General Electric Company

Gerald Edward Lacy

Ajith Kuttannair Kumar

Bret Dwayne Worden

John Patrick Dowell

Mahesh Chand Aggarwal

Susan M Napierkowski

William Douglas Glenn

Brian L Walter

Sandeep Banga

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

An adaptive fuel limit function () for protecting an internal combustion engine. The adaptive fuel limit function is a learning function responsive to trends in an engine performance parameter such as compensated fuel consumption per unit of power produced (). The engine performance parameter is processed through a low pass filter () to allow changes in a fuel limit signal () in response to gradual changes in the fuel demand, such as may be due to wear in the engine, while blocking changes in the fuel limit signal in response to sudden changes in the fuel demand, such as may be due to a cylinder failure. The difference between the input and the output of the low pass filter may be processed to identify a failure level () for providing an alarm function distinct from the learning function.

Adaptive fuel control for an internal combustion engine

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Erie, PA, United States of America

Gerald Edward Lacy