2008 (18) 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
© 2008, INSInet Publication

N.M.I.N. Ibrahim, Semin, Rosli A. Bakar, Abdul R. Ismail and Ismail Ali

Abstract: 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.

Key words: Computational simulation, in-cylinder pressure and temperature, simulation

2008 (19). 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
© 2008, INSInet Publication

Analysis of Engine Speed Effect on Temperature and Pressure of Engine Based
on Experiment and Computational Simulation
N.M.I.N. Ibrahim, Semin, Rosli A. Bakar, Abdul R. Ismail and Ismail Ali

Abstract: 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.

Key words: Computational simulation, in-cylinder pressure and temperature, simulation

2008 (20). In-Cylinder Flow through Piston-Port Engines Modeling using Dynamic Mesh

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

In-Cylinder Flow through Piston-Port Engines Modeling using Dynamic Mesh
Semin, N.M.I.N. Ibrahim, Rosli A. Bakar and Abdul R. Ismail

Abstract: 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 %.

Keywords: Computational fluid dynamics, in-cylinder flow, modeling, two stroke engines

2008 (21). Steady-State and Transient Simulation of Gas Flow Pressure in Intake Port Engine

Journal of Engineering and Applied Sciences
Year: 2008 | Volume: 3 | Issue: 1 | Page No.: 47-54
DOI: 10.3923/jeasci.2008.47.54
Steady-State and Transient Simulation of Gas Flow Pressure in Intake Port Engine
Semin , Abdul Rahim Ismail and Rosli Abu Bakar
Abstract: This study presents the gas flow pressure 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 pressure profile of compression ignition engine is using GT-Power engine model were developed in this study. GT-Power is sub-system 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 cases RLT in post processing. The simulation results of the intake port engine model are shown the characters in intake port pressure profile of engine in variations engine speeds. The detail performance intake port gas flow pressure is shown in graphs in this study.

2007 (1). Engine Power Calculation Using Air Flow Through Engine from Flowbench Test Flow of Four Stroke Direct Injection Diesel Engines

Journal of Engineering and Applied Sciences
Year: 2007 | Volume: 2 | Issue: 12 | Page No.: 1812-1817
DOI: 10.3923/jeasci.2007.1812.1817
Engine Power Calculation Using Air Flow Through Engine from Flowbench Test Flow of Four Stroke Direct Injection Diesel Engines
Semin , R.A. Bakar and A.R. Ismail
Abstract: The objective of this study, is to present the experimental results for diesel engine power calculation based on air flow through engine from test flow of engine cylinder head using Superflow Flowbench SF-1020. In the SuperFlow Flowbench for four-cycle engine testing, air is drawn in through the cylinder head into the machine, through the air pump and exits through the vents at each side of the flow bench. A flow test in SuperFlow Flowbench consists of blowing or sucking air through a cylinder head or other component at a constant test pressure then the flow rate is measured at various valve lift. In this experiment, test pressure is setting at 1651, 1397, 1143, 889 and 635 of mm H2O, then the valve lifts in setting at 0.05, 0.1, 0.15, 0.2 and 0.25 of L/D ratio in every test pressures. The experiment and the calculations results are shown in table and figure in this study. The result shown that increasing of the valve lift and test pressure are positive correlation to increase the air flow through engine, engine power and engine speed.

2007 (2). Valve Flow Discharge Coefficient Investigation for Intake and Exhaust Port of Four Stroke Diesel Engines

Journal of Engineering and Applied Sciences
Year: 2007 | Volume: 2 | Issue: 12 | Page No.: 1807-1811
DOI: 10.3923/jeasci.2007.1807.1811
Valve Flow Discharge Coefficient Investigation for Intake and Exhaust Port of Four Stroke Diesel Engines
Abdul Rahim Ismail , Semin and Rosli Abu Bakar
Abstract: 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 cm3. The experiment has been conducted 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.

