초록 ▼

In a vehicle equipped with a motor generator and a starter, if an ignition key has been switched from OFF to ON, preferably an engine is started by using the starter. However, if the temperature T of the engine is high (B≤T), the engine is started by the motor generator. When the engine is restarted

In a vehicle equipped with a motor generator and a starter, if an ignition key has been switched from OFF to ON, preferably an engine is started by using the starter. However, if the temperature T of the engine is high (B≤T), the engine is started by the motor generator. When the engine is restarted after automatic stop thereof, preferably the engine is started by using the motor generator. However, if the temperature T of the engine is low (T≤A), the engine is started by using the starter. The engine is started by suitably selecting between the starter and the motor generator, whereby it becomes possible to improve responsive characteristics and startability and abate oscillatory noise.

대표청구항 ▼

1. A vehicular engine starting control apparatus for a vehicle having an engine which outputs power to a drive shaft of the vehicle, a motor-generator which inputs power to and outputs power from a power transmission path that extends from an output shaft of the engine to the drive shaft, and a star

1. A vehicular engine starting control apparatus for a vehicle having an engine which outputs power to a drive shaft of the vehicle, a motor-generator which inputs power to and outputs power from a power transmission path that extends from an output shaft of the engine to the drive shaft, and a starter which is coupled to the output shaft of the engine, the control apparatus comprising: a controller which: (1) receives an initial engine starting command if an ignition key has been switched from OFF to ON; (2) receives an engine restarting command upon fulfillment of a predetermined restarting condition during automatic stoppage of the engine; (3) issues a command to start the engine by using the starter upon issuance of the initial engine starting command; and (4) issues a command to start the engine by using the motor-generator upon issuance of the engine restarting command. 2. A vehicular engine starting control method for a vehicle having an engine which outputs power to a drive shaft of the vehicle, a motor-generator which inputs power to and outputs power from a power transmission path that extends from an output shaft of the engine to the drive shaft, and a starter which is coupled to the output shaft of the engine, the method comprising: determining whether or not an ignition key has been switched from OFF to ON; determining whether or not a predetermined restarting condition has been fulfilled during an automatic stoppage of the engine; and starting the engine by using the starter if the ignition key has been switched from OFF to ON, and by using the motor-generator if the predetermined restarting condition has been fulfilled during the automatic stoppage of the engine.