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Journal articles on the topic 'Turbocharger'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Korakianitis, Theodosios, and T. Sadoi. "Turbocharger-Design Effects on Gasoline-Engine Performance." Journal of Engineering for Gas Turbines and Power 127, no. 3 (2005): 525–30. http://dx.doi.org/10.1115/1.1808428.

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Specification of a turbocharger for a given engine involves matching the turbocharger performance characteristics with those of the piston engine. Theoretical considerations of matching turbocharger pressure ratio and mass flow with engine mass flow and power permits designers to approach a series of potential turbochargers suitable for the engine. Ultimately, the final choice among several candidate turbochargers is made by tests. In this paper two types of steady-flow experiments are used to match three different turbochargers to an automotive turbocharged-intercooled gasoline engine. The fi

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2

Tian, Wei, Defeng Du, Juntong Li, Zhiqiang Han, and Wenbin Yu. "Establishment of a Two-Stage Turbocharging System Model and Analysis on Influence Rules of Key Parameters." Energies 13, no. 8 (2020): 1953. http://dx.doi.org/10.3390/en13081953.

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This paper took a two-stage turbocharged heavy-duty six-cylinder diesel engine as the research object and established a two-stage turbocharging system matching model. The influence rules between the two-stage turbocharging key parameters were analyzed, while summarizing an optimization method of key parameters of a two-stage turbocharger. The constraint equations for the optimal distribution principle of the two-stage turbocharger’s pressure ratio and expansion ratio were proposed. The results show that when the pressure ratio constraint equation and expansion ratio constraint equation are sat

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3

Gricenko, Aleksandr, Vladimir Kozhanov, Aleksey Medvedev, Nail Adigamov, and Il'dus Gimaltdinov. "STUDY OF THE OUTPUT CHARACTERISTICS OF TURBOCOMPRESSORS OF MODERN AGRICULTURAL MACHINERY." Vestnik of Kazan State Agrarian University 18, no. 2 (2023): 57–65. http://dx.doi.org/10.12737/2073-0462-2023-57-65.

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The main causes of malfunction of turbocharged internal combustion engines are high dynamic loads, significant thermal loads in friction zones, wear of turbocharger elements, overheating of components and systems, oil starvation, etc. The reliability of the output parameters of the turbochargers depending on the variable input data values. A condition has been obtained for the trouble-free operation of turbocharger bearings, taking into account oil pumping at engine start, which makes it possible to determine the limits of turbocharger performance and to exclude failure cases with a guarantee.

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4

Alshammari, Mamdouh, Nikolaos Xypolitas, and Apostolos Pesyridis. "Modelling of Electrically-Assisted Turbocharger Compressor Performance." Energies 12, no. 6 (2019): 975. http://dx.doi.org/10.3390/en12060975.

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For the purposes of design of a turbocharger centrifugal compressor, a one-dimensional modelling method has been developed and applied specifically to electrically-assisted turbochargers (EAT). For this purpose, a mix of authoritative loss models was applied to determine the compressor losses. Furthermore, an engine equipped with an electrically-assisted turbocharger was modelled using commercial engine simulation software (GT-Power) to assess the performance of the engine equipped with the designed compressor. A commercial 1.5 L gasoline, in-line, 3-cylinder engine was selected for modeling.

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Fang, Yan Kai, and Limin Chen. "Performance Analysis on Electrical Aided Turbocharged System." Applied Mechanics and Materials 34-35 (October 2010): 1946–50. http://dx.doi.org/10.4028/www.scientific.net/amm.34-35.1946.

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A turbocharger is fitted to a diesel in order to enhance the inlet charge pressure, hence increasing the fresh air in the cylinder, then more fuel can be injected into the cylinder and sequentially more engine power can put out. The electrical aided turbocharged system is a mechanism adding a high speed electronic motor into a turbocharger shaft. The electronic motor can work as a motor to drive the turbocharger shaft and as a generator to generate electricity energy to storage energy. According to certain constraint conditions, the controlling strategy of the hybrid turbocharged system is pre

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6

Chen, Chien-Cheng, Yuan-Liang Jeng, and Shun-Chang Yen. "Applicability of Variable-Geometry Turbocharger for Diesel Generators under High Exhaust Back Pressure." Journal of Marine Science and Engineering 12, no. 6 (2024): 938. http://dx.doi.org/10.3390/jmse12060938.

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The exhaust back pressure of diesel engines is becoming increasingly higher nowadays. In order to keep discharging exhaust unhindered and operating smoothly under high exhaust back pressure, a large reduction in engine maximum brake output is often observed, as well as increased fuel consumption and lower combustion efficiency with heavy exhaust smokes. In our previous study, “Applicability of Reducing Valve Timing Overlap for Diesel Engines under High Exhaust Back Pressure”, a reduced valve timing overlap of 12 °CA partially improves the brake output and BSFC for a fixed-geometry turbocharged

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7

Dasappa, S., H. V. Sridhar, and I. Muzumdar. "Experiments on and thermodynamic analysis of a turbocharged engine with producer gas as fuel." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 226, no. 4 (2011): 1004–15. http://dx.doi.org/10.1177/0954406211419063.

