THE ANALYSIS OF CHANGES IN TOTAL BASE NUMBER AND THE FLASH POINT IN THE EXPLOITED ENGINE OIL

2015 ◽  
Vol 19 (3) ◽  
pp. 395-398
Author(s):  
Grzegorz Sikora ◽  
Hanna Miller
Keyword(s):  
Flash Point ◽  
Engine Oil ◽  
Base Number ◽  
Total Base

Comparing oil condition in diesel and gasoline engines

2020 ◽  
Vol 72 (8) ◽  
pp. 1033-1039
Author(s):  
Adam Agocs ◽  
Serhiy Budnyk ◽  
Marcella Frauscher ◽  
Bettina Ronai ◽  
Charlotte Besser ◽  
...  
Keyword(s):  
Design Methodology ◽  
Engine Oil ◽  
Base Number ◽  
Oil Degradation ◽  
Special Issue ◽  
Maintenance Strategies ◽  
Content Type ◽  
Gasoline Engines ◽  
Total Base ◽  
New Generation

Purpose This paper aims to compare the conditions of in-service oils from diesel and gasoline engines, with focus on nitration. Design/methodology/approach Oil conditions of seven engine oil samples from five diesel-fueled vehicles and nine oil samples from eight gasoline-fueled vehicles with total mileage ranging from 13,600 to 30,000 km were determined via Fourier-transform infrared spectroscopy as well as neutralization number (NN) and total base number titration. Findings Chemical deterioration was characterized by significant differences in oxidation, nitration, NN increase and residual aminic antioxidant contents. Social implications Submitted in connection with the Special Issue, “Young Tribologists – Insights into the work of the new generation”. Originality/value Uncovering differences in the oil degradation of oils from gasoline and diesel engines enables improved condition-based maintenance strategies and the prediction of oil condition dependent tribological performance.

scholarly journals Absorption Wavebands for Discriminating Oxidation Time of Engine Oil as Detected by FT-IR Spectroscopy

Lubricants ◽  
2019 ◽  
Vol 7 (3) ◽  
pp. 24 ◽  
Author(s):  
Ali Abdul-Munaim ◽  
Torrey Holland ◽  
Poopalasingam Sivakumar ◽  
Dennis Watson
Keyword(s):  
Ir Spectroscopy ◽  
Gasoline Engine ◽  
Oxidation Process ◽  
Oxidation Time ◽  
Engine Oil ◽  
Base Number ◽  
Total Base ◽  
Ft Ir ◽  
Thermal Oxidation Process ◽  
Ft Ir Spectroscopy

Fourier Transform-Infrared (FT-IR) spectroscopy was used to analyze gasoline engine oil (SAE 5W20) samples that were exposed to seven different oxidation times (0 h, 24 h, 48 h, 72 h, 96 h, 120 h, and 144 h) to determine the best wavenumbers and wavenumber ranges for the discrimination of the oxidation times. The thermal oxidation process generated oil samples with varying total base number (TBN) levels. Each wavenumber (400–3900 cm−1) and wavenumber ranges identified from the literature and this study were statistically analyzed to determine which wavenumbers and wavenumber ranges could discriminate among all oxidation times. Linear regression was used with the best wavenumbers and wavenumber ranges to predict oxidation time.

scholarly journals UV-Visible Spectrophotometer for Distinguishing Oxidation Time of Engine Oil

Lubricants ◽  
2021 ◽  
Vol 9 (4) ◽  
pp. 37
Author(s):  
Torrey Holland ◽  
Ali Mazin Abdul-Munaim ◽  
Christopher Mandrell ◽  
Robinson Karunanithy ◽  
Dennis G. Watson ◽  
...  
Keyword(s):  
Linear Regression ◽  
Thermal Oxidation ◽  
Gasoline Engine ◽  
Oxidation Time ◽  
Engine Oil ◽  
Base Number ◽  
Total Base ◽  
Uv Visible

Samples of gasoline engine oil (SAE 5W20) that had been exposed to various oxidation times were inspected with a UV-Visible (UV-Vis) spectrophotometer to select the best wavelengths and wavelength ranges for distinguishing oxidation times. Engine oil samples were subjected to different thermal oxidation periods of 0, 24, 48, 72, 96, 120, and 144 hours, resulting in a range of total base number (TBN) levels. Each wavelength (190.5–849.5 nm) and selected wavelength ranges were evaluated to determine the wavelength or wavelength ranges that could best distinguish among all oxidation times. The best wavelengths and wavelength ranges were analyzed with linear regression to determine the best wavelength or range to predict oxidation time.

