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COLLEGE OF COLLEGE OF AGRICULTURAL AND AGRICULTURE ENGINEERING BIOLOGICAL ENGINEERING Four-Quadrant Multi-Fluid Pump/Motor Four Quadrant Multi-Fluid Pump-Motor John Lumkes Purdue University
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Page 1: µ Y µ v D µ o ] r& o µ ] K>> ' K& K>> ' K& 'Z/ h>dhZ > E W ... Lumk… · W o v Ç ' ( } s o À K v ] v P l o } ] v P ~W lD ^ Z ( } v v } µ v U u u l } v v } o v Ç ] U i µ

COLLEGE OF COLLEGE OF AGRICULTURAL ANDAGRICULTURE ENGINEERING BIOLOGICAL ENGINEERING

Four-Quadrant Multi-Fluid Pump/Motor

Four Quadrant Multi-Fluid Pump-Motor

John LumkesPurdue University

Page 2: µ Y µ v D µ o ] r& o µ ] K>> ' K& K>> ' K& 'Z/ h>dhZ > E W ... Lumk… · W o v Ç ' ( } s o À K v ] v P l o } ] v P ~W lD ^ Z ( } v v } µ v U u u l } v v } o v Ç ] U i µ

COLLEGE OF COLLEGE OF AGRICULTURAL ANDAGRICULTURE ENGINEERING BIOLOGICAL ENGINEERING

Overview

• Potential of a four-quadrant multi-fluid pump/motor?

• How we are achieving this?• What are the benefits?• Results from the first mechanically actuated prototype.• Moving forward…

John Lumkes 2

Mechanically actuated valve prototype

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COLLEGE OF COLLEGE OF AGRICULTURAL ANDAGRICULTURE ENGINEERING BIOLOGICAL ENGINEERING

Background

• Digital Four Quadrant Multi-fluid Pump/Motor• Digital: utilizes digital displacement control

• On/off valves at inlet and outlet of each piston

• Four-quadrant: capable of pumping and motoring each in CW and CCW rotation

• Multi-fluid: pump lubrication does not depend on operating fluid

John Lumkes 3

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COLLEGE OF COLLEGE OF AGRICULTURAL ANDAGRICULTURE ENGINEERING BIOLOGICAL ENGINEERING

History (Purdue)

4

Cam Types

Valve Configuration

Implementation

Valve Improvement

Control Algorithms(Mode Switching and Valve Timing)

Sensor Reduction

Four-QuadrantMulti-Fluid Pump/Motor

John Lumkes

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COLLEGE OF COLLEGE OF AGRICULTURAL ANDAGRICULTURE ENGINEERING BIOLOGICAL ENGINEERING

Benefits

• General digital pump/motor advantages

• Eliminates valve plate losses• Leakage scales closely with

displacement• Pumping of non-conventional

fluids (water)• On/Off valves can open against

high pressure• Four quadrant operation• Self starting in motoring

• Specific advantages of proposed approach

• No need for pilot pressure• Higher efficiency • Simple, single lever, robust control

of displacement• No electrical energy needed• Lower cost

John Lumkes 5

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COLLEGE OF COLLEGE OF AGRICULTURAL ANDAGRICULTURE ENGINEERING BIOLOGICAL ENGINEERING

Operating Strategies

John Lumkes 6

◦ Flow Diverting Excess flow taken into the

chamber is diverted back to the low pressure port

◦ Flow Limiting Amount of flow taken into the

chamber is limited to the desired flow

◦ Sequential (Diverting or Limiting)

Individual cylinders are operated at full or zero displacement

4

20 BarInlet

320 BarOutlet

Valve 1 Valve 2

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COLLEGE OF COLLEGE OF AGRICULTURAL ANDAGRICULTURE ENGINEERING BIOLOGICAL ENGINEERING

◦ Flow Diverting Excess flow taken into the

chamber is diverted back to the low pressure port

◦ Flow Limiting Amount of flow taken into the

chamber is limited to the desired flow

◦ Sequential (Diverting or Limiting)

Individual cylinders are operated at full or zero displacement

Operating Strategies

Digital displacement control

4

20 BarInlet

320 BarOutlet

Valve 1 Valve 2

John Lumkes 7

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COLLEGE OF COLLEGE OF AGRICULTURAL ANDAGRICULTURE ENGINEERING BIOLOGICAL ENGINEERING

