Detection of a friction brake fault
US11220251B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 20, 2018 |
| Grant date | Jan 11, 2022 |
| Priority date | — |
| Expiry date | Aug 29, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T8/00
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A method of identifying a fault in a friction brake actuated by hydraulic brake pressure and configured to decelerate a vehicle road wheel includes detecting, via a first sensor, a vibration at the road wheel and communicating data indicative of the detected vibration to a controller. The method additionally includes detecting, via a second sensor, upon application of the hydraulic brake pressure, a hydraulic brake pressure variation and communicating data indicative of the detected hydraulic brake pressure variation. The method additionally includes comparing, via the controller, the data indicative of the detected vibration with a threshold vibration value and the data indicative of the detected hydraulic brake pressure variation with a threshold hydraulic brake pressure value. Furthermore, the method includes generating a sensory signal indicative of the brake fault when magnitudes of the detected vibration and the detected hydraulic brake pressure variation are greater than their respective threshold values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.