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:
Nov. 18, 2014
Filed:
Jan. 26, 2012
Shinya Iizuka, Shizuoka, JP;
Shinya Iizuka, Shizuoka, JP;
Yamaha Hatsudoki Kabushiki Kaisha, Shizuoka, JP;
Abstract
In a vehicle including two paths as torque transmission paths from an engine to an output shaft of a transmission, each of the paths provided with a clutch and a transmission mechanism, a gear shift shock due to a torque generated at the moment when the paired gears of the next gear level are engaged is significantly reduced. In normal travel control, a control device sets a transmitted torque capacity of each of the clutches in the two paths at maximum. Also, in the normal travel control, the control device sets the paired gears of the transmission mechanism in a previous path that is one of the paths, in an engaged state, and sets the transmission mechanism in a next path that is the other path, in a neutral state. When a gear shift command is generated, the control device lowers the transmitted torque capacity of the clutch in the next path. After that, the control device engages the paired gears of the transmission mechanism in the next path with each other, before the transmitted torque capacity of the clutch in the next path reaches a minimum value.