Prof. Dr. Semin | Institut Teknologi Sepuluh Nopember (original) (raw)

Papers by Prof. Dr. Semin

Research paper thumbnail of Steady-State and Transient Simulation of Gas Flow Pressure in Intake Port Engine

Research paper thumbnail of In - Cylinder Mass Flow Rate and Gas Species Concentration Simulation of Spark Ignition Engine

Journal of Engineering and Applied Sciences 2 (12), 2007

Research paper thumbnail of Engine Power Calculation Using Air Flow Through Engine from Flowbench Test Flow of Four Stroke Direct Injection Diesel Engines

Research paper thumbnail of Valve Flow Discharge Coefficient Investigation for Intake and Exhaust Port of Four Stroke Diesel

Journal of Engineering and Applied Sciences 2 (12): 1807-1811, 2007

The study presents the effect of the coefficient of discharge of intake and exhaust valve for dir... more The study presents the effect of the coefficient of discharge of intake and exhaust valve for direct injection diesel engine. The main purpose of the present research is to determine the discharge coefficient of
intake and exhaust valves in the engine cylinder head of a 406 cm . The experiment using a flow bench model Superflow SF-1020. It is required to know such discharge coefficients, as a function of lift
and pressure ratio in the mathematical modelling process at each juncture during the open cycle. The obtained
results are dependent on test pressure.

Research paper thumbnail of Valve Flow Discharge Coefficient Investigation for Intake and Exhaust Port of Four Stroke Diesel Engines

Research paper thumbnail of Valve Flow Discharge Coefficient Investigation for Intake and Exhaust Port of Four Stroke Diesel Engines

Journal of Engineering and Applied Sciences 2 (12): 1807-1811, 2007

The study presents the effect of the coefficient of discharge of intake and exhaust valve for dir... more The study presents the effect of the coefficient of discharge of intake and exhaust valve for direct injection diesel engine. The main purpose of the present research is to determine the discharge coefficient of intake and exhaust valves in the engine cylinder head of a 406 cm. The experiment has been conducted using 3 a flow bench model Superflow SF-1020. It is required to know such discharge coefficients, as a function of lift and pressure ratio in the mathematical modelling process at each juncture during the open cycle. The obtained results are dependent on test pressure.

Research paper thumbnail of Nozzle Holes Effect on Unburned Fuel in Injected and In-Cylinder Fuel of Four Stroke Direct Injection Diesel Engine

Research Journal of Applied Sciences 2 (11): 1165-1169, 2007

The fuel nozzle is an important aspect for diesel engine combustion performance. The model of fou... more The fuel nozzle is an important aspect for diesel engine combustion performance. The model of four-stroke direct-injection diesel engines is developed in the research to investigate the injected and in-cylinder fuel diesel engine in unburned fuel effect from the fuel nozzle multi holes geometries. Model and simulation in this research is using GT-POWER from the GTise-6.2 software were specially development for internal combustion engines performance simulation. The selected diesel engine is opened, breakdown and measurement of all its components size to input to the window engines component menu of the model. The investigation results output of the simulation is focuses on nozzle holes effect in unburned fuel in injected and in-cylinder fuel process of diesel engine. The holes nozzles from 1 hole until 10 holes in difference orifice diameter have been examined using GT-POWER model simulation and the results shown that the 5 holes nozzle provided the best burning fuel results in any variation engine speeds.

Research paper thumbnail of Air Flow Analysis of Four Stroke Direct Injection Diesel Engines Based on Air Pressure Input and L/D Ratio

Research Journal of Applied Sciences 2 (11): 1135-1142, 2007

The air flow through engines is equally important to have accurate values for coefficients of dis... more The air flow through engines is equally important to have accurate values for coefficients of discharge through the combinations of valves, ports and ducts of engines. In this air flow analysis is investigated of air flow is desirable for intake flow through the exhaust flow port using SuperFlow Flowbench. The air flow of the diesel engines can be quite measured under steady flow conditions for a range of pressures and valve Lift per Diameter (L/D). This syudy presents experimental results for air flow investigating in the intake and exhaust flow port of four stroke direct injection diesel engines. The airflow measurements and calculation are shown for various pressures, valve Lift per Diameters (L/D) ratio conditions at the intake port pipe to cylinder and cylinder to exhaust port pipe geometries. The result shown that, the increasing pressure input in port flow on fixed valve L/D can increase the air flow through engine cylinder.

Research paper thumbnail of Steady-State and Transient Simulation of Gas Flow Temperature of Intake Port Engine

Journal of Applied Sciences Research, 4(7): 767-777, 2008

The objective of this paper is to investigate the gas flow temperature in the intake port of four... more The objective of this paper is to investigate the gas flow temperature in the intake port of four-stroke direct-injection compression ignition engine using GT-Suite software for steady-state and transient simulation. To investigate and simulate the intake port gas flow temperature profile of compression ignition engine is using GT-Power engine model were developed in this paper. GT-Power is subsystem menu from GT-Suite. The engine model is developed from the real compression ignition engine data and input to software library. In this research, the simulation of engine model is running in variations engine speeds. The simulation output data is collected from the GT-Post results plots and casesRLT in post processing. The simulation results of the intake port engine model are shown the characters in intake port temperature profile of engine in variations engine speeds. The detail performance intake port gas flow temperature is shown in graphs in this paper.

Research paper thumbnail of Study of Correlating a Compression Ignition Engine Model to Plotted Characterization of In-Cylinder Pressure and Temperature Profile

Journal of Applied Sciences Research, 4(6): 658-668, 2008

In-cylinder pressure profile and in-cylinder temperature profile of compression ignition engine i... more In-cylinder pressure profile and in-cylinder temperature profile of compression ignition engine is investigated using computational engine model simulation in this paper. The engine model is developed from the real compression ignition engine data. The software have used in the compression ignition engine model development is GT-POWER, the part of GT-ISE software. In this research, the simulation of engine model is running in variations engine speeds. The engine model output is designed focuses on investigation the correlation of characteristic in-cylinder pressure profile and in-cylinder temperature profile based on variations engine speeds. The simulation output data is collected from the GT-Post results plots in post processing. The results of the engine model simulation are shown the characters in-cylinder engine pressure profile and in-cylinder engine temperature profile of engine in variations engine speeds running. The best performance in-cylinder profile is shown in 3000 rpm engine speed.

