Experimental study the effect of injection strategies on combustion and emission characteristics in gasoline compression ignition engines using gasoline/hydrogenated catalytic biodiesel blends

FUEL

卷:278

Article

Zhong, Wenjun^1,3  Pachiannan, Tamilselvan¹  Liu, Qing¹  Li, Zilong³  Qian, Yong³  Zhang, Yanzhi²  He, Zhixia^1,2  Lu, Xingcai³ 

[1] Jiangsu Univ, Sch Energy & Power Engn, Zhenjiang 212013, Jiangsu, Peoples R China

[2] Jiangsu Univ, Key Lab Zhenjiang, Inst Energy Res, Zhenjiang 212013, Jiangsu, Peoples R China

[3] Shanghai Jiao Tong Univ, Key Lab Power Machinery & Engn MOE, Shanghai 200240, Peoples R China

关键词: Gasoline compression ignition;    Hydrogenated catalytic biodiesel;    Injection strategy;    Combustion;    Emissions;   

DOI  :  10.1016/j.fuel.2020.118156

来源: Elsevier

【 摘 要 】

A new type of fuel named hydrogenated catalytic biodiesel blended with gasoline is proposed to apply in a gasoline compression ignition engine for low-temperature combustion. However, the higher maximum pressure rise rate and retarded combustion phasing under high loads of single injection mode are the main problems. Hence, the double injection strategy is proposed to solve the above problems and to find the optimal injection conditions for this tested fuel. The combustion and emission characteristics are tested at high load by varying different pilot injection ratio from 20 to 30% and pilot injection timing from -60 to -40 degrees CA aTDC for this test fuel. The results show that increasing pilot injection ratio can advance the combustion phasing, while it increases the maximum pressure rise rate. -50 degrees CA aTDC of pilot start of injection timing has advanced combustion phasing and higher maximum pressure rise rate than that of -40 and -60 degrees CA aTDC conditions. Moreover, the NOx emission is mainly effect by pilot ratio, while PM, THC and CO emissions are controlled by pilot start of injection timing. 30% of pilot ratio with -50 degrees CA aTDC of pilot start of injection timing is an optimal injection strategy for G80H20 and G70H30 blends considering combustion and emission characteristics.

【 授权许可】

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