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Artículos de revistas sobre el tema "C.I. ENGINE"

Autor: Grafiati
Publicado: 11 de septiembre de 2023

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1

Jamil, Abdullah, Masri B. Baharom, and Abd Rashid B. Abd Aziz. "In-Cylinder Cold-Flow Analysis - ‘A Comparison of Crank-Slider Engine and Crank-Rocker Engine’." Journal Européen des Systèmes Automatisés​ 55, no. 2 (2022): 229–36. http://dx.doi.org/10.18280/jesa.550210.

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Researchers and engineers are continuously working to improve the overall efficiency of internal combustion engines by modifying the engine designs and configurations. As new engine designs are introduced, the in-cylinder flow behaviour becomes more and more complex. The maximum output and efficiency that can be achieved from a single cylinder engine depends upon the amount of air entrapped in the combustion chamber during intake stroke. A novel crank-rocker (C-R) engine was designed and fabricated in Universiti Teknologi PETRONAS (UTP), Malaysia and is currently under optimization phase. This
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2

Ji, Yan Ping, Ping Sun, and Si Bo Zhao. "Analysis of Temperature Field of High Speed Diesel Engine Parts and their Structural Optimization." Applied Mechanics and Materials 490-491 (January 2014): 1003–7. http://dx.doi.org/10.4028/www.scientific.net/amm.490-491.1003.

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The analysis of structure and performance of internal combustion engine is presented in this paper from the following two aspects: the thermal load of I. C. Engine and the thermal efficiency of diesel engines. Firstly, the thermal load of key parts of I. C. Engine as well as the evaluation parameters of which are introduced briefly. Furthermore, based on the factors influencing the heat transfer process of internal combustion engine, the current research situation of internal combustion engine work process and heat balance for combustion chamber components, and the whole engine using numerical
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3

Radchenko, Andrii, Dariusz Mikielewicz, Mykola Radchenko, Serhiy Forduy, Oleksandr Rizun, and Viktor Khaldobin. "Innovative combined in-cycle trigeneration technologies for food industries." E3S Web of Conferences 323 (2021): 00029. http://dx.doi.org/10.1051/e3sconf/202132300029.

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The majority of integrated energy systems (IES) for combined electricity, heat and refrigeration generation, or trigeneration, are based on gas engines. The fuel efficiency of gas engines are strictly influenced by intake air temperatures. Practically in all IES the absorption lithium-bromide chillers (ACh) are applied for conversing the heat removed from the engine into refrigeration in the form of chilled water. The peculiarity of trigeneration in food industries is the use of chilled water of about 12°C for technological needs instead of 7°C as typical for ACh. This leads to a considerable
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4

Radchenko, Andrii, Mykola Radchenko, Dariusz Mikielewicz, Anatoliy Pavlenko, Roman Radchenko, and Serhiy Forduy. "Energy Saving in Trigeneration Plant for Food Industries." Energies 15, no. 3 (2022): 1163. http://dx.doi.org/10.3390/en15031163.

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The trigeneration plants for combined cooling, heating, and electricity supply, or integrated energy systems (IES), are mostly based on gas reciprocating engines. The fuel efficiency of gas reciprocating engines depends essentially on air intake temperatures. The transformation of the heat removed from the combustion engines into refrigeration is generally conducted by absorption lithium-bromide chillers (ACh). The peculiarity of refrigeration generation in food technologies is the use of chilled water of about 12 °C instead of 7 °C as the most typical for ACh. This leads to a considerable coo
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5

Li, Yi, Zhihui Yuan, Yujie Li, and Jing Liu. "Factors influencing search engine usage behavior." Social Behavior and Personality: an international journal 46, no. 1 (2018): 1–10. http://dx.doi.org/10.2224/sbp.6211.

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We analyzed the effect of individual factors, contextual factors, and perception of search engine advertising on users' search engine usage behavior. The sample comprised 404 Chinese who used search engines in the context of their paid employment. Results showed that (a) perceived search skills and perceived search engine reliance significantly and positively impacted users' general search engine usage, (b) perceived advertising clutter reduced the beneficial effects of perceived search skills on users' general search engine usage, (c) users with higher perceived search engine reliance preferr
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6

Knauder, Christoph, Hannes Allmaier, David E. Sander, and Theodor Sams. "Investigations of the Friction Losses of Different Engine Concepts. Part 2: Sub-Assembly Resolved Friction Loss Comparison of Three Engines." Lubricants 7, no. 12 (2019): 105. http://dx.doi.org/10.3390/lubricants7120105.

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In this work, friction loss investigations and comparisons of three different four-cylinder engines for passenger car applications are presented, using a recently developed combined approach. By merging extensive experimental with reliable and predictive journal bearing simulation results, a sub-assembly-resolved friction loss analysis of the piston group, crankshaft journal bearings and valve train is conducted for all three engines. The engines have been chosen individually based on their specific power output and crank train geometry. The measurement program covers a wide range of correspon
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7

Albert K. Arkoh, Esther B. Kyere, and Isaac Edunyah. "Comparative analysis of engine running performance with and without thermostat." International Journal of Science and Research Archive 4, no. 1 (2021): 047–53. http://dx.doi.org/10.30574/ijsra.2021.4.1.0171.

