Patent ID: 6230668
Filing Date: 2001-05-15
Classification: F01P,F02B,Y02T

Abstract:
A locomotive engine having coolant passages formed therethrough and having a turbocharger for providing combustion air through an intercooler having coolant passages formed therethrough, the engine further having a cooling apparatus comprising:a first coolant loop comprising a radiator having an inlet connected to an outlet of the engine coolant passages, a first tank having an inlet connected to an outlet of the radiator and an outlet connected to an inlet of the engine coolant passages, a first stage of the intercooler having an inlet connected to the outlet of the first tank and an outlet connected to the inlet of the radiator, and a first pump operable to circulate coolant throughout the first coolant loop;a second coolant loop comprising a sub-cooler having an inlet connected to an outlet of a second stage of the intercooler, a second tank having an inlet connected to an outlet of the sub-cooler and having an outlet connected to an inlet of the second stage intercooler, and a second pump operable to circulate coolant throughout the second coolant loop; anda fluid connection between the first coolant loop and the second coolant loop.