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固体氧化物燃料电池 8

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Combustion and emissions of RP-3 jet fuel and diesel fuel in a single-cylinder diesel engine

《能源前沿(英文)》 2023年 第17卷 第5期   页码 664-677 doi: 10.1007/s11708-021-0787-3

摘要: The combustion characteristics and emission behaviors of RP-3 jet fuel were studied and compared to commercial diesel fuel in a single-cylinder compression ignition (CI) engine. Engine operational parameters, including engine load (0.6, 0.7, and 0.8 MPa indicating the mean effective pressure (IMEP)), the exhaust gas recirculation (EGR) rate (0%, 10%, 20%, and 30%), and the fuel injection timing (−20, −15, −10, and −5 ° crank angle (CA) after top dead center (ATDC)) were adjusted to evaluate the engine performances of RP-3 jet fuel under changed operation conditions. In comparison to diesel fuel, RP-3 jet fuel shows a retarded heat release and lagged combustion phase, which is more obvious under heavy EGR rate conditions. In addition, the higher premixed combustion fraction of RP-3 jet fuel leads to a higher first-stage heat release peak than diesel fuel under all testing conditions. As a result, RP-3 jet fuel features a longer ignition delay (ID) time, a shorter combustion duration (CD), and an earlier CA50 than diesel fuel. The experimental results manifest that RP-3 jet fuel has a slightly lower indicated thermal efficiency (ITE) compared to diesel fuel, but the ITE difference becomes less noticeable under large EGR rate conditions. Compared with diesel fuel, the nitrogen oxides (NOx) emissions of RP-3 jet fuel are higher while its soot emissions are lower. The NOx emissions of RP-3 can be effectively reduced with the increased EGR rate and delayed injection timing.

关键词: RP-3 jet fuel     diesel     engine     combustion     emissions    

Effects of Fischer-Tropsch diesel fuel on combustion and emissions of direct injection diesel engine

HUANG Yongcheng, WANG Shangxue, ZHOU Longbao

《能源前沿(英文)》 2008年 第2卷 第3期   页码 261-267 doi: 10.1007/s11708-008-0062-x

摘要: Effects of Fischer-Tropsch (F-T) diesel fuel on the combustion and emission characteristics of a single-cylinder direct injection diesel engine under different fuel delivery advance angles were investigated. The experimental results show that F-T diesel fuel exhibits shorter ignition delay, lower peak values of premixed burning rate, lower combustion pressure and pressure rise rate, and higher peak value of diffusion burning rate than conventional diesel fuel when the engine remains unmodified. In addition, the unmodified engine with F-T diesel fuel has lower brake specific fuel consumption and higher effective thermal efficiency, and presents lower HC, CO, NO and smoke emissions than conventional diesel fuel. When fuel delivery advance angle is retarded by 3 crank angle degrees, the combustion duration is obviously shortened; the peak values of premixed burning rate, the combustion pressure and pressure rise rate are further reduced; and the peak value of diffusion burning rate is further increased for F-T diesel fuel operation. Moreover, the retardation of fuel delivery advance angle results in a further significant reduction in NO emissions with no penalty on specific fuel consumption and with much less penalty on HC, CO and smoke emissions.

关键词: combustion pressure     further     HC     operation     single-cylinder    

Effect of distributions of fuel concentration and temperature on ignition processes in a diesel PCCI

Yang YU, Wanhua SU,

《能源前沿(英文)》 2010年 第4卷 第2期   页码 269-279 doi: 10.1007/s11708-009-0046-5

摘要: The distributions of fuel concentration and temperature have significant effect on the ignition processes of diesel premixed charge compression ignition (PCCI) combustion. It was found in this study that the ignition process of PCCI combustion organized by multi-pulse injection was strongly influenced by conditions of fuel stratification. The start of low temperature reactions occurred in the leaner area of the combustion chamber in the test engine because the temperature here first reached the point of low temperature reactions. Ignition always occurred in the position where the mixture featured with equivalence ratios close to the mean equivalence ratio of the overall mixture, while the neighboring area of the initial ignition area accumulate heat with a finite speed until finally autoigniting. Moreover, the appearance of highest combustion temperature occurred in the same area at the combustion chamber. For more homogeneous mixture, a higher amount of mixture reached ignition simultaneously, resulting in a larger initial ignition area and a higher temperature at the ignition area. Furthermore, V-type distribution of equivalence ratio was found to be beneficial to retarding high temperature reaction.

