This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Performance Improvements in a Brake Wear Sensor Used in Off-Highway Vehicle Brake Safety Systems
Technical Paper
2015-01-2728
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
OEM benefit: Vehicle manufacturers desire continuous feedback in monitoring key safety related sub-assemblies. In this application, engineers are calculating the remaining brake pad life by continuously monitoring the current thickness of the brake pad friction material. This information is used in scheduling preventative maintenance activities and avoiding safety incidents. Unplanned machine down time and field repair expenses in earthmoving equipment are cost prohibitive. Today, this technology allows OEM's to have high confidence, continuous feedback on this critical vehicle safety feature, avoiding expensive, unplanned repairs and to improve field “up time” performance.
Application challenge: to develop a reliable linear position sensor that is suitable for continuous monitoring of brake pad material thickness in a high pressure, high temperature, high vibration and contaminated environment typical of large construction (earthmoving) vehicles.
This paper discusses the working principles of an appropriate inductive position sensing technology that has been released into volume production. Details will be provided that demonstrate a production proven device that can sense linear displacement through the wall of a pressure sealed stainless steel membrane, keeping the sensing electronics protected from the typical environmental contaminants that earthmoving machinery are frequently exposed to in normal usage.
Recommended Content
Ground Vehicle Standard | V-Ribbed Belts and Pulleys |
Ground Vehicle Standard | Brake Lining Quality Test Procedure |
Technical Paper | Machine Health Monitoring |
Authors
Topic
Citation
Cain, P., "Performance Improvements in a Brake Wear Sensor Used in Off-Highway Vehicle Brake Safety Systems," SAE Technical Paper 2015-01-2728, 2015, https://doi.org/10.4271/2015-01-2728.Also In
References
- Blythe , W. An Investigation of Container Chassis Brake Lining Maximum Wear Rates SAE Int. J. Passeng. Cars - Mech. Syst. 2 1 285 290 2009 10.4271/2009-01-0091
- Wrede , J. and Decker , H. Brake by Wire for Commercial Vehicles SAE Technical Paper 922489 1992 10.4271/922489
- Liu , Z. , Zheng , H. , Xu , W. , and Yu , Z. A Downhill Brake Strategy Focusing on Temperature and Wear Loss Control of Brake Systems SAE Technical Paper 2013-01-2372 2013 10.4271/2013-01-2372
- Hobein , D. , Dorißen , T. , and Dürkopp , K. Progress in Automotive Position Sensors and Introduction of the Hella Inductive Position Sensor SAE Technical Paper 2004-01-1115 2004 10.4271/2004-01-1115
- Snyder , D. Application of Electronic Displays for Monitoring and Diagnostics on Earthmoving Equipment SAE Technical Paper 850772 1985 10.4271/850772
- Kunkel , S. , Zimmer , T. , and Wachtmeister , G. Friction Analysis of Oil Control Rings during Running-In SAE Int. J. Engines 5 3 747 758 2012 10.4271/2011-01-2428
- Fuglewicz , D. Digital Brake Stroke Sensor SAE Technical Paper 2006-01-3580 2006 10.4271/2006-01-3580
- Commercial Vehicle Safety Technologies: Applications for Brake Performance Monitoring Deborah Freund Federal Motor Carrier Safety Administration and Douglas Skorupski Booz Allen Hamilton Inc. USA Paper Number 09-0097