Journal articles: 'Exhaust gas analysis'

1

Lv, Wei, Xiao Nan Zhang, Rui Yang Li, Zhong Xia Zhao, Xi Yu Lin, Chao Cheng, and Jian Wei Han. "Biomass Boiler Exhaust Gas Temperature Factors Analysis." Advanced Materials Research 864-867 (December 2013): 1981–84. http://dx.doi.org/10.4028/www.scientific.net/amr.864-867.1981.

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The problems of the high exhaust gas temperature in the biomass boiler which moves normally are analyzed, and the anti-balance method to get the boiler efficiency is used to get the relationship between the exhaust gas temperature and the boiler efficiency. Greater exhaust gas heat loss, smaller the boiler efficiency. According to 35t/h biomass grate boiler, the factors which affect exhaust gas temperature are analyzed and summarized

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Collings, Nick, Keith Glover, Bruce Campbell, and Stewart Fisher. "Internal combustion engine exhaust gas analysis." International Journal of Engine Research 18, no. 4 (July 29, 2016): 308–32. http://dx.doi.org/10.1177/1468087416656946.

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A generalized approach, based on linear algebra, is described for processing exhaust gas analyser data. Systematic methods of deriving useful relationships from arbitrary data are proposed and used to produce several novel and useful results, as well as to show how existing relationships may be derived in forms that involve no approximations. The methods developed lend themselves to automatic real-time assessment of the consistency of gas analyser data, and in the case of inconsistencies, identifying plausible reasons. The approach is also used to develop methods to examine storage and release mechanisms within after-treatment devices, such as oxygen storage/release in three-way catalysts, soot oxidation in particle filters and water condensation/evaporation.

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Qiu, Li Jun, and Su Ying Xu. "The Turbocharger Exhaust Gas Regulator Design and Analysis." Applied Mechanics and Materials 644-650 (September 2014): 485–88. http://dx.doi.org/10.4028/www.scientific.net/amm.644-650.485.

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In order to adapt to the needs of internal combustion engine speed variation of the turbocharger. Using waste gas regulator control exhaust gas inlet device. The effect of exhaust gas regulator is for adjusting the gas flow velocity and direction. When the internal combustion engine running at low speed raising the impeller speed. Exhaust gas regulator and axial moving blades rotating blades of two kinds of structure. The axial moving blade structure is changing the way nozzle ring opening work. Rotating blade structure is working on changing the way of blade Angle. Exhaust gas to adjust the turbocharger is a control of internal combustion engine air pressurization value of the speed changes.

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Zhu, Rui, Jian Xing Ren, Fang Qin Li, Hong Du Zhang, and Yun Tang. "Thermal and Stress Field Analysis in Heavy-Duty Gas Turbine Exhaust System." Advanced Materials Research 516-517 (May 2012): 688–91. http://dx.doi.org/10.4028/www.scientific.net/amr.516-517.688.

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Heavy-duty gas turbine is used widely in power generation industry for many advantages. Gas turbine exhaust system is an important component of the gas turbine. The work to study the exhaust system was less in the past. In fact, structure design of the exhaust system has important influence on performance and life of the gas turbine. In this paper, the three-dimensional structural model of gas turbine exhaust system is built, the thermal field and stress field for the exhaust system are analyzed by using finite element method (FEM). The maximum stress and distribution characteristics of stress field, the highest temperature and distribution characteristics of thermal field in the exhaust system are computed. These provide a reliable basis for reasonable design and safety evaluation of the exhaust system in gas turbine.

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Yoshizawa, K., K. Mori, K. Arai, and A. Iiyama. "Numerical Analysis of Unsteady Exhaust Gas Flow and Its Application for Lambda Control Improvement." Journal of Engineering for Gas Turbines and Power 125, no. 2 (April 1, 2003): 555–62. http://dx.doi.org/10.1115/1.1473149.

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A multidimensional computational fluid dynamics (CFD) tool has been applied to analyze the exhaust system of a gasoline engine. Since gas flow in the exhaust manifold is affected by exhaust pulsations, prediction methods based on steady flow are not able to predict gas flow precisely enough. Therefore, a new multidimensional calculation method, called pulsation flow calculation, has been developed. A one-dimensional gas exchange simulation and a three-dimensional exhaust gas flow calculation are combined to simulate gas flow pulsations caused by the gas exchange process. Predicted gas flow in the exhaust manifold agreed with the experimental data. With the aim of reducing emissions, the pulsation flow calculation method has been applied to improve lambda feedback control using an oxygen sensor. The factors governing sensor sensitivity to the exhaust gas from each cylinder were clarified. The possibility of selecting the oxygen sensor location in the exhaust manifold on the basis of calculations was proved. The effect of an exhaust manifold with equal-length cylinder runners on achieving uniform sensor sensitivities was made clear. In addition, a new lambda feedback control method for an exhaust manifold with different-length cylinder runners is proposed.

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Minato, Kiyoyuki, and Toshio Kobayashi. "Analysis for Exhaust Gas from Road Traffic." Journal of the Visualization Society of Japan 13, Supplement1 (1993): 55–58. http://dx.doi.org/10.3154/jvs.13.supplement1_55.

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7

Buckland, Barry, Tom Brix, Henry Fastert, Kodzo Gbewonyo, George Hunt, and Deepak Jain. "Fermentation Exhaust Gas Analysis Using Mass Spectrometry." Nature Biotechnology 3, no. 11 (November 1985): 982–88. http://dx.doi.org/10.1038/nbt1185-982.

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Papaioannou, Nick, Felix CP Leach, Martin H. Davy, Adam Weall, and Brian Cooper. "Evaluation of exhaust gas recirculation techniques on a high-speed direct injection diesel engine using first law analysis." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 233, no. 3 (January 23, 2018): 710–26. http://dx.doi.org/10.1177/0954407017749110.

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The effects of different exhaust gas recirculation (EGR) strategies on engine efficiency and the resulting energy flows at two speed/load conditions (1500 r/min/6.8 bar net indicated mean effective pressure (nIMEP) and 1750 r/min/13.5 bar nIMEP) were studied using a first law analysis approach. The EGR strategies tested were as follows: cooled high-pressure exhaust gas recirculation (baseline), the application of exhaust gas recirculation with the swirl flap closed and the use of exhaust gas recirculation under constant λ conditions. The closed swirl flap exhaust gas recirculation strategy reduced brake efficiency under high load conditions and increased heat transfer to the coolant for both load cases. Soot and CO emissions increased at high load, however, with an increase in NOx relative to the baseline case. The constant λ exhaust gas recirculation strategy reduced brake efficiency under low load, as well as the heat flow to the coolant for both load cases. The constant λ exhaust gas recirculation strategy benefited smoke emissions and increased combustion exhaust gas recirculation tolerance, albeit with a penalty in NOx emission.

