| 摘要 |
PCT No. PCT/JP94/01707 Sec. 371 Date May 18, 1995 Sec. 102(e) Date May 18, 1995 PCT Filed Oct. 12, 1994 PCT Pub. No. WO95/10699 PCT Pub. Date Apr. 20, 1995It is determined whether or not the absolute value of a deviation DELTA I between an electric load current value Ifbon at the start of idle speed feedback and a present electric load current value Iel is greater than a predetermined threshold value Xdiel (S31). If the absolute value of the deviation DELTA I is smaller than the threshold value Xdiel, feedback control of an ISC valve is continued (S23). When the absolute value of the deviation DELTA I becomes greater than the value Xdiel, countdown of a countdown timer (T) is started (S36), and the control mode is switched over to open-loop control to drive the ISC valve (S33) so that the value in the timer becomes 0 (S32), whereby idling is stabilized despite the fluctuation of the engine load.
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