| 摘要 |
PURPOSE:To restrict the change of torque by controlling an ignition timing before switching upon switching the number of operating cylinders. CONSTITUTION:When an operating condition, in which the number of operating cylinders should be switched, is detected, a switching signal (d) is outputted to an actuator 5 and, simultaneously, an ignition timing signal (c), in which the ignition timing is corrected comparing to the spark angle in the condition before switching, is outputted to an ignition coil 4. According to this method, the maximum pressure in the cylinder is reduced and a generating torque per one cylinder may be reduced, therefore, the stepwise sudden increase of the torque of whole of the engine may be restricted and a shock to the body of vehicle may be mitigated. |