Research paper thumbnail of In-Cylinder Flow through Piston-Port Engines Modeling using Dynamic Mesh

Journal of Applied Sciences Research, 4(1): 58-64, 2008

This paper presents numerical study of three-dimensional analysis of two-stroke spark-ignition (S... more This paper presents numerical study of three-dimensional analysis of two-stroke spark-ignition (SI) cross loop-scavenged port. The objective of this study is to investigate the in-cylinder characteristics at motored transient condition. The pressure on in-cylinder and intake port were collected and applied for validation with numerical results for 1400 rpm. The three-dimensional modeling analysis was performed utilizing dynamic mesh method. The prediction of distribution of in-cylinder pressure and mass fraction of gases function of crank angle were discussed. The results shown that the relative error between experimental and numerical less that 2 %.

Research paper thumbnail of Analysis of Engine Speed Effect on Temperature and Pressure of Engine Based on Experiment and Computational Simulation

Journal of Applied Sciences Research, 4(1): 76-83, 2008

This paper is want to explore the in-cylinder pressures and temperature for a single cylinder two... more This paper is want to explore the in-cylinder pressures and temperature for a single cylinder two-stroke spark ignition (SI) engine simulation and validated using cylinder pressure and temperature experiment data. One dimensional analysis is used GT-POWER 6.2 software for computational simulation. These values defined with pressure average and used on simulation analysis. Also include the prediction of effects on the in cylinder pressure and temperature. The research results were validating between measured and calculated shown in graphs in this paper.

Research paper thumbnail of TECHNICAL NOTE EFFECT OF DIRECT INJECTION DIESEL ENGINE CONVERT TO SEQUENTIAL INJECTION CNG ENGINE IN INTAKE PORT GAS FLOW PRESSURE PROFILE

