DETAIL ENGINE FRICTION ESTIMATION USING EXPERIMENTALLY-SIMULATION APPROACH
|
|
- Bertina Short
- 5 years ago
- Views:
Transcription
1 XLVII. INTERNATIONAL SCIENTIFIC CONFERENCE OF THE CZECH AND SLOVAK UNIVERSITIES AND INSTITUTIONS DEALING WITH RESEARCH OF INTERNAL COMBUSTION ENGINES SEPTEMBER 5-6, 2016 BRNO, CZECH REPUBLIC BRNO UNIVERSITY OF TECHNOLOGY, FACULTY OF MECHANICAL ENGINEERING INSTITUTE OF AUTOMOTIVE ENGINEERING DETAIL ENGINE FRICTION ESTIMATION USING EXPERIMENTALLY-SIMULATION APPROACH Miloslav Emrich 1, Michal Takáts 2 Abstract Higher mechanical efficiency of the combustion engine and lower energy consumption of the engine accessories helps to pass latest demands on CO2 emissions reduction. This article describes experimentally-simulation approach to estimate particular friction losses of the engine cranktrain. Single cylinder research engine was used as source of experimental data for model calibration. Commercial software GT-Suite by Gamma Technologies was used for detailed friction losses calculation. 1. INTRODUCTION New demands for lower CO2 emissions can be achieved by combination of highly efficient engines, hybridization and energy recuperation, lower mass and better aerodynamics of new vehicles. Increase of Engine efficiency is achieved by downsizing, down speeding, combustion process optimization, friction losses reduction etc. Increase in engine specific power by downsizing leads to higher load of components and influences friction losses. Prediction of friction losses by numerical simulation can be used in the early stage of new engine design to find the best compromise between the engine load, speed and mechanical efficiency. The goal of this work is to estimate in detail partial friction losses of a real single cylinder diesel engine. Experimental results were used for calibration of the mathematical model made that was created in commercial software GT-Suite. 2. BODY OF PAPER Single cylinder research diesel engine AVL (Bore 85mm, Stroke 90mm, DOHC, 1 st order balancers) was used as source of calibrating data. The test bed is 1 Miloslav Emrich, Czech Technical University in Prague, Faculty of Mechanical Engineering, Vehicle Center of Sustainable Mobility, Přílepská 1920, Roztoky, Czech Republic, Miloslav.Emrich@fs.cvut.cz 2 Michal Takáts, Czech Technical University in Prague, Faculty of Mechanical Engineering, Vehicle Center of Sustainable Mobility, Přílepská 1920, Roztoky, Czech Republic, Michal.Takats@fs.cvut.cz
2 equipped with an external source of pressurized oil and cooling water including conditioning system. These units kept temperatures in narrow limits set by user, which is very important especially in case of the oil temperature. External compressor can be used for overboosting of the engine. There are only two accessories powered by the engine common rail pump and 1st order balancers. The test bed is equipped with the low and high speed data acquisition system. The low speed DAQ is used for measuring of pressures and temperatures of oil, water, fuel, air, and exhaust gasses in time domain. The high speed DAQ is used for measuring in-cylinder pressure, intake and exhaust manifold pressure (TPA), actual torque and speed irregularity. These data are saved with the dependency on the crank angle Experimental results The engine was performed under full load, partial load and under motored condition including disconnection of accessories. All measurement were performed in three various RPM (1000, 1700, 2400), some also at 3100 RPM. Description of experiments covers Table 1. Table 1: Description of Experiments Common Rail Pump CommonRail replaced by Pulley Valvetrain and CommonRail Belt Balancers with Belt OverBoost Oil and Water Temperatures [degc] Friction mean effective pressure (FMEP) was evaluated (1) as the diference between the indicated mean effective pressure (IMEP) and the brake mean effective pressure (BMEP). High speed in-cylinder pressure measuring was used for IMEP (2) estimation as the mean value over 200 cycles. Piezoresistiv sensor in the intake port was used for zero level correction of the in-cylinder pressure. TDC was estimated under motored conditions with the loss angle 0,9 deg for each RPM. BMEP is calculated from engine torque (3). FMEP = IMEP BMEP (1) p dv IMEP (2) V cycle Z Full Load Curve 50, 70, 90 Part Load Curve (IMEP=4 bar) 50, 70, 90 Motored 50, 70, 90 Motored_without_CR 50, 70, 90 Motored_without_CR_overboosted 90 Motored_without_CR&VT 50, 70, 90 4 Mt BMEP V Z (3) (p actual in-cylinder pressure, VZ engine displacement 511 cm 3 ; Mt engine torque) New Castrol 5W-40 was used for all experiments. Oil viscosity has significant influence on friction losses of the engine. For this reason, the oil and water temperature was held on the same constant value during measurement by external conditioning units. RPM dependency of FMEP measured at 90degC (oil and water) is in Figure 1. Reasonable results were obtained under fired conditions (continuous lines) higher RPM and
3 higher load causes increase of friction. The same results were obtained at motored conditions (dashed lines). The engine was also motored with supercharging, pressure in the intake manifold was 1.7 bar and 2.2 bar absolutely. External compressor unit with the steady state vessel was used for this purpose. Figure 1 also shows influence of component disconnecting. Common rail pump was replaced by freewheel pulley with two low friction ball-bearings (line: Motored, NO CR). The lowest curve shows FMEP for motored engine without any accessories except 1st order balancers (connected all the time). In this experiment, the timing belt was removed and the valves were fixed in their closed positions. Figure 1: FMEP at constant temperature of oil and water (90 degc) Figures 2 and 3 show FMEP vs. RPM as a temperature dependency under motored and fired conditions. Figure 4 describes calculated FMEP for valvetrain and for Commonrail pump. These values are inaccurate because they were calculated as the difference of two high numbers motored engine and motored engine with removed CR pump. Moreover, inconsiderable energy for fuel compression during combustion had to be neglected. Other solution was not available at the moment, but these components will be measured separately at specialized test benches in the near future. Figure 2: Motored Engine at various temperatures, case of uncoupled Common Rail Pump and Valvetrain
4 Figure 3: FMEP for engine under two loads at various oil and water temperatures Figure 4: Valvetrain and CommonRail FMEP evaluated from experimental data Measurement uncertainty Measurement uncertainty (MU) is very often neglected and experimental results are published without calculation or discussion about this issue. Experimental results are expected to show engine FMEP dependency on the temperature, load and speed. FMEP is obtained as the difference between two large values (1) which principally leads to high uncertainty. Discussion can be split into IMEP and BMEP uncertainty. IMEP uncertainty is influenced by accuracy of piezoelectric pressure transducer (temperature drift, linearity), its position in cylinder, accuracy of piezoelectric amplifier, voltage transducer and TDC determination. There is very small potential for improvements, because very accurate components of this measurement chain were used. IMEP uncertainty was qualifiedly estimated as uimep=5 kpa. BMEP is calculated from the engine torque (3). Torque measurement uncertainty using torque flange is influenced by temperature effects on the zero signal, temperature effect on the sensitivity, hysteresis, linearity deviation, repeatability, reproducibility, determination of sensitivity, mechanical remanence (hysteresis of the zero signal), parasitic loads, rotational speed, and adaptation parts [4]. Table 2 contains torque flange operation parameters, distribution factor and sectional measurement uncertainty calculated according to [4]. Total MU is calculated as a root of sum of second power sectional measurement uncertainties.
