CHOIX D’UNE POMPECHOIX D’UNE POMPE

Copyright Eaton Hydraulics 2000Copyright Eaton Hydraulics 2000

Steve Skinner, Eaton Hydraulics, Havant, UKSteve Skinner, Eaton Hydraulics, Havant, UK

Displacement Displacement

PUMP SELECTION FACTORSPUMP SELECTION FACTORS

FLOWFLOW

FLOW SIZE & DRIVE SPEEDFLOW SIZE & DRIVE SPEED

PUMP FLOW RATEPUMP FLOW RATE

Europe - 1000 / 1500 RPMEurope - 1000 / 1500 RPM

America - 1200 / 1800 RPMAmerica - 1200 / 1800 RPM

Mobile - 1200 2500 RPMMobile - 1200 2500 RPM

PUMP DISPLACEMENTPUMP DISPLACEMENT

1 revolution1 revolution

1 revolution1 revolution

PUMP DISPLACEMENTPUMP DISPLACEMENT

1 revolution1 revolution

PUMP DISPLACEMENTPUMP DISPLACEMENT

1 revolution1 revolution

PUMP DISPLACEMENTPUMP DISPLACEMENT

1 revolution1 revolution

PUMP DISPLACEMENTPUMP DISPLACEMENT

1 revolution1 revolution

PUMP DISPLACEMENTPUMP DISPLACEMENT

volume cm3volume cm3

SIZE (displacement) = cm3 / revSIZE (displacement) = cm3 / rev

1 revolution1 revolution

PUMP DISPLACEMENTPUMP DISPLACEMENT

SPEED = rev / minSPEED = rev / min

FLOW = DISPLACEMENT x SPEEDFLOW = DISPLACEMENT x SPEED

litres / min =litres / min =cm3 / rev x rev / mincm3 / rev x rev / min

10001000

FLOW = litres / minFLOW = litres / min

PUMP FLOW RATE CALCULATIONPUMP FLOW RATE CALCULATION

DISPLACEMENT = cm3 / revDISPLACEMENT = cm3 / rev

Displacement Displacement Maximum pressure capability Maximum pressure capability

PUMP SELECTION FACTORSPUMP SELECTION FACTORS

PUMP PRESSURE CAPABILITYPUMP PRESSURE CAPABILITY

PMAXPMAX

PUMP PRESSURE CAPABILITYPUMP PRESSURE CAPABILITY

CONTINUOUSCONTINUOUS

INTERMITTENTINTERMITTENT

PEAKPEAK

tt

PMAXPMAX

TYPICALLY: INTERMITTENT = 6 sec / minTYPICALLY: INTERMITTENT = 6 sec / min

PEAK = 50 mSPEAK = 50 mS

Displacement Displacement Maximum pressure capability Maximum pressure capability Fixed / variable displacement Fixed / variable displacement

PUMP SELECTION FACTORSPUMP SELECTION FACTORS

FIXED / VARIABLE DISPLACEMENTFIXED / VARIABLE DISPLACEMENT

N N

FLOWFLOW FLOWFLOW

Displacement Displacement Maximum pressure capability Maximum pressure capability Fixed / variable displacement Fixed / variable displacement Open loop / closed loop Open loop / closed loop

PUMP SELECTION FACTORSPUMP SELECTION FACTORS

OPEN LOOP TRANSMISSIONOPEN LOOP TRANSMISSION

OPEN LOOP TRANSMISSIONOPEN LOOP TRANSMISSION

CLOSED LOOP TRANSMISSIONCLOSED LOOP TRANSMISSION

CLOSED LOOP TRANSMISSIONCLOSED LOOP TRANSMISSION

CLOSED LOOP TRANSMISSIONCLOSED LOOP TRANSMISSION

Displacement Displacement Maximum pressure capability Maximum pressure capability Fixed / variable displacement Fixed / variable displacement Open loop / closed loop Open loop / closed loop Drive capability Drive capability

PUMP SELECTION FACTORSPUMP SELECTION FACTORS

Q NQ N

NN

QQ

DRIVE SPEED - INDUSTRIAL APPLICATIONSDRIVE SPEED - INDUSTRIAL APPLICATIONS

1200 RPM 60 Hz1800 RPM1200 RPM 60 Hz1800 RPM

1000 RPM 50 Hz1500 RPM1000 RPM 50 Hz1500 RPM

MaxMaxMinMin

RPM

DRIVE SPEED - MOBILE APPLICATIONSDRIVE SPEED - MOBILE APPLICATIONS

INDIRECT DRIVEINDIRECT DRIVE

Displacement Displacement Maximum pressure capability Maximum pressure capability Fixed / variable displacement Fixed / variable displacement Open loop / closed loop Open loop / closed loop Drive capability Drive capability Noise level Noise level

