Experimental investigation of vibrations and noise characterization for spark ignition engine

Abstract

An experimental study was carried out for measuring vibrations, noise and combustion characteristics associated correlations using a four-cylinder spark ignition engine. This study aims to investigate the effects of vibrations and noise on spark-polishing machines that are triggered by pure gasoline. This test runs at 15% engine load and 20% with engine speed 1000-2200 rpm at intervals of 300 rpm. The measurement of engine vibration in pistonic uses PCB Piezotronics ICP® Accelerometer (352C22). Overall tests that have been carried out for 20% loads at 1900 and 2200 maximum vibrations, the velocity is 0.214 and 0.234, compared to 0.617 and 0.562 for 15% loads. From the results of engine vibration analysis, it can be reported that increasing engine speed and the load is given engine vibration can significantly decrease. Generally, noise increases for all samples tested; however, reduced noise is recorded when speed and engine load increase. This observation is also consistent with other observations related to vibration and combustion noise, heat release rates, and ignition delays.

Comparison of Diesel Engine Vibroacoustic Properties Powered by Bio and Standard Fuel

“…The aim of this work was to determine the influence of the biofuel (fuel mixture) on engine vibrations. The vibrations have a direct influence on machine gradation [15,20,22,35] and ergonomics [6]. The research was carried out on a laboratory stand on a modern diesel engine powered with fuel, with a 10% addition of bio fuel and standard fuel as a reference point for discussion of the results.…”

“…When examining the influence of the fuel independent of engine speed, it may be observed that the relationship between the load and vibration is no longer so strong, and by means of maximum values, it departs from the unambiguity (Table 3. Items [14][15][16][17][18][19]. The analysis of the obtained results allowed us to identify the values of extreme vibration accelerations for the tested engine (Table 3, items 1 and 2), which is important in order to determine the range of the tested quantity.…”

“…On the other hand, in works [12,13], the thermodynamic evaluation of combustion processes was made in relation to vibroacoustic signals. The description of the combustion process in a diesel engine in the context of vibration acceleration signals of the engine block was made in [14], and in [15], the general conditions of conducting an experiment with the use of the vibroacoustic technique to examine the characteristics of engine operation were described.…”

Pengaruh Jenis Bahan Bakar Gasolin Terhadap Prestasi, Pembakaran, Getaran, Kebisingan, Dan Emisi Gas Buang Pada Mesin Type Tv-1

“…Mesin bensin 4 silinder dan 4 langkah dengan variasi putaran 1000 -2000 rpm dengan beban mesin 15 dan 20% telah dianalisis getaran dan kebisingan yang dihasilkan. Dari hasil analisis getaran memperlihatkan bahwa peningkatan kecepatan dan beban mesin berefek pada penurunan getaran dan kebisingan yang signifikan [6] Sharma et all (2019) menyatakan bahwa karakteristik pembakaran mesin mempengaruhi kebisingan dan getaran mesin yang terjadi selain dari konstribusi dari komponen mesin yang bergerak, sedangkan karakteristik pembakaran tergantung pada parameter operasi mesin seperti jenis bahan bakar, beban dan kecepatan mesin, waktu percikan, dan lain-lain [7].…”

Investigations on the noise and vibration characteristics of SI engine powered with single and dual alcohol blends - performance, combustion, and emission studies

“…Unbalanced rotational and reciprocating masses, inertia forces of various parts, mis re, and cyclic uctuations in gas pressure caused by the combustion process contribute to engine vibrations [15,17]. The critical parameters of engine vibration and noise include the mechanical structure of the engine, engine load, engine speed, engine oil qualities, and fuel properties [18][19][20][21]. Gravalos et al [22] studied the vibration behavior of a spark-ignition engine using three different fuels: unleaded gasoline, ethanol-gasoline blend, and methanol-gasoline blend.…”