Thermal influence on engine intake air

The influence of thermal underhood environment on the engine intake air for a race track application

Durability analysis of fouled EGR cooler

Cooled exhaust gas recirculation (EGR) is effective for the reduction of NOx raw emissions of internal combustion engines. The required cooler has to be designed to efficiently reduce the exhaust gas temperature by several hundred K. The hot exhaust gas on the one side and the coolant on the other side cause strong temperature gradients in the cooler. This effect leads to locally different thermal expansion. In combination with pressure differences between gas and coolant, high stresses are induced into the cooler material.

Complete engine thermal model

Thermal management has become a crucial issue in the design of modern vehicles. On one side, with high specific power outputs, the amount of excess heat to be disposed of is a serious challenge for vehicle reliability. On the other hand, at ordinary use, the excess heat available is limited and often insufficient to provide adequate heating to the cabin and to the catalytic converter controlling the vehicle harmful emissions. This is particularly true during the vehicle warm-up process in cold climates, significantly influencing real-world fuel consumption.