Inventor

NAGAI TOSHINARI

JP48 patents

⚠️ This page may combine multiple inventors who share the name “NAGAI TOSHINARI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

NAGAI TOSHINARI

TOYOTA MOTOR CO LTD

Air-fuel ratio control apparatus of internal combustion engine

Air-fuel ratio control system for internal combustion engine and control method therof

Double air-fuel ratio sensor system in internal combustion engine

Device for judging deterioration of catalyst of engine

Device for judging deterioration of catalyst of engine

Apparatus for determining an altitude condition of an automotive vehicle

Apparatus for controlling heater for oxygen sensor

Apparatus for controlling heater for oxygen sensor and fuel control apparatus using the same

Catalyst deterioration detecting apparatus and method

Air-fuel ratio control apparatus for internal combustion engine

Catalyst degradation determining method

Catalyst degradation determining method

Air-fuel ratio control apparatus of internal combustion engine

Emission control apparatus of internal combustion engine and control method for the emission control apparatus

Automotive onboard load control apparatus and method

Apparatus for controlling air-fuel ratio of air-fuel mixture to an engine having an evaporated fuel purge system

Double air-fuel ratio sensor system carrying out learning control operation

Double air-fuel ratio sensor system having improved response characteristics

Internal combustion engine with multiple intake valves

Exhaust purifier for internal combustion engine

Exhaust purifier of internal combustion engine

Exhaust purification apparatus for internal combustion engine

Exhaust gas control apparatus and exhaust gas purification method for internal combustion engine

Air-fuel ratio control apparatus of internal combustion engine

Device for detecting deterioration of catalytic converter for cleaning exhaust gases

Air-fuel ratio control device for an internal combustion engine

Exhaust gas purification system for internal combustion engine

Double air-fuel ratio sensor system carrying out learning control operation

Double air-fuel ratio sensor system having improved response characteristics

Device for judging the deterioration of a catalyst of an engine

System for controlling air-fuel ratio in internal combustion engine and method of the same

Method and apparatus for controlling air-fuel ratio in internal combustion engine

Double air-fuel ratio sensor system having improved exhaust emission characteristics

Double air-fuel ratio sensor system having improved exhaust emission characteristics

Double air-fuel ratio sensor system carrying out learning control operation

Double air-fuel ratio sensor system carrying out learning control operation

Double air-fuel ratio sensor system having improved exhaust emission characteristics

Double air-fuel ratio sensor system having improved response characteristics

Double air-fuel ratio sensor system having improved response characteristics

Double air-fuel ratio sensor system carrying out learning control operation

Catalyst degradation determining method

Fuel-injection control apparatus for an engine

Double air-fuel ratio sensor system carrying out learning control operation

Double air-fuel ratio sensor system having improved response characteristics

Apparatus for disposing of fuel vapor

Control device of internal combustion engine and method of judging failure of sensor

Apparatus for disposing of fuel-vapor

KAMOTO AKIRA

Catalyst degradation determining method