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. 19, 1998
Filed:
Aug. 10, 1995
Applicant:
Inventors:
Toshiro Ichikawa, Atsugi, JP;
Hideaki Nakamura, Atsugi, JP;
Assignee:
Unisia Jecs Corporation, Atsugi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B62D / ;
U.S. Cl.
CPC ...
701 41 ; 280 919 ; 180410 ;
Abstract
A rear wheel steer control method and apparatus for a four wheel steer vehicle executes an opposite phase steer control on the basis of detected values of a front wheel steer angle sensor and a vehicle speed sensor during a low vehicle speed. The opposite phase steering is stopped for a predetermined distance from a start of straight running, then the rear wheel steer angle is controlled by a primary delay control. When the front wheel steer angle is decreased, the primary delay control is stopped in a predetermined condition. Therefore, the four wheel steer vehicle gives a smooth steer feeling to a driver in every driven condition.