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首页> 外文期刊>Transaction of the Hongkong Institute of Engineers >Experimental Investigation of Using Ethanol-gasoline in Electronic Control Gasoline-injection Engine
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Experimental Investigation of Using Ethanol-gasoline in Electronic Control Gasoline-injection Engine

机译：乙醇汽油用于电控汽油喷射发动机的实验研究

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摘要

This paper investigates the effect of ethanol-gasoline blended fuel on engine performance and exhaust emission. A four-stroke, four-cylinder SI engine with an electronic fuel injection (EFI) system is used for this study. The fuel properties of blended fuel are examined and the results show that blended fuel has a high octane number and high Reid vapor pressure. Performance tests are conducted for brake power, engine torque and brake specific fuel consumption, using two test fuels at different throttle opening position and variable engine speed ranging from idle speed to maximum speed. The results show that engine power output and torque decreases at partial load and they give no reduction at full load operating condition if blended fuel is used. The brake specific fuel consumption increases by 5 - 10%, but the brake specific energy consumption improves and region of fuel economy of ethanol-gasoline fueled engine becomes narrow. The exhaust emissions are also analysed for carbon monoxide (CO), nitric oxides (NO{sub}x) and unburned hydrocarbons at idle speed. The CO, HC and NO{sub}x emission concentrations decrease. The performance of ethanol-gasoline is pertinent to the air/fuel ratio control strategy.
机译：本文研究了乙醇汽油混合燃料对发动机性能和废气排放的影响。这项研究使用的是带有电子燃油喷射（EFI）系统的四冲程，四缸SI发动机。检查了混合燃料的燃料特性，结果表明混合燃料具有高辛烷值和高里德蒸气压。使用两种测试燃料在不同的节气门打开位置和可变的发动机速度（从怠速到最大速度）之间进行了制动功率，发动机扭矩和制动器特定油耗的性能测试。结果表明，如果使用混合燃料，则发动机的功率输出和扭矩在部分负荷下会降低，并且在满负荷运行条件下不会降低。制动器的单位燃料消耗增加了5-10％，但是制动器的单位能耗得到改善，乙醇汽油发动机的燃料经济性范围变窄。还分析了废气在怠速时的一氧化碳（CO），一氧化氮（NO {sub} x）和未燃烧的碳氢化合物。 CO，HC和NO {x} x排放浓度降低。乙醇汽油的性能与空燃比控制策略有关。

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