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:
Jun. 17, 2003
Filed:
Jun. 19, 2002
Applicant:
Inventors:
Takeshi Katayama, Kanagawa, JP;
Hajime Kosaka, Tochigi, JP;
Assignee:
Nissan Motor Co., Ltd., Yokohama, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 7/00 ;
U.S. Cl.
CPC ...
G06F 7/00 ;
Abstract
In driving force controlling apparatus and method for a four-wheel drive vehicle, a command is outputted to a front-and-rear wheel driving force distribution control system to reduce a clutch engagement force of a clutch such as a frictional clutch when a subtraction value of a detected value of a clutch transmission torque from that of a clutch input torque (Tinp−Tr) is smaller than a predetermined value (&dgr;) and detected wheel velocities of both of left and right road wheels of the vehicle are substantially equal to each other (Vw ±&agr;=Vw and Vw ±&agr;=Vw ).