| 摘要 |
<p>PROBLEM TO BE SOLVED: To inhibit abnormal combustion such as knocking while avoiding a reduction of engine torque when possible.SOLUTION: In a low-revolution and high-load operation region where an engine speed is not higher than a predetermined speed and a load is not lower than a predetermined load, the correction amount of the retard of an intake valve timing is adjusted depending on the amount of deposits accumulated on a cylinder at this time. The retard of the intake valve timing is greater as the estimated amount of the deposits accumulated thereon is larger.</p> |
