System for detecting frictional state of running road surface
US5758305A · kind A · utility
5Cited by
9References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 20, 1995 |
| Grant date | May 26, 1998 |
| Priority date | — |
| Expiry date | Oct 20, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T8/172
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
In order to correctly detect the frictional state of a running road surface, the running road surface is determined as a low-friction road surface, when tire lock is detected by tire lock detection device, and besides a state in which vehicle deceleration obtained by vehicle deceleration detection means is greater than a predetermined value, is shorter than a predetermined time in a period extending from the start of braking until the tire lock.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.