Adaptive Model of Engine Vibration Signal for Diagnostics of Mechanical Defects

Komorska, Iwona

doi:10.5755/j01.mech.19.3.4658

Cited by 5 publications

(7 citation statements)

References 4 publications

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“…Based on each series of 64 measurements, the flat fuzzy set type u Λ, corresponding to the noise emission's value in form (6), has been defined. (6) …where: FS Λ (x) -membership function of the fuzzy set type Λ x -element of the fuzzy set domain lrk -minimum value of the fuzzy set's nucleus lrs -minimum value of the fuzzy set's carrier rrs -maximum value of the fuzzy set's carrier…”

Section: Fuzzy Analysis Of the Values Of The Considered Operating Parmentioning

confidence: 99%

“…Apart from combustion gas emissions, noise coming into being at the time of a combustion engine's operation is one of the most important factors determining the engine operation arduousness. The sources of noise in an engine include suction murmurs, effects of the mechanical engine parts and fixtures contact, and most of all the process of fuel combustion and its removal from the engine via the exhaust system [6]. The drive units' technological development allows for the improvement of their operation's quality, including imitation of the level of emitted sounds reduction of their arduousness for the environment [7].…”

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confidence: 99%

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Impact of Biocomponent Additive to Diesel Oil on Values of Selected Functional Parameters of Transport Means

Markiewicz¹,

Muślewski²,

Pająk³

2020

Pol. J. Environ. Stud.

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The structure of combustion engines enables their modernization and, consequently, a return to the idea of plant fuels. Running out of petroleum fuels is an argument opting for resuming the plant fuel concept. Crude oil occupies the first place in the structure of the natural energy sources' consumption [1]. Diesel oil, the share of which in the total processing amounts to from 34% to 41%, while petrol is 20% [2], is the main product of the crude oil's refinement. The European Union predictions indicate an increase in diesel oil use in the transportation sector and maintaining its constant use as an engine fuel. The legal conditionings of the European Union, which determine the biofuel's path of development, have an impact on

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Section: Fuzzy Analysis Of the Values Of The Considered Operating Parmentioning

confidence: 99%

mentioning

confidence: 99%

Impact of Biocomponent Additive to Diesel Oil on Values of Selected Functional Parameters of Transport Means

Markiewicz¹,

Muślewski²,

Pająk³

2020

Pol. J. Environ. Stud.

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“…So, some scholars have carried out a lot of researches, like collecting, extracting, and recognizing various kinds of information that appears during the working process of engines. Many engine fault detection and identification methods have been proposed, in which the most frequently used one is the using of the vibration signals [2][3][4]. By installing a vibration sensor somewhere in the engine to collect the corresponding vibration signal in the engine during operation, the collected vibration signal is processed in the time domain, frequency domain, or time-frequency domain, to further achieve the identification of specific faults at the location.…”

Section: Introductionmentioning

confidence: 99%

Fault Identification Method of Diesel Engine in Light of Pearson Correlation Coefficient Diagram and Orthogonal Vibration Signals

Zhao

Zeng

et al. 2019

Mathematical Problems in Engineering

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In order to select fault feature parameters simply and quickly and improve the identification rate of diesel engine faults by using the vibration signals, this paper proposes a diesel engine fault identification method on the basis of the Pearson correlation coefficient diagram (PCC Diagram) and the orthogonal vibration signals. At first, the orthogonal vibration acceleration signals are synchronously acquired in the direction of the top and side of the cylinder head. And the time-domain feature parameters are extracted from the orthogonal vibration acceleration signals to obtain the Pearson correlation coefficient (PCC). Then, the correlation coefficient diagram used to do feature parameter screening is constructed by selecting the feature parameters with the correlation coefficient of more than 0.9. Finally, generalized regression neural network (GRNN) is adopted to classify and identify fuel supply fault in diesel engine. The results show that using the PCC Diagram can simplify the selection process of the feature parameters of the orthogonal vibration signals quickly and effectively. It can also improve the fault identification rate of diesel engine significantly with the help of adding the newly proposed cross-correlation coefficient of the orthogonal vibration signals into the GRNN input feature vector set.

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“…The originality pertains to the research method, its application in marine transport, research conditions and the approach to the diagnostic evaluation. The incorporation of the actual operating conditions of the object [3][4][5][6][7][8][9] and new variables of the fuel injection process (injector design, fuel feed conditions, reception of the measurement signal from the injector and the cylinder wall and injector wear) only add to the originality of the authors' approach to the study on the research problem supplemented by the application of vibroacoustic signal in this type of analyses.…”

Section: Introductionmentioning

confidence: 99%

Analysis of vibroacoustic estimators for a heavy-duty diesel engine used in sea transport in the aspect of diagnostics of its environmental impact

Merkisz-Guranowska¹,

Waligórski²

2016

J. vibroeng.

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The paper describes the impact of a marine engine operation on selected vibroacoustic quantity estimators and their characteristics made in different signal domains. The authors focused on the assessment of the combustion process diagnostic for the engine operating characteristics to obtain information on its functional relations and its nature determined by changes in the main structural and operational point measures, in a powertrain of a non-road means of sea transport. In the empirical research, the vibration, acoustic signal generation and its propagation have been selected to obtain quantitative measures of an engine diagnostic assessment. The authors have confirmed that the considered vibroacoustic estimators and their specified characteristics can be useful for a continuous engine assessment in a vehicle during its normal operation, which gives additional tools to perform more accurate diagnostics under real stationary and non-stationary operating conditions. Furthermore, it makes it possible to identify malfunctions in regular operation of the means of transport, which can be also helpful in the identification of their sources. All such factors and the obtained analyses are in strict correlation with the present and future requirements of the international and domestic regulations for means of transport fitted with combustion engines.

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Adaptive Model of Engine Vibration Signal for Diagnostics of Mechanical Defects

Cited by 5 publications

References 4 publications

Impact of Biocomponent Additive to Diesel Oil on Values of Selected Functional Parameters of Transport Means

Impact of Biocomponent Additive to Diesel Oil on Values of Selected Functional Parameters of Transport Means

Fault Identification Method of Diesel Engine in Light of Pearson Correlation Coefficient Diagram and Orthogonal Vibration Signals

Analysis of vibroacoustic estimators for a heavy-duty diesel engine used in sea transport in the aspect of diagnostics of its environmental impact

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