Parametric investigation of natural gas port injection and diesel pilot injection on the combustion and emissions of a turbocharged common rail dual-fuel engine at low load

Parametric investigation of natural gas port injection and diesel pilot injection on the combustion and emissions of a turbocharged common rail dual-fuel engine at low load

Type	Journal Article
Author	Bo Yang
Author	Chengxun Xi
URL	http://www.sciencedirect.com/science/article/pii/S0306261915000434
Volume	143
Pages	130-137
Publication	Applied Energy
Date	April 1, 2015
Abstract	Researchers modified a common rail diesel research engine to operate in dual-fuel mode. They studied the effects of natural gas injection timing on the combustion and emissions performance under different pilot injection pressure and timing at low load conditions. Results suggested that retarded natural gas injection timing can achieve a stratified-like air–fuel mixture in cylinder under the varying pilot injection conditions, providing a method to improve the combustion performance and exhaust emissions at low load. Consequently, employing appropriate natural gas injection timing accompanied with reasonable pilot injection parameters is critical to further improve combustion performance and exhaust emissions of a dual-fuel engine at low loads.