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undergraduate thesis
Numerička analiza utjecaja geometrijskih i radnih parametara na pojavu detonacije u Ottovom motoru
Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2018. urn:nbn:hr:235:630045
Savović, Borna
University of Zagreb
Faculty of Mechanical Engineering and Naval Architecture

Institutional repository: Repository of Faculty of Mechanical Engineering and Naval Architecture University of Zagreb

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Savović, B. (2018). Numerička analiza utjecaja geometrijskih i radnih parametara na pojavu detonacije u Ottovom motoru (Undergraduate thesis). Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture. Retrieved from https://urn.nsk.hr/urn:nbn:hr:235:630045

Savović, Borna. "Numerička analiza utjecaja geometrijskih i radnih parametara na pojavu detonacije u Ottovom motoru." Undergraduate thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2018. https://urn.nsk.hr/urn:nbn:hr:235:630045

Savović, Borna. "Numerička analiza utjecaja geometrijskih i radnih parametara na pojavu detonacije u Ottovom motoru." Undergraduate thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2018. https://urn.nsk.hr/urn:nbn:hr:235:630045

Savović, B. (2018). 'Numerička analiza utjecaja geometrijskih i radnih parametara na pojavu detonacije u Ottovom motoru', Undergraduate thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, accessed 20 December 2024, https://urn.nsk.hr/urn:nbn:hr:235:630045

Savović B. Numerička analiza utjecaja geometrijskih i radnih parametara na pojavu detonacije u Ottovom motoru [Undergraduate thesis]. Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture; 2018 [cited 2024 December 20] Available at: https://urn.nsk.hr/urn:nbn:hr:235:630045

B. Savović, "Numerička analiza utjecaja geometrijskih i radnih parametara na pojavu detonacije u Ottovom motoru", Undergraduate thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, 2018. Available at: https://urn.nsk.hr/urn:nbn:hr:235:630045

Metadata
TitleNumerička analiza utjecaja geometrijskih i radnih parametara na pojavu detonacije u Ottovom motoru
Title (english)Numerical analysis of influence of design and operating parameters on occurrence of knock in a spark ignited engine
AuthorBorna Savović
MentorDarko Kozarac (mentor)
GranterUniversity of Zagreb
Faculty of Mechanical Engineering and Naval Architecture
Zagreb
Defense date and country2018-02-28, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Mechanical Engineering
Abstract
Detonacija je neželjeni način izgaranja koji se najčešće javlja na motorima s Ottovim procesom izgaranja. Intenzitet detonacija može biti blaže prirode i očitovati se vibracijama u motoru i pojačanim zagrijavanjem komponenata, a može biti i intenzivnije prirode što u vrlo kratkom periodu može dovesti do havarije motora. Na pojavu detonacije u radu Ottovih motora utječu razni geometrijski i radni parametri. Najvažniji su trenutak pretpaljenja, kompresijski omjer i faktor pretička zraka. U svrhu numeričke analize utjecaja promjene geometrijskih i radnih parametara na pojavu detonacije u Ottovom motoru korišten je programski paket AVL Boost. Sva ispitivanja su provedena za pet različitih opterećenja (20, 40, 60, 80 i 100%) na modelu motora koji je prethodno napravljen. Analizira se utjecaj promjene kompresijskog omjera, početka izgaranja, temperature rashladnog medija, nabijanja, opterećenja te brzine vrtnje motora na povećavanje, odnosno smanjenje sklonosti pojave detonacije u radu Ottovog motora.
Abstract (english)
A knock is an unwanted type of combustion which usually occurs in engines with Otto cycle process. The intensity of knock can be smaller and cause vibrations and overheating or, in case of its higher intensity, it can be potentially devastating and cause failure of the engine in a very short time. The occurrence of the knock is influenced by various geometrical and working parameters. The most important of them are: time of ignition, compression ratio and air to fuel ratio. For the purpose of the numerical analysis of the influence of changing geometrical and working parameters on the occurrence of the knock in Otto engines, the computer program AVL Boost has been used. All tests have been made for five different loads of engine (20, 40, 60, 80 i 100%) on model of engine which had previously been made. The influence of changing of compression ratio, start of ignition, temperature of cooling liquid, supercharging, load of engine, rotation speed on the increase or decrease in the chance of the knock is analysed.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:235:630045
Study programmeTitle: Mechanical Engineering
Study programme type: university
Study level: undergraduate
Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka strojarstva (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka strojarstva)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2019-05-22 22:04:45