EP0701048B1 - Culasse - Google Patents

Culasse Download PDF

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Publication number
EP0701048B1
EP0701048B1 EP95306248A EP95306248A EP0701048B1 EP 0701048 B1 EP0701048 B1 EP 0701048B1 EP 95306248 A EP95306248 A EP 95306248A EP 95306248 A EP95306248 A EP 95306248A EP 0701048 B1 EP0701048 B1 EP 0701048B1
Authority
EP
European Patent Office
Prior art keywords
valve
cylinder head
exhaust
cylinder
port
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP95306248A
Other languages
German (de)
English (en)
Other versions
EP0701048A1 (fr
Inventor
George Farenden
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ford Werke GmbH
Ford France SA
Ford Motor Co Ltd
Ford Motor Co
Original Assignee
Ford Werke GmbH
Ford France SA
Ford Motor Co Ltd
Ford Motor Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ford Werke GmbH, Ford France SA, Ford Motor Co Ltd, Ford Motor Co filed Critical Ford Werke GmbH
Publication of EP0701048A1 publication Critical patent/EP0701048A1/fr
Application granted granted Critical
Publication of EP0701048B1 publication Critical patent/EP0701048B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D21/00—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas
    • F02D21/06—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas peculiar to engines having other non-fuel gas added to combustion air
    • F02D21/08—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas peculiar to engines having other non-fuel gas added to combustion air the other gas being the exhaust gas of engine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/24—Cylinder heads
    • F02F1/42—Shape or arrangement of intake or exhaust channels in cylinder heads
    • F02F1/4214—Shape or arrangement of intake or exhaust channels in cylinder heads specially adapted for four or more valves per cylinder
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/17—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the intake system
    • F02M26/20—Feeding recirculated exhaust gases directly into the combustion chambers or into the intake runners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/41—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories characterised by the arrangement of the recirculation passage in relation to the engine, e.g. to cylinder heads, liners, spark plugs or manifolds; characterised by the arrangement of the recirculation passage in relation to specially adapted combustion chambers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/65—Constructional details of EGR valves
    • F02M26/70—Flap valves; Rotary valves; Sliding valves; Resilient valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B1/00—Engines characterised by fuel-air mixture compression
    • F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
    • F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/24—Cylinder heads
    • F02F2001/244—Arrangement of valve stems in cylinder heads
    • F02F2001/245—Arrangement of valve stems in cylinder heads the valve stems being orientated at an angle with the cylinder axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/36—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with means for adding fluids other than exhaust gas to the recirculation passage; with reformers

