Fluid-pressure and analogous brake systems – Speed-controlled – Having a valve system responsive to a wheel lock signal
Patent
1997-12-15
1999-10-19
Schwartz, Chris
Fluid-pressure and analogous brake systems
Speed-controlled
Having a valve system responsive to a wheel lock signal
303DIG10, B60T 840
Patent
active
059676256
ABSTRACT:
A braking system includes a master cylinder that is operational to introduce a manually effected braking pressure in the braking system and includes a wheel brake that is responsive to the manually effected braking pressure. A modulator is interconnected in the braking system between the master cylinder and the wheel brake and includes a pump that has an inlet and an outlet wherein the inlet is in continuous open fluid communication with the wheel brake through a first fluid passageway. The first fluid passageway is free of any flow restrictive orifices and the first fluid passageway is not in fluid communication with an accumulator. The modulator also includes a normally open valve that is positioned in a second fluid passageway and the second fluid passageway extends between the wheel brake and both the pump outlet and the master cylinder. During base brake operation of the braking system, the pump and the valve remain unoperated so that the manually effected pressure is freely transmitted to the wheel brake. During ABS release operation, the pump is turned on and the valve is energized to close, blocking the second fluid passageway so that a reduced wheel brake fluid pressure is effected at the wheel brake and a rate of reduction of the wheel brake pressure is established that is directly proportional to, and from a mechanical effect standpoint, is a result solely of pump flow rate.
REFERENCES:
patent: 5529388 (1996-06-01), Yasui
patent: 5538336 (1996-07-01), Reuter et al.
patent: 5590936 (1997-01-01), Reuter
patent: 5607208 (1997-03-01), Reuter et al.
patent: 5609401 (1997-03-01), Johnston et al.
patent: 5618087 (1997-04-01), You
patent: 5890778 (1999-04-01), Sager
Lloyd Earl Wayne
Reuter David Fredrick
General Motors Corporation
Schwartz Chris
Sigler Robert M.
LandOfFree
Braking system with independent antilock control channels does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Braking system with independent antilock control channels, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Braking system with independent antilock control channels will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2047107