Relevant bibliographies by topics / Throttle opening

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Academic literature on the topic 'Throttle opening'

Author: Grafiati
Published: 4 June 2025
Last updated: 23 June 2025

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Journal articles on the topic "Throttle opening"

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Sepriyatno, Riswan, Eko Siswanto, and Nurkholis Hamidi. "Performa pada Motor Bakar 6-Langkah dengan Langkah Power Ekspansi sampai Titik Mati Bawah." Jurnal Rekayasa Mesin 12, no. 2 (2021): 411–19. http://dx.doi.org/10.21776/ub.jrm.2021.012.02.18.

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This study aims are to observe the performance of a six-stroke combustion motor and to analyze the thermodynamics of a six-stroke combustion engine with a power expansion step to the bottom dead center. The fuel used in this observation is pertalite with a RON 90 value. The method used is a true experimental method, with independent variables, namely 35%, 40%, 45%, and 50% throttle openings with loading on the prony disc brake of 10 kg, 20kg, 30kg, 40kg, and 50kg. In the torque data, each throttle opening shows the highest number of 7.26 (Nm) with a load of 50kg and the lowest value of 2.01 (Nm) with a load of 10kg, for effective power the highest value is 8.47 (kW) at 50% throttle opening with load is 40kg and the lowest value is 2.49 (kW) at 35% throttle opening with a load of 10kg, while for the specific fuel consumption (SFC) the highest value is 4.28 (kg/Hp.h) at 40% throttle opening with a load of 10kg and the lowest value is 0.77 (kg/Hp.h) at 50% throttle openings with a load of 50kg, and for the thermal efficiency of the six-stroke motor, which means an average increase of 14.58% compared to the thermal efficiency of the conventional 4-stroke internal combustion engine.
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Fu, Yukun, Huiyun Ma, Chenggang Yu, et al. "Analysis of Effective Operation Performance of Wireless Control Downhole Choke." Shock and Vibration 2020 (November 12, 2020): 1–12. http://dx.doi.org/10.1155/2020/7831819.

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Wireless control downhole throttle is designed to control the opening of downhole throttle remotely by ground pressure wave signal to regulate downhole production in a wireless and intelligent manner. The throttle’s production regulation capability and the noise immunity of the signal receiver are the key factors affecting the reliability of the throttle operation. Based on computational fluid dynamics (CFD) theory, the flow field of downhole throttle is simulated numerically to study the flow resistance characteristics of wireless control downhole throttle and the stability of flow field at signal receiver. Finally, the field test proves that the tool achieves the design capacity of production regulation and can accurately receive signals to regulate downhole production in a wireless and intelligent manner. The research content of this paper provides theoretical and experimental basis for the further improvement and optimization of the wireless control downhole throttle’s structure and has certain guiding significance for the field use of the throttle, achieving the purpose of downhole wireless intelligent production adjustment.
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Mujtaba, Muhammad, Wang Cuntang, Faisal Muhammad Yasin, and Fangwei Xie. "Throttle Valve as a Heating Element in Wind Hydraulic Thermal System." Journal of Advance Research in Mechanical & Civil Engineering (ISSN: 2208-2379) 5, no. 2 (2018): 01–11. http://dx.doi.org/10.53555/nnmce.v5i2.304.

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A new energy conversion system is established which converts wind hydraulic energy directly to heat energy. For this purpose of conversion throttle valve considered as a heat generating source in the utilization ofwind energy to confine the wind energy into thermal energy. The use of throttle valve indicates to calculate the heat generation by using the simulation in Matlab and count the physical and mathematical model of the heating system. Various analyses are made on the basis of throttle valve parameters to compare the theoretical results on various values. To compute the effective results, needle valve used as a testing element in hydraulic system to change the opening of the throttle valve which estimates the heat generating capacity of the system. The opening degree and angle of the throttle valve are analyzed theoretically under the condition of constant flow rate. The effect of stiffness and other parameters on the heating system analyzed at the same time. The results show that the valve opening is responsible for the generation of the heat as more heat can be achieved in case of the small opening. Another analysis is made that the angle changed on throttle tip significantly affects the heat effect of the throttle valve. To ensure the stability of the system the stiffness of the throttle valve will be more conductive to ensuring a constant pressure across the valve port. The Matlab software is used to build a mathematical model for a proper analysis on throttle valve on various openings to check the pressure drop relationship with different parameters.
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Firsan, Muhammad, Lukas Kano Mangalla, and La Hasanudin. "Pengujian Eksperimental Perbandingan Konsumsi Bahan Bakar dan Emisi Gas Buang Dengan Beberapa Jenis Bahan Bakar Pada Sepeda Motor." Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin 7, no. 1 (2022): 37. http://dx.doi.org/10.55679/enthalpy.v7i1.24560.

