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Full-Power Parking Emergency Brakes and Fail-Safe on 4-Wheel Disc Brakes
ISSN: 0148-7191, e-ISSN: 2688-3627
Published February 01, 1978 by SAE International in United States
Annotation ability available
The brakes are applied automatically at the time of any system failure. The parking brake is operated by the parking/emergency switch on the dash panel or the ignition switch, without physical effort as found in the conventional hydraulic brake systems. Full-power parking/emergency brakes and fail-safe concepts have been accomplished in the straight-air brake systems. However, duplication of these systems to hydraulic brake systems incurred some difficulties due to the physical properties of fluid, and it is generally concluded that the parking/emergency brakes must be mechanical brakes, and the hydraulic pressure should not be maintained for extended periods of time. The electro-mechanical method employing a detent system is a breakthrough in restraining spring force during normal operation.
CitationYamamoto, M., "Full-Power Parking Emergency Brakes and Fail-Safe on 4-Wheel Disc Brakes," SAE Technical Paper 780353, 1978, https://doi.org/10.4271/780353.
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