Engine stop control apparatus and engine stop control method

摘要

An engine stopping section first selects, when an engine stop condition is satisfied, a power-generation braking mode in which a power-generation braking torque is applied to the engine by a power generation operation of the generator, to thereby apply the power-generation braking torque to the engine, and then selects a short-circuit braking mode in which a short-circuit braking torque is applied to the engine by short-circuiting each energization phase of an armature coil with a semiconductor switch and by causing a field current to flow through a field coil, to thereby apply the short-circuit braking torque to the engine.

主权项

1. An engine stop control apparatus, which is to be applied to a vehicle including an engine controlling section configured to stop fuel supply to an engine to stop the engine when an engine stop condition is satisfied, and then restart the engine when an engine restart condition is satisfied, the engine stop control apparatus comprising:
a generator of a field coil type, which is connected to the engine, the generator being configured to control a field current flowing through a field coil to control a power generation amount, and switch an energization phase of an armature coil with a semiconductor switch; and an engine stopping section configured to switch between a power-generation braking mode in which a power-generation braking torque is applied to the engine by a power generation operation of the generator, and a short-circuit braking mode in which a short-circuit braking torque is applied to the engine by short-circuiting each energization phase of the armature coil with the semiconductor switch and by causing the field current to flow through the field coil, the engine stopping section being configured to, when the engine stop condition is satisfied, first select the power-generation braking mode to apply the power-generation braking torque to the engine, and then select the short-circuit braking mode to apply the short-circuit braking torque to the engine.