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

1985-11-12

Nelli, Raymond A.

Internal-combustion engines

Charge forming device

Including means responsive to instantaneous change in engine...

123481, 123419, F02B 300, F02M 700

Patent

active

045521131

ABSTRACT:
An i.c. engine fuel control includes a main fuel control which controls fuel flow to the engine in accordance with one or more engine operating parameters. A roughness sensor provides an electrical signal varying with the magnitude of fluctuations in the engine speed and an integrator integrates the error between this signal and a reference signal. Two active clamp circuits operate to limit the excursion of the integrator output which provides a limited authority trim input to the fuel control.

REFERENCES:
patent: 3789816 (1974-02-01), Taplin et al.
patent: 3874171 (1975-04-01), Schmidt et al.
patent: 4138979 (1979-02-01), Taplin
patent: 4170201 (1979-10-01), Camp et al.
patent: 4172433 (1979-10-01), Bianchi et al.
patent: 4195604 (1980-04-01), Taplin
patent: 4241710 (1980-12-01), Pederson, Jr. et al.
patent: 4269156 (1981-05-01), Drellishak
patent: 4294216 (1981-10-01), Abo et al.

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