Document Type and Number:
Japanese Patent JPH0361137
Kind Code:
U
Abstract:
An intake air amount control system for an internal combustion engine includes a control valve for regulating the amount of intake air supplied through the intake pipe to the engine. An ECU determines the difference between a desired idling rotational speed of the engine and an actual rotational speed of same and feedback-controls the control valve by means of a control amount responsive to the determined difference such that the actual rotational speed becomes equal to the desired idling rotational speed. The ECU learns a reference value of the control amount by calculating an average value of values of the control amount applied during the feedback control. The ECU inhibits the learning of the reference value of the control amount when the difference between atmospheric pressure and absolute pressure within the intake pipe is smaller than a predetermined value.
Application Number:
JP10600489U
Publication Date:
June 14, 1991
Filing Date:
September 08, 1989
Export Citation:
International Classes:
F02D41/16; F02D31/00; F02D41/24; (IPC1-7): F02D41/16
Domestic Patent References:
| JPS63243431A | 1988-10-11 | |||
| JPS63215852A | 1988-09-08 | |||
| JPS6429650A | 1989-01-31 |
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