Vehicle traction control system
US5014202A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 11, 1989 |
| Grant date | May 7, 1991 |
| Priority date | — |
| Expiry date | May 11, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T2230/04
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The application of brake pressure to limit the spin of a driven wheel in a traction control system is made adaptive to the torque demand on the engine. This is accomplished by increasing the brake pressure when an excessive spin condition is sensed at a rate that is proportional to a parameter related to engine torque. The ramp is then terminated when the wheel parameters attain certain predetermined conditions. The brake pressure ramp is terminated when the wheel jerk is negative while at the same time the wheel deceleration is below a predetermined value. After the ramp is terminated, the brake pressure of the spinning wheel is controlled based on wheel parameters such as wheel spin ratio or the difference between the speed of the spinning wheel and vehicle speed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.