Based on the homogeneous charge induced ignition combustion mode, a dual-fuel partially premixed combustion strategy with gasoline injection in the intake port and diesel direct injection in two sections of the cylinder was adopted, and the effects of injection ratios on the combustion and emissions of gasolinediesel dual-fuel engine under different loads were investigated on an automotive high-pressure common-rail supercharged diesel engine. The results show that the pressure and temperature in the cylinder decrease and the combustion deteriorates with the increase of injection ratio under the small load. A higher injection ratio under medium and high loads can improve the combustion process in the cylinder, and slightly improve the power and economy. Under the test load, NOx emissions reduce with the increase of injection ratio. Dual-fuel engines have better particulate emission charateristics than the original engine, and the effect is more pronounced as the injection ratio increases.
DUAN Jiaquan
,
LIANG Zhendong
,
HAN linghai
,
GONG Yanfeng
,
XIE Fangxi
,
LI Xiaoping
. Effects of Injection Ratio on Combustion and Particulate Emission -Characteristics of Gasoline/Diesel Dual-Fuel Compression Ignition Engine[J]. Vehicle Engine, 2023
, 0(6)
: 39
-46
.
DOI: 1001-2222.2023.06.006
