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. 27, 2019
Filed:
Feb. 09, 2018
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi, JP;
Ryochi Watanabe, Susono, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;
Abstract
A control device for a four-wheel drive vehicle includes a differential restriction device which varies a differential restriction degree between a front wheel rotary shaft and a rear wheel rotary shaft, a differential restriction device and control units for controlling the differential restriction device. The control device is configured to control a behavior when the vehicle is being braked. Further, the control unit is configured to lower the differential restriction degree when a yaw rate of the vehicle is lower than a predetermined yaw rate threshold and a time decreasing rate of an estimated vehicle body speed which is a vehicle body speed estimated based on a wheel speed of the vehicle falls below a predetermined decreasing rate when the vehicle is being braked, in a vicinity of a maximum value.