Ispitivanje fizikalno-kemijskih svojstava rabljenog motornog ulja

master's thesis

• Title (english): Investigation of Physico-Chemical Properties of Used Motor Oils
• Author: Ivan Pavić
• Mentor: Tatjana Gazivoda Kraljević (mentor)
• Mentor: Valentina Ključarić (komentor)
• Committee member: Tatjana Gazivoda Kraljević (predsjednik povjerenstva)
• Committee member: Valentina Ključarić (član povjerenstva)
• Granter: University of Zagreb; (Croatian Defence Academy "Dr. Franjo Tuđman"); Zagreb
• Defense date and country: 2022-07-15, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Interdisciplinary Technical Sciences

Abstract

U okviru diplomskog rada ispitana su fizikalno-kemijska svojstva rabljenog motornog
ulja iz različitih vozila tipa MRAP nakon određenog broja prijeđenih kilometara u određenom
vremenskom periodu nakon zadnje izmjene ulja. Određena je kinematička viskoznost,
temperatura plamišta, količina vode u uzorcima rabljenog motornog ulja te njihov kemijski
sastav FTIR spektroskopijom i rendgenskom difrakcijom. Dobiveni rezultati uspoređivani su s
vrijednostima dobivenima za uzorak nekorištenog ulja INA Super Turbo SAE 15W-40. Svojstva
rabljenih mazivih ulja su određena sukladno normiranim metodama temeljenih na
EN/ISO/ASTM postupcima uključujući standardnu metodu za točku plamišta ASTM D92-05,
standardnu metodu za kinematičku viskoznost ASTM D445 i standardne metode za kemijski
sastav ASTM D1744-92 (Karl-Fischer), ASTM E2412 (FTIR spektroskopija) i ASTM D 6443-
04 (rendgenska difrakcija). Na temelju dobivenih rezultata može se zaključiti da ispitani uzorci
rabljenih motornih ulja u ovisnosti o vremenu eksploatacije u motornim vozilima tipa MRAP
zadovoljavaju propisane kriterije.

Abstract (english)

As part of the thesis, the physico-chemical properties of used engine oil from different MRAP
vehicles were examined after a certain number of kilometers traveled in a certain period of time
after the last oil change. Kinematic viscosity, flashpoint temperature, amount of water in used
motor oil samples and their chemical composition were determined by FTIR spectroscopy and
X-ray diffraction. The obtained results were compared with the values obtained for a sample of
unused INA Super Turbo SAE 15W-40 oil. The properties of used lubricating oils are
determined according to standardized methods based on EN/ISO/ASTM procedures, including
the standard method for flash point ASTM D92-05, the standard method for kinematic viscosity
ASTM D445 and the standard method for chemical composition ASTM D1744-92 (KarlFischer). , ASTM E2412 (FTIR spectroscopy) and ASTM D 6443-04 (X-ray diffraction). Based
on the obtained results, it can be concluded that the tested samples of used motor oils meet the
prescribed criteria depending on the time of exploitation in MRAP vehicles.

• Keywords: rabljeno motorno ulje; kinematička viskoznost; točka plamišta; Karl-Fischer; FTIR spektroskopija; rendgenska difrakcija
• Keywords (english): used motor oil; kinematic viscosity; flash point; Karl-Fischer; FTIR spectroscopy; Xray diffraction
• Language: croatian
• URN:NBN: urn:nbn:hr:249:668793
• Study programme: Title: Military Engineering; Study programme type: university; Study level: graduate; Academic / professional title: MAGISTAR/MAGISTRA INŽENJER/INŽENJERKA VOJNOG INŽENJERSTVA (MAGISTAR/MAGISTRA INŽENJER/INŽENJERKA VOJNOG INŽENJERSTVA)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Closed access
• Created on: 2023-02-06 14:33:52