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This article presents the studies conducted on turbocharged producer gas engines designed originally for natural gas (NG) as the fuel. Producer gas, whose properties like stoichiometric ratio, calorific value, laminar flame speed, adiabatic flame temperature, and related parameters that differ from those of NG, is used as the fuel. Two engines having similar turbochargers are evaluated for performance. Detailed measurements on the mass flowrates of fuel and air, pressures and temperatures at various locations on the turbocharger were carried out. On both the engines, the pressure ratio across

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8

Stolyarov, A. S. "Improving convergence of solving system of equations of matching of turbocharger and engine characteristic maps." Transactions of the Krylov State Research Centre S-I, no. 1 (2021): 100–102. http://dx.doi.org/10.24937/2542-2324-2021-1-s-i-100-102.

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The analysis of the relationship between the parameters of the operating point of the engine and the turbocharger is carried out in this article. The calculation method of matching of turbocharger and engine characteristic maps is proposed. The developed method makes it possible to calculate the operating point of a turbocharged diesel engine with simple iterations. The results of the work are useful for matching of turbocharger and engine characteristic maps.

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Galiev, Ilgiz, Ekaterina Parlyuk, and Bulat Ziganshin. "MODERNIZATION OF THE LUBRICATION SYSTEM OF THE TURBOCHARGER BEARING OF THE DIESEL ENGINE." Vestnik of Kazan State Agrarian University 16, no. 3 (2021): 67–71. http://dx.doi.org/10.12737/2073-0462-2021-67-71.

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The problem of increasing the unit power of the engine without making changes to its design is solve by using a turbo supercharger. However, due to the intensity of the turbochargers operating mode, which are characterized by engine speed variability due to changing load indicators during operation (the number of rotor revolutions varies from 30000 min-1 to 120000 min-1, engine exhaust gases have a temperature of about 7500C), there is a need to improve the efficiency of the turbocharger bearing lubrication system. The purpose of the research is to ensure the operability and increase the relia

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Alaviyoun, Seyed Shahabeddin, and Masoud Ziabasharhagh. "Experimental thermal survey of automotive turbocharger." International Journal of Engine Research 21, no. 5 (2018): 766–80. http://dx.doi.org/10.1177/1468087418778987.

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Turbochargers are commonly used in the automotive industry due to their ability to increase the specific power output of internal combustion engines. Heat transfer from the turbine to the compressor can strongly influence the turbocharger performance. Therefore, it is essential to consider heat transfer properties of the turbochargers. Existing heat transfer models are generally limited to the specific situations on the turbocharger test rig or the engine test bench, which are different to the real conditions of engine operation in a vehicle. Accurate modeling and calculation of the heat trans

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11

Li, Bin, and Shou Jun Zhang. "MV “CRYSTAL STAR” Diesel Turbocharger Surge Cause Analysis and Troubleshooting." Applied Mechanics and Materials 672-674 (October 2014): 1562–67. http://dx.doi.org/10.4028/www.scientific.net/amm.672-674.1562.

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Currently shipping costs are increasing sharply due to the rising oil prices. In order to reduce shipping costs, most low-speed two-stroke diesel engines run at low speeds to reduce fuel oil consumption, and this measure might result turbocharger surge. For modern marine diesel engines, the exhaust gas turbochargers are becoming more and more important; their working conditions have a direct impact on the performance of diesel engines, consequently affecting the operation of the ship. Surge will fail a turbocharger to achieve the supercharging ratio, damage the turbocharger components and even

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12

Sass, Péter. "Literature Research on Experimental Investigations of Automotive Turbocharger Rotordynamics." Acta Technica Jaurinensis 12, no. 4 (2019): 268–93. http://dx.doi.org/10.14513/actatechjaur.v12.n4.498.

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Contemporary turbochargers are high-speed rotating devices, commonly supported by full floating bearings or semi-floating bearings. Depending on the size and operational speed of the turbocharger, rotordynamics significantly changes. Industrial turbochargers are operating below 20.000 RPM and their rotor weight is substantial, leading to quasilinear rotordynamics behaviour. By contrast, automotive turbochargers are rotating up to 300.000 RPM with non-linear rotordynamics characteristics. Due to this non-linearity, rotor movement is intense, and bearing load is dynamically changing all the time

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Wang, Shi Juan. "T-145 Turbocharger Product Identification and Research Organizations." Applied Mechanics and Materials 488-489 (January 2014): 877–80. http://dx.doi.org/10.4028/www.scientific.net/amm.488-489.877.

