Development of EGR Coolers for Truck and Passenger Car Application

The new European legislation (EURO III) for emission reduction was mainly reached by combustion optimization. This lead to a higher fuel consumption, which can be compensated by cooled EGR. One of the described coolers is the first known EGR cooler for series truck application in Europe and is in production since mid of year 2000. Also for the next legislation step (EURO IV) cooled EGR is one of the most promising solutions. The design criteria and production issues of a tube and shell type EGR cooler for truck application and a tube plate design for a high volume production cooler for passenger car will be described.