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. 23, 1988
Filed:
Dec. 29, 1986
Mutumi Kawamoto, Tokyo, JP;
Shuzo Moroto, Handa, JP;
Takashi Yamada, Tokyo, JP;
Shouji Yokoyama, Tokyo, JP;
Abstract
Disclosed is a control apparatus for a four-wheel drive vehicle having a center differential mechanism which allows a difference in rotating speed between front and rear wheels so as to absorb a difference in turning radius developed between the front and rear wheels when the vehicle is cornering, and a center differential clutch for limiting differential action of the center differential mechanism. The control apparatus has front-wheel torque sensor provided on a front-wheel drive shaft. When a negative torque is sensed on the front-wheel side while the vehicle is traveling with a restraint placed upon the differential action of the center differential mechanism, the restraint is reduced or removed automatically. This prevents occurrence of a tight corner braking phenomenon and permits the function of the center differential mechanism to fully manifest itself. The vehicle is kept in a stable and safe traveling condition in which driving force is fully utilized.