Improved method of controlling brake pipe pressure

Details Improved method of controlling brake pipe pressure Improved method of controlling brake pipe pressure

B - Operations, Transporting

60

T

B60T 13/66 (2006.01) B60T 17/22 (2006.01) B61C 17/12 (2006.01) B61H 13/34 (2006.01)

Patent

CA 2241238

An improved method is used to control the pressure in the brake pipe of a train. The train is equipped with an automatic brake handle, an equalizing reservoir, a brake pipe control device and a computer for controlling the control device according to position of the handle. The method involves the steps of: moving the handle to a point along its range of motion; and storing in the computer as a setpoint the value desired for the pressure in the brake pipe. At whichever point the handle occupies along its range of motion, there is a particular pressure setpoint corresponding thereto. The method next includes the steps of: directing the computer to command the control device to modify the actual pressure in the equalizing reservoir to the setpoint thereby also causing the actual brake pipe pressure to approach the setpoint. As the actual brake pipe pressure approaches the setpoint, the computer is directed to command the control device to adjust the actual equalizing reservoir pressure to a value slightly above (if desiring to increase brake pipe pressure) or below (if desiring to decrease brake pipe pressure) the setpoint until the actual brake pipe pressure reaches the setpoint. While monitoring the actual brake pipe pressure, the computer then commands the control device to adjust the actual equalizing reservoir pressure to maintain the actual brake pipe pressure at the setpoint corresponding to position of the brake handle.

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