Force modulator

Details Force modulator Force modulator

B - Operations, Transporting

60

T

303/73

B60T 8/32 (2006.01) B60T 8/40 (2006.01)

Patent

CA 1242233

BRAKING FORCE MODULATOR ABSTRACT OF INVENTION The present invention relates to a braking force modulator for an anti-lock system for pneumatic brakes for vehicles in which a hydraulic circuit accomplishes the anti-lock function. A sensor sensing the state of rotation of a wheel emit signals for controlling a modulator valve (34) which, in response to such signals modulates the pressure in one or more counter-pressure cylinders (27). A closing valve is inserted into the pressurized-air conduit (4) between the control valve (5) for the brake operated by the driver and one or more braking cylinders (8) and this closing valve closes the pressurized-air supply to the braking cylinder or cylin- ders (8) subsequent to a sensor signal ordering release of the brakes. A release valve is inserted into the pressurized-air conduit (4) between the closing valve and the braking cylinder or cylinders (8) for dis- charging pressurized air therefrom if the ability of the pressure producer (13, 26) for the hydraulic fluid pres- sure and of the counter-pressure cylinder (27) to con- tinue the release of the brake is exceeded.

466322

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