the valve stem together with the valve bottom; welding the valve stem to the valve bottom; pushing the valve cone over the valve stem until the valve stem contacts the valve bottom; welding the valve cone together with the valve bottom; and welding the valve cone together with the valve stem. 1. A method for producing a hollow valve of an internal combustion engine , comprising:providing a valve stem and a valve disc having a valve bottom and a valve cone;placing the valve bottom centrally in a mounting of an assembly device,holding the valve stem via a holding device,concentrically placing the valve stem onto the valve bottom and rotating the valve stem together with the valve bottom,welding the valve stem to the valve bottom,pushing the valve cone over the valve stem until the valve stem contacts the valve bottom,welding the valve cone together with the valve bottom, andwelding the valve cone together with the valve stem.2. The method according to claim 1 , wherein welding at least one of (i) the valve stem to the valve bottom and (ii) the valve cone to at least one of the valve bottom and valve stem takes place via at least one laser claim 1 , the laser is stationary and rotating at least one of the valve stem claim 1 , valve bottom and valve cone during the welding about the stationary laser forming an associated circumferential seam.3. The method according to claim 1 , wherein welding at least one of (i) the valve stem to the valve bottom and (ii) the valve cone to at least one of the valve bottom and valve stem takes place via at least one laser claim 1 , and rotating the laser about at least one of the valve stem ...

METHOD OF CHARGING A HOLLOW VALVE WITH METALLIC SODIUM AND AN APPARATUS THEREFOR

There is provided a method of charging a hollow valve with metallic sodium easily and swiftly without being oxidized over the surface of the metallic sodium and an apparatus therefor. The metallic sodium is fed into a cavity of the hollow valve in which a valve stem has a smaller diameter. 1. A method of charging a hollow valve with metallic sodium , the method comprising:providing a workpiece, as a semi-finished product for hollow poppet valve, in which a cavity has an upward opening at a free end of a valve stem at a working position;inserting a nozzle into the opening to feed an inert gas into the cavity by jetting the inert gas from the nozzle;moving up the nozzle to put a holder between the workpiece and the nozzle, the holder holding rod-like metallic sodium; andpressing the metallic sodium into the cavity of the workpiece while the inert gas is jetted into the cavity from the nozzle.21221. The method of claim 1 , further comprising measuring mass W of the workpiece before the cavity of the workpiece is charged with the metallic sodium; measuring mass W of the workpiece after the cavity of the workpiece is charged with the metallic sodium; and determining whether or not the workpiece is charged with suitable amount of the metallic sodium based on difference of the mass ΔW=W−W.3. The method of wherein the holder is capable of moving between a feeding position where the held rod-like metallic sodium is fed into the workpiece and a receiving position which is away from the feeding position sideward claim 1 , wherein a predetermined length of the rod-like metallic sodium which is pressed out of a metallic-sodium extrusion device and cut at a predetermined length is held by the holder.4. An apparatus for charging a hollow valve with metallic sodium claim 1 , the apparatus comprising:a workpiece support that supports a workpiece as a semi-finished product for a hollow poppet valve, a cavity of the workpiece having an opening at a free end of a valve stem, the ...

METHOD FOR PRODUCING A HOLLOW ENGINE VALVE

The present invention provides a method for producing a hollow engine valve, with which the production process can be simplified and the processing precision can be improved. To this end, the present invention provides a method for producing a hollow engine valve () which is provided with a valve main body () in which a hollow hole () is formed along a valve umbrella part () and a hollow shaft part (), wherein a solid round bar () forming the material of the valve main body () is moulded to a semi-finished article () by means of a single hot-forging process, the semi-finished article () is subjected to rotary swaging whereby the semi-finished article () is moulded into a semi-finished article (), the semi-finished article () is subjected to necking whereby the semi-finished article () is moulded into the valve main body () , and a shaft end sealing member () is joined to the end part of the hollow shaft part () of the valve main body (). 1. A method for producing a hollow engine valve including a valve body in which a hollow bole extending through a valve umbrella portion and a hollow stem portion connected to the valve umbrella portion is formed , characterized in that the method comprises:shaping a solid round bar which is a raw material of the valve body into a valve body semi-finished product in which a semi-finished product hollow hole is formed, by performing hot forging once, the semi-finished product hollow hole corresponding to the hollow hole and extending through a semi-finished product valve umbrella portion corresponding to the valve umbrella portion and a semi-finished product hollow stem portion corresponding to the hollow seem portion;subjecting the valve body semi-finished product to a rotary swaging process in which an outer peripheral surface of the semi-finished product hollow stem portion is pressed while the valve body semi-finished product is rotated, and thereby reducing a diameter of the semi-finished product hollow stem portion and ...

METHOD FOR SUPPLYING INERT GAS INTO POPPET VALVE INTERMEDIATE AND APPARATUS FOR SUPPLYING INERT GAS INTO POPPET VALVE INTERMEDIATE

A method for supplying inert gas into a poppet valve intermediate and an apparatus for supplying inert gas are provided that are capable of properly filling the inert gas without waste into the poppet valve intermediate of any size. After a negative pressure is achieved by suction in an internal space (Win) of a poppet valve intermediate (W) as compared to an ambient pressure (Pa) of the poppet valve intermediate (W), the inert gas is supplied into the internal space (Win) until a pressure (P) of the internal space (Win) reaches the ambient pressure (Ps) of the poppet valve intermediate (W). 1. A method for supplying inert gas into a poppet valve intermediate in which an object to be supplied with inert gas is a poppet valve intermediate having an internal space with an opening on one axial end side , the poppet valve intermediate being arranged with the opening on one axial end side facing upward , the inert gas being supplied from the opening on one axial end side of the poppet valve intermediate before supplying a cooling medium metal into the internal space of the poppet valve intermediate , whereinafter a negative pressure is achieved by suction in the internal space of the poppet valve intermediate as compared to an ambient pressure of the poppet valve intermediate, the inert gas is supplied to the internal space until a pressure of the internal space reaches the ambient pressure of the poppet valve intermediate.2. The method for supplying inert gas into a poppet valve intermediate according to claim 1 , whereina supply/discharge adjuster is prepared that is capable of switching adjustment between a negative-pressure suction and a supply of inert gas, whereinfirst, the supply/discharge adjuster is brought into contact with an opening circumferential edge portion on one axial end side of the poppet valve intermediate to close the opening on one axial end side of the poppet valve intermediate, whereinthe negative-pressure suction is then performed through ...

