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. 06, 2008
Filed:
Feb. 01, 2006
Hiroyuki Sakamoto, Hitachinaka, JP;
Masahiko Ibamoto, Hitachinaka, JP;
Hiroshi Kuroiwa, Hitachi, JP;
Hiroyuki Sakamoto, Hitachinaka, JP;
Masahiko Ibamoto, Hitachinaka, JP;
Hiroshi Kuroiwa, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
An automotive shift change control system and automatic transmission system is provided to give passengers a comfortable feeling of shift changing or of driving. A transmission connects a vehicle-driving engine, an electrical rotary machine, and axles via a differential gearbox, transmits the power of the engine to the axles via the electrical rotary machine during a shift change, and conducts the shift change. The automotive shift change control unit that controls the change gear ratio of the transmission includes a driving force controller to control the driving force of the electrical rotary machine, a shift-changing speed controller to send a driving force command from the electrical rotary machine to the driving force controller, and a target shift-changing speed changeover device to output the target shift-changing speed that becomes a target value of the shift-changing speed controlled by the shift-changing speed controller.