Effects of HPL and LPL EGR Gas Mixed Supply on Combustion and Emissions in Automotive Diesel Engine University of Science and Technology

Format:

Conference/Event

Author/Creator:

Lim, Lim, author.

Contributor:

Choi, Young

Park, Cheolwoong

Park, Junhyuk

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:

This paper has investigated the effects of High Pressure Loop (HPL) and Low Pressure Loop (LPL) Exhaust Gas Recirculation (EGR) gas mixture on combustion and emissions characteristics in a light-duty automotive diesel engine. This mixed supply strategy of dual-loop EGR is expected to be efficient for the reduction of NOxand smoke without the loss of turbocharger power. The results from the combined HPL and LPL EGR system were compared with those from only HPL EGR and only LPL EGR system respectively. Characteristics including temperature and mass flow rates of intake charge, air excess ratio, O₂ concentration in intake charge, difference in pressure between intake and exhaust, pumping loss, fuel consumption, CO, HC, NOx emissions, and smoke opacity were compared and analyzed at two operating conditions. Fuel consumption, NOx emission, and smoke were reduced with dual EGR mixture. However, CO and HC emission was little bit increased as a portion of LPL EGR increased at the same total EGR rate

Notes:

Vendor supplied data

Publisher Number:

2011-01-1831

Access Restriction:

Restricted for use by site license