A NOVEL PILOTED FAST SWITCHING MULTI POPPET VALVE

Authors

  • Bernd Winkler Linz Center of Mechatronics
  • Andreas Ploeckinger Linz Center of Mechatronics, Altenbergerstraße 69, 4040 Linz, Austria
  • Rudolf Scheidl Johannes Kepler University of Linz, Altenbergerstraße 69, 4040 Linz, Austria

Keywords:

fast switching valve, seat valve, multi poppet valve

Abstract

Switching and digital hydraulics require adequate switching valves for their practical application. A major criterion is the switching time which should in most cases be less than 5 ms. The demands on valve nominal flow rate are rather wide and range from less than 1 l/min (@ 5 bar) up to hundreds of litres. In this paper a new seat valve concept is presented. It is a piloted valve and employs a multi poppet concept. Its nominal flow rate is about 100 l/min and its switching time is about 1 ms for a pressure drop of 5 bar. With this valve energy efficient switching drives can be realized, for instance in the 10 kW to 20 kW range. Its seat type design makes the main stage a non leaking valve. Piloting is realized by a fast 3/2 solenoid actuated spool type switching valve with a nominal flow rate of 10 l/min @ 5 bar and a total switching time of about 2 ms. The paper presents the design of the poppet valve, simulation studies and experimental results concerning its static and dynamic characteristics.

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Author Biographies

Bernd Winkler, Linz Center of Mechatronics

Bernd Winkler obtained his bachelors degree in Mechatronics in 2000 and doctoral degrees in 2004 both from the Johannes Kepler University in Linz, Austria. He has been an employee of Linz Center for Mechatronics (LCM) GmbH since 2005. Currently he serves as the Business Unit Manager and head of Advanced Hydraulic Drive and Actuation Systems in LCM GmbH.

Andreas Ploeckinger, Linz Center of Mechatronics, Altenbergerstraße 69, 4040 Linz, Austria

Andreas Ploeckinger obtained his bachelors degree in Mechatronics in 2001 from the Johannes Kepler University in Linz, Austria. He has been an employee of Linz Center for Mechatronics (LCM) GmbH since 2002. Currently he serves as a Senior Researcher in LCM GmbH focusing on integrated electro-hydraulic hybrid drives.

Rudolf Scheidl, Johannes Kepler University of Linz, Altenbergerstraße 69, 4040 Linz, Austria

Rudolf Scheidl Born November 11th 1953 in Scheibbs (Austria). MSc of Mechanical Engineering and Doctorate of Engineering Sciences at Vienna University of Technology. Industrial research and development experience in agricultural machinery (Epple Buxbaum Werke), continuous casting technology (Voest Alpine Industrieanlagenbau) , and paper mills (Voith). Since Dec. 1990 Full Professor for Mechanical Engineering at the Johannes Kepler University Linz. Research topics: hydraulic drive technology and mechatronic design.

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Published

2010-11-01

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Original Article

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