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Technical Paper

New V6-Diesel-Engine for the Daimler Van “Sprinter” Certified to Emission-Regulation NAFTA2007

2008-04-14
2008-01-1194
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 Effective January 2007 the NAFTA04 requirements have been replaced by the NAFTA07 values.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.
Technical Paper

Possible Exhaust Gas Aftertreatment Concepts for Passenger Car Diesel Engines with Sulphur-free Fuel

1999-03-01
1999-01-1328
In order to fulfill future emissions standards, there is a need for new exhaust-gas aftertreatment concepts, with NOx-emissions reduction in passenger car diesel engines being of particular importance. The NOx storage catalyst is one of the technologies currently under discussion with high NOx conversion potential, and which is under development at DaimlerChrysler for EURO IV standards. With this system, the nitrogen oxides contained in the diesel exhaust gas are stored under lean exhaust-gas conditions and are reduced in the catalyst through an enriched air-fuel ratio of the exhaust-gas and favorable thermal conditions. Hydrocarbons, carbon monoxide and hydrogen are used as reducing agents. DaimlerChrysler has analyzed the effect of sulphur contained in the fuel on the operation of various catalysts during laboratory and engine testing. The sulphur dioxide in the exhaust gas generates sulfates, which remain on the catalyst when nitrate compounds are regenerated briefly.
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