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. 06, 2007
Filed:
Apr. 25, 2003
Applicants:
Tsuyoshi Murakami, Handa, JP;
Ryohei Shigeta, Hiroshima, JP;
Inventors:
Tsuyoshi Murakami, Handa, JP;
Ryohei Shigeta, Hiroshima, JP;
Assignee:
Jtekt Corporation, Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
B60K 17/34 (2006.01);
U.S. Cl.
CPC ...
Abstract
A driving force distribution control apparatus and driving force distribution control method for a four-wheel drive vehicle which can quickly increase torque distribution to sub-drive wheels after a transmission has been shifted down. According to the apparatus and method, when it is determined that the transmission has been shifted down, an ECU controls a coupling capable of changing the torque distribution to the front wheels and rear wheels such that the torque distribution to the front wheels and rear wheels approaches a uniform state.