Engine roughness control means

Details Engine roughness control means Engine roughness control means

1985-08-22

1987-08-04

Argenbright, Tony M.

Internal-combustion engines

Charge forming device

Including means responsive to instantaneous change in engine...

123419, F02D 4104, F02P 515

Patent

active

046838562

ABSTRACT:
A control system for a vehicle engine in which fuel supply quantity is controlled in accordance with the engine roughness level. An engine roughness sensor is provided for detecting engine vibrations and producing a roughness signal which is compared with a reference signal. When the roughness signal is greater than the reference signal, the fuel supply is increased to enrich the air-fuel mixture but, when the roughness signal is smaller than the reference signal, the fuel supply is decreased to make the mixture leaner. The reference signal is smallest in idling operation and stepwisely increased depending on an increase in the load on the engine.

REFERENCES:
patent: 4178891 (1979-12-01), Latsch et al.
patent: 4509484 (1985-04-01), Gertiser

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