General Electric Company

Brian L Walter

Mahesh Chand Aggarwal

Gregory Alan Marsh

Peter Loring Valentine

Susan M Napierkowski

William Douglas Glenn

Sandeep Banga

Gerald Edward Lacy

Robert A Armbruster

Vinh K Do

Abul Kalam Mohammad Shariful Islam

A locomotive includes an engine (), an intercooler (), and an oil cooler (), each having respective cooling passages formed therein. The locomotive also includes a cooling system () in selective communication with the respective cooling passages for selectively providing a first coolant () and a second coolant () at a higher temperature than the first coolant to the cooling passages. A method of operating the cooling system includes providing, in a first mode, a first coolant flow () to the intercooler and a second coolant flow () to the oil cooler at a first temperature different than the first coolant flow to achieve preferential cooling of the intercooler. The method also includes providing, in a second mode, the first coolant flow to the intercooler and the second coolant flow to the oil cooler at a second temperature different than the first coolant flow to achieve preferential cooling of the oil cooler.

Integrated engine control and cooling system for diesel engines

A cooling apparatus ( ) and method for a turbocharged internal combustion engine ( ). The combustion air ( ) exiting a turbocharger ( ) is passed over an air-to-water intercooler ( ) then over an air-to-air intercooler ( ) for heat exchange with liquid coolant and with ambient air ( ) respectively. During periods of low ambient air temperature, the combustion air may be directed through a bypass duct ( ) around the air-to-air intercooler, and further, may be heated by the coolant in the air-to-water intercooler. A multi-speed fan ( ) and/or shutters ( ) may be used to control the flow of ambient air across the air-to-air intercooler. A cooling duct ( ) provides a flow of ambient air to the fan motor ( ) during periods of operation when the flow of ambient air over the air-to-air heat exchanger is restricted by the shutters. Coolant exiting a subcooler ( ) has the lowest temperature in the system and is directed to a lube oil cooler ( ) for engine lubricant cooling.

Temperature control for turbocharged engine

A cooling system (,) for a turbocharged locomotive engine (,) including a two stage intercooler (,) for conditioning the combustion air (,). A first coolant loop (,) includes a first stage intercooler (,), the engine coolant passages (,), a radiator (,), a first tank (,), an oil cooler (,), and a first pump (,). A second coolant loop (,) includes a second stage intercooler (,) a subcooler (,), a second tank (,), and a second pump (,). A fluid connection is provided between the first coolant loop (,) and the second coolant loop (,) to provide heat there between during conditions of overcooling of the second coolant loop (,). Flow control valves forming a portion of first coolant loop (,) may be embodied in a single rotor-sleeve flow control valve (,).

Locomotive cooling system

Growing community of inventors

Erie, PA, United States of America

Brian L Walter