An experimental study on the effects of high-pressure and multiple injection strategies on DI diesel engine emissions

Handle URI:
http://hdl.handle.net/10754/577101
Title:
An experimental study on the effects of high-pressure and multiple injection strategies on DI diesel engine emissions
Authors:
Yang, Seung Yeon ( 0000-0003-4512-8713 ) ; Chung, Suk-Ho ( 0000-0001-8782-312X )
Abstract:
An experimental study on effects of high-pressure injections in conjunction with split fuel injections were conducted on an AVL single cylinder DI diesel engine. Various injection schemes were studied through the use of an electronically controlled, common rail injection system capable of injection pressures up to 200 MPa and a maximum of six injections per combustion event. Up to 100 MPa of the fuel injection pressure, the higher injection pressures create faster combustion rates that result in the higher in-cylinder gas temperatures as compared to conventional low-pressure fuel injection systems. When applying high-pressure injections, particulate emission reductions of up to 50% were observed with no change in hydrocarbon emissions, reductions of CO emissions and only slightly higher NOx emissions. Over 100 MPa, on the other hand, the higher injection pressures still reduced up to almost zero-level of particulate emission, at the same time that the NO emission is reduced greatly. Under these high-pressure injection conditions, strong correlations between soot and CO emissions were observed, which compete for the oxidizing OH species. Multiple or split high-pressure injections also investigated as a means to decrease particulate emissions. As a result, a four-split injection strategy resulted in a 55% reduction in particulates and with little or no penalty on NOx emissions. The high pressure split injection strategy with EGR was more effective in reducing particulate and CO emissions simultaneously. Copyright © 2013 SAE International and Copyright © 2013 TSAE.
KAUST Department:
Physical Sciences and Engineering (PSE) Division; Mechanical Engineering Program; Clean Combustion Research Center
Publisher:
SAE International
Journal:
SAE Technical Paper Series
Conference/Event name:
17th Asia Pacific Automotive Engineering Conference, APAC 2013
Issue Date:
25-Mar-2013
DOI:
10.4271/2013-01-0045
Type:
Conference Paper
Appears in Collections:
Conference Papers; Physical Sciences and Engineering (PSE) Division; Mechanical Engineering Program; Clean Combustion Research Center

Full metadata record

DC FieldValue Language
dc.contributor.authorYang, Seung Yeonen
dc.contributor.authorChung, Suk-Hoen
dc.date.accessioned2015-09-10T14:18:10Zen
dc.date.available2015-09-10T14:18:10Zen
dc.date.issued2013-03-25en
dc.identifier.doi10.4271/2013-01-0045en
dc.identifier.urihttp://hdl.handle.net/10754/577101en
dc.description.abstractAn experimental study on effects of high-pressure injections in conjunction with split fuel injections were conducted on an AVL single cylinder DI diesel engine. Various injection schemes were studied through the use of an electronically controlled, common rail injection system capable of injection pressures up to 200 MPa and a maximum of six injections per combustion event. Up to 100 MPa of the fuel injection pressure, the higher injection pressures create faster combustion rates that result in the higher in-cylinder gas temperatures as compared to conventional low-pressure fuel injection systems. When applying high-pressure injections, particulate emission reductions of up to 50% were observed with no change in hydrocarbon emissions, reductions of CO emissions and only slightly higher NOx emissions. Over 100 MPa, on the other hand, the higher injection pressures still reduced up to almost zero-level of particulate emission, at the same time that the NO emission is reduced greatly. Under these high-pressure injection conditions, strong correlations between soot and CO emissions were observed, which compete for the oxidizing OH species. Multiple or split high-pressure injections also investigated as a means to decrease particulate emissions. As a result, a four-split injection strategy resulted in a 55% reduction in particulates and with little or no penalty on NOx emissions. The high pressure split injection strategy with EGR was more effective in reducing particulate and CO emissions simultaneously. Copyright © 2013 SAE International and Copyright © 2013 TSAE.en
dc.publisherSAE Internationalen
dc.titleAn experimental study on the effects of high-pressure and multiple injection strategies on DI diesel engine emissionsen
dc.typeConference Paperen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentMechanical Engineering Programen
dc.contributor.departmentClean Combustion Research Centeren
dc.identifier.journalSAE Technical Paper Seriesen
dc.conference.date1 April 2013 through 3 April 2013en
dc.conference.name17th Asia Pacific Automotive Engineering Conference, APAC 2013en
dc.conference.locationBangkoken
kaust.authorYang, Seung Yeonen
kaust.authorChung, Suk-Hoen
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