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Exhaust emissions and fuel consumption of a triple-fuel spark-ignition engine powered passenger car

机译:三燃料火花点火发动机动力乘用车的废气排放和燃料消耗

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摘要

This paper examines the influence of compressed natural gas, liquefied petroleum gas and gasoline fuel on the exhaust emissions and the fuel consumption of a spark-ignition engine powered passenger car. The vehicle was driven according to the urban driving cycle and extra urban driving cycle speed profiles with the warmed-up engine. Cause and effect based analysis reveals potential for using different fuels to reduce vehicle emission and deficiencies associated with particular fuels. The highest tank to wheel efficiency and the lowest CO_2 emission are observed with the natural gas fuelled vehicle, that also featured the highest total hydrocarbon emissions and high NO_x emissions because of fast three way catalytic converter aging due the use of the compressed natural gas. Retrofitted liquefied petroleum gas fuel supply systems feature the greatest air-fuel ratio variations that result in the lowest TtW efficiency and in the highest NO_x emissions of the liquefied gas fuelled vehicle.
机译:本文研究了压缩天然气,液化石油气和汽油燃料对以火花点火发动机为动力的乘用车的废气排放和燃料消耗的影响。车辆根据预热引擎的城市行驶周期和额外的城市行驶周期速度曲线行驶。基于因果的分析揭示了使用不同燃料减少车辆排放和与特定燃料相关的缺陷的潜力。使用天然气燃料的车辆观察到最高的轮对效率和最低的CO_2排放,由于使用压缩天然气,三元催化转化器快速老化,因此其总碳氢化合物排放量最高,NO_x排放量最高。改装的液化石油气燃料供应系统具有最大的空燃比变化,从而导致液化气燃料汽车的最低TtW效率和最高的NO_x排放量。

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