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The rate of removal of internal combustion (IC) engine thermostat when engines are imported to Ghana and other part of African continent is alarming. Such phenomenon calls for an experiment to compare the performance of IC engines imported here in Ghana running with and without engine thermostat. The analysis was done by determine engine performance characteristic such as engine torque, indicated power (Ip), brake power (bp), frictional power (fp), fuel consumption, exhaust gas temperature (EGT) as well as exhaust emission at engine speed of 1500 rpm for engine running with thermostat (WT) and
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8

Galindo, José, Vicente Dolz, Javier Monsalve-Serrano, Miguel Angel Bernal Maldonado, and Laurent Odillard. "EGR cylinder deactivation strategy to accelerate the warm-up and restart processes in a Diesel engine operating at cold conditions." International Journal of Engine Research 23, no. 4 (2021): 614–23. http://dx.doi.org/10.1177/14680874211039587.

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The aftertreatment systems used in internal combustion engines need high temperatures for reaching its maximum efficiency. By this reason, during the engine cold start period or engine restart operation, excessive pollutant emissions levels are emitted to the atmosphere. This paper evaluates the impact of using a new cylinder deactivation strategy on a Euro 6 turbocharged diesel engine running under cold conditions (−7°C) with the aim of improving the engine warm-up process. This strategy is evaluated in two parts. First, an experimental study is performed at 20°C to analyze the effect of the
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9

Rubino, L., R. I. Crane, J. S. Shrimpton, and C. Arcoumanis. "An electrostatic trap for control of ultrafine particle emissions from gasoline-engined vehicles." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 219, no. 4 (2005): 535–46. http://dx.doi.org/10.1243/095440705x6668.

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Health concerns over ultrafine (< 100 nm) particles in the urban atmosphere have focused attention on measurement and control of particle number as well as mass. Gasoline-engined as well as diesel-engined vehicles are likely to be within the scope of future particulate matter (PM) emission regulations. As a potential option for after-treatment of PM emissions from gasoline engines, the trapping performance of a catalysed wire-cylinder electrostatic trap has been investigated, first in a laboratory rig with simulated PM and then in the exhaust of a direct injection spark ignition engine. In
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10

Seraj, Mohd, Syed Mohd Yahya, Irfan Anjum Badruddin, Ali E. Anqi, Mohammad Asjad, and Zahid A. Khan. "Multi-Response Optimization of Nanofluid-Based I. C. Engine Cooling System Using Fuzzy PIV Method." Processes 8, no. 1 (2019): 30. http://dx.doi.org/10.3390/pr8010030.

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Effective cooling of the internal combustion (I. C.) engines is of utmost importance for their improved performance. Automotive heat exchangers used as radiator with low efficiency in the industry may pose a serious threat to the engines. Thus, thermal scientists and engineers are always looking for modern methods to boost the heat extraction from the engine. A novel idea of using nanofluids for engine cooling has been in the news for some time now, as they have huge potential because of better thermal properties, strength, compactness, etc. Nanofluids are expected to replace the conventional
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11

Myers, Bradford A., Edward D. White, Jonathan D. Ritschel, and R. David Fass. "Quantifying the Effects of Aircraft Engine Upgrades on Operating and Support Costs." Optimizing Operations 28, no. 97 (2021): 320–43. http://dx.doi.org/10.22594/10.22594/dau.20-862.28.03.

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For fixed wing aircraft within the U.S. Air Force, Operating and Support (O&S) costs encompass a large portion of total life-cycle costs. O&S costs include fuel, maintenance, and engine upgrades. To the authors’ knowledge, no study to date has attempted to empirically quantify the realized effects of new aircraft engines on sustainment costs. Utilizing the Air Force Total Ownership Cost database, they focused on new engines appearing on the C-5s, C-130s, and C-135s. Although narrow in scope, results suggest newer engines have lower fuel costs. Maintenance costs for newer engines were n
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12

Kumbár, Vojtěch, Adam Polcar, and Jiří Čupera. "Rheological profiles of blends of the new and used motor oils." Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis 61, no. 1 (2013): 115–21. http://dx.doi.org/10.11118/actaun201361010115.

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The objective of this paper is to find changes of a rheological profile of the new engine oil if the used engine oil will be add. And also find changes of a rheological profile of the used engine oil if the new engine oil will be add. For these experiments has been created the blends of the new and the used engine oil. The temperature dependence of the density [kg.m−3] has been measured in the range of −10 °C and +60 °C. The instrument Densito 30PX with the scale for measuring engine oils has been used. The dynamic viscosity [mPa.s] has been measured in the range of −10 °C and +100 °C. The Ant
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13

Syaiful Rizal and Kartika Sekarsari. "Condition Monitoring Scheduled Oil Sample on Crane Machine Using the Fuzzy Logic Methode." Formosa Journal of Sustainable Research 2, no. 7 (2023): 1627–36. http://dx.doi.org/10.55927/fjsr.v2i7.5289.

