Method of determining maximum service brake reduction
First Claim
1. A method of determining maximum brake pipe reduction in a brake system of a train having a pneumatic brake on each car connected to a train brake pipe which is controlled by a brake pipe controller, the method comprising:
- determining status of the pneumatic brake on the cars through out the train; and
determining, using the status of the pneumatic brakes, a maximum brake pipe reduction for the brake pipe controller above which further reduction will not result in further brake application in the train.
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Accused Products
Abstract
A method of and a system for determining a maximum brake pipe service reduction in the brake system of a train having a pneumatic brake on each car connected to a brake pipe which is controlled by a brake pipe controller. The method includes determining the status of the brake system throughout the train and determining a maximum brake pipe reduction for the brake pipe controller, using the status of the brake system, above which further reduction will not result in further brake application in the train. The determined maximum brake pipe reduction is displayed by itself or in combination with the brake pipe reduction produced by the brake pipe controller and/or used for automatic control.
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Citations
40 Claims
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1. A method of determining maximum brake pipe reduction in a brake system of a train having a pneumatic brake on each car connected to a train brake pipe which is controlled by a brake pipe controller, the method comprising:
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determining status of the pneumatic brake on the cars through out the train; and
determining, using the status of the pneumatic brakes, a maximum brake pipe reduction for the brake pipe controller above which further reduction will not result in further brake application in the train. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method of determining maximum brake pipe reduction in a brake system of a train having a pneumatic brake on each car connected to a train brake pipe which is controlled by a brake pipe controller, the method comprising:
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determining equalization pressure of the brake system at each car;
determining the minimum determined car equalization pressure in the brake system; and
determining, using the minimum determined car equalization pressure, a maximum brake pipe reduction for the brake pipe controller above which further reduction will not result in further brake application in the train. - View Dependent Claims (20, 21, 22, 23, 24, 25)
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26. A method of determining maximum brake pipe reduction in a brake system of a train having a pneumatic brake on each car connected to a train brake pipe which is controlled by a brake pipe controller, the method comprising:
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determining a minimum car equalization pressure of the brake system;
determining a maximum brake pipe reduction using the minimum car equalization pressure if the minimum car equalization pressure is greater than a pressure value and using the pressure if the minimum car equalization pressure is less than the pressure value. - View Dependent Claims (27)
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28. A method of determining maximum brake pipe reduction in a brake system of a train having a pneumatic brake on each car connected to a train brake pipe which is controlled by a brake pipe controller, the method comprising:
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determining a minimum car equalization pressure of the brake system;
determining, using the minimum determined car equalization pressure, a maximum brake pipe reduction for the brake pipe controller;
determining a requested brake pipe reduction; and
indicating if the requested brake pipe reduction is more than the determined maximum brake pipe reduction.
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29. A method of displaying maximum brake pipe reduction in a brake system of a train having a pneumatic brake on each car connected to a train brake pipe which is controlled by a brake pipe controller, the method comprising:
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determining a minimum car equalization pressure of the brake system;
determining, using the minimum determined car equalization pressure, a maximum brake pipe reduction for the brake pipe controller;
determining a requested brake pipe reduction; and
displaying the determined maximum brake pipe reduction if the requested brake pipe reduction is greater than the determined maximum brake pipe reduction and displaying the requested brake pipe reduction if the requested brake pipe reduction is less than the determined maximum brake pipe reduction.
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30. A method of controlling maximum brake pipe reduction in a brake system of a train having a pneumatic brake on each car connected to a train brake pipe which is controlled by a brake pipe controller, the method comprising:
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determining a minimum car equalization pressure of the brake system;
determining, using the minimum determined car equalization pressure, a maximum brake pipe reduction for the brake pipe controller;
determining a requested brake pipe reduction; and
controlling the brake pipe controller to the determined maximum brake pipe reduction if the requested brake pipe reduction is greater than the determined maximum brake pipe reduction and controlling the brake pipe controller to the requested brake pipe reduction if the requested brake pipe reduction is less than the determined maximum brake pipe reduction.
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31. A locomotive display system for a train including a brake system having a pneumatic brake on each car connected to a train brake pipe which is controlled by a brake pipe controller, the display system comprising:
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a display of brake pipe reduction at the locomotive; and
a display of a maximum brake pipe reduction above which further reduction will not result in further brake application in the train. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38)
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39. A locomotive control system for a train including a brake system having a pneumatic brake on each car connected to a train brake pipe which is controlled by a brake pipe controller, the system comprising:
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means for determining a minimum car equalization pressure of the brake system;
means for determining, using the minimum determined car equalization pressure, a maximum brake pipe reduction for the brake pipe controller;
means for determining a requested brake pipe reduction; and
means for controlling the brake pipe controller to the determined maximum brake pipe reduction if the requested brake pipe reduction is greater than the determined maximum brake pipe reduction and controlling the brake pipe controller to the requested brake pipe reduction if the requested brake pipe reduction is less than the determined maximum brake pipe reduction. - View Dependent Claims (40)
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Specification