Simultaneous Reduction of NOX and Soot in a Diesel Engine through RCCI Operation with PFI of n-butanol and DI of Cottonseed Biodiesel Georgia Southern Univ

Format:

Conference/Event

Author/Creator:

Soloiu, Soloiu, author.

Contributor:

Duggan, Marvin

Harp, Spencer

Muinos, Martin

Peavy, Wallace

Rivero-Castillo, Alejandro

Vlcek, Brian

Wolter, Sven

Conference Name:

SAE 2014 World Congress & Exhibition (2014-04-08 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2014

Summary:

This study presents the combustion and emissions characteristics of Reactivity Controlled Combustion Ignition (RCCI) produced by early port fuel injection (PFI) of low reactivity n-butanol (normal butanol) coupled with in cylinder direct injection (DI) of cottonseed biodiesel in a diesel engine. The combustion and emissions characteristics were investigated at 5.5 bars IMEP at 1400 RPM. The baseline was taken from the combustion and emissions of ULSD #2 which had an ignition delay of 13° CAD or 1.5ms. The PFI of n-butanol and DI of cottonseed biodiesel strategy showed a shorter ignition delay of 12° CAD or 1.45ms, because of the higher CN of biodiesel. The combustion proceeded first by the ignition of the pilot (cottonseed biodiesel) BTDC that produced a premixed combustion phase, followed by the ignition of n-butanol that produced a second spike in heat release at 2° CAD ATDC. The addition of n-butanol into the cycle reduced the compression and peak temperature by 100K and resulted in 35% NOx and 90% soot reduction. Adding 20% cooled EGR further reduced the NOx to a total of 50%. The results suggest that early PFI of n-butanol combined with cottonseed biodiesel resulting in RCCI, may be an effective way of reducing emissions of NOx and soot when compared to the baseline of ULSD #2

Notes:

Vendor supplied data

Publisher Number:

2014-01-1322

Access Restriction:

Restricted for use by site license