Exhaust gas recirculation cooler for exhaust gas recirculation in internal combustion engine, particularly diesel engine of motor vehicle, has surface structure configured such that micro-vortex is formed in wall layer flow of exhaust gas

摘要

The exhaust gas recirculation cooler (14) has an inner wall (20) with a catalytic coating for heat exchange between the exhaust gas flowing through the exhaust gas recirculation cooler and the surrounding. The inner wall has a surface design that prevents the formation of deposits on the inner wall and that allows the removal of existing deposits. A surface structure (22) is mounted on the inner wall, which influences the flow characteristics of the exhaust gas in the vicinity of the inner wall, and is configured, such that micro-vortex is formed in the wall layer flow of the exhaust gas. An independent claim is included for a motor vehicle with an internal combustion engine and an exhaust gas recirculation cooler.