FUEL INJECTION CONTROL CIRCUIT
    86.
    发明专利

    公开(公告)号:AU6307680A

    公开(公告)日:1981-04-16

    申请号:AU6307680

    申请日:1980-10-08

    Inventor: GRAESSLEY W J

    Abstract: An analog computer circuit for controlling a fuel injection system during engine cranking. The fuel injection system has an electrically controllable fuel injector that is intermittently actuated. The analog computer circuit develops a logic level signal having cyclically recurring time intervals that vary depending upon the manner in which a capacitor is charged from a DC voltage supply. Several electrical impedances are selectively placed in circuit with the capacitor and the voltage supply to control its rate of charging during engine cranking.

    FUEL INJECTOR CONTROL
    87.
    发明专利

    公开(公告)号:AU6307580A

    公开(公告)日:1981-04-16

    申请号:AU6307580

    申请日:1980-10-08

    Inventor: GRAESSLEY W J

    Abstract: A fuel injection control system utilizes a microprocessor to calculate and generate one or more logic control signals that determine the duration of the energization time of intermittently energized electromagnetic fuel injectors. The microprocessor has a number of inputs which are indicative of engine operation, such as intake manifold vacuum, engine crankshaft position and speed, engine operating temperature, and perhaps less important parameters. During engine cranking most of these parameters are not available. The invention overcomes this problem with the use of an analog computer that shares circuitry used by the microprocessor when the microprocessor is either in a default mode of operation or when the engine is being cranked.

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