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农用乳化柴油的研究与实践 总被引:3,自引:0,他引:3
介绍了HQ-1型柴油乳化剂的研制过程。按柴油:水:乳化剂=70:30:1(重量比)的比例配制的乳化油,在不同机器上进行试验研究.研究结果表明:台架试验平均节油率为16.05%,行车试验节油率为17.58%~22.24%,烟度排放降低率为49.03%,对机器零件无腐蚀、可延缓磨损,具有显著的经济效益和社会效益。 相似文献
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本文介绍的燃油锅炉助燃添加剂的研究结果表明:将其应用于柴油的平均节油率为5%以上,重油为10%以上;烟度降低10%-25%;并可在一定程度上减少有害物的排放。此外,该助燃添加剂还还具有减少燃烧系统中积碳、改善燃油品质和使用性能,提高抗腐蚀能力等功能。 相似文献
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柴油机多效燃油助剂的研究及应用 总被引:10,自引:0,他引:10
柴油机等热能动力装置每年要消耗大量的柴油和重油,而且排气冒黑烟也较严重。为此,开发研制出一种具有节能,净化,防腐等功能的柴油及重油助燃剂,研究结果表明:该助该剂应用于柴油的综合平均节油纺为2.5%以上,应用于重油为5%-10%;烟度降低25%以上;并且还具有减少燃烧系统积炭,降低CO及HC的有害排放量,改善燃油品质和使用性质,提高抗腐蚀能力等功能。 相似文献
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微乳柴油的制备及其性能研究 总被引:9,自引:0,他引:9
本文介绍了微乳柴油的组成,确定了柴油、水、表面活性剂、助表面活性剂的质量配比;对制得的微乳柴油进行了粘度、稳定性、节油率、尾气分析和烟度测试。研究结果表明:表面活性剂含量为3%、助表面活性剂为0.28%、含水量为10.5%时,制得微乳柴油的粘度符合燃油国家标准。该微乳柴油在5~60℃温度范围内,稳定性在半年以上;在各种工况条件下微乳柴油都具有节能作用;与0#柴油相比,微乳柴油尾气排放CO降低8.3%、HC降低9.5%、NOx降低28.5%,降污作用显著。 相似文献
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采用离子电流分析法实现发动机爆震信号的正确检测 总被引:5,自引:1,他引:5
本描述了了种直接利用火花塞电极作为传感器检测发动机爆震的方法。作在章中详细分析及讨论了离子电流的产生机理及影响其测量的因素,并利用这一方法在发动机做了大量的试验研究,获得了宝贵的第一手资料。为了获得正确的信号检测,作在火花塞电极上加一定的直汉电压、使其能灵敏的感受燃气密度的变化。 相似文献
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Ahmet Uyumaz Bilal Aydoğan Hamit Solmaz Emre Yılmaz Derya Yeşim Hopa Tuba Aksoy Bahtli Özgür Solmaz Fatih Aksoy 《能源学会志》2019,92(5):1406-1418
In this study, waste tyre was pyrolyzed at different conditions such as temperature, heating rate and inert purging gas (N2) flow rate. Pyrolysis parameters were optimized. Optimum parameters were determined. The main objective of this study was to investigate combustion, performance and emissions of diesel and waste tyre oil fuel blend. Experimental investigation was performed in a single cylinder, direct injection, air cooled diesel engine at maximum engine torque speed of 2200 rpm and four different engine load including 3.75, 7.5, 11.25 and 15 Nm. The effects of waste tyre oil on combustion characteristics such as cylinder pressure, heat release rate, ignition delay (ID), combustion duration, engine performance were investigated. In-cylinder pressure and heat release rate increased with waste tyre oil fuel blend (W10) with the increase of engine load. In addition, ID was shortened with the increase of engine load for test fuels but it increased with the addition of waste tyre oil. Lower imep values were obtained because of the lower calorific value of waste tyre oil fuels. Maximum thermal efficiencies were determined as 28.27% and %25.12 with diesel and W10 respectively at 11.25 Nm engine load. When test results were examined, it was seen that waste tyre oil highly affected combustion characteristics, performance and emissions. 相似文献
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小升程凸轮轴发动机HCCI燃烧特性的研究 总被引:1,自引:0,他引:1
为了在发动机的低速低负荷区实现均质充量压缩着火(HCCI)燃烧,设计了气门升程小和气门开启持续期短的进、排气门凸轮轴,并将其安装在Ricardo Hydra单缸汽油机上。试验研究了发动机使用理论空燃比混合气时的燃烧情况,结果表明,使用负气门重叠角可以在低速低负荷区实现HCCI燃烧。在HCCI燃烧方式下运行时的平均指示压力(PIMEP)依赖于气门定时和发动机转速。排气门关闭越早,缸内的残余废气量增加,每循环进气量减少,燃烧持续期变长,PIMEP减小,然而泵气损失减小;进气相位对PIMEP的影响小于排气相位的影响;高的发动机转速对燃烧过程的影响类似于排气门早关. 相似文献
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The mathematical models to predict pressure, net heat release rate, mean gas temperature, and brake thermal efficiency for dual fuel diesel engine operated on hydrogen, LPG and mixture of LPG and hydrogen as secondary fuels are developed. In these models emphasis have been given on spray mixing characteristics, flame propagation, equilibrium combustion products and in-cylinder processes, which were computed using empirical equations and compared with experimental results. This combustion model predicts results which are in close agreement with the results of experiments conducted on a multi cylinder turbocharged, intercooled gen-set diesel engine. The predictions are also in close agreement with the results on single cylinder diesel engine obtained by other researchers. A reasonable agreement between the predicted and experimental results reveals that the presented model gives quantitatively and qualitatively realistic prediction of in-cylinder processes and engine performances during combustion. 相似文献
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4JB1发动机是日本五十铃汽车公司生产的四缸高速车用柴油机。在该柴油机气缸盖罩上装有网板同滤网板对球阀和膜片阀,为了解不同滤网板对4JB1柴油机润滑油消耗率和燃烧的影响,进行了试验,并对试验结果进行了分析和对比。 相似文献
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采用柴油、柴油-小桐子掺混油、小桐子油、高温小桐子油,在单缸水冷四冲程柴油机上进行了怠速工况试验,测录了多循环的瞬时气缸压力与高压油管燃油压力,对比分析了喷油与燃烧过程中各参数的循环波动。结果发现,怠速工况喷油过程中,喷油持续期的循环波动最明显,小桐子油的喷油始点滞后,喷油持续期长,喷油压力大,喷油过程的循环波动略大;怠速工况燃烧过程中,最大燃烧压力升高率和滞燃期的循环波动率最为明显,小桐子油滞燃期略短,燃烧压力升高率小,最高燃烧压力低,滞燃期和最大燃烧压力升高率的循环波动明显大于柴油;燃用小桐子油增大了原机的循环波动,怠速运转不如柴油稳定。 相似文献
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