ordu univ. j. sci. tech.

Ordu Üniversitesi Bilim ve Teknoloji Dergisi

2146-6440 2146-6459

Ordu University

Engineering

Mühendislik

Performance Analysis of a Two Stroke Reverse-Uniflow Gasoline Engine

İki Zamanlı Ters-Doğru Akışlı Benzinli Bir Motorun Performans Analizi

https://orcid.org/0000-0003-1075-7835

Kaya

Göksel

https://orcid.org/0000-0002-7711-6357

Özdalyan

Bülent

12 15 2017

7 2 170 182 05 08 2017 10 20 2017

2011

Ordu University Journal of Science and Tecnology

In this study, the cycle analysis of two stroke reverse-uniflow, carburettor, spark ignition engine was determined by using a theoretical mathematical model and the performance of the engine and the exhaust emissions were investigated by experiments. A thermodynamic model that includes real cycle calculations of the engine has been developed for theoretical cycle analysis and the diagrams that reveal the performance of the engine has been obtained by writing a computer program that was developed in MATLAB programming language. In the experimental stage of this study, firstly, the experiments were realized in order to determine the engine performance parameters at under full and low loads, between 1000 rpm and 2000 rpm engine revolution by changing it with 200 rpm interval. Then, the engine was started at 1800 rpm fixed speed with full and partial loads and the exhaust emission values were determined. The theoretical analysis results and empirical results of the engine performance parameters were compared to each other. Also, the empirical results have been compared with the performances of a classical two-stroke engine and a four-stroke engine

Bu çalışmada, iki zamanlı ters-doğru akışlı, karbüratörlü, buji ile ateşlemeli bir motorun çevrimanalizi teorik matematiksel model kullanılarak belirlenmiş ve yapılan deneylerle motorunperformansı ve egzoz emisyonları incelenmiştir. Teorik çevrim analizi için motorun gerçekçevrim hesaplamalarını içeren termodinamik bir model geliştirilmiş ve bu modele göre MATLABprogramlama dilinde bir bilgisayar programı yazılarak motorun performansını ortaya koyandiyagramlar elde edilmiştir. Yapılan bu çalışmanın deneysel aşamasında öncelikle, motorperformans parametrelerinin belirlenmesi amacıyla, tam ve kısmi yüklerde, 1000 rpm ile 2000rpm arasında 200 rpm aralıklarla motor devri değiştirilerek deneyler gerçekleştirilmiştir. Dahasonra, motor 1800 rpm’lik sabit hızda, tam ve kısmi yüklerde çalıştırılarak egzoz emisyondeğerleri belirlenmiştir. Motor performans parametrelerinin, teorik analiz sonuçları ve deneyselverileri birbirleriyle karşılaştırılmıştır. Ayrıca elde edilen deneysel sonuçlar klasik iki zamanlı birmotorun ve dört zamanlı bir motorun performans değerleriyle kıyaslanmıştır.

İki zamanlı motor Motor performansı Egzoz emisyonu Benzinli motor MATLAB

Two stroke engine Engine performance Exhaust emission Gasoline engine MATLAB

1. Alahmer, A. and Aladayleh, W., (2016). “Effect two grades of octane numbers on the performance, exhaust and acoustic emissions of spark ignition engine”, Fuel, 180, 80-89

2. Anh, T., Duc, T., Thu, H. and Van, T., (2013). “Improving performance and reducing pollution emissions of a carburetor gasoline engine by adding HHO gas into the intake manifold”, SAE Technical Paper, 2013-01-0104

3. Andrawi, A., M., Aziz, A., A., Said, M., F., M. and Latiff, Z., A., (2014). An Experimental Study On The Influence Of EGR Rate and Fuel Octane Number On The Combustion Characteristics Of A CAI Two-Stroke Cycle Engine, Applied Thermal Engineering, 71, 248-258

4. Bosman, C.B. and Goldsborough, S., 2008, Developing A 10 cc Single-Valve, Reverse Uniflow, 2S Engine, SAE, Paper No: 2008-01-0953

