Determination of Vibration Characteristics on Vertical Axis of a Four Cylinder Gasoline Engine

Öz

The vibration characteristics on the vertical axis of a four cylinder 1.4 L Otto engine was investigated under partial throttle opening rates and different engine speeds, in the study. In the first part of the study, vibration measurements were made in terms of acceleration on the top of engine block. The vibration data were determined in 5 partial throttle opening rates (%10, %20, %30, %40, %50) and for 4 engine speeds (1400 RPM, 2000 RPM, 3000 RPM and 4000 RPM) as RMS (Root mean square) and illustrated with graphs. With polynomial regression method, the characteristics equations for each throttle opening have been formed. In the second part, the measurements were made by changing engine speeds for each throttle opening and the obtained results were compared with the results determined from the equations.

Anahtar Kelimeler

• Engine vibration,polynomial regression,throttle rate,root mean square,engine s peed

Determination of Vibration Characteristics on Vertical Axis of a Four Cylinder Gasoline Engine

Öz

The vibration characteristics on the vertical axis of a four cylinder 1.4 L Otto engine was investigated under partial throttle opening rates and different engine speeds, in the study. In the first part of the study, vibration measurements were made in terms of acceleration on the top of engine block. The vibration data were determined in 5 partial throttle opening rates (%10, %20, %30, %40, %50) and for 4 engine speeds (1400 RPM, 2000 RPM, 3000 RPM and 4000 RPM) as RMS (Root mean square) and illustrated with graphs. With polynomial regression method, the characteristics equations for each throttle opening have been formed. In the second part, the measurements were made by changing engine speeds for each throttle opening and the obtained results were compared with the results determined from the equations.

Anahtar Kelimeler

• Engine vibration,polynomial regression,throttle rate,root mean square,engine s peed

Kaynakça

1. Pulkrabek, W., “Engineering Fundamentals of the Internal Combustion Engine”, John Wiley & Sons, 2001.
2. Çetinkaya, S., “Motor Dinamiği”, Nobel Publishing, 1999.
3. Karabulut, H., Öztürk E. and Çınar, C., “Dynamic Modeling and Investigation of Vibrations of a Single Cylinder Four-Stroke Diesel Engine”, J. Fac. Eng., Arch. Gazi University, vol. 26(1), pp. 173-183, 2011.
4. Barelli, L., Bidini, G., Buratti, C. and R. Mariani, ‘‘Diagnosis of Internal Combustion Engine through Vibration and Acoustic Pressure Non-intrusive Measurements’’, Applied Thermal Engineering, vol.29(8), pp. 1707-1713, 2009.
5. Manieniyan, V. and Sivaprakasam, S., ‘‘Vibration Analysis in DI Diesel Engine Using Diesel and Biodiesel’’, International Journal of Engineering Trends and Technology (IJETT), vol.4, Aug. 2013.
6. Wongchai, B., Visuwan, P. and Chuepeng, S., ‘‘The Vibration Analysis of Diesel Engine with Hydrogen-Diesel Dual Fuel’’, American Journal of Applied Sciences, vol. 10(1),pp. 8-14, 2013.