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Maintenance of crane engines in the mining world is very much needed to maintain the engine in good condition and function when used. In crane engine maintenance management, a scheduled oil sample is a form of predictive engine maintenance by taking regular oil samples from the engine to analyze its content and quality in the laboratory. The Fuzzy Logic method used in this study aims to monitor the results obtained from the laboratory so that it can be recognized that the condition of the engine is still in excellent condition (eval A), the state of the engine is still good, and no action has
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14

Daminov, O., O. Khushnaev, A. Yangibaev, and G. Kucharenok. "IMPROVING THE PERFORMANCE INDICATORS OF DIESEL ENGINES BY ENHANCING THE COOLING SYSTEM." Technical science and innovation 2020, no. 1 (2020): 63–68. http://dx.doi.org/10.51346/tstu-01.20.1-77-0052.

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The article deals with the improvement of the performance of diesel engines by improving the cooling system. It is indicated that there is a number of problems that arise when converting an engine with spark ignition to natural gas. The increase of thermal stress of the engine is illustrated. As a result of researching of features of the parameters and characteristics of a gas-powered automobile engine and optimization of its temperature regime, a very actual scientific and practical task is determined. The engine with the spark ignition installed on the microbus working on the diesel and gas
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15

Zhao, Wei Guo, Ji Hong Dong, Wei Li, Hai Ping Wang, and Quan Feng Guo. "Research on Defect Detection Technology of C/C Composite." Advanced Materials Research 295-297 (July 2011): 264–69. http://dx.doi.org/10.4028/www.scientific.net/amr.295-297.264.

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Carbon matrix/Carbon fibre reinforced composite(C/C composite) has many special characteristics such as high strength, high elastic modulus, high temperature resistance and ablation resistance. So it is used to manufacture rocket engine nozzle in aerospace filed. But its security will be seriously effected during rocket engine working due to the manufacturing defects. Based on analyzing defect types and structure characteristic of C/C composite, the ultrasonic and infrared testing methods on C/C composite are further studied in this thesis. And effective defect detection has been achieved.
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16

Mahmoudzadeh Andwari, Amin, Apostolos Pesyridis, Vahid Esfahanian, Ali Salavati-Zadeh, and Alireza Hajialimohammadi. "Modelling and Evaluation of Waste Heat Recovery Systems in the Case of a Heavy-Duty Diesel Engine." Energies 12, no. 7 (2019): 1397. http://dx.doi.org/10.3390/en12071397.

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In the present study, the effects of Organic Rankine Cycle (ORC) and turbo-compound (T/C) system integration on a heavy-duty diesel engine (HDDE) is investigated. An inline six-cylinder turbocharged 11.5 liter compression ignition (CI) engine employing two waste heat recovery (WHR) strategies is modelled, simulated, and analyzed through a 1-D engine code called GT-Power. The WHR systems are evaluated by their ability to utilize the exhaust excess energy at the downstream of the primary turbocharger turbine, resulting in brake specific fuel consumption (BSFC) reduction. This excess energy is de
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17

Hsueh, Ming-Hsien, Chao-Jung Lai, Meng-Chang Hsieh, et al. "Effect of Water Vapor Injection on the Performance and Emissions Characteristics of a Spark-Ignition Engine." Sustainability 13, no. 16 (2021): 9229. http://dx.doi.org/10.3390/su13169229.

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The exhaust emissions from Internal Combustion Engines (ICE) are currently one of the main sources of air pollution. This research presented a method for improving the exhaust gases and the performance of a Spark-Ignition (SI) engine using a water vapor injection system and a Non-Thermal Plasma (NTP) system. These two systems were installed on the intake manifold to investigate their effects on the engine’s performance and the characteristics of exhaust emission using different air/fuel (A/F) ratios and engine speeds. The temperatures of the injected water were adjusted to 5 and 25 °C, using a
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18

Adebayo, A., and Omojola Awogbemi. "Effects of Fuel Additives on Performance and Emission Characteristics of Spark Ignition Engine." European Journal of Engineering Research and Science 2, no. 3 (2017): 30. http://dx.doi.org/10.24018/ejers.2017.2.3.289.

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This research investigated the effects of addition of ethanol to gasoline with the aim of improving the performance and emission characteristics of Spark Ignition (SI) engine. Four samples of gasoline-ethanol blend were prepared, namely 100% ethanol, 100% gasoline, 95% gasoline + 5% ethanol and 90% gasoline+10% ethanol, and were labeled sample A, B, C and D respectively. Physicochemical analysis was carried out on the four samples while sample B, C, and D were used to run a single cylinder, two stroke, air cooled SI engine to determine the performance characteristics of the engine at four engi
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19

Adebayo, A., and Omojola Awogbemi. "Effects of Fuel Additives on Performance and Emission Characteristics of Spark Ignition Engine." European Journal of Engineering and Technology Research 2, no. 3 (2017): 30–35. http://dx.doi.org/10.24018/ejeng.2017.2.3.289.