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T-145 turbocharger for 170 series turbocharged diesel engine supporting one type of supercharger. Product quality system certification involves turbocharger manufacturing quality and use of quality aspects. Production of quality products , including the product design quality , production organization , quality parts , components and standard parts supply , assembly quality. Use quality turbocharger can be achieved in the course of the performance indicators.These indicators are in the laboratory by the engine manufacturer turbocharger performance test data . User Quality is the key to life te

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14

Flaxington, D., and E. Swain. "Turbocharger aerodynamic design." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 213, no. 1 (1999): 43–57. http://dx.doi.org/10.1243/0954406991522176.

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The aerodynamic design of turbochargers is described, covering radial compressors and turbines and also axial turbines. The paper concentrates upon those aspects that are peculiar to turbocharger design, including the approach adopted, and highlights the importance of company-specific empirical data. Turbochargers have to be physically adaptable to suit many different sizes of engine, with a great variety of operating duties. The need for turbochargers to achieve the highest obtainable performance at the lowest cost while maintaining durability levels comparable with the engine contributes to

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15

Yin, Sheng, Jimin Ni, Houchuan Fan, Xiuyong Shi, and Rong Huang. "Study on Correction Method of Internal Joint Operation Curve Based on Unsteady Flow." Applied Sciences 12, no. 23 (2022): 11943. http://dx.doi.org/10.3390/app122311943.

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The turbocharger, a key component in a vehicle’s powertrain, results in insufficient accuracy if it does not fully consider the unsteady flow effects of the intake and exhaust systems. Based on the difference between the turbocharger’s actual operating performance with unsteady flow and the corresponding steady flow performance, unsteady flow correction concepts and correction methods for the compressor and turbine were put forward, and the correction of the internal joint operation curve was investigated. The results show that when unsteady correction coefficients were added to both ends of t

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16

Galimov, Aynur, Ilgiz Galiev, Bulat Ziganshin, Rail Khusainov, and Al'bert Muhametshin. "THE RESULTS OF THE STUDY OF THE INFLUENCE OF THE OPERATING CONDITIONS OF THE TURBOCHARGER ON ITS PERFORMANCE." Vestnik of Kazan State Agrarian University 16, no. 2 (2021): 70–74. http://dx.doi.org/10.12737/2073-0462-2021-70-74.

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The operability of the bearing assembly, which ensures the operation of the turbocharger at different speeds of its rotor, determines the reliability of the turbocharger as a whole. In this regard, the condition of the turbocharger bearing assembly determines the performance of the entire turbocharger. The purpose of the research is to justify the parameter that determines the performance of the turbocharger and a comparative assessment of changes in the state of turbochargers with a standard lubrication system and when using individual bearing assembly lubrication systems. The main factors af

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17

Adamkiewicz, Andrzej, and Piotr Nikończuk. "An attempt at applying machine learning in diagnosing marine ship engine turbochargers." Eksploatacja i Niezawodnosc - Maintenance and Reliability 24, no. 4 (2022): 795–804. http://dx.doi.org/10.17531/ein.2022.4.19.

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The article presents a diagnosis of turbochargers in the supercharging systems of marine engines in terms of maintenance decisions. The efficiency of turbocharger rotating machines was defined. The operating parameters of turbocharging systems used to monitor the correct operation and diagnose turbochargers were identified. A parametric diagnostic test was performed. Relationships between parameters for use in machine learning were selected. Their credibility was confirmed by the results of the parametric test of the turbocharger system and the main engine, verified by the coefficient of deter

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18

Tauzia, X., J. F. Hetet, P. Chesse, G. Crosshans, and L. Mouillard. "Computer aided study of the transient performances of a highly rated sequentially turbocharged marine diesel engine." Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy 212, no. 3 (1998): 185–96. http://dx.doi.org/10.1243/0957650981536853.

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The sequential turbocharging technique described in this paper leads to an improvement in the operations of highly rated diesel engines, in particular at part loads (better air admission). However, transient phases such as a switch from one turbocharger to two turbochargers can be difficult, mainly because of the inertia of the turbochargers. In order to simulate the dynamics of turbocharged diesel engines, the SELENDIA software has been extended. When applied to two different engines (12 and 16 cylinders), the program shows good agreement with the experimental data. Moreover, the compressor s

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19

Justin Dhiraviam, F., V. Naveen Prabhu, T. Suresh, and C. Selva Senthil Prabhu. "Improved Efficiency in Engine Cooling System by Repositioning of Turbo Inter Cooler." Applied Mechanics and Materials 787 (August 2015): 792–96. http://dx.doi.org/10.4028/www.scientific.net/amm.787.792.

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Turbochargers are an integral part of today’s modern diesel engines and are a major reason that they are able to produce more power. Unlike a super charger that is driven via a belt from the engine, a turbo takes the exhaust that the engine is producing and puts it to good use. As Turbochargers are driven by exhaust, heat is an unwelcome by product and something that wasn’t really taken into account in automobiles. Then those intercoolers started to come into play in turbocharged automobiles. The forced air produced by the turbocharger is routed through the intercooler where its temperature is

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20

Tona, Tasdik. "UPAYA MEMPERTAHANKAN KINERJA TURBOCHARGE MAIN ENGINE DI MT.EXPLORINDO 1." JURNAL VENUS 10, no. 2 (2022): 50–56. http://dx.doi.org/10.48192/vns.v10i2.583.