Definitions

  • the present invention relates to a cylinder head for an internal combustion engine.
  • the cylinder head houses the inlet and exhaust ports for the cylinders (combustion chambers) of an engine.
  • the cylinder head also houses valves for controlling the entry of combustible fluid, for example a petrol/air mixture, through the inlet port, and the venting of exhaust gases through the exhaust port.
  • combustible fluid for example a petrol/air mixture
  • the cylinder head is provided with one or more external pipes which connect the exhaust ports of the cylinders to the inlet ports so that a proportion of the exhaust gases produced by the engine can be fed back into the cylinders.
  • This is known an exhaust gas recirculation (EGR).
  • EGR helps to reduce the levels of unwanted noxious exhaust materials, for example oxides of nitrogen (NOX), by reducing the temperature of the combustion and by promoting the combustion of fuel and/or carbon monoxide present in the exhaust gas.
  • the quantity of exhaust gas which is fed back is controlled by an EGR valve, which is in turn controlled according, inter alia , to the temperature of the engine.
  • EGR as herein described is quite different from the phenomenon known as "internal EGR", wherein exhaust gas flows directly from the exhaust port of a cylinder, through the cylinder, to its intake port. Internal EGR only occurs during the short time when the inlet and exhaust valves are open simultaneously.
  • SAI secondary air injection - SAI
  • SAI is of use, particularly, when the exhaust pipe is provided with a catalytic converter which needs to operate at a relatively high temperature in order to function at maximum efficiency. When the engine is first started, and is running coolly, burning of exhaust gases helps to get the catalytic converter up to its optimum working temperature.
  • EGR and SAI may both be operated in an engine by means of an open loop arrangement whereby certain preset operating conditions initiate EGR, and others initiate SAI. Useful descriptions of EGR and SAI are given in US patent numbers 4 170 112 and 5 271 221.
  • European Patent Application number 0 543 704 comprising the features of the preamble of claim 1 describes an internal connection between an exhaust port and an inlet port, into which fuel is injected so that hot exhaust gases help volatilise the fuel. Each internal connection is controlled by a separate valve 8.
  • the above invention eliminates the need for external pipes and valves, but it requires a valve and associated separate control for each passageway and is therefore relatively complex in construction.
  • a cylinder head for an internal combustion engine as specified in claim 1.
  • each inlet port is connected to an associated exhaust port via a single gallery in the cylinder head, EGR and/or SAI may be controlled by the operation of a single valve in the gallery, allowing simplified manufacture and operation.
  • the invention may be used with all internal combustion engines.
  • engines for example petrol or diesel engines, and engines with multiple cylinders.
  • Each passageway may connect an exhaust port to an inlet port of the same cylinder.
  • the passageway may connect the exhaust port of one cylinder to the inlet port of another cylinder. This may allow the exhaust emission from one cylinder to be better synchronised with the inlet of fuel/air of the other cylinder to which the exhaust port is connected.
  • each passageway is adapted to be used to supply secondary air to the exhaust gases for SAI.
  • the secondary air is supplied from an air cleaner.
  • the secondary air may be supplied via one or more reed valves such as are commonly used for external application.
  • a secondary air supply may be achieved by the use of a branched passageway in which a first end connects with an inlet port, a second end connects with an exhaust port, and a third end connects with a source of secondary air.
  • the valve member is located in the gallery at the junction of the branches of each passageway and is adapted selectively to connect either the inlet port to the exhaust port, for EGR, or the exhaust port to the secondary air source, for SAI.
  • Any suitable control valve may be used for this; for example an axial "shuttle" valve, a rotary sleeve valve, or a rotary sluice-gate type of valve.
  • the valve may be controlled by conventional means; for example by bellcrank and motor for rotary valves, or directly for an axial valve.
  • a rotary or axial stepper motor or a vacuum motor may also be used.
  • the valve member is preferably continually variable for controlling gas flow rates in EGR or SAI modes, depending on the speed and load at which the engine is running. For example if 10% EGR is required (ie 10% of the gas intake into the cylinder is recycled exhaust gas), at around 1500 rpm the valve member may be open only to a small extent, while at around 4000 rpm the a valve member may be almost fully open.
  • the gallery and passageways may be cast during formation of the cylinder head, or drilled after casting of the cylinder head.
  • the cylinder head may be supplied separately, or as part of an assembled engine.
  • the invention therefore also provides an internal combustion engine which has a cylinder head as hereinbefore described.
  • Figure 1 shows part of a cylinder head which encloses the top of a cylinder 10.
  • Combustible fluid eg petrol/air
  • inlet port 2 e.g petrol/air
  • poppet valve 6 e.g., a poppet valve 6
  • Exhaust gases are vented from the cylinder 10 via an exhaust port 4, and the passage of exhaust gases is controlled by means of a poppet valve 8.
  • Timing of the valves 6 and 8 is controlled by means of cams on an overhead camshaft (not shown).
  • the cylinder head is provided with a gallery 14 which houses a rotary valve 16. Rotation of the valve opens or closes a connection between a duct 12 which connects the gallery 14 with the exhaust port 4, and a duct 18 which connects the gallery 14 with the inlet port 2.
  • a duct 12 which connects the gallery 14 with the exhaust port 4
  • a duct 18 which connects the gallery 14 with the inlet port 2.
  • Figure 2 is a schematic view from the underneath (flame face) of a cylinder head.
  • the cylinder 10 has two inlet ports 2 and two exhaust ports 4.
  • the gallery 14 is disposed along the cylinder head and houses a valve for each pair of inlet and exhaust ports.
  • Each inlet port 2 is connected to a corresponding exhaust port 4 by a passageway comprising the ducts 12 and 18, and the gallery 14.
  • the duct 12 terminates in a port 20 in the wall of the exhaust port 4, and the duct 18 terminates in a corresponding port 22 in the wall of the inlet port 2.
  • the gallery 14 may optionally be connected to a third duct 24 which is connected to a source of secondary air for SAI.
  • a third duct 24 which is connected to a source of secondary air for SAI. Examples of suitable valve arrangements for EGR or SAI are shown in Figures 3 to 5.
  • FIG 3 shows the operation of a rotary valve 16 in the valve gallery 14.
  • the gallery 14 is connected to a duct 12 which leads to the exhaust port 4, a duct 18 which leads to the inlet port 2, and a duct 24 which leads to a secondary air source.
  • exhaust gases can pass from the exhaust duct 12 to the inlet duct 18.
  • the secondary air duct 24 is blocked off.
  • the valve 16 in the SAI position shown in Figure 3b air can flow from the secondary air duct 24 to the exhaust port via the exhaust duct 12.
  • the inlet duct 18 is blocked off.
  • the valve 16 will generally be in the SAI position when the engine is first started up, so as to burn exhaust gases and help to heat up a catalytic converter in the exhaust pipe.
  • valve 16 When the engine is warmed up, the valve 16 may then be turned to the EGR position. It is also possible however to turn the valve 16 so as to block off communication between any of the ducts, thus preventing both EGR and SAI.
  • the valve 16 may be wholly or partially opened to regulate the gas flow in the EGR or SAI positions.
  • valve shown in Figure 4 operates in a similar rotary manner to the valve of Figure 3, but it uses a differently shaped a valve member 16a.
  • Figure 5 shows a linear shuttle valve which comprises two valve members 26 and 28, connected by a rod 30.
  • the valve is housed in the galley 14 which is connected to the exhaust duct 12, the inlet duct 18, and the secondary air duct 24.
  • the valve has other similar valve members connected to the rod 30 associated with the exhaust, inlet and secondary air ducts of another inlet and associated exhaust port (not shown). Movement of the rod 30 in the gallery 14 therefore controls EGR and/or SAI for a plurality of inlet and exhaust ports in the cylinder.
  • valve members 26 and 28 isolate the ducts 12 and 18 from the rest of the gallery 14, and exhaust gases 32 flow from the exhaust duct 12 through the inlet duct 18.
  • valve in the SAI position shown in Figure 5b the valve members isolate the ducts 12 and 24 from the rest of the gallery and air 34 flows from the secondary air duct 24 through the exhaust duct 12.
  • the valve position is variable in either the EGR or SAI positions to control the rate of EGR or SAI gas flow.
  • the invention therefore provides a cylinder head which may be used to provide low cost EGR and SAI in an engine, and which reduces the risk of leaks in these processes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Claims (5)