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This research investigated the effects of addition of ethanol to gasoline with the aim of improving the performance and emission characteristics of Spark Ignition (SI) engine. Four samples of gasoline-ethanol blend were prepared, namely 100% ethanol, 100% gasoline, 95% gasoline + 5% ethanol and 90% gasoline+10% ethanol, and were labeled sample A, B, C and D respectively. Physicochemical analysis was carried out on the four samples while sample B, C, and D were used to run a single cylinder, two stroke, air cooled SI engine to determine the performance characteristics of the engine at four engi
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20

Vos, Kalen R., Gregory M. Shaver, Mrunal C. Joshi, and James McCarthy. "Implementing variable valve actuation on a diesel engine at high-speed idle operation for improved aftertreatment warm-up." International Journal of Engine Research 21, no. 7 (2019): 1134–46. http://dx.doi.org/10.1177/1468087419880639.

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Aftertreatment thermal management is critical for regulating emissions in modern diesel engines. Elevated engine-out temperatures and mass flows are effective at increasing the temperature of an aftertreatment system to enable efficient emission reduction. In this effort, experiments and analysis demonstrated that increasing the idle speed, while maintaining the same idle load, enables improved aftertreatment “warm-up” performance with engine-out NOx and particulate matter levels no higher than a state-of-the-art thermal calibration at conventional idle operation (800 rpm and 1.3 bar brake mea
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21

Knauder, Christoph, Hannes Allmaier, David E. Sander, and Theodor Sams. "Investigations of the Friction Losses of Different Engine Concepts: Part 3: Friction Reduction Potentials and Risk Assessment at the Sub-Assembly Level." Lubricants 8, no. 4 (2020): 39. http://dx.doi.org/10.3390/lubricants8040039.

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One of the biggest requirements of today’s engine development process for passenger cars is the need to reduce fuel consumption. A very effective and economic approach is the use of low-viscosity lubricants. In this work, sub-assembly resolved friction reduction potentials and risks are presented for three different engine concepts. By using a developed combined approach, the friction losses of the base engines are separated to the sub-assemblies piston group, crankshaft journal bearings, and valve train over the full operation range of the engines. Unique analyzing of boundary conditions make
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22

Turabimana, Pacifique, Jung Woo Sohn, and Seung-Bok Choi. "A Novel Active Cooling System for Internal Combustion Engine Using Shape Memory Alloy Based Thermostat." Sensors 23, no. 8 (2023): 3972. http://dx.doi.org/10.3390/s23083972.

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Pollutants in exhaust gases and the high fuel consumption of internal combustion engines remain key issues in the automotive industry despite the emergence of electric vehicles. Engine overheating is a major cause of these problems. Traditionally, engine overheating was solved using electric pumps and cooling fans with electrically operated thermostats. This method can be applied using active cooling systems that are currently available on the market. However, the performance of this method is undermined by its delayed response time to activate the main valve of the thermostat and the dependen
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23

Wells, Michael, Michael Kretser, Ben Hazen, and Jeffery Weir. "Modified C-17 taxi procedures: a fuel cost savings exploration." Journal of Defense Analytics and Logistics 4, no. 2 (2020): 129–45. http://dx.doi.org/10.1108/jdal-05-2019-0009.

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Purpose This study aims to explore the viability of using C-17 reduced-engine taxi procedures from a cost savings and capability perspective. Design/methodology/approach This study model expected engine fuel flow based on the number of operational engines, aircraft gross weight (GW) and average aircraft groundspeed. Using this model, the research executes a cost savings simulation estimating the expected annual savings produced by the proposed taxi methodology. Operational and safety risks are also considered. Findings The results indicate that significant fuel and costs savings are available
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24

LEJDA, Kazimierz, Artur JAWORSKI, and Adam USTRZYCKI. "The effect of injection timing parameters for liquid LPG fuel on selected operating parameters of the internal combustion engine." Combustion Engines 130, no. 3 (2007): 15–25. http://dx.doi.org/10.19206/ce-117321.

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This article presents selected results of scientifi c research concerning the infl uence of the LPG fuel sequential injection parameters on the operating parameters of the internal combustion engine. Research was performed in the Department of Vehicles and IC Engines on SI MD-111E engine, which has been adapted to LPG fuel supply in multi-point injection system to the branches of the inlet manifold. During the research the sequential single and double injection were performed. The tests results obtained show very signifi cant infl uence of the injection parameters (onset of injection and size
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25

Yulianto, Purwo. "Pengaruh Variasi Putaran Mesin terhadap Daya pada Engine Cummins KTTA 38 C." Jurnal Ilmiah Pendidikan Fisika Al-Biruni 5, no. 1 (2016): 23. http://dx.doi.org/10.24042/jpifalbiruni.v5i1.102.