VALVE FOR INTERNAL COMBUSTION ENGINES HAVING A GUIDE VANE FOR COOLANT

An internally cooled inlet or outlet valve for internal combustion engines, has a valve disc, a valve stem and a cavity inside the valve stem and the valve disc. A coolant is arranged in the cavity, wherein the cavity is provided with at least one guide vane for the coolant. 14. An internally cooled valve () for internal combustion engines , comprising{'b': '6', 'a valve disc (),'}{'b': '8', 'a valve stem (), and a'}{'b': 10', '8', '6, 'cavity () inside the valve stem () and the valve disc (), and'}{'b': 12', '10, 'a coolant (), which is arranged in the cavity (),'}characterized{'b': 10', '14', '16', '12, 'in that the cavity () is provided with at least one guide vane (, ) for the coolant ().'}2412. The internally cooled valve () for internal combustion engines according to claim 1 , wherein the coolant () is sodium.34182220. The internally cooled valve () for internal combustion engines according to or claim 1 , wherein the valve is in at least two parts and has an opening () on the valve-disc surface () claim 1 , which is closed with a lid ().4420141612. The internally cooled valve () for internal combustion engines according to claim 3 , characterized in that the lid () is provided with the at least one guide vane ( claim 3 , ) for the coolant ().5420141620. The internally cooled valve () for internal combustion engines according to claim 4 , characterized in that the lid () comprises at least two guide vanes ( claim 4 , ) claim 4 , which extend symmetrically and spirally outwards from a centre of the lid ().642026121416. The internally cooled valve () for internal combustion engines according to one of the preceding to claim 4 , characterized in that the lid () comprises a conical structure () in the centre claim 4 , in order to conduct the coolant () onto the guide vanes ( claim 4 , ).741416. The internally cooled valve () for internal combustion engines according to one of the preceding claims claim 4 , characterized in that the at least one guide vane ( claim ...

POPPET VALVE WITH A FORMED SEAT, AND METHOD OF MAKING

A method of forming a poppet valve having a stem, a valve head and a valve seat while concurrently maintaining compressive residual stress without grain coarsening on both the valve body and the valve seat. The method includes forming a rounded cladded part on the valve head of the poppet valve by welding and forming a valve seat surface at a predetermined aperture angle and cutting the cladded part to form a smooth surface which is subjected to uniform contact pressure at a temperature less than the recrystallization temperature of the base material or cladding material, whichever is lower, to enhance the durability of the valve seat. 1. A method of forming a valve seat of a poppet valve comprised of a stem and a valve head formed at one end thereof , said method comprising:forming a rounded cladded part on the valve head by welding; andforming a valve seat surface having a predetermined aperture angle on the cladded part,wherein the outer circumference of the valve head is cut into a predetermined dimension, the surface of the cladded part is cut to form a smooth surface thereon, and said smooth surface is forged by applying a uniform contact pressure at a temperature range possible for cold or warm forging while being less than the recrystallization temperature.2. (canceled)3. A poppet valve comprised of a stem and a valve head formed at one end thereof ,said valve head being provided with a rounded cladded part by welding so that a valve seat with a valve seat surface having a predetermined aperture angle is formed thereon, whereinthe outer circumference of the valve head being cut into a predetermined dimension, andthe surface of the cladded part being cut to form a smooth surface thereon to be forged by applying a uniform contact pressure at a temperature range possible for cold or warm forging while being less than the recrystallization temperature.4. (canceled) The present invention relates to a poppet valve with a formed seat and a method of forming the ...

METHOD AND DEVICE FOR MANUFACTURING METALLIC-SODIUM-FILLED ENGINE VALVE

The present invention is provided with: an umbrella part metallic sodium insertion device for inserting rod-shaped metallic sodium into a hollow part of a hollow valve; a melting device for melting the metallic sodium in the hollow part by inserting a push rod from an opening into the hollow part of the hollow valve, in which the metallic sodium has been inserted by the device, and, while pushing the rod-shaped metallic sodium in the hollow part, heating the umbrella part to a temperature at which the metallic sodium is melted; a stem part cooling device for cooling a stem part of the hollow valve, in which the metallic sodium has been melted by the melting device, to a temperature lower than the temperature at which the metallic sodium is melted; and a stem part metallic sodium insertion device for inserting rod-shaped metallic sodium into the hollow part which has been cooled by the device. 17.-. (canceled)8. A method for manufacturing a metallic-sodium-filled engine valve in which a hollow valve having a hollow part inside a stem part and a head part as well as an opening at an upper end of the stem part is provided thereinside with metallic sodium from the opening of the stem part , and then the opening is closed to fill the metallic sodium in the engine valve , the method comprising:a head part metallic sodium insertion step of inserting rod-shaped metallic sodium into the hollow part of the hollow valve;a melting step of melting the metallic sodium in the hollow part by inserting a push rod from the opening into the hollow part of the hollow valve in which the metallic sodium is inserted at the head part metallic sodium insertion step, and by pressing the rod-shaped metallic sodium in the hollow part while heating the head part to a temperature high enough to melt the metallic sodium, and then stopping heating the head part;a stem part cooling step of cooling the stem part of the hollow valve in a state after the metallic sodium is melted and heating the head ...

INTERNALLY COOLED VALVE FOR INTERNAL COMBUSTION ENGINES, AS WELL AS METHOD AND DEVICE FOR THE PRODUCTION THEREOF

A method and a device for the production of an internally cooled inlet or outlet valve for internal combustion engines, together with the resultant valve includes provision of a workpiece, which has a cylindrical stem and a cylindrical hole and, extends in the axial direction from one end of the valve stem. The method includes reshaping the end of the valve stern by form rolling of the cylindrical stem to a smaller diameter, wherein a diameter of the cylindrical hole is reduced, wherein the cylindrical hole remains. The method further includes reshaping by form rolling the section of the workpiece that is adjacent to the valve stem to form the valve head. 2414166. The method for the production of an internally cooled valve () for internal combustion engines claim 1 , in accordance with claim 1 , wherein prior to the form rolling process the workpiece ( claim 1 , ) comprises a diameter of at least that of the valve disk () of the finished valve claim 1 , and further comprising:{'b': '8', 'form rolling of a transition section between the valve head and the valve stem () to form a concave fillet.'}3416. The method for the production of an internally cooled valve () for internal combustion engines claim 1 , in accordance with or claim 1 , wherein the workpiece () is cup-shaped claim 1 , wherein{'b': 14', '16', '16', '6, 'the cup-shaped workpiece (, ) has a diameter at a base of the workpiece () that corresponds at least to that of the valve disk (),'}{'b': 26', '36', '16, 'wherein the cylindrical hole is a blind hole (), which extends from one end of the valve stem () in the direction of the base of the cup-shaped workpiece (), and'}wherein the form rolling process comprises a reshaping of the stem and a shaping of the valve body.44. The method for the production of an internally cooled valve () for internal combustion engines claim 3 , in accordance with claim 3 , wherein{'b': 16', '6, 'an outer surface of the base of the workpiece () already has the shape of the valve ...

Valve for internal combustion engines having a coating

The present invention for coating a valve head ( 6 ) of an inlet and/or outlet valve ( 4 ) comprises a preparation of a surface, which is to be coated, of the valve ( 4 ) for a coating, and a coating of the prepared surface with a ceramic high-temperature coating ( 22 ).

