Hybrid vehicle drive system having means for using at least engi

Details Hybrid vehicle drive system having means for using at least engi Hybrid vehicle drive system having means for using at least engi

1997-04-08

1999-02-23

Camby, Richard M.

Motor vehicles

Power

Electric

477 2, B60K 100

Patent

active

058734260

ABSTRACT:
Hybrid drive system for a motor vehicle, wherein an automatic transmission disposed between a drive wheel of the vehicle and a drive power source including an engine and an electric motor is controlled by a shift control device, to change the speed ratio according to a normal shift pattern in a normal vehicle operating state, and according to a special shift pattern in a predetermined special vehicle operating state such that the speed ratio according to the special shift pattern is smaller than the speed ratio according to the normal shift pattern, and wherein at least the engine is selected by a substitute drive power source selecting device, as the drive power source for driving the vehicle in the special operating state in which the automatic transmission is controlled according to the special shift pattern.

REFERENCES:
patent: 5509491 (1996-04-01), Hall, III
patent: 5704440 (1998-01-01), Urban et al.
patent: 5713425 (1998-02-01), Buschhaus et al.
patent: 5775449 (1998-07-01), Moroto et al.

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