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:
Apr. 13, 2010
Filed:
Aug. 08, 2007
Katsunori Satou, Kanagawa, JP;
Kenichiro Murakami, Kanagawa, JP;
Hiroyuki Takenaka, Kanagawa, JP;
Yuzuru Tohta, Yokohama, JP;
Kan Yagi, Shizuoka, JP;
Jun Yoshino, Shizuoka, JP;
Katsunori Satou, Kanagawa, JP;
Kenichiro Murakami, Kanagawa, JP;
Hiroyuki Takenaka, Kanagawa, JP;
Yuzuru Tohta, Yokohama, JP;
Kan Yagi, Shizuoka, JP;
Jun Yoshino, Shizuoka, JP;
Nissan Motor Co., Ltd., Yokohama-shi, JP;
Jatco Ltd, Fuji-shi, JP;
Abstract
A shift shock reducing apparatus for a power train having an engine and an automatic transmission having a frictional element that is to be engaged at upshift, comprising a control section that executes, during upshift, a torque down of the engine that starts before the start of an inertia phase in which a gear ratio of the transmission is changing from a before-shift gear ratio to an after-shift gear ratio, and a control section that makes larger a rising gradient of working oil pressure that is supplied to the frictional element to be engaged at upshift when the torque down that starts before the start of the inertia phase is executed than that when the torque down is not executed.