Engine airflow controller with feedback loop compensation for ch

Details Engine airflow controller with feedback loop compensation for ch Engine airflow controller with feedback loop compensation for ch

1995-12-11

1997-09-16

Dolinar, Andrew M.

Internal-combustion engines

Engine speed regulator

Having condition responsive means with engine being part of...

F02D 4114, F02D 4118

Patent

active

056669186

ABSTRACT:
An Electronic Engine Controller (EEC) controls the operation of an electronically controlled throttle. The EEC generates a predicted desired throttle angle value as a function of upstream and downstream air pressure values, an air temperature value and a desired airflow value. A predicted actual throttle angle value is generated as a function of the upstream and downstream air pressure values, an air temperature value and an actual airflow value. A throttle angle difference value is generated as a function of the difference between the predicted desired throttle angle value and the predicted actual throttle angle value. A PID controller is employed to generate a throttle angle change value. The throttle angle change value is then added to the predicted desired throttle angle change value to generate a throttle angle control value, indicative of a position for said throttle. The throttle angle is then altered to a position corresponding to the throttle angle control value.

REFERENCES:
patent: 4881502 (1989-11-01), Kabasin
patent: 5078109 (1992-01-01), Yoshida et al.
patent: 5282449 (1994-02-01), Takahashi et al.

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