Selectable grade and uniform net shoe force braking for railway

Details Selectable grade and uniform net shoe force braking for railway Selectable grade and uniform net shoe force braking for railway

1996-04-15

1998-07-28

Poon, Peter M.

Fluid-pressure and analogous brake systems

Multiple fluid-receiving devices

Multiple motors

303 20, B60T 1300

Patent

active

057853924

ABSTRACT:
A railway freight brake method and apparatus for operating vehicles in a freight train having a locomotive and a number of railway freight vehicles wherein the individual railway freight vehicles can be controlled in a grade descending mode. When desired, such as when the locomotive transmits a grade mode signal to the individual vehicles, the individual vehicles can brake to produce a generally uniform net shoe force on the wheels of the vehicles. The generally uniform net shoe force can be limited on each vehicle to a value or ratio, such as a percentage of net braking ratio of the given vehicle. On-board calculations can be done in a microprocessor to calculate the vehicle brake cylinder pressure corresponding to the desired net shoe force. This calculation can be done using car parameters stored on-board the vehicle.

REFERENCES:
patent: 5551765 (1996-09-01), Sich

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