Trailer braking in electronically controlled braking systems

Details Trailer braking in electronically controlled braking systems Trailer braking in electronically controlled braking systems

1989-11-17

1991-09-24

Graham, Matthew C.

Fluid-pressure and analogous brake systems

Multiple fluid-receiving devices

Multiple motors

303 3, 303 20, B60T 1368

Patent

active

050509381

ABSTRACT:
An electronic braking system (EBS) for a towing vehicle which provides for trailer service brake pressure supply via an additional EBS sub-system, and wherein, in order to speed up the application of trailer braking, the electrical signal representing the driver's braking demand is processed to generate an additional pressure pre-pulse of predetermined amplitude to pressurise the trailer braking circuit in advance of the proportional pressure setting determined by the driver. The pre-pulse is made up of two parts, a preset fixed duration pulse followed without break by a variable duration continuation pulse. The variable duration of the variable duration pulse is determined primarily by the rate of increase of the driver's demand signal.

REFERENCES:
patent: 3909075 (1975-09-01), Pittet, Jr. et al.
patent: 3967863 (1976-07-01), Tomecek et al.
patent: 4084859 (1978-04-01), Bull et al.
patent: 4210368 (1980-07-01), Sontheimer
patent: 4586584 (1986-05-01), Auman et al.

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