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Tujuan dari penelitian ini adalah mengetahui penyebab kurang optimalnya kinerja turbocharger main engine di kapal MT. Explorindo 1. Penelitian ini dilaksanakan dil MT. Explrondo 1,milik PT. Buana Lintas Lautan yang dilaksanakan dari tanggal 18 Desember 2019 sampai dengan tanggal 7 Januari 2021. Sumber data yang diperoleh langsung dari tempat penelitian dengan cara observasi serta data-data dari beberapa buku referensi. Hasil penelitian ini diperoleh dari penelitian yang menunjukkan bahwa kurang optimalnya kinerja turbocharge main disebabkan oleh kotornya turbin blade pada turbocharger main eng

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21

Machado, Luiz Henrique Jorge, Oscar Ricardo Sandoval, José Victor Matos Carvalho Pereira, et al. "Influence of Fluid Film Bearings with Different Axial Groove Shapes on Automotive Turbochargers: An Experimental Study." Lubricants 10, no. 5 (2022): 92. http://dx.doi.org/10.3390/lubricants10050092.

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Most commercial automotive turbochargers (TC) employ semi-floating ring bearings (SFRB) with axial groove shapes. In order to bring some insights into the role played by the axial groove geometry on the dynamics of TC, this work deals with an experimental study of the rotordynamic behavior of a stock automotive turbocharger operating on SFRB with two different groove shapes, which have the same volume and width, and with the same number of grooves. The rotating machine behavior has been evaluated under different operating conditions using a test bench specially designed to analyze turbocharger

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Chiriac, Rareș-Lucian, Anghel Chiru, Răzvan Gabriel Boboc, and Ulf Kurella. "Advanced Engine Technologies for Turbochargers Solutions." Applied Sciences 11, no. 21 (2021): 10075. http://dx.doi.org/10.3390/app112110075.

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Research in the process of internal combustion engines shows that their efficiency can be increased through several technical and functional solutions. One of these is turbocharging. For certain engine operating modes, the available energy of the turbine can also be used to drive an electricity generator. The purpose of this paper is to highlight the possibilities and limitations of this solution. For this purpose, several investigations were carried out in the virtual environment with the AMESim program, as well as experimental research on a diesel engine for automobiles and on a stand for te

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Katrašnik, Tomaž, Ferdinand Trenc, Vladimir Medica, and Stojan Markič. "An Analysis of Turbocharged Diesel Engine Dynamic Response Improvement by Electric Assisting Systems." Journal of Engineering for Gas Turbines and Power 127, no. 4 (2004): 918–26. http://dx.doi.org/10.1115/1.1924533.

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It is well known that turbocharged diesel engines suffer from an inadequate response to sudden load increase, this being a consequence of the nature of the energy exchange between the engine and the turbocharger. The dynamic response of turbocharged diesel engines could be improved by electric assisting systems, either by direct energy supply with an integrated starter-generator-booster (ISG) mounted on the engine flywheel, or indirect energy supply with an electrically assisted turbocharger. A previously verified zero dimensional computer simulation method was used for the analysis of both ty

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Özgür, Tayfun, and Kadir Aydın. "Analysis of Engine Performance Parameters of Electrically Assisted Turbocharged Diesel Engine." Applied Mechanics and Materials 799-800 (October 2015): 861–64. http://dx.doi.org/10.4028/www.scientific.net/amm.799-800.861.

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Charging system is used to increase the charge density. Supercharging system suffers from fuel consumption penalty because of compressor powered by engine output. Turbocharging system uses wasted exhaust energy that means compressor powered by exhaust turbine but has a turbo lag problem. The electrically assisted turbocharger which can eliminate turbo lag problem and fuel consumption penalty is the topic of this paper. The purpose of this paper is to analyze the effect of electrically assisted turbocharger on diesel engine performance parameters. The AVL Boost software program was used to simu

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Fasolia, V., M. Hetman, and A. Staryi. "Performance analysis of turbocharger rotor friction pairs of an automobile engine." Problems of Tribology 28, no. 4/110 (2023): 58–65. http://dx.doi.org/10.31891/2079-1372-2023-110-4-58-65.

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Turbochargers are used in modern engines to increase their performance by increasing the amount of air supplied. To increase wear resistance, researchers and engineers are improving integrated technologies for strengthening turbocharger assemblies. The purpose of this study is to evaluate and analyze the influence of integrated strengthening technologies on the wear resistance of the turbocharger assembly. Integrated strengthening technologies include the use of new materials, coatings, design changes and manufacturing processes that improve the strength, thermal stability and wear resistance

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Liu, Xianglong, Hao Yang, Zhao Feng, Guang Hu, and Zhi Zeng. "Assessing the Feasibility of Cogeneration Retrofit for Heating and Electricity Demands in Marine Diesel Engines." International Transactions on Electrical Energy Systems 2023 (May 11, 2023): 1–10. http://dx.doi.org/10.1155/2023/3280579.

