A Study of Ash Accumulation on Gasoline Particulate Filter through On-Road Fleet Durability Testing

Autoren

Dominik Rose, Dr. Thorsten Boger, Corning GmbH, Wiesbaden;
Zhihui Lv, Weiwei Li, Xianzhe Zeng, Qiuxian He, Dr. Suhao He, Corning CSCL, Shanghai, P.R. China;
Ruifeng Zhang, Hongyu Zou, Ching Mei Ang, Lubrizol Management (Shanghai) Co., Ltd., Shanghai, P.R. China;
Keith Howard, Paul Kirkman, Lubrizol Limited, Hazelwood

Zusammenfassung

The enhanced emission regulations of the European Union (EU6) and China (CN6) call for a substantial reduction in not only particulate mass (PM) but also particulate number (PN) emissions from gasoline vehicles. To meet such stringent legislation, the most prominent particulate emission abatement technology for gasoline vehicles is a wall flow filter known as gasoline particulate filter (GPF). In this work, a real-world ninevehicle fleet testing was conducted for 160,000 km to investigate the impact of three lubricant oils, differing in sulfated ash content, on the performance of GPFs. GPF performance was assessed through back pressure and filtration efficiency. The ash was
characterized in terms of ash accumulation rate, ash distribution, morphology and composition.

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