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Hou, Xue Jun, and Peng Xiao. "Analysis of Exhaust Gas Pollution Processing of Z12V190 Diesel Engine for Petroleum Drilling." Advanced Materials Research 518-523 (May 2012): 2344–47. http://dx.doi.org/10.4028/www.scientific.net/amr.518-523.2344.

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With the increasingly prominent problem regarding rapid economy development and a gradually serious environmental pollution, the waste gas pollution processing have received significant attention. Z12V190 diesel engine for petroleum drilling has high fuel consumption and releases large amounts of harmful waste gas into the atmosphere to cause serious environmental pollution. In this work, the mainly harmful components of Z12V190 exhaust gas are analysed, the corresponding methods of purification and processing about Z12V190 exhaust gas pollution discussed. In order to purify treatment pollution, and ultimate to lay the foundation for pollution treatment, the process flows of the exhaust gas pollution processing are preliminary designed.

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Mukti, Suherman, Fadli Cahya Megawanto, and Hari Arthaa. "EXHAUST TEMPERATURE ANALYSIS OF UAV PROPELLER MATERIALS." Majalah Ilmiah Pengkajian Industri 14, no. 2 (August 31, 2020): 93–98. http://dx.doi.org/10.29122/mipi.v14i2.4036.

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This paper presents an exhaust temperature analysis of a UAV Propeller Material to maintain the performance of the propulsion system during operation, especially in a long-range condition. A pusher Propeller experiences direct contact with heat from the exhaust gas. In this study, a Beechwood material with a protective layer of corrosion prevention is used as a propeller blade that works at a range of high temperatures. An experimental methodology was carried out to analyse the strength and propeller deformation. The results of this experimental study show that conservatively the propeller will be heated to 32.9°C. Since this is below the temperature limit, the exhaust gas to pusher propeller on UAV does not affect the propeller performance.Key Words: Exhaust; Temperature; UAV; Propeller; Wood

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Korlak, Piotr Kamil. "Comparative analysis and estimation of amounts of exhaust gas waste heat from the Tier III-compliant dual-fuel low-speed marine main engines." Pomorstvo 35, no. 1 (June 30, 2021): 128–40. http://dx.doi.org/10.31217/p.35.1.14.

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Existing and future IMO restrictions on emission of harmful substances contained in exhaust gas have introduced an obligation to implement technical solutions to reduce NOX, SOX and CO2 emissions. Reduction in NOX and SOX emissions has been achieved by systems (i.e. SCR and EGR) ensuring Tier III-compliant exhaust gas composition. SCR and EGR systems have also affected the amount of exhaust gas waste heat. Therefore reduction in CO2 emissions has mostly been dependent on available amount of exhaust gas waste heat to produce electricity using waste heat recovery generator unit instead of medium-speed diesel generating set. Comparative analysis of amounts of exhaust gas waste heat in LNG and MGO modes under ISO ambient conditions has been carried out with particular emphasis on the impact of different variants of SCR and EGR systems. Formulae to estimate the amounts of exhaust gas waste heat have been determined using least squares method.

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TAKAWA, Takeshi, Katsumi KATAYAMA, Ken KATOHGI, and Takashi KURIBAYASHI. "Analysis of Converter Process Variables from Exhaust Gas." Transactions of the Iron and Steel Institute of Japan 28, no. 1 (1988): 59–67. http://dx.doi.org/10.2355/isijinternational1966.28.59.

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SHIMOKURI, Daisuke, and Satoru ISHIZUKA. "Exhaust Gas Analysis of a Tubular Flame Burner." Proceedings of Conference of Kyushu Branch 2003 (2003): 211–12. http://dx.doi.org/10.1299/jsmekyushu.2003.211.

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14

Bella, G., and V. Rocco. "Regeneration Analysis Under Different Exhaust Gas Thermal Conditions." Journal of Engineering for Gas Turbines and Power 112, no. 3 (July 1, 1990): 431–37. http://dx.doi.org/10.1115/1.2906514.

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A refinement of the honeycomb trap model developed by the authors for analyzing the temperature history of the trap channels during the regeneration period is presented. The first results obtained, shown in previous papers [1, 2], encouraged the authors to improve the model in order to account for the heat transfer not only along the channel length, but also in the radial direction. In order to achieve this objective, a control volume approach was used to simulate the soot regeneration in all contiguous channels along the axial and radial directions of the monolith, and to determine the wall temperature and soot oxidation as a function of time. Different thermodynamic conditions of the exhaust gas at the trap inlet were considered in order to examine the effects of cold regeneration. For the same soot amount accumulated in the trap, the soot burnup time and temperature history depend on the inlet temperature. In addition to varying the gas initial conditions, the effects of the amount of soot collected and its radial distribution in the channels, before the regeneration process takes place, were also considered in order to predict the wall temperature rise and the soot oxidation rate. The results show the temperature peak values and their location inside the trap, and permit estimation of the conditions under which the trap temperature can reach unbearable values.

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15

Hamzah, M. Z., J. Purbolaksono, J. I. Inayat-Hussain, and N. F. Nordin. "Stability analysis of a gas turbine exhaust stack." Engineering Failure Analysis 17, no. 6 (September 2010): 1466–74. http://dx.doi.org/10.1016/j.engfailanal.2010.05.008.

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16

Sekavčnik, M., T. Ogorevc, T. Katrašnik, and S. Rodman-Oprešnik. "Three-dimensional approach to exhaust gas energy analysis." Heat and Mass Transfer 48, no. 6 (November 29, 2011): 923–31. http://dx.doi.org/10.1007/s00231-011-0941-2.

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17

Jiang, Yu Rong, and Mei Bao Chen. "Failure Analysis on the Exhaust Steel Tube Explosion of Natural Gas Compressor." Advanced Materials Research 418-420 (December 2011): 940–43. http://dx.doi.org/10.4028/www.scientific.net/amr.418-420.940.

