초록 ▼

A hybrid drive system for a motor vehicle, including an engine, a motor/motor, an automatic transmission disposed between the engine and a vehicle drive wheel, a regenerative braking device for applying to the vehicle a regenerative braking force corresponding to an amount of electric energy generat

A hybrid drive system for a motor vehicle, including an engine, a motor/motor, an automatic transmission disposed between the engine and a vehicle drive wheel, a regenerative braking device for applying to the vehicle a regenerative braking force corresponding to an amount of electric energy generated by the motor/generator during an operation of the motor/generator by a kinetic energy of the running vehicle, and at least one of (a) a shift inhibiting device for inhibiting a shifting action of the automatic transmission during an operation of the regenerative braking device so as to prevent a change of an engine braking force applied to the vehicle, (b) a braking shift control device which is operated when the regenerative braking device is inoperable to provide the required regenerative braking force, for changing the speed ratio of the automatic transmission to increase the engine braking force, or operated prior to the operation of the regenerative braking device, for controlling the speed ratio of the transmission so as to apply the engine brake to the vehicle, and (c) a mode change inhibiting device for inhibiting a change of operation mode between regenerative braking mode and engine braking mode during regenerative braking or engine braking.

대표청구항 ▼

[ What is claimed is:] [1.] A hybrid drive system for a motor vehicle, comprising:a drive power source including an engine operated by combustion of a fuel, and a motor/generator operated with an electric energy;an automatic transmission which is disposed between at least said engine of said drive p

[ What is claimed is:] [1.] A hybrid drive system for a motor vehicle, comprising:a drive power source including an engine operated by combustion of a fuel, and a motor/generator operated with an electric energy;an automatic transmission which is disposed between at least said engine of said drive power source and a drive wheel of the motor vehicle and which is shifted to change a speed ratio thereof in steps according to predetermined shift patterns;regenerative braking means for applying to the motor vehicle a regenerative braking force corresponding to an amount of electric energy generated by said motor/generator during an operation of said motor/generator by a kinetic energy of the motor vehicle; andshift inhibiting means for inhibiting a shifting action of said automatic transmission during an operation of said regenerative braking means, so as to prevent a change of an engine braking force which is applied to the motor vehicle due to a resistance to rotation of said engine.