5 The main result is total torque measurement uncertainty umt=1.15 Nm in operational area ( Nm). Note: Torque required for motoring the engine without accessories is approx. 4.5 Nm. Table 2: Torque measurement uncertainty for torque flange HBM T40 Very simplified FMEP uncertainty estimation can be done base on equation (5). This equation is used for calculation of indirectly measured quantity in case when only one measurement is performed. It consider only uncertainty B-type, uncertainty A-type is omitted. u y = ( y ) 2 u 2 X 1B + ( y ) 2 2 u 1 X 2B (5) 2 where uy is combined uncertainty; X1, X2 are measured quantities (in our case IMEP and torque Mt); u1b and u2b are standard measurement uncertainty of quantities X1 and X2. u FMEP = ( FMEP IMEP )2 u IMEP 2 + ( FMEP Mt )2 2 u Mt (6) Numerical result of equation (6) is total measurement uncertainty ufmep=19,4 kpa. Extended measurement uncertainty with confidence interval 95,45% (coverage factor=2) is ufmep=38,8 kpa. Measurement accuracy can by improved by torque flange with lower range, holding ambient temperature close to the reference value 23 degc and of course minimizing parasitic loads. Example: using Torque flange 200Nm at ambient temperature 23 degc leads to half extended measurement uncertainty ufmep=19,8 kpa GT-SUITE Friction model GT-Suite is a software product of Gamma Technologies, LLC. It consists of preprocessor, processor and postprocessor. Graphical interface is used to build models in pre-processor (Figure 5). Presented friction predictive mechanical model consists of rigid bodies, beams and joints. Differential equations are numerically solved using fifth order explicit Runge-Kutta method. The time step changes throughout the simulation
6 for the solution of a mechanical system. The purpose of the adaptive time step control is to achieve minimum computational time while maintaining the desired solution accuracy. The model convergence is very fast, solution time is usually in the range of 1.5 and 2 minutes per each case. Check [1] for detailed description of solution methods. Figure 5: Mathematical model in GT-Suite graphical pre-processor The model consists of main mechanical parts and friction couples. Fly-wheel is connected through a virtual shaft (consisting of rod and two rubber elements) to the dynamometer with constant angular speed. Torsional stiffness and Torsional Damping Coefficient was set base on real shaft parameters. This configuration allows to simulate speed irregularity of the engine (Figure 6). The model load is described by measured in-cylinder pressure. Control elements (Gain and Delay) were used to delay and reduce in-cylinder pressure acting to piston rings. Forty percent of in-cylinder pressure acts on the second ring with the offset of 90 degrees CA. The main geometry and mass parameters were measured or obtained from the testbed supplier. There are geometrical parameters generally not measurable during engine operation, such as actual piston shape, cylinder bore distortion, actual local components and oil temperatures etc. Bore distortion was chosen base on results published in [3]. The piston skirt shape was chosen as a perfect cylinder. Detailed description of solved equations would exceed allowed article size. Only basic assumptions and main equations will be described here Journal Bearings Bearing Oil Film Calculations are based on Mobility Approach. It means that known forces are used to calculate states. Vibrations and secondary motions are ignored and transmitted forces are obtained from rigid-body kinematic solutions with perfect joints. Reynolds equation is solved for varying eccentricity and load vector Piston Rings The core functionality for the lubrication-friction model includes solution of equations governing ring cross-section radial and toroidal twist motions, ring oil film hydrodynamics and ring-cylinder metal-to-metal (asperity) contact pressures.
7 Equations for radial force and toroidal moment balances on the ring cross-section are solved, in order to predict its radial and toroidal twist motions, and the instantaneous film thickness. The Reynolds equation, governing the hydrodynamics of the oil film between the ring face and the cylinder, is solved for the oil film pressure distribution, and (through its integration over the ring face) the force and moment on the ring cross-section due to the oil film pressure. Equations for the Greenwood-Tripp [2] asperity contact model are solved, with the same resolution as the Reynolds equation, for the distribution of asperity contact pressure distribution on the ring face, and (through its integration over the ring face) the force and moment on the ring cross-section due to the asperity contact pressure. The effect of surface roughness on oil film hydrodynamics is modeled through calculation and application of the Patir-Cheng pressure and shear flow (correction) factors in the Reynolds equation. A fast-running, simplified ring-bore (elastic) conformability analysis, is performed to estimate the fraction of bore circumference which "carries" the ring load, and is used as an "attenuation" factor for the cylinder reactions in ring cross-section force and moment balances. Axial motions (up-down) of the rings within their grooves have also been left outside the model, as their effect on ring friction is indirect and thought to be less significant Piston Skirt GT-SUITE allows modelling of lubrication and friction of the piston skirt against cylinder bore at a level of fidelity required for prediction of skirt friction. The core functionality for the lubrication-friction model includes solution of equations governing piston thrust and rotation motions, skirt oil film hydrodynamics and skirt-cylinder metal-to-metal (asperity) contact pressures. Equations for lateral force and rotation moment on the piston are solved, in order to predict its eccentricity and tilt motions, and the instantaneous film thickness. Solution of the Reynold equation including effect of surface roughness is mostly same as for piston rings. A skirt deformation is omitted in this case Model optimization Presented model was built based on real known geometry, masses and other known parameters. A lot of sensitivity analysis was done to check the influence on results. Unknown parameters were chosen from recommended values. Only one parameter optimization was run to achieve target FMEP. The ring oil film temperature was optimization variable. Optimized oil ring temperature was limited to expected range 91 degc to 169 degc. Final values were linearized and partial results are presented in Figure 7. The skirt oil film temperature was set as constant to 92 degc, in case of the oil sump temperature 90 C and 65 degc, in case of the oil sump temperature 50 degc. Coincidence of measured and simulated speed irregularity was checked to confirm validity of the model (Figure 6). Predicted FMEP compared with experimental data is presented in Figure 8 and Figure 9. Very good coincidence was achieved at higher speed. The biggest difference is at 1000 RPM, but these differences can be covered with measurement uncertainty.