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Natural gas compressor is the absolutely necessary link of natural gas storage and transportation technology. The safety operation of the exhaust steel tube directly influences the ability of natural gas gathering and transportation system. In this paper, the accident of the exhaust steel tube explosion of natural gas compressor was carried out to study the reasons of the failure using methods of macroscopic analysis, size measurement and SEM et al and proposed the safety countermeasures. The results show that the failure of exhaust steel tube related to the wicked service conditions, rough machining, the fatigue crack initiation and propagation. The sulfide stress corrosion (SSCC) and the longitudinal processing damage accelerate the fatigue crack propagation rate.

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18

Liu, Yan Feng, Shi Ping Li, and Xiang Hong Li. "Energy-Saving Analysis of 215MW Cogeneration Boiler Adding Low Temperature Economizer." Applied Mechanics and Materials 448-453 (October 2013): 2777–80. http://dx.doi.org/10.4028/www.scientific.net/amm.448-453.2777.

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A 215MW cogeneration B&W670/13.7-M type high-pressure natural circulation boilers, the exhaust gas temperature is set as 143 °C, while in the actual operation, the average exhaust gas temperature is 155 °C, and when the unit is running at full capacity in summer the highest exhaust gas temperature is 169.6 °C. In order to satisfy the normal operating temperature of bag filter in summer peak load, and recover low temperature waste heat of fule gas, low temperature economizer is added to the thermal system. Therefore, low-temperature economizers are respectively added in four flues which are between the outlet of the air preheater and the entrance of the bag filter, this will achieve the purpose of reducing flue gas temperature by transferring heat between condensate and flue gas, ensuring the units safe operating and improving the overall operating performance of the boiler.

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Park, Jung-Keuk, Kwang-Beom Hur, Sang-Gyu Rhim, Il-Hong Oh, and In-Hwa Lee. "Experimental Study of the Landfill Gas Fuelled Micro Gas Turbine Exhaust Gas Analysis." Journal of The korean society for new and renewable energy 7, no. 3 (September 25, 2011): 67–73. http://dx.doi.org/10.7849/ksnre.2011.7.3.067.

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20

Ren, Lin Lin, Wei Ding, Zhe Zhang, Tao Chen, Ming Xin Bi, and Ying Chao Zhang. "Internal Flow Analysis of SCR-Exhaust Aftertreatment System." Applied Mechanics and Materials 574 (July 2014): 96–102. http://dx.doi.org/10.4028/www.scientific.net/amm.574.96.

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Selective Catalytic Reduction system (SCR) has made great contributions to diesel engine NOx control technology. The gas flow condition in exhaust pipe has a great effect on catalytic reduction reaction of SCR, especially the airflow through carriers. In this paper, CFD technology was used to simulate the internal flow field, and analyze the gas flow uniformity, which would give us reasonable suggestions to optimize the structure of SCR-Exhaust aftertreatment system.

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Kachel, Krzysztof, Dietmar Siche, Sebastian Golka, Petr Sennikov, and Matthias Bickermann. "FTIR exhaust gas analysis of GaN pseudo-halide vapor phase growth." Materials Chemistry and Physics 177 (July 2016): 12–18. http://dx.doi.org/10.1016/j.matchemphys.2016.03.010.

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22

Li, Youyi, and Tianhao Tang. "Performance Analysis and Optimization of a Series Heat Exchangers Organic Rankine Cycle Utilizing Multi-Heat Sources from a Marine Diesel Engine." Entropy 23, no. 7 (July 16, 2021): 906. http://dx.doi.org/10.3390/e23070906.

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Organic Rankine Cycle (ORC) is an effective way to recycle waste heat sources of a marine diesel engine. The aim of the present paper is to analyze and optimize the thermoeconomic performance of a Series Heat Exchangers ORC (SHEORC) for recovering energy from jacket water, scavenge air, and exhaust gas. The three sources are combined into three groups of jacket water (JW)→exhaust gas (EG), scavenge air (SA)→exhaust gas, and jacket water→scavenge air→exhaust gas. The influence of fluid mass flow rate, evaporation pressure, and heat source recovery proportion on the thermal performance and economic performance of SHEORC was studied. A single-objective optimization with power output as the objective and multi-objective optimization with exergy efficiency and levelized cost of energy (LCOE) as the objectives are carried out. The analysis results show that in jacket water→exhaust gas and jacket water→scavenge air→exhaust gas source combination, there is an optimal heat recovery proportion through which the SHEORC could obtain the best performance. The optimization results showed that R245ca has the best performance in thermoeconomic performance in all three source combinations. With scavenge air→exhaust, the power output, exergy efficiency, and LCOE are 354.19 kW, 59.02%, and 0.1150 $/kWh, respectively. Integrating the jacket water into the SA→EG group would not increase the power output, but would decrease the LCOE.

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Chin, W. W., and M. A. El-Masri. "Exergy Analysis of Combined Cycles: Part 2—Analysis and Optimization of Two-Pressure Steam Bottoming Cycles." Journal of Engineering for Gas Turbines and Power 109, no. 2 (April 1, 1987): 237–43. http://dx.doi.org/10.1115/1.3240030.

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Results of a study for selecting the optimum parameters of a dual-pressure bottoming cycle as a function of the gas turbine exhaust temperature are presented. Realistic constraints reflecting current technological practice are assumed. Exergy analysis is applied to quantify all loss sources in each cycle. Compared to a single pressure at typical exhaust gas temperatures the optimized dual-pressure configuration is found to increase steam cycle work output on the order of 3 percent, principally through the reduction of the heat transfer irreversibility from about 15 to 8 percent of the exhaust gas energy. Measures to further reduce the heat transfer irreversibility such as three-pressure systems or use of multicomponent mixtures can therefore only result in modest additional gains. The results for the efficiency of optimized dual-pressure bottoming cycles are correlated against turbine exit temperature by simple polynomial fits. Sensitivity of the results to variations in the constraint envelope are presented.

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Du, Ji Jun, Ping Zeng, Hong Yan Long, and Fan Zhang. "The Study on the New Technology of Exhaust Gas Cascade Utilization from Electrolytic Aluminum Industry." Advanced Materials Research 1010-1012 (August 2014): 891–94. http://dx.doi.org/10.4028/www.scientific.net/amr.1010-1012.891.