International Journal of Engineering, Transactions B: Application, 2008

The one dimension computational model of a sequential injection engine, which runs on compressed ... more The one dimension computational model of a sequential injection engine, which runs on compressed natural gas (CNG) with spark ignition, is developed for this study, to simulate the performance of gas flow pressure profile, under various speed conditions. The computational model is used to simulate and study of the steady state and transient processes of the intake manifold. The sequential injection CNG engine model is developed using GT-Power software. The size of this model engine is developed from the real diesel engine data and was input into the software's' library. The simulation model engine runs with various speeds from 1000 up to 4000 rpm. The simulation results of the performance with gas flow pressure, in the intake manifold are collected from two data sets; the GT-Post post processing plots for pressure performance versus crank angle, and post processing cases RLT for pressure performance versus engine speed. The simulation results of the intake manifold and the performance of the gas flow pressure profile, with various engine speed, for the CNG sequential injection engine are shown by characters. The Pressure profile of the engine and the numerical accuracy of the model is verified and validated by comparing the average total of the intake manifold pressure, with the measured intake manifold pressure, of a CNG sequential injection engine. The simulation results show that, the conversion of diesel engine to a CNG sequential injection engine with spark ignition will increase the pressure performance in the intake manifold of the engine. ‫ﭼﮑﻴﺪﻩ‬ ‫ﺷـﺪﻩ‬ ‫ﻓـﺸﺮﺩﻩ‬ ‫ﻃﺒﻴﻌﯽ‬ ‫ﮔﺎﺯ‬ ‫ﺗﺮﺗﻴﺒﯽ‬ ‫ﺍﻧﮋﮐﺘﻮﺭ‬ ‫ﺍﯼ‬ ‫ﺟﺮﻗﻪ‬ ‫ﻣﻮﺗﻮﺭ‬ ‫ﺑﻌﺪﯼ‬ ‫ﻳﮏ‬ ‫ﺭﻳﺎﺿﯽ‬ ‫ﻣﺪﻝ‬ (CNG) ‫ﺷـﺒﻴﻪ‬ ‫ﺑـﺮﺍﯼ‬ ‫ﺷﺪ‬ ‫ﺩﺍﺩﻩ‬ ‫ﺑﺴﻂ‬ ‫ﺗﺤﻘﻴﻖ‬ ‫ﺍﻳﻦ‬ ‫ﺩﺭ‬ ‫ﻣﻮﺗﻮﺭ‬ ‫ﺳﺮﻋﺖ‬ ‫ﻣﺨﺘﻠﻒ‬ ‫ﺷﺮﺍﻳﻂ‬ ‫ﺩﺭ‬ ‫ﮔﺎﺯ‬ ‫ﺟﺮﻳﺎﻥ‬ ‫ﻓﺸﺎﺭ‬ ‫ﭘﺮﻭﻓﻴﻞ‬ ‫ﺳﺎﺯﯼ‬. ‫ﺭﻳﺎﺿـﯽ‬ ‫ﻣـﺪﻝ‬ ‫ﺩﺭ‬ ‫ﻣﯽ‬ ‫ﮔﺮﻓﺘﻪ‬ ‫ﻧﻈﺮ‬ ‫ﺩﺭ‬ ‫ﻭﺭﻭﺩﯼ‬ ‫ﻣﺎﻧﻴﻔﻠﺪ‬ ‫ﮔﺬﺭﺍﯼ‬ ‫ﺳﺎﺯﯼ‬ ‫ﺷﺒﻴﻪ‬ ‫ﭘﺮﻭﺳﻪ‬ ‫ﻭ‬ ‫ﻳﮑﻨﻮﺍﺧﺖ‬ ‫ﺣﺎﻟﺖ‬ ‫ﺷﻮﺩ‬. ‫ﻣ‬ ‫ﺗﺮﺗﻴﺒـﯽ‬ ‫ﺍﻧﮋﮐﺘﻮﺭ‬ ‫ﻣﻮﺗﻮﺭ‬ ‫ﺪﻝ‬ CNG ‫ﺍﻓﺰﺍﺭ‬ ‫ﻧﺮﻡ‬ ‫ﮐﻤﮏ‬ ‫ﺑﻪ‬ GT-Power ‫ﺷﺪ‬ ‫ﺩﺍﺩﻩ‬ ‫ﺑﺴﻂ‬. ‫ﻭﺍﻗﻌـﯽ‬ ‫ﺩﻳﺰﻝ‬ ‫ﻣﻮﺗﻮﺭ‬ ‫ﺑﻪ‬ ‫ﻣﺮﺑﻮﻁ‬ ‫ﺍﻃﻼﻋﺎﺕ‬ ‫ﺍﺯ‬ ‫ﻣﻮﺗﻮﺭ‬ ‫ﻣﺪﻝ‬ ‫ﺍﻧﺪﺍﺯﻩ‬ ‫ﺷﺪ‬ ‫ﺩﺍﺩﻩ‬ ‫ﺍﻓﺰﺍﺭ‬ ‫ﻧﺮﻡ‬ ‫ﺑﻪ‬ ‫ﻭ‬ ‫ﺍﺳﺘﺨﺮﺍﺝ‬. ‫ﺍﺯ‬ ‫ﻣﺨﺘﻠﻒ‬ ‫ﻫﺎﯼ‬ ‫ﺳﺮﻋﺖ‬ ‫ﺩﺭ‬ ‫ﻣﻮﺗﻮﺭ‬ ‫ﻣﺪﻝ‬ ‫ﺳﺎﺯﯼ‬ ‫ﺷﺒﻴﻪ‬ ١٠٠٠ ‫ﺗـ‬ ‫ﺎ‬ rpm ٤٠٠٠ ‫ﺍﻧﺠـﺎﻡ‬ ‫ﺷﺪ‬. ‫ﻧ‬ ‫ﮔـ‬ ‫ﺟﺮﻳﺎﻥ‬ ‫ﻓﺸﺎﺭ‬ ‫ﻋﻤﻠﮑﺮﺩ‬ ‫ﺳﺎﺯﯼ‬ ‫ﺷﺒﻴﻪ‬ ‫ﺘﺎﻳﺞ‬ ‫ﻧﺘـﺎﻳﺞ‬ ‫ﭘـﺮﺩﺍﺯﺵ‬ ‫ﺍﺯ‬ ‫ﻭﺭﻭﺩﯼ‬ ‫ﻣﺎﻧﻴﻔﻠـﺪ‬ ‫ﺩﺭ‬ ‫ﺎﺯ‬ GT-Post ‫ﺗﻌﻴـﻴﻦ‬ ‫ﺑـﺮﺍﯼ‬ ‫ﺷﺪ‬ ‫ﺣﺎﺻﻞ‬ ‫ﻣﻮﺗﻮﺭ‬ ‫ﺳﺮﻋﺖ‬ ‫ﺣﺴﺐ‬ ‫ﺑﺮ‬ ‫ﻓﺸﺎﺭ‬ ‫ﻋﻤﻠﮑﺮﺩ‬ ‫ﻫﻤﭽﻨﻴﻦ‬ ‫ﻭ‬ ‫ﻟﻨﮓ‬ ‫ﻣﻴﻞ‬ ‫ﺯﺍﻭﻳﻪ‬ ‫ﺑﺮﺣﺴﺐ‬ ‫ﻓﺸﺎﺭ‬ ‫ﻋﻤﻠﮑﺮﺩ‬. ‫ﺷﺒﻴﻪ‬ ‫ﻧﺘﺎﻳﺞ‬ ‫ﺗﺮﺗﻴﺒﯽ‬ ‫ﺍﻧﮋﮐﺘﻮﺭ‬ ‫ﻣﻮﺗﻮﺭ‬ ‫ﻭﺭﻭﺩﯼ‬ ‫ﻣﺎﻧﻴﻔﻠﺪ‬ ‫ﺳﺎﺯﯼ‬ CNG ‫ﻭﺭﻭﺩﯼ‬ ‫ﻣﺎﻧﻴﻔﻠﺪ‬ ‫ﮔﺎﺯ‬ ‫ﺟﺮﻳﺎﻥ‬ ‫ﻓﺸﺎﺭ‬ ‫ﭘﺮﻭﻓﻴﻞ‬ ‫ﻋﻤﻠﮑﺮﺩ‬ ‫ﻫﺎﯼ‬ ‫ﻭﻳﮋﮔﯽ‬ ، ‫ﺗﻐﻴﻴﺮﺍ‬ ‫ﺩﺭ‬ ‫ﺭﺍ‬ ‫ﻣﯽ‬ ‫ﻧﺸﺎﻥ‬ ‫ﻣﻮﺗﻮﺭ‬ ‫ﺳﺮﻋﺖ‬ ‫ﺕ‬ ‫ﺩﻫﺪ‬. ‫ﻭ‬ ‫ﻭﺭﻭﺩﯼ‬ ‫ﻣﺎﻧﻴﻔﻠـﺪ‬ ‫ﮐـﻞ‬ ‫ﻓـﺸﺎﺭ‬ ‫ﻣﻴـﺎﻧﮕﻴﻦ‬ ‫ﻣﻘﺎﻳـﺴﻪ‬ ‫ﺑـﺎ‬ ‫ﻣﺪﻝ‬ ‫ﻋﺪﺩﯼ‬ ‫ﺩﻗﺖ‬ ‫ﺗﺮﺗﻴﺒﯽ‬ ‫ﺍﻧﮋﮐﺘﻮﺭ‬ ‫ﻣﻮﺗﻮﺭ‬ ‫ﺩﺭ‬ ‫ﻭﺭﻭﺩﯼ‬ ‫ﻣﺎﻧﻴﻔﻠﺪ‬ ‫ﻓﺸﺎﺭ‬ ‫ﺷﺪﻩ‬ ‫ﮔﻴﺮﯼ‬ ‫ﺍﻧﺪﺍﺯﻩ‬ ‫ﻣﻘﺎﺩﻳﺮ‬ CNG ‫ﻗﺮﺍﺭ‬ ‫ﺗﺎﻳﻴﺪ‬ ‫ﻣﻮﺭﺩ‬ ‫ﮔﺮﻓﺖ‬. ‫ﺷـﺒﻴﻪ‬ ‫ﻧﺘﺎﻳﺞ‬ ‫ﻧﺸﺎﻥ‬ ‫ﺳﺎﺯﯼ‬ ‫ﺩﺍﺩ‬ ‫ﺗﺮﺗﻴﺒﯽ‬ ‫ﺍﻧﮋﮐﺘﻮﺭ‬ ‫ﺍﯼ‬ ‫ﺟﺮﻗﻪ‬ ‫ﻣﻮﺗﻮﺭ‬ ‫ﺑﻪ‬ ‫ﺩﻳﺰﻝ‬ ‫ﻣﻮﺗﻮﺭ‬ ‫ﺗﺒﺪﻳﻞ‬ ‫ﮐﻪ‬ CNG ‫ﺳﻮ‬ ‫ﻓﺸﺎﺭ‬ ‫ﻋﻤﻠﮑﺮﺩ‬ ‫ﺍﻓﺰﺍﻳﺶ‬ ‫ﺑﺎﻋﺚ‬ ‫ﺯ‬ ‫ﻣﯽ‬ ‫ﻣﻮﺗﻮﺭ‬ ‫ﻭﺭﻭﺩﯼ‬ ‫ﻣﺎﻧﻴﻔﻠﺪ‬ ‫ﺩﺭ‬ ‫ﺷﻮﺩ‬ .

