Nissan Motor Company Limited

Takanobu Aikawa

Hiroyuki Itoyama

Jin Yokoyama

To prevent an increase in torque when the fixed state of a throttle valve is released. When diagnostics reads fixed diagnostics flagindicating that the throttle valve is in a fixed state, control value ATVO that can maintain throttle aperture RTVO is set (S, S) based on detected value RTVO for the throttle aperture in the current fixed state, fuel injection volume TiO that is calculated according to new air volume Q is secured at fuel injection volume TiL or greater in order to achieve the engine torque for when fail-safe control is executed, and when air-fuel ratio&#x3bb;is less than the lower limit value&#x3bb;L, causing an increase in the amount of smoke, control is executed to suppress the occurrence of said smoke.

Internal combustion engine fail-safe control device and method

In a diesel engine ( ) provided with an exhaust gas recirculation mechanism ( ), a fuel injection timing is calculated by considering a delay of air aspirated by the cylinders of the engine ( ) and a delay of exhaust gas recirculation. By performing fuel injection based on this fuel injection timing, conditions of combustion in a cylinder of the engine ( ) are improved.

Fuel injection control device for a diesel engine

An apparatus controlling a fuel injection quantity at the time of starting a Diesel engine and a method are disclosed. The apparatus and method detect a water temperature at the time of starting the Diesel engine, detect an engine speed at the time of starting the Diesel engine, set a starting fuel injection quantity based on the water temperature at the time of starting the Diesel engine and the engine speed at the time of starting the Diesel engine, detect a line pressure of an automatic transmission mounted to the Diesel engine, and correct the starting fuel injection quantity based on the line pressure of the automatic transmission.

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Fujisawa, Japan

Takanobu Aikawa