电喷汽油机燃用大比例含水乙醇汽油的试验

Experiments of the EFI engine fueled with blends of high proportion aquiferous ethanol and gasoline

在一台JL368Q双燃料多点电喷发动机上进行台架试验,对比分析了3种含水乙醇汽油(E15W、E30W、E50W)的动力性、经济性和排放特性。结果表明:在汽油机结构及参数未做任何调整下,低速时,含水乙醇汽油的转距、功率和93#汽油基本相当,随着转速增大,E15W、E50W略低于93#汽油,E30W仍和汽油基本相当;油耗率E15W比汽油低大约0.35%,随着含醇量的增大,油耗率逐渐升高;3种乙醇汽油的NOx排放均略高于93#汽油,但CO的排放都低于93#汽油,E30W的CO排放在整个测试区间最优。随着含醇量的增加,HC排放能得到不断的改善。

Engine power performance of fuel economy and emission characteristics with a JL368Q engine run on ethanol/ gasoline blends was experimentally investigated. The results show that with the same structure and parameter of the engine, at the low speed, the power output or torque of blended fuels are almost similar to that of 93 # gasoline. But with the speed increasing, the E15W and E50W power outputs are lower than that of 93# gasoline while E30W remains the same. The brake specific fuel consumption of E15W is lower than that of gasoline about 0.35%. With the increase of ethanol volume fraction in the blended fuel, the specific fuel consumption increases gradually. When fueled with ethanol/ gasoline blends, the engine NOx emission increases and CO emission decreases. E30W gives the lowest CO emission in this test. With the increase of ethanol volume fraction, HC can be improved gradually.