Fuel control system for an internal combustion engine

Details Fuel control system for an internal combustion engine Fuel control system for an internal combustion engine

1980-02-27

1982-05-18

Nelli, R. A.

Internal-combustion engines

Charge forming device

Including means responsive to instantaneous change in engine...

123419, 123489, F02D 500, F02B 300, F02P 504

Patent

active

043299601

ABSTRACT:
An i.c. engine fuel control system includes a closed loop roughness control, utilizing a roughness sensor circuit, an integrator which integrates the error between the roughness signal and a reference signal and modifies the fuel flow to the engine via a main fuel control with a variable frequency clock. During acceleration and deceleration the closed loop is interrupted by means of a circuit including two differentiators which are sensitive to throttle opening (speed demand) and actual speed respectively, and switches controlled by these differentiators.

REFERENCES:
patent: 2842108 (1958-07-01), Sanders
patent: 3789816 (1974-02-01), Taplin et al.
patent: 4064846 (1977-12-01), Latsch et al.
patent: 4092955 (1978-06-01), Reddy
patent: 4099493 (1978-07-01), Latsch et al.
patent: 4138979 (1979-02-01), Taplin
patent: 4153013 (1979-05-01), Bianchi et al.
patent: 4172433 (1979-10-01), Bianchi et al.
patent: 4178891 (1979-12-01), Latsch et al.
patent: 4197767 (1980-04-01), Leung
patent: 4271798 (1981-06-01), Seitz et al.

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