Experimental Study on the Combustion Characteristics of the Engine Fueled with DME-Diesel Blends
LI Wei
WANG Kongbo
WANG Youming
NAN Xu
Abstract：To further study the performance of the engine fueled with DME-diesel blends,the indicator diagrams of a two-cylinder four-stroke engine are recorded at 1 700 r/min and 2 300 r/min under different load,the heat release rate and the rate of pressure rise are calculated.T he results show that:w hen fueled the engine with D20 blend(Mass ratio of DME and diesel oil is 2:8)and optimizing the fuel supply ad-vance angle,the maximum cylinder pressure decreases by 10% averagely and its corresponding crank angle delays 2°CA,the maximum rate of pressure rise is relatively lowers about 20%,the beginning of heat re-lease delays,but combustion duration do not extend,and the centroid of heat release curves is closer to TDC(Top Dead Center),maximum combustion temperature drops 80-100 K.
Keywords：dieselDM Eblendscombustion characteristics
Publication Date：2018-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 83-87 )