scholarly journals Artificial Aging Experiments of Neat and Contaminated Engine Oil Samples

Lubricants ◽  
2021 ◽  
Vol 9 (6) ◽  
pp. 63
Author(s):  
András Lajos Nagy ◽  
Jan Rohde-Brandenburger ◽  
Ibolya Zsoldos
Keyword(s):  
Kinematic Viscosity ◽  
Artificial Aging ◽  
Air Flow ◽  
Real Life ◽  
Chemical Properties ◽  
Sample Volume ◽  
Engine Oil ◽  
Base Number ◽  
Total Base ◽  
Physical And Chemical

This study highlights how the results from an artificial engine oil aging method compare to used engine oil samples collected from a vehicle fleet. Additionally, this paper presents the effect of contaminating the oil during aging with synthetic fuel alternatives on the physical and chemical properties of artificially aged engine oil samples. A laboratory-scale artificial thermo-oxidative aging experiment was conducted on multiple samples of commercially available formulated fully-synthetic SAE 0W-30 engine oil. The goal of the experiment was to establish the validity of the artificially aged samples as well as the validity of the underlying process in reproducibly fabricating small batches of aged engine oil with comparable chemical and physical properties to real-life used oils. Eight samples were subjected to distinct load cases (temperature, air flow rate, sample volume and aging time). Six additional samples were subjected to an intermediate load case, with five of them contaminated with selected conventional fuels and novel automotive fuel candidates. Conventional oil analysis was conducted on each sample to determine oxidation, residual additive content, kinematic viscosity and total base number. Additionally, analysis results were compared to in-use engine oil samples through PCA. The resulting oil condition after aging is in accordance with independently published results in terms of zinc dialkyldithiophosphate content and kinematic viscosity. Contaminated aging with OME 3-5 resulted in a drop in antioxidant content and elevated kinematic viscosity. Based on the comparison with in-use samples, artificial aging of 200 mL engine oil at 180 °C with 1 L/min air flow for 96 h can produce similar oil conditions as mixed vehicle use for 7000 km.

Improving Engine Oil Properties by Dispersion of hBN/Al2O3 Nanoparticles

2014 ◽  
Vol 607 ◽  
pp. 70-73 ◽  
Author(s):  
Muhammad Ilman Hakimi Chua Abdullah ◽  
Mohd Fadzli bin Abdollah ◽  
Hilmi Amiruddin ◽  
Noreffendy Tamaldin ◽  
Nur Rashid Mat Nuri ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Viscosity Index ◽  
Acid Number ◽  
Engine Oil ◽  
Base Number ◽  
Total Acid ◽  
Oil Performance ◽  
Total Base ◽  
Sonication Technique ◽  
Lubrication Properties

This paper provides oil properties study of conventional diesel engine oil enriched with hBN/Al2O3 nanoparticles. In this study, an optimal composition (0.5 vol.%) of hBN and Al2O3 nanoparticles separately dispersed in SAE 15W40 diesel engine oil by sonication technique. The oil properties were studied by measuring the Viscosity Index (VI), Total Acid Number (TAN), Total Base Number (TBN) and flash point temperature. The results reveal that the nano-oil with hBN nanoparticles could improves or at least maintain the key lubrication properties, though the TAN value is slightly increased. The results presented here may facilitate improvements in the conventional diesel engine oil performance.

scholarly journals Rapid Fleet Condition Analysis through Correlating Basic Vehicle Tracking Data with Engine Oil FT-IR Spectra

Lubricants ◽  
2021 ◽  
Vol 9 (12) ◽  
pp. 114
Author(s):  
András Lajos Nagy ◽  
Adam Agocs ◽  
Bettina Ronai ◽  
Péter Raffai ◽  
Jan Rohde-Brandenburger ◽  
...  
Keyword(s):  
Combustion Engine ◽  
Acid Number ◽  
Chemical Degradation ◽  
Engine Oil ◽  
Base Number ◽  
Total Acid ◽  
Fourier Transformed Infrared Spectroscopy ◽  
Total Base ◽  
Ft Ir ◽  
Cost Efficient

