Locomotive engine cooling system drain valve with low...

F - Mech Eng,Light,Heat,Weapons – 01 – P

Patent

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Details

F01P 11/20 (2006.01) F01P 11/02 (2006.01) F01P 7/14 (2006.01)

Patent

CA 2244258

A locomotive cooling system (2) including a conduit (4) adapted to conduct therethrough a flow of coolant; a power source providing a nominal voltage; and a valve assembly (10) including a valve body (14) defining a drain passage (30) communicable with the conduit (4), a plunger (42) movable between a closed position in which the conduit (4) and the drain passage (30) are separated and an open position in which the conduit (4) and the drain passage (30) are in fluid communication. A control assembly (50) moves the plunger (42) between the closed position and the open position. The control assembly (50), including a temperature sensor for detecting the coolant temperature, and connected to the power source. The control assembly (50) opening the valve assembly (10) when the system (2) is either at a first threshold coolant temperature when the power source voltage is nominal or a second threshold coolant temperature when the power source voltage is low.

Système de refroidissement pour locomotive (2) comprenant un conduit (4) assurant l'écoulement d'un fluide de refroidissement; une source d'énergie fournissant une tension nominale, et un ensemble vanne (10) comportant un corps de vanne (14) définissant un passage de vidange (30) pouvant communiquer avec le conduit (4), un piston (42) pouvant se déplacer entre une position fermée, dans laquelle le conduit (4) et le passage de vidange (30) sont séparés et une position ouverte dans laquelle le conduit (4) et le passage de vidange communiquent pour le passage de fluides. Un ensemble de commande (50) déplace le piston (42) entre la position fermée et la position ouverte. L'ensemble de commande (50) comporte un capteur de température permettant de détecter la température du fluide de refroidissement et est relié à la source d'énergie. L'ensemble de commande (50) ouvre l'ensemble vanne (10) lorsque le système (2) se trouve soit à un premier seuil de température de fluide de refroidissement, pour une tension nominale de la source d'énergie, soit à un deuxième seuil de température de liquide de refroidissement pour une tension faible de la source d'énergie.

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