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Evaluation and optimization of cation exchanging materials for life-span optimization of engine oil
Linköping University, Department of Physics, Chemistry and Biology. Linköping University, The Institute of Technology.
2013 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

Requirements of high performing engine oil are today necessary since the development of new machinery with modern standardsis a cutting edge technology demanding highly optimized components. One way of increasing the lubricating properties of engineoil is through the addition of antioxidants. Antioxidants included in lubricants have a number of functions, one being buffering theinorganic acids sulphuric acid and nitric acid.A novel method expected to lower the hydrogen ion concentration in acidified engine oil was evaluated in this thesis. Thecapability of four different types of cation exchangers to serve as complements for buffering additives in heavy vehicle engineswas assessed. Two cation exchangers were weak and two were strong. The analysis techniques used to evaluate what effect thecation exchangers have on engine oil were standard test method ASTM D4739, for measurements of the total base number (TBN),and inductively coupled plasma – atomic emission spectroscopy (ICP-AES). With ASTM D4739 it was found that weak cationexchangers give positive results with respect to the ability to decrease the hydrogen ion concentration in acidified engine oil.However, after begin subjected to strong cation exchangers, ASTM D4739 indicated that the hydrogen ion concentration in theacidified engine oil remains the same or increases.With additional literature studies of a variety of cation exchangers currently on the market, further optimization of the cationexchanging material could likely be achieved. In addition, the preparation method used during the evaluation of the cationexchangers should be optimized to give more reliable results.

Place, publisher, year, edition, pages
2013. , 65 p.
Keyword [en]
cation exchanger, buffering additive, engine oil, total base number, pIH method, inductively coupled plasma atomic emission spectroscopy
National Category
Chemical Engineering
Identifiers
URN: urn:nbn:se:liu:diva-98986ISRN: LITH-IFM-A-EX-13/2745–SEOAI: oai:DiVA.org:liu-98986DiVA: diva2:656051
External cooperation
Scania AB
Subject / course
Chemistry
Presentation
2013-06-12, Mott, Linköping, 10:15 (Swedish)
Supervisors
Examiners
Available from: 2013-10-18 Created: 2013-10-14 Last updated: 2013-10-18Bibliographically approved

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Evaluation and optimization of cation exchanging materials for life-span optimization of engine oil(1725 kB)187 downloads
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CiteExportLink to record
Permanent link

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Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf