Fluid-pressure and analogous brake systems – Speed-controlled – Having a valve system responsive to a wheel lock signal
Patent
1997-09-09
1999-10-26
Oberleitner, Robert J.
Fluid-pressure and analogous brake systems
Speed-controlled
Having a valve system responsive to a wheel lock signal
B60T 836
Patent
active
059715014
ABSTRACT:
A pressure control valve unit for a hydraulic brake device is provided which is highly effective in reducing noise, vibration, and harshness.
The pressure control valve unit comprises a normally-open inlet valve and a switching valve sequentially located in the main brake line in a housing cavity between the master cylinder and the wheel cylinder(s). During brake pressure control, the difference in pressure acting on the master cylinder side and that on the wheel cylinder side causes the switching valve to switch to a constricted channel, thereby noticeably reducing the amount of noise, vibration, and harshness.
REFERENCES:
patent: 5647644 (1997-07-01), Volz et al.
patent: 5664849 (1997-09-01), Burgdorf et al.
patent: 5673980 (1997-10-01), Schwarz et al.
patent: 5683150 (1997-11-01), Burgdorf et al.
patent: 5704587 (1998-01-01), Kuromitsu et al.
patent: 5735582 (1998-04-01), Eith et al.
patent: 5803556 (1998-09-01), Weis et al.
Field Bret E.
Nisshinbo Industries Inc.
Oberleitner Robert J.
Siconolfi Robert A.
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