关键词: PCCI     fuel stratification     multi-pulse injection     ignition    

Combustion analysis of a hydrogen-diesel fuel operated DI diesel engine with exhaust gas recirculation

M. LOGANATHAN, A. VELMURUGAN, TOM PAGE, E. JAMES GUNASEKARAN, P. TAMILARASAN

《能源前沿(英文)》 2017年 第11卷 第4期   页码 568-574 doi: 10.1007/s11708-017-0461-y

摘要: The rapid depletion of fossil fuel and growing demand necessitates researchers to find alternative fuels which are clean and sustainable. The need for finding renewable, low cost and environmentally friendly fuel resources can never be understated. An efficient method of generation and storage of hydrogen will enable automotive manufacturers to introduce hydrogen fuelled engine in the market. In this paper, a conventional DI diesel engine was modified to operate as gas engine. The intake manifold of the engine was supplied with hydrogen along with recirculated exhaust gas and air. The injection rates of hydrogen were maintained at three levels with 2 L/min, 4 L/min, 6 L/min and 8 L/min and 10 L/min with an injection pressure of 2 bar. Many of the combustion parameters like heat release rate (HRR), ignition delay, combustion duration, rate of pressure rise (ROPR), cumulative heat release rate (CHR), and cyclic pressure fluctuations were measured. The HRR peak pressure decreased with the increase in EGR rate, while combustion duration increased with the EGR rate. The cyclic pressure variation also increased with the increase in EGR rate.

关键词: hydrogen     exhaust gas recirculation (EGR)     diesel     combustion     heat release rate (HRR)     combustion duration    

Numerical simulation of biodiesel fuel combustion and emission characteristics in a direct injectiondiesel engine

Yi REN, Ehab ABU-RAMADAN, Xianguo LI,

《能源前沿(英文)》 2010年 第4卷 第2期   页码 252-261 doi: 10.1007/s11708-010-0036-7

摘要: The effect of the physical and chemical properties of biodiesel fuels on the combustion process and pollutants formation in Direct Injection (DI) engine are investigated numerically by using multi-dimensional Computational Fluid Dynamics (CFD) simulation. In the current study, methyl butanoate (MB) and -heptane are used as the surrogates for the biodiesel fuel and the conventional diesel fuel. Detailed kinetic chemical mechanisms for MB and -heptane are implemented to simulate the combustion process. It is shown that the differences in the chemical properties between the biodiesel fuel and the diesel fuel affect the whole combustion process more significantly than the differences in the physical properties. While the variations of both the chemical and the physical properties between the biodiesel and diesel fuel influence the soot formation at the equivalent level, the variations in the chemical properties play a crucial role in the NO emissions formation.

关键词: biodiesel     diesel engine     CFD simulation     combustion     pollutant formation    

Study of engine performance, emission and combustion characteristics fueled with diesel-like fuel produced

V. Edwin Geo, Ankit Sonthalia, Fethi Aloui, Femilda Josephin J. S.

《环境科学与工程前沿(英文)》 2018年 第12卷 第4期 doi: 10.1007/s11783-018-1063-6

摘要:

To derive liquid fuel from waste engine oil and plastics thorough pyrolysis process

To make equal blend of waste engine oil and plastics with diesel fuel

To find the suitability of fuel from waste in diesel engine through performance, emission and combustion characteristics

关键词: Waste engine oil     Waste plastic oil     Diesel fuel     Pyrolysis     Compression ignition engine    

Performance and emission characteristics of a diesel engine operating on different water in diesel emulsion

