Comparison of Solid Particle Number Emission of Gasoline Direct Injection Vehicles between CVS and Tailpipe Samplings

Kazuki Nakamura; Izumi Fukano; Seiichi Hosogai; Christos Dardiotis; Christoph Kandlhofer

doi:10.20485/jsaeijae.12.4_142

International Journal of Automotive Engineering

Online ISSN : 2185-0992
Print ISSN : 2185-0984
ISSN-L : 2185-0992

Research Paper

Comparison of Solid Particle Number Emission of Gasoline Direct Injection Vehicles between CVS and Tailpipe Samplings

Kazuki Nakamura, Izumi Fukano, Seiichi Hosogai, Christos Dardiotis, Christoph Kandlhofer

Author information

Keywords: environment, emissions, solid particle number, gasoline direct injection engines

JOURNAL OPEN ACCESS

2021 Volume 12 Issue 4 Pages 142-149

DOI https://doi.org/10.20485/jsaeijae.12.4_142

Details

Abstract

In order to investigate the difference of SPN emission from G-DI vehicles, which is caused by sampling locations, ninety-six tests were conducted at three vehicle benches with each two particle counters; the one was deployed at a CVS tunnel in compliance with UNECE Regulation 83 whereas the other was equipped at tailpipe with a pitot-type exhaust flow meter considered as a practice for RDE frontloading developments. As a result, the differences of all tests were within ± 30 %. This was attributed to internal particle processes as well as misalignment of signals between particle number concentration and exhaust flow rate.

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