车用汽油/喷气燃料混合油作为汽油机燃料的研究

摘要

综合利用实验室理化性能分析、发动机台架试验和实际行车试验等方式对车用汽油/喷气燃料混合油用作汽油应急替代燃料的可行性进行研究.结果表明,汽油中掺入喷气燃料后,挥发性下降,抗爆性变差.随着汽油中掺入喷气燃料比例的增加,发动机功率逐渐下降、油耗率逐渐上升,当喷气燃料体积分数为40％时,发动机功率下降5.3％～11.7％,油耗率平均增加3.8％,而且发动机油稀释加重,排放变差.因此,对于汽油机来说,混合油会对发动机产生一定的损害,只能作为应急替代燃料使用,而且喷气燃料的体积分数应低于40％.%A feasibility study of using mixed fuel of gasoline/jet fuel as emergency gasoline engine fuel was conducted.The properties and performance of the mixed fuel were evaluated by comprehensive approach including laboratory analysis,engine bench test and road test.Results show that by mixing jet fuel into gasoline,the volatility and anti-knock property of the mixed fuel decrease; with the increase of jet fuel mixing proportion,the power of gasoline engine reduces and the fuel consumption increases gradually.When the volume fraction of jet fuel reaches 40% in the mixed fuel, the engine power drops by 5.3%-11.7% and the fuel consumption increases by an average of 3.8% ,at the meantime engine oil dilution and exhaust emission become worse.Thus for gasoline engine, the mixed fuel of gasoline/jet fuel could only be used as an emergency alternative fuel and with a volume fraction of jet fuel less than 40%, since it may be harmful to the engine.