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master's thesis
Simulacija pročišćavanja ispušnih plinova u trokomponentnom katalizatoru Ottoovog motora
Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2019. urn:nbn:hr:235:570063
Buntić, Matej
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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Buntić, M. (2019). Simulacija pročišćavanja ispušnih plinova u trokomponentnom katalizatoru Ottoovog motora (Master's thesis). Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture. Retrieved from https://urn.nsk.hr/urn:nbn:hr:235:570063

Buntić, Matej. "Simulacija pročišćavanja ispušnih plinova u trokomponentnom katalizatoru Ottoovog motora." Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2019. https://urn.nsk.hr/urn:nbn:hr:235:570063

Buntić, Matej. "Simulacija pročišćavanja ispušnih plinova u trokomponentnom katalizatoru Ottoovog motora." Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2019. https://urn.nsk.hr/urn:nbn:hr:235:570063

Buntić, M. (2019). 'Simulacija pročišćavanja ispušnih plinova u trokomponentnom katalizatoru Ottoovog motora', Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, accessed 20 December 2024, https://urn.nsk.hr/urn:nbn:hr:235:570063

Buntić M. Simulacija pročišćavanja ispušnih plinova u trokomponentnom katalizatoru Ottoovog motora [Master's thesis]. Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture; 2019 [cited 2024 December 20] Available at: https://urn.nsk.hr/urn:nbn:hr:235:570063

M. Buntić, "Simulacija pročišćavanja ispušnih plinova u trokomponentnom katalizatoru Ottoovog motora", Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, 2019. Available at: https://urn.nsk.hr/urn:nbn:hr:235:570063

Metadata
TitleSimulacija pročišćavanja ispušnih plinova u trokomponentnom katalizatoru Ottoovog motora
Title (english)Simulation of the exhaust gas after-treatment in a three-way catalyst of a spark ignited engine
AuthorMatej Buntić
MentorDarko Kozarac (mentor)
GranterUniversity of Zagreb
Faculty of Mechanical Engineering and Naval Architecture
Zagreb
Defense date and country2019-01-25, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Mechanical Engineering
General Mechanical Engineering (Construction)
Abstract
Kako bi pratili sve strože standarde na emisiju štetnih plinova, proizvođači se susreću sa sve većim preprekama pri razvoju sustava za obradu ispušnih plinova. U tom procesu pomaže im korištenje simulacijskih programa zbog manjeg financijskog i vremenskog troška, no postavlja se pitanje točnosti istih. U tu svrhu, za ovaj rad napravljeno je eksperimentalno mjerenje štetne emisije vozila pogonjenog nenabijenim motorom s vanjskim izvorom paljenja opremljenog s trokomponentnim katalizatorom pri brzinama vrtnje od 1500, 2500 i 3500 min-1 i različitim opterećenjima. Mjerni uzorci su uzeti prije te nakon katalitičke obrade ispušnih plinova, a izmjereni su količinski udjeli kisika (O2), ugljikovog dioksida (CO2), ugljikovog monoksida (CO), ugljikovodika (HC) te faktor pretička zraka (λ). Zatim je u svrhu dobivanja vanjskih uvjeta obrade ispušnih plinova napravljen simulacijski model motora vozila validiran na najveću efektivnu snagu vozila u programskom paketu AVL Boost. Naposljetku, u istom programskom paketu, napravljen je model trokomponentnog katalizatora s nekoliko inačica koje uključuju različite kemijske reakcije oksidacije i redukcije ispušnih plinova te reakcije punjenja i pražnjenja površine međusloja koja sadrži rodij, barijev karbonat i cerijev (III) oksid.
Abstract (english)
Car manufacturers are facing ever-growing obstacles when developing gas exhaust aftertreatment systems in order to meet stringent emission standards. Manufacturers use simulation software in the process to decrease both financial and time costs. By doing so, the question of precision of such software emerges. To better understand the result of using such software, experimental measurement of pollutant emission was conducted on a car driven by a normally aspirated spark ignition engine and equipped with a three-way catalyst system. The pollutant emissions were measured for engine speeds of 1500, 2500 and 3500 rpm and different engine loads. Samples were collected both before and after the catalytic conversion. The results uncovered mole fractions of oxygen (O2), carbon monoxide (CO), carbon dioxide (CO2), hydrocarbons (HC), and air-fuel ratio were measured. Afterwards, a simulation model of the car's engine was made and validated by maximum power in the simulation software, AVL Boost, in order to gain aftertreatment boundary conditions. Lastly, an aftertreatment simulation model of a three-way catalyst with several versions including different chemical reactions of oxidation and reduction of exhaust gases and reactions of oxidation and reduction of cerium, rhodium, and barium on the washcoat surface was made in the same software.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:235:570063
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 23:43:15