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Air pollution is caused by the activities of motorized vehicles that emit exhaust gas emissions, including CO, CO2, HC, NOX, SOX, and particulates. The purpose of this study was to determine how the effect of fuel variations on the time of fuel consumption and exhaust emissions on motorcycles and to find out how the composition of mixing premium fuel with ethanol affects the time of fuel consumption and exhaust emissions. This study uses 4 types of fuel, namely premium, pertalite, E-5, and E-10 and tested using 3 variations of throttle openings. From the test results, it is found that the most fuel consumption is found in the wide throttle opening on premium fuel = 0.77 L/h. For the results of the lowest CO and HC exhaust emissions found in the wide throttle opening on the E-10 fuel where the emission value of CO = 1.98% and HC = 1425 ppm. So it can be concluded that in comparison with the time of fuel consumption, the higher the throttle opening, the faster the fuel consumption will be and for exhaust gas emissions, the higher the throttle opening, the lower the CO and HC emission values. Mixing premium fuel with ethanol can make the fuel consumption time slower than pure premium and can also reduce the content of CO and HC exhaust emissions.Key words: Fuel, Exhaust emissions, Fuel consumption
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Nussupbekov, B. R., M. S. Ovcharov, E. Z. Oshanov, et al. "Determination of the effects of the diameters of the throttle holes on the fluid flow of an inertial hydrodynamic installation." Bulletin of the Karaganda University "Physics Series" 112, no. 4 (2023): 82–90. http://dx.doi.org/10.31489/2023ph4/82-90.

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In the article, in order to solve environmental problems associated with heating buildings and structures, the methods of converting electrical energy into thermal energy and the processes occurring at the same time are considered. Well-known thermal installations, such as vortex, cavitation, cavitation-vortex, rotary, do not fully meet the requirements of consumers. In these conditions, the search for effective solutions is an urgent task. Such solutions include a method of obtaining thermal energy by creating pressure at the throttle openings by inertia forces of a rotating mass of liquid. To determine the flow of liquid through the throttle holes, an experimental stand was made. With the help of the stand, we determined the flow rate of liquid through throttle holes with a diameter of 1.5, 2, 3 mm. During the experiment, it was found that the larger the diameter of the throttle opening, the higher the fluid flow. However, it is impossible to excessively increase the diameter of the throttle opening, as this will complicate the creation of pressure at the throttle openings. It is found that with an increase in the angular velocity of the rotor, the fluid pressure at the throttle openings increases, and the proportion of fluid flow from the preliminary static pressure in the total flow decreases. It is certain that the preliminary static pressure in the supply line has a significant effect on the flow rate only at low rotor speeds (ω up to = 76 rad / s), and with increasing angular velocity, its influence decreases and the coefficient k tends to 1.
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Zhou, Chang Cheng, and Wei Xu. "Valve Parameters Design and Performance Test of Hydro-Pneumatic Spring with Trapezium Throttle Slice." Advanced Materials Research 44-46 (June 2008): 409–14. http://dx.doi.org/10.4028/www.scientific.net/amr.44-46.409.

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With the mechanics model, the analytic formula of the deformation for the trapezium throttle slice was established. By the vehicle parameters and valve opening velocity, the formula of valve opening pressure was built. Based on this, through the relation of pressure with deformation and flux at valve opening, the design formula of throttle slice thickness and throttle-hole area were established, the influencing factors to the design parameters were analyzed. A practical example of design of hydro-pneumatic spring was given, and the performance test was conducted. The analysis and test results show that the design method is effective and the formulas for throttle slice thickness and throttle-hole area are accurate enough, and have important meaning for the hydro-pneumatic spring design.
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Xu, Jingyuan, Zhanghua Lian, Jian Hu, and Min Luo. "Prediction of the Maximum Erosion Rate of Gas–Solid Two-Phase Flow Pipelines." Energies 11, no. 10 (2018): 2773. http://dx.doi.org/10.3390/en11102773.

