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. 16, 1994
Filed:
Sep. 04, 1992
Hiroshi Mouri, Yokosuka, JP;
Masayuki Watanabe, Yokosuka, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Abstract
A rear wheel steering control system for automotive vehicles steers rear wheels of the vehicle with a same-phase angle as the front wheels for a relatively small steering wheel operation angle, and with an opposite-phase angle to the front wheels for a relatively large steering wheel operation angle. The control system serves to mitigate an enhanced understeering tendency of front wheel drive type vehicles during cornering. A delay means is operative in a particular steering wheel operation angle range in which the rear wheels steering angle changes between a maximum same-phase steering angle and a maximum opposite-phase steering angle. The delay means sets a delayed rear wheel steering response characteristic with reference to a manual steering wheel operation, for maintaining a stable maneuverability during a lane change. When the lane change is accompanied by steer-back of the rear wheels with a same-phase angle as the front wheels, an actual cornering state of the vehicle may be detected to generate a delayed cornering state signal which is used to limit the steer-back amount.