Fluid-pressure and analogous brake systems – Multiple systems – Fluid pressure and electric
Patent
1995-03-14
1996-09-03
Butler, Douglas C.
Fluid-pressure and analogous brake systems
Multiple systems
Fluid pressure and electric
188156, 303 20, 303DIG3, 3031134, B60T 1120, B60T 1128, B60T 1366, B60T 1374
Patent
active
055517641
ABSTRACT:
A brake system for automotive vehicles with electric drive is operable by an actuating pedal and uses hydraulic friction brakes to augment the braking effect generated by the electric drive motors. The coaction of the drive motors with the hydraulic friction brakes is controlled by an electronic controller. In order to largely conform the pedal characteristics of the mentioned brake system to that of a standard passenger car, an actuating pedal (5) is in force-transmitting and travel-transmitting connection with a spring (8) exhibiting a predetermined characteristic curve, and the master brake cylinder (11), uncoupled from the actuating pedal (5), is operable by an electromagnet (9) which is responsive to the controller (70). If the master brake cylinder accommodates two pressure cheers, a single valve is arranged in or on the master cylinder housing, and acts as both a bypass valve and a differential-pressure valve.
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Balz Juergen
Bill Karlheinz
Halasy-Wimmer Georg
Kircher Dieter
Kunze Lothar
Butler Douglas C.
ITT Automotive Europe GmbH
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