Cascaded indirect integrated charge air cooling for passenger car diesel engines

Abstract

Raising specific power output in a turbocharged engine with reduced displacement is a common way to achieve low fuel consumption and emission values without sacrificing driving performance. However, the combustion process, the engine and its components, and the engine peripherals are subjected to significant effects. The technological effort increases while the thermal and mechanical loads are more intense. Increasingly greater charge air pressures and the associated rising temperatures, as well as more stringent emission regulations require more efficient charge air cooling systems that allow further reductions in charge air temperature. MAHLE has recently developed and presented integrated cascaded charge air cooling in the air intake module for gasoline engines.