8 Figure 6: Comparison of engine speed irregularity Figure 7: Ring Oil Film Temperature (Oil Sump temperature 90 degc) Figure 8: Comparison of experimental data and numerical simulation results (oil and water 50degC) 2.4. Results Figure 9: Comparison of experimental data and numerical simulation results (oil and water 90degC) Total Friction losses and share losses are presented in Figure 10. This chart is a combination of simulated and measured data (valvetrain and commonrail pump losses obtained from experiments only). Detail share friction at 2400 RPM and full load are presented in pie chart (Figure 11).
9 Figure 10: Friction Losses and share Losses combination experiment and simulation Figure 11: Detail share losses at 2400 RPM and Full Load These results correspond with commonly published values. Piston rings and piston skirt share is 55% of all losses. Bearings share is approximately 23% and the valvetrain and commonrail pump accounts for the remaining 22%. Other common accessories, such as the oil and water pump, alternator, AC compressor were not covered in this calculation. Various Crank Angle dependency data are also available in results. As an example total Friction Power and Force of piston rings is presented in Figure 12 and Figure 13. Integral value of total friction power presented in Figure 12 is 260W. Hydrodynamics lubrication is minimized (under 10%) at this regime due to high load and low speed. Figure 12: Friction Power loss of piston rings at 1000 RPM, full load, 90degC
10 Figure 13: Total Friction Force of piston rings at 1000 RPM, full load, 90degC 3. CONCLUSION Simple numerical model has been calibrated base on experimental data measured on single cylinder research engine under various load and temperature conditions. It has been found very good coincidence. This model has very fast computation time under two minutes per case. This kind of presented model seems to be suitable as part of GT-Suite thermodynamical models, where empirical equation like Chen-Flynn is often used. This empirical equation predicts friction losses base on maximal combustion pressure and mean piston speed only. These parameters are not able to capture other important influences on friction losses of the combustion engine unlike presented friction prediction model. Moreover thermodynamical model can be source of boundary conditions for friction model, especially temperatures of piston, piston rings and cylinder which influences oil temperature. This ideas of combination thermodynamical and mechanical model will be studied in close future. 4. ACKNOWLEDGEMENT This research has been realized using the support of Ministry of Education, Czech Republic, research program Národní program udržitelnosti I NPU I (LO1311), project MŠMT-7778/2014. This support is gratefully acknowledged. This research has been realized using the support of EU Regional Development Fund in OP R&D for Innovations (OP VaVpI) and Ministry for Education, Czech Republic, project # CZ.1.05/2.1.00/ Acquisition of Technology for Vehicle Center of Sustainable Mobility. This support is gratefully acknowledged. 5. REFERENCES [1] GT-SUITE Mechanics Theory Manual ver.7.4. Gamma Technologies, Inc [2] Greenwood, I. and Tripp, J.H. (1971). The Contact of Nominally Flat Surfaces", Proc. I. MechE, Vol 185, pp [3] Lombardi A. A Study of Cylinder Bore Distortion in V6 Aluminium Alloy Engine Blocks. Master of Applied Science thesis. Ryerson University, Toronto, Canada [4] Wegener, G. and Andrae, J., 2006, "Measurement uncertainty of torque measurements with rotating torque transducers in power test stands", Measurement, Vol. 40, Issues 7/8, pp
MARINE FOUR-STROKE DIESEL ENGINE CRANKSHAFT MAIN BEARING OIL FILM LUBRICATION CHARACTERISTIC ANALYSIS
POLISH MARITIME RESEARCH Special Issue 2018 S2 (98) 2018 Vol. 25; pp. 30-34 10.2478/pomr-2018-0070 MARINE FOUR-STROKE DIESEL ENGINE CRANKSHAFT MAIN BEARING OIL FILM LUBRICATION CHARACTERISTIC ANALYSIS
More informationMulti Body Dynamic Analysis of Slider Crank Mechanism to Study the effect of Cylinder Offset
Multi Body Dynamic Analysis of Slider Crank Mechanism to Study the effect of Cylinder Offset Vikas Kumar Agarwal Deputy Manager Mahindra Two Wheelers Ltd. MIDC Chinchwad Pune 411019 India Abbreviations:
More informationPREDICTION OF PISTON SLAP OF IC ENGINE USING FEA BY VARYING GAS PRESSURE
PREDICTION OF PISTON SLAP OF IC ENGINE USING FEA BY VARYING GAS PRESSURE V. S. Konnur Department of Mechanical Engineering, BLDEA s Engineering College, Bijapur, Karnataka, (India) ABSTRACT The automotive
More informationAPPLICATION OF A NEW TYPE OF AERODYNAMIC TILTING PAD JOURNAL BEARING IN POWER GYROSCOPE
Colloquium DYNAMICS OF MACHINES 2012 Prague, February 7 8, 2011 CzechNC APPLICATION OF A NEW TYPE OF AERODYNAMIC TILTING PAD JOURNAL BEARING IN POWER GYROSCOPE Jiří Šimek Abstract: New type of aerodynamic
More informationInfluence of Cylinder Bore Volume on Pressure Pulsations in a Hermetic Reciprocating Compressor
Purdue University Purdue e-pubs International Compressor Engineering Conference School of Mechanical Engineering 2014 Influence of Cylinder Bore Volume on Pressure Pulsations in a Hermetic Reciprocating
More informationComparing FEM Transfer Matrix Simulated Compressor Plenum Pressure Pulsations to Measured Pressure Pulsations and to CFD Results
Purdue University Purdue e-pubs International Compressor Engineering Conference School of Mechanical Engineering 2012 Comparing FEM Transfer Matrix Simulated Compressor Plenum Pressure Pulsations to Measured
