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:
Dec. 29, 1987
Filed:
Nov. 18, 1986
Katsumi Ishii, Sagamihara, JP;
Kanae Hirayama, Yamato, JP;
Yoshio Matsuoka, Tokyo, JP;
Kotei Takahashi, Sagamihara, JP;
Nissan Motor Co., Ltd., , JP;
Abstract
A vehicle is equipped with a four wheel drive system having a transfer, a four wheel steer system for steering front wheels and rear wheels, a sensor for sensing a condition of a driving torque distribution between the front wheels and rear wheels, by sensing a condition of the four wheel drive system, and a controller for controlling a rear wheel steer angle in accordance with the condition of the driving torque distribution by commanding the four wheel steer system in such a manner as to maintain the desirable weak understeer characteristic irrespective of change in the driving torque distribution at least when a vehicle speed is greater than a predetermined value.