Patent ID: 7028915

Claim:
A layover heating system for a locomotive comprising: a water tank, a water pump and first plumbing extending therebetween; an engine and second plumbing extending between the engine and the water pump; an aftercooler and third plumbing extending between the aftercooler and the water pump; a radiator and fourth plumbing extending between the engine and the radiator; fifth plumbing extending from the aftercooler and connected to the fourth plumbing extending between the engine and the radiator; an oil cooler and sixth plumbing extending between the radiator and the oil cooler; seventh plumbing extending between the oil cooler and the water pump; a layover pump and eighth plumbing extending between the water tank and layover pump; a heater and ninth plumbing extending between the heater and the layover pump; tenth plumbing extending from the electric heater and connected to the sixth plumbing extending from the radiator to the oil cooler, and a first check valve in the tenth plumbing, and an orifice in the tenth plumbing and intermediate the first check valve and the oil,cooler.