2007 (3). In-Cylinder Mass Flow Rate and Gas Species Concentration Simulation of Spark Ignition Engine

Journal of Engineering and Applied Sciences
Year: 2007 | Volume: 2 | Issue: 12 | Page No.: 1795-1806
DOI: 10.3923/jeasci.2007.1795.1806
In-Cylinder Mass Flow Rate and Gas Species Concentration Simulation of Spark Ignition Engine
N.M.I.N. Ibrahim , Semin , Rosli Abu Bakar , Abdul Rahim Ismail and Ismail Ali
Abstract: The objective of this research, is to simulate the in-cylinder mass flow rate for a single cylinder two-stroke spark ignition internal combustion engine. The research describes the Computational Fluid Dynamic (CFD) analysis technique to predict in-cylinder flow on scavenging process. The modeling of three-dimensional solid of scavenging model was developed using Solidwork computer aided design software. The three-dimensional model is imported to the GAMBIT to generate meshes grids and imported to FLUENT software for modeling analysis. This analysis is using the dynamic mesh approaches using unstructured tetrahedral and layered hexahedral elements simulated from Top Dead Center (TDC) at 0 of crank angle. Parameter of pressure is used as boundary condition collected from the experimental results at the intake port. The engine modeling simulates on motored condition for un-firing cases at difference of engine speed. The results shown that, using the dynamic mesh approaches give confident results compared with experimental. The results have been predicted of mass flow rate and mass fraction of burned gases on engine cylinder. Contour plotted of mass fraction burned gases and vector of velocity was plotted.

2007 (4). Nozzle Holes Effect on Unburned Fuel in Injected and In-Cylinder Fuel of Four Stroke Direct Injection Diesel Engine

Research Journal of Applied Sciences
Year: 2007 | Volume: 2 | Issue: 11 | Page No.: 1165-1169
DOI: 10.3923/rjasci.2007.1165.1169
Nozzle Holes Effect on Unburned Fuel in Injected and In-Cylinder Fuel of Four Stroke Direct Injection Diesel Engine
Semin and Rosli Abu Bakar
Abstract: 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.

2007 (5). Air Flow Analysis of Four Stroke Direct Injection Diesel Engines Based on Air Pressure Input and L/D Ratio

Research Journal of Applied Sciences
Year: 2007 | Volume: 2 | Issue: 11 | Page No.: 1135-1142
DOI: 10.3923/rjasci.2007.1135.1142
Air Flow Analysis of Four Stroke Direct Injection Diesel Engines Based on Air Pressure Input and L/D Ratio
Semin , Rosli Abu Bakar and Abdul Rahim Ismail

Abstract: The air flow through engines is equally important to have accurate values for coefficients of discharge through the combination 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 study 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.

LIST OF PUBLICATION IN CONFERENCES:

YEAR 2009:
1. Rosli Abu Bakar and Semin, 2009. Numerical Investigation of In-Cylinder Pressure Characteristic of Port Injection Compressed Natural Gas Engine Model, Proceeding of 6th Numerical Analysis Engineering (NAE2009) International Conference, Lombok, Indonesia, May 15th – 16th, 2009.

YEAR 2008:
1. Semin, Awang Idris, Rosli Abu Bakar, Ahmad Syahrizan Sulaiman and Ismail Ali, 2008. The Performance and Emissions Characteristics of a Spark Ignition Engine: A Study on Compressed Natural Gas as Fuel, Proceeding of United Kingdom and Malaysian Engineering Conference 2008, London, UK, 14 15 July 2008.

2. Semin, Nik Mohd Izual Nik Ibrahim, Rosli Abu Bakar, Abdul Rahim Ismail , Ismail Ali and Beny Cahyono, 2008. A Review of Green Engines Research and Development Based on Compressed Natural Gas, Proceeding of ICERT 2008, Penang, Malaysia, 28 – 30 May 2008.

