Engine roughness control

Details Engine roughness control Engine roughness control

1987-07-10

1988-10-11

Dolinar, Andrew M.

Internal-combustion engines

Charge forming device

Including means responsive to instantaneous change in engine...

123419, F02D 4114, F02P 5145

Patent

active

047763124

ABSTRACT:
An engine control system having an engine vibration sensor which detects engine vibrations. A control circuit is provided for discriminating engine roughness wherein the engine vibration level is above a predetermined level and for decreasing the fuel supply continuously when engine roughness is not detected, in order to make the mixture leaner, but increasing the fuel supply when engine roughness is detected to make the mixture richer. A detector is provided for detecting a specific engine condition wherein the mixture is enriched for specific purposes. The control circuit is responsive to the output of the engine condition detector and discontinues the roughness control when the specific engine condition is detected.

REFERENCES:
patent: 4422421 (1983-12-01), Ezoe
patent: 4509484 (1985-04-01), Gertiser
patent: 4552113 (1985-11-01), Williams

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