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. 01, 2007
Filed:
Jun. 18, 2004
Tetsuo Matsumura, Hitachinaka, JP;
Naoyuki Ozaki, Hitachinaka, JP;
Kinya Fujimoto, Hitachinaka, JP;
Hiroshi Kuroiwa, Hitachl, JP;
Takashi Okada, Hitachl, JP;
Tetsuo Matsumura, Hitachinaka, JP;
Naoyuki Ozaki, Hitachinaka, JP;
Kinya Fujimoto, Hitachinaka, JP;
Hiroshi Kuroiwa, Hitachl, JP;
Takashi Okada, Hitachl, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
Power train control unitcontrols friction clutchwhen shifting from one cogwheel row to the other cogwheel row, sets the target synchronous rotation speed based on the output rotation speed of a transmission and parameters indicative of the state of engineor the transmission, and sets the command value to the friction clutch so that the input rotation speed can be synchronized with the target synchronous rotation speed. Control unitsets the target shifting required time based on parameters indicative of the state of engineor the transmission, and corrects the command value to the friction clutch so that the required shift time can approach the above target shift required time.