US Patent No: 4,224,912

Number of patents in Portfolio can not be more than 2000

Exhaust gas recirculation system with an auxiliary valve

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Abstract

In an internal combustion engine which incorporates an exhaust gas recirculation system which has an exhaust gas recirculation flow control valve provided at a middle position of the exhaust gas recirculation passage, the control valve being operated depending upon comparison between target and actual values of a control parameter with regard to the amount of exhaust gas recirculation, an auxiliary valve is provided in the exhaust gas recirculation passage in series with the exhaust gas recirculation flow control valve so as to control the cross-sectional area of the exhaust gas recirculation passage in accordance with the opening amount of the throttle valve provided in the intake passage of the engine.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
TOYOTA JIDOSHA KOGYO KABUSHIKI KAISHATOYOTA1091

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Tanaka, Masaaki Yokohama, JP 135 1020

Cited Art

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Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
FORD GLOBAL TECHNOLOGIES, INC. (4)
4,924,840 Fast response exhaust gas recirculation (EGR) system 37 1988
6,014,959 Engine with EGR management system 3 1998
6,095,123 Valve and valve control method 7 1999
6,253,749 Valve and valve control method 6 2000
 
HALDEX HYDRAULICS AB (3)
6,886,545 Control scheme for exhaust gas circulation system 14 2004
7,261,096 Movable sleeve exhaust gas recirculation system 4 2005
7,426,923 Exhaust gas recirculation system for gasoline engines 2 2006
 
CUMMINS ENGINE COMPANY, INC. (2)
5,533,489 Exhaust gas recirculation control system 7 1995
5,611,204 EGR and blow-by flow system for highly turbocharged diesel engines 67 1996
 
DENSO CORPORATION (2)
5,746,190 EGR system using perpendicularly arranged control valve 14 1996
8,261,725 Low pressure EGR apparatus 0 2010
 
AISAN KOGYO KABUSHIKI KAISHA (1)
4,366,799 Exhaust gas recirculator 10 1981
 
ALM DEVELOPMENT, INC. (1)
6,363,708 Gas turbine engine 5 2000
 
CATERPILLAR INC. (1)
7,237,531 Throttle and recirculation valves having a common planetary drive 3 2005
 
FIRMA CARL FREUDENBERG (1)
5,213,087 Device for supplying combusted gases to the combustion chamber of an internal combustion engine at a controlled rate 9 1991
 
GENERAL MOTORS CORPORATION (1)
4,399,799 Engine control suitable for exhaust gas recirculation control 12 1982
 
NIPPONDENSO CO., LTD. (1)
5,562,085 Device for controlling number of operating cylinders of an internal combustion engine 11 1995
 
ROBERT BOSCH GMBH (1)
6,910,470 Method for operating an internal combustion engine especially of a motor vehicle 0 2002
 
SOUTHWEST RESEARCH INSTITUTE (1)
7,748,976 Use of recirculated exhaust gas in a burner-based exhaust generation system for reduced fuel consumption and for cooling 0 2006
 
TOYO KOGYO CO., LTD. (1)
4,399,791 Air-fuel mixture control for automobile engine having fuel injection system 18 1981
 
OTHER [CHECK PATENT PROFILE FOR ASSIGNMENT INFORMATION] (1)
7,334,564 Throttle and inlet valves for 8 stroke and 4 stroke engines 3 2004