SLIDING MECHANISM

A sliding mechanism includes a first sliding member and a partner second sliding member configured to slide relative to the first sliding member . The first sliding member includes a matrix phase and a hard phase that is harder than the matrix phase , in which the hard phase is embedded in the matrix phase in a dispersed state. The second sliding member includes a base and a surface-treatment layer that is formed on the sliding surface of the base and is harder than the matrix phase 18.-. (canceled)9. A sliding mechanism , comprising: 'wherein the first sliding member consists of a matrix phase and a hard phase that is harder than the matrix phase, in which the hard phase is embedded in the matrix phase in a dispersed state,', 'a first sliding member and a partner second sliding member configured to slide relative to the first sliding member,'}the matrix phase is composed of copper or a copper alloy (which is neither a brass-based alloy nor a bronze-based alloy),the hard phase is composed of an iron alloy, andthe second sliding member is harder than the matrix phase.10. The sliding mechanism according to claim 9 , wherein the first sliding member comprises the hard phase that is exposed in a sliding surface of the first sliding member.11. The sliding mechanism according to claim 9 , wherein the second sliding member or a surface-treatment layer formed on a sliding surface of the second sliding member is harder than the first sliding member.12. The sliding mechanism according to claim 11 , wherein the surface-treatment layer is composed of at least one layer selected from the group consisting of a nitride layer claim 11 , a carburized layer claim 11 , a chromium plating layer and a diamond-like carbon coating layer.13. The sliding mechanism according to claim 9 , further comprising: 'wherein the cooling unit has at least one cooling function selected from the group consisting of water cooling, oil cooling and air cooling, and', 'a cooling unit disposed around the ...

HOLLOW POPPET VALVE

With a poppet valve using a coolant, maximum combustion efficiency is realized by adjusting relative values of a heat insulation effect and a heat dissipation effect. From the inside of a head portion () to a stem portion () of a hollow poppet valve () a heat insulating space (S) and a cooling portion (S) loaded with a coolant (), separated from each other by a partition (), are formed. By properly setting an installation position and a vertical length of the partition () according to a type of vehicle for which the valve is used, appropriate heat insulation effect and heat dissipation effect are obtained. Further, by the partition (), mechanical or thermal strength of the poppet valve in which the heat insulating space (S) and the cooling portion (S) are formed is increased. 15-. (canceled)6. A hollow poppet valve in which a head portion is formed integrally with one end side of a stem portion , a head-side hollow portion and a stem-side hollow portion separated from each other by a partition provided at a position corresponding to a fillet portion between a valve head portion and a valve stem portion are formed , the head-side hollow portion is formed by the partition , a spherical recess of a head portion shell , and a cap member defining a bottom surface of the head-side hollow portion on a combustion chamber side of the head portion , in the head-side hollow portion , a heat insulating portion containing a gas or a material having lower heat conductivity than a valve forming metal is configured , and in the stem-side hollow portion , a cooling portion loaded with a coolant is configured , whereina heat insulation effect is obtained at the heat insulating portion, a heat dissipation effect is obtained at the cooling portion, and by setting at least one of a position in the up-down direction and a length in the up-down direction of the partition, relative values of the heat insulation effect and the heat dissipation effect can be adjusted.7. A method for ...

INSIDE-COOLED DISC VALVE AND A SEMI-FINISHED PRODUCT AND METHOD FOR ITS PRODUCTION

A method for the production for a semi-finished valve product (), includes casting, forging, deep-drawing, pressing and/or drop-welding of one or several metal material into a semi-finished valve product () that corresponds to a circle segment of a valve cut open in the axial direction. A valve is produced by welding together at least two semi-finished valve products () into an internally cooled valve, with the weld running in the axial direction of the valve. 1484. A method for the production of a semi-finished valve product () , comprising partially folding a sheet , wherein the folded part () of the sheet being forge-welded in forging of drop-welding , forging , deep-drawing , pressing and/or drop-forging of said folding over sheet into a semi-finished valve produce () that corresponds to a circle segment of a valve cut open in the axial direction;{'b': '12', 'wherein the folded part forming a segment of a valve head () after forming.'}2444. The method for the production of a semi-finished valve product () according to claim 1 , with the circle segment corresponding to a semi-circle and therefore the semi-finished valve product () to a half shell claim 1 , or with the circle segment at least corresponding to a third-circle and thus the semi-finished valve product () at least to a third-shell.34. A semi-finished valve product () claim 1 , in the form of a circle segment of a valve cut open in the axial direction claim 1 , produced according to one of the method of .4444. The semi-finished valve product () according to claim 3 , with the circle segment corresponding to a semi-circle and thus the semi-finished valve product () to a half shell claim 3 , or with the circle segment at least corresponding to a third-circle and thus the semi-finished valve product () at least to a third-shell.5444244. The method for the production of a valve of at least two semi-finished valve products () according to claim 3 , with the method comprising provision of at least two semi- ...

COOLED VALVE FOR INTERNAL COMBUSTION ENGINES HAVING A LOAD RELIEF GROOVE

The invention relates to a cooled inlet or outlet valve () for internal combustion engines, comprising a valve disc (), a valve stem (), and a hollow space () inside the valve stem () and the valve disc (). A coolant () is arranged in the hollow space (). The valve is designed comprising at least two parts and has on a valve disc surface () an opening () which is closed by a cover (), wherein the cover () is additionally provided with at least one relief groove () which relieves a joint () between the opening () in the valve disc surface () and the cover (). 1. A cooled valve for internal combustion engines , comprisinga valve disk,a valve stem,as well as a cavity within the valve stem and the valve disk, anda coolant which is disposed in the cavity,wherein the valve is in at least two parts and is provided with an opening on a valve disk face which is closed with a cover,wherein the cover is additionally provided with at least one relief groove which relieves a joint between the opening of the valve disk face and the cover.2. The cooled valve for internal combustion engines as set forth in claim 1 , wherein the coolant is sodium.3. The cooled valve for internal combustion engines as set forth in claim 1 , wherein the at least one relief groove in the cover is disposed around a valve axis in a circle.4. The cooled valve for internal combustion engines as set forth in claim 1 , wherein the at least one relief groove is disposed on an inside of the cover in the cavity.5. The cooled valve for internal combustion engines as set forth in claim 1 , wherein the at least one relief groove is disposed on the outside of the cover.6. The cooled valve for internal combustion engines as set forth in claim 5 , wherein the cover comprises a conical structure in the centre in order to guide the coolant in the radial direction of the valve disk.7. The cooled valve for internal combustion engines as set forth in claim 6 , wherein the relief groove on an inner side merges directly ...

Side Draft, Slide Valve Aspiration

Aspiration and multi-section slide valves () for internal combustion engines (). The slide valves () include a central, reduced diameter neck () connecting separate cylindrical valve sections (), which have multiple spaced-apart ring groove arrays seating multiple rings. Slide valves () utilize spaced apart, continuously pressurized, annular oil confinement zones () that are defined between the slide valve exterior and its sleeve () between groups of piston ring arrays. The oil zones are axially spaced along the length of the slide valve and continuously pressured by oil flow passageways (). During slide valve movement these pressurized oil zones tend to stabilize the slide valve (), preventing metal-to-metal contact such as that associated with rocking, tipping, chafing or scrubbing. When appropriately displaced, the slide valve neck () facilitates transverse fluid flow through the slide valve and its confining sleeve between cylinder gas pathways (). 1. A slide valve aspiration system for an internal combustion engine comprising at least one cylinder , the cylinder bordering gas inlet and gas outlet pathways , the slide valve aspiration system comprising:a slide valve adapted to be reciprocated between a gas conducting position and a spaced-apart gas blocking position within a cylindrical tunnel having transverse gas ports, the slide valve comprising at least a pair of spaced-apart, elongated, rigid, cylindrical sections connected by a reduced diameter neck, said slide valve adapted to be connected to a reciprocation actuator for reciprocating the slide valve;each cylindrical section provided with a plurality of ring arrays, each ring array comprising at least one ring;at least one annular oil confinement zone defined between at least one cylindrical valve section and the tunnel in which the valve is disposed between adjacent ring arrays;an oil inlet communicating with said oil confinement zone;wherein at least one slide valve section is adapted to periodically ...

Internally cooled valve for an internal combustion engine

An internally cooled valve ( 2 ) includes a valve body having a valve head ( 4 ) and a valve stem ( 6 ). The valve body has at least one cavity ( 8 ) in which coolant ( 10 ) is situated. The coolant is a nanofluid ( 12 ) in which nanoparticles ( 14 ) are dispersed in a dispersion medium ( 16 ).

Mechanically Retained Seat for Valve Assembly

A valve assembly may include a seat that is formed integrally (e.g., cast) into a dovetail shaped cavity. A portion of the seat is present above the surface of the disc according to a desired profile and to provide a bubble tight seal. Walls of the dovetail may include an angled surface (e.g., 45 degrees) for retention considerations. The dovetail may be cast, as opposed to machined, to reduce manufacturing costs. Additionally, the seat may be mechanically deformed before it can be removed. 1. An apparatus comprising:a valve assembly having a valve surface, wherein the valve assembly includes an aperture; anda seat material configured to be positioned within the aperture, wherein a surface of the seat material positioned at an angle relative to the valve surface.2. The apparatus of claim 1 , wherein the surface of the seat material is part of a dovetail structure.3. The apparatus of claim 1 , wherein the surface of the seat material forms an approximately forty-five degree angle with regard to the valve surface.4. The apparatus of claim 1 , wherein a portion of the seat material extends above the valve assembly surface when the seat material is seated in the aperture.5. The apparatus of claim 4 , wherein the seat material extends above the valve assembly surface according to form part of a seal.6. The apparatus of claim 1 , wherein seat material is molded into the aperture.7. The apparatus of claim 1 , wherein the seat material includes at least one of rubber and a polymer and an elastomer.8. The apparatus of claim 1 , wherein the seat material is formed integrally within the valve assembly.9. The apparatus of claim 1 , wherein the seat material is cast within the valve assembly.10. The apparatus of claim 1 , wherein the seat material must be deformed before it can be removed from the valve assembly.11. A method of manufacturing a valve claim 1 , the method comprising:forming an aperture within a valve surface; andpositioning a seat material within the aperture, ...

Variable valve timing mechanism for internal combustion engine

Engine variable valve timing mechanism

METHOD AND DEVICE FOR MANUFACTURING HOLLOW, INTERNALLY COOLED VALVES

A method for shaping a hollow valve preform of a pull rod () includes a structuring bulb () which is inserted into the cavity () of a shaft portion () of a valve preform. The structuring bulb () has an outer diameter, and has an outer structuring, whereafter the hollow shaft portion () is shaped, wherein at least a portion of an inner diameter of the cavity () is reduced below an outer diameter of the structuring bulb (). The structuring bulb () is then pulled out through the shaped shaft portion (), wherein the outer structuring is at least partially pressed into the surface of the cavity (). 1. A method for shaping a hollow valve preform comprising:providing a valve preform, which comprises a head portion and a hollow shaft portion comprising a cavity, wherein the shaft portion has an initial outer diameter and an inner diameter,inserting a pull rod comprising a structuring bulb into the cavity, wherein the structuring bulb has an outer diameter, and has an outer structuring,shaping the hollow shaft portion, wherein at least a portion of an inner diameter of the cavity is reduced below the outer diameter of the structuring bulb,pulling out the structuring bulb through the shaped shaft portion, wherein the outer structuring is at least partially pressed into the surface of the cavity.2. The method according to claim 1 , wherein the structuring bulb has a coil-shaped outer structuring claim 1 , and wherein the structuring bulb is rotated through the shaped shaft portion during the pull-out.3. The method according to claim 1 , further comprising inserting,', 'shaping, and', 'pulling out, 'repeating the steps of'}by use of structuring bulbs, which each have a decreasing outer diameter RA.4. The method according to claim 3 , wherein the structuring bulbs each have a rising structure height.5. The method according to claim 3 , wherein the structuring bulbs have a coil-shaped outer structuring each with rising pitch.6. The method according to claim 3 , wherein ...

Hollow poppet valve

A hollow poppet valve having an improved heat transfer capability is provided. The valve has an internal cavity, extending from within a valve head into a stem of the valve, is loaded with a coolant together with an inert gas. The coolant in the valve head is stirred by swirl flows of the coolant generated during reciprocal motions of the valve. A multiplicity of swirl-forming protrusions are formed on at least on one of the bottom and the ceiling of the valve head cavity in such a way that swirl flows of coolant are generated by the protrusions in the valve head cavity during reciprocal motions of the valve to thereby stir the coolant in the circumferential direction of the cavity.

내연기관의 가변밸브 타이밍기구

본 발명은 제 2회전체와 연동하는 구동축 또는 피구동축의 강도를 향상시킬 수 있음과 동시에 각 압력실, 각 압력공급로의 시일특성을 향상시킬 수 있는 내연기관의 가변밸브타이밍기구를 제공한 것이다. 본 발명에서 가변밸브타이밍기구(10)는 캠샤프트(39)와 이 캠샤프트(39)의 선단에 고정된 로우터(11)를 구비한다. 캠샤프트(39)의 외경(φA)을 로우터(11)의 보스(48)의 외경(φB)보다도 작게 설정한다. 캠샤프트(14)의 선단부에 볼트구멍(143)과 캠샤프트(39)의 대략 축방향으로 연장하는 유로(145)와 캠샤프트(14)의 축심으로부터 이간하도록 연장하는 유공(148)을 형성한다. 유로(145)는 캠샤프트(39)의 선단면으로 개구하고, 유공(148)은 캠샤프트(39)의 외주면(149)으로 개구한다.

