Degradation and chemical change of longlife oils following intensive use in automobile engines

Konečný, Branislav; Král, Jan; Madáč, Kamil; Fedorko, Gabriel; Molnár, Viktor

doi:10.1016/j.measurement.2013.12.034

Cited by 54 publications

(39 citation statements)

References 19 publications

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“…When compared to TBN decrease of R-1 and NP-3, we found that TBN change in the R-1 oil was 9.7 per cent (new oil ϭ 7.93 mgKOH/g, 100 hours used oil ϭ 7.16 mgKOH/g), and TBN change for the NP-3 oil was 67 per cent (New oil ϭ 9.77 mgKOH/g, 100 hours used oil ϭ 3.25 mgKOH/g). These results indicated that the NP-3 oil should be changed at the end of the 50 hours because of the TBN decrease which exceeded the oil change limit value of 30 per cent (Kral et al, 2014). Therefore, boron and nitrogen in the NP-3 oil were not as effective as ZDDP in providing the antioxidation resistance.…”

Section: Discussionmentioning

confidence: 94%

Comparison of tribological performances of sulfur based and boron succuminide containing antiwear additive with ZDDP by engine bench tests

Özkan

Yağcı

Birer

et al. 2016

ILT

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Article information:To cite this document: Doğuş Özkan M. Barış Yağci Özgür Birer Hakan Kaleli , (2016),"Comparison of tribological performances of sulfur based and boron succuminide containing antiwear additive with ZDDP by engine bench tests", Industrial Lubrication and Tribology, Vol. 68 Iss 4 pp. 482 -496 Permanent link to this document: http://dx. Users who downloaded this article also downloaded:(2016),"Effect of hexagonal boron nitride nanoparticles as an additive on the extreme pressure properties of engine oil", Industrial Lubrication and Tribology, Vol. 68 Iss 4 pp. 441-445 http://dx.(2016),"Sliding wear behavior of magnetron sputtered chromium carbide thin films", Industrial Lubrication and Tribology, Vol. 68 Iss 4 pp. 452-457 http://dx.Access to this document was granted through an Emerald subscription provided by emerald-srm:172635 [] For AuthorsIf you would like to write for this, or any other Emerald publication, then please use our Emerald for Authors service information about how to choose which publication to write for and submission guidelines are available for all. Please visit www.emeraldinsight.com/authors for more information. About Emerald www.emeraldinsight.comEmerald is a global publisher linking research and practice to the benefit of society. The company manages a portfolio of more than 290 journals and over 2,350 books and book series volumes, as well as providing an extensive range of online products and additional customer resources and services.Emerald is both COUNTER 4 and TRANSFER compliant. The organization is a partner of the Committee on Publication Ethics (COPE) and also works with Portico and the LOCKSS initiative for digital archive preservation. AbstractPurpose -This study aims to evaluate and compare by 100 hours engine bench tests the tribological performances of two types of lubrication oils, which were sulfur-based, boron succinimide-containing antiwear package (NP-3) oil and conventional zinc dialkyldithiophosphate (ZDDP)-containing (R-1) oil. Design/methodology/approach -The tribological performances of the oils were evaluated in three main contexts, including engine tests, physical/chemical changes and surface analysis. Findings -Results showed that NP-3 lubrication oil, which was environment-and catalyst-friendly, can be an alternative lubrication oil with its tribological performance due to similar antiwear characteristics with the ZDDP. Originality/value -Attempts to develop catalysis-and environment-friendly antiwear additive packages have not presented popular or commonly used ZDDP-free products for the vehicle industry. This study presents tribological characterization of a newly developed ZDDP-free lubricating oil by engine bench tests. AbbreviationsNP3 ϭ non phosphorus R1ϭ Phosphorus containing SEM ϭ Scanning Electron Microscope EDX ϭ Energy dispersive X-ray spectroscopy XPS ϭ X-ray photoelectron spectroscopy ZDDP ϭ Zinc dialkyldithiophosphates Nomenclature and units m ϭ Micro meter kW ϭ kilo watts mm ϭ Millimetres ppm ϭ Part per millionThe current issue and...

