COMBINED COOLING SYSTEM FOR LOCOMOTIVE TRACTION CONVERTER AND ENGINE (VERSIONS) Russian patent published in 2009 - IPC B61C17/00 B60L11/02 

FIELD: transport.

SUBSTANCE: cooling system includes traction converter transistor coolers and engine cooling system comprising hot and cold liquid cooling circuits and oil circuit. The hot cooling circuit includes engine liquid-cooling chambers. The cold cooling circuit includes air-liquid cooler and charge air and oil coolers, and the oil circuit includes an oil pump, engine oil chambers and oil cooler. The hot and cold cooling circuits are interconnected with intercircuit bypass branches. In the first version traction converter transistor coolers are integrated into the engine cooling circuit, and in the second version they are integrated into the oil circuit of the engine cooling system.

EFFECT: higher converter cooling efficiency, simplified cooling system and improved transistor reliability during winter operation.

2 cl, 3 dwg