Research paper thumbnail of Study of Fuel Injection Pressure Effect on Performance and Fuel Consumption of Diesel Engine Based on Load and Engine Speed

International Journal of Applied Engineering Research, Volume 3, Number 2, pp. 229–24, 2008

Diesel engines fuel injection pressure is most important aspect. The diesel engine selected in th... more Diesel engines fuel injection pressure is most important aspect. The diesel engine selected in this study such as fuel direct injection is generated from the unit pump system. Effect of fuel injection pressure on engine performance is investigated and analyzed in the study. Experiments are performed on a four-cylinder two-stroke, direct injection diesel engine. The diesel engine power performance values such as indicated pressure, indicated horse power, shaft horse power, brake horse power, break mean effective pressure and fuel consumption investigated both of variation engine speeds-fixed load and fixed engine speed-variation loads by the fuel injection pressure variation. Based on the experiment results, the best performance of the pressure injection is obtained. The experiment results shown, that the increasing injection pressures have been given increased of engine power and fuel consumption of the diesel engine.

Research paper thumbnail of Heat Transfer Investigation of Intake Port Engine Based on Steady-State and Transient Simulation

American Journal of Applied Sciences 5 (11), 2008

This research is presents the gas flow heat transfer investigation in the intake port of four str... more This research is presents the gas flow heat transfer investigation in the intake port of four stroke direct injection compression ignition engine using GT-Suite software for steady-state and transient simulation. To investigate and simulate the intake port gas flow heat transfer profile of compression ignition engine is using GT-Power engine model were developed in this research. GT-Power is subsystem menu from GT-Suite. The engine model is developed from the real compression ignition engine data and input to software library. In this research, the simulation of engine model is running in variations engine speeds. The simulation output data is collected from the GT-Post results plots and casesRLT in post processing. The simulation results of the intake port engine model are shown the characters in intake port heat transfer profile of engine in variations engine speeds. The detail performance intake port gas flow heat transfer is shown that in 3500 rpm engine speed is the best

Research paper thumbnail of Investigation of Diesel Engine Performance Based on Simulation

American Journal of Applied Sciences 5 (6), 2008

The single cylinder modeling and simulation for four-stroke direct-injection diesel engine requir... more The single cylinder modeling and simulation for four-stroke direct-injection diesel engine requires the use of advanced analysis and development tools to carry out of performance the diesel engine model. The simulation and computational development of modeling for the research use the commercial of GT-SUITE 6.2 software. In this research, the one dimensional modeling of single cylinder for four-stroke direct-injection diesel engine developed. The analysis of the model is combustion performance process in the engine cylinder. The model simulation covers the full engine cycle consisting of intake, compression, power and exhaust. In this model it can to know the diesel engine performance effect with simulation and modeling in any speeds (rpm) parameters. The performance trend of the diesel engine model developed result of this model based on the theoretical and computational model shows in graphics in the paper.

Research paper thumbnail of Comparative Performance of Direct Injection Diesel Engines Fueled Using Compressed Natural Gas and Diesel Fuel Based on GT-POWER Simulation

American Journal of Applied Sciences 5(5), 2008

The paper is investigated the application of compressed natural gas (CNG) as an alternative fuel ... more The paper is investigated the application of compressed natural gas (CNG) as an alternative fuel and its performance effect in the diesel engines using GT-POWER computational simulation. The CNG as an alternative fuel for four stroke diesel engine modeling was developed from the real diesel engine using GT-POWER computational model with measure all of engine components size. The computational model will be running on mono CNG fuel and mono diesel fuel to simulate and investigate the engine performance effect on the difference fuel. Output of the model simulation shown the effect of diesel engine fueled by CNG performance effect were simulated in any engine speeds parameters.

Research paper thumbnail of Computational Visualization and Simulation of Diesel Engines Valve Lift Performance Using CFD

American Journal of Applied Sciences 5(5), 2008

The paper visualized and simulated the intake and exhaust valve lift in the single-cylinder four-... more The paper visualized and simulated the intake and exhaust valve lift in the single-cylinder four-stroke direct injection diesel engine. The visualization and simulation computational development were using the commercial Computational Fluid Dynamics of STAR-CD 3.15A software and GT-SUITE 6.2 software. The one dimensional of valve lift modeling was developed using GT-POWER software and the visualization the model using STAR-CD. The model simulation covers the full engine cycle consisting of intake, compression, power and exhaust. The visualization and simulation shown the diesel engine intake and exhaust valve lifting and moving based on the crank angle degree parameters. The result of this visualization and simulation shows the intake and exhaust valve lift moving and air fluid flow of the diesel engine model.

Research paper thumbnail of Fuel Injection Pressure Effect on Performance of Direct Injection Diesel Engines Based on Experiment

American Journal of Applied Sciences 5(3), 2008

Fuel injection pressures in diesel engine plays an important role for engine performance obtainin... more Fuel injection pressures in diesel engine plays an important role for engine performance obtaining treatment of combustion. The present diesel engines such as fuel direct injection, the pressures can be increased about 100-200 Mpa bar in fuel pump injection system. The experimental investigated effects of fuel injection pressure on engine performance. Experiments have been performed on a diesel engine with four-cylinder, two-stroke, direct injection. Engine performance values such as indicated pressure, indicated horse power, shaft horse power, brake horse power, break mean effective pressure and fuel consumption have been investigated both of variation engine speeds-fixed load and fixed engine speed-variation loads by changing the fuel injection pressure from 180 to 220 bar. According to the results, the best performance of the pressure injection has been obtained at 220 bar, specific fuel consumption has been obtained at 200 bar for fixed load-variation speeds and at 180 bar for variation loads-fixed speed. The results of the experiment have given as graphics in this paper.

Research paper thumbnail of Computational Simulation of Fuel Nozzle Multi Holes Geometries Effect on Direct Injection Diesel Engine Performance Using GT-POWER

American Journal of Applied Sciences 5(2), 2008

The computational model simulation development is use the commercial computational fluid dynamics... more The computational model simulation development is use the commercial computational fluid dynamics of GT-POWER 6.2 software were specially development for internal combustion engines performance simulation. The research concentrated on one dimensional model and focuses on fuel nozzles multi holes geometries variation developed from all of the engine components size measurement of the original selected diesel engine. All of the measurements data input to the window engines component menu for running input data in the model. Results of the diesel engine fuel nozzles multi holes geometries model simulation running is in GT-POST. The model performance shows in engine cylinder and engine crank-train on software window output. The performance analysis effect of the model investigated of fuel in-cylinder engine, indicated specific fuel consumption, indicated torque and indicated power of engine modeled. The simulation result was shows that the seven holes nozzle provided the best burning for fuel in-cylinder burned and the five holes nozzle provided the best for indicted power, indicated torque and indicated specific fuel consumption in any different engine speed in simulation.

