Fluid-pressure and analogous brake systems – Speed-controlled – Having a valve system responsive to a wheel lock signal
Patent
1996-07-08
1997-12-23
Oberleitner, Robert J.
Fluid-pressure and analogous brake systems
Speed-controlled
Having a valve system responsive to a wheel lock signal
3031154, 3031161, B60T 832
Patent
active
057000697
ABSTRACT:
The present invention is directed to an anti-skid control system which includes a pressure generator to supply a hydraulic braking pressure into a wheel brake cylinder through an actuator. A return passage is provided for communicating the wheel brake cylinder with the actuator. A pressure pump is disposed in the return passage, and a reservoir is disposed in the return passage at the inlet port's side of the pump. The reservoir stores the brake fluid discharged from the wheel brake cylinder through the actuator to decrease the wheel cylinder pressure. The actuator blocks the communication between the pressure generator and the wheel brake cylinder, and then the pump discharges the brake fluid stored in the reservoir into the return passage thereby to gradually increase the wheel cylinder pressure. A first fluid estimating device estimates a first amount of brake fluid supplied from the pressure generator into a hydraulic circuit disposed downstream of the actuator and including the wheel brake cylinder and the reservoir. And, a fluid supply allowing device allows the actuator to communicate the pressure generator with the wheel brake cylinder, when the first amount of brake fluid is smaller than a first predetermined amount.
REFERENCES:
patent: 5368374 (1994-11-01), Fujimoto
patent: 5494345 (1996-02-01), Inagaki et al.
patent: 5501514 (1996-03-01), Resch et al.
patent: 5522650 (1996-06-01), Negrin et al.
patent: 5531514 (1996-07-01), Hishii et al.
patent: 5620238 (1997-04-01), Takeuchi
Kamikado Masaru
Sakane Shinsuke
Yokoyama Satoshi
Aisin Seiki Kabushiki Kaisha
Oberleitner Robert J.
Schwartz Chris
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