More informationResearch in hydraulic brake components and operational factors influencing the hysteresis losses
Research in hydraulic brake components and operational factors influencing the hysteresis losses Shreyash Balapure, Shashank James, Prof.Abhijit Getem ¹Student, B.E. Mechanical, GHRCE Nagpur, India, ¹Student,
More informationNumerical Investigation of Diesel Engine Characteristics During Control System Development
Numerical Investigation of Diesel Engine Characteristics During Control System Development Aleksandr Aleksandrovich Kudryavtsev, Aleksandr Gavriilovich Kuznetsov Sergey Viktorovich Kharitonov and Dmitriy
More informationROTATING MACHINERY DYNAMICS
Pepperdam Industrial Park Phone 800-343-0803 7261 Investment Drive Fax 843-552-4790 N. Charleston, SC 29418 www.wheeler-ind.com ROTATING MACHINERY DYNAMICS SOFTWARE MODULE LIST Fluid Film Bearings Featuring
More informationModeling of Engine Block and Driveline Vibration as Affected by Combustion
Modeling of Engine Block and Driveline Vibration as Affected by Combustion Gamma Technologies, Inc 2002 GT-SUITE User Conference October 2002 Introduction Engine is suspended in the vehicle frame on several
More informationSimulation of Performance Parameters of Spark Ignition Engine for Various Ignition Timings
Research Article International Journal of Current Engineering and Technology ISSN 2277-4106 2013 INPRESSCO. All Rights Reserved. Available at http://inpressco.com/category/ijcet Simulation of Performance
More informationInfluence of Internal Combustion Engine Parameters on Gas Leakage through the Piston Rings Area
Modern Mechanical Engineering, 2017, 7, 27-33 http://www.scirp.org/journal/mme ISSN Online: 2164-0181 ISSN Print: 2164-0165 Influence of Internal Combustion Engine Parameters on Gas Leakage through the
More informationInfluence of sliding surface roughness and oil temperature on piston ring pack operation of an automotive IC engine
IOP Conference Series: Materials Science and Engineering PAPER OPEN ACCESS Influence of sliding surface roughness and oil temperature on piston ring pack operation of an automotive IC engine To cite this
More informationSIMULATION AND EVALUATION OF ENGINE FRICTION EUROPEAN GT CONFERENCE, FRANKFURT/MAIN, OCTOBER 9TH, 2017
SIMULATION AND EVALUATION OF ENGINE FRICTION EUROPEAN GT CONFERENCE, FRANKFURT/MAIN, OCTOBER 9TH, 2017 Prof. Dr.-Ing. Peter Steinberg, BTU Cottbus M.Sc. Oleg Krecker, PhD candidate, BMW AGENDA 1 2 3 4
More informationOPTIMIZATION STUDIES OF ENGINE FRICTION EUROPEAN GT CONFERENCE FRANKFURT/MAIN, OCTOBER 8TH, 2018
OPTIMIZATION STUDIES OF ENGINE FRICTION EUROPEAN GT CONFERENCE FRANKFURT/MAIN, OCTOBER 8TH, 2018 M.Sc. Oleg Krecker, PhD candidate, BMW B.Eng. Christoph Hiltner, Master s student, Affiliation BMW AGENDA
More informationSIMULATION OF AUTOMOTIVE ENGINE IN LOTUS SIMULATION TOOLS
SIMULATION OF AUTOMOTIVE ENGINE IN LOTUS SIMULATION TOOLS Ing. Branislav Duleba, PhD. Technical University of Kosice Faculty of mechanical engineering Institute of Technologies and Management Masiarska
More informationEXHAUST BRAKE SYSTEM MODEL AND TORQUE SIMULATION RESULTS ON A DIESEL SINGLE-CYLINDER ENGINE
EXHAUST BRAKE SYSTEM MODEL AND TORQUE SIMULATION RESULTS ON A DIESEL SINGLE-CYLINDER ENGINE Manolache-Rusu Ioan-Cozmin Ștefan cel Mare University of Suceava, 13 Universității, 720229, Suceava, Romania,
More informationCamshaft Torque Analysis of Diesel Engine
International Journal of Current Engineering and Technology E-ISSN 2277 4106, P-ISSN 2347 5161 2017 INPRESSCO, All Rights Reserved Available at http://inpressco.com/category/ijcet Research Article Swapnil
More informationEmissions predictions for Diesel engines based on chemistry tabulation
Emissions predictions for Diesel engines based on chemistry tabulation C. Meijer, F.A. Tap AVL Dacolt BV (The Netherlands) M. Tvrdojevic, P. Priesching AVL List GmbH (Austria) 1. Introduction It is generally
More informationCombining Optimisation with Dymola to Calibrate a 2-zone Predictive Combustion Model.
Combining Optimisation with Dymola to Calibrate a 2-zone Predictive Combustion Model. Mike Dempsey Optimised Engineering Design Conference 2016 Claytex Services Limited Software, Consultancy, Training
More informationDesign and Stress Analysis of Crankshaft for Single Cylinder 4-Stroke Diesel Engine
Design and Stress Analysis of Crankshaft for Single Cylinder 4-Stroke Diesel Engine Amit Solanki #1, Jaydeepsinh Dodiya #2, # Mechanical Engg.Deptt, C.U.Shah University, Wadhwan city, Gujarat, INDIA Abstract
More informationStudying Turbocharging Effects on Engine Performance and Emissions by Various Compression Ratios
American Journal of Energy and Power Engineering 2017; 4(6): 84-88 http://www.aascit.org/journal/ajepe ISSN: 2375-3897 Studying Turbocharging Effects on Engine Performance and Emissions by arious Compression
More informationInternational Conference on Mechanics, Materials and Structural Engineering (ICMMSE 2016)
International Conference on Mechanics, Materials and Structural Engineering (ICMMSE 2016) Comparison on Hysteresis Movement in Accordance with the Frictional Coefficient and Initial Angle of Clutch Diaphragm
More informationStructural Analysis Of Reciprocating Compressor Manifold
Purdue University Purdue e-pubs International Compressor Engineering Conference School of Mechanical Engineering 2016 Structural Analysis Of Reciprocating Compressor Manifold Marcos Giovani Dropa Bortoli
More informationA STUDY OF THE CENTRIFUGAL COMPRESSOR DISCHARGE PIPELINE CONSTRAINED OSCILLATION. KIRILL SOLODYANKIN*, JIŘÍ BĚHAL ČKD KOMPRESORY, a.s.
