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.

Date of Patent:
Aug. 31, 1993

Filed:

Feb. 20, 1992
Applicant:
Inventors:

Naoki Inoue, Chiba, JP;

Toshimitsu Takaishi, Saitama, JP;

Takayuki Konuma, Saitama, JP;

Shinichi Maeda, Saitama, JP;

Katsutoshi Yamazaki, Saitama, JP;

Seiji Onozawa, Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60K / ;
U.S. Cl.
CPC ...
36442602 ; 36442603 ; 180197 ; 123333 ;
Abstract

The current ignition delay angle is increased gradually until the delay angle reaches a maximum delay angle stored in a maximum delay angle storage unit when the failure of a traction control unit is detected by a failure detecting member while a switching member is set so as to select the output of a traction control mode ignition angle calculating device. A failure control mode ignition angle calculating device calculates an ignition angle on the basis of the increased delay angle and a standard ignition angle. In case failure occurs in the traction control system during traction control operation, ignition delay angle is increased gradually to reduce the running speed of the vehicle gradually regardless of the opening of the throttle valve. Accordingly, the vehicle is not subjected to shocks attributable to the change of control mode when failure occurs in the traction control system.


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