B - Operations – Transporting – 60 – T
Patent
B - Operations, Transporting
60
T
B60T 13/66 (2006.01) B60T 15/14 (2006.01) B61H 13/20 (2006.01)
Patent
CA 2556590
A control system which allows electro-pneumatic control of an equalizing reservoir with the capacity to create penalty applications in a purely pneumatic manner. A controller for the equalizing reservoir includes an electro- pneumatic source of pressure or atmosphere responsive to an electrical equalizing pressure control signal and a pilot valve selectively connecting the electro-pneumatic source or atmosphere to the equalizing reservoir in response to pressure in a pilot port of the first pilot valve. A magnetic valve is provided having a first input connected to a second source of pressure, a second input connected to atmosphere and an output connected to the pilot port of the first pilot valve. At least one penalty valve is connected to the pilot input of the first pilot valve and is responsive to a penalty signal to connect the pilot input to atmosphere. A fourth valve has a first input connected to the second input of the first pilot valve and an output connected to a third source of pressure lower than pressure in the equalizing reservoir prior to a penalty signal. The fourth valve connects its first input to its output in response to a penalty signal. A method of initializing the electro-pneumatic source of pressure or atmosphere responsive to an electrical equalizing pressure control signal
Pettit D. Mark
Reynolds John M.
Root Kevin B.
Teifke Richard J.
Borden Ladner Gervais Llp
New York Air Brake Corporation
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