  1. Culasse destinée à un moteur à combustion interne, laquelle culasse comprend :
    a) une pluralité d'orifices d'admission (2) destinés à un cylindre (10),
    b) une pluralité d'orifices d'échappement (4) destinés à un cylindre (10),
    c) une pluralité de conduits (12, 18) contenus entièrement à l'intérieur de la culasse, dont chacun relie un orifice d'échappement (4) à un orifice d'admission (2), et dont chacun est muni d'un élément d'obturateur (16, 26, 28) afin de commander le passage de fluide,
       caractérisée en ce que la culasse comprend en outre
    d) un passage (14) qui est disposé à l'intérieur de la culasse et qui loge les éléments d'obturateur (16, 26, 28),
       et en ce que les éléments d'obturateur (16, 26, 28) font partie d'un seul distributeur, dont la mise en oeuvre commande le passage de fluide entre chaque orifice d'admission (2) et orifice d'échappement associé (4).
  2. Culasse selon la revendication 1, caractérisée en ce que pour chaque conduit (12, 18), un conduit d'air secondaire (24) est prévu à la jonction du conduit (12, 18) et du passage (14), de sorte que l'actionnement sélectif de l'élément d'obturateur (16, 26, 28) permet le passage de fluide entre l'orifice d'admission (2) et l'orifice d'échappement (4) ou bien entre l'orifice d'échappement (4) et le conduit d'air secondaire (24).
  3. Culasse selon la revendication 1 ou la revendication 2, dans laquelle le distributeur est un distributeur à tiroir cylindrique linéaire.
  4. Culasse selon l'une quelconque des revendications précédentes, dans laquelle les conduits relient l'orifice d'échappement d'un premier cylindre à l'orifice d'admission d'un autre cylindre.
  5. Moteur dans lequel est montée une culasse selon l'une quelconque des revendications précédentes.
EP95306248A 1994-09-10 1995-09-07 Culasse Expired - Lifetime EP0701048B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9418306 1994-09-10
GB9418306A GB2292975A (en) 1994-09-10 1994-09-10 I.c. engine cylinder head exhaust recirculation

Publications (2)

Publication Number Publication Date
EP0701048A1 EP0701048A1 (fr) 1996-03-13
EP0701048B1 true EP0701048B1 (fr) 1998-12-16

Family

ID=10761179

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95306248A Expired - Lifetime EP0701048B1 (fr) 1994-09-10 1995-09-07 Culasse

Country Status (3)

Country Link
EP (1) EP0701048B1 (fr)
DE (1) DE69506645T2 (fr)
GB (1) GB2292975A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6752133B2 (en) 2000-06-28 2004-06-22 Volvo Lastvognar Ab Internal combustion engine with exhaust gas recirculation
WO2018051260A1 (fr) * 2016-09-15 2018-03-22 Tvs Motor Company Limited Système de recirculation des gaz d'échappement destiné à un moteur

