Fluid-pressure and analogous brake systems – Speed-controlled – Having a valve system responsive to a wheel lock signal
Patent
1986-12-19
1988-07-05
Butler, Douglas C.
Fluid-pressure and analogous brake systems
Speed-controlled
Having a valve system responsive to a wheel lock signal
180197, 188181R, 188195, 188349, 303100, 303111, 303116, 303119, 303 969, 303 221, 303 241, 303DIG4, 303114, B60T 804
Patent
active
047550082
ABSTRACT:
A braking system having a pressure modulator which, during normal braking operation, delivers a fluid pressure which is a predetermined multiple of a fluid pressure generated by the master cylinder to a wheel cylinder. The pressure modulator has a solenoid actuator which is energized during braking force proportioning and anti-skid operations to reduce the delivery pressure. In a preferred embodiment, the pressure modulator further includes another solenoid actuator for increasing the delivery pressure during braking force proportioning operation and for delivering fluid pressure during traction control operation.
REFERENCES:
patent: 4093316 (1978-06-01), Reinecke
patent: 4575161 (1986-03-01), Vanzant et al.
patent: 4627671 (1986-12-01), Matsui et al.
patent: 4630871 (1986-12-01), Imoto et al.
patent: 4636009 (1987-01-01), Tsuru et al.
patent: 4637664 (1987-01-01), Arikawa
patent: 4685749 (1987-08-01), Otsuki et al.
patent: 4687260 (1987-08-01), Matsui et al.
Hattori Yoshiyuki
Imoto Yuzo
Takei Toshihiro
Uno Haruhiko
Wakata Hideo
Butler Douglas C.
Nippondenso Co. Ltd.
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