Load sensing control valve

Details Load sensing control valve Load sensing control valve

B - Operations, Transporting

60

T

303/87

B60T 8/28 (2006.01)

Patent

CA 1101022

LOAD SENSING CONTROL VALVE ABSTRACT OF THE DISCLOSURE A valve for use in vehicle hydraulic brake systems for the purpose of limiting the rear wheel brake pressure relative to the front wheel brake pressure. in order to reduce the potential for premature rear wheel lock,. The valve includes a proportioning piston which operates to limit the fluid pressure delivered to the rear wheel brakes and an inertia member which senses changes in vehicle loading. When a vehicle is fully loaded, the inertia member remains in a position where it will disable the proportioning piston in its open position and, consequently, The rear wheel brake pressure will be equal to the front wheel brake pressure. When the same vehicle is unloaded, the inertia member moves in response to deceleration to a position where it will not: disable the proportioning piston in its open posi- tion so that the rear wheel brake pressure will be reduced relative to the front wheel brake pressure. The valve may also include a valve assembly which by- passes the proportioning piston to increase the rear wheel brake pressure subsequent to a period when the rear wheel brake pressure is limited. - 1 -

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