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:
Jun. 23, 2015
Filed:
Nov. 19, 2008
Hiroyuki Kojima, Saitama, JP;
Kazunari Iguchi, Saitama, JP;
Kazuma Morimitsu, Saitama, JP;
Takashi Ozeki, Saitama, JP;
Yoshiaki Tsukada, Saitama, JP;
Shigeru Tajima, Saitama, JP;
Hiroyuki Kojima, Saitama, JP;
Kazunari Iguchi, Saitama, JP;
Kazuma Morimitsu, Saitama, JP;
Takashi Ozeki, Saitama, JP;
Yoshiaki Tsukada, Saitama, JP;
Shigeru Tajima, Saitama, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
A clutch control system for a transmission for detecting if hydraulic control during shifting is not executed. A first clutch and a second clutch are switched from a disengagement state to an engagement state by receiving a predetermined pressure generated by a hydraulic pump. A transmission executes shifting to an adjacent gear step by operation of switching the engagement state of the first clutch and of the second clutch from one side to the other side. If an elapse time t from the start of clutch switching operation reaches a predetermined time and an input-output speed ratio which is a ratio between engine speed and counter shaft rotational number falls within a predetermined range corresponding to a gear step before shifting, the transmission control unit discontinues the clutch switching operation by stopping the supply of hydraulic pressure to the other side clutch to bring it into the disengagement state.