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With the development of electrolytic aluminum in our country, sulphur content in aluminum anode increased year by year, thus there is the risk of SO2 discharge over standard in exhaust gas treatment in electrolytic aluminum industry. Further, the waste heat from exhaust gas of electrolytic aluminum has not been made full use at present. It is necessary to development new exhaust gas treatment and utilization technology. In this study, a scheme about electrolytic aluminum exhaust gas cascade utilization has been proposed according to the characteristics of electrolytic aluminum exhaust gas. The electrolytic aluminum exhaust gas after dry treatment could be sent to power plant boiler as combustion air, as the discharge of electrolytic aluminum exhaust gas and air pollutants could be decreased greatly. After the comparison of techno-economic analysis, the discharge by the scheme of cascade utilization was less than that with desulfurization, with more economic benefit. Thus it is worth to be extended, since the scheme of electrolytic aluminum exhaust gas cascade utilization showed good techno-economy.

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Kumar, Mukul, and Randip Das. "Experimental analysis of absorption refrigeration system driven by waste heat of diesel engine exhaust." Thermal Science 23, no. 1 (2019): 149–57. http://dx.doi.org/10.2298/tsci160311003k.

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This work presents an experimental study of an ammonia-water absorption refrigeration system using the exhaust of an internal combustion engine as energy source. The exhaust gas energy availability, the performance of the absorption refrigeration system and the engine performance are evaluated. A commercial turbocharged Diesel engine has been tested in a bench test dynamometer, with the absorption refrigeration system adapted to the exhaust system. The maximum COP obtained from the refrigeration system is 0.136 and it has been shown that heat energy available with exhaust gas is capable of producing sufficient cooling capacity for air conditioning the vehicle without requiring any energy input from the engine.

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Bartlett, H., and R. Whalley. "Modelling and analysis of variable geometry exhaust gas systems." Applied Mathematical Modelling 22, no. 8 (August 1998): 545–67. http://dx.doi.org/10.1016/s0307-904x(98)10056-2.

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ITO, Masaki, Ryusuke YASUDA, and Atumasa YOSHIDA. "A Diffusion Analysis of Exhaust Gas from Moving Vehicle." Proceedings of Conference of Kansai Branch 2003.78 (2003): _13–19_—_13–20_. http://dx.doi.org/10.1299/jsmekansai.2003.78._13-19_.

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Talmon-Gros, Dietmar, Bernhard Huurdeman, Bernhardt Lüddecke, and Dietmar Filsinger. "Analysis of Components for Low-Pressure Exhaust Gas Recirculation." MTZ worldwide 75, no. 3 (March 2014): 20–25. http://dx.doi.org/10.1007/s38313-014-0029-8.

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Ridwan, Ade, Heru Nurasa, and Mas Halimah. "IMPLEMENTASI KEBIJAKAN PENANGANAN EMISI GAS BUANG DI KABUPATEN BANDUNG." Responsive 3, no. 4 (July 10, 2021): 197. http://dx.doi.org/10.24198/responsive.v3i4.32246.

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Pelaksanaan pengujian emisi gas buang pada kendaraan bermotor diperoleh gejala-gejala berdasarkan observasi bahwa pelaksanaan uji emisi gas buang di Kabupaten Bandung sangat jarang dilakukan, banyaknya kendaraan bermotor jika diamati mengeluarkan asap dari knalpotnya yang menandakan tingginya pencemaran udara, dan uji emisi gas buang hanya dilaksanakan pada kendaraan tertentu khususnya berkaitan dengan emisi gas buang yang sudah memasukkan prosedur pengujian emisi gas buang kendaraan. Berdasarkan fenomena tersebut, tujuan penelitian ini yaitu untuk menganalisis dan mengetahui implementasi kebijakan penanganan emisi gas buang yang dilakukan Dinas Perhubungan Kabupaten Bandung. Teori yang digunakan sebagai pedoman penelitian adalah teori implementasi kebijakan. Sesuai dengan karakteristik penelitian, pendekatan penelitian ini menggunakan studi metode penelitian kualitatif dengan desain deskriptif objek penelitian di dinas Perhubungan Kabupaten Bandung , adapun pengumpulan data dilakukan adalah studi kepustakaan dan studi lapangan seperti observasi dan wawancara. Sementara pengumpulan data sekunder dilakukan pengolahan literatur, dokumen, perundang-undangan serta hasil penelitian terdahulu. Analisis data yang digunakan adalah triangulasi data hasil wawancara serta membandingkan wawancara dengan isi dokumen yang berkaitan. The implementation of exhaust emission testing in motorized vehicles shows symptoms based on the observation that the implementation of exhaust emission tests in Bandung Regency is very rarely carried out, the number of motorized vehicles that when observed emits smoke from their exhausts which indicates high air pollution, and exhaust emission tests are only carried out in certain vehicles, in particular with regard to exhaust gas emissions that have included the vehicle exhaust emission testing procedure.Based on this phenomenon, the purpose of this study is to analyze and determine the implementation of exhaust gas emission management policies carried out by the Bandung Regency Transportation Agency. The theory used as a research guide is the theory of policy implementation. In accordance with the characteristics of the research, this research approach uses qualitative research methods with descriptive design, while data collection is carried out in the form of library research and field studies such as observations and interviews. Meanwhile, secondary data collection is carried out by processing literature, documents, legislation and the results of previous research. The data analysis used was triangulation of interview data and comparing interviews with the contents of related documents

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HE, Lin-Jian, hiroyuki KOSAKI, and Atsumu TEZAKI. "1007 Analysis of Compression Ignition of Hydrocarbons Using Exhaust Gas Analysis." Proceedings of Conference of Hokuriku-Shinetsu Branch 2010.47 (2010): 359–60. http://dx.doi.org/10.1299/jsmehs.2010.47.359.

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PUZDROWSKA, Patrycja. "Identification of damages in the inlet air duct of a diesel engine based on exhaust gas temperature measurements." Combustion Engines 177, no. 2 (May 1, 2019): 108–14. http://dx.doi.org/10.19206/ce-2019-219.

