Inventor
KAYANUMA NOBUAKI
JP27 patents
Patents
27 patentsUS5056494AOct 15, 1991
System for treating vaporized fuel in an internal combustion engine
TOYOTA MOTOR CO LTD165 citations99
US5245973ASep 21, 1993
Failure detection device for evaporative fuel purge system
TOYOTA MOTOR CO LTD54 citations96
US5143035ASep 1, 1992
Apparatus for detecting malfunction in evaporated fuel purge system
TOYOTA MOTOR CO LTD86 citations96
US4964272AOct 23, 1990
Air-fuel ratio feedback control system including at least downstreamside air-fuel ratio sensor
TOYOTA MOTOR CO LTD71 citations96
US4739614AApr 26, 1988
Double air-fuel ratio sensor system in internal combustion engine
TOYOTA MOTOR CO LTD70 citations96
US4667636AMay 26, 1987
Fuel injection type internal combustion engine
TOYOTA MOTOR CO LTD59 citations96
US5088281AFeb 18, 1992
Method and apparatus for determining deterioration of three-way catalysts in double air-fuel ratio sensor system
TOYOTA MOTOR CO LTD111 citations95
US5165230ANov 24, 1992
Apparatus for determining deterioration of three-way catalyst of internal combustion engine
TOYOTA MOTOR CO LTD77 citations93
US5282383AFeb 1, 1994
Method and apparatus for determining deterioration of three-way catalysts in double air-fuel ratio sensors system
TOYOTA MOTOR CO LTD21 citations92
US5207057AMay 4, 1993
Air-fuel ratio control device for an engine
TOYOTA MOTOR CO LTD32 citations92
US5181499AJan 26, 1993
Apparatus for diagnosing abnormality in fuel injection system and fuel injection control system having the apparatus
TOYOTA MOTOR CO LTD21 citations92
US5119631AJun 9, 1992
Apparatus and method for detecting abnormalities in a secondary air supplier
TOYOTA MOTOR CO LTD43 citations92
US4570590AFeb 18, 1986
Internal combustion engine with multiple intake valves
TOYOTA MOTOR CO LTD26 citations92
US5230319AJul 27, 1993
Apparatus for detecting malfunction in evaporated fuel purge system
TOYOTA MOTOR CO LTD30 citations90
US4693076ASep 15, 1987
Double air-fuel ratio sensor system having improved response characteristics
TOYOTA MOTOR CO LTD24 citations82
US4059081ANov 22, 1977
EVAP system-provided throttle valve control unit
TOYOTA MOTOR CO LTD23 citations82
USRE37250EJul 3, 2001
Apparatus for detecting malfunction in evaporated fuel purge system
TOYOTA MOTOR CO LTD8 citations74
US5245865ASep 21, 1993
Device for determining misfiring cylinder of multicylinder engine
TOYOTA MOTOR CO LTD18 citations74
US5069035ADec 3, 1991
Misfire detecting system in double air-fuel ratio sensor system
TOYOTA MOTOR CO LTD15 citations74
US4809501AMar 7, 1989
Double air-fuel ratio sensor system having improved exhaust emission characteristics
TOYOTA MOTOR CO LTD18 citations74
US4796425AJan 10, 1989
Double air-fuel ratio sensor system carrying out learning control operation
TOYOTA MOTOR CO LTD19 citations74
US4745741AMay 24, 1988
Double air-fuel ratio sensor system having improved response characteristics
TOYOTA MOTOR CO LTD19 citations74
US4729219AMar 8, 1988
Double air-fuel ratio sensor system having improved response characteristics
TOYOTA MOTOR CO LTD13 citations74
US4703619ANov 3, 1987
Double air-fuel ratio sensor system having improved response characteristics
TOYOTA MOTOR CO LTD8 citations74
US5203870AApr 20, 1993
Method and apparatus for detecting abnormal state of evaporative emission-control system
TOYOTA MOTOR CO LTD18 citations73
US5313925AMay 24, 1994
Apparatus for detecting malfunction in fuel evaporative prurge system
TOYOTA MOTOR CO LTD11 citations71
US4351296ASep 28, 1982
Apparatus for controlling deceleration of an internal combustion engine
TOYOTA MOTOR CO LTD6 citations63