SYSTEM FOR CONTROLLING FUEL-FLOW RATE AT THE TIME OF FULL- LOAD OPERATION

摘要

PURPOSE:To prevent drop of the output torque of an engine, by detecting change of an injection timing signal given from an electronic timer, and driving an actuator of a governor for controlling the fuel-flow rate in case that delay of the fuel injection timing is caused from the full-load torque condition at the time of steady operation of the engine. CONSTITUTION:A control system of this invention comprises an actuator 2 of a governor for controlling the fuel-flow rate and an electronic timer 1 for controlling the fuel injection timing. An engine-speed signal S1 given from an engine-speed sensor 4, an injection timing signal S3 given from a timing sensor 1a, etc. are furnished to an electronic control unit 6. In case that the injection timing signal S3 is delayed, an engine is controlled to have full-load torque characteristics at the time of steady operation of the same by applying a driving signal to the governor actuator 2 from the electronic control unit 6 and increasing the fuel-flow rate according to the engine speed. With such an arrangement, it is enabled to prevent deviation of the injection timing, for instance, at the time of starting a vehicle having a diesel engine mounted thereon and to thereby prevent drop of the output torque of the vehicle.