After Treatment System CNG EU VII going the extra mile All You Need From Turbo To Tailpipe Three Way Catalysts WHTC g/kwh 2,4 0,50 0,35 0,04 0,01 0,06 0,04 0,07 0,14 0,06 0,00 0,12 0,49 0,02 0,28 WHTC g/kwh 2,4 0,50 0,35 0,24 0,23 0,32 0,38 0,45 0,36 0,31 0,46 0,26 0,37 0,53 0,26 3 PGM > 100 g/cft 2,5 600 cpsi 6 mil Pt:Pd 2 Ageing 950 °C x 24 h 1,5 1 0,5 2,5 PGM ≤ 100 g/cft 600 cpsi 6 mil 2 Pt:Pd:Rh Ageing 850 °C x 10 h 1,5 1 0,5 0 EU VII Sample 1 Sample 1 Sample 2 Sample 2 expected fresh aged fresh aged CO CH4 NOx 0 EU VII Sample 3 Sample 3 Sample 4 Sample 4 expected fresh aged fresh aged CO CH4 NOx Considering the expected emission limits for EU VII Dinex TWC technologies are flexible in terms of precious metal content to adapt to the application needs with Pt:Pd or trimetallic options that can be tailored to address high NO X , low exhaust temperature and even potentially new regulations like N 2 O. Selective Ammonia Oxidation Catalyst 25 23 20 SAOC / NEDC 600 cpsi 3 mil Pt: 0-2 g/cft 15 10 5,5 5 3,1 2,5 1,7 0 TWC aged Sample A fresh Sample A aged Sample B fresh Sample B aged 12 10 10 SAOC/ WHTC 600 cpsi 3 mil Pt 2 g/cft 8 6 4,3 4 1,8 2 0 0 0 Expected Limit (TWC sample 3+ (TWC sample (TWC sample 4 (TWC sample 4 + SAOC )fresh 3+SAOC) aged +SAOC)fresh SAOC)aged Under NEDC conditions we look at the potential of the tech- nology using a heavily aged TWC (produces 23 ppm NH3). Both options A and B convert the ammonia produced in the TWC with various degrees of efficiency keeping ammonia low. TWC upstream from SAOC is the same, Sample A and B are different. Ageing 700 °C x 10 h Under WHTC conditions the technology shows consistent behavior in a heavy duty relevant environment against the current ammonia limit, both samples deliver well within the legislation limits. TWC upstream from SAOC are different, SAOC samples are the same. Ageing 800 °C x 10 h Dinex.net ppm 2 g/cft Pt No PGM ppm
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