Fuel injection control system for internal combustion engine

摘要

The fuel injection control system has a number of sensors (20), which include an air intake volume sensor to give data on the air volume (Qa) taken in by the engine, and a crank angle sensor to give motor speed data. The control (8B) reduces rotary speed changes on external loading, by correcting the fuel feed. The unit (85) to determine a rich mixture generates a signal (RC) when the mixture is richer than a given lower threshold value. The fuel/air ratio is corrected (86) on receipt of the rich mixture signal (RC) with the deviation determined of the lower threshold from the nominal mixture value. The deviation is used to correct (88) the parameters. The control circuit is provided by a microcomputer.