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Titolo:
The experimental investigations of recirculated exhaust gas on exhaust emissions in a diesel engine
Autore:
Kim, HM; Bae, MW; Park, JY;
Indirizzi:
INJE Univ, Sch Mech & Automot Engn, Kyungnam 621749, South Korea INJE Univ Kyungnam South Korea 621749 Engn, Kyungnam 621749, South Korea Gyeongsang Natl Univ, Sch Transport Vehicle Engn, Kyungnam 660701, South Korea Gyeongsang Natl Univ Kyungnam South Korea 660701 nam 660701, South Korea Kyungnam Univ, Div Elect & Elect Engn, Kyungnam 631701, South Korea Kyungnam Univ Kyungnam South Korea 631701 , Kyungnam 631701, South Korea
Titolo Testata:
KSME INTERNATIONAL JOURNAL
fascicolo: 11, volume: 15, anno: 2001,
pagine: 1588 - 1598
SICI:
1226-4865(200111)15:11<1588:TEIORE>2.0.ZU;2-Z
Fonte:
ISI
Lingua:
ENG
Keywords:
NOx and soot emissions; exhaust gas recirculation (EGR); scrubber EGR control system; diesel engine; intake and exhaust oxygen concentrations; equivalence ratio;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
26
Recensione:
Indirizzi per estratti:
Indirizzo: Kim, HM INJE Univ, Sch Mech & Automot Engn, Kyungnam 621749, South Korea INJE Univ Kyungnam South Korea 621749 ungnam 621749, South Korea
Citazione:
H.M. Kim et al., "The experimental investigations of recirculated exhaust gas on exhaust emissions in a diesel engine", KSME INT J, 15(11), 2001, pp. 1588-1598

Abstract

The effects of recirculated exhaust gas on the characteristics of NOx and soot emissions under a wide range of engine loads were experimentally investigated by using a four-cycle, four-cylinder, swirl chamber type, water-cooled diesel engine operating at three engine speeds. The purpose of this study was to develop the EGR-control system for reducing NOx and soot emissions simultaneously in diesel engines. The EGR system is used to reduce NOx emissions, and a novel diesel soot removal device with a cylinder-type scrubber for the experiment system was specially designed and manufactured to reduce soot contents in the recirculated exhaust gas to the intake system of the engine. The experiments were performed at the fixed fuel injection timing of 4 degrees ATDC regardless of experimental conditions. It was found that soot emissions in exhaust gases were reduced by 20 to 70% when the scrubber was applied in the range of the experimental conditions, and that NOx emissions decreased markedly, especially at higher loads, while soot emissions increased owing to the decrease in intake and exhaust oxygen concentrations, and the increase in equivalence ratio as the EGR rate is elevated.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/05/20 alle ore 18:06:28