Understanding the Role of Filtered EGR on PM Emissions University of Birmingham

Format:

Conference/Event

Author/Creator:

Gill, Gill, author.

Contributor:

Tsolakis, A.

Turner, D.

York, A. P. E.

Conference Name:

SAE International Powertrains, Fuels and Lubricants Meeting (2011-08-30 : Kyoto, Japan)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2011

Summary:

In earlier work we have shown that engine operation with oxygenated fuels (e.g., biodiesel) reduces the particulate matter (PM) emissions and extends the engine tolerance to exhaust gas recirculation (EGR) before it reaches smoke limited conditions. The same result has also been reported when high cetane number fuels such as gas-to-liquid (GTL) are used. A likely mechanism for engine-out particulate growth is the reintroduction of particle nuclei into the cylinder through EGR. These recirculated PM particles serve as sites for further condensation and accumulation promoting larger and greater number of particles. In order to further our understanding of EGR influence on total PM production, a diesel particulate filter (DPF) was integrated into the EGR loop. A PM reduction of approximately 50% (soot) was achieved with diesel fuel through filtered EGR, whilst still maintaining a significant NOX reduction. The result is that diesel engines can therefore be operated above their current maximum EGR potential, thus not penalizing NOX performance

Notes:

Vendor supplied data

Publisher Number:

2011-01-2080

Access Restriction:

Restricted for use by site license