Engine oil condition and tribological performance are strongly interrelated. Accordingly, oil condition monitoring is common in various applications. This is especially important, as oil condition depends on the fueling and utilization profile of an internal combustion engine. Common practice involves the measurement of various parameters, such as the total acid number and total base number, oxidation, nitration, viscosity, and elemental composition; thus, it can be time-consuming and resource-intensive. This study provides a methodology for rapid analysis for large vehicle fleets or sample sizes, using only Fourier-transformed infrared spectroscopy and the subsequent multivariate data analysis offers a rapid alternative to commonly available methods. The described method provides a rapid, cost-efficient, and intuitive approach to uncovering differences in the oil condition. Furthermore, understanding the underlying reasons in engine construction and the resulting chemical degradation is also possible.

scholarly journals Investigation of Used Engine Oil Lubricating Performance Through Oil Analysis and Friction and Wear Measurements

2019 ◽  
Author(s):  
András Lajos Nagy ◽  
Jan Christopher Knaup ◽  
Ibolya Zsoldos
Keyword(s):  
Service Life ◽  
Friction And Wear ◽  
Boron Content ◽  
Direct Injection ◽  
Acid Number ◽  
Engine Oil ◽  
Base Number ◽  
Total Acid ◽  
Engine Operation ◽  
Total Base

Engine oil degradation during long-term engine operation is a well-researched topic, however, the effect of biofuels and synthetic compounds is not fully understood. In order to characterise novel fuel related phenomena in an engine a basis of studies should be established with state-of-the-art engines and conventional fuels and lubricants. This study aims at describing the behaviour of used engine oils throughout their service life based on friction and wear measurements with oil samples from three identical light-duty direct injection supercharged diesel engines. Oil samples were taken from each engine every 50 hours between oil changes to determine physical properties and chemical composition. Friction and wear measurements were conducted on a high-frequency reciprocating rig. The results show strong correlation between oil service life and boron content, as well as acid number and base number. A similar correlation between coefficient of friction with used samples and boron content as well as soot content was observed. A simple model based on a polynomial fitting function was proposed to predict friction and wear from boron content, total acid number and total base number.

scholarly journals Synthesis of 1,4-Dioxaspiro[4.4] and 1,4-Dioxaspiro[4.5] Novel Compounds from Oleic Acid as Potential Biolubricant

2017 ◽  
Vol 17 (2) ◽  
pp. 301
Author(s):  
Yehezkiel Steven Kurniawan ◽  
Yudha Ramanda ◽  
Kevin Thomas ◽  
Hendra Hendra ◽  
Tutik Dwi Wahyuningsih
Keyword(s):  
Oleic Acid ◽  
Viscous Liquid ◽  
Acid Number ◽  
The Other ◽  
Esterification Reaction ◽  
Base Number ◽  
Sonochemical Method ◽  
Total Acid ◽  
Hydroxylation Reaction ◽  
Total Base

Two 1,4-dioxaspiro novel compounds which derivated from methyl 9,10-dihydroxyoctadecanoate (MDHO) with cyclopentanone and cyclohexanone had been synthesized by a sonochemical method in the presence of montmorillonite KSF catalyst. The MDHO compound had been prepared from 9,10-dihydroxyoctadecanoic acid (DHOA) and methanol. Meanwhile, DHOA was synthesized by hydroxylation of oleic acid with the solution of 1% KMnO4 under basic condition. The structures of the products were confirmed by FTIR, GC-MS, 1H-NMR, and 13C-NMR spectrometers. Hydroxylation reaction of oleic acid gave DHOA as a white solid powder in 46.52% yield (m.p. 131-132 °C). On the other side, esterification reaction via sonochemical method between DHOA and methanol gave MDHO as a white powder in 93.80% yield (m.p. 80-81 °C). The use of cyclopentanone in 45 min sonochemical method gave methyl 8-(3-octyl-1,4-dioxaspiro[4.4]nonan-2-yl)octanoate as a yellow viscous liquid in 50.51% yield. The other compound, methyl 8-(3-octyl-1,4-dioxaspiro[4.5]decan-2-yl)octanoate as yellow viscous liquid had been synthesized by similar method with cyclohexanone via the sonochemical method in 45.12% yield. From physicochemical properties, i.e. density, total acid number, total base number, and iodine value, gave the conclusion that these novel compounds are potential biolubricant candidates to be developed.

Sign in / Sign up

Export Citation Format

Share Document