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This study is about the effect of variations in engine rotation against the power of the engine Cummins KTTA 38 C used in loading tool for the coal mining that Komatsu PC 3000. This research was conducted at PT. Altrak 1978 Bontang which is a company engaged in the service and sales of heavy equipment. The purpose of this research is to know how to determine the engine speed of the engine power in accordance with Cummins KTTA 38C and how the influence of rotation on the power. The study was conducted on the engine general overhaul is carried out in November 2015 through January 2016. Testing o
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26

Hasanovich, Linda, and David Nobes. "Investigation of effect of heat exchanger size on power output in low-temperature difference Stirling engines." E3S Web of Conferences 313 (2021): 03002. http://dx.doi.org/10.1051/e3sconf/202131303002.

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The Stirling engine is capable of converting any source of thermal energy into kinetic energy, which makes it an attractive option for utilizing low-temperature sources such as geothermal or waste heat below 100 °C. However, at these low temperatures, the effects of losses are proportionally higher due to the lower thermal potential available. One such significant loss is excess dead volume, wherein a significant contributor is the heat exchangers. The heat exchangers must be selected to optimize power output by minimizing the dead volume loss while maximizing the heat transfer to and from the
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27

Pavlov, D. V. "Starting the diesel engine 1H9.5/8.0 by forced preheated air charge supply." Proceedings of Higher Educational Institutions. Маchine Building, no. 3 (744) (March 2022): 53–59. http://dx.doi.org/10.18698/0536-1044-2022-3-53-59.

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The use of small-sized air-cooled diesel engines as part of mobile units for operation in the harsh climatic conditions of the Arctic is a rather difficult task. As the ambient temperature decreases, the temperature at the compression stroke end, which is necessary for the appearance of the first flashes in the diesel cylinder, decreases significantly. At the ambient temperature of minus 60°C, start of a diesel engine becomes impossible. The stage of the appearance of the first flashes is very important for the subsequent spin-up of the crankshaft and the onset of a diesel engine independent o
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28

Basuki, Witono. "BIODEGRADASI LIMBAH OLI BEKAS OLEH Lycinibacillus sphaericus TCP C 2.1." Jurnal Teknologi Lingkungan 12, no. 2 (2016): 111. http://dx.doi.org/10.29122/jtl.v12i2.1243.

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Mikroorganism has capability to degrade used engine oil was isolated from soil sample contaminated with used engine oil. One of the selected strain TCP C 2.1 was identified by 16s rDNA as Lycinibacillus sphaericus. The microorganism can use hydrocarbon in used engine oil as the sole carbon source and energy, also it significantly degraded almost all hydrocarbon compounds in used engine oil. With its ability the microorganism has potency to be used as a single microbe for bioremediation of soil polluted by engine oil.
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Fowler, N. "Reduced hatchability associated with engine fumes." Veterinary Record 125, no. 22 (1989): 560. http://dx.doi.org/10.1136/vr.125.22.560-c.

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Zhao, Hong, Chen Sheng Bai, and Song Zhu. "Automatic Keyword Extraction Algorithm and Implementation." Applied Mechanics and Materials 44-47 (December 2010): 4041–49. http://dx.doi.org/10.4028/www.scientific.net/amm.44-47.4041.

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Search engines can bring a lot of benefit to the website. For a site, each page’s search engine ranking is very important. To make web page ranking in search engine ahead, Search engine optimization (SEO) make effect on the ranking. Web page needs to set the keywords as “keywords" to use SEO. The paper focuses on the content of a given word, and extracts the keywords of each page by calculating the word frequency. The algorithm is implemented by C # language. Keywords setting of webpage are of great importance on the information and products
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Ayissi, Merlin Zacharie, Ivan Aquigeh Newen, Rhiad Alloune, and Dieudonné Bitondo. "Effects of Gasoline and Hydrogen Blends on Exhaust Gas Emissions and Fuel Consumption from Gasoline Internal Combustion Engines." Journal of Combustion 2022 (September 14, 2022): 1–10. http://dx.doi.org/10.1155/2022/5526205.

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Gasoline engines remain a potential source of atmospheric pollution. Dual fuel combustion was under investigation to cope with exposure to pollutants. Investigations on emission parameters and engine performance for a single-cylinder four-stroke petrol engine are carried out using multicriteria decision-making method (MCDM). Bar charts are constructed for three emission parameters in function of engine temperature and fuel consumption for different blends. Fuels were supplied at different engine running speeds. Parameters recorded during the experimental study were the concentrations of carbon
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32

Potapov, Evgenii, Dmitriy Vahrameev, Stanislav Sinickiy, Vladimir Medvedev, and Alexey Terentyev. "OPTIMIZATION OF METHODS AND PARAMETERS OF PRE-START THERMAL PREPARATION OF THE ENGINE FOR STARTING DEPENDING ON THE AMBIENT TEMPERATURE." Vestnik of Kazan State Agrarian University 16, no. 4 (2022): 53–58. http://dx.doi.org/10.12737/2073-0462-2022-53-58.