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In the marine engineering industry, turbocharged diesel engines are often used to generate electricity, and hot oil can be extracted after generating electricity. However, marine diesel engine heat recovery can be distinguished from gas heat recovery for turbocharged and nonturbocharged diesel engine systems. The ideal air model Brayton cycle is used to evaluate the feasibility of turbocharged/nonturbocharged cogeneration retrofits in turbocharged diesel engine systems, and the paper is designed to evaluate the effect of pressure and temperature and cooling ratio of exergy efficiency. The resu

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IPATOV, A. G., K. G. VOLKOV, and A. V. MALININ. "RESTORATION OF THE ROTOR SHAFT OF THE TURBOCHARGER TKR-7S-6 OF INTERNAL COMBUSTION ENGINE." Tekhnicheskiy servis mashin 62, no. 2 (2024): 97–104. http://dx.doi.org/10.22314/2618-8287-2024-62-2-97-104.

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The use of a turbocharger has a positive effect on the power of the internal combustion engine, reduces fuel consumption and positively affects the environmental friendliness of operation. Along with the positive effect on the operation of the internal combustion engine, turbochargers reduce the overall life of the engine. Small extreme wear and a small diameter of the rotor shaft limit the use of traditional recovery processes. (Research purpose). The research purpose is developing a method for restoring the rotor shaft of a turbocharger of internal combustion engines. (Materials and methods)

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Zhang, Ji, and Kenong Xia. "TiAl Turbochargers for Automobile Application." Materials Science Forum 618-619 (April 2009): 559–62. http://dx.doi.org/10.4028/www.scientific.net/msf.618-619.559.

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A textured microstructure was produced in the TiAl turbocharger blades and platelike TiAl samples in the process of conventional casting, in which the lamellar orientation is parallel to the plate surfaces. A microstructure design specific to the turbocharger blades was therefore proposed based on the preponderance in tensile properties, creep rupture life and creep resistance along the preferential lamellar orientation. The mechanical capacity of the TiAl turbochargers has been validated through endurance tests.

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Serrano, José R., Pablo Olmeda, Francisco J. Arnau, and Vishnu Samala. "A holistic methodology to correct heat transfer and bearing friction losses from hot turbocharger maps in order to obtain adiabatic efficiency of the turbomachinery." International Journal of Engine Research 21, no. 8 (2019): 1314–35. http://dx.doi.org/10.1177/1468087419834194.

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Turbocharger performance maps provided by manufacturers are usually far from the assumption of reproducing the isentropic performance. The reason being, those maps are usually measured using a hot gas stand. The definition of the effective turbocharger efficiency maps include the mechanical losses and heat transfer that has occurred during the gas stand test for the turbine maps and only the heat transfer for the compressor maps. Thus, a turbocharger engine model that uses these maps provides accurate results only when simulating turbocharger operative conditions similar to those at which the

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Wang, Zhihui, Chaochen Ma, Zhi Huang, Liyong Huang, Xiang Liu, and Zhihong Wang. "A novel variable geometry turbine achieved by elastically restrained nozzle guide vanes." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 234, no. 9 (2020): 2312–29. http://dx.doi.org/10.1177/0954407020909662.

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Variable geometry turbocharging is one of the most significant matching methods between turbocharger and engine, and has been proven to provide air boost for entire engine speed range as well as to reduce turbo-lag. An elastically constrained device designed for a novel variable geometry turbocharger was presented in this paper. The design of the device is based on the nozzle vane’s self-adaptation under interactions of the elastic force by elastically restrained guide vane and the aerodynamic force from flowing gas. The vane rotation mechanism of the novel variable geometry turbocharger is di

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Shaaban, S., and J. Seume. "Impact of Turbocharger Non-Adiabatic Operation on Engine Volumetric Efficiency and Turbo Lag." International Journal of Rotating Machinery 2012 (2012): 1–11. http://dx.doi.org/10.1155/2012/625453.

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Turbocharger performance significantly affects the thermodynamic properties of the working fluid at engine boundaries and hence engine performance. Heat transfer takes place under all circumstances during turbocharger operation. This heat transfer affects the power produced by the turbine, the power consumed by the compressor, and the engine volumetric efficiency. Therefore, non-adiabatic turbocharger performance can restrict the engine charging process and hence engine performance. The present research work investigates the effect of turbocharger non-adiabatic performance on the engine chargi

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Roy, Badal Dev, and R. Saravanan. "Experimental Evaluation of Turbo-Matching Appropriateness of B60J67, B60J68, A58N70 and A58N72 Turbo-Chargers for a Commercial Vehicle Engine." International Journal of Emerging Research in Management and Technology 6, no. 11 (2018): 71. http://dx.doi.org/10.23956/ijermt.v6i11.49.

