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Warianty tytułu
Języki publikacji
Abstrakty
In order to analyze the processes during the gas exchange in the engine, knowledge of pressure states in both inlet and outlet is required. This pressure measuring is known as "low pressure indication ". In the presented work, three examples of controlling the quality of low pressure measurement are presented. The projects performed during the collaboration with Kistler showed the high demands regarding accuracy, dimensions and lifetime of measuring chains and piezoresistive sensors for low pressure measurement. To gain reliable resultsfor use in simulation tools for calculating and modeling gas exchange phase the sensor and measuring chain must be designed in order to consider all possible influences on the signal such as thermal and mechanical stress, electrical parasitic induction and gas dynamic effects. The increasing demand regarding accuracy and low thermal drift for highly dynamic measurements and the restricted space available in most applications are further challenges. It was shown that: a small inaccuracy of measurement, lower than 10 mbar can be attained, the asymmetric course of the exhaust pulse can clearly be verified, and a protection screen for a sensor exposed to the exhaust blow-off pressure wave can be a tool to optimize between longlife and accuracy.
Słowa kluczowe
Wydawca
Czasopismo
Rocznik
Tom
Strony
67--80
Opis fizyczny
Bibliogr. 10 poz., rys.
Twórcy
autor
autor
autor
- AFHB, Laboratory for IC-Engines and Exhaust Gas Control Berne University of Applied Sciences Technics & Informatics, BFH-TI, Biel-Bienne, Switzerland tel: +41 32 3216680,fax: +41 32 3216681, jan.czerwinski@bfh.ch
Bibliografia
- [1] Kuratle, R., Motorenmesstechnik, Vogel Buchverlag, Iss. 1, 1995.
- [2] Späni, Die Anwendung piezoelektrischer Druckaufnehmer in der Entwicklung von Verbrennungsmotoren. Vogel Verlag, Sonderdruck aus Automobilindustrie, 26 Jahrgang, Heft 3, Kistler Instruments AG, Winterthur, Switzerland, 1981.
- [3] Walter/Brechbühl/Gossweiler/Schnepf/Wolfer, Pressure Indicating with Measuring Spark Plugs on a DI-Gasoline Engine – State of Technology, Kistler Instruments AG Winterthur, Switzerland, AVL Germany, 6th International Symposium for Combustion Diagnostics, Baden-Baden 2004.
- [4] Kistler Instrumente AG; Special Print Low Pressure Indicating 2004, Optimization of gas exchange by a suitable combination of pressure indicating, analysis and simulation, 9th Symposium The Working Process of the Internal Combustion Engine, Graz 2003.
- [5] Kistler Instruments AG; Produktdokumentation, www.kistler.com, (Legende AFHB).
- [6] Neubert, T., Qualitätsbetrachtungen von Niederdruck-Indizierverfahren für Gaswechselmessungen an Verbrennungsmotoren, Diplomarbeit, durchgeführt an der Berner Fachhochschule, Hochschule für Technik und Informatik Biel, CH, eingereicht an der Hochschule für Technik und Wirtschaft Dresden (FH), DE, 2005.
- [7] De Fazio, A., Hilfiker, T., Untersuchung der gasdynamischen Effekte im Auspuff eines Ottomotors mit Hilfe der Kistler – Niederdruckindizierung, Diplomarbeit, durchgeführt und eingereicht an der Berner Fachhochschule, Technik und Informatik Biel, CH, 2007.
- [8] Dawodi, B., Krasniqi, A., Prüfung der Drucksensoren für Niederdruckindizierung eines PkW Ottomotors, Diplomarbeit, durchgeführt und eingereicht an der Berner Fachhochschule, Technik und Informatik Biel, CH, 2009.
- [9] Kistler Instrumente AG; Special Print Pressure Sensors 2008, New Opportunities for Gas Exchange Analysis Using Piezoresistive High-Temperature Absolute Pressure Sensors.
- [10] Kistler Instrumente AG, www.kistler.com, Measuring Intake and Exhaust Pressures.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BUJ7-0016-0040