Electrically Actuated Valves (EAV)

• Valves actuated using solenoids• Low repeatability• Requires additional sensors and

embedded controls

John Lumkes 8

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COLLEGE OF COLLEGE OF AGRICULTURAL ANDAGRICULTURE ENGINEERING BIOLOGICAL ENGINEERING

Mechanically Actuated Valves (MAV)

• MAV Advantages• Fast actuation• No electrical energy needed• No additional sensors and embedded controls• Actuation repeatability is increased

• Critical for efficiency

John Lumkes 9

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COLLEGE OF COLLEGE OF AGRICULTURAL ANDAGRICULTURE ENGINEERING BIOLOGICAL ENGINEERING

Operating StrategyState Analysis

John Lumkes 10

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COLLEGE OF COLLEGE OF AGRICULTURAL ANDAGRICULTURE ENGINEERING BIOLOGICAL ENGINEERING

Cam Phasing

John Lumkes 11

Planetary Gearsets for Valve Opening/Closing(P/M Shaft connected to sun, cam masks connected to planetary carrier, adjustable rings)

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COLLEGE OF COLLEGE OF AGRICULTURAL ANDAGRICULTURE ENGINEERING BIOLOGICAL ENGINEERING

Implementation

John Lumkes 12

Inline Piston Pump

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COLLEGE OF COLLEGE OF AGRICULTURAL ANDAGRICULTURE ENGINEERING BIOLOGICAL ENGINEERING

Prototype

John Lumkes 13

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COLLEGE OF COLLEGE OF AGRICULTURAL ANDAGRICULTURE ENGINEERING BIOLOGICAL ENGINEERING

Experimental Test Stand

• Multi-piston digital pump/motor test stand

John Lumkes 14

• 3-piston digital pump

• One on/off valves per piston

• One check valve per piston

• Three 2,000 Hz pressure transducers

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COLLEGE OF COLLEGE OF AGRICULTURAL ANDAGRICULTURE ENGINEERING BIOLOGICAL ENGINEERING

Experimental Testing

John Lumkes

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COLLEGE OF COLLEGE OF AGRICULTURAL ANDAGRICULTURE ENGINEERING BIOLOGICAL ENGINEERING

Results for Mechanical Actuation

• Partial flow diverting shown here• Efficiency does not fall below 40%

John Lumkes 16

Overall hydraulic efficiency for pumping at 300rpm (left), 500rpm (right)

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COLLEGE OF COLLEGE OF AGRICULTURAL ANDAGRICULTURE ENGINEERING BIOLOGICAL ENGINEERING

John Lumkes 17

103 bar, 500 rpm103 bar, 300 rpm

34 bar, 500 rpm34 bar, 300 rpm

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COLLEGE OF COLLEGE OF AGRICULTURAL ANDAGRICULTURE ENGINEERING BIOLOGICAL ENGINEERING

GT Suite Overview• 1D multi-physics system simulation software• GT-Suite Tools

• CAD modeling and preparation • Converting 3D CAD model into GT model• Model building and run control• Post processing

• Hydraulics applications• System and component level models• Existing piston pump and valve component templates• Accurate pressure wave dynamics• Advanced features such as DoE and optimization

John Lumkes 18

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COLLEGE OF COLLEGE OF AGRICULTURAL ANDAGRICULTURE ENGINEERING BIOLOGICAL ENGINEERING

MAV Inline Schematic

John Lumkes 19

HP

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COLLEGE OF COLLEGE OF AGRICULTURAL ANDAGRICULTURE ENGINEERING BIOLOGICAL ENGINEERING

CAD Model Preparation

John Lumkes 20

Solid block

Flow volumes selected

Flow volumes extracted

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COLLEGE OF COLLEGE OF AGRICULTURAL ANDAGRICULTURE ENGINEERING BIOLOGICAL ENGINEERING

Converting to GT Components

21

Split into individual parts Converted into pipes and flow-splits

John Lumkes

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COLLEGE OF COLLEGE OF AGRICULTURAL ANDAGRICULTURE ENGINEERING BIOLOGICAL ENGINEERING

