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.:
Date of Patent:
Sep. 22, 2015
Filed:
Apr. 27, 2012
Kensuke Wada, Anjo, JP;
Yuhei Yoshioka, Anjo, JP;
Tetsuya Yamaguchi, Anjo, JP;
Daiki Suyama, Okazaki, JP;
Yuji Inoue, Nissin, JP;
Yukihiko Ideshio, Nissin, JP;
Toshihiko Kamiya, Toyota, JP;
Kensuke Wada, Anjo, JP;
Yuhei Yoshioka, Anjo, JP;
Tetsuya Yamaguchi, Anjo, JP;
Daiki Suyama, Okazaki, JP;
Yuji Inoue, Nissin, JP;
Yukihiko Ideshio, Nissin, JP;
Toshihiko Kamiya, Toyota, JP;
AISIN AW CO., LTD., Anjo, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;
Abstract
A hydraulic control device configured with a source pressure generation section, a hydraulic servo for a clutch provided between an engine and a motor, a control solenoid valve that outputs a regulated source pressure to the hydraulic servo, and a switching section that switches a hydraulic passage, which extends between the source pressure generation section and the hydraulic servo to supply the engagement pressure, between a first and second state in which the hydraulic passage has a high conduit resistance compared to the first state at least until the clutch is engaged. The switching section switches the hydraulic passage into the second state during a failure in which the control solenoid valve is de-energized and the source pressure is directly supplied to the hydraulic servo as the engagement pressure, and switches the hydraulic passage into the first state during normal times when the failure does not occur.