Automotive traction control system
US5241478A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 20, 1992 |
| Grant date | Aug 31, 1993 |
| Priority date | — |
| Expiry date | Feb 20, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T8/175
- WIPO fieldTransport
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.