Automobile and controlling method for automobile

Internal-combustion engines – Engine speed regulator – Having condition responsive means with engine being part of...

Reexamination Certificate

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C123S361000, C180S065230

Reexamination Certificate

active

06837215

ABSTRACT:
A hybrid automobile runs by transmitting a power from an engine and a power from a motor-generator MG2, and can store a part of the power from the engine and an electric power generated by a motor-generator MG1. In this hybrid automobile, a power requirement Pr* of a drive shaft is set based on an accelerator opening, and a battery charge electric power Pbi is set based on SOC, and the sum of the power requirement Pr* and the battery charge electric power Pbi are set as an engine target power Pe*. When the engine target power Pe* is less than a predetermined minimum value Plow, the engine target power Pe* is changed to the minimum value Plow. Further, in accordance with this change, the battery charge electric power Pbi is also changed, and the engine and the motor-generators MG1, MG2are operated. Since the minimum value Plow is set to be a value such that the efficiency with respect to the output of the engine becomes optimal, it is possible to prevent the engine from being operated in a low output region where the efficiency is low.

REFERENCES:
patent: 6208034 (2001-03-01), Yamaguchi
patent: 6242873 (2001-06-01), Drozdz et al.
patent: 6269290 (2001-07-01), Egami et al.
patent: 6563230 (2003-05-01), Nada
patent: 6784563 (2004-08-01), Nada
patent: 2001-16705 (2001-01-01), None
patent: 2001-20771 (2001-01-01), None
patent: 2001-298805 (2001-10-01), None

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