Brake System for Motor Vehicles
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United States of America Patent
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Issued Date -
Jul 14, 2016
app pub date -
Aug 8, 2014
filing date -
Aug 20, 2013
priority date (Note) -
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Abstract
A brake system for motor vehicles controlled in a brake-by-wire operating mode by the vehicle driver and independently. A normally open simulator valve is used, and no isolating valves are required for decoupling the master brake cylinder pressure chambers from the wheel brakes. The simulation device is not connected to one of the pressure chambers of the master brake cylinder and is isolated hydraulically from the pressure chambers of the master brake cylinder, but is coupled directly to the movement of the first master brake cylinder piston. The first master brake cylinder piston is formed as a stepped piston with a circular face and an annular face, the circular face delimits the first pressure chamber and the annular face delimits the hydraulic chamber, wherein a pressure effect in the chamber corresponds to a force which acts on the first master brake cylinder piston against the actuation direction.
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