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The temperature of the exhaust gas of a diesel piston engine, measured in the characteristic control sections of its thermo-flow system, can be a valuable source of diagnostic information about the technical condition of the elements limiting the working spaces thus separated, including the turbocharging system, but also its fuel supply system and replacement of the medium. In standard marine engine measurement systems equipped with an impulse turbocharging system, the exhaust gas temperature is measured at the outlet of individual cylinders and before and after the turbocharger turbine, using traditional thermocouples with high measurement inertia (time constant of tenths of a second and more). This means that for further diagnostic analyses, the average value of the periodically changing temperature of the exhaust stream leaving individual engine cylinders, the exhaust stream in the collective duct feeding the turbine and the exhaust stream in the exhaust duct of the turbine is used. This article proposes a new approach to the issue of diagnostic informationiveness of the exhaust gas temperature of a diesel engine, extending its observations with the dynamics of changes in the duration of one working cycle. The aim of the tests carried out on the laboratory stand of Farymann Diesel engine type D10 was to determine the diagnostic relations between the loss of permeability of the inlet air channel filter baffle and selected standards of the quick-changing signal of the exhaust gas temperature. On the basis of the calculations carried out, the following dynamic features of the recorded signal were determined: maximum amplitude of instantaneous exhaust gas temperature values (peak-to-peak value), its rate of increase and decrease, and the specific enthalpy of exhaust gases within one engine work cycle. Comparative analysis of numerical data characterizing the recorded quick-changing exhaust gas temperature courses clearly indicates obvious thermodynamic and energy consequences of partial loss of flow capacity of the air channel supplying the combustion chamber of the test engine. A further development of the experimental test programme is foreseen in order to determine a diagnostic matrix to support the diagnostic inference about the technical condition of the diesel engine on the basis of measurements and analysis of the quick-changing exhaust gas temperature.

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Wdowin, Magdalena, Mariusz Macherzyński, Rafał Panek, Mateusz Wałęka, and Jerzy Górecki. "Analysis of selected mineral and waste sorbents for the capture of elemental mercury from exhaust gases." Mineralogia 51, no. 1 (January 1, 2020): 17–35. http://dx.doi.org/10.2478/mipo-2020-0003.

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Abstract Several mineralogically, chemically and texturally diverse minerals and waste materials were selected for the testing of elemental mercury capture in exhaust gas, namely tyre char resulting from the burning of pyrolytic rubber tyres, class C fly ash, mesoporous material type MCM-41 and glauconite. Each material’s mineralogical, chemical and textural characteristics were explored. In order to conduct experiments in conditions similar to those during the contact of sorbent with real coal exhaust fumes at a temperature of about 110-120°C, the experiments were carried out using a test device consisting of a furnace for burning powdered coals, a thermostatic cage for sorbent reactors and mercury gas analysers, which are able to measure and compare the effects of individual sorbents with exhaust gas. The study found that the best results for mercury sorption in the exhaust atmosphere were obtained for class C ash resulting from brown coal combustion.

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Kim, Jaeheun, and Choongsik Bae. "Emission reduction through internal and low-pressure loop exhaust gas recirculation configuration with negative valve overlap and late intake valve closing strategy in a compression ignition engine." International Journal of Engine Research 18, no. 10 (February 1, 2017): 973–90. http://dx.doi.org/10.1177/1468087417692680.

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An investigation was carried out to examine the feasibility of replacing the conventional high-pressure loop/low-pressure loop exhaust gas recirculation with a combination of internal and low-pressure loop exhaust gas recirculation. The main objective of this alternative exhaust gas recirculation path configuration is to extend the limits of the late intake valve closing strategy, without the concern of backpressure caused by the high-pressure loop exhaust gas recirculation. The late intake valve closing strategy improved the conventional trade-off relation between nitrogen oxides and smoke emissions. The gross indicated mean effective pressure was maintained at a similar level, as long as the intake boosting pressure kept changing with respect to the intake valve closing timing. Applying the high-pressure loop exhaust gas recirculation in the boosted conditions yielded concern of the exhaust backpressure increase. The presence of high-pressure loop exhaust gas recirculation limited further intake valve closing retardation when the negative effect of increased pumping work cancelled out the positive effect of improving the emissions’ trade-off. Replacing high-pressure loop exhaust gas recirculation with internal exhaust gas recirculation reduced the burden of such exhaust backpressure and the pumping loss. However, a simple feasibility analysis indicated that a high-efficiency turbocharger was required to make the pumping work close to zero. The internal exhaust gas recirculation strategy was able to control the nitrogen oxides emissions at a low level with much lower O2 concentration, even though the initial in-cylinder temperature was high due to hot residual gas. Retardation of intake valve closing timing and intake boosting contributed to increasing the charge density; therefore, the smoke emission reduced due to the higher air–fuel ratio value exceeding 25. The combination of internal and low pressure loop loop exhaust gas recirculation with late intake valve closing strategy exhibited an improvement on the trade-off relation between nitrogen oxides and smoke emissions, while maintaining the gross indicated mean effective pressure at a comparable level with that of the high-pressure loop exhaust gas recirculation configuration.

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Song, Sheng Wei, Zi Peng Wang, and Chen Sheng Yang. "Analysis of Y Type Branch Pipe Exhaust Ventilation Flow Characteristics." Applied Mechanics and Materials 556-562 (May 2014): 1054–58. http://dx.doi.org/10.4028/www.scientific.net/amm.556-562.1054.

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In order to study the internal gas flow of Y type branch pipes in the exhaust ventilation conditions, the branch pipe is simulated by using FLUENT software. Combined with experimental results, comparatively analyze exhaust ventilation pressure, velocity and vortex flow of the branch pipe. The results show that simulation and experimental data consistent overall trend, the difference is less than 8%, the main entrance pressure of the branch pipeline decreases with the width of the leakage increasing, leakage width of 0 mm, 1 mm, 2 mm cases, there is vortex tube, and valve and the main ventilation pipe case gas exchange occurs when no leakage, this study provides a theoretical and practical basis for further analysis of branch pipe exhaust ventilation.

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Ga, Bui Van, and Bui Thi Minh Tu. "Soot Emission Analysis in Combustion of Biogas Diesel Dual Fuel Engine." International Journal of Environmental Science & Sustainable Development 2, no. 1 (June 30, 2017): 67. http://dx.doi.org/10.21625/essd.v2i1.55.

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Soot emission in bio-gas diesel dual fuel engine has been analyzed by numerical simulation with 2-stape soot formation model of Magnussen. The result shows that soot formation mainly occurred in diffusion combustion phase of diesel pilot jet. Soot peak value is proportional to the first peak value of ROHR, and is found at around the same crank angle position with the second peak of ROHR. At a given engine speed and diesel content in the fuel, the highest soot peak value is obtained with slightly rich mixture whereas soot concentration in exhaust gas increases monotonically with increasing equivalence ratio. Increasing diesel content in the fuel increases both soot peak value and soot concentration in exhaust gas. At a given equivalence ratio and diesel content in the fuel, engine speed has a moderate effect on soot formation rate but a significant effect on soot combustion rate. Soot concentration in the exhaust gas practically vanished as equivalence ratio under 0.98 and 15% diesel content in the fuel. This is the ideal operation regime of bio-gas diesel dual fuel engine in view of soot emission control.

