초록 ▼

A parallel hybrid electric vehicle includes an engine and a motor/generator as a rotary driving source. A differential device has a first shaft connected to the engine, a second shaft connected to the motor/generator, and a third shaft connected to a transmission device. The first and the second sha

A parallel hybrid electric vehicle includes an engine and a motor/generator as a rotary driving source. A differential device has a first shaft connected to the engine, a second shaft connected to the motor/generator, and a third shaft connected to a transmission device. The first and the second shafts can be coupled by a direct clutch. At the time of start of the vehicle with the engine in an idling condition, the motor/generator is controlled to enter a reverse rotation power generating condition, and the engine speed is maintained near an idling speed. After the start of the vehicle, when the motor/generator is in a forward rotation condition, the motor/generator is controlled to operate as a motor to maintain the engine speed at a target speed, and when the engine speed and the motor/generator speed coincide with each other, the direct clutch is made to enter a coupled condition thereby to prevent the occurrence of coupling shock, and also to reduce a driving time of the motor/generator.

대표청구항 ▼

[ I claim:] [5.] A control apparatus of a parallel hybrid electric vehicle comprising:an engine;an electric rotary driving source having both functions of a generator and a motor;a transmission device;a differential device having a first shaft connected to the engine, a second shaft connected to an

[ I claim:] [5.] A control apparatus of a parallel hybrid electric vehicle comprising:an engine;an electric rotary driving source having both functions of a generator and a motor;a transmission device;a differential device having a first shaft connected to the engine, a second shaft connected to an output shaft of the electrical rotary driving source, and a third shaft connected to the transmission device; anda coupling device for connecting and disconnecting between two shafts selected from the first to the third shafts;an engine speed detection means for detecting an engine speed;an electric rotary driving source speed detection means for detecting a rotational speed of the electric rotary driving source;an electric rotary driving source control means for controlling a torque of the electric rotary driving source; anda coupling control means for controlling a change-over of the coupling device between the non-coupled condition and the coupled condition,wherein said electric rotary driving source control means sets an idling speed detected by the engine speed detection means at the time of starting of the vehicle to a target speed, and controls the torque of the electric rotary driving source so that the target speed is maintained, andsaid coupling control means controls the coupling device to enter the non-coupled condition when an engine speed detection value of the engine speed detection means exceeds a rotary driving source speed detection value of the electric rotary driving source speed detection means, and controls to enter the coupled condition when the engine speed detection value is equal to or lower than the rotary driving source speed detection value.