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Micro Jet Engine Oil Consumption Measurement Technique

[+] Author Affiliations
Ivo Sandor

University of Stuttgart, Stuttgart, Germany

Stephan Staudacher

University Stuttgart, Stuttgart, Germany

Gernot Hertweck

Daimler AG, Stuttgart, Germany

Paper No. GT2009-59800, pp. 191-199; 9 pages
doi:10.1115/GT2009-59800
From:
  • ASME Turbo Expo 2009: Power for Land, Sea, and Air
  • Volume 5: Microturbines and Small Turbomachinery; Oil and Gas Applications
  • Orlando, Florida, USA, June 8–12, 2009
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-4886-9 | eISBN: 978-0-7918-3849-5
  • Copyright © 2009 by ASME

abstract

Oil consumption of micro gas turbine engines plays a significant role with regards to their practical application in aerospace. In this context an oil consumption measurement device has been developed on behalf of Daimler AG for the application to vehicle turbo chargers. This device has been used to measure the oil consumption of an own design micro jet engine of 400 N thrust. The design of the device is based on the principle of gravimetric weighting. In the past, volumetric principles have been applied to engine oil consumption measurements. Technical advances in the field of piezoelectricity have improved the accuracy of gravimetric weighting in such a way that today its accuracy is comparable to volumetric gauging. Moreover, unlike volumetric gauging gravimetric weighting is not influenced by the density or the amount of emulsified gas in the oil. Hence, application of gravimetric weighting represents a more robust and more efficient way to evaluate oil consumption in micro gas turbine engines. Unlike non-conventional measurement strategies like emission measurement and tracer techniques, gravimetric weighting allows very simple and convenient oil consumption measurements [3]. The device was validated using defined laboratory measurements. Experimental results are shown.

Copyright © 2009 by ASME
Topics: Jet engines

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