发动机空心气门毛坯精密成形方法

本发明涉及发动机空心气门毛坯精密成形方法，通过楔横轧模具实现楔横轧精密制坯，使气阀金属管料在楔横轧模具的轧制作用下发生形变而中部凹陷、两端伸长，中部形成空心气门的杆部，两端形成待加工的盘部，盘部与杆部之间的连接段形成具有弧形凹面和圆台侧面结构的颈部，由此使获得的空心气门坯料的形状与尺寸之间的一致性好；通过利用与所述制得的空心气门盘部结构匹配的模锻成形模具对获得的空心气门预制坯进行盘部加工，将空心气门预制坯直接置于模锻成形模具的腔体中实现锻造，从而实现制成的空心气门的杆部、颈部及盘部整体流线分布合理，组织细密，满足性能要求，不仅避免材料浪费，并有效提高生产效率和材料利用率。

Hollow poppet valve

Изобретение может быть использовано в полых тарельчатых клапанах, применяемых в двигателях внутреннего сгорания. Полый тарельчатый клапан содержит стержень (12), головку (14) клапана, выполненную на одном конце стержня (12) за одно целое с ним, и внутреннюю полость (S). Внутренняя полость (S) проходит от внутренней части головки (14) клапана в стержень (12). Внутренняя полость (S) заполнена охлаждающим агентом (19) вместе с инертным газом. Внутренняя полость (S) имеет диаметрально большую полость (S1) головки клапана, образованную в головке (14) клапана, и диаметрально маленькую линейную полость (S2) стержня, образованную в стержне (12) и сообщающуюся с центральной областью полости (S1) головки (14) клапана. Множество формирующих вихрь выступов (20), (30) образовано по меньшей мере на дне или потолке полости (S1) головки (14) клапана. Формирующие вихрь выступы (20), (30) расположены на равных интервалах в окружном направлении полости (S1) головки (14) клапана. Каждый выступ (20), (30) имеет наклонную поверхность, наклоненную в окружном направлении, для генерирования вихревого потока (F20), (F30) охлаждающего агента (19) в полости (S1) головки (14) клапана вокруг центральной оси (L) клапана (10) во время возвратно-поступательного движения клапана (10) в направлении вдоль его центральной оси (L). Раскрыты варианты выполнения полого тарельчатого клапана. Технический результат заключается в улучшении перемешивания охлаждающего агента в клапане. 3 н. и 12 з.п. ф-лы, 21 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 618 139 C1 (51) МПК F01L 3/14 (2006.01) F01L 3/20 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ФОРМУЛА (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ 2015148283, 11.04.2013 (24) Дата начала отсчета срока действия патента: 11.04.2013 (72) Автор(ы): ЦУНЕИСИ Осаму (JP), ИТИМИЯ Ацуюки (JP) (73) Патентообладатель(и): НИТТАН ВЭЛВ КО., ЛТД. (JP) Дата регистрации: (56) Список документов, цитированных в отчете о поиске: JP 2008-014237 ...

Method for ultrasonic measurement of wall thickness in hollow valves

本发明涉及一种用于测量具有中空阀头(6)的中空阀(1)中壁厚(b)的方法，在该方法中，使用至少一个超声波传感器(3)确定阀杆(2)的区域中的壁厚(b s )，其中，超声波传感器(3)以这种方式相对于阀杆(2)上的表面定向，使得发射的超声波以垂直方式被引入表面，和/或使用至少一个超声波传感器(3)确定倒角(9)的区域中的壁厚(b 2 )，其中，超声波传感器(3)定位在倒角(9)上的一个位置处，在该位置，腔室(5')的内切线(10)平行于倒角(9)上的外切线(11)运行，并且其中，超声波传感器(3)以这种方式相对于切线(10、11)定向成，使得发射的超声波以垂直方式被引入表面。

Patent DE3929534C2

Cold-warm forging of slug of engine valve

(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。

Internally cooled valve having a coolant conducting system

Hollow valve with optimized internal stem geometry and method of making same

本发明提供了一种具有优化的内部杆几何形状的中空阀，该阀的阀杆在内表面上具有表面扩大结构。还提供了一种用于制造这种中空阀的阀体的方法，其中，该方法包括：提供碗状半成品，碗状半成品具有环形壁和基部，环形壁围绕腔；接着是通过插入的带有结构的心轴延长壁；最后，减小不带有心轴的环形壁的外径，以获得待制造阀的预定阀杆外径。

Processing method of laser overlay parts

Cooling device of engine valve

본원 발명의 목적은 엔진밸브의 작동시 연소실가스의 고온접촉과 마찰에 따른 고열에 대한 냉각작용이 이루어져서 엔진밸브의 열변형을 방지하여 엔진성능을 향상시킬 수 있는 자동차 엔진밸브의 냉각장치를 제공하는데 있다. 상기한 목적을 달성하기 위한 본원 발명의 수단은, 하측 단부에 유선형홈이 형성되어 있는 로커아암 스크류와; 상기 로커아암 스크류의 하측에 위치되며 내부에 냉각액 수용실이 형성되어 상단이 개방되어 있는 밸브와; 및 길게 형성되어 상기 냉각액 수용실에 넣어지며 상측단부에는 상기유선형 홈에 결합되는 돌기가 구비되어 있고 중간에는 단턱이 형성되어스프링에 의해 상향탄지되며 하단 주연에는 날개가 부착되어 있는 피스톤과; 로 이루어진 것을 특징으로 한다.

Hollow poppet valve

Изобретение относится к пустотелым тарельчатым клапанам. Клапан (10) содержит шток (12а), клапанную тарелку (14), выполненную как одно целое со штоком (12a) на одном его конце, и внутреннюю полость, которая простирается из клапанной тарелки (14) в шток (12а). Внутренняя полость наполнена смазочно-охлаждающей жидкостью (19) вместе с инертным газом и имеет полость (S1) клапанной тарелки (14) с большим внутренним диаметром и линейную полость (S2) штока (12a) с маленьким внутренним диаметром и сообщающуюся с центральной зоной полости клапанной тарелки под прямым углом. Полость штока (S2) имеет первый участок (S22) рядом с клапанной тарелкой (14) и второй участок (S21) рядом с концом штока (12a). Причем внутренний диаметр второго участка (S21) больше, чем диаметр первого участка (S22). В полости штока (12а) выполнена кольцевая ступень (17), а полость заполнена смазочно-охлаждающей жидкостью (19) до уровня выше кольцевой ступени (17). 2 з.п. ф-лы, 5 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 615 885 C1 (51) МПК F01L 3/14 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ФОРМУЛА (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ 2015143664, 14.03.2013 (24) Дата начала отсчета срока действия патента: 14.03.2013 (72) Автор(ы): ЦУНЕИСИ, Осаму (JP), ИСИХАРА, Наоя (JP) (73) Патентообладатель(и): НИТТАН ВЭЛВ КО., ЛТД. (JP) Дата регистрации: (56) Список документов, цитированных в отчете о поиске: SU 1359442 15.12.1987 A1. US Приоритет(ы): (22) Дата подачи заявки: 14.03.2013 0002682261 29.06.1954 A1. JP 0003264714 26.11.1991 A. (45) Опубликовано: 11.04.2017 Бюл. № 11 (86) Заявка PCT: JP 2013/057133 (14.03.2013) (87) Публикация заявки PCT: Адрес для переписки: 129090, Москва, ул. Б.Спасская, 25, строение 3, ООО "Юридическая фирма Городисский и Партнеры" 2 6 1 5 8 8 5 (54) ПУСТОТЕЛЫЙ ТАРЕЛЬЧАТЫЙ КЛАПАН (57) Формула изобретения 1. Пустотелый тарельчатый клапан, содержащий: шток; клапанную тарелку, выполненную как одно целое со штоком на одном его конце; и ...