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The Turbocharger is a charge booster for internal combustion engines to ensure best engine performance at all speeds and road conditions especially at the higher load. Random selection of turbocharger may lead to negative effects like surge and choke in the breathing of the engine. Appropriate selection or match of the turbocharger (Turbomatching) is a tedious task and expensive. But perfect match gives many distinguished advantages and it is a one time task per the engine kind. This study focuses to match the turbocharger to desired engine by simulation and on road test. The objective of work

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Варбанець, Роман Анатолійович, Валентин Григорович Клименко, Дмитро Степанович Мінчев, Віталій Іванович Залож, Владислав Іванович Кирнац та Надія Ігорівна Александровська. "ДІАГНОСТИКА ТУРБОКОМПРЕСОРА ДИЗЕЛЬНОГО ДВИГУНА ЗА ДОПОМОГОЮ АНАЛІЗУ ВІБРОАКУСТИЧНОГО СПЕКТРУ". Aerospace technic and technology, № 6 (27 листопада 2020): 24–33. http://dx.doi.org/10.32620/aktt.2020.6.03.

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The method considered in the article consists in the analysis of the vibroacoustic signal generated by the compressor of the gas turbocharger during the operation of the diesel engine under load. Spectral analysis shows that the compressor blades generate vibrations that are always present in the spectrum of the general vibration of a gas turbocharger, regardless of its technical condition. The "blade" harmonic in the spectrum corresponding to these oscillations is determined using the method of limitations. The then calculated instantaneous rotor speed of the turbocharger makes it possible to

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Becze, Sigismund, and Gheorghe Ioan Vuscan. "Comparison study between two types of nozzles for a turbocharger balancing machine using ANSYS software." MATEC Web of Conferences 299 (2019): 04007. http://dx.doi.org/10.1051/matecconf/201929904007.

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Turbocharger balancing machines require a specific tooling for spinning the center housing rotating assembly, in order to balance it dynamically. The tooling requires a nozzle to guide the air to the blades of the turbine wheel in order to spin it. Depending on the type of nozzle chosen, the maximum rotational speed achieved and the acceleration curve can be different. In today?s market there is anincreasing demand for a higher turbocharger speed, generally driven by the demand for engine downsizing and for a higher performance. Due to that, turbochargers need to be better balanced, thus requi

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Burciu, Salvadore Mugurel, and Kristina Uzuneanu. "Response Time to Sudden Changes in Speed and Load Regimes for Turbocharged Diesel Engine." Applied Mechanics and Materials 659 (October 2014): 157–62. http://dx.doi.org/10.4028/www.scientific.net/amm.659.157.

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The paper includes results from experimental determinations of parameters for turbocharged MB836Db diesel engine, which functioning at dynamic conditions. The studied functioning modes resulting from sudden changes in acceleration and/or loading. The authors used for experimental determinations an railway Diesel engine turbocharged, MB836Db. The results are obtained based on measurements made in the department of Thermal Systems and Environmental Engineering from University “Dunarea de Jos” of Galati. Authors used the equipment which contains PLC module CBM 500, which is put on the turbocharge

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Kazemi Bakhshmand, Sina, Ly Tai Luu, and Clemens Biet. "Experimental Energy and Exergy Analysis of an Automotive Turbocharger Using a Novel Power-Based Approach." Energies 14, no. 20 (2021): 6572. http://dx.doi.org/10.3390/en14206572.

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The performance of turbochargers is heavily influenced by heat transfer. Conventional investigations are commonly performed under adiabatic assumptions and are based on the first law of thermodynamics, which is insufficient for perceiving the aerothermodynamic performance of turbochargers. This study aims to experimentally investigate the non-adiabatic performance of an automotive turbocharger turbine through energy and exergy analysis, considering heat transfer impacts. It is achieved based on experimental measurements and by implementing a novel innovative power-based approach to extract the

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Deng, Qiyou, Andrew Pennycott, Qingning Zhang, Calogero Avola, Ludek Pohorelsky, and Richard Burke. "Dimensionless quantification of small radial turbine transient performance." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 235, no. 1 (2020): 188–98. http://dx.doi.org/10.1177/0954407020942035.

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Turbochargers are inherently dynamic devices, comprising internal flow volumes, mechanical inertias and thermal masses. When operating under transient conditions within an engine system, these dynamics need to be better understood. In this paper, a new non-dimensional modelling approach to characterise the turbocharger is proposed. Two new dimensionless quantities are defined with respect to mechanical and thermal transient behaviour, which are used in conjunction with the Strouhal number for flow transients. The modelling approach is applied to a small wastegated turbocharger and validated ag

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Subramaniam, Kamalleswaran, and Wan Saiful-Islam Wan Salim. "Simulation of the Performance of an Electrically Turbocharged Engine Over an Urban Driving Cycle." International Journal of Automotive and Mechanical Engineering 21, no. 1 (2024): 11139–54. http://dx.doi.org/10.15282/ijame.21.1.2024.15.0861.

