不同气压下燃用混合燃料对柴油机性能的影响  

The Influence of Mixed Fuel on Diesel Engine Performance under Different Pressures

作　　者：陆修进 张昆[1] 颜文胜[1] 习文辉 

机构地区：[1]昆明理工大学交通工程学院,云南昆明650500

出　　处：《小型内燃机与车辆技术》2014年第6期7-12,共6页Small Internal Combustion Engine and Vehicle Technique

基　　金：校人才培养基金(KKZ320130200)资助项目

摘　　要：为了研究不同气压下B50混合燃料对柴油机性能的影响,对B50与B0燃料,在不同气压下做了台架试验,对燃烧特性、负荷特性、外特性等的试验进行对比分析。分析结果表明：相同气压下与燃用B0相比,燃用B50的输出扭矩、爆发压力、压升率和放热率等降低但峰值提前,其输出扭矩降低5%-7.06%,比油耗升高4.7%-6.9%;HC、CO和烟度分别下降31.4%、23.7%和27%,NOx排放升高8.7%。大气压力升高后燃用B0输出扭矩约升高19.5%,比油耗约降低7.5%;燃用B50输出扭矩约升高15.7%,比油耗约降低5.5%,在低速下尤为明显。结果表明B50的燃用性能不是太理想。In order to study the main effect of different pressure of B50 mixed fuel for diesel engine performance,bench test for B50 and B0 was carried out under different pressures. Then the combustion characteristics,load characteristics and external characteristics experiment are analyzed. Analysis results show that compared with B0 under the same pressure,the output torque, explosion pressure,rate of pressure rise and rate of heat release of B50 decreased,but the peak was in advance, while a reduction of5%-7.06% for the output torque, an increase of 4.7%-6.9% for the rate of fuel consumption occurred;the emissions of HC, CO and smoke emission decreased by 31.4%,23.7% and 27% respectively,while the emission of NOxincreased by 8.7%. When the atmospheric pressure increased,an increase about 19.5% for the output torque of B0,an increase about 7.5% for rate of feul consumption of B0,an increase about15.7% for the output torque of B50,and an increase about 5.5% for rate of feul consumption of B50 occured,especially in the low speed. It is shown that the B50 combustion performance is not too ideal.

关 键 词：B50 大气压力 生物柴油 柴油机 燃烧特性 

分 类 号：TK464[动力工程及工程热物理—动力机械及工程]