PUMP SELECTION FACTORSPUMP SELECTION FACTORS

DISPLACEMENTDISPLACEMENT

DRIVE SPEEDDRIVE SPEED

INT. GEARINT. GEAR

VANEVANE PISTONPISTON EXT. GEAR

EXT. GEAR

TYPETYPE

FIXEDFIXED VARIABLEVARIABLECONSTRUCTIONCONSTRUCTION

NOISE LEVELNOISE LEVEL

FACTORS AFFECTING PUMP NOISE LEVELFACTORS AFFECTING PUMP NOISE LEVEL

PRESSUREPRESSURE

Displacement Displacement Maximum pressure capability Maximum pressure capability Fixed / variable displacement Fixed / variable displacement Open loop / closed loop Open loop / closed loop Drive capability Drive capability Noise level Noise level Contamination sensitivity Contamination sensitivity

PUMP SELECTION FACTORSPUMP SELECTION FACTORS

20/1820/18

19/1719/17

18/1618/16

17/1517/15

16/1416/14

100100 200200 300300

VARIABLE PISTON

VARIABLE PISTON

FIXED VANE / GEAR

FIXED VANE / GEAR

VARIABLE VANE / FIXED PISTON

VARIABLE VANE / FIXED PISTON

ISO

CL

EA

NL

INE

SS

LE

VE

LIS

O C

LE

AN

LIN

ES

S L

EV

EL

PRESSURE (bar)PRESSURE (bar)

PUMP CLEANLINESS REQUIREMENTSPUMP CLEANLINESS REQUIREMENTS

Displacement Displacement Maximum pressure capability Maximum pressure capability Fixed / variable displacement Fixed / variable displacement Open loop / closed loop Open loop / closed loop Drive capability Drive capability Noise level Noise level Contamination sensitivity Contamination sensitivity Overall efficiency Overall efficiency

PUMP SELECTION FACTORSPUMP SELECTION FACTORS

PIPELOSSES

PIPELOSSES

POWERSUPPLYLOSSES

POWERSUPPLYLOSSES

CONTROLLOSSES

CONTROLLOSSES

ACTUATORLOSSES

ACTUATORLOSSES

PUMPLOSSES

PUMPLOSSES

POWERSUPPLY CONTROL ACTUATOR

MECHANICALPOWER IN

MECHANICALPOWER IN

MECHANICALPOWER OUT

MECHANICALPOWER OUT

HYDRAULICPOWER

HYDRAULICPOWER

HYDRAULICPOWER

HYDRAULICPOWER

AV

AIL

AB

LE

PO

WE

RA

VA

ILA

BL

E P

OW

ER

INPUTINPUT

OUTPUTOUTPUT

HEATHEAT

PUMP EFFICIENCY vs SYSTEM EFFICIENCYPUMP EFFICIENCY vs SYSTEM EFFICIENCY

PUMPLOSSESPUMP

LOSSESFLUID

FRICTIONFLUID

FRICTION==

FLUID FRICTION LOSSESFLUID FRICTION LOSSES

PUMPLOSSESPUMP

LOSSESFLUID

FRICTIONFLUID

FRICTIONMECHANICAL

FRICTIONMECHANICAL

FRICTION== ++

MECHANICAL FRICTION LOSSESMECHANICAL FRICTION LOSSES

PUMPLOSSESPUMP

LOSSESFLUID

FRICTIONFLUID

FRICTIONMECHANICAL

FRICTIONMECHANICAL

FRICTION SLIPPAGESLIPPAGE== ++ ++

SLIPPAGESLIPPAGE

00

1010

2020

3030

4040

5050

6060

7070

8080

9090

100100

5050 100100 150150 200200 250250 300300 350350

barbar

Eff

icie

ncy

Eff

icie

ncy

TYPICAL PUMP OVERALL EFFICIENCYTYPICAL PUMP OVERALL EFFICIENCY

100 kW100 kW

80 kW80 kW

TYPICAL VANE PUMP EFFICIENCYTYPICAL VANE PUMP EFFICIENCY

100 kW100 kW

85 kW85 kW

TYPICAL GEAR PUMP EFFICIENCYTYPICAL GEAR PUMP EFFICIENCY

100 kW100 kW

90 kW90 kW

TYPICAL PISTON PUMP EFFICIENCYTYPICAL PISTON PUMP EFFICIENCY

Displacement Displacement Maximum pressure capability Maximum pressure capability Fixed / variable displacement Fixed / variable displacement Open loop / closed loop Open loop / closed loop Drive capability Drive capability Noise level Noise level Contamination sensitivity Contamination sensitivity Overall efficiency Overall efficiency Life expectancy Life expectancy