MAV Inline Simulation

John Lumkes 22

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COLLEGE OF COLLEGE OF AGRICULTURAL ANDAGRICULTURE ENGINEERING BIOLOGICAL ENGINEERING

One Piston Simulation

John Lumkes 23

Piston crank-slider input• Angle and speed defined by

main driver

• Piston stroke angle profile

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COLLEGE OF COLLEGE OF AGRICULTURAL ANDAGRICULTURE ENGINEERING BIOLOGICAL ENGINEERING

One Piston Simulation

John Lumkes 24

Check valve• Flapper disk dimensions• Spring properties

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COLLEGE OF COLLEGE OF AGRICULTURAL ANDAGRICULTURE ENGINEERING BIOLOGICAL ENGINEERING

One Piston Simulation

John Lumkes 25

On/off valve• Valve opening area• Poppet parameters

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COLLEGE OF COLLEGE OF AGRICULTURAL ANDAGRICULTURE ENGINEERING BIOLOGICAL ENGINEERING

MAV Inline Simulation

John Lumkes 26

103 bar, 500 rpm, 100% displacement

103 bar, 500 rpm, 100% displacement

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COLLEGE OF COLLEGE OF AGRICULTURAL ANDAGRICULTURE ENGINEERING BIOLOGICAL ENGINEERING

Inline Simulation Results

John Lumkes 27

Efficiency plots for 1500psi, 500 rpm• Top Left- Volumetric Efficiency• Top Right- Mechanical Efficiency• Bottom- Total Efficiency

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COLLEGE OF COLLEGE OF AGRICULTURAL ANDAGRICULTURE ENGINEERING BIOLOGICAL ENGINEERING

Next Generation MAV

• Optimal design, open-ended approach• Requirements

• One cam assembly for all pistons• Minimal gearing• Smaller physical size• Four quadrant capability

John Lumkes 28

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COLLEGE OF COLLEGE OF AGRICULTURAL ANDAGRICULTURE ENGINEERING BIOLOGICAL ENGINEERING

Radial Piston Orientation

• Benefits • Access to valves• Thru-shaft• Modular and compact design• Fewer moving parts

John Lumkes 29

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COLLEGE OF COLLEGE OF AGRICULTURAL ANDAGRICULTURE ENGINEERING BIOLOGICAL ENGINEERING

Radial Piston Orientation

John Lumkes 30

Page 31: µ Y µ v D µ o ] r& o µ ] K>> ' K& K>> ' K& 'Z/ h>dhZ > E W ... Lumk… · W o v Ç ' ( } s o À K v ] v P l o } ] v P ~W lD ^ Z ( } v v } µ v U u u l } v v } o v Ç ] U i µ

COLLEGE OF COLLEGE OF AGRICULTURAL ANDAGRICULTURE ENGINEERING BIOLOGICAL ENGINEERING

Radial Piston Orientation

John Lumkes 31

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COLLEGE OF COLLEGE OF AGRICULTURAL ANDAGRICULTURE ENGINEERING BIOLOGICAL ENGINEERING

Summary

• Tested inline unit on existing digital pump/motor test stand• Results provided proof of concept for mechanical actuation

• Modeled and simulated inline unit• Validated modeling techniques

• Model and simulate radial unit• Use simulation to determine optimal parameters

John Lumkes 32

Page 33: µ Y µ v D µ o ] r& o µ ] K>> ' K& K>> ' K& 'Z/ h>dhZ > E W ... Lumk… · W o v Ç ' ( } s o À K v ] v P l o } ] v P ~W lD ^ Z ( } v v } µ v U u u l } v v } o v Ç ] U i µ

COLLEGE OF COLLEGE OF AGRICULTURAL ANDAGRICULTURE ENGINEERING BIOLOGICAL ENGINEERING

Contact Information

John Lumkes 33

John [email protected] & Biological Engineering225 S. University St.West Lafayette, IN 47907


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Binntal-Cervandone-Veglia Mineral Liste je Gesteinstyp ... · D ] v o ] v r> ] ( º ] v v o µ v ] l v P v Ì v & µ v o o v µ ( o À } µ v o s P o ] ~

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