Patent ID: 7007463

Claim:
An engine fuel injection control system comprising: an operating condition detecting section configured and arranged to detect an operating condition of an engine; a particulate filter configured and arranged in an exhaust passage of the engine to accumulate exhaust particulate matter discharged from the engine; a fuel injection quantity determining section configured and arranged to compare an accelerator request fuel quantity corresponding to an accelerator depression amount with an air fuel ratio request fuel injection quantity determined based on a target air fuel ratio corresponding to the engine operating condition, and to select a smaller one of the accelerator request fuel quantity and the air fuel ratio request fuel injection quantity as a target fuel injection quantity; and a target air fuel ratio adjusting section configured and arranged to adjust the target air fuel ratio to a value substantially equal to an air fuel ratio that provides a maximum torque when the operating condition detecting section detects the engine is operating in a low rotational speed with a full-load condition.