Corrosion sensors for engine oils—laboratory evaluation and field tests

Agoston, A.; Dörr, Nicole; Jakoby, Bernhard

doi:10.1016/j.snb.2007.07.041

Cited by 11 publications

(9 citation statements)

References 6 publications

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“…In fact, the search for surrogated variables and correlation development are encouraged. Agoston et al [15,16] introduced alternative sensors which enable in-line oil viscosity and corrosiveness monitoring, respectively. Such sensors surely agree with the ILC-based operational philosophy.…”

Section: The Ilbc Unit Operationmentioning

confidence: 99%

Rethinking Petroleum Products Certification

Feital

Lima

Pinto

et al. 2013

Journal of Petroleum Engineering

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Facing various challenges in the everchanging refining landscape, it is essential that refiners raise their operations to new levels of performance. Advances in in-line blending (ILB) technology accuracy and reliability have encouraged refiners to take a step forward. Having ILB as a precursor, a new methodology is in concern: the so-called in-line certification (ILC) procedure. Blending processes make use of in-line measurements which, at least in principle, can be used to certificate the product, if the precision and accuracy of available in-line measurements are comparable to measurements provided by standard off-line tests. Such procedure may allow for significant reduction in refinery's tank farming and product inventory, increase of process flexibility, and reliability with benefits to company image. The main limitations for real-world ILC applications in the oil industry remain at the legal and technological levels. This paper proposes novel concepts and foundations of a basic in-line certification model for petroleum products regarding current interdisciplinary challenges and promising solutions.

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Section: The Ilbc Unit Operationmentioning

confidence: 99%

Rethinking Petroleum Products Certification

Feital

Lima

Pinto

et al. 2013

Journal of Petroleum Engineering

View full text Add to dashboard Cite

show abstract

“…Due to the corrosive attack by the oil, a material loss of the metal film occurs which can be monitored by electrical means. Previous concepts measured the electrical resistance of a metal film (Agoston et al, 2005a;Agoston et al, 2007). This assembly requires a resistive connection between metal film and electronic measuring equipment.…”

Section: Oil Condition Sensor Based On Corrosivenessmentioning

confidence: 99%

“…In the latter case, the position of the blotches or spots on the sacrificial layer showed an influence on the sensor signal. (Agoston et al, 2006) In order to overcome these shortcomings, a novel readout method was presented ) which is based on corrosion measurement without the need of an electrical contact using capacitively coupled planar electrodes. As shown in Figure 1, the novel sensor consists of an inert nonconductive substrate with a metal film as sacrificial layer on one side which is directly exposed to the corrosive medium.…”

Section: Oil Condition Sensor Based On Corrosivenessmentioning

confidence: 99%

See 1 more Smart Citation

Determination of the Impact of Biogas on the Engine Oil Condition Using a Sensor Based on Corrosiveness

Schneidhofer¹,

Sen²,

Dörr³

2011

Biofuel Production-Recent Developments and Prospects

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“…Jedoch hä ngen diese Parameter von vielen Einflussfaktoren ab, wodurch die Interpretation des Messwerts erschwert wird. Mit Infrarot-Sensoren wie in (Agoston et al, 2008;Kudlaty, Purde, Koch, 2003;Van De Voort et al, 2006) (Agoston, Svasek, Jakoby, 2005;Agoston, Doerr, Jakoby, 2007; Nach diesen Herstellungsprozessen wurden die hergestellten Korrosionssensoren mit einem Schutzlack ü berzogen, um eine Passivierung der Metalloberflä che durch die Luft wä hrend der Lagerung zu minimieren.…”

Section: Einfü Hrungunclassified

Online-Ölzustandsüberwachung mit chemischen Korrosionssensoren

Schneidhofer

Dörr

2009

Elektrotech. Inftech.

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Ch. Schneidhofer, N. Dö rr Die Versä uerung ist ein wichtiger Parameter bei der Auswertung des Zustands von Schmierstoffen, insbesondere bei stationä ren Motoren, welche mit Biogas betrieben werden. Einige Kontaminationen im Biogas, beispielsweise Schwefelwasserstoff, bilden wä hrend des Verbrennungsprozesses aggressive Verbindungen. Im betrachteten Anwendungsgebiet wird die Versä uerung des Motorö ls als wesentlicher Parameter fü r den Ö lwechsel angesehen, da saure Verbindungen gegebenenfalls Korrosion von Motorkomponenten verursachen kö nnen. Jedoch muss ein hohes Maß an Versä uerung nicht zwangsweise Korrosion verursachen. Hierfü r wird ein chemischer Korrosionssensor zur Online-Ü berwachung der Korrosivitä t von Motorö len vorgestellt. Dieses Sensorkonzept basiert auf dem Materialverlust von dü nnen Metallstreifen aufgrund von Korrosion. Der Materialverlust wird durch die Messung des elektrischen Widerstands beobachtet. Die Ergebnisse von Korrosionssensoren, welche online in stationä ren Gasmotoren getestet wurden, werden vorgestellt. Hierbei konnte wie erwartet ein Zusammenhang der Versä uerung des Schmierstoffes mit den Ergebnissen des Korrosionssensors hergestellt werden. Weiters zeigten die verwendeten Metalle unterschiedliche Sensitivitä t gegenü ber korrosivem Angriff. Das Konzept des Korrosionssensors eignet sich daher besonders als Vorwarnstufe bei der Online-Ö lzustandsü berwachung in Gasmotoren. Schlü sselwö rter: Korrosion; Korrosionssensor; Ö lzustandsü berwachung; WiderstandsauswertungOnline oil condition monitoring using chemical corrosion sensors.The knowledge of the degree of acidification is of crucial importance to evaluate the condition of lubricating oils, in particular in stationary engines driven by gaseous biofuels. Some contaminants of such biofuels, e.g. hydrogen sulfide, form aggressive compounds during the combustion process. In the reported field of application, acidification is considered as the main indicator for an oil change. In some cases, oil acidification results in the corrosion of engine parts. On the other hand, a high degree of acidification does not necessarily cause corrosion. For this reason, the online monitoring of the engine oil's corrosiveness by means of a chemical corrosion sensor is proposed. This sensor concept is based on material loss of a thin metal film due to corrosion. The metal films are prepared from selected metals. The material loss is monitored electrically by measuring the resistance of the metal films. The usefulness of the proposed sensor concept is illustrated by results from corrosion sensors tested online in stationary gas engines. As expected, a relationship between the acidification of the lubricant and the results obtained with the corrosion sensors can be shown. Further, the metals used showed different sensitivity towards corrosive attack. This corrosion sensor concept proved to be applicable for pre-warning when installed as an online condition monitoring sensor in gas engines.

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Corrosion sensors for engine oils—laboratory evaluation and field tests

Cited by 11 publications

References 6 publications

Rethinking Petroleum Products Certification

Rethinking Petroleum Products Certification

Determination of the Impact of Biogas on the Engine Oil Condition Using a Sensor Based on Corrosiveness

Online-Ölzustandsüberwachung mit chemischen Korrosionssensoren

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