Patent Number: 8,715,135

Title: Control device for hybrid vehicle automatic transmission

Abstract: A control device for a hybrid vehicle automatic transmission. A friction engagement element control unit includes a first play elimination control unit that sets a first pressure as the pressure for a first set time where the predetermined friction engagement element is engaged using a hydraulic pressure from the electric oil pump in a travel state in which only the rotary electric machine serves as a drive source. The first play elimination pressure is lower than a play elimination pressure for use in the case where the predetermined friction engagement element is engaged using a hydraulic pressure from the mechanical oil pump in a travel state in which the internal combustion engine serves as a drive source.

Inventors: Ueda; Yosuke (Ichimiya, JP), Asai; Masahiro (Anjo, JP), Motodohi; Kazuhiko (Anjo, JP), Tajima; Yoichi (Anjo, JP)

Assignee: Aisin Aw Co., Ltd.

International Classification: B60K 1/02 (20060101); F16H 61/26 (20060101)

Expiration Date: 5/06/12018