Optimizing the Injection Pressure for Cluster Nozzle Concepts in DI Diesel Engines
H. Won, and N. Peters. International Journal of Engine Research, 11 (2):
163-174(2010)
Abstract
A combination of high-pressure injection and small orifices will be one of the strategies to achieve lean combustion. However, equispaced small orifices tend to increase soot under high-load condition because the spray tip penetration becomes exceedingly inadequate. For this reason, the cluster concept was chosen as a means to realize lean combustion. Six clusters were investigated with different injection pressures under part-load condition and high-load condition in a single-cylinder diesel engine, and the results were compared with a reference nozzle. The clusters tend to produce higher smoke than the reference nozzle for low injection pressures under conventional injection timing because the spray from the clusters with a shorter spray tip penetration loses momentum near the piston bowl. However, the clusters show improved smoke emissions with higher injection pressures. The combination of high-pressure injection and cluster concepts can be seen as one of the solutions to achieve lean combustion for diesel engines. Clusters with high-pressure injection have improved emissions, as better fuel atomization and evaporation are achieved while holding momentum near the piston bowl and maintaining the penetration of the spray.
%0 Journal Article
%1 won2010optimizing
%A Won, Hyun Woo
%A Peters, Norbert
%D 2010
%J International Journal of Engine Research
%K prev
%N 2
%P 163-174
%T Optimizing the Injection Pressure for Cluster Nozzle Concepts in DI Diesel Engines
%V 11
%X A combination of high-pressure injection and small orifices will be one of the strategies to achieve lean combustion. However, equispaced small orifices tend to increase soot under high-load condition because the spray tip penetration becomes exceedingly inadequate. For this reason, the cluster concept was chosen as a means to realize lean combustion. Six clusters were investigated with different injection pressures under part-load condition and high-load condition in a single-cylinder diesel engine, and the results were compared with a reference nozzle. The clusters tend to produce higher smoke than the reference nozzle for low injection pressures under conventional injection timing because the spray from the clusters with a shorter spray tip penetration loses momentum near the piston bowl. However, the clusters show improved smoke emissions with higher injection pressures. The combination of high-pressure injection and cluster concepts can be seen as one of the solutions to achieve lean combustion for diesel engines. Clusters with high-pressure injection have improved emissions, as better fuel atomization and evaporation are achieved while holding momentum near the piston bowl and maintaining the penetration of the spray.
@article{won2010optimizing,
abstract = {A combination of high-pressure injection and small orifices will be one of the strategies to achieve lean combustion. However, equispaced small orifices tend to increase soot under high-load condition because the spray tip penetration becomes exceedingly inadequate. For this reason, the cluster concept was chosen as a means to realize lean combustion. Six clusters were investigated with different injection pressures under part-load condition and high-load condition in a single-cylinder diesel engine, and the results were compared with a reference nozzle. The clusters tend to produce higher smoke than the reference nozzle for low injection pressures under conventional injection timing because the spray from the clusters with a shorter spray tip penetration loses momentum near the piston bowl. However, the clusters show improved smoke emissions with higher injection pressures. The combination of high-pressure injection and cluster concepts can be seen as one of the solutions to achieve lean combustion for diesel engines. Clusters with high-pressure injection have improved emissions, as better fuel atomization and evaporation are achieved while holding momentum near the piston bowl and maintaining the penetration of the spray. },
added-at = {2013-03-21T15:13:41.000+0100},
author = {Won, Hyun Woo and Peters, Norbert},
biburl = {https://www.bibsonomy.org/bibtex/20c222315314cdf02ebad05960a2bb069/itv},
interhash = {6f968300168fd2e0638e19a8966337a1},
intrahash = {0c222315314cdf02ebad05960a2bb069},
journal = {International Journal of Engine Research},
keywords = {prev},
number = 2,
pages = {163-174},
timestamp = {2014-07-31T07:46:38.000+0200},
title = {Optimizing the Injection Pressure for Cluster Nozzle Concepts in DI Diesel Engines},
volume = 11,
year = 2010
}