Exhaust gas recirculation (EGR)

The reduction of pollutant emissions—particularly of nitrogen oxide emissions in diesel engines—is an important task within the development process. Engine-internal methods such as exhaust gas recirculation seek to reduce raw emissions during combustion itself.

EGR valves
Exhaust gas recirculation (EGR) will continue to further reduce nitrogen oxide emissions in the future. However, it requires quickly and precisely controllable regulating devices with high actuating forces. This is the only way to control high EGR mass flow rates with precision and ensure reliable operation. MAHLE EGR valves fulfill these tasks. The transmission design allows very high breakaway torque, secure retention at any desired position, precise dosing, and high actuation speeds. The mechanics of the valve tappet are designed with zero transverse force for maximum service life.

EGR coolers
Further information Cooling