PROCESS FOR MANUFACTURING A VALVE.

Internal combustion engine with an arrangement of inlet valves to reduce thermal transfer to the cylinder head, especially a motor vehicle engine with fuel injection

An internal combustion engine incorporates at least one cavity (34, 36) in the vicinity of a guide (16) for the inlet valve (10) and/or a collar (20) forming a sealing seat is arranged and realised, in a cylinder head (18), in a manner that this cavity reduces a thermal transfer brought about respectively from the guide or collar to the cylinder head.

Exhaust valve device of internal-combustion engine

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

Valve manufacturing process

Improvements to engine valves

Process for the manufacture of hollow valves for internal combustion engines

Inlet valve of internal combustion engine

Изобретение может быть использовано в двигателях внутреннего сгорания (ДВС). Впускной клапан, предназначен для установки во впускном канале ДВС. Впускной клапан представляет собой единую монолитную деталь, содержащую стержень клапана, галтель клапана и тарелку, имеющую боковую торцевую поверхность и контактную фаску. Контактная фаска представляет собой усеченно-коническую поверхность с меньшим основанием, имеющим радиус R2, и обеспечивает возможность контакта с седлом клапана ДВС. Стержень клапана выполнен по крайней мере из одного участка с постоянным радиусом, при этом радиус стержня клапана в зоне сопряжения с галтелью равен R1. Галтель клапана выполнена с увеличением диаметра от стержня клапана к тарелке. Профиль галтели выполнен в соответствии с кривой, точки которой определены парами координат (x a ; r a ), где x - координата, измеренная вдоль оси клапана, начиная от линии сопряжения галтели и тарелки, r - координата, измеренная вдоль торцевой поверхности тарелки, начиная от оси клапана, a - порядковый номер точки. Совокупность точек (x a ; r a ), образующих кривую профиля галтели, расположена между двумя пограничными кривыми, каждая из которых определена совокупностью N точек (x b , r b ) и (x t , r t ) соответственно, где x b =d b *R2, r b =l b *R2+m b *(R1-0.2*R2), x t =d t *R2, r t =l t *R2+m t *(R1-0.2*R2. Приведены значения d b , l b , m b для совокупности точек N от 1 до 8 и значения d t , l t , m t для совокупности точек N от 1 до 9. Технический результат заключается в подборе оптимальной с аэродинамической точки зрения формы криволинейной галтели клапана. 2 з.п. ф-лы, 7 ил., 2 табл. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 656 080 C1 (51) МПК F01L 3/20 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК F01L 3/20 (2017.08); B21K 1/22 (2017.08) (21)(22) Заявка: 2016147031, 30.11.2016 (24) Дата начала отсчета срока действия патента: Дата регистрации: 30.05.2018 (56) Список документов, цитированных ...

Hollow poppet valve

To provide a hollow poppet valve having an improved heat reduction effect. In a hollow poppet valve ( 10 ) having a valve head ( 14 ) and a stem ( 12 ) integral with the valve head ( 14 ), the hollow poppet valve ( 10 ) is formed with an internal cavity S that extends in the valve head ( 14 ) and the stem ( 12 ). The internal cavity S is charged with a coolant ( 19 ) and an inert gas. The internal cavity S has a generally disk-shape internal cavity S 1 and an internal stem cavity S 2 formed in the stem ( 12 ) and connected to the internal valve head cavity S 1 at a right angle. During a reciprocal motion of the valve ( 10 ), a vertical convective flow of coolant ( 19 ) along the axis L of the valve ( 10 ) is established at least in the internal valve head cavity S 1 , thereby enhancing its heat reduction effect.

Method for manufacturing hollow engine valve

A method for manufacturing a hollow engine valve, capable of simplifying the manufacturing process and reducing the manufacturing cost. A method for manufacturing a hollow engine valve is configured in such a manner that, in order to form the hollow shaft section of a half-finished product (1a) into a predetermined shape, the hollow shaft section is inserted in sequence into die holes (M1, M2, M (m-1), Mm, M (n-1), Mn'), which have different hole shapes, and subjected in sequence to drawing so as to reduce the outer diameter and the inner diameter of the hollow shaft section in stages and so as to stretch the length of the hollow shaft section in stages. In the method, the half-finished product (1a) is subjected to heat treatment so that the hardness thereof is lower than or equal to a predetermined level, a shaft end sealing section (15) is formed by increasing the wall thickness of the opening end of the hollow shaft section (12) toward the inside of the opening end by the die hole (Mn') of a die (Din'), the die hole (Mn') having an inner diameter adjusted to d2', and the gap in the shaft end sealing section (15) is welded.

Patent JPS622248Y2

Hollow stem poppet valve

Ultra light engine valve

An ultra light poppet valve for an internal combustion engine. The valve is formed by cold forming a blank into an elongated cup having an extremely thin wall and a flared open end onto which a cap is welded, the bottom end of the cup which defines the tip end of the valve having a wall section which is substantially of the thickness of the original blank. In accordance with one aspect of the invention, a keeper groove is formed adjacent the tip end as part of the cold forming process.

Ultra light engine valve

一种用于内燃机的超轻菌形气门及其制造方法。该气门是通过将一个坯料冷成形为一个细长的杯形件的方式成形的，该杯形件具有一个非常薄的壁和一个其上焊接有一个帽盖的喇叭形开口端，该杯形件的底端形成该气门的底端，该气门的壁截面的厚度与原始坯料的厚度基本上相同。在靠近尾端处形成有一个卡槽，其作为冷却成形工艺的一部分。根据本发明的方法，包括经过多道冷成形工艺加工扁平金属坯料，使该坯料形成的圆柱件壁厚减小到一定尺寸，从而使气门的最大应力点由于燃烧压力而位于离气门纵向中心充分远的距离处。

