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:
May. 14, 2013
Filed:
Dec. 22, 2010
Tomoaki Ishikawa, Wako, JP;
Koichiro Inukai, Wako, JP;
Akira Yoshida, Wako, JP;
Atsushi Abe, Wako, JP;
Tamaki Sakurai, Wako, JP;
Tomoaki Ishikawa, Wako, JP;
Koichiro Inukai, Wako, JP;
Akira Yoshida, Wako, JP;
Atsushi Abe, Wako, JP;
Tamaki Sakurai, Wako, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
A failure detecting apparatus for a hydraulic circuit of a gearbox includes an operating-state detector. The operating-state detector is configured to detect an operating state of a subject to be controlled with a control-signal pressure output from a solenoid valve. A current setting device is configured to set an electrical current supplied to a solenoid so as to close an output oil passage when a modulator valve is normal and to open the output oil passage when an open failure occurs in the modulator valve, while the solenoid valve is conductive. A failure determining device is configured to detect a failure of the modulator valve when the operating state of the subject to be detected by the operating-state detector is abnormal after a value of the electrical current to be supplied to the solenoid is set at the current setting device.