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Due to the lack of a generally accepted methodology for calculating the starting processes of automotive diesel engines, today it is not possible to calculate their temperature parameters with a sufficient degree of accuracy during start-up, which determine the condition of a guaranteed start-up process. The main problem in applying theoretical calculations is that they take into account the compression ratio of the engine. But the compression ratio and the value of the actual pressure in the engine cylinders during the start-up are completely different indicators. The purpose of this work is
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Kumbár, Vojtěch, and Artüras Sabaliauskas. "Low-temperature behaviour of the engine oil." Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis 61, no. 6 (2013): 1763–67. http://dx.doi.org/10.11118/actaun201361061763.

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The behaviour of engine oil is very important. In this paper has been evaluated temperature dependence kinematic viscosity of engine oils in the low temperatures. Five different commercially distributed engine oils (primarily intended for automobile engines) with viscosity class 0W–40, 5W–40, 10W–40, 15W–40, and 20W–40 have been evaluated. The temperature dependence kinematic viscosity has been observed in the range of temperature from −15 °C to 15 °C (for all oils). Considerable temperature dependence kinematic viscosity was found and demonstrated in case of all samples, which is in accordanc
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34

Hancock, Darrell O., and Robert E. Synovec. "Early Detection of C-130 Aircraft Engine Malfunction by Principal Component Analysis of the Wear Metals in C-130 Engine Oil." Applied Spectroscopy 43, no. 2 (1989): 202–8. http://dx.doi.org/10.1366/0003702894203075.

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Spectrophotometry analysis of engine oil for wear metal to detect engine malfunctions and failing engine components is the basis of the United States Air Force Spectrophotometric Oil Analysis Program (SOAP). This program was abandoned for C-130 transport aircraft because of difficulties in correlating the atomic emission spectroscopy data with engine problems. Principal component analysis (PCA), a factor analysis method, reveals information and structure not previously apparent in the C-130 oil analysis data. These results suggest that the C-130 SOAP program could be made viable with the signi
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Severa, Libor, Miroslav Havlíček, and Vojtěch Kumbár. "Temperature dependent kinematic viscosity of different types of engine oils." Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis 57, no. 4 (2009): 95–102. http://dx.doi.org/10.11118/actaun200957040095.

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The objective of this study is to measure how the viscosity of engine oil changes with temperature. Six different commercially distributed engine oils (primarily intended for motorcycle engines) of 10W–40 viscosity grade have been evaluated. Four of the oils were of synthetic type, two of semi–synthetic type. All oils have been assumed to be Newtonian fluids, thus flow curves have not been determined. Oils have been cooled to below zero temperatures and under controlled temperature regulation, kinematic viscosity (mm2 / s) have been measured in the range of −5 °C and +115 °C. Anton Paar digita
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36

Wagner, Matthew J., Nelson H. Forster, Kenneth W Van Treuren, and David T. Gerardi. "Vapor Phase Lubrication for Expendable Gas Turbine Engines." Journal of Engineering for Gas Turbines and Power 122, no. 2 (2000): 185–90. http://dx.doi.org/10.1115/1.483193.

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Vapor phase lubrication (VPL) is an emerging technology that is currently targeted for application in limited life, expendable engines. It has the potential to cut 90 percent of the cost and weight of the lubrication system, when compared to a conventional liquid lubricated system. VPL, is effective at much higher temperatures than conventional liquid lubrication (600°C versus 200°C), so considerably less cooling for the bearing is required, to the extent that the bearing materials often dictate the maximum upper temperature for its use. The hot no. 8 bearing and the cold no. 1 bearing of the
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37

WOZNIAK, Marek, Gustavo OZUNA, and Krzysztof SICZEK. "Problems with glow plug – a review." Combustion Engines 186, no. 3 (2021): 11–30. http://dx.doi.org/10.19206/ce-140114.

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Despite the development of hybrid and electric vehicles, a many-million population of cars with combustion engines, and particularly CI engines occurs on the roads. Also, many stationary CI engines are still utilized. Despite their improved technologies and characteristics the modern CI engines negatively affect an environment due to cold starting problems. Below 0 °C, engine starts are problematic due to the decreased battery performance and the spray characteristics, the increased ignition delay time, and the engine oil viscosity. Therefore, various glow plugs are applied to facilitate this
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38

Irawan, Bambang. "Meningkatkan Daya Mesin Diesel jenis Common Reel yang dilengkapi Turbocharger dengan Menaikkan Suhu Bahan Bakar dan Suhu Udara." Jurnal Energi dan Teknologi Manufaktur (JETM) 1, no. 01 (2018): 41–46. http://dx.doi.org/10.33795/jetm.v1i01.6.

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This research aims is to increase engine power by raising the air temperature and fuel temperature into the engine and its effect on the resulting of SFC. Diesel engines that are use turbocharger, the air temperatures have increased but the fuel temperature is still fixed. The problem is how if the air temperature and fuel temperature are raised whether the engine power will increase and the SFC will change. This study was conducted with experiments using a car that the air temperature is adjusted up to 100oC and the fuel temperature that goes into the engine is made a maximum of 70oC. The tes
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39

Djohari, Ridwan. "Optimalisasi Daya Mesin Diesel Common Rail." KILAT 9, no. 1 (2020): 143–53. http://dx.doi.org/10.33322/kilat.v9i1.749.

