Ignition System-Embedded Fiber-Optic Combustion Pressure Sensor for Engine Control and Monitoring

Poorman, Thomas; Xia, L. Q.; Wlodarczyk, Marek T.

doi:10.4271/970845

Cited by 9 publications

(2 citation statements)

References 1 publication

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“…Optische Zylinderdrucksensoren leiten Licht in einen Sensorkopf zu einer beweglichen Membran, von der es reflektiert und zu einer Photodiode gelenkt wird. Die reflektierte Lichtmenge ist abhängig von der Druckeinwirkung auf die Membran [16,17]. Die Ionenstrommessung basiert auf dem Prinzip, dass das Gasgemisch aufgrund der hohen Temperaturen während der Verbrennung einen groẞen Anteil an Ionen besitzt und somit schwach leitfähig ist.…”

Section: Stand Der Technik Und Ziel Der Arbeitunclassified

Self-sensing-Aktoren am Beispiel eines piezoelektrischen Einspritzventils mit sensorischen Fähigkeiten

Zols

Bachmaier

Gerlich

et al. 2014

At – Automatisierungstechnik

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Zusammenfassung: Piezoelektrische Einspritzventile werden im Automobilbereich bisher als reine Aktoren verwendet, obwohl die darin enthaltenen Piezoaktoren als sogenannte Self-sensing-Aktoren in der Lage sind, auch sensorische Aufgaben zu übernehmen. Dadurch könnten verbrennungsspezifische Gröẞen bestimmt werden, ohne die Kosten-und Bauraumanforderungen wesentlich zu erhö-hen. Im folgenden Artikel wird ein piezoelektrisches Einspritzventil mit sensorischen Fähigkeiten vorgestellt. Es wird gezeigt, dass dieses Bauteil die Überwachung des Zylinderdrucks erlaubt.Schlüsselwörter: Modellbasierte Diagnose, Zylinderdruckmessung, kombiniertes Aktor-Sensor System, Klopfsensor, Joukowsky-Stoẞ.Abstract: Piezoelectric injectors can be viewed as selfsensing actuators and can, thus, be used as sensors. However, in the automotive area they are solely used as actuators. Using the sensory potential of the injector, combustion specific parameters could be determined without increasing costs and space. In the following article, a piezoelectric injector with sensoric abilities is presented. It could be shown that the monitoring of the combustion pressure is possible.

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Section: Stand Der Technik Und Ziel Der Arbeitunclassified

Self-sensing-Aktoren am Beispiel eines piezoelektrischen Einspritzventils mit sensorischen Fähigkeiten

Zols

Bachmaier

Gerlich

et al. 2014

At – Automatisierungstechnik

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“…The light power returned to the fiber varies based on the diaphragm deflection and 1 Optrand is a transducer manufacturer looking to produce a low-cost transducer for individual cylinder production. References include [He, G. et al, 1993, He, G. et al, 1994, Poorman, T. et al, 1995, Poorman T. et al, 1997, Wlodarczyk, M. et al, 1998a, Wlodarczyk, M. et al, 1998b. numerical aperture of the fiber.…”

Section: Fiberoptic Pressure Transducersmentioning

confidence: 99%

Multivariate Knock Detection for Development and Production Applications

Tousignant

Reader

Tjong

2004

Transportation: Transportation and Environment

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Combustion knock caused by end gas autoignition continues to be a limiting factor in the performance of automotive internal combustion engines. As such, the availability of efficient knock detection methods is a prime requirement for the optimization of engine mapping and control. Current production knock control systems are based on the measurement of mechanical vibration induced by the acoustic resonance excited in the combustion chamber during autoignition. These vibrations are measured using accelerometers on the engine block. Conversely, knock detection in the laboratory environment during engine development or calibration generally involves either acoustic methods or acquisition of in-cylinder pressure. The purpose of this study is to develop an improved multi-transducer vibration-based knock detection method with applications in engine development and production. The possibility of replacing the pressure-based detection methods in the laboratory environment presents many advantages relating to cost and efficiency. Moreover, the economy of a vibration-based system coupled with improved correlation to laboratory methods represents great potential for performance improvements if applied to production applications.

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An Overview of Combustion Diagnostics

Leipertz¹,

Pfadler²,

Schießl³

2010

Handbook of Combustion

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In this chapter, several of the diagnostic techniques commonly used to investigate combustion phenomena are reviewed, and a brief survey is provided of the mechanical probing techniques used to measure temperature, flow velocity, pressure and species concentrations (including flue gas diagnostics). The chapter includes an overview of optical techniques used for flow diagnostics, species concentration and temperature measurements in reacting flows. The use of imaging and multidimensional diagnostics for typical structures in the combustion field is also outlined. The simultaneous use of different planar measurement techniques describes state‐of‐the‐art of laser diagnostics in combustion research, and the potential for laser‐diagnostics to validate these approaches, as used in numerical simulations.

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Ignition System-Embedded Fiber-Optic Combustion Pressure Sensor for Engine Control and Monitoring

Cited by 9 publications

References 1 publication

Self-sensing-Aktoren am Beispiel eines piezoelektrischen Einspritzventils mit sensorischen Fähigkeiten

Self-sensing-Aktoren am Beispiel eines piezoelektrischen Einspritzventils mit sensorischen Fähigkeiten

Multivariate Knock Detection for Development and Production Applications

An Overview of Combustion Diagnostics

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