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The study aimed to estimate the energy recovery potential of a decoupled electric turbocharger and its boosting ability in a spark-ignition engine using simulation-based work. Passenger vehicle engines operate at low loads and speeds, requiring characterization and estimation of energy available for recovery under normal driving conditions. A 1-D numerical model of the engine and boosting system was developed to predict energy recovery over steady-state full-load operating conditions, part-load conditions, and actual, transient Klang Valley and Kuala Lumpur drive cycle conditions. The electric

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Chapman, G. M., and X. Wang. "Interpretation of Experimental and Theoretical Data for Prediction of Mode Shapes of Vibrating Turbocharger Blades." Journal of Vibration and Acoustics 110, no. 1 (1988): 53–58. http://dx.doi.org/10.1115/1.3269480.

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The blading in large turbochargers is subjected to vibration excitation originating from pulsations in the exhaust gas stream coupled with the blade pass frequencies. The amplitude of vibrations induced are a source of concern to design engineers as they can seriously affect the operation of the turbocharger. This paper discusses theoretical and experimental investigations aimed at identifying the natural frequencies and the associated mode shapes for a single turbocharger blade. Modal Analysis, Electronic Speckle Pattern Interferometry (ESPI), and Finite Element Analysis are all used in an at

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Krokhta, G. M., E. N. Khomchenko, and N. A. Usatykh. "Impact of turbocharging on the startability of diesel engines in winter." Traktory i sel hozmashiny 83, no. 4 (2016): 28–33. http://dx.doi.org/10.17816/0321-4443-66141.

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The article explores the startability of diesel engine with and without turbocharger under cold conditions. It is known that under subzero temperatures typical for many regions of Russia, the startability of diesel engines is significantly deteriorated. The aim of research is to study the impact of supercharger on startability of diesel engines. In the process of experimental researches by means of light-beam oscillograph, the indices characterizing the starting sequence have been received, namely: rotational frequencies of crankshaft and turbocharger rotor, air output, time of starting, cylin

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Boretti, Albert. "Super Turbocharging the Direct Injection Diesel engine." Nonlinear Engineering 7, no. 1 (2018): 17–27. http://dx.doi.org/10.1515/nleng-2017-0067.

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Abstract The steady operation of a turbocharged diesel direct injection (TDI) engine featuring a variable speed ratio mechanism linking the turbocharger shaft to the crankshaft is modelled in the present study. Key parameters of the variable speed ratio mechanism are range of speed ratios, efficiency and inertia, in addition to the ability to control relative speed and flow of power. The device receives energy from, or delivers energy to, the crankshaft or the turbocharger. In addition to the pistons of the internal combustion engine (ICE), also the turbocharger thus contributes to the total m

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Chen, Jiahao. "Turbochargers and related technologies." Theoretical and Natural Science 5, no. 1 (2023): 907–11. http://dx.doi.org/10.54254/2753-8818/5/20230549.

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Turbochargers are one of the most important inventions to facilitate internal combustion engines. This paper is a thematic review of the technology of the turbocharger with emphasis on its workings, influencing factors, applications, problems, solutions and related or derived technologies for purposes outside the motoring industry. This paper reveals that the turbocharger resembles a modeled heat machine with thermodynamic processes for boosting engine power output with exhaust gas flow. It gives rise to various problems including inefficiencies, lags and conditions to be met, etc. As solution

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Mazurkow, Aleksander, Wojciech Homik, Wojciech Lewicki, and Zbigniew Łosiewicz. "Evaluation of Selected Dynamic Parameters of Rotating Turbocharger Units Based on Comparative Model and Bench Tests." Energies 16, no. 14 (2023): 5550. http://dx.doi.org/10.3390/en16145550.

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Obtaining the best operating parameters of the internal combustion engine has focused the attention of designers and researchers since the first years of its creation. Initial research focused on increasing engine power and overall efficiency. As time passed, these aspirations became more sophisticated and began to concern other operating parameters of the drive unit. The basic problem, however, remained the improvement of filling the cylinder with the working medium. Turbocharger charging consists in using the energy of the exhaust gases to drive a turbine placed on a common shaft with a comp

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Panting, J., K. R. Pullen, and R. F. Martinez-Botas. "Turbocharger motor-generator for improvement of transient performance in an internal combustion engine." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 215, no. 3 (2001): 369–83. http://dx.doi.org/10.1243/0954407011525700.

