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Secondary Emission Control towards Post China 6 Legislation Umicore Autocat (China) Co Limited
- Format:
- Book
- Conference/Event
- Author/Creator:
- Lei, Zhao, author.
- Conference Name:
- SAE WCX Digital Summit (2021-04-13 : Live Online, Pennsylvania, United States)
- Language:
- English
- Physical Description:
- 1 online resource cm
- Place of Publication:
- Warrendale, PA SAE International 2021
- Summary:
- China 6 emission legislation was finalized in 2018. Although the full implementation nationwide is postponed to 2021 due to COVID-19, the post China 6 legislation is becoming a hot topic. It is foreseen that the new legislation will have more stringent primary and secondary emission requirement including further reduction of Nitrous Oxide (N2O) but likely to include limits on ammonia (NH3) emissions. This study investigated the secondary emissions id est N2O and NH3 from a variety of China 6 mass-produced gasoline vehicles equipped with different catalyst systems, under the Worldwide Harmonized Light Vehicles Test Cycle (WLTC) and Standardized Random Test aggressive (RTS 95). It was found that N2O emissions were less than 5 mg/km on all these vehicles, far below the current China 6 limit (20 mg/km), but NH3 emissions varied from 2 to 48 mg/km, which might raise some challenges in the future. The mechanism of N2O and NH3 formation and their correlation with regular emissions were also investigated and methods to reduce N2O and NH3 were discussed from the perspective of catalyst system design, including substrate volume, Platinum Group Metals (PGM), and washcoat loading. Finally, one catalytic solution was proposed and tested as an add-on device on selected vehicles, which particularly targeted to reduce NH3 emissions towards post China 6 legislation without significant negative impact on other regulated pollutants
- Notes:
- Vendor supplied data
- Publisher Number:
- 2021-01-0580
- Access Restriction:
- Restricted for use by site license
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