Presumption of the wear amount by real time measurments of wear particles in lubricating oil

2003 ◽  
Vol 2003.4 (0) ◽  
pp. 211-212 ◽  
Author(s):  
Masami HIGASHI ◽  
Tomomi HONDA ◽  
Yoshiro IWAI
Keyword(s):  
Real Time ◽  
Lubricating Oil ◽  
Wear Particles

Dissolved Wear Metal Monitoring in Lubricating Fluids

2007 ◽  
Author(s):  
Fred M. Discenzo ◽  
Steven A. Kania ◽  
Chung-Chin Liu ◽  
Laurie Dudik ◽  
Aleksandr Vasser ◽  
...  
Keyword(s):  
Metal Ions ◽  
Real Time ◽  
Electrochemical Cell ◽  
Critical Role ◽  
Ionic Species ◽  
Lubricating Oil ◽  
Wear Particles ◽  
Operating Characteristics ◽  
Metal Wear ◽  
Metal Monitoring

Lubricating fluids play a critical role in the operation of many machines in commerce, industry, and the military. Failure of a lubricant often results in accelerated metal wear and the release of wear debris in the lubricant. Early detection of abnormal metal wear is important for fault detection and failure prevention. An electrochemical cell can be operated in a lubricating fluid in such a way that the operating characteristics of the cell can provide an indication of the chemistry of the fluid. For example, certain ions in the fluid, such as wear metal ions, will react to particular potential values applied to electrodes in the electrochemical cell. By applying a changing potential across the electrodes in an electrochemical cell and observing the resulting current it is possible to detect and identify the ionic species present in the lubricating fluid. The objective is to provide real-time monitoring of lubricating fluids using an in situ sensor to detect and diagnose conditions leading to machinery failure. A series of experiments have been conducted to confirm the ability of an electrochemical cell to detect wear metal ions in lubricating fluids extracted from machinery. Additional tests have been conducted to test the hypothesis that the presence and amount of wear metal ions corresponds to the type and amount of wear particles in the fluid. Initial laboratory tests have established a positive correlation with wear particles detected in used lubricating oil with ion presence determined using ion chromatography. The results reported indicate that a small, real-time multielement sensor with an electrochemical cell will be able to detect wear metal ions and provide an early indication of unusual material wear. This capability may provide an early warning of atypical wear patterns and provide a cue to an operator or service engineer indicating the type of fault occurring and the specific component experiencing wear or early failure.

An Accelerated Testing Approach for Lubricant Oil Consumption Reduction on an EMD 710 Diesel Engine

2010 ◽  
Author(s):  
Kent Froelund ◽  
Steve Fritz ◽  
John Hedrick ◽  
Jaime Garcia ◽  
Neil Blythe
Keyword(s):  
Steady State ◽  
Diesel Engine ◽  
Real Time ◽  
Measurement Technique ◽  
Consumption Rate ◽  
Operating Conditions ◽  
Lubricating Oil ◽  
Oil Consumption ◽  
Ultra Low Sulfur Diesel ◽  
Lubricant Oil

Real-Time Da Vinci Lubricant Oil Consumption (DALOC™) measurements were made on a 2,942 kW (4,000 hp) EMD 16-710G3 locomotive diesel engine, as part of a program to evaluate prototype cylinder kits that hold the potential to reduce lubricating oil consumption and hence reduce exhaust particulate matter emissions towards meeting EPA Tier 0+ locomotive emissions certification. The DALOC technique uses sulfur dioxide (SO2) measured in the exhaust gas stream as a tracer for oil consumption. The engine was operated on an ultra-low sulfur diesel fuel (3 ppm by weight) and commercially available SAE grade 20W40 mineral-based lubricating oil (4,865 ppm by weight). Knowing the SO2 concentration in the exhaust, the air and fuel flow rates, and the lubricating oil consumption rate can be calculated in real-time, i.e. on a second-to-second basis. Use of this measurement technique on the locomotive engine application has proven to be a cost- and time-reducing tool for mapping steady-state lubricating oil consumption rate. Numerous prior publications describe the evolution of this technique over time as well as the prior art in the area of lubricant impact on emissions [1–12]. As part of this project, the lubricant oil consumption of 4 different cylinder kits were accurately quantified at 4 steady-state operating conditions typical of North American freight locomotive operation within less than 40 hours of actual engine running. Applying this measurement technique, a reduction of lubricant oil consumption of 75%+ in comparison to the baseline cylinder kits were documented.

