Effect of Optimizing of the Start of Injection Timing for Improving NOx/PM Trade-Off in DI Diesel Engine Fueled with Rapeseed Methyl Ester University of ORLEANS -PRISME LABORATORY

Format:

Book

Conference/Event

Author/Creator:

HAMMOUDI, Mounia, author.

Contributor:

Chamaillard, Yann

Nelson Gruel, Dominique

Conference Name:

SAE Powertrains, Fuels & Lubricants Meeting (2020-09-22 : Krakow, Poland)

Language:

English

Physical Description:

1 online resource cm

Place of Publication:

Warrendale, PA SAE International 2020

Summary:

Pollutant emissions are a major issue from all existing internal combustion engines, especially from diesel engines, with oxides of nitrogen (NOx) and particulate matter (PM) receiving particular attention. Simultaneous reduction of NOx and PM often presents a challenge to diesel engine researchers because of the inherent trade-off between them due to their contradictory responses to oxygen content in a fuel. The use of liquid or gaseous biofuels in internal combustion engines, benefits in the reduction of life-cycle CO2 emissions, but suffer from unfavorable NOx-PM emissions trade-off. Hence, it is essential to moderate NOx-PM emissions trade-off in order to effectively use the biodiesel fuel as an alternative to the fossil diesel fuel in diesel engine. In this study, the trade-off relations among PM and NOx from a four cylinder, direct injection diesel engine fueled with fossil diesel, biodiesel and their blends, in conjunction with various start of fuel injection angles were investigated. It is known that when the oxygen content of the fuel increases, the PM density decreases while NOx emissions increase. But in the present study, we have proven that an improvement in NOx-PM trade-off can be achieved for all tested fuels by adjusting the start of injection timing. The optimization of fuel injection timing, minimizes the amount of NOx emitted and optimizes the density of PM produced. These results are corroborated by the use of a feedback law applied to control NOx emissions, from combustion of neat biodiesel (B100). By modifying the combustion process through optimizing start of injection timing, this controller has proven its efficiency to track the desired trajectory of NOx and reduce the density of PM produced

Notes:

Vendor supplied data

Publisher Number:

2020-01-2132

Access Restriction:

Restricted for use by site license