scholarly journals Maintenance of Reducers with an Unbalanced Load Through Vibration and Oil Analysis Predictive Techniques

10.5772/20552 ◽  
2011 ◽  
Author(s):  
Aparecido Carlos ◽  
Daniel Fabiano ◽  
Maria da Consolacao Fonseca de Albuquerque
Keyword(s):  
Oil Analysis ◽  
Unbalanced Load

ANALYSIS OF AUTOMATIC TRANSMISSION USING FOURIER TRANSFORM INFRARED (FTIR) SPECTROCOPY

2019 ◽  
Vol 7 (SI-TeMIC18) ◽  
Author(s):  
Norhanifah Abdul Rahman ◽  
Matzaini Katon Katon ◽  
Nurina Alya Zulkifli Zulkifli
Keyword(s):  
Fourier Transform ◽  
Automatic Transmission ◽  
Fourier Transform Infrared ◽  
Oil Analysis ◽  
Wear Particles ◽  
Reliable Technique ◽  
Fluid Analysis ◽  
Analysis Technique ◽  
Machine Elements ◽  
Transmission Fluid

Automatic Transmission (AT) system is efficient in the aspects of vehicle safety, comfort, reliability and driving performance. The objectives of this paper are to collect the oil samples from AT systems of engine bus according to manufacturer's recommendations and analyse collected oil samples using oil analysis technique. The sample transmission fluid which was taken from the AT gearbox has been experimentally analyzed. The oil samples were taken with an interval of 5,000km, 30,000km, 50,000km, 80,000km, 180,000km and 300,000km for AT bus operation. These samples then have been analyzed by comparing between new and used transmission fluid using Fourier Transform Infrared (FTIR) spectroscopy. Oil analysis by FTIR is a form of Predictive Maintenance (PdM) to avoid major failure in machine elements. Most machine elements are not easily accessible in the transmission system. Having a reliable technique would avoid the needs to open the components unnecessarily, hence, help to prevent catastrophic failure which are very costly, and ease of regular monitoring. In order to identify the major failures of automatic gearbox, forecasts can be made regarding the lube transmission fluid analysis test. By using this test, the minor problems can be determined before they become major failures. At the end of this research, the wear particles profile for interval mileage of AT system was obtained. Keywords: Wear, Automatic Transmission (AT), Transmission fluid, Fourier Transform Infrared (FTIR), Oil analysis.

Oil Analysis―What It Reveals and What It Offers

2019 ◽  
Vol 73 (5) ◽  
pp. 438-442
Author(s):  
Kentaro Ootsuka ◽  
Eiji Suzuki
Keyword(s):  
Oil Analysis

Joint Oil Analysis Program Spectrometer Standards VHG Labs Inc. Qualification Report for D19-0, D3-100 and D12-XXX Series Standards

2013 ◽  
Author(s):  
Michael Peretich ◽  
Geoffrey eldridge ◽  
John Krizovensky ◽  
Douglas Mearns
Keyword(s):  
Oil Analysis ◽  
Analysis Program

scholarly journals Improving Power Quality by a Four-Wire Shunt Active Power Filter: A Case Study

Energies ◽  
2021 ◽  
Vol 14 (7) ◽  
pp. 1951
Author(s):  
Mihaela Popescu ◽  
Alexandru Bitoleanu ◽  
Mihaita Linca ◽  
Constantin Vlad Suru
Keyword(s):  
Power Quality ◽  
Quality Indicators ◽  
Reactive Power ◽  
Control Method ◽  
Active Power Filter ◽  
Active Power ◽  
Current Control ◽  
Shunt Active Power Filter ◽  
Power Filter ◽  
Unbalanced Load

This paper presents the use of a three-phase four-wire shunt active power filter to improve the power quality in the Department of Industrial Electronics of a large enterprise from Romania. The specificity is given by the predominant existence of single-phase consumers (such as personal computers, printers, lighting and AC equipment). In order to identify the power quality indicators and ways to improve them, an A-class analyzer was used to record the electrical quantities and energy parameters in the point of common coupling (PCC) with the nonlinear loads for 27 h. The analysis shows that, in order to improve the power quality in PCC, three goals must be achieved: the compensation of the distortion power, the compensation of the reactive power and the compensation of the load unbalance. By using the conceived three-leg shunt active power filter, controlled through the indirect current control method in an original variant, the power quality at the supply side is very much improved. In the proposed control algorithm, the prescribed active current is obtained as a sum of the loss current provided by the DC voltage and the equivalent active current of the unbalanced load. The performance associated with each objective of the compensation is presented and analyzed. The results show that all the power quality indicators meet the specific standards and regulations and prove the validity of the proposed solution.

Evaluation of the matrix effect in the quantitative bio-oil analysis by gas chromatography

Fuel ◽  
2021 ◽  
Vol 290 ◽  
pp. 119866
Author(s):  
Eliane Lazzari ◽  
Érica A. Souza Silva ◽  
Thiago R. Bjerk ◽  
Jaderson K. Schneider ◽  
Elina Bastos Caramão
Keyword(s):  
Gas Chromatography ◽  
Matrix Effect ◽  
Oil Analysis ◽  
Bio Oil ◽  
The Matrix
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