System and method of engine calibration

Details System and method of engine calibration System and method of engine calibration

1986-05-01

1988-01-19

Noland, Tom

Measuring and testing

Simulating operating condition

Marine

36443105, G01M 1900

Patent

active

047197943

ABSTRACT:
The open loop calibration of the fuel delivery system of an internal combustion engine is recalibrated based on the response of the engine idle speed as the air/fuel ratio of the air and fuel mixture supplied to the engine is varied. When the engine is at idle, the air/fuel ratio of the mixture supplied to the engine is decreased until a peak engine idle speed is detected. Thereafter, the air/fuel ratio of the mixture is increased until the engine speed decreases from the detected peak value by an amount corresponding to the desired value of a controlled parameter such as the amount of CO in the exhaust gases.

REFERENCES:
patent: 4164142 (1979-08-01), Blanke
patent: 4170040 (1979-10-01), Leblanc et al.
patent: 4307450 (1981-12-01), Carp et al.
patent: 4309971 (1982-01-01), Chiesa et al.
patent: 4437340 (1984-03-01), Csere et al.
"OPEL Carburetion and Tune Up"; OPEL Training Manual, Oct. 1970, pp. 19 and 41, by OPEL.

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