Research paper thumbnail of Steady-State and Transient Simulation of Gas Flow Pressure in Intake Port Engine

Research paper thumbnail of In - Cylinder Mass Flow Rate and Gas Species Concentration Simulation of Spark Ignition Engine

Journal of Engineering and Applied Sciences 2 (12), 2007

Research paper thumbnail of Engine Power Calculation Using Air Flow Through Engine from Flowbench Test Flow of Four Stroke Direct Injection Diesel Engines

Research paper thumbnail of Valve Flow Discharge Coefficient Investigation for Intake and Exhaust Port of Four Stroke Diesel

Journal of Engineering and Applied Sciences 2 (12): 1807-1811, 2007

The study presents the effect of the coefficient of discharge of intake and exhaust valve for dir... more The study presents the effect of the coefficient of discharge of intake and exhaust valve for direct injection diesel engine. The main purpose of the present research is to determine the discharge coefficient of
intake and exhaust valves in the engine cylinder head of a 406 cm . The experiment using a flow bench model Superflow SF-1020. It is required to know such discharge coefficients, as a function of lift
and pressure ratio in the mathematical modelling process at each juncture during the open cycle. The obtained
results are dependent on test pressure.

Research paper thumbnail of Valve Flow Discharge Coefficient Investigation for Intake and Exhaust Port of Four Stroke Diesel Engines

Research paper thumbnail of Valve Flow Discharge Coefficient Investigation for Intake and Exhaust Port of Four Stroke Diesel Engines

Journal of Engineering and Applied Sciences 2 (12): 1807-1811, 2007

The study presents the effect of the coefficient of discharge of intake and exhaust valve for dir... more The study presents the effect of the coefficient of discharge of intake and exhaust valve for direct injection diesel engine. The main purpose of the present research is to determine the discharge coefficient of intake and exhaust valves in the engine cylinder head of a 406 cm. The experiment has been conducted using 3 a flow bench model Superflow SF-1020. It is required to know such discharge coefficients, as a function of lift and pressure ratio in the mathematical modelling process at each juncture during the open cycle. The obtained results are dependent on test pressure.

Research paper thumbnail of Nozzle Holes Effect on Unburned Fuel in Injected and In-Cylinder Fuel of Four Stroke Direct Injection Diesel Engine

Research Journal of Applied Sciences 2 (11): 1165-1169, 2007

The fuel nozzle is an important aspect for diesel engine combustion performance. The model of fou... more The fuel nozzle is an important aspect for diesel engine combustion performance. The model of four-stroke direct-injection diesel engines is developed in the research to investigate the injected and in-cylinder fuel diesel engine in unburned fuel effect from the fuel nozzle multi holes geometries. Model and simulation in this research is using GT-POWER from the GTise-6.2 software were specially development for internal combustion engines performance simulation. The selected diesel engine is opened, breakdown and measurement of all its components size to input to the window engines component menu of the model. The investigation results output of the simulation is focuses on nozzle holes effect in unburned fuel in injected and in-cylinder fuel process of diesel engine. The holes nozzles from 1 hole until 10 holes in difference orifice diameter have been examined using GT-POWER model simulation and the results shown that the 5 holes nozzle provided the best burning fuel results in any variation engine speeds.

Research paper thumbnail of Air Flow Analysis of Four Stroke Direct Injection Diesel Engines Based on Air Pressure Input and L/D Ratio

Research Journal of Applied Sciences 2 (11): 1135-1142, 2007

The air flow through engines is equally important to have accurate values for coefficients of dis... more The air flow through engines is equally important to have accurate values for coefficients of discharge through the combinations of valves, ports and ducts of engines. In this air flow analysis is investigated of air flow is desirable for intake flow through the exhaust flow port using SuperFlow Flowbench. The air flow of the diesel engines can be quite measured under steady flow conditions for a range of pressures and valve Lift per Diameter (L/D). This syudy presents experimental results for air flow investigating in the intake and exhaust flow port of four stroke direct injection diesel engines. The airflow measurements and calculation are shown for various pressures, valve Lift per Diameters (L/D) ratio conditions at the intake port pipe to cylinder and cylinder to exhaust port pipe geometries. The result shown that, the increasing pressure input in port flow on fixed valve L/D can increase the air flow through engine cylinder.

Research paper thumbnail of Steady-State and Transient Simulation of Gas Flow Temperature of Intake Port Engine

Journal of Applied Sciences Research, 4(7): 767-777, 2008

The objective of this paper is to investigate the gas flow temperature in the intake port of four... more The objective of this paper is to investigate the gas flow temperature in the intake port of four-stroke direct-injection compression ignition engine using GT-Suite software for steady-state and transient simulation. To investigate and simulate the intake port gas flow temperature profile of compression ignition engine is using GT-Power engine model were developed in this paper. GT-Power is subsystem menu from GT-Suite. The engine model is developed from the real compression ignition engine data and input to software library. In this research, the simulation of engine model is running in variations engine speeds. The simulation output data is collected from the GT-Post results plots and casesRLT in post processing. The simulation results of the intake port engine model are shown the characters in intake port temperature profile of engine in variations engine speeds. The detail performance intake port gas flow temperature is shown in graphs in this paper.

Research paper thumbnail of Study of Correlating a Compression Ignition Engine Model to Plotted Characterization of In-Cylinder Pressure and Temperature Profile

Journal of Applied Sciences Research, 4(6): 658-668, 2008

In-cylinder pressure profile and in-cylinder temperature profile of compression ignition engine i... more In-cylinder pressure profile and in-cylinder temperature profile of compression ignition engine is investigated using computational engine model simulation in this paper. The engine model is developed from the real compression ignition engine data. The software have used in the compression ignition engine model development is GT-POWER, the part of GT-ISE software. In this research, the simulation of engine model is running in variations engine speeds. The engine model output is designed focuses on investigation the correlation of characteristic in-cylinder pressure profile and in-cylinder temperature profile based on variations engine speeds. The simulation output data is collected from the GT-Post results plots in post processing. The results of the engine model simulation are shown the characters in-cylinder engine pressure profile and in-cylinder engine temperature profile of engine in variations engine speeds running. The best performance in-cylinder profile is shown in 3000 rpm engine speed.

