APPARATUS AND METHOD FOR EVACUATION OF A BRAKE SYSTEM

Abstract: a method of operating a vehicle brake system having multiple wheel brakes includes providing a plunger assembly having a plunger and a chamber fluidly connected to at least one of the wheel brakes. an evacuation of at least one of the wheel brakes is performed by moving the plunger relative to the chamber under control of an electronic control unit (ecu) to generate a vacuum from the chamber to the at least one wheel brake. pressurized brake fluid is supplied from a reservoir to the evacuated wheel brakes by moving the plunger relative to the chamber under control of the ecu once all the wheel brakes are evacuated.

Inventor(s): Douglas Osborn, Daniel L. Hopper

CPC Classification: B60T17/222 (VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL (electrodynamic brake systems for vehicle, in general ; brakes per se, i.e. devices where braking effect occurs, including ultimate brake actuators, ); ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES)

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