Testing Engine Oil Specifications and Properties and its Effects on the Engines Maintenance and Performance (original) (raw)
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Results of Experimental Research Physical-Chemical Characteristics Oil from Engines of Vehicles
Proceedings on Engineering Sciences
In the study of ways to reduce the friction losses of internal combustion (IC) engines, investigations of losses from elements in the piston assembly, the bearing system, and the valve train system are paramount. Mechanical and thermodynamic losses, wear and the emissions caused by lubricating oil combustion are principally influenced by the tribological behaviour of the piston assembly. The tribological performance of piston rings in reciprocating IC engines can only be fully understood when both lubrication and wear are considered in combination. This paper deals with physical-chemical tests that are part of the oil analysis and are used to access the condition of the system. Furthermore, the results of experimental research on the physical-chemical properties of the oil sampled from engines of the vehicles are shown.
Optimization of Different Grades Engine Oil Viscosity
Mechanical engine is a complexmachine; it consists of a hundreds of moving parts. The parts of the mechanical engine are operated under a wide temperature ranges and pressure. Engine oil is used in all machines to reduce friction and control wear, so oil conditions and specifications controls the friction any wear behavior in any engine, viscosity is one of oil specifications, it shows the amount of forces between oil particles. A complete simulation of engine oil according to its viscosity is done in this study, through the experiment data a mathematical formulas for different engine oils grades are created. Engine oils 10W-40, 5W-30, and 20W-50 are selected for testing and simulation because these types are widely used in Kuwait market for engines. The SVM 3000 viscosity measuring unit is used to measure viscosity and density of engine oils 10W-40, 5W-30, and 20W-50, optimization techniques in MATLAB software are used so the minimum values of viscosity are created.
OIL ANALYSIS OF INTERNAL COMBUSTION ENGINEE
All engines must be lubricated in order to preserve the integrity of the system for its designated lifetime. The extreme temperatures in internal combustion engines make lubrication complex. The lubricants that are suitable for use in these engines are expected to reduce friction, dissipate heat from internal parts, minimize deposit formation, and prevent corrosion and wear. Its main function is to reduce friction by forming a film between two moving surfaces. The strength and durability of this film is related to the viscosity of the lubrication and to the speed and load experienced by the moving surfaces. Analyzing the lubricant of an internal combustion engine one can foresee what is happening inside it. For instance, wear between the valve and seat is thought to occur primarily due to relative motion when the valve is seated, due to cylinder pressure that forces the valve into the seat, causing slight deflections of both valve and seat. In order to study the predictive maintenance in an internal combustion engine, through wear particle oil analysis, it was constructed two tests rig composed by an engine coupled to a reducer. This work presents some results in the test rigs working with different lubricant. For analysis it was used analytical ferrography, viscosity measurement, TBN, spectrometry and magnetic particle quantifier. The result showed good agreement with the observed after disassembling the motors.
Study on lubricant quality and its effect on engine component performance
Industrial Lubrication and Tribology, 2008
PurposeThis paper aims to determine the usage time of the test lubricant N0, prepared from base oils of Aliaga Plant, Izmir, in gasoline and diesel‐engines, and the investigations of high‐temperature oxidation, engine‐protective properties, and property changes of the lubricant in performance time.Design/methodology/approachPhysical and chemical properties of the lubricating oil were initially established, and the oil was then subjected to Petter W‐1 gasoline and Petter AV‐1 diesel test engines. Dismantling of the engine parts was followed by the examination of pistons, piston rings and bearings, and analysis of the lubricant was also undertaken. The engine performance test results and the quality control of the lubricating oil assessments were evaluated according to the International Engine Lubricant Specifications.FindingsThe lubricating oil, under sluggish experimental conditions, appears to meet a 40‐hour test in gasoline engines and a 120‐hour test in diesel engines with the sp...
Kurdistan Journal of Applied Research, 2021
Fresh engine oils or engine lubricants lose some of their properties during service, engine lubricant deterioration leads to change in oil properties, which ultimately have effect on engine overall performance. Therefore, it is very important to characterize used engine lubricants at different using conditions to check the performance and ability of existing oils, which in turn protects engine parts and also designs new formulations to produce better type of engine oil or improve the existing oil. Therefore, optimizing engine oil lubricant changing time is very important for reducing environmental impact but renewing engine lubricant before it is due rises a customer’s cost. In this study, the most significant parameters such as kinematic viscosity, flash point and fire point were chosen to determine the changes and deterioration in engine oil properties. The oil samples were multigrade fully synthetic with SAE gradation 10W-30 grand ecodrive is used in 5 different passenger cars. ...
Determination of engine oil characteristics
IOP Conference Series: Materials Science and Engineering, 2020
The given introduced paper deals with determination of contamination, content of elements, change of composition and stability against the oxidation of motor oils. This work is aimed at chaining the individual properties of engine oil in dependence on the use of oil in traffic. Results show, that properties of engine oils do not depend only on the time of use but they also depend on other factors, such as state of the vehicle, the way of driving the vehicle, and the condition of maitenance.
Thermo-physical properties of selected oil samples as predictor of marine engines life span
IOSR Journal of Applied Physics, 2013
The break down of hydrodynamic regime of lubricants especially at higher operating temperature promotes direct metal-to-metal contact between surfaces. This often results in wear and tear, overheating and fatigue on the sliding surfaces of engines. This paper determines the actual viscosities of six oil samples (Mobil oil, Abro oil, Con oil, Tonimas oil, Oando oil and Total oil) using their coefficient of viscosities and specific heat capacities obtained in the laboratory. The results indicate that Mobil oil is the most appropriate for oil marine engines; closely followed by Tonimas oil, and Total oil. The results also reveal that Con Oil, Oando Oil and Abro Oil have low viscosities at higher temperatures. This thermo-physical property may render these oils very unstable for marine engines, especially for international voyage.
Lubricants, 2018
To further improve efficiency in automotive engine systems, it is important to understand the generation of friction in its components. Accurate simulation and modeling of friction in machine components is, amongst other things, dependent on realistic lubricant rheology and lubricant properties, where especially the latter may change as the machine ages. Some results of research under laboratory conditions on the aging of engine commercial oils with different performance levels (mineral SAE 30, synthetic SAE10W-40, and bio-based) are presented in this paper. The key role of the action of pressure and temperature in engine oils' aging is described. The paper includes the results of experiments over time in laboratory testing of a single cylinder motorbike. The aging of engine oil causes changes to its dynamic viscosity value. The aim of this work is to evaluate changes due to temperature and pressure in viscosity of engine oil over its lifetime and to perform uncertainty analysis of the measured values. The results are presented as the characteristics of viscosity and time in various temperatures and the shear rates/pressures. This paper also includes a Computational Fluid Dynamics (CFD) model, applying the experimental results in the piston ring tribology problem.