B - Operations – Transporting – 60 – T
Patent
B - Operations, Transporting
60
T
B60T 15/14 (2006.01) B60T 13/66 (2006.01) B60T 15/30 (2006.01) B60T 17/22 (2006.01)
Patent
CA 2466638
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 i.s responsive to a penalty signal to connect the pilot input to atmosphere. The pilot valve and the penalty valve pneumatically produce a brake application regardless of the state of the magnetic valve or its controller.
Pettit D. Mark
Reynolds John M.
Borden Ladner Gervais Llp
New York Air Brake Corporation
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