Comparative study of combustion and emissions of kerosene (RP-3), kerosene-pentanol blends and diesel in a compression ignition engine

Comparative study of combustion and emissions of kerosene (RP-3), kerosene-pentanol blends and diesel in a compression ignition engine
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压燃式发动机中煤油 (RP-3)、煤油-戊醇混合物和柴油的燃烧和排放比较研究

DOI:
10.1016/j.apenergy.2017.06.036
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发表时间:
2017-10
期刊:
影响因子:
11.2
通讯作者:
Roskilly Anthony Paul
Roskilly Anthony Paul
中科院分区:
工程技术1区
文献类型:
--
作者:
Chen Longfei;Ding Shirun;Liu Haoye;Lu Yiji;Li Yanfei;Roskilly Anthony Paul

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用于小型通用航空飞机的航空活塞发动机目前正面临从由AVGAS(航空汽油)提供动力到由重质燃料(柴油或煤油)提供动力的过渡。在一台单缸压燃式发动机上对柴油、航空煤油火箭推进剂3(RP-3)和RP-3-戊醇混合燃料的燃烧和排放特性进行了对比研究。通过试验确定了反映发动机燃烧性能的放热率、指示热效率、着火延迟期、燃烧持续期和指示平均有效压力变化系数(COV)。结果表明RP-3及其温和的戊醇混合物(20%体积)在现代CI发动机中的可行性,而如果使用更高比例的戊醇(40%体积),则需要进一步优化喷射策略。柴油、RP-3及其戊醇混合物在燃烧和排放方面的差异是明显的,特别是在着火延迟期、燃烧持续期和碳烟排放方面。与柴油相比,RP-3的指示热效率提高了1.4- 12.4%,而正戊醇的加入使指示热效率降低了1- 6.5%。RP-3及其戊醇混合物在高发动机负荷下与柴油相比将碳烟排放降低了近一个数量级,而对氮氧化物(NOx)排放没有明显影响。同时,RP-3及其戊醇混合物的一氧化碳(CO)和总烃(THC)排放在低负荷时显著增加,而CO在高负荷时略有下降。
Aviation Piston Engines for small general aviation aircrafts are currently facing a transition from being powered by AVGAS (aviation gasoline) to being powered by heavy fuels (diesel or kerosene). The present study compared the combustion and emission characteristics of diesel, aviation kerosene rocket propellant 3 (RP-3) and RP-3-pentanol blends in a single cylinder compression ignition (CI) engine. Heat release rate, indicated thermal efficiency, ignition delay, combustion duration, and coefficient of variation (COV) of indicated mean effective pressure were experimentally determined to reflect the engine combustion performance. The results demonstrated the feasibility of RP-3 and its mild pentanol blend (20% by volume) in modern CI engines whilst further optimisation of the injection strategy is needed if a higher ratio of pentanol (40% by volume) is used. The discrepancy in terms of combustion and emissions between diesel, RP-3 and its pentanol blends are appreciable, especially for ignition delay, combustion duration and soot emissions. Compared with diesel, RP-3 improved the indicated thermal efficiency by 1.4–12.4%, but pentanol addition decreased that by 1–6.5%. RP-3 and its pentanol blends reduced the soot emissions by nearly an order of magnitude at high engine loads compared with diesel without evident impact on nitrogen oxide (NOx) emissions. Meanwhile, Carbon monoxide (CO) and total hydrocarbon (THC) emissions of RP-3 and its pentanol blends experienced a significant increase at low loads, but CO showed a slight decrease at high loads.
DOI: 10.1016/j.fuel.2014.10.053
发表时间: 2015-02
期刊: Fuel
影响因子: 7.4
作者:
Haifeng Liu;Yan Zhang;Xiaofan Zhong;Mingfa Yao
通讯作者: Mingfa Yao
DOI: --
发表时间: 2015-03
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通讯作者: 陈伟,等;Chen Wei
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期刊: Energy Sources, Part A: Recovery, Utilization, and Environmental Effects
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发表时间: 2016-03
期刊: Applied Energy
影响因子: 11.2
作者:
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DOI: 10.1016/j.apenergy.2014.01.043
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影响因子: 11.2
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