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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 8845484 B1

PDFFull Text
Date of Patent:
Sep. 30, 2014

Filed:

Feb. 01, 2012

Vehicle drive device

Applicants:

Toshihiko Kamiya, Toyota, JP;

Terufumi Miyazaki, Toyota, JP;

Mikio Iwase, Anjo, JP;

Tetsuya Yamaguchi, Anjo, JP;

Yuhei Yoshioka, Anjo, JP;

Keisuke Kawamoto, Sakai, JP;

Inventors:

Toshihiko Kamiya, Toyota, JP;

Terufumi Miyazaki, Toyota, JP;

Mikio Iwase, Anjo, JP;

Tetsuya Yamaguchi, Anjo, JP;

Yuhei Yoshioka, Anjo, JP;

Keisuke Kawamoto, Sakai, JP;

Assignees:

Aisin Aw Co., Ltd., Anjo, JP;

Toyota Jidosha Kabushiki Kaisha, Toyota, JP;

Attorney:

Oliff PLC

Primary Examiner:

Jacob S Scott

Int. Cl.
CPC ...
F16D 48/02 (2006.01); B60W 10/02 (2006.01); F16H 45/02 (2006.01); F16D 33/18 (2006.01); B60K 6/48 (2007.10); B60K 6/547 (2007.10); B60W 20/00 (2006.01); F16D 25/0638 (2006.01); B60L 11/14 (2006.01); F16D 25/10 (2006.01); F16H 61/14 (2006.01); B60K 6/38 (2007.10); B60K 6/40 (2007.10); F16H 45/00 (2006.01);
U.S. Cl.
CPC ...
B60W 20/40 (2013.01); B60K 6/48 (2013.01); B60L 2240/423 (2013.01); F16H 2045/0226 (2013.01); B60K 6/547 (2013.01); Y02T 10/6221 (2013.01); B60L 2240/486 (2013.01); F16D 25/0638 (2013.01); F16H 2045/002 (2013.01); B60L 11/14 (2013.01); F16D 25/10 (2013.01); B60L 2240/36 (2013.01); B60L 2240/445 (2013.01); B60L 2270/145 (2013.01); F16H 61/143 (2013.01); Y02T 10/6252 (2013.01); F16D 48/0206 (2013.01); Y02T 10/7077 (2013.01); B60W 10/023 (2013.01); B60K 6/38 (2013.01); Y02T 10/642 (2013.01); F16D 48/02 (2013.01); B60L 2240/443 (2013.01); Y10S 903/902 (2013.01); F16H 45/02 (2013.01); F16H 2045/0284 (2013.01); F16H 45/00 (2013.01); B60K 2006/4825 (2013.01); F16H 2045/021 (2013.01); B60K 6/40 (2013.01);
Abstract

Mutual interference between a hydraulic pressure of a first engagement device and a hydraulic pressure of a second engagement device is suppressed even in the case where operation of the first engagement device and operation of the second engagement device coincide with each other. A vehicle drive device includes a first engagement device that selectively couples a rotary electric machine to an internal combustion engine, and a fluid coupling. The first engagement device includes a first oil chamber that is formed to apply a back pressure to a first piston. The fluid coupling includes a second oil chamber configured to control an engagement state of a second engagement device. The vehicle drive device includes a first control valve that controls a first oil chamber hydraulic pressure, and a second control valve that controls a second oil chamber hydraulic pressure independently of the first oil chamber hydraulic pressure.

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