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:
Feb. 08, 2005
Filed:
Sep. 04, 2003
Toshimi Ishikawa, Anjo, JP;
Zensaku Murakami, Susono, JP;
Noritaka Yamada, Mishima, JP;
Advics Co., Ltd., Kariya, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
A traction control apparatus for a vehicle sets an allowable slip ratio to a constant value that is rather great, when the shift position of a sub-transmission is in 'H', or the shift position of the sub-transmission is in 'L' and the difference between the maximum value and the minimum value among wheel speeds of each driving wheel is less than a wheel speed difference threshold value. On the other hand, when the shift position of the sub-transmission is in “L” and the difference is not less than the wheel speed difference threshold value, the traction control apparatus for the vehicle of the present invention sets the allowable slip ratio to a constant value that is smaller than the above-mentioned constant value. In case where the slip ratio of each driving wheel exceeds the allowable slip ratio set as described above, predetermined braking force is exerted on each driving wheel so as to place the slip ratio of each driving wheel within the allowable slip ratio.