3. Rosli Abu Bakar, Semin, Abdul Rahim Ismail, 2008. Application Review of Compressed Natural Gas as a Sustainable Alternative Fuel in the Internal Combustion Engines, Proceeding of IETBIC’08, Brunei Darussalam, 26 – 28 May 2008.

4. Abdul Rahim Ismail, Rosli Abu Bakar, Semin and Ismail Ali, 2008. Computer Modelling for 4-Stroke Direct Injection Diesel Engine, Proceeding of 1st International Conference on Emerging Technologies and Applications in Engineering (ICETAETS) 2008, Gujarat, India, 13 - 14 January 2008.

YEAR 2007:
1. Abdul Rahim Ismail, Rosli Abu Bakar, Semin, 2007. The Effect of Discharge Coefficient of Intake And Exhaust Valve For Direct Injection Engine, Proceeding of the International Conference on Mechanical Engineering 2007 (ICME2007), Dhaka, Bangladesh, 29 - 31 Dec 2007.

2. Rosli Abu Bakar, Semin, Abdul Rahim Ismail, 2007. Simulation of Diesel Engine Fueled by Compressed Natural Gas Performance Using GT-Power, Proceeding of 1st Engineering Conference (EnCon) 2007, Serawak, 27 - 28 December, 2007.

3. Rosli A. Bakar, Semin, A.R.Ismail, Ismail Ali, 2007. Computational Modelling of Compressed Natural Gas as an Alternative Fuel for Diesel Engines, Proceeding of Asia Pacific Natural Gas Vehicle Association (ANGVA) Conference and Exhibition 2007, Bangkok, Thailand, 26 - 29 November, 2007.

4. Semin, Abdul Rahim Ismail, Rosli Abu Bakar, 2007. In An Engine Valve Lift Visualization And Simulation Performance Using CFD, Proceeding of Conference on Applications and Design in Mechanical Engineering (CADME) 2007, Kangar, Perlis, Malaysia, 25 - 26 October 2007.

5. Rosli Abu Bakar, Semin, Abdul Rahim Ismail, Ismail Ali and Awang Idris, 2007. Fuel Nozzle Material Hole Simulation Effect of Direct Injection Diesel Engine Performance Using Computational Modeling, Proceeding of 10th International Symposium of Applied Material (ISAM) 2007, Islamabad, Pakistan, 3 - 7 September, 2007.

6. Abdul Rahim Ismail, Rosli Abu Bakar, Semin & Ismail Ali, 2007. Computer Modelling For 4-Stroke Direct Injection Diesel Engine, Proceeding of 7th International Conference on Fracture and Strength of Solids (FEOFS2007), Urumqi, China, August 27-29, 2007.

7. Rosli Abu Bakar, Semin, Abdul Rahim Ismail, 2007. Development of Intake & Exhaust Stroke Flow Simulation in an Engine Cylinder Using CFD Model, Proceeding of National Computer and Software Engineering Conference (NaCSEC), UMP, Malaysia, 20 - 21 August 2007.

8. Rosli Abu Bakar, Abdul Rahim Ismail, Semin, and Ismail Ali, 2007. The Comparison of Engine Performance for Diesel and CNG Fuel Using GT-Power Software, Proceeding of National Computer and Software Engineering Conference (NaCSEC), UMP, Malaysia, 20 - 21 August, 2007.

9. Rosli Abu Bakar, Semin, Abdul Rahim Ismail, 2007. Effect of Diesel Engine Performance Simulation using Computational Modeling, Proceeding of 5th Numerical Analysis Engineering (NAE) International Conference, Padang, Indonesia,18 - 19 May , 2007.

10. Rosli Abu Bakar, Semin, Abdul Rahim Ismail, 2007. The Internal Combustion Engines Diversification Technology and Fuel Research for the Future: A Review, Proceeding of Association of Engineering Education South East Asia Pacific (AEESEAP) Symposium, Kuala Lumpur, Malaysia, 14 February, 2007.

