Patent ID: 9581122
Date: 2017-02-28
CPC Classifications: B60K,B60L,B60W,F02N,Y02T

Claim:
1. A stop control apparatus applied to an internal combustion engine, a crankshaft of the internal combustion engine being connected to a rotational member via a torsional damper, wherein when a direction in which the crankshaft rotates while the internal combustion engine is in operation is assumed to be a positively rotating direction, a state of torque applied to the crankshaft in the positively rotating direction in which the crankshaft rotates is assumed to be positive, and a state of a torsional angle of the torsional damper in a state of the crankshaft advancing in the positively rotating direction with respect to the rotational member is assumed to be positive, a last positive peak of torque of the internal combustion engine occurs when the internal combustion engine is going to be stopped occurs in a situation where a rotational frequency of the internal combustion engine is lower than resonant frequency of the torsional damper, and the stop control apparatus comprises: an electric motor which is capable of outputting torque to the crankshaft; and a computer executing a computer program to function as a stop device which is configured to execute a stop control to make the electric motor output the torque such that the crankshaft decelerates, in a case where a predetermined engine stop condition is satisfied, wherein the stop device is configured by the computer executing the computer program to stop the crankshaft and thereby set a positive peak of the torsional angle of the torsional damper to occur at a moment of a peak of torque of the internal combustion engine in each expansion stroke of the internal combustion engine.