A STUDY OF THE CENTRIFUGAL COMPRESSOR DISCHARGE PIPELINE CONSTRAINED OSCILLATION KIRILL SOLODYANKIN*, JIŘÍ BĚHAL ČKD KOMPRESORY, a.s. Abstract: The paper presents a solution of a pipeline constrained oscillation
More informationMODELING SUSPENSION DAMPER MODULES USING LS-DYNA
MODELING SUSPENSION DAMPER MODULES USING LS-DYNA Jason J. Tao Delphi Automotive Systems Energy & Chassis Systems Division 435 Cincinnati Street Dayton, OH 4548 Telephone: (937) 455-6298 E-mail: Jason.J.Tao@Delphiauto.com
More informationDigital Shaping and Optimization of Fuel Injection Pattern for a Common Rail Automotive Diesel Engine through Numerical Simulation
Digital Shaping and Optimization of Fuel Injection Pattern for a Common Rail Automotive Diesel Engine through Numerical Simulation European GT Conference 2017 - Frankfurt am Main Politecnico di Torino:
More informationDesign and Analysis of a Lightweight Crankshaft for a Racing Motorcycle Engine. Naji Zuhdi, PETRONAS Phil Carden, Ricardo UK David Bell, Ricardo UK
Design and Analysis of a Lightweight Crankshaft for a Racing Motorcycle Engine Naji Zuhdi, PETRONAS Phil Carden, Ricardo UK David Bell, Ricardo UK Contents Introduction Design overview Engine balance Main
More informationENTWICKLUNG DIESELMOTOREN
ENTWICKLUNG DIESELMOTOREN BMW Steyr Diesel Engine Development Center MULTIBODY AND STRUCTURAL DYNAMIC SIMULATIONS IN THE DEVELOPMENT OF NEW BMW 3- AND 4-CYLINDER DIESEL ENGINES Dr. Stefan Reichl, Dr. Martin
More informationINTERCOOLER FOR EXTREMELY LOW TEMPERATURES OF CHARGING
Journal of KONES Powertrain and Transport, Vol. 7, No. 4 200 INTERCOOLER FOR EXTREMELY LOW TEMPERATURES OF CHARGING Emil Toporcer, Peter Tunik University of Žilina, Faculty of Mechanical Engineering Department
More informationModal Analysis of Automobile Brake Drum Based on ANSYS Workbench Dan Yang1, 2,Zhen Yu1, 2, Leilei Zhang1, a * and Wentao Cheng2
7th International Conference on Mechatronics, Computer and Education Informationization (MCEI 2017) Modal Analysis of Automobile Brake Drum Based on ANSYS Workbench Dan Yang1, 2,Zhen Yu1, 2, Leilei Zhang1,
More informationLEVER OPTIMIZATION FOR TORQUE STANDARD MACHINES
LEVER OPTIMIZATION FOR TORQUE STANDARD MACHINES D. Röske, K. Adolf and D. Peschel Torque laboratory Division for Mechanics and Acoustics Phys.-Techn. Bundesanstalt, D-38116 Braunschweig, Germany Abstract:
More informationDynamic Behavior Analysis of Hydraulic Power Steering Systems
Dynamic Behavior Analysis of Hydraulic Power Steering Systems Y. TOKUMOTO * *Research & Development Center, Control Devices Development Department Research regarding dynamic modeling of hydraulic power
More informationDEVELOPMENT OF COMPRESSED AIR POWERED ENGINE SYSTEM BASED ON SUBARU EA71 MODEL CHEN RUI
DEVELOPMENT OF COMPRESSED AIR POWERED ENGINE SYSTEM BASED ON SUBARU EA71 MODEL CHEN RUI A project report submitted in partial fulfillment of the requirements for the award of the degree of Bachelor of
More informationThe Application of Simulink for Vibration Simulation of Suspension Dual-mass System
Sensors & Transducers 204 by IFSA Publishing, S. L. http://www.sensorsportal.com The Application of Simulink for Vibration Simulation of Suspension Dual-mass System Gao Fei, 2 Qu Xiao Fei, 2 Zheng Pei
More informationExperimental Measurement of Frictional Torque in End Pivoted Roller Finger Follower Valve Train
ISBN 978-93-84422-76-9 6th International Conference on Developments in Engineering and Technology (ICDET-2017) Bangkok (Thailand) Feb.6-7, 2017 Experimental Measurement of Frictional Torque in End Pivoted
More informationDesign and Vibrational Analysis of Flexible Coupling (Pin-type)
Design and Vibrational Analysis of Flexible Coupling (Pin-type) 1 S.BASKARAN, ARUN.S 1 Assistant professor Department of Mechanical Engineering, KSR Institute for Engineering and Technology, Tiruchengode,
More informationScroll Compressor Oil Pump Analysis
IOP Conference Series: Materials Science and Engineering PAPER OPEN ACCESS Scroll Compressor Oil Pump Analysis To cite this article: S Branch 2015 IOP Conf. Ser.: Mater. Sci. Eng. 90 012033 View the article
More informationAnalysis of Torsional Vibration in Elliptical Gears
The The rd rd International Conference on on Design Engineering and Science, ICDES Pilsen, Czech Pilsen, Republic, Czech August Republic, September -, Analysis of Torsional Vibration in Elliptical Gears
More informationSCIENTIFIC PROCEEDINGS 2014, Faculty of Mechanical Engineering, STU in Bratislava Vol. 22, 2014, pp , DOI:10.
Keywords: engine tuning, flow coefficient, mathematical model, camshaft Abstract This article deals with the tuning of a mass-produced engine Skoda 781.136B and its rebuilding into a racing engine. The
More informationCrankcase scavenging.
