Invention Application
- Patent Title: Brake Pad Prognosis System
- Patent Title (中): 刹车片预测系统
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Application No.: US12036675Application Date: 2008-02-25
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Publication No.: US20080236269A1Publication Date: 2008-10-02
- Inventor: Mark N. Howell , John P. Whaite , Phanu Amatyakul , Yuen-Kwok Chin , Mutasim A. Salman , Chih-Hung Yen , Mark T. Riefe
- Applicant: Mark N. Howell , John P. Whaite , Phanu Amatyakul , Yuen-Kwok Chin , Mutasim A. Salman , Chih-Hung Yen , Mark T. Riefe
- Applicant Address: US MI DETROIT
- Assignee: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
- Current Assignee: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
- Current Assignee Address: US MI DETROIT
- Main IPC: G01L5/28
- IPC: G01L5/28

Abstract:
A method for providing an estimate of brake pad thickness. The method employs fusion of sensors, if used, and driver brake modeling to predict the vehicle brake pad life. An algorithm is employed that uses various inputs, such as brake pad friction material properties, brake pad cooling rate, brake temperature, vehicle mass, road grade, weight distribution, brake pressure, brake energy, braking power, etc. to provide the estimation. The method calculates brake work using total work minus losses, such as aerodynamic drag resistance, engine braking and/or braking power as braking torque times velocity divided by rolling resistance to determine the brake rotor and lining temperature. The method then uses the brake temperature to determine the brake pad wear, where the wear is accumulated for each braking event. A brake pad sensor can be included to provide one or more indications of brake pad thickness from which the estimation can be revised.
Public/Granted literature
- US07694555B2 Brake pad prognosis system Public/Granted day:2010-04-13
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