Slip-controlled brake system, especially for use with automotive vehicles

A slip-controlled brake system for a vehicle having wheels and wheel brakes, said system comprising:

• a pedal-actuated brake pressure generator including a master cylinder;
• means for sensing wheel rotational behavior of said wheels and for generating signals representative of said wheel rotational behavior;
• electronic circuit means, responsive to said signals representative of said wheel rotational behavior, for generating actuating signals;
• hydraulic valves responsive to said actuating signals and operable to modulate brake pressure to effect wheel slip control, said hydraulic valves including:
• (a) inlet valves, in fluid communication with said master cylinder, operable to permit brake pressure fluid flow to said wheel brakes, each said inlet valve having a pressure side through which pressure fluid enters said inlet valve from said master cylinder, and
• (b) outlet valves operable to permit brake pressure fluid flow from said wheel brakes, each said outlet valve having a pressure side through which pressure fluid enters said outlet valve from said wheel brakes;
• an auxiliary pressure pump for delivering pressure fluid to said inlet valves during wheel slip control;
• a hydraulic circuit interconnecting said generator and said hydraulic valves and said auxiliary pressure pump;
• and
• pressure attenuation means, operable to attenuate pressure pulsations within said circuit caused by said hydraulic valves and caused by said auxiliary pressure pump, said pressure attenuation means including:
• (a) a first resilient elastomeric element, displaceable in response to hydraulic pressure fluctuations, and disposed on said pressure side of said inlet valves, and
• (b) a second resilient elastomeric element, displaceable in response to hydraulic pressure fluctuations, and disposed on said pressure side of said outlet valves.