04335429 is referenced by 222 patents and cites 7 patents.

A hybrid vehicle comprises an internal combustion engine, a relatively large motor/generator and a relatively small motor/generator, which are controlled by a microcomputer based on the required torque of the vehicle as a function of time. When the engine is permitted to run, it is always operated in that region which minimizes fuel consumption. If the torque of the engine is too low to drive the vehicle, the relatively large motor is energized to make up for the deficiency. When the engine produces excess torque, the relatively large motor/generator absorbs the excess and is operated as a generator to generate electricity. Braking torque is usually obtained by operating the relatively large motor/generator as a generator. When braking torque is insufficient, the relatively small motor/generator is also operated as a generator to make up for the deficiency.

Title
Control apparatus for engine/electric hybrid vehicle
Application Number
6/129718
Publication Number
4335429
Application Date
March 12, 1980
Publication Date
June 15, 1982
Inventor
Shiro Kawakatsu
Suita
JP
Agent
Darby & Darby
Assignee
Daihatsu Motor
JP
IPC
B60K 1/00
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