Vehicle drive device controller

Details Vehicle drive device controller Vehicle drive device controller

2011-03-22

2011-03-22

Pang, Roger (Department: 3655)

Interrelated power delivery controls, including engine control

Plural engines

Electric engine

C477S005000, C477S108000, C180S065285

Reexamination Certificate

active

07909728

ABSTRACT:
A vehicle drive apparatus is disclosed having a differential mechanism and an electric motor provided in the differential mechanism for miniaturizing the drive apparatus or improving fuel consumption while suppressing the occurrence of shifting shocks. A switching clutch C0or switching brake B0is provided for placing a shifting mechanism10in a continuously variable shifting state and a step variable shifting state, enabling the drive apparatus to have combined advantages including a fuel economy improving effect of a transmission, enabled to electrically change a speed ratio, and a high transmitting efficiency of a gear type transmitting device enabled to mechanically transmit drive power. During a shifting of an automatic shifting portion20with a differential portion placed in a continuously variable shifting state, engaging pressure control means84controls a engaging pressure of a engaging device of the automatic power shifting portion20such that a rotational speed N18of a transmitting member achieves a given variation so as to provide a compromise between a rapid shifting response on a feeling and a slow shifting response on the shifting shocks, thereby suppressing the occurrence of the shifting shocks.

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