초록 ▼

A cooling system (10) for a turbocharged locomotive engine (12) including a two stage intercooler (20) for conditioning the combustion air (16). A first coolant loop (32) includes a first stage intercooler (38), the engine coolant passages (22), a radiator (34), a first tank (36), an oil cooler (30)

A cooling system (10) for a turbocharged locomotive engine (12) including a two stage intercooler (20) for conditioning the combustion air (16). A first coolant loop (32) includes a first stage intercooler (38), the engine coolant passages (22), a radiator (34), a first tank (36), an oil cooler (30), and a first pump (40). A second coolant loop (42) includes a second stage intercooler (44) a subcooler (48), a second tank (46), and a second pump (50). A fluid connection is provided between the first coolant loop (32) and the second coolant loop (42) to provide heat there between during conditions of overcooling of the second coolant loop (42). Flow control valves forming a portion of first coolant loop (32) may be embodied in a single rotor-sleeve flow control valve (130).

대표청구항 ▼

[ We claim as our invention:] [1.]1. 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 loo

[ We claim as our invention:] [1.]1. 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.