Research paper thumbnail of In-Cylinder Flow through Piston-Port Engines Modeling using Dynamic Mesh

Journal of Applied Sciences Research, 4(1): 58-64, 2008

This paper presents numerical study of three-dimensional analysis of two-stroke spark-ignition (S... more This paper presents numerical study of three-dimensional analysis of two-stroke spark-ignition (SI) cross loop-scavenged port. The objective of this study is to investigate the in-cylinder characteristics at motored transient condition. The pressure on in-cylinder and intake port were collected and applied for validation with numerical results for 1400 rpm. The three-dimensional modeling analysis was performed utilizing dynamic mesh method. The prediction of distribution of in-cylinder pressure and mass fraction of gases function of crank angle were discussed. The results shown that the relative error between experimental and numerical less that 2 %.

Research paper thumbnail of Analysis of Engine Speed Effect on Temperature and Pressure of Engine Based on Experiment and Computational Simulation

Journal of Applied Sciences Research, 4(1): 76-83, 2008

This paper is want to explore the in-cylinder pressures and temperature for a single cylinder two... more This paper is want to explore the in-cylinder pressures and temperature for a single cylinder two-stroke spark ignition (SI) engine simulation and validated using cylinder pressure and temperature experiment data. One dimensional analysis is used GT-POWER 6.2 software for computational simulation. These values defined with pressure average and used on simulation analysis. Also include the prediction of effects on the in cylinder pressure and temperature. The research results were validating between measured and calculated shown in graphs in this paper.

Research paper thumbnail of TECHNICAL NOTE EFFECT OF DIRECT INJECTION DIESEL ENGINE CONVERT TO SEQUENTIAL INJECTION CNG ENGINE IN INTAKE PORT GAS FLOW PRESSURE PROFILE

