Integrated engine control and cooling system for diesel engines

摘要

A locomotive includes an engine (12), an intercooler (16), and an oil cooler (28), eachhaving respective cooling passages formed therein. The locomotive also includesa cooling system (10) in selective communication with the respective coolingpassages for selectively providing a first coolant (56) and a second coolant(52) at a higher temperature than the first coolant to the cooling passages. Amethod of operating the cooling system includes providing, in a first mode, afirst coolant flow (26) to the intercooler and a second coolant flow (30) to the oilcooler at a first temperature different than the first coolant flow to achieve preferentialcooling 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 oilcooler at a second temperature different than the first coolant flow to achievepreferential cooling of the oil cooler.