YEAR 2006:
1. Rosli Abu Bakar, Semin, 2006. The internal combustion engines diversification technology for the future : A review, Proceeding of International Seminar of Institute of Marine Engineering Sciences and Technology (IMarEST), Surabaya, Indonesia, November 3, 2006.

LIST OF PUBLICATION IN INTERNATIONAL JOURNALS:

YEAR 2010:

1. Semin, Abdul Rahim Ismail and T.F Nugroho. 2010. Experimental and Computational of Engine Cylinder Pressure Investigation on the Port Injection Dedicated CNG Engine Development, J. Applied Sci.10 (2), pp: 107-115, 2010. ISSN: 1812-5654.

YEAR 2009:

1. Semin, A. Idris and Rosli Abu Bakar. 2009. Effect of Port Injection CNG Engine using Injector Nozzle Multi Holes on Air-Fuel Mixing in Combustion Chamber, European Journal of Scientific Research 34 (1), pp: 16-24, 2009. ISSN: 1450-216X.

2. Semin, A. Idris, Rosli Abu Bakar. 2009. An Overview of Compressed Natural Gas as an Alternative Fuel and Malaysian Scenario, European Journal of Scientific Research 34 (1), pp: 6-15, 2009. ISSN: 1450-216X..

3. Semin, Abdul Rahim Ismail and Rosli Abu Bakar. 2009. Investigation of Torque Performance on the Sequential Injection CNG Engine Development, J. Applied Sci. 9 (13), pp: 2416-2423, 2009. ISSN: 1812-5654.

4. Semin, Rosli A. Bakar and Abdul R. Ismail. 2009. Compressed Natural Gas as an Alternative Fuel for Internal Combustion Engines: A Technical Review, International Review of Mechanical Engineering 3(2), pp: 188-195, 2009. ISSN: 1970 - 8734.

5. Semin, Abdul Rahim Ismail and Rosli Abu Bakar. 2009. Gas Fuel Spray Simulation of Port Injection Compressed Natural Gas Engine using Injector Nozzle Multi Holes, European Journal of Scientific Research 29(2), pp:188-193, 2009. ISSN: 1450-216X.

6. Semin, Rosli Abu Bakar and Abdul Rahim Ismail. 2009. Diesel Engine Converted to Port Injection CNG Engine using Gaseous Injector Nozzle Multi Holes Geometries Improvement: A Review, American J. of Engineering and Applied Sciences 2(2), pp. 268-278, 2009. ISSN: 1941-7020.

7. Semin, Abdul R. Ismail and Rosli A. Bakar. 2009. Effect of Diesel Engine Converted to Sequential Port Injection Compressed Natural Gas Engine on the Cylinder Pressure vs Crank Angle in Variation Engine Speeds, American J. of Engineering and Applied Sciences 2(1), pp.154-159, 2009. ISSN: 1941-7020.

8. Semin, Abdul Rahim Ismail and Rosli Abu Bakar. 2009. Combustion Temperature Effect of Diesel Engine Converted to CNG Engine, American J. of Engineering and Applied Sciences 2(1), pp: 212-216, 2009. ISSN: 1941-7020.

9. Semin, R.A Bakar, 2009. Port Injection CNG Engine In-Cylinder Pressure Performance Characteristic Investigation, International Journal of Natural and Engineering Sciences 3(2), 2009. ISSN: 1307-1149.

10. Semin, Awang Idris, Rosli Abu Bakar, Abdul Rahim Ismail 2009. Study of the Engine Cylinder Fluid Characteristics for Diesel Engine Converted to CNG Engine, European Journal of Scientific Research 26 (3), pp.443-452, 2009. ISSN: 1450-216X.

11. Semin, Rosli Abu Bakar and Abdul Rahim Ismail, 2009. An Experimental Investigation of Diesel Engines Fuel Injection Pressure Effect on Power Performance and Fuel Consumption, International Journal of Engineering 22 (1), Transactions B: Applications, April 2009, pp. 91-97. ISSN: 1025-2495, e-ISSN: 1735-9244.

