Research of Low Explosion Pressure and Low Fuel Consumption for Double-Wall-Jet Combustion System of DI Engine

DOI

10.2991/gmee-15.2015.49How to use a DOI?

Keywords

heat release rate; double-wall-jet; diesel;Nox; indicated thermal efficiency

Abstract

According to the spray characteristics and formation mechanism of NOx and soot of DI engine, a double-wall-jet combustion system of low compression ratio is designed and related experimental research is carried out. The results show that: The instantaneous heat release rate of double-wall-jet combustion system shows a trend of single peak. When the compression ratio is reduced, the starting point of combustion is postponed for about 2~3 ºCA, which makes the cylinder pressure greatly reduced, the cylinder combustion temperature and NOx emissions reduced ensuring the dynamic performance of the engine. The fuel consumption rate characteristics is analyzed according to the cumulative heat release rate, the percentage of total heat release, the single peak heat release rate and the indicated thermal efficiency, it shows that the fuel consumption rate is at a very low level. To reflect the advantages of the double-wall-jet combustion system, the combustion phase of the double-wall-jet engine is consistent with that of the original one, the fuel supply time is postponed for 2ºCA. The fuel consumption rate of the double-wall-jet engine is equivalence to that of the original one, the peak cylinder pressure and emissions of NOx is lower.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Pengjiang Guo
AU  - Xiyan Gao
PY  - 2015/12
DA  - 2015/12
TI  - Research of Low Explosion Pressure and Low Fuel Consumption for Double-Wall-Jet Combustion System of DI Engine
BT  - Proceedings of the 2nd International Conference on Green Materials and Environmental Engineering
PB  - Atlantis Press
SP  - 188
EP  - 193
SN  - 2352-5401
UR  - https://doi.org/10.2991/gmee-15.2015.49
DO  - 10.2991/gmee-15.2015.49
ID  - Guo2015/12
ER  -