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Turbocharging of internal combustion engines is an established technology used for the purpose of increasing both power density and in some cases the cycle efficiency of diesel engines relative to naturally aspirated engines. However, one significant drawback is the inability to match the characteristics of the turbocharger to the engine under full load and also to provide sufficiently good transient response. Under many conditions this results in reduced efficiency and leads to higher exhaust emissions. The design of turbocharger components must be compromised in order to minimize these drawb

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Gu, Can song, Zhao cheng Yuan, Zheng rui Yang, Jia xin Liu, and Hong liang Li. "Dynamic characteristics of high-speed gasoline engine turbocharger based on thermo-elasto-hydrodynamic lubrication bearing model and flexible multibody dynamics method." Science Progress 103, no. 1 (2020): 003685041989771. http://dx.doi.org/10.1177/0036850419897712.

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A flexible multibody dynamic calculation model based on thermo-elasto-hydrodynamic lubrication bearing model was established. This numerical simulation method provided a more realistic turbocharger calculation model and a more reliable theoretical support for studying the dynamic vibration characteristics of the floating ring bearing turbocharger system. In order to fully consider the dynamic characteristics of each component, the behavior of the floating ring bearing was described by generalized incompressible Reynolds equation in thermo-elasto-hydrodynamic lubrication model. The flexible bod

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Ammad ud Din, Syed, Weilin Zhuge, Panpan Song, and Yangjun Zhang. "A method of turbocharger design optimization for a diesel engine with exhaust gas recirculation." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 233, no. 10 (2018): 2572–84. http://dx.doi.org/10.1177/0954407018802560.

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Downsizing a diesel engine using turbocharger and coupling it with exhaust gas recirculation is the recent trend to improve engine performance and emission control. For diesel engines, it is important to match a turbocharger that meets both the low-speed torque and high-speed power requirements. This article presents a method of turbocharger design optimization for a turbocharged diesel engine equipped with exhaust gas recirculation, on the basis of parametric study of turbocharger geometry. Turbocharger through-flow model along with one-dimensional engine model is used to study the effect of

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Shen, Xianqing, Kai Shen, and Zhendong Zhang. "Experimental study on the effect of high-pressure and low-pressure exhaust gas recirculation on gasoline engine and turbocharger." Advances in Mechanical Engineering 10, no. 11 (2018): 168781401880960. http://dx.doi.org/10.1177/1687814018809607.

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The effects of high-pressure and low-pressure exhaust gas recirculation on engine and turbocharger performance were investigated in a turbocharged gasoline direct injection engine. Some performances, such as engine combustion, fuel consumption, intake and exhaust, and turbocharger operating conditions, were compared at wide open throttle and partial load with the high-pressure and low-pressure exhaust gas recirculation systems. The reasons for these changes are analyzed. The results showed EGR system of gasoline engine could optimize the cylinder combustion, reduce pumping mean effective press

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Capata, Roberto, and Enrico Sciubba. "Study, Development and Prototyping of a Novel Mild Hybrid Power Train for a City Car: Design of the Turbocharger." Applied Sciences 11, no. 1 (2020): 234. http://dx.doi.org/10.3390/app11010234.

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Within a large, state-funded, Italian National Project aimed to test the feasibility of an on-the-road prototype of a mild hybrid city vehicle, one of the tasks was to conceive, design and implement an innovative turbocharger that would allow for some energy recovery. The selected vehicle is propelled by a 3-cylinder, 998 cc turbocharged engine (the 66 kW Mitsubishi-Smart W451). The idea is to implement two types of energy recovery: one via the new turbocharger and one through a standard braking energy recovery (also known as KERS). The study of the former is the object of this paper. The prop

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Karamanis, N., and R. F. Martinez-Botas. "Mixed-flow turbines for automotive turbochargers: Steady and unsteady performance." International Journal of Engine Research 3, no. 3 (2002): 127–38. http://dx.doi.org/10.1243/14680870260189253.

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Turbochargers are finding increasing application to automotive diesel engines as cost effective means for improving their power output and efficiency, and reducing exhaust emissions; these requirements have led to the need for highly loaded turbocharger turbines. A mixed-flow turbine is capable of achieving its peak isen-tropic efficiency at reduced velocity ratios compared to a typical radial inflow turbine; it is therefore possible to improve the turbocharger/engine matching. These turbines differ from the commonly used radial turbines in that the flow approaches the rotor in the non-radial

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Sepfitrah. "Analisis Efisiensi Sistem Turbocharger pada Engine PLTMG 20 MW Berdasarkan Konsumsi Udara." Jurnal Surya Teknika 9, no. 2 (2022): 487–91. http://dx.doi.org/10.37859/jst.v9i2.4397.

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Turbocharging system efficiency is a comparison between turbocharging efficiency and turbocharger efficiency. This study analyzes the performance of the ABB 140 and TCR 18 turbochargers on two JGS 620 series F111 gas engines for 3000 hours of operation. The analysis will be carried out based on the specific airflow consumption of the JGS 620 series F111 gas engine. The specific air flow consumption is obtained based on calculations, the ABB A140 turbocharger consumes an average of 0.2% more air than the TCR 18 turbocharger. This condition results in a higher output power on engine 2 on average

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