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Zhang, Wei Yi, Yong Ming An, Shu Feng Wang, Hang Wu, and Jun Yong Lei. "Pipeline Vibration Analysis and Control for the First Booster of Ethylene." Applied Mechanics and Materials 313-314 (March 2013): 777–84. http://dx.doi.org/10.4028/www.scientific.net/amm.313-314.777.

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For existing local severe vibration problems on the pipeline system of conveying ethylene booster in ethylene cracking system of a petrochemical company, the detailed analysis by CAESARII was carried out to its pipeline system natural frequency and vibration modal; The flow of ethylene gas within the booster pipeline from the suction pipe to exhaust pipe inside including the buffer tank was analyzed using fluid analysis software--FLUENT, the pressure field and velocity field of the flow was obtained. According to the law of the suction and exhaust valve open-closed mouth, dynamic boundary conditions was set on the suction valve and exhaust valve. The ethylene flow non-steady-state analysis calculations was carried out within the pipeline from the suction tube inlet to suction valve and from the exhaust valve to the exhaust tube outlet , the law of the pressure pulsation frequency response was obtained on the suction pipe inlet and the exhaust pipe outlet. The results show that ethylene gas pipeline pressure pulsation frequency response was basically equal to the frequency of the suction and exhaust valve open-closed mouth; The actual pipe vibration modals of the pipeline system on the scene and the pipeline vibration modals a few corresponding to the natural frequencies of the pipeline system close to the pulsation frequency in flow pressure are very similar, indicating that the vibration of the pipeline system is due to the pressure pulse frequency of the ethylene gas internal pipeline close to the natural frequency of the local pipeline, caused due to local resonance. Changing the form of hangers in vibration system can change the natural frequency of pipeline to avoid resonance. Tube fluid dynamic pressure caused by the stress of the pipeline is limited and will not cause damage to the tube material. Mass flow rate does not match with the tube diameter will cause too large flow velocity, the inertia force caused by the larger on the suction valve and exhaust valve before and after, resulting in the forced vibration of the compressor body.

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Siedlecki, Maciej, Paweł Fuć, Barbara Sokolnicka, and Natlia Szymlet. "Analysis of the effect of exhaust aftertreatment systems con-figurations on the temperature measured in the exhaust sys-tem of a spark-ignition engine." AUTOBUSY – Technika, Eksploatacja, Systemy Transportowe 24, no. 6 (June 30, 2019): 263–67. http://dx.doi.org/10.24136/atest.2019.161.

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The article discusses the effect of exhaust aftertreatment systems configuration on the resulting exhaust gas temperature at selected points of the exhaust system. Catalytic reactors and particle filters must reach a specific temperature in order to effectively perform their functions. The temperature they obtain decreases with the increasing distance from the exhaust manifold, as the gases cool along the way. The performed research consisted of measuring the exhaust gas temperature in various places of the exhaust system in simulated driving conditions mapped on the dynamic engine brake station in the aspect of using a particulate filter and its resulting operating efficiency due to the temperature. Measuring the temperature using thermo-couples allowed to assess the probability of achieving full operation of the filters during urban and extra-urban exploitation in a simulation of real driving conditions.

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Liu, Xin Jian, Xiu Hua Kong, and Wei Ren. "Available Heat Energy Analysis from Exhaust of Incinerator on Ship." Applied Mechanics and Materials 229-231 (November 2012): 588–91. http://dx.doi.org/10.4028/www.scientific.net/amm.229-231.588.

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Incinerator is an important prevent pollution equipment on ship, usually it is used to deal with some combustible rubbish, such as waste food waste, oil dishcloth, especially dirty oil and oil sludge. Through analyze the quantity of dirty oil and oil sludge that produced on ship, and calculate the exhaust gas heat energy that can be used from incinerator, the exhaust gas heat energy has plenty of energy from incinerator, it should be utilized and it will be a new way that to improve ship energy utilization efficiency.

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Bibin, C., and P. Seenikannan. "Experimental Analysis of Energy Recovery from an Internal Combustion Engine Exhaust Using Rankine Cycle." Advanced Materials Research 768 (September 2013): 158–63. http://dx.doi.org/10.4028/www.scientific.net/amr.768.158.

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For many decades all major conservation bodies have realized the need to conserve our valuable fuel and power sources. The increased level of consumption of fuel and power results in carbon-di-oxide emissions to environment which results in the depletion of ozone layer leading to global warming. As a result, many ways of utilizing renewable fuel and power sources are developing with solar energy and waste heat recovery applications. Most of the process and industries have large capacity Diesel Generating (DG) set. The exhaust gas of such a DG set carries a lot of heat and it goes waste if it is not utilized properly. Energy recovery from engine exhaust is one of the energy saving methods in engines. By using energy recovery techniques, waste heat energy can be saved, emissions can be reduced and thermal efficiency of the engine is increased. This paper discusses about the exhaust gas energy recovery from engine exhaust using Rankine cycle and thermodynamic properties of the working fluids. The heat energy recovered from the engine exhaust can be utilized for various sources.

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Pranoto, Hadi, Wiwit Suprihatiningsih, Muhammad Idil Fadil, and Supaat Zakaria. "Opacity Results Diesel Fuel: Bio Solar, Dexlite, Dex and Analysis Theoretical Flammability Limit." International Journal of Advanced Technology in Mechanical, Mechatronics and Materials 1, no. 1 (March 30, 2020): 18–25. http://dx.doi.org/10.37869/ijatec.v1i1.10.