PROCESS FOR MANUFACTURING A FILLED SODIUM VALVE

LE DOMAINE TECHNIQUE DE L'INVENTION CONCERNE UN PROCEDE DE FABRICATION DE SOUPAPES REMPLIES DE SODIUM. LE PROBLEME TECHNIQUE POSE CONSISTE A FABRIQUER DE TELLES SOUPAPES QUI SOIENT TOTALEMENT REMPLIES DE SODIUM AFIN D'EVITER QUE LE SODIUM MOUSSE OU SE CORRODE. SUIVANT L'INVENTION, ON INTRODUIT LE SODIUM DANS UNE CAVITE DE LA TIGE 1 DE SOUPAPE PAR UN PERCAGE DE REMPLISSAGE 2 DE DIAMETRE RELATIVEMENT GRAND ET ON FERME CE PERCAGE AU MOYEN D'UN BOUCHON 3 ETOU PAR SOUDAGE OU BRASAGE CLASSIQUES, ET APRES LA FERMETURE DU PERCAGE DE REMPLISSAGE 2 ON MET LA CAVITE DE LA TIGE 1 SOUS VIDE PAR UN CONDUIT DE FAIBLE SECTION 6 ET ON LA FERME ENSUITE SOUS VIDE ET DE FACON ETANCHE AU VIDE PAR SOUDAGE OU BRASAGE. L'UTILISATION PRINCIPALE DE L'INVENTION RESIDE DANS L'EMPLOI DE TELLES SOUPAPES DANS LES MOTEURS A PISTONS. THE TECHNICAL FIELD OF THE INVENTION RELATES TO A PROCESS FOR MANUFACTURING VALVES FILLED WITH SODIUM. THE TECHNICAL PROBLEM IS TO MANUFACTURE SUCH VALVES WHICH ARE TOTALLY FILLED WITH SODIUM TO PREVENT THE SODIUM FROM FOAMING OR CORROSION. FOLLOWING THE INVENTION, THE SODIUM IS INTRODUCED INTO A CAVITY OF THE VALVE STEM 1 BY A FILLING BORE 2 OF RELATIVELY LARGE DIAMETER AND THIS BORE IS CLOSED BY MEANS OF A PLUG 3 AND OR BY CONVENTIONAL WELDING OR BRAZING, AND AFTER THE CLOSING OF THE FILLING BORE 2 THE CAVITY OF THE ROD 1 IS VACUUMED THROUGH A LOW SECTION 6 DUCT AND THEN IS CLOSED UNDER VACUUM AND IN A VACUUM TIGHT BY WELDING OR BRAZING. THE MAIN USE OF THE INVENTION RESIDES IN THE USE OF SUCH VALVES IN PISTON ENGINES.

Internal cooling valve with inertia pump

Method for purifying metallic sodium

It is preferable that metallic sodium to be loaded to an engine valve used for an internal combustion engine such as automobile engine have high purity. However, conventionally, an organic solvent remaining in micropores on a surface of the metallic sodium have been hardly attracted attention. Provided is a method for purifying metallic sodium including steps of placing metallic sodium containing organic solvent in the micropores thereof in a melting tank which is sealed, and heating the melting tank under reduced pressure to vaporize and remove the organic solvent coating the metallic sodium.

A method and machine for manufacturing a hollow head and stem valve, and a valve obtained by this method.

Improvements in, and relating to, exhaust valves of internal combustion engines

596,480. Valves. AUSTIN MOTOR CO., Ltd., and RIX, J. R. July 27, 1945, No. 19230., [Class 7 (vi)] To assist cooling, the stem of a hollow poppet exhaust valve H is made with an external diameter not less than 40 per cent. of the maximum diameter of the valve at its seat D, the hollow h in the stem, closed by a hardened steel screwed cap J, being filled with a coolant such as sodium. The stem, having relatively thin walls, slides in a bore b<2> in the water-cooled cylinder head A with no intervening guide sleeve, the large peripheral area of the stem and thin walls in close proximity to the water jacket B all contributing to increase the cooling effect. The hollow h may extend into the valve head H.

METHOD FOR MANUFACTURING A VALVE

L'invention concerne un procédé de fabrication d'une soupape, notamment une soupape d'échappement d'un moteur à combustion interne. La soupape se compose d'une tige de forme tubulaire, fabriquée séparément et comportant une partie s'élargissant vers l'extrémité située du côté fonctionnel de la soupape ainsi qu'une tête de soupape réalisée en une matière très résistante à la chaleur et comportant une partie formant la base de soupape, une partie formant le siège de soupape et une partie dorsale de soupape, située à la suite et s'étendant jusqu'à une zone commune de jonction avec la tige de soupape, cette tige de soupape et la tête de soupape étant reliées entre elles dans la zone de jonction; pour la formation de la tige de soupape (3) un tronçon tubulaire de matériau de départ est réduit par déformation à froid au diamètre (D1 ) de la tige, une zone de transition (5) située entre la tige de soupape réduite et le matériau de départ est profilée avec une forme d'arc en créant une partie de tige en élargissement, et la tige de soupape (3) est sectionnée, dans la partie de tige en élargissement, en un endroit correspondant au diamètre de la zone de jonction entre la tête de soupape et la tige de soupape. The invention relates to a method of manufacturing a valve, in particular an exhaust valve of an internal combustion engine. The valve consists of a tubular shaped stem, manufactured separately and having a part which widens towards the end located on the functional side of the valve and a valve head made of a highly heat-resistant material and comprising a part forming the valve base, a part forming the valve seat and a back valve part, located after and extending to a common area of junction with the valve stem, this valve stem and the valve stem. valve head being interconnected in the junction area; for the formation of the valve stem (3) a tubular section of starting material is reduced by cold deformation to the diameter ...

Improvements in the manufacture of composite metallic poppet valves

593,709. Making composite valves. EATON MANUFACTURING CO. March 19, 1945, No. 6869. Convention date, April 22, 1944. [Classes 83 (ii) and 83 (iv)] [Also in Group XXVII] Welding.-Composite poppet valves &c. are made by assembling the preformed parts inside a container which is filled with inert gas and sealed, and the whole is then heated and compressed to bond the parts inside. The container is then removed and further machining and forging carried out. A cylindrical body 10, prepared for welding to a disc 12 of corrosion and/or erosion resistant material, the parts placed together inside a cover 14 which is filled with inert gas and sealed by welding on a plate 16. The whole is then heated and initially forged after which the container is removed and the assembly subjected to further forging and machining to produce the finished valve shown in Fig. 6. In a modification an additional ring of resistant metal is fitted to the underside of the valve head so that after forging in the container the valve has a resistant dome and undersurface. U.S.A. Specification 1,984,751 is referred to.

A process for the production of a valve

Hollow disc valve

FIELD: engines and pumps. SUBSTANCE: hollow disc valve (10) has stem (12) made at its one end integral with valve plate (14). Valve (10) has inner cavity (S) extending from inside of valve tray (14) to stem (12) and filled with coolant (19) together with inner inert gas. Plate (14) of valve is equipped with inner cavity (S1) of valve plate (14) with conical surface located inside it and having shape of circular truncated cone, similar to converging to cone outer periphery of valve plate (14). Stem (12) is equipped with linear internal cavity (S2) located inside of it and perpendicularly connected to surface of circular truncated cone upper end. Peripheral area around one open end of internal cavity (S2) of stem (12) is planar surface perpendicular to axis (L) of valve (10). Inner cavity (S1) of valve plate (14) is equipped with a ceiling (14b1), which forms curtain rail circular step in mutually connecting area between cavity (S1) of valve plate (14) and cavity (S2) of stem (12). In inner cavity (S1) of valve plate (14) during the reciprocal movement of valve (10) vertical convection cooling agent flow (19) is established along valve (10) axis (L). EFFECT: technical result consists in improvement of valve heat transfer capacity. 2 cl, 17 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 580 967 C1 (51) МПК F01L 3/14 (2006.01) F01P 3/14 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ 2015116871/06, 02.10.2012 (24) Дата начала отсчета срока действия патента: 02.10.2012 (72) Автор(ы): ОНУМА Хироки (JP), ХАСЕГАВА Дзин (JP) (73) Патентообладатель(и): НИТТАН ВЭЛВ КО., ЛТД. (JP) R U Приоритет(ы): (22) Дата подачи заявки: 02.10.2012 (45) Опубликовано: 10.04.2016 Бюл. № 10 2 5 8 0 9 6 7 (56) Список документов, цитированных в отчете о поиске: 2011179328 A, 15.09.2011. WO 2010/ 041337 A1, 15.04.2010. US 5769037 A, 23.06.1998 . SU 1359442 A1, 15.12.1987. SU 489865 A, 27.01.1976. (85) Дата начала рассмотрения заявки ...