Software for engine simulation and optimization www.diesel-rk.bmstu.ru The full cycle thermodynamic engine simulation software DIESEL-RK is designed for simulating and optimizing working processes of two-
More informationTheoretical and Experimental Investigation of Compression Loads in Twin Screw Compressor
Purdue University Purdue e-pubs International Compressor Engineering Conference School of Mechanical Engineering 2004 Theoretical and Experimental Investigation of Compression Loads in Twin Screw Compressor
More informationMechanical Motion. Control Components. and Subsystems. Understanding How Components Effect System Performance
Mechanical Motion Control Components and Subsystems Understanding How Components Effect System Performance Mechanical Motion Control Components and Subsystems Overview: Bearings Linear Bearing Technologies
More informationA STUDY OF HYDRAULIC RESISTANCE OF VISCOUS BYPASS GAP IN MAGNETORHEOLOGICAL DAMPER
ACTA UNIVERSITATIS AGRICULTURAE ET SILVICULTURAE MENDELIANAE BRUNENSIS Volume 64 134 Number 4, 2016 http://dx.doi.org/10.11118/actaun201664041199 A STUDY OF HYDRAULIC RESISTANCE OF VISCOUS BYPASS GAP IN
More informationINFLUENCE OF CROSS FORCES AND BENDING MOMENTS ON REFERENCE TORQUE SENSORS FOR TORQUE WRENCH CALIBRATION
XIX IMEKO World Congress Fundamental and Applied Metrology September 6 11, 2009, Lisbon, Portugal INFLUENCE OF CROSS FORCES AND BENDING MOMENTS ON REFERENCE TORQUE SENSORS FOR TORQUE WRENCH CALIBRATION
More informationTHE INFLUENCE OF THE MICROGROOVES ON THE HYDRODYNAMIC PRESSURE DISTRIBUTION AND LOAD CARRYING CAPACITY OF THE CONICAL SLIDE BEARING
Journal of KONES Powertrain and Transport, Vol. 19, No. 3 2012 THE INFLUENCE OF THE MICROGROOVES ON THE HYDRODYNAMIC PRESSURE DISTRIBUTION AND LOAD CARRYING CAPACITY OF THE CONICAL SLIDE BEARING Adam Czaban
More informationCHAPTER 4 VARIABLE COMPRESSION RATIO ENGINE WITH DATA ACQUISITION SYSTEM
57 CHAPTER 4 VARIABLE COMPRESSION RATIO ENGINE WITH DATA ACQUISITION SYSTEM 4.1 GENERAL The variable compression ratio engine was developed by Legion brothers, Bangalore, India. This chapter briefly discusses
More informationRelevant friction effects on walking machines
Relevant friction effects on walking machines Elena Garcia and Pablo Gonzalez-de-Santos Industrial Automation Institute (CSIC) 28500 Madrid, Spain email: egarcia@iai.csic.es Key words: Legged robots, friction
More informationFriction and Vibration Characteristics of Pneumatic Cylinder
The 3rd International Conference on Design Engineering and Science, ICDES 214 Pilsen, Czech Republic, August 31 September 3, 214 Friction and Vibration Characteristics of Pneumatic Cylinder Yasunori WAKASAWA*
More informationA Novel Device to Measure Instantaneous Swept Volume of Internal Combustion Engines
Global Journal of Researches in Engineering Vol. 10 Issue 7 (Ver1.0), December 2010 P a g e 47 A Novel Device to Measure Instantaneous Swept Volume of Internal Combustion Engines MURUGAN. R. GJRE -A Classification
More informationTHE ENGINE COMBUSTION ANALYSIS OF NEWLY DEVELOPING DIESEL TRACTOR ENGINE ZETOR Z1727 WITH COMMON-RAIL SYSTEM IN A FIRST FIRING WEEK
THE ENGINE COMBUSTION ANALYSIS OF NEWLY DEVELOPING DIESEL TRACTOR ENGINE ZETOR Z1727 WITH COMMON-RAIL SYSTEM IN A FIRST FIRING WEEK TUNKA LUKAS, CUPERA JIRI Department of Technology and Automobile Transport
More informationDESIGN, DEVELOPMENT AND TESTING OF A FOUR COMPONENT MILLING TOOL DYNAMOMETER
DESIGN, DEVELOPMENT AND TESTING OF A FOUR COMPONENT MILLING TOOL DYNAMOMETER Dandage R. V. 1, Bhatwadekar S.G. 2, Bhagwat M.M. 3 1 Rajendra Mane College of Engineering & Technology, Ambav (Devrukh) 2 KIT
More informationGT-Power Report. By Johan Fjällman. KTH Mechanics, SE Stockholm, Sweden. Internal Report
GT-Power Report By Johan Fjällman KTH Mechanics, SE- 44 Stockholm, Sweden Internal Report Presently in the vehicle industry full engine system simulations are performed using different one-dimensional
More informationAPPLICATION OF A NEW TYPE OF AERODYNAMIC TILTING PAD JOURNAL BEARING IN POWER GYROSCOPE
Engineering MECHANICS, Vol. 19, 2012, No. 5, p. 359 368 359 APPLICATION OF A NEW TYPE OF AERODYNAMIC TILTING PAD JOURNAL BEARING IN POWER GYROSCOPE Jiří Šimek* New type of aerodynamic tilting pad journal
More informationDesign of A New Non-Contact Screw Seal and Determination of Performance Characteristics
Proceedings of the World Congress on Momentum, Heat and Mass Transfer (MHMT 16) Prague, Czech Republic April 4 5, 2016 Paper No. ENFHT 114 DOI: 10.11159/enfht16.114 Design of A New Non-Contact Screw Seal
More informationThe influence of thermal regime on gasoline direct injection engine performance and emissions
IOP Conference Series: Materials Science and Engineering PAPER OPEN ACCESS The influence of thermal regime on gasoline direct injection engine performance and emissions To cite this article: C I Leahu
More informationLoad Analysis and Multi Body Dynamics Analysis of Connecting Rod in Single Cylinder 4 Stroke Engine
IJSRD - International Journal for Scientific Research & Development Vol. 3, Issue 08, 2015 ISSN (online): 2321-0613 Load Analysis and Multi Body Dynamics Analysis of Connecting Rod in Single Cylinder 4
More informationTest rig for rod seals contact pressure measurement
Tribology and Design 107 Test rig for rod seals contact pressure measurement G. Belforte 1, M. Conte 2, L. Mazza 1, T. Raparelli 1 & C. Visconte 1 1 Department of Mechanics, Politecnico di Torino, Italy
More informationReduction of Self Induced Vibration in Rotary Stirling Cycle Coolers
Reduction of Self Induced Vibration in Rotary Stirling Cycle Coolers U. Bin-Nun FLIR Systems Inc. Boston, MA 01862 ABSTRACT Cryocooler self induced vibration is a major consideration in the design of IR
More informationCOMPUTATIONAL MODELING OF HEAVY DUTY TRUCK DRIVESHAFT
COMPUTATIONAL MODELING OF HEAVY DUTY TRUCK DRIVESHAFT Michal Janoušek 1 Summary: The driveline of heavy duty vehicle is an important source of NVH. Prediction of NVH parameters of driveline in construction
More informationChapter 2 Dynamic Analysis of a Heavy Vehicle Using Lumped Parameter Model
Chapter 2 Dynamic Analysis of a Heavy Vehicle Using Lumped Parameter Model The interaction between a vehicle and the road is a very complicated dynamic process, which involves many fields such as vehicle
More informationDesign of Damping Base and Dynamic Analysis of Whole Vehicle Transportation based on Filtered White-Noise GongXue Zhang1,a and Ning Chen2,b,*
Advances in Engineering Research (AER), volume 07 Global Conference on Mechanics and Civil Engineering (GCMCE 07) Design of Damping Base and Dynamic Analysis of Whole Vehicle Transportation based on Filtered
More informationSeals Stretch Running Friction Friction Break-Out Friction. Build With The Best!
squeeze, min. = 0.0035 with adverse tolerance build-up. If the O-ring is made in a compound that will shrink in the fluid, the minimum possible squeeze under adverse conditions then must be at least.076
More information2.61 Internal Combustion Engine Final Examination. Open book. Note that Problems 1 &2 carry 20 points each; Problems 3 &4 carry 10 points each.