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This research aims is to increase engine power by raising the air temperature and fuel temperature into the engine and its effect on the resulting of SFC. Diesel engines that are use turbocharger, the air temperatures have increased but the fuel temperature is still fixed. The problem is how if the air temperature and fuel temperature are raised whether the engine power will increase and the SFC will change. This study was conducted with experiments using a car that the air temperature is adjusted up to 100oC and the fuel temperature that goes into the engine is made a maximum of 70oC. The tes
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40

Chen, Gang Tian. "Optimization Design for C6190ZLC Marine Diesel Engine." Applied Mechanics and Materials 310 (February 2013): 339–42. http://dx.doi.org/10.4028/www.scientific.net/amm.310.339.

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With the gradual development of inshore fishing in depth and breadth, higher requirements are proposed against the dynamic property and economy marine diesel engine. Meanwhile, the convenience of maintenance and reliability of diesel engine are crucial to the operation efficiency of fishing boats. Therefore, it can better adapt to the constantly developing demands on marine engine market only by constantly improving the structure and performance of diesel engine.
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41

Yusof, Mohamad, Z. A. Zainal, N. A. Farid, and M. A. Miskam. "An Investigation of a Self-Pressurized Alpha V-Type Stirling Engine Converted Diesel Engine." Applied Mechanics and Materials 699 (November 2014): 695–701. http://dx.doi.org/10.4028/www.scientific.net/amm.699.695.

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This study reports the investigation results of 194cc. alpha V-type Stirling engine converted from a four-stroke diesel engine that operated in self-pressurized mode. Tests were conducted with air as the working gas and liquefied petroleum gas (LPG) as the heat source. The engine started operating at 600 °C for hot cylinder temperature and 60 °C for cold cylinder temperature, respectively. At heat input of 1100 J/s, the engine performance was successfully tested at both no load and load conditions. For mechanical shaft power assessment, the engine approximately produced a maximum brake power o
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42

Pukalskas, Saugirdas, Alfredas Rimkus, Mindaugas Melaika, Zenonas Bogdanovičius, and Jonas Matijošius. "NUMERICAL INVESTIGATION ON THE EFFECTS OF GASOLINE AND HYDROGEN BLENDS ON SI ENGINE COMBUSTION." Agricultural Engineering 46, no. 1 (2014): 66–77. http://dx.doi.org/10.15544/ageng.2014.006.

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Even small amount additive (10…15% by volume from whole air amount) of hydrogen (H2) into spark ignition (SI) engines obviously effects ecological parameters and engine efficiency because of H2 exclusive properties. SI engine work process simulation was made using AVL Boost simulation software. Analysis of results showed that engine power depends a lot on H2 supply technique into engine; NOx amount in exhaust gases directly proportional to the amount of H2, however, making mixture leaner up to λ = 1.6, it is possible to reach significant NOx decrease. Increased amount of H2 as an additive in f
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43

Laubichler, Christian, Constantin Kiesling, Matheus Marques da Silva, Andreas Wimmer, and Gunther Hager. "Data-Driven Sliding Bearing Temperature Model for Condition Monitoring in Internal Combustion Engines." Lubricants 10, no. 5 (2022): 103. http://dx.doi.org/10.3390/lubricants10050103.

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Condition monitoring of components in internal combustion engines is an essential tool for increasing engine durability and avoiding critical engine operation. If lubrication at the crankshaft main bearings is insufficient, metal-to-metal contacts become likely and thus wear can occur. Bearing temperature measurements with thermocouples serve as a reliable, fast responding, individual bearing-oriented method that is comparatively simple to apply. In combination with a corresponding reference model, such measurements could serve to monitor the bearing condition. Based on experimental data from
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44

George Done, Bogdan, and Ion Copae. "Performances of a Research CFR Octane Rating Unit Engine and Dacia Single Cylinder SI Engine Ignited by a LASER System." E3S Web of Conferences 112 (2019): 01009. http://dx.doi.org/10.1051/e3sconf/201911201009.

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At this time, the severe legislation regarding the level limits of the waste and exhaust gases released by thermal engines and also the necessity of engines efficiency improvement boost the engine research domain to bring in front the use of new technologies that can be used to control the in-cylinder combustion process. Now, the new technologies is represented by LASER spark plug systems which can be successfully used at petrol engines. LASER spark plug technology can have many advantages for engine operation control, an ignition system that could provide improved combustion is the one using
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45

Saksono, Puji, and Pandu Prastiyo Utomo. "ANALISIS PENGARUH PEMBEBANAN ENGINE TERHADAP EMISI GAS BUANG DAN FUEL CONSUMPTION MENGGUNAKAN BAHAN BAKAR SOLAR DAN BIODIESEL B10 PADA ENGINE CUMMINS QSK 45 C." POROS 15, no. 2 (2018): 136. http://dx.doi.org/10.24912/poros.v15i2.1276.