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Section: Discussionmentioning

confidence: 94%

Comparison of tribological performances of sulfur based and boron succuminide containing antiwear additive with ZDDP by engine bench tests

Özkan

Yağcı

Birer

et al. 2016

ILT

View full text Add to dashboard Cite

show abstract

“…In the first step of modeling the changes in kinematic viscosity at 100°C the acceptable limit value was determined [9,12], then on the basis of collected empirical material the visual assessment of the relationships between the mileage and the changes in the oil properties was performed for every oil type. It was assumed that the linear relationship was adequate.…”

Section: Modeling Changes In the Parameter Values Of Engine Oilsmentioning

confidence: 99%

The kinetics of changes in kinematic viscosity of engine oils under similar operating conditions

Wolak¹,

Zając²

2017

EiN

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“…An efficient oil analysis programme is often based on an off-line oil analysis, performed in laboratories where all oil properties are analysed. Among the most basic observed parameters of the engine oils that have a direct relation with their performance and therefore also with their change interval, we can include viscosity, viscosity index (VI), total base number (TBN) (Král et al, 2014;Mihalčová and Al Hakim, 2008) and a total acid number. For purposes of evaluation of quality parameters of the lubricant being used, analysts use instrumental methods such as infrared spectrometry with Fourier transformation (FTIR spectrometry) (Caneca e al., 2006;Sejkorová, 2013;Trčka et al, 2015;Al-Ghouti et al, 2010;Hnilicová et al, 2016;Marinović et al, 2012;Van De Voort et al, 2006) and electrochemical methods (Tomášková et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

“…Motor oil ("long-life" oil) change intervals for those cars are somewhere between 30,000 and 50,000 km. Král et al (2014) tested long-life motor oils if they were used in unfavorable or difficult conditions. Aldajah et al (2007) studied an effect of exhaust gas recirculation (EGR) contamination of diesel engine oil on wear.…”

Section: Introductionmentioning

confidence: 99%

Definition of a Motor Oil Change Interval for High-Volume Diesel Engines Based on its Current Characteristics Assessment

Sejkorová¹,

Hurtová²,

Glos³

et al. 2017

Acta Univ. Agric. Silvic. Mendelianae Brun.

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Evaluation of motor oils is given a big attention due to a fact that during the years it was proven that lubrication is a key factor influencing a service life of vehicles and industrial engines. Motor oil must fully serve in various operational conditions (such as city traffic with frequent braking and acceleration) as well as in different climatic conditions (arctic winters or tropical summer heat). Therefore, the change of the motor oil should be optimized in order to ensure proper engine efficiency and extend its service life. The article presents result of testing of two types of used motor oils with the same specification ACEA E4/E7, SAE 10W-40, from two different suppliers. These oils were used in a high-volume diesel engine of IVECO CITY BUS. The sales representatives recently offered a more expensive motor oil (in the text marked oil B) claimed that in their oil can extend the change interval from 40,000 km to 80,000 km. Evaluation of selected parameters did not prove that after exceeding of change interval 40,000 km, the more expensive motor oil would ensure all required functions as it had been declared by the supplier's sales representative.

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Degradation and chemical change of longlife oils following intensive use in automobile engines

Cited by 54 publications

References 19 publications

Comparison of tribological performances of sulfur based and boron succuminide containing antiwear additive with ZDDP by engine bench tests

Comparison of tribological performances of sulfur based and boron succuminide containing antiwear additive with ZDDP by engine bench tests

The kinetics of changes in kinematic viscosity of engine oils under similar operating conditions

Definition of a Motor Oil Change Interval for High-Volume Diesel Engines Based on its Current Characteristics Assessment

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