zaključna naloga Univerzitetnega študijskega programa I. stopnje Strojništvo - Razvojno raziskovalni program
Tim Curk (Author), Jurij Prezelj (Mentor)

Abstract

Avtomobili z notranjim izgorevanjem ustvarjajo različne hrupe, hrup izpušne cevi je med njimi najglasnejši. Potrebno je izvedeti, kakšne doprinose k dušenju zvoka imajo različni dušilni elementi celotnega izpušnega sistema in jih nato predelati in dodelati z uporabo simulacijskih orodij ter tako preveriti zvočno raven in padec le-te skozi celoten sistem. Pregledu celotne teoretične osnove izpušnih komponent in njihovega delovanja sledi preizkus v fizični obliki s pomočjo merilnih orodij nato pregled trenutno vgrajenih elementov sistema in predstavitev možnih nadgradenj ter udejanjanje teh v simulacijah. S pomočjo računalniških orodij primerjamo rezultate predelav s trenutnim izpušnim sistemom ter prikažemo primerjavo zvočne ravni simulacije in meritev in opredelimo verodostojnost tovrstne simulacije in morebitno nadaljnjo uporabo pri razvijanju izpušnih sistemov.

Keywords

diplomske naloge;motorji;notranje izgorevanje;akustika cevi;aeroakustika;izpušni sistemi;dirkalniki;frekvenčni odzivi;akustična simulacija;dušilci zvoka;

Data

Language: Slovenian
Year of publishing:
Typology: 2.11 - Undergraduate Thesis
Organization: UL FS - Faculty of Mechanical Engineering
Publisher: [T. Curk]
UDC: 519.876.5+534.6(043.2)
COBISS: 122255107 Link will open in a new window
Views: 259
Downloads: 39
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Other data

Secondary language: English
Secondary title: Acoustic analysis and optimization of a performance automotive exhaust system.
Secondary abstract: Internal combustion automobiles produce a variety of noises, the loudest of which is the exhaust pipe noise. It is necessary to find out the contribution to sound attenuation of different silencing elements of the whole exhaust system and then to process and/or refine them using simulation tools to check the sound level and its drop through the whole system. An overview of the overall theoretical basis of exhaust components and their operation is followed by a physical test using measurement tools, then an overview of the currently installed system components and a presentation of possible upgrades and their implementation in simulations. Using computer aided tools, we compare results of the conversions with the current exhaust system and show the comparison betweeen simulated and physically measured noise levels to determine the validity of such simulations and possible further use in exhaust development.
Secondary keywords: thesis;internal combustion engine;pipe acoustics;aeroacoustics;exhaust system;race cars;frequency response;acoustic simulation;silencers;
Type (COBISS): Final paper
Study programme: 0
Embargo end date (OpenAIRE): 1970-01-01
Thesis comment: Univ. v Ljubljani, Fak. za strojništvo
Pages: XV, 34 f.
ID: 16391506
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