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Each mixture of fuel and gas has a different flame speed. Gas will only burn at a suitable percentage of air and produce different exhaust gas opacity, opacity is a ratio of the rate of light absorption by smoke expressed in units of percent. This study aims to theoretically analyze the relationship between the flammability limit and the variation of fuel which has a different setana number associated with the exhaust gas opacity value of the engine performance test equipment. The machine performance test equipment used is the L300 engine. The methodology used is the testing of exhaust gas opacity using the Koeng OP-201 opacity meter and theoretically analyzed its relationship with the bio solar, dexlite and pertamina dex flame limits. The results of this study found that bio solar has an upper flame limit of 6.65%, a lowerflame limit of 0.53%, and an average opacity value of 12.1%. Dexlite has an upper limit of 6.70%, a lower limit of 0.53%, and an average opacity value of 10.5%. Pertamina dex has an upper limit of 6.68%, a lower limit of 0.53%, and an average opacity value of 9.21%.

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Peter, Sahupala, Perenden Daniel, and Wely Wullur Christian. "The Design Of Grain Drying Oven Using Residual Exhaust Gas From Diesel Engine With Heat Transfer Analysis." E3S Web of Conferences 73 (2018): 05028. http://dx.doi.org/10.1051/e3sconf/20187305028.

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The drying process plays an important role in the preservation of agricultural products. To this day, the drying process of rice grains harvested by the farmers in Semangga District, Merauke Regency, has always used sunlight. However, during rainy season, the farmers cannot dry their grains, and if such thing happens for a long time, it will cause decayed grains. The drying characteristics of a material are necessary in designing the dryers in use. The method used in this research was the design of grain dryers, which took the form of heating oven, by utilizing heat from the residual exhaust gas of diesel engine. The exhaust gas coming out of the exhaust manifold would be flowed through the heating pipe in the oven heating chamber, then through the convective heat transfer process, followed by conductive heat transfer, and then the heat flow conduction would be transmitted to the drying chamber. The objective of this research was to design grain dryers by using Diesel engine's residual exhaust gas, and to calculate the efficiency of grain dryer using heat transfer analysis. The bulk gas temperature in the exhaust gas section for hot fluid in the pipe is 371.55 K at a motor rotation of 2400 rpm, with the flow rate of the incoming exhaust gas heat mass of 0.01798031 kJ/s. The velocity of incoming exhaust gas mass is 36.75 kg/s, with the comprehensive heat transfer coefficient on the inlets of 92.7334404 W/ m2.oC. The heat transfer in the air section/ fluid section in the inner pipe is 351.1351 K, while the convective heat transfer coefficient in exit pipe is 8.010580984 W/m2.oC, thus obtaining Comprehensive heat transfer of 40.2312698 W/ m2.oC. The logarithmic mean temperature difference (LMTD) in the evaporator is 35.69590751oC with total heat transfer area of 084178 m2. With 2400 rpm motor rotation, the total heat transfer at the heat exchanger, which is the usable maximum heat, is equal to 0.226296111 kW; while the effectiveness of heat exchanger is at 60.95%. The energy used to evaporate the water and the amount of convective heat transfer from dry air to the product are 0.03696 kW, while the amount of air energy used is 0.05150 kW, obtaining the efficiency of the drying machine at 71%.

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Mockus, Saulius, Jonas Sapragonas, Agnius Stonys, and Saugirdas Pukalskas. "ANALYSIS OF EXHAUST GAS COMPOSITION OF INTERNAL COMBUSTION ENGINES USING LIQUEFIED PETROLEUM GAS." JOURNAL OF ENVIRONMENTAL ENGINEERING AND LANDSCAPE MANAGEMENT 14, no. 1 (March 31, 2006): 16–22. http://dx.doi.org/10.3846/16486897.2006.9636874.

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The problems of implementation of liquefied petroleum gas (LPG) supply systems are related with the fact that they are alternative systems used in engines constructed and optimized for work with other kinds of fuel. So assemblers of the systems have to evaluate power losses and at the same time ecological requirements. The experiment is devoted to the analysis of gas composition of engines working at different modes in order to specify the particularity of LPG system tuning and to obtain data for the evaluation of environmental pollution by numerical car dynamics models. It is estimated that the algorithms of current LPG systems balance between ecological requirements and optimization of external characteristics of engines, and the gas systems are characterized by a great inertia. Also, it is determined that more precise tuning algorithms must be constructed, and more tuning points and tuning, when an engine works in standard modes, must be foreseen.

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Wu, Ji, Shu Lin Duan, Zhan Hua Wu, Hui Xing, and Wen Chun Zhang. "Analysis on Sealing and Deformation of Exhaust Valve Housing of Marine Diesel Engine." Advanced Materials Research 690-693 (May 2013): 1887–90. http://dx.doi.org/10.4028/www.scientific.net/amr.690-693.1887.

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MAN Diesels 6S50MC-C disel is a two-stroke marine diesel engine. Preload of the exhaust valve component is applied in four bolts. The preload of bolts can improve the fatigue strength of the exhaust component. In addition, the bolt pretension ensure the sealing in the maximum firing pressure. Using of simulation method, the displacement and deformation of exhaust valve component are analyzed when the maximum firing pressure and preload are applied. By analysis of the deformation of the exhaust valve housing under different preload force, the deformation of exhaust valve housing increase with the increaseing of preload. The maximum total deformation is 0.40mm in the preload of 720KN. The maximum deformation occurs in the region near the bolt in the side of exhaust gas outlet. The deformation in the direction of Y-axis of exhaust valve housing is along the Y-axis opposite direction when the preload is greater than 540KN. This indicates that the exhaust valve seal well. The sealing and deformation of the exhaust valve component meets the desgin requirement.

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Wibowo, Elham Prasetyo, Elvira Zondra, and Usaha Situmeang. "Studi Penggunaan Variable Speed Drive Untuk Pengaturan Kecepatan Motor Exhaust Fan Pada Dyno Test Room PT. Trakindo Utama Pekanbaru." JURNAL TEKNIK 12, no. 2 (November 20, 2018): 85–96. http://dx.doi.org/10.31849/teknik.v12i2.1755.

