Fuel injection system for an automotive internal combustion engi

Details Fuel injection system for an automotive internal combustion engi Fuel injection system for an automotive internal combustion engi

1978-10-10

1980-09-09

Myhre, Charles J.

Internal-combustion engines

Charge forming device

Fuel injection system

123489, 123493, F02B 304

Patent

active

042211930

ABSTRACT:
A fuel injection system for an automotive internal combustion engine equipped with a fuel cut off control signal generator comprises a smoothing circuit which smoothes a fuel cut off control signal produced in response to engine parameters. The flow rate of fuel injected via injection valves is controlled in accordance with the pulse width of a valve energization signal where the pulse width thereof is further controlled by the voltage of the fuel cut off control signal so that the fuel flow rate decreases and increases exponentially in the same manner as the voltage of the fuel cut off control signal when the fuel flow is cut off and is reestablished. Two monostable multivibrators and two transistors are provided for selectively transmitting and blocking the fuel cut off control signal so as to prevent misfires of the engine when the fuel flow rate is below a predetermined value.

REFERENCES:
patent: 3789816 (1974-02-01), Taplin et al.
patent: 3916865 (1975-11-01), Kiencke et al.
patent: 4019470 (1977-04-01), Asano
patent: 4089313 (1978-05-01), Asano et al.
patent: 4092955 (1978-06-01), Reddy
patent: 4096833 (1978-06-01), Sweet
patent: 4119072 (1978-10-01), Asano
patent: 4126107 (1978-11-01), Harada et al.
patent: 4138979 (1979-02-01), Taplin
patent: 4148283 (1979-04-01), Harada et al.

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