12. Semin, Rosli Abu Bakar and Abdul Rahim Ismail, 2009. Green Engines Development Using Compressed Natural Gas as an Alternative Fuel: A Review, American Journal of Environmental Sciences 5(3): 371-381, 2009. ISSN: 1553-345X.

YEAR 2008:

1. Semin and Rosli Abu Bakar. 2008. A Technical Review of Compressed Natural Gas as an Alternative Fuel for Internal Combustion Engines, American J. of Engineering and Applied Sciences 1 (4), pp. 302-311, 2008. ISSN: 1941-7020.

2. Semin, Abdul R. Ismail and Rosli A. Bakar, 2008. Simulation Investigation of Intake Static Pressure of CNG Engine, International Review of Modelling and Simulations 1 (2), October 2008. ISSN: 1974-9821.

3. Semin, Abdul Rahim Ismail and Rosli Abu Bakar, 2008. Investigation of CNG Engine Intake Port Gas Flow Temperature Based on Steady-State and Transient Simulation, European Journal of Scientific Research 22 (3), pp:361-372, October, 2008. ISSN: 1450-216X.

4. Semin, Abdul Rahim Ismail and Rosli Abu Bakar, 2008. Engine Cylinder P-V Diagram of Diesel Engine Converted to CNG Engine, Journal of Engineering and Applied Sciences 3 (9): 718-724, 2008. ISSN: 1816-949X (Print), ISSN: 1818-7803 (Online).

5. Semin, Rosli Abu Bakar and Abdul Rahim Ismail, 2008. Liquid Fuel Injected of Diesel Engine Fuel Nozzle Injector Variation Holes Number, Australian Journal of Basic and Applied Sciences 2(3), pp: 388-396, 2008. ISSN: 1991-8178.

6. Semin, Abdul Rahim Ismail, Rosli Abu Bakar and Ismail Ali, 2008. Steady-state and Transient Simulation of Gas Flow Temperature of Intake Port Engine, Journal of Applied Sciences Research 4(7), pp: 767-777, 2008. ISSN: 1816-157X (P), ISSN: 1819-544X (O).

7. Semin and Rosli Abu Bakar, 2008. Study of Correlating an Engine Model to Plotted Characterization of In-Cylinder Pressure and Temperature Profile, Journal of Applied Sciences Research 4(6), pp: 658-668, 2008. ISSN: 1816-157X (P), ISSN: 1819-544X (O).

8. Semin, Rosli Abu Bakar, Abdul Rahim Ismail and Ismail Ali, 2008. Intake Port Gas Flow Pressure Profile Investigation of Port Injection CNG Engine Based on Engine Speed, International Journal of Natural and Engineering Sciences 2(2), pp: 97-103, 2008. ISSN: 1307-1149.

9. Semin, A. R. Ismail, R.A. Bakar and I. Ali, 2008. Effect Direct Injection Diesel Engine Convert to Sequential Injection CNG Engine in Intake Port Gas Flow Pressure, International Journal of Engineering 21 (3), Transactions B: Applications, October 2008, pp: 291-302. ISSN: 1025-2495, e-ISSN: 1735-9244.

10. Semin, Abdul Rahim Ismail, Rosli Abu Bakar and Ismail Ali, 2008. Heat Transfer Investigation of Intake Port Engine Based on Steady-state and Transient Simulation, American Journal of Applied Sciences 5 (11), pp: 1572-1579, 2008. ISSN: 1546-9239.

11. Abdul Rahim Ismail, Rosli Abu Bakar, Semin and Ismail Ali, 2008. Computer Modelling for 4-Stroke Direct Injection Diesel Engine, Advanced Materials Research Volumes 33-37, 2008, pp: 801-806.