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ABSTRAK Exhaust fan adalah peralatan berupa sudu-sudu yang berputar dan memanfaatkan gaya sentrifugal untuk membuang exhaust gas hasil pembakaran bahan bakar solar engine diesel pada saat dilakukan tes pembebanan penuh. Dengan exhaust fan, gas karbondioksida yang dihasilkan oleh engine diesel memungkinkan untuk dibuang dengan cepat sehingga tidak memenuhi ruangan dan membahayakan bagi setiap karyawan. Pengoperasian exhaust fan dilakukan sesuai jadwal pengetesan engine. Exhaust fan tersebut digerakkan oleh motor induksi 3 phasa 30 kW dengan putaran nominal secara konstan. Pada saat pengetesan engine dengan nilai aliran gas buang yang rendah, exhaust fan tetap dioperasikan dengan kecepatan nominal. Operasional motor exhaust fan dengan kecepatan konstan seperti ini akan mengakibatkan konsumsi daya listrik yang relatif tinggi dari pada motor dengan kecepatan berubah-ubah sesuai kebutuhan. Sebagai pertimbangan hasil perhitungan untuk engine C 18 Caterpillar kapasitas 831 hp yang sebelumya membutuhkan operasional exhaust fan dengan daya 24,7927 kW nilai sama untuk semua model engine, setelah penggunaan VSD dapat dikurangi sebesar 14,35 % menjadi 21,2343 kW saja. Penelitian ini bertujuan mendapatkan probabilitas hubungan antara konsumsi energi listrik, frekuensi pada variable speed drive, putaran motor induksi dan nilai aliran udara pada cerobong exhaust fan. Nilai aliran udara exhaust fan tersebut akan disesuaikan dengan nilai aliran gas pembakaran yang dihasilkan oleh engine. Analisa optimasi motor exhaust fan ini sedianya akan menggunakan Matematic Analysis dan simulasi menggunakan simulink matlab sehingga diharapkan ada solusi untuk melakukan penghematan terhadap konsumsi daya motor, kemudian bisa diterapkan dalam semua pengoperasian motor yang ada di perusahaan. Kata kunci : variable speed drive, motor induksi, exhaust fan ABSTRACT The exhaust fan is a rotary blade device which produces centrifugal force to remove exhaust gas from diesel fuel combustion during a full load test. With exhaust fans, the carbondioxide gases that generated by the diesel engine allows to be disposed quickly so that it does not fill the room and harm to every employee. The operation of exhaust fan is carried out according to the engine test schedule. The exhaust fan is driven by a 3 phase induction motor of 30 kW with constant rotation. When testing the engine with a low Exhaust Gas flow value, the exhaust fan remains operated at rated speed. Operational exhaust fan with a constant speed like this will result in relatively high power consumption of the motor with the speed of change as needed. Considering the calculation results for C 18 engine Caterpillar capacity of 831 hp which previously required operational exhaust fan with 24,7927 kW of equal value for all engine models, after the use of VSD can be reduced by 14.35% to 21.2343 kW only. This study aims to obtain the probability of relationship between electrical energy consumption, frequency on the variable speed drive, induction motor rotation and the value of air flow in the exhaust fan chimney. The value of the exhaust fan air flow will be adjusted to the combustion gas flow value generated by the engine. The optimization analysis of this motor exhaust fan will be using Matematic Analysis and simulation using matlab simulink so it is expected there is a solution to make savings to motor power consumption, then it can be applied in all the motor operation in the company. Keywords: variable speed drive, induction motor, exhaust fan

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BIENIEK, Andrzej, Jarosław MAMALA, Mariusz GRABA, and Krystian HENNEK. "Impact of EGR control at in-cylinder pressure and ecological properties of CI off-road vehicle engine." Combustion Engines 170, no. 3 (August 1, 2017): 88–95. http://dx.doi.org/10.19206/ce-2017-314.

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An attempt has been made to clarify the effect of wide-ranging control of the exhaust gas recirculation system on the cylinder pressure and ecological engine performance. This publication contains the results of tests performed on the CI (compression ignition) engine of the off-road vehicle mounted on the test bench. The study was based on advanced EGR control with a proportional valve and a very efficient exhaust gases cooling system. Analysis of the test results is based on the cylinder pressure and the concentration of NOx and PM components at exhaust gases. The study included the influence of the exhaust gas recirculation system control on parameters such as differential pressure, MBF, and relative NOx and PM emissions. As demonstrated by the analysis conducted, the EGR valve control method and the exhaust gas cooling intensity significantly affect the cylinder pressure and its ecological performance.

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Kusumawati, Galuh Indri, R. A. Murti Kusuma Wirasti, and Dwi Kusumawardani. "Needs Analysis for the Development of a Training Module for Hypercontent Examination Emission Inspection at the Ministry of Transportation." Journal of Education Research and Evaluation 4, no. 4 (November 9, 2020): 322. http://dx.doi.org/10.23887/jere.v4i4.29550.

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The main factor of air pollution in Indonesia is motorized vehicles. Motorized vehicles operating on the road will produce exhaust gas emissions which result in air pollution. In overcoming exhaust gas emissions in vehicles, the Ministry of Transportation conducts training for exhaust emission inspection, and conducts training at one of the technical implementation units, namely the Indonesian Land Transportation Polytechnic (PTDI) STTD. The purpose of this study was to conduct a needs analysis to develop a hyper content learning module for training on exhaust emission examinations, using the R&D (research and Development) method using the Derek Rowntree model. The hyper content module is a module that combines hypertext, hyperlinks, and hypermedia, and the media used in the form of video, QR code, YouTube, and cloud computing. With the development of the hyper content module, it is possible to improve the understanding and learning outcomes of training participants in studying exhaust emissions from vehicles when compared to conventional learning.

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Kasama, Shunji, Hisatsugu Kitaguchi, Yuichi Yamamura, Kazuomi Watanabe, and Akifumi Umezu. "Analysis of Exhaust Gas Visibility in Iron Ore Sintering Plant." ISIJ International 46, no. 7 (2006): 1027–32. http://dx.doi.org/10.2355/isijinternational.46.1027.

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Shareef, Sk Mohammad, A. L. N. Arun Kumar, and T. Venkatesh. "CFD Analysis of DI Diesel Engine using Exhaust Gas Recirculation." CVR Journal of Science & Technology 18, no. 1 (June 1, 2020): 132–37. http://dx.doi.org/10.32377/cvrjst1823.

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Wang, Qianchun, and Jing Xu. "Analysis and Improvement of Screw Compressed Air Exhaust Gas Temperature." IOP Conference Series: Earth and Environmental Science 233 (February 26, 2019): 042043. http://dx.doi.org/10.1088/1755-1315/233/4/042043.

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Yen, Shun-Chang, Yu-Zong Huang, and Kuo-Ching San. "Thermal characteristics and exhaust-gas analysis behind bluff-body frustums." Fuel 159 (November 2015): 519–29. http://dx.doi.org/10.1016/j.fuel.2015.07.021.

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Journal articles on the topic 'Exhaust gas analysis'

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