RESEARCH PAPER
Power affects to the sound pressure of a four-stroke engine
1
Department of Mechanical and Material Engineering, Vilnius Gediminas Technical University, Lithuania
2
Institute of Mechanical Science, Vilnius Gediminas Technical University, Lithuania
3
Department of Automobile Engineering, Vilnius Gediminas Technical University, Lithuania
Submission date: 2019-11-13
Final revision date: 2019-12-17
Acceptance date: 2019-12-18
Publication date: 2019-12-23
Corresponding author
The Archives of Automotive Engineering – Archiwum Motoryzacji 2019;86(4):143–150
KEYWORDS
TOPICS
ABSTRACT
The noise generated by the four-stroke S320 Andoria internal combustion engine is a complex field of study because the total sound pressure is the sum of the sound pressures produced by each engine component. The noise level and sound frequency of diesel engines used in agricultural machinery are highly dependent on fuel combustion. The standard diesel fuel conforming to EN 115 was used in the tests. Sound pressure was measured with the Bruel & Kjear equipment. Investigations show the dynamics of the dynamic parameters of the four-stroke engine, which must be evaluated when operating agricultural machinery. Experimental research of power influence on sound pressure of four-stroke diesel engine was performed. The dependence of the sound pressure level on the variation of the motor power was determined. Studies have shown that as the engine power increases from 2.63 to 9.48 kW, the sound pressure standard deviation increases by about 0.041 Pa.
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