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master's thesis
Ispitivanje i analiza značajki rada dvo-gorivnog motora
Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2016. urn:nbn:hr:235:263290
Blažić, Mislav
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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Blažić, M. (2016). Ispitivanje i analiza značajki rada dvo-gorivnog motora (Master's thesis). Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture. Retrieved from https://urn.nsk.hr/urn:nbn:hr:235:263290

Blažić, Mislav. "Ispitivanje i analiza značajki rada dvo-gorivnog motora." Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2016. https://urn.nsk.hr/urn:nbn:hr:235:263290

Blažić, Mislav. "Ispitivanje i analiza značajki rada dvo-gorivnog motora." Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2016. https://urn.nsk.hr/urn:nbn:hr:235:263290

Blažić, M. (2016). 'Ispitivanje i analiza značajki rada dvo-gorivnog motora', Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, accessed 19 December 2024, https://urn.nsk.hr/urn:nbn:hr:235:263290

Blažić M. Ispitivanje i analiza značajki rada dvo-gorivnog motora [Master's thesis]. Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture; 2016 [cited 2024 December 19] Available at: https://urn.nsk.hr/urn:nbn:hr:235:263290

M. Blažić, "Ispitivanje i analiza značajki rada dvo-gorivnog motora", Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, 2016. Available at: https://urn.nsk.hr/urn:nbn:hr:235:263290

Metadata
TitleIspitivanje i analiza značajki rada dvo-gorivnog motora
Title (english)Testing and performance analysis of dual fuel engine
AuthorMislav Blažić
MentorDarko Kozarac (mentor)
GranterUniversity of Zagreb
Faculty of Mechanical Engineering and Naval Architecture
Zagreb
Defense date and country2016-07-15, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Mechanical Engineering
Abstract
Porastom ekološke osviještenosti, prirodni plin postaje jedno od boljih alternativnih goriva, zbog svoje dostupnosti i niske cijene. Istraživanja su pokazala kako upotreba prirodnog plina kao transportnog goriva donosi mnoga poboljšanja u pogledu emisija. Upotreba prirodnog plina u motorima s kompresijskim paljenjem se istražuje kao novi koncept zbog veće efikasnosti takvih motora. Međutim, zbog visoke oktanske vrijednosti prirodnog plina, potreban je drugi izvor paljenja za što se može koristiti ubrizgavanje goriva s visokim cetanskim brojem. Taj tip izgaranja naziva se dvo-gorivno izgaranje. Cilj ovog istraživanja je postaviti i istražiti dvo-gorivni motor koji koristi kombinaciju dizelskog goriva i prirodnog plina. Postojeći dizelski motor je prenamijenjen kako bi mogao ostvariti dvo-gorivni način rada. Nakon uspješne prenamjene, utjecaji mase ubrizganog dizelskog goriva, trenutka ubrizgavanja, tlaka ubrizgavanja i brzine vrtnje na značajke rada motora su istraženi. Istraživanje je pokazalo kako se kombinacijom optimalnih parametara motora može postići smanjenje emisija i povećanje stabilnosti izgaranja na srednjem i visokom opterećenju. S druge strane, rad na niskom opterećenju je karakteriziran s niskom stabilnošću izgaranja uz visoke emisije neizgorjelih ugljikovodika (HC) i ugljikov monoksida (CO).
Abstract (english)
With the increase of ecology standards, implementation of gaseous fuels is being studied. One of the most researched alternative fuels, due to its widespread availability and low cost is natural gas. It has been shown that the use of natural gas as a transportation fuel implies many improvements in terms of emissions. Due to the higher efficiency of compression ignited engines, implementation of natural gas in compression ignited engines is being studied. However, because of the high octane rating of natural gas, a small amount of high cetane fuel must be used to ignite the mixture. The engine then uses different fuels at the same time and is called a dual fuel engine. The objective of this thesis is to setup and study the diesel-methane dual fuel engine. An existing diesel engine has been converted to be able to run in the dual fuel operating mode. After the successful conversion, influences of the mass of injected diesel fuel, of the injection timing, of injection pressure and of engine speed on engine performance and emissions have been studied. It has been found that good combustion stability and lower emissions can be achieved at mid and high load with an optimum combination of engine parameters. On the other hand, operation under low load is characterized with unstable combustion coupled with low efficiency and high HC and CO emissions.
Keywords
Keywords (english)
Languageenglish
URN:NBNurn:nbn:hr:235:263290
Study programmeTitle: Mechanical Engineering
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra inženjer/inženjerka strojarstva (magistar/magistra inženjer/inženjerka strojarstva)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2019-05-22 16:54:20