Fluid-pressure and analogous brake systems – Speed-controlled – Having a valve system responsive to a wheel lock signal
Patent
1997-09-11
2000-07-04
Oberleitner, Robert J.
Fluid-pressure and analogous brake systems
Speed-controlled
Having a valve system responsive to a wheel lock signal
303900, 303901, B60T 836
Patent
active
060828323
ABSTRACT:
A slaved dump valve for an anti-lock brake system having two driven rear wheels and traction control includes a check valve and restrictor. In particular the dump valve includes a 2-way/2-position solenoid valve connected to the return conduit of each rear wheel brake cylinder for reducing the pressure at both of the wheel brake cylinders simultaneously. Each return conduit of each rear wheel brake cylinder connected to the slave dump valve contains a check valve oriented to prevent pressurized fluid from flowing from one rear wheel brake cylinder to the other. A restrictor is positioned in each return conduit to allow the pressure at each of the rear wheel brake cylinders to be reduced immediately when the dump valve is opened. Fully independent pressure regulation of the rear wheel brake cylinders connected to the single dump valve can be simulated by controlling inlet valves in conjunction with the single dump valve.
REFERENCES:
patent: 5441336 (1995-08-01), Takeuchi
patent: 5584540 (1996-12-01), Takeuchi et al.
patent: 5673979 (1997-10-01), Kuromitsu et al.
patent: 5746487 (1998-05-01), Naito et al.
patent: 5788342 (1998-08-01), Noguchi
Kelsey Hayes Company
Oberleitner Robert J.
Talavera Melanie
Tucker A. Michael
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