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Erosion is one of the important reasons for the thickness decrease and perforation of the pipe walls. Understanding the gas–solid two-phase flow pipe erosion mechanism is the basis for monitoring pipe erosion. According to the structural characteristics and working conditions of the gas–solid two-phase flow pipeline in a gas transmission station, a gas–solid two-phase flow pipe erosion finite element model was established and validated by combining it with field test data. Then, the gas–solid two-phase flow pipeline erosion characteristics under different pressures, solid contents, throttle valve openings, and pipe diameters were studied. On this basis, a maximum erosion rate prediction equation was put forward after verification by using actual wall thickness detection data. Results show the following: (1) The absolute error of the maximum erosion rate between the model results and the test datum is ≤10.75%. (2) The outer cambered surface of the bend after the throttle valve is the most seriously eroded areas. (3) The maximum erosion rate increases with pressure, solid content and throttle valve opening increasing, but, along with the change of the pipe diameter, the maximum erosion rate increases at first and then decreases with pipe diameter increasing for throttle valve openings of 20% and 30%, and it decreases with pipe diameter increasing for a throttle valve opening of 50%. (4) A maximum erosion rate prediction equation, involving pressure, solid content, opening of the throttle valve, and pipe diameter, is proposed and is verified that the absolute percentage error between the prediction equation calculation results and the field test datum is ≤11.11%. It would seem that this maximum erosion rate prediction equation effectively improves the accuracy of predicting the gas–solid two-phase flow pipe erosion rate in a gas transmission station.
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LI, BEIBEI, WENHUA LI, MINGLI JIAO, BINGYANG WANG, and XIUMEI LIU. "ANALYSIS OF CAVITATION CHARACTERISTICS IN THROTTLE VALVE WITH DIFFERENT STRUCTURE PARAMETERS." Journal of Mechanics in Medicine and Biology 17, no. 03 (2016): 1750047. http://dx.doi.org/10.1142/s0219519417500476.

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The pressure and cavitation characteristics of fluid through throttle valves with different structure parameters were investigated numerically using computational fluid dynamics. The mass flow rate, pressure drop, and the volume fraction of the vapor in the single and two-step throttle valve were computed. The cavitation regions were mainly distributed on the top of the valve rod and the corner of the valve seat in both of the different throttle valves. The size of cavitation region at the corner of the channel grows firstly, and then decrease with the decreasing opening degree. Furthermore, the lowest pressure region, as well as the area and strength of cavitation region, in the two-step throttle valve were smaller than a single one at the same opening degree. The formula for equivalent orifice area of throttle valve was derived, in order to explain the effect of opening degree. The results indicated that the two-step throttle has high anti-cavitation capability.
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Kuznetsov, V. S., and V. V. Yarots. "Alternative method of geometric parameters measuring of throttle channels of circular cylindrical shape." Izvestiya MGTU MAMI 9, no. 4-1 (2015): 42–49. http://dx.doi.org/10.17816/2074-0530-67171.

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The use of throttles as elements of control devices in hydraulic drives requires them to ensure the possibility of pressure dependence on the flow of the working fluid of the desired type. To establish this dependence it is necessary to know the area of the opening at the inlet of the throttling passage. However, the direct method to measure the actual value of this area resulting from the manufacture of the throttle channel is not always possible. The article presents the evaluation of the possibility of using the alternative method of determining the area of the entrance to the throttle channel of circu-lar cylindrical shape.
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Deng, Tao, Zhifei Li, and Yanli Yin. "Research on the novel discretized ratio control strategies and hardware-in-the-loop test for continuous variable transmission system." International Journal of Modeling, Simulation, and Scientific Computing 10, no. 03 (2019): 1950012. http://dx.doi.org/10.1142/s1793962319500120.

