Recently, researches are actively carried out to replace the ATF warmer and cooler functions with a single heat exchanger in order to improve fuel efficiency. The ATF oil, which has high viscosity at low temperature when starting up, is rapidly warmed...
Recently, researches are actively carried out to replace the ATF warmer and cooler functions with a single heat exchanger in order to improve fuel efficiency. The ATF oil, which has high viscosity at low temperature when starting up, is rapidly warmed up through engine coolant to reduce friction loss. The effect of design variables on the performance of the heat exchanger was investigated through CFD to optimize design of heat exchanger to cool high temperature ATF oil through low temperature engine coolant. Based on the analyzed result, the prototype was fabricated. The performance of the prototype was examined through experiments and compared with the analyzed results.