Seyed Saeed HOSEINI, Mohammad Amin SOBATI

《能源前沿(英文)》 2019年 第13卷 第4期   页码 636-657 doi: 10.1007/s11708-019-0646-7

摘要: The nitrogen oxide (NO ) release of diesel engines can be reduced using water in diesel emulsion fuel without any engine modification. In the present paper, different formulations of water in diesel emulsion fuels were prepared by ultrasonic irradiation. The water droplet size in the emulsion, polydisperisty index, and the stability of prepared fuel was examined, experimentally. Afterwards, the performance characteristics and exhaust emission of a single cylinder air-cooled diesel engine were investigated using different water in diesel emulsion fuels. The effect of water content (in the range of 5%–10% by volume), surfactant content (in the range of 0.5%–2% by volume), and hydrophilic-lipophilic balance (HLB) (in the range of 5–8) was examined using Box-Behnken design (BBD) as a subset of response surface methodology (RSM). Considering multi-objective optimization, the best formulation for the emulsion fuel was found to be 5% water, 2% surfactant, and HLB of 6.8. A comparison was made between the best emulsion fuel and the neat diesel fuel for engine performance and emission characteristics. A considerable decrease in the nitrogen oxide emission (–18.24%) was observed for the best emulsion fuel compared to neat diesel fuel.

关键词: water in diesel emulsion fuel     hydrophilic-lipophilic balance (HLB)     response surface methodology (RSM)     emulsion stability     engine performance     exhaust emission    

Optimization of fuel supply map during starting process of electronic controlled diesel engine

LIANG Jinguang, YU Xiumin, GAO Yue, WANG Yunkai, YU Hongyang, Gong Baoli

《能源前沿(英文)》 2008年 第2卷 第4期   页码 410-415 doi: 10.1007/s11708-008-0080-8

摘要: Tests were conducted to study influence of fuel supply map during the starting process of an electronic controlled diesel engine using an electronic controlled diesel engine which was made up of a CA498Z diesel engine, a VP37 electronic controlled distributor injection pump management system and a VS100 calibration system. The calibration process of starting fuel supply map was educed under the principle of low HC emission and rapid starting velocity. The calibration methods of starting fuel supply map were obtained.

关键词: supply     management     CA498Z     process     controlled distributor    

A comparative study of particle size distribution from two oxygenated fuels and diesel fuel

Xiaoyan SHI, Kebin HE, Jie ZHANG, Yongliang MA, Yunshan GE, Jianwei TAN,

《环境科学与工程前沿(英文)》 2010年 第4卷 第1期   页码 30-34 doi: 10.1007/s11783-010-0011-x

摘要: Oxygenated fuels are known to reduce particulate matter (PM) emissions from diesel engines. In this study, 100% soy methyl ester (SME) biodiesel fuel (B100) and a blend of 10% acetal denoted by A-diesel with diesel fuel were tested as oxygenated fuels. Particle size and number distributions from a diesel engine fueled with oxygenated fuels and base diesel fuel were measured using an Electrical Low Pressure Impactor (ELPI). Measurements were made at ten steady-state operational modes of various loads at two engine speeds. It was found that the geometric mean diameters of particles from SME and A-diesel were lower than that from base diesel fuel. Compared to diesel fuel, SME emitted more ultra-fine particles at rated speed while emitting less ultra-fine particles at maximum speed. Ultra-fine particle number concentrations of A-diesel were much higher than those of base diesel fuel at most test modes.

关键词: oxygenated fuel     diesel particulate matter     particle size distribution     biofuel    

Impact of oxygen enriched combustion on the performance of a single cylinder diesel engine

