Document Type and Number:
Japanese Patent JPH036338
Kind Code:
B2
Abstract:
A supplementary air quantity to be supplied to the engine (1) through a first auxiliary air passage (8b) bypassing an engine throttle valve (5) is controlled by a first control valve (6) on the basis of a basic value of a control amount corresponding to the difference between actual engine speed and desired idling speed. A supplementary air quantity to be supplied to the engine through a second auxiliary air passage (8c) is controlled by a second control valve (10) in response to engine temperature. A first correction value is calculated based upon detected atmospheric pressure (PA) encompassing the engine, and a second correction value based upon detected engine temperature (TW) and atmospheric pressure (PA). The basic value of the control amount is corrected by means of the first and second correction values, and the first control valve (6) is driven according to the corrected control amount basic value. Preferably, the second correction value is calculated from a value of the control amount corresponding to a supplementary air quantity estimated to be supplied through the second control valve (10) at the detected engine temperature and from the first correction value based upon the detected atmospheric pressure.
Inventors:
YASUOKA AKIMASA
KIUCHI TAKEO
KIUCHI TAKEO
Application Number:
JP4840885A
Publication Date:
January 29, 1991
Filing Date:
March 13, 1985
Export Citation:
Assignee:
HONDA MOTOR CO LTD
International Classes:
F02D41/04; F02D31/00; F02D41/00; F02D41/08; F02D41/16