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Effects of Injection Timing and Injection Volume on the Combustion and Emissions of a Two-Stroke Kerosene Direct Injection Engine

Authors :
Taixue Bei
Bo Lu
Rui Liu
Junhui Huang
Bing Zhang
Source :
Processes; Volume 10; Issue 9; Pages: 1728
Publication Year :
2022
Publisher :
MDPI AG, 2022.

Abstract

To study the influence of injection time and injection volume on the working process of a two-stroke kerosene direct injection engine, an experimental study was carried out on an improved two-stroke inline three-cylinder gasoline engine, combined with calculations and analysis with GT-POWER and AVL FIRE software. The results showed that when the injection end angle increased from 50° to 70° before the top dead center (BTDC), the average pressure and temperature in the cylinder increased rapidly, the peak value of pressure and temperature and the cumulative heat release increased, and the combustion process in the cylinder was more sufficient. The fuel injection volume was set to 7.5 mg, 8 mg, and 8.5 mg. With increasing fuel injection volume, the average pressure and average temperature first increased and then decreased, the peak value gradually increased, the heat release rate and cumulative heat release increased sharply, the corresponding time gradually advanced, and the peak value gradually increased. With increasing fuel injection volume, CO, NO, and soot gradually increased, while CO2 slightly decreased.

Details

ISSN :
22279717
Volume :
10
Database :
OpenAIRE
Journal :
Processes
Accession number :
edsair.doi.dedup.....487fc37f19ba10223ad4e5648515663b
Full Text :
https://doi.org/10.3390/pr10091728