Pilot operated miniature valve with fast response and high flow capacity

Lantela, Tapio; Kajaste, Jyrki; Kostamo, Jari; Pietola, Matti

doi:10.1080/14399776.2014.893712

Cited by 13 publications

(9 citation statements)

References 1 publication

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“…In order to make digital valve systems a feasible alternative for proportional valves in a wider area of applications, their size must be reduced. Research into miniaturizing digital valve systems has been conducted for close to ten years now and it is ongoing [4][5][6] . Miniaturizing the individual on/off valves reduces the dimensions of the valve systems or enables including a larger number of valves in a certain sized valve system, thus improving the control resolution of flow rate and the motion of hydraulic actuators.…”

Section: Introductionmentioning

confidence: 99%

Selective Laser Melted Digital Hydraulic Valve System

Chekurov

Lantela

2017

3D Printing and Additive Manufacturing

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The purpose of this paper is to investigate the possibility of manufacturing a digital hydraulic valve system using additive manufacturing (AM) and to identify the challenges and benefits of doing so. In this study, an existing hydraulic valve manifold, operating at pressures up to 25 MPa, was redesigned for selective laser melting (SLM) and further optimized with computational fluid dynamics. Certain dimensioning challenges were encountered because laser melting is not yet accurate enough for some features but these challenges were circumvented. The manifold was successfully manufactured from tool steel and tested for maximum operating pressure and flow capacity. Due to the improved flow channels, the selective laser melted manifold provided up to 44% reduction in the energy losses caused by flow resistance. This paper demonstrates that SLM can be used to improve the performance of hydraulic valves and that the cost of SLM manifolds is feasible for high-end valve assemblies.

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Section: Introductionmentioning

confidence: 99%

Selective Laser Melted Digital Hydraulic Valve System

Chekurov

Lantela

2017

3D Printing and Additive Manufacturing

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“…Lantela et al [45] perhaps most closely answered Scheidl et alś call for a standardised on/off valve that could be cascaded and combined to meet the needs of the larger digital fluid power community. By developing a valve requiring only 4cm 3 of volume whilst still flowing 9L/min at a 35bar pressure drop and having multiple instances machined onto a block, the dream of a single valve design that can be utilised through the field is closer.…”

Section: Digital Valvesmentioning

confidence: 96%

“…Nonetheless it is worthwhile to compare the performance of the valve with other proposed designs. Lantela et al [45] provide in their recent paper a comparison of their valve, other digital hydraulic prototypes and two commercially available valves. Table 7.1 appends the performance of the valve in this paper to the list and adds a new metric, rate of change of flow, which looks at how much flow each valve is able to switch.…”

Section: Valvementioning

confidence: 99%

Control of a fast switching valve for digital hydraulics

Sell¹

2013

Linköping Electronic Conference Proceedings

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“…, when the pilot valve controlled by the pulse width modulation, the control pressure above the poppet alternate between the supply pressure and the tank pressure while the pressure under the poppet is always equal to the supply pressure. Driven by the control pressure and the supply pressure, the poppet can connect or disconnect the hydraulic [35]. A 3/2 spool valve is applied as the pilot stage and a 2/2 ball valve is used as the main stage.…”

Section: Direct Drive Hsvmentioning

confidence: 99%

“…Due to the high power density of the hydraulic transmission, the pilot operated valves have a stronger flow capacity than the direct drive valves with similar size. For example, the valve designed by Lantela et al can achieve a flow rate of 9 L/min with a 4 cm 3 volume [35].…”

Section: Pilot Operated Hsvmentioning

confidence: 99%

Development of High-Speed On–Off Valves and Their Applications

Wang

Chen

Huang

et al. 2022

Chin. J. Mech. Eng.

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With the widespread application of the computer and microelectronic technology in the industry, digitization becomes the inevitable developing trend of the hydraulic technology. Digitization of the hydraulic components is critical in the digital hydraulic technology. High-speed on-off valves (HSVs) which convert a train of input pulses into the fast and accurate switching between the on and off states belong to widely used basic digital hydraulic elements. In some ways, the characteristics of the HSVs determine the performance of the digital hydraulic systems. This paper discusses the development of HSVs and their applications. First, the HSVs with innovative structures which is classified into direct drive valves and pilot operated valves are discussed, with the emphasis on their performance. Then, an overview of HSVs with intelligent materials is presented with considering of the switching frequency and flow capacity. Finally, the applications of the HSVs are reviewed, including digital hydraulic components with the integration of the HSVs and digital hydraulic systems controlled by the HSVs.

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Pilot operated miniature valve with fast response and high flow capacity

Cited by 13 publications

References 1 publication

Selective Laser Melted Digital Hydraulic Valve System

Selective Laser Melted Digital Hydraulic Valve System

Control of a fast switching valve for digital hydraulics

Development of High-Speed On–Off Valves and Their Applications

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