Quantitative Estimation Technique for Wear Amounts by Real Time Measurement of Wear Debris in Lubricating Oil

2011 ◽  
Vol 308-310 ◽  
pp. 647-650 ◽  
Author(s):  
Wen Bin Sun
Keyword(s):  
Real Time ◽  
Wear Debris ◽  
Particle Concentration ◽  
Quantitative Estimation ◽  
Diagnostic Technique ◽  
Lubricating Oil ◽  
Estimation Technique ◽  
Real Time Measurement ◽  
Life Prognosis ◽  
On Line

A diagnostic technique that can estimate quantitatively wear amounts under lubricated condition was tentatively designed using the on-line particle concentration and counting technique. In this proposed device, the standing surface acoustic wave (SSAW) was used to concentrate the wear debris in the lubricating oil in a micro-channel, the debris were then delivered to an appropriately sized detector and scanned one by one. The size and number of wear debris in the circulating oil could be therefore measured and counted on-line. The volume of each wear particles was calculated by accumulating each volume in real time. The wear debris amounts obtained by this quantitative estimation technique were fairly similar to the measured values of mass loss of the specimens. This proposed device was conveniently embedded in the lubricating system. This study was expected to open new avenues for the real time fault diagnosis and life prognosis of machine.

scholarly journals Quantitative Measuring Analysis Method and Mechanism of Wear Particle Settlement

2021 ◽  
Vol 252 ◽  
pp. 03037
Author(s):  
Kaituo Zhang ◽  
Zhiyong Lv
Keyword(s):  
Specific Gravity ◽  
Magnetic Induction ◽  
Wear Particle ◽  
Lubricating Oil ◽  
Precipitation Process ◽  
Wear Particles ◽  
Analysis Method ◽  
Abrasive Particles ◽  
Initial Stage ◽  
Precipitation Analysis

The size and distribution of wear particle in lubricating oil, as important numerical information available in ferrography, is one of the key indexes in wear diagnosis. In this paper, a new method for measuring the size and distribution of abrasive particles is proposed. First, all the abrasive fluid is left standing until all the abrasive particles are precipitated to the bottom. Then, the measuring container is inverted and the whole precipitation process of abrasive particles is recorded by magnetic induction instrument. And according to the precipitation analysis of the wear particle, the following results were obtained:1) At the initial stage of the particle settlement, the gravity, the buoyancy and the drag force of the oil achieve balance quickly, the time and distance of the wear particle moving at a constant velocity can be neglected. 2) The settling velocity is related to the diameter and specific gravity of the wear particle as well as the specific gravity and viscosity of the oil, the distribution of the wear particle is proportional to the square of the diameter of the particle, using the magnetic induction technology, the distribution of particle can be measured by settling time for different sizes of wear particles. 3) Measure the wear particle oil directly, there are different sizes of particles settlement in the bottom at the same time, which causes the difficulty in identifying the size of the particle settlement. The particle should be settled first, and then inverted, settling the particle in accordance with the order from large to small, which facilitates the measurement of different sizes of the particles, different times correspond to different sizes of the particles. 4) The bigger the particle is, the more accurate the measurement and counting is, the smaller the particle is, the bigger the error is.

Quantitative estimation of wear amounts by real time measurement of wear debris in lubricating oil

2010 ◽  
Vol 43 (1-2) ◽  
pp. 388-394 ◽  
Author(s):  
Y. Iwai ◽  
T. Honda ◽  
T. Miyajima ◽  
S. Yoshinaga ◽  
M. Higashi ◽  
...  
Keyword(s):  
Real Time ◽  
Wear Debris ◽  
Quantitative Estimation ◽  
Time Measurement ◽  
Lubricating Oil ◽  
Real Time Measurement

Fault diagnosis of journal bearing in a hydropower plant using wear debris, vibration and temperature analysis: A case study

2020 ◽  
Vol 234 (3) ◽  
pp. 235-242 ◽  
Author(s):  
Rakesh Ranjan ◽  
Subrata Kumar Ghosh ◽  
Manoj Kumar
Keyword(s):  
Fault Diagnosis ◽  
Wear Debris ◽  
Journal Bearing ◽  
Vibrational Energy ◽  
Hydropower Plant ◽  
Lubricating Oil ◽  
Wear Particles ◽  
Vibration Data ◽  
Abnormal Increase ◽  
Thrust Pad

Analysis of wear debris, vibration and temperature of journal bearing has been integrated to increase the accuracy in fault diagnosis of a hydropower plant. Samples of used lubricating oil, vibration data and bearing temperature at different intervals were collected. Wear particles and acceleration caused by vibration were analysed for the fault detections. An abnormal increase in the temperature and vibrational energy was observed after 200 days of continuous operations. In the last sample, an abnormal increase in aspect ratio of the wear particles was also observed. Scratches and wiping mark were found over the surface of bearing block and side thrust pad. This confirmed the fault of machine by the analysis of condition monitoring data. Further rectification was done by the replacement of bearing block.

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