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GB1294821A - - Google Patents

Info

Publication number
GB1294821A
GB1294821A GB1294821DA GB1294821A GB 1294821 A GB1294821 A GB 1294821A GB 1294821D A GB1294821D A GB 1294821DA GB 1294821 A GB1294821 A GB 1294821A
Authority
GB
United Kingdom
Prior art keywords
valve
exhaust
gas
reduced
cycled
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
Application number
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 filed Critical
Publication of GB1294821A publication Critical patent/GB1294821A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
    • F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
    • F02D13/0242—Variable control of the exhaust valves only
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
    • F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
    • F02D13/0273—Multiple actuations of a valve within an engine cycle
    • 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
    • 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
    • F02M26/01—Internal exhaust gas recirculation, i.e. wherein the residual exhaust gases are trapped in the cylinder or pushed back from the intake or the exhaust manifold into the combustion chamber without the use of additional passages
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Abstract

1294821 I C engine valve gear TEXACO DEVELOPMENT CORP 4 May 1971 [25 May 1970] 12945/71 Heading F1B The exhaust valve of a four-stroke I C engine is re-opened during the induction stroke to recycle source of the exhaust gas, in order to reduce nitrogen oxide pollutants and unburned hydrocarbons in the exhaust gas emitted. The exhaust valve cam has a main lobe 34 and an additional lobe 38 which re-opens the exhaust valve while the piston is at about the middle of the length of the induction stroke. The lift of the valve is about 12% of the lift due to the main lobe 34. In an example, the nitrogen oxides are reduced to 1000 ppm and the unburned hydrocarbons to 130 ppm. At high load operation the amount of gas re-cycled is reduced due to the higher cylinder pressure compared to the exhaust passage pressure. At idling speed, the amount of gas re-cycled can be reduced by employing an hydraulic valve lifter and adjusting the breakdown rate so that the additional actuation of the valve is cancelled.
GB1294821D 1970-05-25 1971-05-04 Expired GB1294821A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US4023270A 1970-05-25 1970-05-25

Publications (1)

Publication Number Publication Date
GB1294821A true GB1294821A (en) 1972-11-01

Family

ID=21909870

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1294821D Expired GB1294821A (en) 1970-05-25 1971-05-04

Country Status (9)

Country Link
BR (1) BR7103132D0 (en)
CA (1) CA952778A (en)
CH (1) CH530554A (en)
DE (2) DE7119909U (en)
ES (1) ES391375A1 (en)
FR (1) FR2091797A5 (en)
GB (1) GB1294821A (en)
NL (1) NL7107046A (en)
SE (1) SE360704B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997012127A1 (en) * 1995-09-27 1997-04-03 Orbital Engine Company (Australia) Pty. Limited Valve timing for four stroke internal combustion engines
FR2868481A1 (en) * 2004-03-31 2005-10-07 Inst Francais Du Petrole METHOD FOR CONTROLLING THE RECIRCULATION OF EXHAUST GASES OF AN INTERNAL COMBUSTION-BASED SUPERVISOR ENGINE AND ENGINE USING SUCH A METHOD

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2448032A1 (en) * 1979-02-05 1980-08-29 Semt PROCESS FOR IMPROVING THE EFFICIENCY OF AN INTERNAL COMBUSTION ENGINE, ESPECIALLY SUPERCHARGED
IT1136804B (en) * 1981-03-12 1986-09-03 Francesco Foglietti INTERNAL COMBUSTION ENGINE WITH SIMPLIFIED DISTRIBUTION
DE3401362C3 (en) * 1983-02-04 1998-03-26 Fev Motorentech Gmbh Process for controlling four-stroke piston internal combustion engines
AT402432B (en) * 1988-02-25 1997-05-26 Avl Verbrennungskraft Messtech INTERNAL COMBUSTION ENGINE
FR2668541B1 (en) * 1990-10-30 1994-10-14 Inst Francais Du Petrole PROCESS FOR REDUCING HARMFUL COMPONENTS IN EXHAUST GASES AND THE ENGINE THAT IMPLEMENTS IT.
DE4300337C2 (en) * 1993-01-11 1995-10-19 Meta Motoren Energietech Residual gas control in internal combustion engines
EP0814245B1 (en) * 1996-06-20 2001-12-19 Volkswagen Aktiengesellschaft Method and device for operating a spark ignited piston internal combustion engine
US8215292B2 (en) 1996-07-17 2012-07-10 Bryant Clyde C Internal combustion engine and working cycle
DE19635886A1 (en) * 1996-09-04 1998-03-05 Meta Motoren Energietech Method for improving the combustion process of an internal combustion engine and internal combustion engine
DE19914909A1 (en) * 1999-04-01 2000-10-05 Bayerische Motoren Werke Ag Cam shaft for 4-stroke IC engine has cams opening intake valves/ejection valves during ejection/intake strokes, for adjustment of valve opening timing/period during stroke
EP1191211B1 (en) 2000-09-21 2004-08-11 AVL List GmbH Method for operating an internal combustion engine
EP1628014B1 (en) 2004-08-19 2014-12-03 Perkins Engines Company Limited Exhaust manifold arrangement

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997012127A1 (en) * 1995-09-27 1997-04-03 Orbital Engine Company (Australia) Pty. Limited Valve timing for four stroke internal combustion engines
US5927238A (en) * 1995-09-27 1999-07-27 Orbital Engine Company (Australia) Pty. Limited Valve timing for four stroke internal combustion engines
FR2868481A1 (en) * 2004-03-31 2005-10-07 Inst Francais Du Petrole METHOD FOR CONTROLLING THE RECIRCULATION OF EXHAUST GASES OF AN INTERNAL COMBUSTION-BASED SUPERVISOR ENGINE AND ENGINE USING SUCH A METHOD

Also Published As

Publication number Publication date
BR7103132D0 (en) 1973-04-24
DE7119909U (en) 1975-12-18
FR2091797A5 (en) 1972-01-14
ES391375A1 (en) 1974-08-01
CA952778A (en) 1974-08-13
DE2125368A1 (en) 1971-12-09
NL7107046A (en) 1971-11-29
CH530554A (en) 1972-11-15
SE360704B (en) 1973-10-01

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees