Optimised brake-apply sequence in electro-hydraulic (EHB) braking systems
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United States of America Patent
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app pub date -
Apr 10, 2003
filing date -
Oct 14, 2000
priority date (Note) -
Abandoned
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Abstract
A vehicle electro-hydraulic braking system of the type which can operate in a brake-by-wire mode wherein hydraulic pressure is applied to brake actuators (16a, 16b) at the vehicle wheels in proportion to the driver's braking demand (DD) as sensed electronically at a brake pedal (12), wherein the pressure demand (RBD) for the rear brake actuators (16b) is arranged to be delayed until at least one or two conditions has been fulfilled, namely (a) the pressure of at least one front brake actuator (16a) has reached a predetermined pressure (Pmin), and/or (b) a delay threshold (Tmax) of a predetermined level has been exceeded and/or wherein delivery to the fluid to the rearbrake actuators (16b) is limited to a predetermined value that is relatively low with respect to that for the front brakes.
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