International Journal of Engineering, Transactions B: Application, 2008

The one dimension computational model of a sequential injection engine, which runs on compressed ... more The one dimension computational model of a sequential injection engine, which runs on compressed natural gas (CNG) with spark ignition, is developed for this study, to simulate the performance of gas flow pressure profile, under various speed conditions. The computational model is used to simulate and study of the steady state and transient processes of the intake manifold. The sequential injection CNG engine model is developed using GT-Power software. The size of this model engine is developed from the real diesel engine data and was input into the software's' library. The simulation model engine runs with various speeds from 1000 up to 4000 rpm. The simulation results of the performance with gas flow pressure, in the intake manifold are collected from two data sets; the GT-Post post processing plots for pressure performance versus crank angle, and post processing cases RLT for pressure performance versus engine speed. The simulation results of the intake manifold and the performance of the gas flow pressure profile, with various engine speed, for the CNG sequential injection engine are shown by characters. The Pressure profile of the engine and the numerical accuracy of the model is verified and validated by comparing the average total of the intake manifold pressure, with the measured intake manifold pressure, of a CNG sequential injection engine. The simulation results show that, the conversion of diesel engine to a CNG sequential injection engine with spark ignition will increase the pressure performance in the intake manifold of the engine. ‫ﭼﮑﻴﺪﻩ‬ ‫ﺷـﺪﻩ‬ ‫ﻓـﺸﺮﺩﻩ‬ ‫ﻃﺒﻴﻌﯽ‬ ‫ﮔﺎﺯ‬ ‫ﺗﺮﺗﻴﺒﯽ‬ ‫ﺍﻧﮋﮐﺘﻮﺭ‬ ‫ﺍﯼ‬ ‫ﺟﺮﻗﻪ‬ ‫ﻣﻮﺗﻮﺭ‬ ‫ﺑﻌﺪﯼ‬ ‫ﻳﮏ‬ ‫ﺭﻳﺎﺿﯽ‬ ‫ﻣﺪﻝ‬ (CNG) ‫ﺷـﺒﻴﻪ‬ ‫ﺑـﺮﺍﯼ‬ ‫ﺷﺪ‬ ‫ﺩﺍﺩﻩ‬ ‫ﺑﺴﻂ‬ ‫ﺗﺤﻘﻴﻖ‬ ‫ﺍﻳﻦ‬ ‫ﺩﺭ‬ ‫ﻣﻮﺗﻮﺭ‬ ‫ﺳﺮﻋﺖ‬ ‫ﻣﺨﺘﻠﻒ‬ ‫ﺷﺮﺍﻳﻂ‬ ‫ﺩﺭ‬ ‫ﮔﺎﺯ‬ ‫ﺟﺮﻳﺎﻥ‬ ‫ﻓﺸﺎﺭ‬ ‫ﭘﺮﻭﻓﻴﻞ‬ ‫ﺳﺎﺯﯼ‬. ‫ﺭﻳﺎﺿـﯽ‬ ‫ﻣـﺪﻝ‬ ‫ﺩﺭ‬ ‫ﻣﯽ‬ ‫ﮔﺮﻓﺘﻪ‬ ‫ﻧﻈﺮ‬ ‫ﺩﺭ‬ ‫ﻭﺭﻭﺩﯼ‬ ‫ﻣﺎﻧﻴﻔﻠﺪ‬ ‫ﮔﺬﺭﺍﯼ‬ ‫ﺳﺎﺯﯼ‬ ‫ﺷﺒﻴﻪ‬ ‫ﭘﺮﻭﺳﻪ‬ ‫ﻭ‬ ‫ﻳﮑﻨﻮﺍﺧﺖ‬ ‫ﺣﺎﻟﺖ‬ ‫ﺷﻮﺩ‬. ‫ﻣ‬ ‫ﺗﺮﺗﻴﺒـﯽ‬ ‫ﺍﻧﮋﮐﺘﻮﺭ‬ ‫ﻣﻮﺗﻮﺭ‬ ‫ﺪﻝ‬ CNG ‫ﺍﻓﺰﺍﺭ‬ ‫ﻧﺮﻡ‬ ‫ﮐﻤﮏ‬ ‫ﺑﻪ‬ GT-Power ‫ﺷﺪ‬ ‫ﺩﺍﺩﻩ‬ ‫ﺑﺴﻂ‬. ‫ﻭﺍﻗﻌـﯽ‬ ‫ﺩﻳﺰﻝ‬ ‫ﻣﻮﺗﻮﺭ‬ ‫ﺑﻪ‬ ‫ﻣﺮﺑﻮﻁ‬ ‫ﺍﻃﻼﻋﺎﺕ‬ ‫ﺍﺯ‬ ‫ﻣﻮﺗﻮﺭ‬ ‫ﻣﺪﻝ‬ ‫ﺍﻧﺪﺍﺯﻩ‬ ‫ﺷﺪ‬ ‫ﺩﺍﺩﻩ‬ ‫ﺍﻓﺰﺍﺭ‬ ‫ﻧﺮﻡ‬ ‫ﺑﻪ‬ ‫ﻭ‬ ‫ﺍﺳﺘﺨﺮﺍﺝ‬. ‫ﺍﺯ‬ ‫ﻣﺨﺘﻠﻒ‬ ‫ﻫﺎﯼ‬ ‫ﺳﺮﻋﺖ‬ ‫ﺩﺭ‬ ‫ﻣﻮﺗﻮﺭ‬ ‫ﻣﺪﻝ‬ ‫ﺳﺎﺯﯼ‬ ‫ﺷﺒﻴﻪ‬ ١٠٠٠ ‫ﺗـ‬ ‫ﺎ‬ rpm ٤٠٠٠ ‫ﺍﻧﺠـﺎﻡ‬ ‫ﺷﺪ‬. ‫ﻧ‬ ‫ﮔـ‬ ‫ﺟﺮﻳﺎﻥ‬ ‫ﻓﺸﺎﺭ‬ ‫ﻋﻤﻠﮑﺮﺩ‬ ‫ﺳﺎﺯﯼ‬ ‫ﺷﺒﻴﻪ‬ ‫ﺘﺎﻳﺞ‬ ‫ﻧﺘـﺎﻳﺞ‬ ‫ﭘـﺮﺩﺍﺯﺵ‬ ‫ﺍﺯ‬ ‫ﻭﺭﻭﺩﯼ‬ ‫ﻣﺎﻧﻴﻔﻠـﺪ‬ ‫ﺩﺭ‬ ‫ﺎﺯ‬ GT-Post ‫ﺗﻌﻴـﻴﻦ‬ ‫ﺑـﺮﺍﯼ‬ ‫ﺷﺪ‬ ‫ﺣﺎﺻﻞ‬ ‫ﻣﻮﺗﻮﺭ‬ ‫ﺳﺮﻋﺖ‬ ‫ﺣﺴﺐ‬ ‫ﺑﺮ‬ ‫ﻓﺸﺎﺭ‬ ‫ﻋﻤﻠﮑﺮﺩ‬ ‫ﻫﻤﭽﻨﻴﻦ‬ ‫ﻭ‬ ‫ﻟﻨﮓ‬ ‫ﻣﻴﻞ‬ ‫ﺯﺍﻭﻳﻪ‬ ‫ﺑﺮﺣﺴﺐ‬ ‫ﻓﺸﺎﺭ‬ ‫ﻋﻤﻠﮑﺮﺩ‬. ‫ﺷﺒﻴﻪ‬ ‫ﻧﺘﺎﻳﺞ‬ ‫ﺗﺮﺗﻴﺒﯽ‬ ‫ﺍﻧﮋﮐﺘﻮﺭ‬ ‫ﻣﻮﺗﻮﺭ‬ ‫ﻭﺭﻭﺩﯼ‬ ‫ﻣﺎﻧﻴﻔﻠﺪ‬ ‫ﺳﺎﺯﯼ‬ CNG ‫ﻭﺭﻭﺩﯼ‬ ‫ﻣﺎﻧﻴﻔﻠﺪ‬ ‫ﮔﺎﺯ‬ ‫ﺟﺮﻳﺎﻥ‬ ‫ﻓﺸﺎﺭ‬ ‫ﭘﺮﻭﻓﻴﻞ‬ ‫ﻋﻤﻠﮑﺮﺩ‬ ‫ﻫﺎﯼ‬ ‫ﻭﻳﮋﮔﯽ‬ ، ‫ﺗﻐﻴﻴﺮﺍ‬ ‫ﺩﺭ‬ ‫ﺭﺍ‬ ‫ﻣﯽ‬ ‫ﻧﺸﺎﻥ‬ ‫ﻣﻮﺗﻮﺭ‬ ‫ﺳﺮﻋﺖ‬ ‫ﺕ‬ ‫ﺩﻫﺪ‬. ‫ﻭ‬ ‫ﻭﺭﻭﺩﯼ‬ ‫ﻣﺎﻧﻴﻔﻠـﺪ‬ ‫ﮐـﻞ‬ ‫ﻓـﺸﺎﺭ‬ ‫ﻣﻴـﺎﻧﮕﻴﻦ‬ ‫ﻣﻘﺎﻳـﺴﻪ‬ ‫ﺑـﺎ‬ ‫ﻣﺪﻝ‬ ‫ﻋﺪﺩﯼ‬ ‫ﺩﻗﺖ‬ ‫ﺗﺮﺗﻴﺒﯽ‬ ‫ﺍﻧﮋﮐﺘﻮﺭ‬ ‫ﻣﻮﺗﻮﺭ‬ ‫ﺩﺭ‬ ‫ﻭﺭﻭﺩﯼ‬ ‫ﻣﺎﻧﻴﻔﻠﺪ‬ ‫ﻓﺸﺎﺭ‬ ‫ﺷﺪﻩ‬ ‫ﮔﻴﺮﯼ‬ ‫ﺍﻧﺪﺍﺯﻩ‬ ‫ﻣﻘﺎﺩﻳﺮ‬ CNG ‫ﻗﺮﺍﺭ‬ ‫ﺗﺎﻳﻴﺪ‬ ‫ﻣﻮﺭﺩ‬ ‫ﮔﺮﻓﺖ‬. ‫ﺷـﺒﻴﻪ‬ ‫ﻧﺘﺎﻳﺞ‬ ‫ﻧﺸﺎﻥ‬ ‫ﺳﺎﺯﯼ‬ ‫ﺩﺍﺩ‬ ‫ﺗﺮﺗﻴﺒﯽ‬ ‫ﺍﻧﮋﮐﺘﻮﺭ‬ ‫ﺍﯼ‬ ‫ﺟﺮﻗﻪ‬ ‫ﻣﻮﺗﻮﺭ‬ ‫ﺑﻪ‬ ‫ﺩﻳﺰﻝ‬ ‫ﻣﻮﺗﻮﺭ‬ ‫ﺗﺒﺪﻳﻞ‬ ‫ﮐﻪ‬ CNG ‫ﺳﻮ‬ ‫ﻓﺸﺎﺭ‬ ‫ﻋﻤﻠﮑﺮﺩ‬ ‫ﺍﻓﺰﺍﻳﺶ‬ ‫ﺑﺎﻋﺚ‬ ‫ﺯ‬ ‫ﻣﯽ‬ ‫ﻣﻮﺗﻮﺭ‬ ‫ﻭﺭﻭﺩﯼ‬ ‫ﻣﺎﻧﻴﻔﻠﺪ‬ ‫ﺩﺭ‬ ‫ﺷﻮﺩ‬ .

