添加剂对汽油机油耗及排放影响的试验研究  

Experimental Study on the Effect of Fuel Additives on Gasoline Engine Fuel Consumption and Emissions

作　　者：张擘[1] 纪常伟[1] 汪硕峰[1] 方泽军[1] 闫皓[1] 刘洋[1] 

机构地区：[1]北京工业大学环境与能源工程学院,北京100022

出　　处：《内燃机工程》2010年第4期49-53,共5页Chinese Internal Combustion Engine Engineering

基　　金：北京市自然科学基金项目(3082004);北京市教育委员会科研基地建设项目

摘　　要：针对汽油机热效率较低的问题,将两种汽油添加剂M1、M2分别以体积分数1‰和2‰添加到汽油中,在发动机试验台架上考察了两种添加剂对发动机油耗率、缸压、瞬时已燃燃料质量分数(MFB)和排放的影响。试验结果表明:加入添加剂后发动机平均油耗率比原机有所降低,加入1‰体积分数M1后发动机平均节油率达到3.41%。添加剂M1的节油效果比M2明显,但当添加量大于2‰时,发动机在高负荷出现爆震。加入该添加剂后发动机缸压峰值升高,缸压和MFB峰值所对应的发动机曲轴转角提前。同时,加入两种添加剂能够改善发动机在中低负荷阶段的HC、CO排放,但NOx排放比原机有所增加。In view of low thermal efficiency of IC engines, two additives, M1 and M2 were added to the gasoline at the volume fractions of 1‰ and 2‰ respectively. The effects of the additives on engine brake specific fuel consumption （BSFC）, cylinder pressure, instantaneous mass fraction burned （MFB） and emissions were investigated on the test bench. The experimental results indicate that the average BSFC is reduced with the additives adding to the fuel, the BSFC is reduced by 3.41% when adding 1%o M1. The M1 gives more BSFC reduction compared with the M2. But the engine is subject to knocking in high load range when adding M1 more than 2 %0. The peak cylinder pressure rises and the timing of the peak cylinder pressure and the maximum instantaneous MFB advance using Ml-added fuel than using the base fuel. While adding both M1 and M2,the CO and HC emissions reduce in low and mid load range, but NOx emission slightly rises.

关 键 词：内燃机 添加剂 汽油机 缸压 油耗率 排放 

分 类 号：TK418[动力工程及工程热物理—动力机械及工程]