Flow pulsation reduction for variable displacement motors using cross-angle
2007 (English)In: Power Transmission and Motion Control (PTMC 2007) / [ed] D. N. Johnston, and A. Plummer, Essex: Hadleys Ltd , 2007, 103-116 p.Conference paper (Refereed)
This paper considers using the cross-angle in variable displacement hydraulic machines. The cross-angle is a fixed displacement angle around the axis perpendicular to the normal displacement direction. The cross-angle changes the angles to the pistons top and bottom dead centres as a function of the fraction of displacement in such a way that the valve plate timing is varied and different pre-compression and decompression angles are obtained. A non-gradient optimisation technique, the Complex method, is used together with a comprehensive simulation model in order to find the optimal cross-angle for a variable displacement hydraulic motor. The paper shows that the cross-angle can be used to reduce noise in variable displacement motors. One issue that makes the motor application more difficult is the increased dependence between outlet and inlet flow ripple which is not found in pump applications. Furthermore, the paper discusses how to use the cross-angle for machines which can work both as a motor and a pump.
Place, publisher, year, edition, pages
Essex: Hadleys Ltd , 2007. 103-116 p.
Cross-angle flow pulsations noise hydraulic pump hydraulic motor
National CategoryEngineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-40965Local ID: 54778ISBN: 978-0-86197-140-4OAI: oai:DiVA.org:liu-40965DiVA: diva2:261814
Power Transmission and Motion Control (PTMC 2007), 12-14 September, Bath, UK