Research paper thumbnail of Study of Fuel Injection Pressure Effect on Performance and Fuel Consumption of Diesel Engine Based on Load and Engine Speed

International Journal of Applied Engineering Research, Volume 3, Number 2, pp. 229–24, 2008

Diesel engines fuel injection pressure is most important aspect. The diesel engine selected in th... more Diesel engines fuel injection pressure is most important aspect. The diesel engine selected in this study such as fuel direct injection is generated from the unit pump system. Effect of fuel injection pressure on engine performance is investigated and analyzed in the study. Experiments are performed on a four-cylinder two-stroke, direct injection diesel engine. The diesel engine power performance values such as indicated pressure, indicated horse power, shaft horse power, brake horse power, break mean effective pressure and fuel consumption investigated both of variation engine speeds-fixed load and fixed engine speed-variation loads by the fuel injection pressure variation. Based on the experiment results, the best performance of the pressure injection is obtained. The experiment results shown, that the increasing injection pressures have been given increased of engine power and fuel consumption of the diesel engine.

Research paper thumbnail of Heat Transfer Investigation of Intake Port Engine Based on Steady-State and Transient Simulation

American Journal of Applied Sciences 5 (11), 2008

This research is presents the gas flow heat transfer investigation in the intake port of four str... more This research is presents the gas flow heat transfer investigation in the intake port of four stroke direct injection compression ignition engine using GT-Suite software for steady-state and transient simulation. To investigate and simulate the intake port gas flow heat transfer profile of compression ignition engine is using GT-Power engine model were developed in this research. GT-Power is subsystem menu from GT-Suite. The engine model is developed from the real compression ignition engine data and input to software library. In this research, the simulation of engine model is running in variations engine speeds. The simulation output data is collected from the GT-Post results plots and casesRLT in post processing. The simulation results of the intake port engine model are shown the characters in intake port heat transfer profile of engine in variations engine speeds. The detail performance intake port gas flow heat transfer is shown that in 3500 rpm engine speed is the best

Research paper thumbnail of Investigation of Diesel Engine Performance Based on Simulation

American Journal of Applied Sciences 5 (6), 2008

The single cylinder modeling and simulation for four-stroke direct-injection diesel engine requir... more The single cylinder modeling and simulation for four-stroke direct-injection diesel engine requires the use of advanced analysis and development tools to carry out of performance the diesel engine model. The simulation and computational development of modeling for the research use the commercial of GT-SUITE 6.2 software. In this research, the one dimensional modeling of single cylinder for four-stroke direct-injection diesel engine developed. The analysis of the model is combustion performance process in the engine cylinder. The model simulation covers the full engine cycle consisting of intake, compression, power and exhaust. In this model it can to know the diesel engine performance effect with simulation and modeling in any speeds (rpm) parameters. The performance trend of the diesel engine model developed result of this model based on the theoretical and computational model shows in graphics in the paper.

Research paper thumbnail of Comparative Performance of Direct Injection Diesel Engines Fueled Using Compressed Natural Gas and Diesel Fuel Based on GT-POWER Simulation

American Journal of Applied Sciences 5(5), 2008

The paper is investigated the application of compressed natural gas (CNG) as an alternative fuel ... more The paper is investigated the application of compressed natural gas (CNG) as an alternative fuel and its performance effect in the diesel engines using GT-POWER computational simulation. The CNG as an alternative fuel for four stroke diesel engine modeling was developed from the real diesel engine using GT-POWER computational model with measure all of engine components size. The computational model will be running on mono CNG fuel and mono diesel fuel to simulate and investigate the engine performance effect on the difference fuel. Output of the model simulation shown the effect of diesel engine fueled by CNG performance effect were simulated in any engine speeds parameters.

Research paper thumbnail of Computational Visualization and Simulation of Diesel Engines Valve Lift Performance Using CFD

American Journal of Applied Sciences 5(5), 2008

The paper visualized and simulated the intake and exhaust valve lift in the single-cylinder four-... more The paper visualized and simulated the intake and exhaust valve lift in the single-cylinder four-stroke direct injection diesel engine. The visualization and simulation computational development were using the commercial Computational Fluid Dynamics of STAR-CD 3.15A software and GT-SUITE 6.2 software. The one dimensional of valve lift modeling was developed using GT-POWER software and the visualization the model using STAR-CD. The model simulation covers the full engine cycle consisting of intake, compression, power and exhaust. The visualization and simulation shown the diesel engine intake and exhaust valve lifting and moving based on the crank angle degree parameters. The result of this visualization and simulation shows the intake and exhaust valve lift moving and air fluid flow of the diesel engine model.

Research paper thumbnail of Fuel Injection Pressure Effect on Performance of Direct Injection Diesel Engines Based on Experiment

American Journal of Applied Sciences 5(3), 2008

Fuel injection pressures in diesel engine plays an important role for engine performance obtainin... more Fuel injection pressures in diesel engine plays an important role for engine performance obtaining treatment of combustion. The present diesel engines such as fuel direct injection, the pressures can be increased about 100-200 Mpa bar in fuel pump injection system. The experimental investigated effects of fuel injection pressure on engine performance. Experiments have been performed on a diesel engine with four-cylinder, two-stroke, direct injection. Engine performance values such as indicated pressure, indicated horse power, shaft horse power, brake horse power, break mean effective pressure and fuel consumption have been investigated both of variation engine speeds-fixed load and fixed engine speed-variation loads by changing the fuel injection pressure from 180 to 220 bar. According to the results, the best performance of the pressure injection has been obtained at 220 bar, specific fuel consumption has been obtained at 200 bar for fixed load-variation speeds and at 180 bar for variation loads-fixed speed. The results of the experiment have given as graphics in this paper.

Research paper thumbnail of Computational Simulation of Fuel Nozzle Multi Holes Geometries Effect on Direct Injection Diesel Engine Performance Using GT-POWER

American Journal of Applied Sciences 5(2), 2008

The computational model simulation development is use the commercial computational fluid dynamics... more The computational model simulation development is use the commercial computational fluid dynamics of GT-POWER 6.2 software were specially development for internal combustion engines performance simulation. The research concentrated on one dimensional model and focuses on fuel nozzles multi holes geometries variation developed from all of the engine components size measurement of the original selected diesel engine. All of the measurements data input to the window engines component menu for running input data in the model. Results of the diesel engine fuel nozzles multi holes geometries model simulation running is in GT-POST. The model performance shows in engine cylinder and engine crank-train on software window output. The performance analysis effect of the model investigated of fuel in-cylinder engine, indicated specific fuel consumption, indicated torque and indicated power of engine modeled. The simulation result was shows that the seven holes nozzle provided the best burning for fuel in-cylinder burned and the five holes nozzle provided the best for indicted power, indicated torque and indicated specific fuel consumption in any different engine speed in simulation.