Next Generation of Ceramic Wall Flow Gasoline Particulate Filter with Integrated Three Way Catalyst NGK Insulators Limited

Format:

Conference/Event

Author/Creator:

Ito, Ito, author.

Contributor:

Aoki, Takashi

Kato, Kyohei

Kattouah, Philipp

Ohara, Etsuji

Sakamoto, Hirofumi

Shimoda, Takehide

Thier, Dominic

Vogt, Claus

Yuuki, Kazuya

Conference Name:

SAE 2015 World Congress & Exhibition (2015-04-21 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2015

Summary:

AbstractA Particle Number (PN) limit for Gasoline Direct Injection (GDI) vehicles was introduced in Europe from September 2014 (Euro 6b). In addition, further certification to Real Driving Emissions (RDE) is planned [1] [2], which requires low and stable emissions in a wide range of engine operation, which must be durable for at least 160,000 km. To achieve such stringent targets, a ceramic wall-flow Gasoline Particulate Filter (GPF) is one potential emission control device. This paper focuses on a catalyzed GPF, combining particle trapping and catalytic conversion into a single device. The main parameters to be considered when introducing this technology are filtration efficiency, pressure drop and catalytic conversion. This paper portrays a detailed study starting from the choice of material recipe, design optimization, engine bench evaluation, and final validation inside a standard vehicle from the market during an extensive field test up to 160,000 km on public roads. The collected results show that a high porosity catalyzed GPF has the potential to effectively and reliably reduce PN emissions over a wide range of engine operating points as shown by running several dynamic drive cycles and a field test. Even after collecting a certain amount of oil ash during the field test, and thus increasing exhaust aftertreatment system pressure drop, there is negligible impact on CO2 emissions and engine power output. Thus a ceramic wall-flow GPF is one of the potential solutions for future emission regulations beyond Euro 6

Notes:

Vendor supplied data

Publisher Number:

2015-01-1073

Access Restriction:

Restricted for use by site license