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:
Oct. 25, 2011
Filed:
Dec. 16, 2008
Kousuke Tsunashima, Saitama, JP;
Hiroyuki Kojima, Saitama, JP;
Yoshihisa Kanno, Saitama, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
A twin clutch type speed-change apparatus for detecting the engagement state of a dog clutch by use of the rotational speed difference between an inner main shaft and an outer main shaft and of a signal outputted from a gear position sensor. A rotational speed difference between an inner main shaft and an outer main shaft is detected by use of inner and outer rotational speed sensors. When the engagement of the dog clutch is to be released, it is judged to complete the release if the signal outputted from the gear position sensor indicates a speed step number after shifting and the rotational speed difference is zero. It is judged as a dog-tip caught state if the signal outputted from the gear position sensor indicates a speed step number before or after shifting and the rotational speed difference is a transmission gear ratio difference.