Effect of Swirl Generator Intake Manifold on Engine Performance using Ethanol/Gasoline Blend


  • Beny Cahyono Department of Marine Engineering, Sepuluh Nopember Institut Technology Of Surabaya , Surabaya, Indonesia
  • Taufik Fajar Nugroho, Mardji
  • Rosli Abu Bakar


port injection gasoline engine, ethanol fuel, engine performance, swirl flow.


This study evaluates the effect of adding swirl generators to the intake manifold aims to make the turbulent air-flow on intake manifold and the increased mixture quality of fuel with air will also improve combustion process on spark ignition engine.

The experiment is done on a port injection gasoline engine, four-stroke, SOHC four cylinder connected to the engine dynamometer, which is used to measure the power.

An engine using ethanol blend fuel has higher fuel consumption, E10 fuel consumption average increase is 12%, and E20 fuel consumption increase is 14%. Performance in relation to the torque, E10 in the case Half Open Throttle at 2000 rpm reduces the engine torque by 3.8 %, at 4000 rpm the engine torque is reduced by 1.6%. E10 in the case of Wide Open Throttle at 2000 rpm reduce the engine torque by 3.4%, and at 4000 rpm reduces the torque by 1.2%. In the case of E20 at Half Open Throttle and rpm 2000 the engine torque reduces by 5.8%, and at 4000 rpm increases by 2.7%.

The addition of a swirl generator will increase the engine performance in the case of E20 at Half Open Throttle. The average engine torque increases from 10 until 13 %, in the case of Wide Open Throttle the engine torque increases by 9%. In the case of E10 with Half Open Throttle the engine torque increases by 9%, and with Wide Open Throttle increases by 8,5%. 


Bayraktar, H. 2007. Theoretical investigation of flame propagation process in an SI engine running on gasoline-ethanol blends. Renewable Energy. 32(5): 758-771.

Ceviz, M.A. 2007. Intake plenum volume and its influence on the engine performance, cyclic variability and emissions. Energy Conversion and Management. 48(3): 961-966.

Ceviz, M.A. and AkIn, M. Design of a new SI engine intake manifold with variable length plenum. Energy Conversion and Management. 51(11): 2239-2244.

El-Asrag, H., Lu, T., Law, C.K. and Menon, S. 2007. Simulation of soot formation in turbulent premixed flames. Combustion and Flame. 150(1-2): 108-126.

Erdil, A., Kodal, A. and Aydin, K. 2002. Decomposition of Turbulent Velocity Fields in an SI Engine. Flow, Turbulence and Combustion. 68(2): 91-110.

Gatowski JA, Heywood JB, Deleplace C. 1984. Flame photographs in a spark-ignition engine. Combust Flame. 56:71–81.

Guibert, P., Keromnes, A. and Legros, G. An Experimental Investigation of the Turbulence Effect on the Combustion Propagation in a Rapid Compression Machine. Flow, Turbulence and Combustion. 84(1): 79-95.

Han, J.O. and Kim, S.S. 1992. Effects of swirl on high-speed combustion in a single-shot optical SI engine. Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering. 206(4): 237-247.

Haywood, J. B. 1988. Internal combustion engine fundamental. McGraw-Hill.

Hill, P.G. and Zhang, D. 1994. The effects of swirl and tumble on combustion in spark-ignition engines. Progress in Energy and Combustion Science. 20(5): 373-429.

Inoue, T., Iguchi, S., and Yamada, T. (1988). In cylinder gas motion, mixture

formation and combustion of 4-valve lean burn engine, 9th International Wienna Motor Symposium, VDI 99: 200-218.

Joo, S., Chun, K. and Shin, Y. 2000. Swirl effect on the flame propagation at idle in a spark ignition engine. Journal of Mechanical Science and Technology. 14(12): 1412-1420.

Lee, K., Bae, C. and Kang, K. 2007. The effects of tumble and swirl flows on flame propagation in a four-valve S.I. engine. Applied Thermal Engineering. 27(11-12): 2122-2130.

Li, Y., Liu, S., Shi, S. and Xu, Z. 1998. The effect of in-cylinder tumble motion on combustion in a four-valve SI engine. Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics. 19(1).

Lucas GG, Brunt MFJ. 1982. The effect of combustion chamber shape on the rate of combustion in a spark ignition engine. SAE Paper no. 820165:714–29.

Namazian M, Hansen S, Lyford PE, Sanchez BJ, Heywood J, Rife J. 1980. Schlieren visualization of the flame and density fields in the cylinder of a spark-ignition engine. SAE Paper no. 800044:276–303.

Poulos SG, Heywood JB.1983. The effect of chamber geometry on spark-ignition engine combustion. SAEPaper no. 830334:1106–29

Tagalian J, Heywood JB. 1986. Flame initiation in a spark-ignition engine. Combust Flame;64:243–6.

Yamaguchi, K., Yamamoto, H., Shiraishi, T. and Ohsuga, M. 1996. Influence of mixture preparation on HC emission of SI engine with high swirl ratio under cold conditions. JSAE Review. 17(2): 107-112




How to Cite

Cahyono, B., Mardji, T. F. N., & Abu Bakar, R. (2017). Effect of Swirl Generator Intake Manifold on Engine Performance using Ethanol/Gasoline Blend. Asian Journal of Applied Sciences, 4(6). Retrieved from https://www.ajouronline.com/index.php/AJAS/article/view/4338