| 摘要 |
PROBLEM TO BE SOLVED: To prevent a controllability from being deteriorated by eliminating a displacement between the mechanical opening of a throttle valve and the indicated value of opening caused by the temperature characteristics of a throttle sensor. SOLUTION: A difference between an intake air amount GA and an ISC flow ISCGA at idle is calculated as an air amount displacement amount DGA2 (S203), it is determined whether a difference between the learned value of air amount displacement amount DGA and an air amount displacement amount DGA2 comes within a set range (S204, S205) and, according to the results of the determination, a corrected opening value QADJ is increased, decreased, or held (S206, S207, S208). An ISC opening and the corrected opening value QADJ are added to a target throttle opening to form a final target throttle opening. Thus the displacement between the mechanical opening of the throttle valve and the indicated value of the opening due to the temperature characteristics of the throttle sensor is eliminated, and even when temperature conditions are changed, the converging capability of an actual speed to a target speed is increased, and a rotating stability is assured. COPYRIGHT: (C)2003,JPO
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