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:
Aug. 17, 2010
Filed:
Jan. 24, 2007
Yoshiyuki Yoshida, Hitachi, JP;
Tetsuo Matsumura, Hitachinaka, JP;
Kentaro Shishido, Hitachinaka, JP;
Yoshiyuki Yoshida, Hitachi, JP;
Tetsuo Matsumura, Hitachinaka, JP;
Kentaro Shishido, Hitachinaka, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A vehicle control device includes an actual drag torque calculating unit, which calculates the drag torque of a power transfer mechanism. A lubricating oil flow rate calculating unit determines the flow rate of lubricating oil according to the actual torque, and a reference drag torque calculating unit calculates a reference drag torque. In addition, a reference lubricating oil flow rate calculating unit calculates a reference lubricating oil flow rate according to the reference drag torque. A correction rate calculating unit then calculates a correction value corresponding to the rate of correction of the lubricating oil flow rate according to the lubricating oil flow rate and reference lubricating oil flow rate. A flow rate correction unit outputs a drive signal to an actuator which controls a lubrication oil flow rate according to the correction rate.