Search Results

A common rail injection system was applied to port-loop and uniflow scavenged two-stroke DI-Diesel engines. While the uniflow scavenged configuration was operated with a swirl level comparable to that of 4-stroke DI-Diesel engines, no swirl motion was realized with the port-loop scavenged arrangement. The results show that, in spite of disadvantages in the mixture formation process, the high mixture formation energy observed with the common rail injection makes a swirl-free Diesel combustion possible. However, at part load the combustion process and emission level with the port-loop scavenged engine is not satisfactory. At full load, disadvantages in the scavenging process are observed in addition to the poorer mixture formation with the loop scavenged two-stroke concept. Consequently, the expected specific power output of the port-loop scavenged arrangement is with 20 kW/l far lower than about 45 kW/l predicted for the uniflow scavenged engine.

The new Sprinter targets the USA and Canada markets nationwide to reconfirm Daimlers statement for Diesel engine in vans. Consequentially, the MY2007 Sprinter follows his successful predecessor as again the first - and up to now the only - Diesel vehicle in its class now meeting even the strict EPA07 requirement in California. For the growing market in North America an unique development for the successor for the previous 5-cylinder Diesel Sprinter had been made. The new 3 liter V6 Diesel engine is based on numerous corporate wide versions from Mercedes and Chrysler Passenger cars and SUVs and has its roots also in smaller and larger Mercedes vans. Effective January 2007 the NAFTA04 requirements have been replaced by the NAFTA07 values. Meeting those led to significant changes of the latest Sprinter in European EURO4 version. Both, engine and exhaust hardware as well as the ECU-data had been modified consequentially.