Abstract
This paper introduces a new microinjector designed for optimising gasoline direct-injecting engines. The basic idea for the construction of this microinjector was to develop a new kind of valve with an extremely high lifting speed. Generally, the latter can be realised by integrating a piezoelectric stack actuator in the injector in combination with small masses for the accelerated parts. Due to the material properties of piezoceramics, this solution requires an actuator which is comparatively long in size. But it is desirable to keep the actuator as short as possible in order to reduce the production costs and to additionally increase the lifting speed of the valve. To adapt the specifications of the actuator to the requirements of the valve, this present microinjector operates with a new, miniaturised stroke amplifying unit. The miniaturisation allows the integration of the unit into the injector tip without extending the outside diameter of 7 mm. Simulations have been performed to demonstrate the high dynamic performance of the injector as well as to optimise the stiffness of the mechanical parts that are directly involved in the opening/closing procedure. Injection quantity measurements have also been performed with the first prototypes, using a hydraulic test bench.
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References
C. Stan (Hrsg.): Direkteinspritzsysteme, Berlin, Heidelberg, 1999.
H. Eichlseder, E. Baumann, B. Hoss, P. Mueller, S. Neugebauer:, Herausforderungen auf dem Weg zur EU IV-Emissionserfuellung bei Otto Direkteinspritz-Motoren, 21. Wiener Motorensymposium, 2000.
S. Kraemer: Untersuchungen zur Gemischbildung, Entflammung und Verbrennung beim Ottomotor mit Benzin-Direkteinspritzung, VDI Fortschrittsbericht, 1998.
C. Anzinger, U. Schmid, G. Kroetz, S. Krell: Microinjector For DI Gasoline Engines Based On MST-Actuator, MST News, 2001.
Piezoelectrical and Electrostrictive Stack Actuators, Product Catalogue, Piezomechanik GmbH, 2001.
J. Heinrich: Modellierung und Simulation piezokeramischer Aktoren als Grundlage zur Entwicklung alternativer Steuer-und Regelprinzipien, Isle, Ilmenau, 1999.
K.-H. Hoffmann, K. Hummel, T. Maderstein, A. Peters: Das Common-Rail Einspritzsystem. MTZ Motorentechnische Zeitschrift 58, 1997.
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© 2002 Springer-Verlag Berlin Heidelberg
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Anzinger, C., Schmid, U., Kroetz, G., Klein, M. (2002). A Piezoelectric Driven Microinjector for Dl-Gasoline Applications. In: Krueger, S., Gessner, W. (eds) Advanced Microsystems for Automotive Applications Yearbook 2002. VDI-Buch. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-18213-6_20
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DOI: https://doi.org/10.1007/978-3-642-18213-6_20
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-62114-7
Online ISBN: 978-3-642-18213-6
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