Fluid-pressure and analogous brake systems – Multiple fluid-receiving devices – Multiple motors
Patent
1989-11-17
1992-01-14
Graham, Matthew C.
Fluid-pressure and analogous brake systems
Multiple fluid-receiving devices
Multiple motors
303 15, B60T 1300
Patent
active
050804456
ABSTRACT:
An electronic braking system in a motor vehicle capable of towing a standard trailer not having its own EBS system has a separate pressure control channel for the generation of a trailer service brake pressure signal in the event that a driver's braking demand is sensed at any axle of the towing vehicle. The pressure signal level is set in the towing vehicle so as to be a function of the driver's electrical demand signal modified in dependence upon the load exerted by the trailer on the towing vehicle as measured at a towing link therebetween. Separate adaptive loops are provided in respect of the towing vehicle braking and the trailer braking, with the towing vehicle adaptive loop being responsive to deceleration error established by a comparison of vehicle retardation against driver braking demand, and with the trailer adaptive loop being responsive to towing link load, such as to obtain error signals which cause the adaptive adjustments to be made in the two loops in a mutually co-ordinated manner in order to achieve the required overall vehicle retardation.
REFERENCES:
patent: 3981542 (1976-09-01), Abrams et al.
patent: 4553788 (1985-11-01), Smith
patent: 4616881 (1986-10-01), Muller et al.
patent: 4629256 (1986-12-01), Fannin
patent: 4712839 (1987-12-01), Brearley et al.
patent: 4768840 (1988-09-01), Sullivan et al.
Brearley Malcolm
Moseley Richard B.
Graham Matthew C.
Lucas Industries Public Limited Company
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