K. RAJKUMAR, P. GOVINDARAJAN

《能源前沿(英文)》 2011年 第5卷 第4期   页码 398-403 doi: 10.1007/s11708-011-0157-7

摘要: In the present experiment, a computerized single cylinder diesel engine with a data acquisition system was used to study the effects of oxygen enriched combustion technology (OECT) on the performance characteristics. The use of different levels of oxygen-enriched air was compared with respect to percentage load. Increasing the oxygen content in the air leads to faster burn rates and increases the combustibility at the same stoichiometry (oxygen-to-fuel ratio). These effects have the potential to increase the thermal efficiency and specific power output of a diesel engine. The power increases considerably with oxygen enrichment. In addition, oxygen enrichment can also be considered as a way to reduce the sudden loss in power output when the engine operates in a high load condition. Assessed high combustion temperature from the oxygen enriched combustion leads to high combustion efficiency. OECT reduces the volume of flue gases and reduces the effects of greenhouse effects. Engine tests were conducted in the above said engine for different loads and the following performance characteristics like brake power (BP), specific fuel consumption (SFC), mean effective pressure, brake thermal efficiency, mechanical efficiency, and exhaust gas temperature were studied. The objective of this paper is to address, in a systematic way, the key technical issues associated with applying OECT to single cylinder diesel engines.

关键词: oxygen enriched combustion     exhaust gas temperature     brake power (BP)     specific fuel consumption (SFC)    

清洁燃料生产技术的新进展

李大东,蒋福康

《中国工程科学》 2003年 第5卷 第3期   页码 6-14

摘要:

概述了我国汽、柴油生产特点及质量现状和差距,指明了当今汽、柴油质量发展趋势和清洁燃料生产技术开发应用的原则,简要介绍了我国清洁汽、柴油生产技术的新进展。

关键词: 清洁燃料     质量     标准     汽油     柴油     生产技术     进展    

新能源近期的发展态势

刘广志

《中国工程科学》 2003年 第5卷 第7期   页码 29-32

摘要:

介绍了国内外新能源的研发现状,指出了新能源的发展前景。

关键词: 新能源     生物柴油     氢能     燃料电池    

燃料/发动机系统的发展——实现可持续运输的途径 Review

Gautam Kalghatgi

《工程(英文)》 2019年 第5卷 第3期   页码 510-518 doi: 10.1016/j.eng.2019.01.009

摘要:

全球对运输能源的需求巨大且不断增长,主要由在内燃机(ICE)中燃烧的石油衍生液体燃料来满足。此外,未来对航空燃油和柴油需求的增长速度预计将快于对汽油的需求,可能会使低辛烷值汽油更容易获得。许多重大措施力争发展电池电动汽车(BEV)和燃料电池作为内燃机汽车的替代品,并寻求如生物燃料和天然气等燃料作为传统液体燃料的替代燃料。然而,这些替代方案中的研究基础都非常薄弱,并且还要克服重大障碍从而快速自由地发展。因此,在未来几十年内,运输(特别是商业运输)将继续主要由燃用石油基液体燃料的内燃机提供动力。因此,只有通过改进内燃机才能确保交通运输的可承受性、能源安全,控制对温室气体(GHG)排放和空气质量的影响。实际上,内燃机在使用目前市场上燃料的同时,通过改进燃烧系统、控制系统和后处理系统,以及在部分电气化混动辅助下将进一步得到改进。然而,通过改进燃料/ 发动机系统,内燃机依旧还有很多发展空间,可以使我们更多地利用制造燃料过程中的收益并使用易于获得的部件。如汽油压燃(GCI),可在压缩点火发动机中使用低辛烷值汽油,使汽油受压缩着火。与现代柴油发动机相比,GCI可以实现接近柴油机的效率,且在成本更低的情况下较易控制氮氧化物(NOx)和颗粒物的排放。按需辛烷值(OOD)还有助于优化燃料的抗爆性能,从而提高系统的整体效率。

关键词: 运输能源     内燃机     汽油     柴油    

Effects of a diesel oxidation catalyst on gaseous pollutants and fine particles from an engine operatingon diesel and biodiesel

