Erinç ULUDAMAR, Mustafa ÖZCANLI, Kerimcan ÇELEBİ, Kadir AYDIN

Investigating the noise generation of a compression ignition engine at different filters

Noise is a very important phenomena for passenger comfort in a vehicle. Engine of the vehicles produce disturbing noises in different frequencies. In the application of acoustic, there are different filters to predict the sound pressure level and disturbing noises. The aim of the present study is to investigate the noise characteristic of a compression ignition engine at different weighting filters. In the experiments, the engine was fuelled with low sulphur diesel and sunflower biodiesel fuels and it run at different engine speeds ranging from 1200 to 2400 rpm, with steps of 300 rpm. The results indicated that noise characteristic of compression engine with engine speed shows different trends at A- weighting filter than C- and Z- weighting filters especially at 1500 rpm. Moreover, in the study, it was cleared that the SPL decrease with the addition of biodiesel fuel regardless of its ratio.

Keywords:

Noise, Acoustic filter, Biodiesel, Compression ignition engine,

PDF

___

[1] Jung W, Elliott SJ, Cheer J., (2019) "Local active control of road noise inside a vehicle", Mech Syst Signal Process, vol.121, pp.144–157
[2] Zhang P. X. (2005). Psychoacoustics. In: Ballou G. M. (eds.) Handbook for Sound Engineers. 4th ed. USA:Elsevier Inc.
[3] Patel C, Tiwari N, Agarwal AK., (2019) "Experimental investigations of Soyabean and Rapeseed SVO and biodiesels on engine noise, vibrations, and engine characteristics", Fuel, vol.238, pp.86–97
[4] Torregrosa AJ, Broatch A, Gil A, Gomez-Soriano J., (2018) "Numerical approach for assessing combustion noise in compression-ignited Diesel engines", Appl Acoust, vol.135, pp.91–100
[5] Sancho S, Gaja E, Peral-Orts R, Clemente G, Sanz J, Velasco-Sánchez E., (2017) "Analysis of sound level emitted by vehicle regarding age", Appl Acoust, vol.126, pp.162–169
[6] Hoffmann A, Kropp W., (2019) "Auralization of simulated tyre noise: Psychoacoustic validation of a combined model", Appl Acoust, vol.145, pp.220–227
[7] Sinay J, Balážiková M, Dulebová M, Markulik Š, Kotianová Z., (2018) "Measurement of low-frequency noise during CNC machining and its assessment", Meas J Int Meas Confed, vol.119, pp.190–195
[8] Çalık A., (2018) "Determination of vibration characteristics of a compression ignition engine operated by hydrogen enriched diesel and biodiesel fuels", Fuel, vol.230, pp.355–358
[9] Taghizadeh-Alisaraei A, Ghobadian B, Tavakoli-Hashjin T, Mohtasebi SS, Rezaei-asl A, Azadbakht M., (2016) "Characterization of engine’s combustion-vibration using diesel and biodiesel fuel blends by time-frequency methods: A case study", Renew Energy, vol.95, pp.422–432