Process for the production of a valve

A process for the production of a valve, in particular a charge cycle valve of an internal-combustion engine, having a separately produced hollow valve shank with a widening shank section arranged at the valve-side end, which is connected to a valve disk of highly heat resistant material. The valve shank is produced from a tubular starting material by cold forming to the shank diameter, and subsequently a transitional region lying between reduced valve shank and starting material is shaped as a shank section widening in the form of an arc. The valve shank is severed at the widening shank section at a point corresponding to the diameter of the point of connection between valve disk and valve shank.

Valve and method of production

1,270,206. Welding by pressure; making I.C. engine poppet valves. EATON YALE & TOWNE Inc. 10 Nov., 1970 [20 Nov., 1969], No. 53381/70. Headings B3A and B3R. [Also in Division F1] In a method of manufacturing a sodiumcooled poppet valve for an internal combustion engine sticks 52 of sodium are placed in the bore 26 of a stem portion 22 of a forged steel valve component 20 and a tip 30 for the stem is friction welded to the stem in a friction welding lathe (Fig. 5, not shown) to form a sealed enclosure for the sodium. External weld flash 50, 51 may be machined off after annealing and the valve then hardened. The internal flash 53, 54 is acceptable provided the bore 26, 36 is not closed by it. The forged valve component 20 is preferably of a corrosion and temperature resistant alloy steel (a specific chrome-alloy steel composition is given) and the tip 30 of a wearresistant steel.

Gas exchange valve of an internal combustion engine

Die vorliegende Erfindung betrifft ein Gaswechselventil (1) einer Brennkraftmaschine (2) mit einem hohlen Ventilschaft (3) und einem Ventilteller (4), bei dem – der Ventilteller (4) einen Ventilboden (5) und einen mit dessen äußerem Rand verbundenen, hohlen Ventilkegel (6) umfasst, der sich mit von dem Ventilboden (5) zunehmendem Abstand verjüngt, – der Ventilschaft (3) den hohlen Ventilkegel (6) durchläuft und jeweils fest einerseits mit dem Ventilboden (5) sowie andererseits mit dem verjüngten Ende des Ventilkegels (6) verbunden ist. Erfindungswesentlich ist hierbei, – dass im Ventilschaft (3) ein erster Hohlraum (7) vorgesehen ist, der von einem im Ventilteller (4) angeordneten zweiten Hohlraum (8) fluidisch getrennt ist, – dass der erste Hohlraum (7) und der zweite Hohlraum (8) einen unterschiedlichen Kühlmittelfüllstand (9, 10) aufweisen. The present invention relates to a gas exchange valve (1) of an internal combustion engine (2) with a hollow valve stem (3) and a valve disk (4), in which - the valve disk (4) has a valve base (5) and a hollow one connected to its outer edge Valve cone (6), which tapers as the distance from the valve base (5) increases, - the valve stem (3) passes through the hollow valve cone (6) and is fixed to the valve base (5) on the one hand and to the tapered end of the valve cone on the other (6) is connected. It is essential to the invention that a first cavity (7) is provided in the valve stem (3), which is fluidically separated from a second cavity (8) arranged in the valve plate (4), - that the first cavity (7) and the second cavity (8) have a different coolant level (9, 10).

Valve cone with corrosion-resistant protective cover

Hollow lifting valve

一种空心提升阀，其使用制冷剂，调节隔热效果和吸热效果的相对值，实现最大的燃烧效率。从空心提升阀(10)的伞部(14)内到轴部(12)，形成由隔壁(15)分离的隔热空间部(S1)和装填冷却材料(19)的冷却部(S2)。通过与使用车种等相应地适宜设定隔壁(15)的设置位置、上下长度，能够得到适当的隔热效果和吸热效果。进而，形成了隔热空间部(S1)、冷却部(S2)的提升阀的机械或热强度由前述隔壁(15)上升。

Valve for an internal combustion engine

The valve has a valve body (2) having a valve disk (3) and a valve stem (4). The stem follows the disk in axial direction with a cooling system (5) provided. The cooling system is arranged in the valve stem in the form of a cooling agent line (51) and in the valve disk as valve disk cooling (52). The cooling agent line and the valve disk cooling connect at a junction point (6). The cooling agent between the cooling agent line and the valve disk cooling is exchangeable. The valve stem is connected by means of mechanical connections to the junction point with the valve disk.

Built hollow valve

Die vorliegende Erfindung betrifft ein Hohlventil Gebautes Hohlventil (1) einer Brennkraftmaschine, mit einem Ventilteller (2) und einem sich daran anschließenden Ventilschaft (3), wobei im Ventilschaft (3) ein Hohlraum (4) zur Aufnahme eines Kühlmittels (5) angeordnet ist. Erfindungswesentlich ist dabei, dass der Hohlraum (4) im Ventilschaft (3) zu 50 ± 8 Vol.-% mit natriumhaltigen Kühlmittel (5) gefüllt ist. Durch diesen definierten Füllgrad kann eine optimierte Kühlung des Hohlventils (1) erreicht werden.

Magnetic devices and method for their manufacture

Method for filling with metallic sodium

Provided is a method for filling a stem-side hollow area of an engine valve with metallic sodium. The method includes injecting melted metallic sodium into a cylinder having a larger diameter than an inner diameter of the hollow area of the engine valve, forming a solidified metallic sodium rod having a substantially uniform structure in the cylinder, inserting the metallic sodium into the hollow area of the engine valve through a nozzle having a small diameter, and sealing the engine valve.

Induction welding of rings onto valves for IC engines - via automatic machine using jigs to assemble valve and ring, and to rotate valve during welding

Machine includes a horizontal jig (6) into which a ring (33) rolls via gravity via a shute (5). A valve (34) slides down a second chute (4) so its shank enters ring (33). The valve is next overturned so it rests via its head on a cup (21) fitted on the piston rod of a vertical pneumatic cylinder (PC). The valve and ring are raised by the PC so the valve shank is clamped in, and rotating by, a chuck, while the valve head and ring (33) are in an inductor providing heat for welding. Water is then fed through a ring nozzle to quench the weld; and a reciprocating chute is used to remove the valve (34), which now has a ring (33) welded on its working surface. The cycle is then repeated for the next valve and ring. A heat resisting alloy ring (33) is welded onto the valve.