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Operating Characteristics of a Medium Duty Wet Disk Brake
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English
Abstract
The following describes the development of a wet disk brake for medium duty truck use. It was determined that the most important parameter to allow extended periods of energy absorption of a brake is the heat capacitance. This brake utilizes a hydrodynamic film of oil between interleaved stators and rotors to distribute the heat evenly throughout the entire mass thus effectively increasing the thermal mass of the brake. Tests also indicate that there may be as much as a 50% increase in fuel economy. Road wear tests project the present brake to have a life of 50,000 miles. If other friction materials used in bench tests were used, brake life could be as high as 150,000 miles.
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Citation
Renfroe, D., "Operating Characteristics of a Medium Duty Wet Disk Brake," SAE Technical Paper 892452, 1989, https://doi.org/10.4271/892452.Also In
References
- Renfroe, D.A. “Fuel Saving Potential Using a High Energy Capacity Brake,” To be presented as a paper at the International Congress February 1990
- Renfroe, D.A. Iverson, R.A. Richardson, D.E. “Braking Performance of the Hydrodynamic Film Brake,” Fourth Autotechnologies Conference Monte Carlo January 1989
- Renfroe, D.A. “Multivariable Non-Linear Regression for Data Analysis,” To be presented at the SAE International Congress February 1990
- Renfroe, D.A. Iverson, R.A. “Long Term High Energy Clutch/Braking Technique,” SAE 861346