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Based on traditional continuous control strategy for Continuously Variable Transmission (CVT) ratio, according to the principles of shift control strategy for stepped automatic transmission, the influences of throttle opening and external resistance or vehicle speed on CVT ratio control are analyzed on bumpy road. Under the same variation of external resistance condition, the differences between optimal economic control strategy and optimal dynamic control strategy are discussed. Then, the traditional continuous optimal dynamic and economic control lines are divided into multi-step upshift points. Meanwhile, the corresponding downshift points are set to avoid the interference near shift points. After that, the novel discretized ratio control methods for CVT system are proposed. By respectively discretizing throttle opening and vehicle speed, the discretized ratio control strategy for throttle opening, and the integrated discretized ratio control strategy for throttle opening and vehicle speed are further proposed and simulated. Furthermore, the hardware-in-the-loop (HIL) test system is built to further verify the feasibility and accuracy of discretized ratio control strategies. Both simulation and HIL test results show that the sensitivity of throttle opening and vehicle speed to ratio control is reduced dramatically, the fluctuation of ratio is decreased considerably, the transmission efficiency is increased significantly, and the jerk is declined moderately.
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Book chapters on the topic "Throttle opening"

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Ajunwa, Ifeoma. "Race, Labor, and the Future of Work." In The Oxford Handbook of Race and Law in the United States. Oxford University Press, 2022. http://dx.doi.org/10.1093/oxfordhb/9780190947385.013.25.

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Abstract Amidst the full-throttle optimism surrounding the promise of automation to revolutionize the workplace and transform society for the better, there are concerns about its potential to also widen the gulf of economic inequality, as Dr. Martin Luther King, Jr. warned. While undoubtedly new labor markets and novel work opportunities are created by the technological capability for decentralized management and remote work, the rhetoric around automation tends to elide the disparities between those who enjoy its benefits and those who bear the burden of being its draught horses. This chapter examines how race factors into the demographics of the workforce of the gig economy and other precarious jobs that are creating a planetary labor market—opening up new labor markets in developing nations, but without the same labor protections as those in economically privileged countries. This chapter observes that racial minorities disproportionately perform the precarious work created by the gig economy and that the jobs at danger for full automation, such as retail and care work, are those held by White women and racial minorities. Meanwhile, technological advancements such as automated hiring and wearable technologies also portend that the future of work may have lopsided benefits. Governmental action is necessary to ensure that the future of work is not a dystopia for all workers, but especially for more vulnerable workers of color.
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Conference papers on the topic "Throttle opening"

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Nakase, Yoshihiro, Kenji Kanehara, Kouzi Ohara, Kenichi Yamamoto, and Yoshihiro Miyaji. "Flow Noise Reduction upon Quick Opening the Throttle." In SAE 2001 Noise & Vibration Conference & Exposition. SAE International, 2001. http://dx.doi.org/10.4271/2001-01-1429.

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Sahoo, B. B., U. K. Saha, N. Sahoo, and P. Prusty. "Analysis of Throttle Opening Variation Impact on a Diesel Engine Performance Using Second Law of Thermodynamics." In ASME 2009 Internal Combustion Engine Division Spring Technical Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/ices2009-76069.

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The fuel efficiency of a modern diesel engine has decreased due to the recent revisions to emission standards. For an engine fuel economy, the engine speed is to be optimum for an exact throttle opening (TO) position. This work presents an analysis of throttle opening variation impact on a multi-cylinder, direct injection diesel engine with the aid of Second Law of thermodynamics. For this purpose, the engine is run for different throttle openings with several load and speed variations. At a steady engine loading condition, variation in the throttle openings has resulted in different engine speeds. The Second Law analysis, also called ‘Exergy’ analysis, is performed for these different engine speeds at their throttle positions. The Second Law analysis includes brake work, coolant heat transfer, exhaust losses, exergy efficiency, and airfuel ratio. The availability analysis is performed for 70%, 80%, and 90% loads of engine maximum power condition with 50%, 75%, and 100% TO variations. The data are recorded using a computerized engine test unit. Results indicate that the optimum engine operating conditions for 70%, 80% and 90% engine loads are 2000 rpm at 50% TO, 2300 rpm at 75% TO and 3250 rpm at 100% TO respectively.
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He, Zuqing, Jianguo Zhao, Haotian Zheng, et al. "Research on the Control Law of Balanced Oil Production of the Fluid Control Valve in Horizontal Section and a Case Analysis." In International Petroleum Technology Conference. IPTC, 2024. http://dx.doi.org/10.2523/iptc-23501-ms.

