A Numerical Study on the Pilot Injection Conditions of a Marine 2-Stroke Lean-Burn Dual Fuel Engine

Guo, H.; Zhou, S.; Zou, J.; Shreka, M. (2020). A Numerical Study on the Pilot Injection Conditions of a Marine 2-Stroke Lean-Burn Dual Fuel Engine. Processes, 8(11), 1396.https://doi.org/10.3390/pr8111396

@article{Guo-2020-3905,
author = {Guo, H and Zhou, S and Zou, J and Shreka, M},
title = {A Numerical Study on the Pilot Injection Conditions of a Marine 2-Stroke Lean-Burn Dual Fuel Engine},
journal = {Processes},
year = {2020},
month = {nov},
publisher = {MDPI},
volume = {8},
number = {11},
pages = {1396},
doi = {10.3390/pr8111396},
url = {https://www.mdpi.com/2227-9717/8/11/1396},
keywords = {Methane (Natural Gas), Unspecified Pathway, Engine Testing and Performance, Lifecycle Assessment (LCA) and Air Emissions, Ocean-going Vessels},
}

TY - JOUR
TI - A Numerical Study on the Pilot Injection Conditions of a Marine 2-Stroke Lean-Burn Dual Fuel Engine
AU - Guo, H
AU - Zhou, S
AU - Zou, J
AU - Shreka, M
T2 - Processes
AB - The global demand for clean fuels is increasing in order to meet the requirements of the International Maritime Organization (IMO) of 0.5% global Sulphur cap and Tier III emission limits. Natural gas has begun to be popularized on liquefied natural gas (LNG) ships because of its low cost and environment friendly. In large-bore marine engines, ignition with pilot fuel in the prechamber is a good way to reduce combustion variability and extend the lean-burn limit. However, the occurrence of knock limits the increase in power. Therefore, this paper investigates the effect of pilot fuel injection conditions on performance and knocking of a marine 2-stroke low-pressure dual-fuel (LP-DF) engine. The engine simulations were performed under different pilot fuel parameters. The results showed that the average in-cylinder temperature, the average in-cylinder pressure, and the NOx emissions gradually decreased with the delay of the pilot injection timing. Furthermore, the combustion situation gradually deteriorated as the pilot injection duration increased. A shorter pilot injection duration was beneficial to reduce NOx pollutant emissions. Moreover, the number of pilot injector orifices affected the ignition of pilot fuel and the flame propagation speed inside the combustion chamber.
DA - 2020/11//
PY - 2020
PB - MDPI
VL - 8
IS - 11
SP - 1396
UR - https://www.mdpi.com/2227-9717/8/11/1396
DO - 10.3390/pr8111396
LA - English
KW - Methane (Natural Gas)
KW - Unspecified Pathway
KW - Engine Testing and Performance
KW - Lifecycle Assessment (LCA) and Air Emissions
KW - Ocean-going Vessels
ER -