Invention Grant
- Patent Title: Detection of a friction brake fault
-
Application No.: US16013203Application Date: 2018-06-20
-
Publication No.: US11220251B2Publication Date: 2022-01-11
- Inventor: Xinyu Du , Dongyi Zhou , Mutasim A. Salman , Kevin A. Cansiani , Xiaoyu Huang , Wen-Chiao Lin
- Applicant: GM Global Technology Operations LLC
- Applicant Address: US MI Detroit
- Assignee: GM Global Technology Operations LLC
- Current Assignee: GM Global Technology Operations LLC
- Current Assignee Address: US MI Detroit
- Agency: Quinn IP Law
- Main IPC: B60T17/22
- IPC: B60T17/22 ; B60T13/66

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.
Public/Granted literature
- US20190389446A1 DETECTION OF A FRICTION BRAKE FAULT Public/Granted day:2019-12-26
Information query