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Abstract The existing balanced production model does not consider the characteristics of the fluid control valve and the influence of various factors on the opening, resulting in the lack of theoretical support or basis for the throttling control of the fluid control valve. Therefore, proposed a trapezoidal throttle valve with a large throttle differential pressure and anti-choking. On this basis, established calculation model of the flow rate and throttle pressure for horizontal well based on fluid control valves. Next, evaluated the throttling effect of the single-segment fluid control valve. Finally, analyzed the law of influence of the opening of fluid control valves at different positions in horizontal well on flow rate and throttle pressure of natural gas. It found that the maximum throttling differential pressure of the trapezoidal orifice reaches 0.395MPa, which is 18.98% larger than that of the traditional rectangular orifice. To achieve balanced gas production, the opening of the fluid control valve from the toe end to the heel end gradually decreases. The opening decreases with the increase of the differential pressure of each segment, and the maximum decrease is about 58.38%. The opening increases with the increase of valve distance, and the maximum increase is about 1.25%. Based on the flow rate and pressure model, a case is analyzed by dichotomy. After 5 times of adjustment, the difference between the production proportion of each production segment and the average production proportion is less than 2.7 %, and the balanced production is achieved. This case analysis provides an example basis for the previous theory and numerical simulation. The research results provide a theoretical basis for the fluid control opening control of horizontal wells and provide ideas for balanced gas production.
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Ma, Panwei, Quanmin Niu, Huihuang Mao, Qiang Jia, and Xin Liu. "Simulation of Fuzzy Control System for Unmanned Aerial Vehicle Engine Throttle Opening." In 2018 3rd International Conference on Mechanical, Control and Computer Engineering (ICMCCE). IEEE, 2018. http://dx.doi.org/10.1109/icmcce.2018.00089.

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Wang, Peng, Yingzheng Liu, Zhiqiang Hu, and Sihua Xu. "Rapid Close of a Butterfly Valve Placed in a Curved Channel: A Computational Study of Unsteady Steam Flow and Aerodynamic Torque." In ASME Turbo Expo 2016: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/gt2016-56065.

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The transient steam flow inside a curved channel, which is embedded with dual butterfly valves (stop valve & throttle valve), was numerically simulated when the throttle valve was rapidly closed. Two cases with different closing time were particularly compared in terms of the instantaneously varying flow pattern and aerodynamic torque, i.e., 0.5 s and 1.0 s; as the benchmark cases, the flows at different opening angles of the valve disk were also simulated for comparison. To accurately capture the transient flow, a total of 30 meshes corresponding to different opening angles of the throttle valve’s disk were preliminarily built by using ANSYS ICEM CFD 14.0, while mesh deformation and remeshing methods were used as Dynamic Mesh model to get the consecutively updated mesh. The SST model was chosen as turbulence model and ANSYS CFX 14.0 Software Package was used to solve the flow field. The results showed that rapid close of the throttle valve would lead to an overall flow imbalance between the inlet and the outlet, which was deteriorated with the decrease in the closing time.
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Chatlatanagulchai, Withit, Kittipong Yaovaja, Shinapat Rhienprayoon, and Krisada Wannatong. "Air-Fuel Ratio Regulation with Optimum Throttle Opening in Diesel-Dual-Fuel Engine." In International Powertrains, Fuels & Lubricants Meeting. SAE International, 2010. http://dx.doi.org/10.4271/2010-01-1574.

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Rose, Dean, Nicos Ladommatos, and Richard Stone. "In-Cylinder Mixture Excursions in a Port-Injected Engine During Fast Throttle Opening." In International Congress & Exposition. SAE International, 1994. http://dx.doi.org/10.4271/940382.

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Zhu, Yongxin, Yongfu Li, and Shuyou Yu. "Nonlinear Longitudinal Control for Vehicle Platoon Considering the Effect of Electronic Throttle Opening Angle." In 2020 Chinese Control And Decision Conference (CCDC). IEEE, 2020. http://dx.doi.org/10.1109/ccdc49329.2020.9164128.

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B, Ashok, S. Denis Ashok, and C. Kavitha. "Closed Loop Throttle Opening Angle Estimation Strategy by Considering Torque Demands from SI Engine." In International Conference on Advances in Design, Materials, Manufacturing and Surface Engineering for Mobility. SAE International, 2018. http://dx.doi.org/10.4271/2018-28-0079.

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Manz, P. W. "Influence of a Rapid Throttle Opening on the Transient Behaviour of an Otto Engine." In International Fuels & Lubricants Meeting & Exposition. SAE International, 1992. http://dx.doi.org/10.4271/922234.

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