12. Abdul Rahim Ismail, Rosli Abu Bakar and Semin, 2008. An Investigation of Valve Lift Effect on Air Flow and CD of Four Stroke Engines Based on Experiment, American Journal of Applied Sciences 5 (8), pp: 963-971, 2008. ISSN: 1546-9239.

13. Semin, Rosli Abu Bakar and Abdul Rahim Ismail, 2008. Investigation of Diesel Engine Performance Based on Simulation, American Journal of Applied Sciences 5 (6), pp: 610-617, 2008. ISSN: 1546-9239.

14. Semin, Rosli Abu Bakar and Abdul Rahim Ismail, 2008. Computational Visualization and Simulation of Diesel Engines Valve Lift Performance Using CFD, American Journal of Applied Sciences 5 (5), pp: 532-539, 2008. ISSN: 1546-9239.

15. Semin, Abdul Rahim Ismail and Rosli Abu Bakar, 2008. Comparative Performance of Direct Injection Diesel Engines Fueled Using CNG Based on GT-POWER Simulation, American Journal of Applied Sciences 5 (5), pp: 540-547, 2008. ISSN: 1546-9239.

16. Rosli Abu Bakar, Semin and Abdul Rahim Ismail, 2008. Fuel Injection Pressure Effect on Performance of Direct Injection Diesel Engines Based on Experiment, American Journal of Applied Sciences 5 (3), pp: 197-202, 2008. ISSN: 1546-9239.

17. Rosli Abu Bakar, Semin, Abdul Rahim Ismail and Ismail Ali, 2008. 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), pp: 110-116, 2008. ISSN: 1546-9239.

18. Semin and Rosli Abu Bakar, 2008. 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 3 (2): 229-240, 2008. ISSN: 0973-4562 (print).

19. N. M. I. N. Ibrahim, Semin, Rosli A. Bakar, Abdul R. Ismail and Ismail Ali, 2008. 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. ISSN: 1816-157X (Print), ISSN: 1819-544X (Online).

20. Semin, N. M. I. N. Ibrahim, Rosli A. Bakar and Abdul R. Ismail, 2008. In-Cylinder Flow through Piston-Port Engines Modeling using Dynamic Mesh, Journal of Applied Sciences Research 4(1): 58-64, 2008. ISSN: 1816-157X (Print), ISSN: 1819-544X (Online).

21. Semin, Rosli Abu Bakar and Abdul Rahim Ismail, 2008. Steady-state and Transient Simulation of Gas Flow Pressure in Intake Port Engine, Journal of Engineering and Applied Sciences 3 (1), pp: 47-54, 2008. ISSN: 1816-949X (P), ISSN: 1818-7803 (O).

YEAR 2007:

1. Semin, Rosli A. Bakar and A.R. Ismail, 2007. Engine Power Calculation using Air Flow through Engine from Flowbench Test Flow of Four Stroke DI Diesel Engines, Journal of Engineering and Applied Sciences 2 (12), pp: 1812-1817, 2007. ISSN: 1816-949X (P), ISSN: 1818-7803 (O).

2. Abdul Rahim Ismail, Semin and Rosli Abu Bakar, 2007. Valve Flow Discharge Coefficient Investigation for Intake and Exhaust Port of Four Stroke Diesel Engines, Journal of Engineering and Applied Sciences 2 (12), pp: 1807-1811, 2007. ISSN: 1816-949X (P), ISSN: 1818-7803 (O).

3. N.M.I.N. Ibrahim, Semin, Rosli Abu Bakar, Abdul Rahim Ismail and Ismail Ali, 2007. In-Cylinder Mass Flow Rate and Gas Species Concentration Simulation of Spark Ignition Engine, Journal of Engineering and Applied Sciences 2 (12), pp: 1795-1806, 2007. ISSN: 1816-949X (Print), ISSN: 1818-7803 (Online).

