共查询到18条相似文献,搜索用时 125 毫秒
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选用奥华液化石油气有限公司生产的汽车用石油气燃料供给装置配于EQ6100-Ⅰ型发动机进行性能测试分析。试验表明,在不改变原机压缩比和点火提前角时,燃用LPG的动力性下降了,最大功率为原机90%;最大扭矩为原机的92%。燃用LPG比燃用汽油的当量比油耗低,节能率在5%左右。 相似文献
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选用奥华液化石油气有限公司生产的汽车用石油气燃料供给装置配于EQ6100-I型发动机进行性能测试分析.试验表明,在不改变原机压缩比和点火提前角时,燃用LPG的动力性下降了,最大功率为原机90%;最大扭矩为原机的92%.燃用LPG比燃用汽油的当量比油耗低,节能率在5%左右. 相似文献
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汽油—液化石油气(LPG)两用燃料发动机的研究 总被引:7,自引:2,他引:5
介绍了汽油-液化石油气(LPG)两用燃料发动机空燃比的调节和作者研制成功的无混合器式双蒸发器LPG供气系统,该供气系统取消了LPG发动机惯用的混合器,在原机双腔化油器的主、副腔喉管处钻孔,接入LPG主供气系和LPG加浓系,从而取消了混合器,解决了全负荷时动力性与部分负荷时燃料经济性、排放之间的矛盾,取得了良好的效果。用该系统改装的汽油-LPG两用燃料发动机,在燃用汽油时性能无任何变化,燃用LPG时取得了动力性、燃料经济性和排放指标俱佳的效果。 相似文献
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492Q汽油机燃用液化石油气质NOx排放规律的试验研究 总被引:2,自引:1,他引:1
介绍了在492Q汽油机上燃用液化石油气(LPG)的台架试验结果,得到了其在中高转速下NOx排放同空燃比、负荷以及点火提前角等参数之间的关系,并将试验结果同汽油机进行了对比。试验结果表明,汽油发动机机在燃用LPG燃料时,NOx排放会有所增加,需要采取某些措施来加以抑制。 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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对Santana2000AJR型电控汽油机改装为IJPG/汽油两用燃料发动机进行了试验研究。结果表明:燃用LPG较燃用汽油,最大功率降低6%,最大扭矩降低12%。节能率最大可达9%,污染物排放中HC、NOx和CO最大降低分别为60.9%、70.6%和90%。通过分析比较,提出LPG发动机的改进方法。 相似文献
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LPG多点连续电喷发动机及车辆的排放试验研究 总被引:5,自引:0,他引:5
论述了电控LPG多点连续喷射系统。该系统不但可以提高发动机的动力性和经济性,降低排放,而且可以从结构和原理上避免进气管“回火”的发生。通过试验分析了空燃比和点火提前角对CO,HC和NOx三种排放物的影响趋势。并从三种有害气体排放物的生成机理上分析了产生的原因及变化的规律;通过试验比较了发动机在不同转速下燃用汽油和LPG时的排放,分析了燃用LPG燃料排放降低的原因;最后用工况法试验循环(ECE EUDC)进行了车辆运行的怠速、加速、减速及等速等不同工况下的试验,并分析了不同工况下的排放结果。在不影响发动机的动力性及经济性的前提下,有害气体的排放量达到欧洲Ⅱ号法规限制的50%,达到了预期的设计目标。 相似文献
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在电喷发动机上燃用LPG的试验研究 总被引:2,自引:0,他引:2
我国的LPG中C4H10(丁烷)含量比较大。在电喷发动机上使用汽油、纯C,H8(丙烷)和75%C3H8 25%C4H10三种燃料进行对比试验。当用纯C3H8代替汽油时发动机功率下降10%,但有害排放物下降5090%。在LPG中当提高C4H10的比例为25%时,发动机功率下降幅度减少,同时有害排放物可继续下降。在我国作为清洁燃料,LPG在电喷发动机上的应用具有广阔的前景。 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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This paper presents some experimental investigations on dual fuel operation of a 4 cylinder (turbocharged and intercooled) 62.5 kW gen-set diesel engine with hydrogen, liquefied petroleum gas (LPG) and mixture of LPG and hydrogen as secondary fuels. Results on brake thermal efficiency and emissions, namely, un-burnt hydrocarbon (HC), carbon monoxide (CO), NOx and smoke are presented here. The paper also includes vital information regarding performances of the engine at a wide range of load conditions with different gaseous fuel substitutions. When only hydrogen is used as secondary fuel, maximum enhancement in the brake thermal efficiency is 17% which is obtained with 30% of secondary fuel. When only LPG is used as secondary fuel, maximum enhancement in the brake thermal efficiency (of 6%) is obtained with 40% of secondary fuel. Compared to the pure diesel operation, proportion of un-burnt HC and CO increases, while, emission of NOx and smoke reduces in both cases. On the other hand, when 40% of mixture of LPG and hydrogen is used (in the ratio 70:30) as secondary fuel, brake thermal efficiency enhances by 27% and HC emission reduces by 68%. Further, shortcoming of low efficiency at lower load condition in a dual fuel operation is removed when a mixture of hydrogen and LPG is used as the secondary fuel at higher than 10% load condition. 相似文献
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In this study, experiments were performed on 4 cylinder turbocharged, intercooled with 62.5 kW gen-set diesel engine by using hydrogen, liquefied petroleum gas (LPG) and mixture of LPG and hydrogen as secondary fuels. The experiments were performed to measure ignition delay period at different load conditions and various diesel substitutions. The experimental results have been compared with ignition delay correlation laid down by other researchers for diesel and dual fuel diesel engine. It is found that ignition delay equation based on pressure, temperature and oxygen concentration for a dual fuel diesel engine run on diesel-biogas gives variation up to 6.56% and 14.6% from the present experimental results, while ignition delay equation for a pure diesel engine gives 7.55% and 33.3% variation at lower and higher gaseous fuel concentrations, respectively. It is observed that the ignition delay of dual fuel engine depends not only on the type of gaseous fuels and their concentrations but also on charge temperature, pressure and oxygen concentration. 相似文献