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19531875C1 (de) * 1995-08-30 1996-09-19 Daimler Benz Ag Zylinderkopf für eine flüssigkeitsgekühlte, mehrzylindrische Brennkraftmaschine
AT3671U1 (de) * 1997-01-23 2000-06-26 Avl List Gmbh Brennkraftmaschine mit innerer verbrennung
DE19810840A1 (de) * 1998-03-12 1999-09-16 Bayerische Motoren Werke Ag Mehrzylindrige Brennkraftmaschine mit Abgasrückführung
DE19900640C1 (de) * 1999-01-11 2000-05-18 Siemens Ag Abgasrückführanlage für eine mehrzylindrige Brennkraftmaschine
GB9927087D0 (en) * 1999-11-17 2000-01-12 Rover Group Cylinder head for a multi-cylinder in-line combustion engine having secodary air supply system
DE10062169A1 (de) * 2000-12-14 2002-06-20 Volkswagen Ag Brennkraftmaschine mit Abgasrückführung
DE10210202C1 (de) * 2002-03-07 2003-11-13 Man B & W Diesel Ag Hubkolbenbrennkraftmaschine
DE102005059060A1 (de) * 2005-12-08 2007-07-05 Deutz Ag Abgasrückführung bei einer Brennkraftmaschine
FR2905424B1 (fr) * 2006-09-05 2008-10-31 Renault Sas Dispositif de distribution de gaz pour un circuit egr, refroidisseur et procede de commande.
FR2909718B1 (fr) 2006-12-11 2009-02-27 Jean Melchior Moteur a combustion interne suralimente
DE102008063934A1 (de) * 2008-12-19 2010-06-24 Volkswagen Ag Brennkraftmaschine mit Abgasrückführung
CN101846012A (zh) * 2010-05-14 2010-09-29 隆鑫工业有限公司 内燃机气缸头的内置废气再循环结构
US20140014078A1 (en) * 2012-07-11 2014-01-16 GM Global Technology Operations LLC Engine including internal egr
JP6079405B2 (ja) * 2013-04-19 2017-02-15 スズキ株式会社 車両用エンジンの排気ガス還流装置
FR3035151B1 (fr) 2015-04-16 2017-04-21 Ifp Energies Now Dispositif integre a une culasse pour le controle d'une quantite d'air introduit a l'admission d'un moteur a combustion interne suralimente et procede utilisant un tel dispositif.
DE102016123375A1 (de) * 2016-12-02 2018-06-07 Volkswagen Aktiengesellschaft Brennkraftmaschine mit einem Zylinderkopf sowie mit einem Sekundärluftsystem
FR3078365B1 (fr) * 2018-02-28 2020-05-22 Renault S.A.S Dispositif de controle et de gestion de l'injection d'air a l'echappement

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0543704A1 (fr) * 1991-11-18 1993-05-26 Institut Francais Du Petrole Procédé et dispositif pour favoriser la vaporisation de carburant dans un moteur à combustion interne

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JPS5842571Y2 (ja) * 1975-12-12 1983-09-27 日産自動車株式会社 ジドウシヤヨウエンジンノ ニジクウキキヨウキユウソウチ
JPS6027806B2 (ja) 1977-07-23 1985-07-01 トヨタ自動車株式会社 内燃機関の排気ガス浄化装置
DE2750537A1 (de) * 1977-11-11 1979-05-17 Audi Nsu Auto Union Ag Verfahren zum vermindern des verbrennungsgeraeusches von dieselmotoren im leerlauf sowie vorrichtung zum durchfuehren des verfahrens
JPS5793616A (en) * 1980-12-03 1982-06-10 Honda Motor Co Ltd Exhaust purifier for internal combustion engine
JPS5949755U (ja) * 1982-09-27 1984-04-02 本田技研工業株式会社 内燃エンジン
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DE4027963C1 (en) * 1990-09-04 1991-10-24 Bayerische Motoren Werke Ag, 8000 Muenchen, De IC piston engine with several inlet valves - has exhaust gas return and fresh gas turbulence system as passages eccentrically opening into inlet duct(s)
FR2667649B1 (fr) * 1990-10-09 1993-01-22 Peugeot Dispositif d'insufflation d'air dans le circuit d'echappement.
FR2668541B1 (fr) * 1990-10-30 1994-10-14 Inst Francais Du Petrole Procede pour reduire les composants nocifs dans les gaz d'echappement et moteur qui le met en óoeuvre.
US5271221A (en) 1992-12-07 1993-12-21 Ford Motor Company Integrated feedback controlled secondary air injection and egr

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0543704A1 (fr) * 1991-11-18 1993-05-26 Institut Francais Du Petrole Procédé et dispositif pour favoriser la vaporisation de carburant dans un moteur à combustion interne

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6752133B2 (en) 2000-06-28 2004-06-22 Volvo Lastvognar Ab Internal combustion engine with exhaust gas recirculation
WO2018051260A1 (fr) * 2016-09-15 2018-03-22 Tvs Motor Company Limited Système de recirculation des gaz d'échappement destiné à un moteur

Also Published As

Publication number Publication date
GB9418306D0 (en) 1994-11-02
DE69506645D1 (de) 1999-01-28
EP0701048A1 (fr) 1996-03-13
DE69506645T2 (de) 1999-05-12
GB2292975A (en) 1996-03-13

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