Xiaoyan SHI, Kebin HE, Weiwei SONG, Xingtong WANG, Jihua TAN

《环境科学与工程前沿(英文)》 2012年 第6卷 第4期   页码 463-469 doi: 10.1007/s11783-011-0317-3

摘要: The effects of a diesel oxidation catalytic (DOC) converter on diesel engine emissions were investigated on a diesel bench at various loads for two steady-state speeds using diesel fuel and B20. The DOC was very effective in hydrocarbon (HC) and CO oxidation. Approximately 90%–95% reduction in CO and 36%–70% reduction in HC were realized using the DOC. Special attention was focused on the effects of the DOC on elemental carbon (EC) and organic carbon (OC) fractions in fine particles (PM ) emitted from the diesel engine. The carbonaceous compositions of PM were analyzed by the method of thermal/optical reflectance (TOR). The results showed that total carbon (TC), OC and EC emissions for PM from diesel fuel were generally reduced by the DOC. For diesel fuel, TC emissions decreased 22%–32% after the DOC depending on operating modes. The decrease in TC was attributed to 35%–97% decrease in OC and 3%–65% decrease in EC emissions. At low load, a significant increase in the OC/EC ratio of PM was observed after the DOC. The effect of the DOC on the carbonaceous compositions in PM from B20 showed different trends compared to diesel fuel. At low load, a slight increase in EC emissions and a significant decrease in OC/EC ratio of PM after DOC were observed for B20.

关键词: diesel oxidation catalyst (DOC)     diesel particulate matters     elemental carbon (EC)     organic carbon (OC)     biodiesel    

生物柴油技术进展与产业前景

冀星,郗小林,孔林河,李俊峰,李丽

《中国工程科学》 2002年 第4卷 第9期   页码 86-93

摘要:

综述了世界各国生物柴油技术的研究、应用及产业发展状况,分析了生物柴油制备、应用中存在的 问题,论述了发展生物柴油产业对我国石油安全、国民经济建设以及对农业产业结构调整的贡献和生物柴油对 环境的作用及可能造成的冲击,展望了该产业的发展前景,对该产业的发展提出了建议。

关键词: 生物柴油     生物柴油制备     生物柴油产业    

标题 作者 时间 类型 操作

Combustion and emissions of RP-3 jet fuel and diesel fuel in a single-cylinder diesel engine

期刊论文

Effects of Fischer-Tropsch diesel fuel on combustion and emissions of direct injection diesel engine

HUANG Yongcheng, WANG Shangxue, ZHOU Longbao

期刊论文

Effect of distributions of fuel concentration and temperature on ignition processes in a diesel PCCI

Yang YU, Wanhua SU,

期刊论文

Combustion analysis of a hydrogen-diesel fuel operated DI diesel engine with exhaust gas recirculation

M. LOGANATHAN, A. VELMURUGAN, TOM PAGE, E. JAMES GUNASEKARAN, P. TAMILARASAN

期刊论文

Numerical simulation of biodiesel fuel combustion and emission characteristics in a direct injectiondiesel engine

Yi REN, Ehab ABU-RAMADAN, Xianguo LI,

期刊论文

Study of engine performance, emission and combustion characteristics fueled with diesel-like fuel produced

V. Edwin Geo, Ankit Sonthalia, Fethi Aloui, Femilda Josephin J. S.

期刊论文

Performance and emission characteristics of a diesel engine operating on different water in diesel emulsion

Seyed Saeed HOSEINI, Mohammad Amin SOBATI

期刊论文

Optimization of fuel supply map during starting process of electronic controlled diesel engine

LIANG Jinguang, YU Xiumin, GAO Yue, WANG Yunkai, YU Hongyang, Gong Baoli

期刊论文

A comparative study of particle size distribution from two oxygenated fuels and diesel fuel

Xiaoyan SHI, Kebin HE, Jie ZHANG, Yongliang MA, Yunshan GE, Jianwei TAN,

期刊论文

Impact of oxygen enriched combustion on the performance of a single cylinder diesel engine

K. RAJKUMAR, P. GOVINDARAJAN

期刊论文

清洁燃料生产技术的新进展

李大东,蒋福康

期刊论文

新能源近期的发展态势

刘广志

期刊论文

燃料/发动机系统的发展——实现可持续运输的途径

Gautam Kalghatgi

期刊论文

Effects of a diesel oxidation catalyst on gaseous pollutants and fine particles from an engine operatingon diesel and biodiesel

Xiaoyan SHI, Kebin HE, Weiwei SONG, Xingtong WANG, Jihua TAN

期刊论文

生物柴油技术进展与产业前景

冀星,郗小林,孔林河,李俊峰,李丽

期刊论文