4. Semin and Rosli Abu Bakar, 2007. 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. ISSN: 1815-932X (P), ISSN: 1993-6079 (O).

5. Semin, Rosli Abu Bakar and Abdul Rahim Ismail, 2007. 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. ISSN: 1815-932X (P), ISSN: 1993-6079 (O).

6. Rosli Abu Bakar, Mohamad F. Othman, Semin, Abdul Rahim Ismail, 2007. The Compressed Natural Gas (CNG) Cylinder Pressure Storage Technology in Natural Gas Vehicles (NGV) Research Trends, MARINE-Journal of Marine Machineries Technology, Vol.4, No.1, pp: 18 – 24, July 2007. ISSN: 0216-9886.

7. Rosli Abu Bakar, Nik M.I.N. Ibrahim, Semin, Abdul Rahim Ismail, M.F.A.Rahim and Ismail Ali, 2007. In Cylinder Pressure Analysis of Two-Stroke Spark Ignition Engine, MARINE-Journal of Marine Machineries Technology, Vol.4, No.1, pp: 9 – 17, July 2007. ISSN: 0216-9886.

8. Semin, Rosli Abu Bakar, 2007. A Technical Review of the Future Internal Combustion Engines, MARINE-Journal of Marine Machineries Technology, Vol.4, No.1, pp: 1 – 8, July 2007. ISSN: 0216-9886.

9. Rosli Abu Bakar, Semin, 2007. Investigation of Fuel Nozzle Performance on Direct Injection Diesel Engines Using Computational Simulation, MARINE-Journal of Marine Machineries Technology, Vol.3, No.3, pp: 188 - 196, March 2007. ISSN: 0216-9886.

YEAR 2006:

1. Rosli Abu Bakar, Abdul Rahim Ismail, Semin, 2006. Simulation Development of Diesel Engine Fuelled Using Compressed Natural Gas, MARINE-Journal of Marine Machineries Technology, Vol.3, No.2, pp: 112 – 115, November 2006. ISSN: 0216-9886.

YEAR 2005:

1. Semin, Tony bambang M, Dodi Yulianto, 2005. Taper ratio analysis of lift coeffiecient and drag coefficient on wing of ground effect, MARINE-Journal of Marine Machineries Technology, Vol.1, No.3, pp: 20 - 26, March 2005. ISSN: 0216-9886.

2. Semin, Alim Widodo, Taufan Fara Ardiyan, 2005. Performance analysis of diesel engine using waste cooking oil methyl ester as a fuel. MARINE-Journal of Marine Machineries Technology, Vol.2, No.1, pp: 40 - 47, July 2005. ISSN: 0216-9886.

YEAR 2004:

1. Taufik Fajar Nugroho, Semin, Ikomudin, 2004. Loading and Unloading Design of Animal Load in Lamboo Traditional Ship, MARINE-Journal of Marine Machineries Technology, Vol.1, No.1, pp: 1 - 9, July 2004. ISSN: 0216-9886.

2. Semin, I. R. Kusuma, S. Hernowo, 2004. Performance analysis of Electro-hydrolic steering gear rotary vane type and rame type with simulation method. MARINE-Journal of Marine Machineries Technology, Vol.1, No.1, pp: 10 - 15, July 2004. ISSN: 0216-9886.

YEAR 2003:

1. Semin, 2003. Manpower of Maintenance Planning for Electric and Electronic System of MV. Leuser Passangerships, Journal Neptunus, Hang Tuah University Surabaya, Indonesia.

YEAR 2002:

1. Semin, Toto Soeharmono, 2002. Smoke Analysis on Passangers Room of MV. PAX 500, Journal of Science and Technology, Faculty of Engineering, Hang Tuah University, Surabaya, Indonesia.

2. Toto Soeharmono, Semin, 2002. Temperature Control System and Relative Humidity Analysis for Cooling Cargo Hold for Fruits Reefers, Journal Neptunus, Hang Tuah University, Surabaya, Indonesia.