Vehicle park brake status monitoring method
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United States of America Patent
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Apr 17, 2012
Grant Date -
Jul 8, 2010
app pub date -
Jul 13, 2006
filing date -
Jul 13, 2006
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A vehicle brake system can include a service brake system and a park brake system wherein, the service brake system includes a service brake chamber is delimited by a service brake displaceable wall upon which a brake pushrod is fixed, the brake pushrod is connected to a vehicle braking arrangement and is capable of moving under a pneumatic pressure from a first position whereby the braking arrangement is released to a second position whereby the braking arrangement is actuated, the park brake system having an actuating arrangement capable of pushing the brake pushrod into its second position. This method is based on measuring the volume of the service brake chamber as the volume of the service brake chamber is a parameter which is representative of the actual position of the brake push rod and thus is representative of the actual park brake status.
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