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Abstract: The fuels for Diesel engines derived from petroleum of its existence the longer depleting. Starting from this, the use of biodiesel as a successor is an alternative solution. Conversion of diesel fuel for Diesel engines of heavy equipment to the other types, one of them should pay attention to emissions- related environmental pollution and fuel consumption. This research was conducted with the aim to find out the influence of loading engine against exhaust emissions and fuel consumption using diesel fuel and biodiesel B10 on engine Cummins QSK 45 c. Testing performed in the PT. Sapta
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46

Bondar, V. N. "DETERMINATION OF DIFFERENT METHODS OF TRACTORS DIESEL ENGINE PRE-START PREPARATION AT ITS STARTING CHARACTERISTICS." Traktory i sel hozmashiny 84, no. 2 (2017): 42–46. http://dx.doi.org/10.17816/0321-4443-66279.

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The article presents the results of an experimental study of a tractor diesel engine 4CHN15/20,5, equipped with various pre-start preparations tools, starting characteristics in a climate chamber at low ambient temperatures. The purpose of the study is the determination of different methods of tractors diesel engine pre-start preparation at its starting characteristics. Engine was sequentially equipped with electric starter system, together with the liquid starting preheater, and starter engine, which exhaust gases were used for oil heating in the crankcase of a diesel engine. On the engine wa
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47

Ma, Yu-Han, C. P. Sun, and Hui Dong. "Consistency of optimizing finite-time Carnot engines with the low-dissipation model in the two-level atomic heat engine." Communications in Theoretical Physics 73, no. 12 (2021): 125101. http://dx.doi.org/10.1088/1572-9494/ac2cb8.

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Abstract The efficiency at the maximum power (EMP) for finite-time Carnot engines established with the low-dissipation model, relies significantly on the assumption of the inverse proportion scaling of the irreversible entropy generation ΔS (ir) on the operation time τ, i.e. ΔS (ir) ∝ 1/τ. The optimal operation time of the finite-time isothermal process for EMP has to be within the valid regime of the inverse proportion scaling. Yet, such consistency was not tested due to the unknown coefficient of the 1/τ-scaling. In this paper, we reveal that the optimization of the finite-time two-level ato
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48

Ma, Yu-Han, C. P. Sun, and Hui Dong. "Consistency of optimizing finite-time Carnot engines with the low-dissipation model in the two-level atomic heat engine." Communications in Theoretical Physics 73, no. 12 (2021): 125101. http://dx.doi.org/10.1088/1572-9494/ac2cb8.

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Abstract The efficiency at the maximum power (EMP) for finite-time Carnot engines established with the low-dissipation model, relies significantly on the assumption of the inverse proportion scaling of the irreversible entropy generation ΔS (ir) on the operation time τ, i.e. ΔS (ir) ∝ 1/τ. The optimal operation time of the finite-time isothermal process for EMP has to be within the valid regime of the inverse proportion scaling. Yet, such consistency was not tested due to the unknown coefficient of the 1/τ-scaling. In this paper, we reveal that the optimization of the finite-time two-level ato
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49

Mustaffa, Norrizal, Amir Khalid, Mohamad Farid Sies, Hanis Zakaria, and Bukhari Manshoor. "Performance and Emissions of Preheated Biodiesel on a Compression Ignition (CI) Engines ." Applied Mechanics and Materials 465-466 (December 2013): 291–95. http://dx.doi.org/10.4028/www.scientific.net/amm.465-466.291.

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Diesel engines are still widely needed and applicable to agriculture, construction, light duty passenger car and heavy duty vehicles. In recent years, limited supply of fossil fuel makes alternative sources of fuel especially biodiesel receiving a lot of attention in the automotive industry. However, in using biodiesel as fuel had created poor fuel-air mixing that generally will produce lower performance and higher emissions than diesel fuel. This phenomenon associated with the fuel properties especially viscosity that higher compared to diesel fuel. The aim of this study is to investigate the
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50

Kornienko, Victoria, Roman Radchenko, Mykola Radchenko, Andrii Radchenko, Anatoliy Pavlenko, and Dmytro Konovalov. "Cooling Cyclic Air of Marine Engine with Water-Fuel Emulsion Combustion by Exhaust Heat Recovery Chiller." Energies 15, no. 1 (2021): 248. http://dx.doi.org/10.3390/en15010248.

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The fuel efficiency of marine diesel engine as any combustion engine falls with raising the temperature of air at the suction of its turbocharger. Therefore, cooling the engine turbocharger intake air by recovering exhaust gas heat to refrigeration capacity is a very perspective trend in enhancing the fuel efficiency of marine diesel engines. The application of water-fuel emulsion (WFE) combustion enables the reduction of a low-temperature corrosion, and, as a result, provides deeper exhaust gas heat utilization in the exhaust gas boiler (EGB) to the much lower temperature of 90–110 °C during
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