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Development of An Exhaust Aftertreatment System for Diesel Passenger Cars-Simultaneous Reduction System of Nox and Particulate Matter
Published July 23, 2002 by Society of Automotive Engineers of Japan in Japan
Event: 2002 JSAE Annual Congress
A compact diesel engine with DPNR (Diesel Particulate NOx Reduction system) has been developed. A very low exhaust emission level, less than half of the European STEP4 regulation standard, is achieved. The new catalytic converter for DPNR consists of a monolithic substrate made of ceramics with a NOx storage reduction catalyst coating. It enables both NOx and particulate matter to be reduced simultaneously. In combination with the new catalyst technology, engine improvements will also be essential to reduce base emissions and to allow the use of the catalyst to its full potential.