共查询到19条相似文献,搜索用时 125 毫秒
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张翠平 《小型内燃机与摩托车》2000,29(2)
本文从液化石油气 (LPG)的理化特性和燃烧特点出发 ,阐述了LPG作为发动机燃料的优缺点。介绍了HH4 6 5Q汽油机双燃料 (汽油和LPG)供给系统 ,通过对两者排放性能和动力性能分析 ,展示了液化石油气的应用前景 相似文献
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液化石油气应用于汽油机的试验研究 总被引:2,自引:0,他引:2
主要介绍国内外液化石油气应用于内燃机的状况及液化石油气发动机的优点,并对液化气发动机的动力性能进行了实际试验分析,表明汽油机改装为液化气、汽油两用发动机,能够保持原机性能,不会影响实际应用。 相似文献
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汽油和液化石油气双燃料供给系统的开发 总被引:2,自引:0,他引:2
本文从液化石油气(LPG)的理化特性和燃烧特点出发,阐述了LPG作为发动机燃料的优缺点。介绍了HH465Q汽油机双燃料(汽油和LPG)供给系统,通过对两者排放性能和动力性能分析,展示了液化石油气的应用前景。 相似文献
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DME-LPG混合燃料的试验研究 总被引:1,自引:0,他引:1
通过在火花点火式发动机燃用二甲醚混合燃料与汽油的对比试验,评价了二甲醚混合燃料的不同组份在发动机上的应用特性,分析了由二甲醚、液化石油气和甲醇组成的两种配比混合燃料的经济性能、动力性能及怠速时的排放性能。结果表明,发动机燃用二甲醚—液化石油气混合燃料基本达到了燃用汽油的水平。 相似文献
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通过对发动机燃用液化石油气和汽油排放特性的对比分析,可知,汽车以液化石油气为燃料比以汽油为燃料时,不但可以减少有害气体的排放量,而且还可以降低发动机噪声。 相似文献
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择 《小型内燃机与摩托车》1975,(2)
1.用液化石油气驱动汽油机 1.混合比发动机使用汽油运转时,理论混合比为14.7,该值是实验值.汽油是许多碳氢化合物的混合物,燃烧不能用化学方程式表示. 与此相反,使用液化石油气时,则成立化学方程式,所以可用化学方程式求出理论混合比. 相似文献
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《International Journal of Hydrogen Energy》2020,45(60):35257-35268
Demand for fossil fuels is increasing day by day with the increase in industrialization and energy demand in the world. For this reason, many countries are looking for alternative energy sources against this increasing energy demand. Hydrogen is an alternative fuel with high efficiency and superior properties. The development of hydrogen-powered vehicles in the transport sector is expected to reduce fuel consumption and air pollution from exhaust emissions. In this study, the use of hydrogen as a fuel in vehicles and the current experimental studies in the literature are examined and the results of using hydrogen as an additional fuel are investigated. The effects of hydrogen usage on engine performance and exhaust emissions as an additional fuel to internal combustion gasoline, diesel and LPG engines are explained. Depending on the amount of hydrogen added to the fuel system, the engine power and torque are increased at most on petrol engines, while they are decreased on LPG and diesel engines. In terms of chemical products, the emissions of harmful exhaust gases in gasoline and LPG engines are reduced, while some diesel engines increase nitrogen oxide levels. In addition, it is understood that there will be a positive effect on the environment, due to hydrogen usage in all engine types. 相似文献
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对490Q直喷式柴油机进行了LPG/柴油双燃料的技术改造。在分别燃用纯柴油和柴油/LPG双燃料的情况下,研究了相应工况下发动机的动力性、经济性以及排放特性等性能。试验结果表明,加入一定比例的LPG可改变缸内燃烧过程,大幅度降低排气烟度,在一定程度上提高了燃油经济性。 相似文献
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《Energy Conversion and Management》2005,46(13-14):2317-2333
A quasi-dimensional spark ignition (SI) engine cycle model is used to predict the cycle, performance and exhaust emissions of an automotive engine for the cases of using gasoline and LPG. Governing equations of the mathematical model mainly consist of first order ordinary differential equations derived for cylinder pressure and temperature. Combustion is simulated as a turbulent flame propagation process and during this process, two different thermodynamic regions consisting of unburned gases and burned gases that are separated by the flame front are considered. A computer code for the cycle model has been prepared to perform numerical calculations over a range of engine speeds and fuel–air equivalence ratios. In the computations performed at different engine speeds, the same fuel–air equivalence ratios are selected for each fuel to make realistic comparisons from the fuel economy and fuel consumption points of view. Comparisons show that if LPG fueled SI engines are operated at the same conditions with those of gasoline fueled SI engines, significant improvements in exhaust emissions can be achieved. However, variations in various engine performance parameters and the effects on the engine structural elements are not promising. 相似文献
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柴油/LPG双燃料发动机工作性能的实验研究 总被引:4,自引:0,他引:4
由6110A柴油机改装的柴油/LPG双燃料发动机,在燃用LPG/柴油双燃料和纯柴油两种情况下,进行了相应工况点的对比试验,得出了有关双燃料发动机的动力性,经济性和排放等工作性能的结论。 相似文献
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小型点燃式发动机应用LPG的微粒排放特性 总被引:2,自引:0,他引:2
介绍了液化石油气(LPG)在点燃式发动机上应用时微粒排放特性的试验研究.试验在一台四行程、水冷125mL单缸电喷式发动机上进行.结果表明,LPG在点燃式发动机上应用时也有大量的微粒排放,但其排放的总颗粒数与使用汽油燃料时基本相同.LPG燃料排放的微粒在粒度分布上有双峰分布的特点,但有时第1个峰的特征不明显,第2个峰对应的粒径大小同汽油机基本相同,发动机中等负荷时的微粒排放量最大,浓混合气的微粒排放量高,微粒的粒数浓度在中等转速时最大。 相似文献