5. Carlucci, A. P., Ficarella, A., Laforgia, D. and Renna, A., (2015). “Supercharging system behavior for high altitude operation of an aircraft 2-stroke diesel engine”, Energy Conversion and Management, 101, 470-480

6. Carlucci, A. P., Ficarella, A., Laforgia, D. and Longo, M., (2015). “An easy and inexpensive to estimate the trapping efficiency of a two stroke engine”, Energy Procedia, 82, 17-22

7. Ghazikhani, M., Hatammi, M., Safaria, B. and Ganji, D. D., (2014). “Experimental investigation of exhaust temperature and delivery ratio effect on emissions and performance of a gasoline–ethanol two-stroke engine”, Case Studies in Thermal Engineering, 2, 82-90

8. Holman J.P., (1971). Experimental Methods for Engineers, McGrawHill Book Company, New York, 37-52

9. Johnson, M.V. and Goldsborough, S.S., (2008) A small-Scale Flow Rig for Swirl Studies of A Single-Valve, Reverse Uniflow 2S Engine, SAE, Paper No: 2008- 01-0609

10. Junpei, K. and Yasuo, M., (2004) Performance Tests of Reverse-Uniflow Type 2- Stroke Direct Injection Gasoline Engine. World Automotive Congress. Spain

11. Liu, Y., Zhang, F., Zhao, Z., Dong, Y., Ma, F. and Zhang, S., (2016). “Study on the synthetic scavenging model validation method of opposed-piston two-stroke diesel engine”, Applied Thermal Engineering, 104, 184-192

12. Moriyoshi, Y., Kukuchi, K., Morikawa, K. and Takimoto, H., (2001). Numerical Analysis of Mixture Preparation in a Reverse Uniflow-Type Two-Stroke Gasoline DI Engine, SAE, Paper No: 2001-01-1815

13. Moriyoshi, Y., Kukuchi, K., Morikawa, K. and Takimoto, H., (2001). Development and Evaluation of A Reverse Uniflow-Type Two-Stroke Gasoline DI Engine, SAE, Paper No: 2001-01-1839

14. Moriyoshi, Y., Morikawa, K. and Takimoto, H., (2002). Analysis of a Mixture Formation Process In A Reverse Uniflow-Type Two-Stroke Gasoline DI Engine, SAE, Paper No: 2002-32-1774

15. Moriyoshi, Y., Arai, M., Katsuta, J. and Morikawa, K., (2004). Performance Tests of Reverse-Uniflow Type 2-Stroke Direct Injection Gasoline Engine, SAE, Paper No: 2004-32-0040

16. Moriyoshi, Y., Arai, M., Katsuta, J. and Morikawa, K., (2004). Performance Analysis of Reverse-Uniflow Type 2-Stroke Direct Injection Gasoline Engine, SAE, Paper No: 2004-08-0088

17. Omidi Kashani, B., (2004). The Improvement Of Combustion Process and Reduction Of Unburned Hydrocarbon Emission In A Two-Stroke Motorcycle, Iranian Journal of science & Technology, Transaction B: Engineering, 28, 505- 508

18. Payri, F., Galindo, J., Climent, H., Pastor, J.M. and Gaia, C., (2001). Optimisation Of The Scavenging And Injection Processes Of An Air-Assisted Direct Fuel Injection 50cc 2-Stroke S.I. Engine By Means Of Modeling, SAE, Paper No: 2001-01-1814

19. Savioli, T., Zardin, B., and Borghi, M., (2017). “Development of a 2-Stroke GDI Engine”, Energy Procedia, 126, 1091-1098

20. Tribotte, P., Ravet, F., Dugue, V., Obernesser and P., Quechon, N., (2012). Two Strokes Diesel Engine –Promising Solution to Reduce CO2 Emissions, Procedia – Social and Behavioral Sciences, 48, 2295-2314