2.61 Internal Combustion Engine Final Examination Open book. Note that Problems 1 &2 carry 20 points each; Problems 3 &4 carry 10 points each. Problem 1 (20 points) Ethanol has been introduced as the bio-fuel
More informationPreliminary Study on Quantitative Analysis of Steering System Using Hardware-in-the-Loop (HIL) Simulator
TECHNICAL PAPER Preliminary Study on Quantitative Analysis of Steering System Using Hardware-in-the-Loop (HIL) Simulator M. SEGAWA M. HIGASHI One of the objectives in developing simulation methods is to
More informationTheoretical and Experimental Evaluation of the Friction Torque in Compressors with Straddle Bearings
Purdue University Purdue e-pubs International Compressor Engineering Conference School of Mechanical Engineering 1998 Theoretical and Experimental Evaluation of the Friction Torque in Compressors with
More informationEngine Friction and Lubrication Internal Combustion Engine
Engine Friction and Lubrication 2103471 Internal Combustion Engine Friction Friction refers to the forces acting between mechanical components due to their relative motion and to forces on and by fluids
More information55. Estimation of engine piston system wear using time-frequency method
55. Estimation of engine piston system wear using time-frequency method Marek Flekiewicz 1, Paweł Fabiś 2, Rafał Burdzik 3 Silesian University of Technology, Department of Automotive Vehicle Construction,
More informationIntegrated Simulation of a Truck Diesel Engine with a Hydraulic Engine Braking System
Integrated Simulation of a Truck Diesel Engine with a Hydraulic Engine Braking System N. Brinkert, K. Kanning GT-Suite Users Conference 2008 I want to give you a short presentation about a project we work
More informationStatic Stress Analysis of Piston
Static Stress Analysis of Piston Kevin Agrawal B. E. Student, Mechanical Engineering, BITS Pilani K. K. Birla Goa Campus. AH7-352, BITS Pilani, K. K. Birla Goa Campus, NH 17B, Zuarinagar 403726. Parva
More informationPrediction of Thermal Deflection at Spindle Nose-tool Holder Interface in HSM
Prediction of Thermal Deflection at Spindle Nose-tool Holder Interface in HSM V Prabhu Raja, J Kanchana, K Ramachandra, P Radhakrishnan PSG College of Technology, Coimbatore - 641004 Abstract Loss of machining
More informationFlow Simulation of Diesel Engine for Prolate Combustion Chamber
IJIRST National Conference on Recent Advancements in Mechanical Engineering (RAME 17) March 2017 Flow Simulation of Diesel Engine for Prolate Combustion Chamber R.Krishnakumar 1 P.Duraimurugan 2 M.Magudeswaran
More informationTHE FKFS 0D/1D-SIMULATION. Concepts studies, engineering services and consulting
THE FKFS 0D/1D-SIMULATION Concepts studies, engineering services and consulting r e s e a r c h i n m o t i o n. VEHICLE IN MOTION On the basis of constant engine speeds and loads, the combustion engine
More informationSOME INTERESTING ESTING FEATURES OF TURBOCHARGER ROTOR DYNAMICS
Colloquium DYNAMICS OF MACHINES 2013 Prague, February 5 6, 2013 CzechNC 1. I SOME INTERESTING ESTING FEATURES OF TURBOCHARGER ROTOR DYNAMICS Jiří Šimek Abstract: Turbochargers for combustion engines are
More informationCHECK AND CALIBRATION PROCEDURES FOR FATIGUE TEST BENCHES OF WHEEL
STANDARDS October 2017 CHECK AND CALIBRATION PROCEDURES FOR FATIGUE TEST BENCHES OF WHEEL E S 3.29 Page 1/13 PROCÉDURES DE CONTRÔLE ET CALIBRAGE DE FATIGUE BANCS D'ESSAIS DE ROUE PRÜFUNG UND KALIBRIERUNG
More informationSUCCESSFUL DIESEL COLD START THROUGH PROPER PILOT INJECTION PARAMETERS SELECTION. Aleksey Marchuk, Georgiy Kuharenok, Aleksandr Petruchenko
SUCCESSFUL DIESEL COLD START THROUGH PROPER PILOT INJECTION PARAMETERS SELECTION Aleksey Marchuk, Georgiy Kuharenok, Aleksandr Petruchenko Robert Bosch Company, Germany Belarussian National Technical Universitry,
More informationDevelopment of a Clutch Control System for a Hybrid Electric Vehicle with One Motor and Two Clutches
Development of a Clutch Control System for a Hybrid Electric Vehicle with One Motor and Two Clutches Kazutaka Adachi*, Hiroyuki Ashizawa**, Sachiyo Nomura***, Yoshimasa Ochi**** *Nissan Motor Co., Ltd.,
More informationNumerical Investigation of the Gas Leakage through the Piston-Cylinder Clearance of Reciprocating Compressors
Purdue University Purdue e-pubs International Compressor Engineering Conference School of Mechanical Engineering 2014 Numerical Investigation of the Gas Leakage through the Piston-Cylinder Clearance of
More informationPart Load Engine Performance prediction for a gasoline engine using Neural Networks. Sreekanth R, Sundar S, Rangarajan S, Anand G -System Simulation
Part Load Engine Performance prediction for a gasoline engine using Neural Networks Sreekanth R, Sundar S, Rangarajan S, Anand G -System Simulation CAE-2 System Simulation GT-SUITE User Conference Feb
More informationENERGY ANALYSIS OF A POWERTRAIN AND CHASSIS INTEGRATED SIMULATION ON A MILITARY DUTY CYCLE
U.S. ARMY TANK AUTOMOTIVE RESEARCH, DEVELOPMENT AND ENGINEERING CENTER ENERGY ANALYSIS OF A POWERTRAIN AND CHASSIS INTEGRATED SIMULATION ON A MILITARY DUTY CYCLE GT Suite User s Conference: 9 November
More informationMORSE: MOdel-based Real-time Systems Engineering. Reducing physical testing in the calibration of diagnostic and driveabilty features
MORSE: MOdel-based Real-time Systems Engineering Reducing physical testing in the calibration of diagnostic and driveabilty features Mike Dempsey Claytex Future Powertrain Conference 2017 MORSE project
More informationANALYSIS OF THE INFLUENCE OF OPERATING MEDIA TEMPERATURE ON FUEL CONSUMPTION DURING THE STAGE AFTER STARTING THE ENGINE
