Variable load EP brake control system

Details Variable load EP brake control system Variable load EP brake control system

1996-09-10

1997-09-02

Ballato, Josie

Fluid-pressure and analogous brake systems

Multiple fluid-receiving devices

Multiple motors

303 20, B60T 1300

Patent

active

056623895

ABSTRACT:
A method of controlling brakes of a car having electropneumatic brake valves, by determining the weight of the car and calculating the ratio of brake cylinder pressure to train brake command for the car using the weight of the car. Brake cylinder pressure is then determined using the brake train command and the calculated ratio and the brake cylinder pressure is controlled to the determined brake cylinder pressure. The ratio of the brake cylinder to pressure train brake command is calculated by first calculating a full service brake cylinder pressure for the pneumatic car and preferably using a fixed braking ratio. The rate of change of the brake cylinder pressure is also determined as a function of the weight.

REFERENCES:
patent: 3285674 (1966-11-01), Eaton
patent: 4188070 (1980-02-01), Grenier
patent: 4344138 (1982-08-01), Fraiser
patent: 4402047 (1983-08-01), Newton et al.
patent: 4421360 (1983-12-01), Newton
patent: 4624506 (1986-11-01), Doto
patent: 5080445 (1992-01-01), Brearley et al.
patent: 5211450 (1993-05-01), Gayfer et al.
patent: 5405182 (1995-04-01), Ewe et al.
patent: 5551765 (1996-09-01), Sich

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