Patent ID: 6050230
Filing Date: 2000-04-18
Classification: F01P,Y10T

Abstract:
A locomotive cooling system comprising:a conduit adapted to conduct therethrough a flow of coolant;a power source providing a nominal voltage; anda valve assembly including a valve body defining a drain passage communicable with the conduit, a plunger movable between a closed position wherein the conduit and the drain passage are separated and an open position wherein the conduit and the drain passage are in fluid communication, a control for moving the plunger between the closed position and the open position, the control including a temperature sensor for detecting the coolant temperature and the control being connected to the power source, the control being operable to move the plunger from the closed position toward the open position at a first threshold coolant temperature when the power source voltage is nominal and being operable to move the plunger from the closed position toward the open position at a second threshold coolant temperature when the power source voltage deviates from nominal.