ANALYSIS OF THE INFLUENCE OF OPERATING MEDIA TEMPERATURE ON FUEL CONSUMPTION DURING THE STAGE AFTER STARTING THE ENGINE Martin Beran 1 Summary: In Current increase in the automobile traffic results in
More informationDesign and fabrication of a twist fixture to measure torsional stiffness of a pick up chassis
Design and fabrication of a twist fixture to measure torsional stiffness of a pick up chassis Ojo Kurdi 1,2*, Mohd Shukri Yob 3, Awisqarni Haji Ishamuddin 4, Agus Suprihanto 1, Susilo Adi Widyanto 1, Dwi
More informationINFLUENCE OF TEMPERATURE ON THE PERFORMANCE TOOTHED BELTS BINDER MAGNETIC
INFLUENCE OF TEMPERATURE ON THE PERFORMANCE TOOTHED BELTS BINDER MAGNETIC Merghache Sidi Mohammed, Phd Student Ghernaout Med El-Amine, Doctor in industrial automation University of Tlemcen, ETAP laboratory,
More informationDESIGN OF MACHINE ELEMENTS UNIVERSITY QUESTION BANK WITH ANSWERS. Unit 1 STEADY STRESSES AND VARIABLE STRESSES IN MACHINE MEMBERS
DESIGN OF MACHINE ELEMENTS UNIVERSITY QUESTION BANK WITH ANSWERS Unit 1 STEADY STRESSES AND VARIABLE STRESSES IN MACHINE MEMBERS 1.Define factor of safety. Factor of safety (FOS) is defined as the ratio
More informationEfficient and Effective bearing performance evaluation
Efficient and Effective bearing performance evaluation The right software platform for dedicated technical questions, based on the right knowledge and design criteria A typical design process Changes SKF
More informationCOMPARISON OF THE TEMPERATURE DISTRIBUTION IN THE DRY AND WET CYLINDER SLEEVE IN UNSTEADY STATE
Journal of KONES Powertrain and Transport, Vol. 17, No. 3 2010 COMPARISON OF THE TEMPERATURE DISTRIBUTION IN THE DRY AND WET CYLINDER SLEEVE IN UNSTEADY STATE Piotr Gustof, Damian J drusik Silesian University
More informationNumerical and Experimental Research on Vibration Mechanism of Rotary Compressor
Purdue University Purdue e-pubs International Compressor Engineering Conference School of Mechanical Engineering 2018 Numerical and Experimental Research on Vibration Mechanism of Rotary Compressor Zhiqiang
More informationLEAD SCREWS 101 A BASIC GUIDE TO IMPLEMENTING A LEAD SCREW ASSEMBLY FOR ANY DESIGN
LEAD SCREWS 101 A BASIC GUIDE TO IMPLEMENTING A LEAD SCREW ASSEMBLY FOR ANY DESIGN Released by: Keith Knight Kerk Products Division Haydon Kerk Motion Solutions Lead Screws 101: A Basic Guide to Implementing
More informationDevelopment, Implementation, and Validation of a Fuel Impingement Model for Direct Injected Fuels with High Enthalpy of Vaporization
Development, Implementation, and Validation of a Fuel Impingement Model for Direct Injected Fuels with High Enthalpy of Vaporization (SAE Paper- 2009-01-0306) Craig D. Marriott PE, Matthew A. Wiles PE,
More informationKinematic Analysis of the Slider-Crank Mechanism in Automated Vibration Sausage Feeder
5 th World Conference on Applied Sciences, Engineering & Technology 0-04 June 016, HCMUT, Vietnam Kinematic Analysis of the Slider-Crank Mechanism in Automated Vibration Sausage Feeder NGUYễN HồNG NGÂN
More informationEffect of surface texturing on friction under starved lubrication conditions
Effect of surface texturing on friction under starved lubrication conditions FADI ALI SUPERVISOR: prof. Ing. Martin Hartl, Ph.D. Institute of Machine and Industrial Design Department of Machine Design
More informationThermal Stress Analysis of Diesel Engine Piston
International Conference on Challenges and Opportunities in Mechanical Engineering, Industrial Engineering and Management Studies 576 Thermal Stress Analysis of Diesel Engine Piston B.R. Ramesh and Kishan
More informationPrecision Modules PSK
Precision Modules PSK 2 Bosch Rexroth AG Precision Modules PSK R999000500 (2015-12) Identification system for short product names Short product name Example:: P S K - 050 - N N - 1 System = Precision Module
More informationTUNING MAZDA B6 ENGINE FOR SPORTS COMPETITIONS
TUNING MAZDA B6 ENGINE FOR SPORTS COMPETITIONS Ing. LUKÁCS E. 1, doc. Ing. POLÓNI M. CSc. 2 1 Dolné Zahorany 60, 98542 Veľké Dravce, lukacserik@gmail.com 2 Strojnícka fakulta STU v Bratislave, marian.poloni@stuba.sk
More informationCONTENTS. 5 BALANCING OF MACHINERY Scope Introduction Balancing Machines Balancing Procedures
CONTENTS 1 OVERVIEW.....................................................................1-1 1.1 Introduction.................................................................1-1 1.2 Organization.................................................................1-1
More informationINTERCONNECTION POSSIBILITIES FOR THE WORKING VOLUMES OF THE ALTERNATING HYDRAULIC MOTORS
Scientific Bulletin of the Politehnica University of Timisoara Transactions on Mechanics Special issue The 6 th International Conference on Hydraulic Machinery and Hydrodynamics Timisoara, Romania, October
More informationRHOMBUS BRIQUETTING MECHANISM MODELLING
RHOMBUS BRIQUETTING MECHANISM MODELLING Edgars Repsa, Eriks Kronbergs Institute of Mechanics, Faculty of Engineering, Latvia University of Agriculture edgars.repsa@llu.lv, eriks.kronbergs@llu.lv Abstract.
More informationA Simple Approach for Hybrid Transmissions Efficiency
A Simple Approach for Hybrid Transmissions Efficiency FRANCESCO BOTTIGLIONE Dipartimento di Meccanica, Matematica e Management Politecnico di Bari Viale Japigia 182, Bari ITALY f.bottiglione@poliba.it
More informationEMC-HD. C 01_2 Subheadline_15pt/7.2mm
C Electromechanical 01_1 Headline_36pt/14.4mm Cylinder EMC-HD C 01_2 Subheadline_15pt/7.2mm 2 Elektromechanischer Zylinder EMC-HD Short product name Example: EMC 085 HD 1 System = ElectroMechanical Cylinder
More information