PUMP SELECTION FACTORSPUMP SELECTION FACTORS

MINIMUM

GEARGEARVANEVANE

PISTONPISTON

EF

FIC

IEN

CY

EF

FIC

IEN

CY

TIMETIMEGEARPUMPLIFE

GEARPUMPLIFE

VANEPUMPLIFE

VANEPUMPLIFE

PISTONPUMPLIFE

PISTONPUMPLIFE

PUMP LIFE PUMP LIFE

Displacement Displacement Maximum pressure capability Maximum pressure capability Fixed / variable displacement Fixed / variable displacement Open loop / closed loop Open loop / closed loop Drive capability Drive capability Noise level Noise level Contamination sensitivity Contamination sensitivity Overall efficiency Overall efficiency Life expectancy Life expectancy Serviceability Serviceability

PUMP SELECTION FACTORSPUMP SELECTION FACTORS

PUMP SERVICEABILITYPUMP SERVICEABILITY

GEARGEAR VANEVANE PISTONPISTON

PUMP SERVICEABILITYPUMP SERVICEABILITY

GEARGEAR VANEVANE PISTONPISTON

PUMP SERVICEABILITYPUMP SERVICEABILITY

GEARGEAR VANEVANE PISTONPISTON

PUMP SERVICEABILITYPUMP SERVICEABILITY

GEARGEAR VANEVANE PISTONPISTON

PUMP SERVICEABILITYPUMP SERVICEABILITY

GEARGEAR VANEVANE PISTONPISTON

PUMP SERVICEABILITYPUMP SERVICEABILITY

GEARGEAR VANEVANE PISTONPISTON

PUMP SERVICEABILITYPUMP SERVICEABILITY

GEARGEAR VANEVANE PISTONPISTON

PUMP SERVICEABILITYPUMP SERVICEABILITY

GEARGEAR VANEVANE PISTONPISTON

PUMP SERVICEABILITYPUMP SERVICEABILITY

GEARGEAR VANEVANE PISTONPISTON

PUMP SERVICEABILITYPUMP SERVICEABILITY

GEARGEAR VANEVANE PISTONPISTON

PUMP SERVICEABILITYPUMP SERVICEABILITY

GEARGEAR VANEVANE PISTONPISTON

PUMP SERVICEABILITYPUMP SERVICEABILITY

GEARGEAR VANEVANE PISTONPISTON

PUMP SERVICEABILITYPUMP SERVICEABILITY

GEARGEAR VANEVANE PISTONPISTON

PUMP SERVICEABILITYPUMP SERVICEABILITY

GEARGEAR VANEVANE PISTONPISTON

PUMP SERVICEABILITYPUMP SERVICEABILITY

GEARGEAR VANEVANE PISTONPISTON

PUMP SERVICEABILITYPUMP SERVICEABILITY

GEARGEAR VANEVANE PISTONPISTON

PUMP SERVICEABILITYPUMP SERVICEABILITY

GEARGEAR VANEVANE PISTONPISTON

PUMP SERVICEABILITYPUMP SERVICEABILITY

GEARGEAR VANEVANE PISTONPISTON

PUMP SERVICEABILITYPUMP SERVICEABILITY

GEARGEAR VANEVANE PISTONPISTON

PUMP SERVICEABILITYPUMP SERVICEABILITY

GEARGEAR VANEVANE PISTONPISTON

PUMP SERVICEABILITYPUMP SERVICEABILITY

GEARGEAR VANEVANE PISTONPISTON

PUMP SERVICEABILITYPUMP SERVICEABILITY

GEARGEAR VANEVANE PISTONPISTON

PUMP SERVICEABILITYPUMP SERVICEABILITY

GEARGEAR VANEVANE PISTONPISTON

PUMP SERVICEABILITYPUMP SERVICEABILITY

GEARGEAR VANEVANE PISTONPISTON

Displacement Displacement Maximum pressure capability Maximum pressure capability Fixed / variable displacement Fixed / variable displacement Open loop / closed loop Open loop / closed loop Drive capability Drive capability Noise level Noise level Contamination sensitivity Contamination sensitivity Overall efficiency Overall efficiency Life expectancy Life expectancy Serviceability Serviceability Size, shape & weight Size, shape & weight

PUMP SELECTION FACTORSPUMP SELECTION FACTORS

COMPARATIVE SIZES OF 100 cm3/r PUMPSCOMPARATIVE SIZES OF 100 cm3/r PUMPS

FIXED DISPLACEMENTFIXED DISPLACEMENT VARIABLE DISPLACEMENTVARIABLE DISPLACEMENT

GEARGEAR

PISTONPISTON

VANEVANE

COMPARATIVE WEIGHTS OF 100 cm3/r PUMPSCOMPARATIVE WEIGHTS OF 100 cm3/r PUMPS

FIXED DISPLACEMENTFIXED DISPLACEMENT VARIABLE DISPLACEMENTVARIABLE DISPLACEMENT

GEARGEAR

PISTONPISTON

VANEVANE

55kg

33kg

13kg

45kg

34kg

Displacement Displacement Maximum pressure capability Maximum pressure capability Fixed / variable displacement Fixed / variable displacement Open loop / closed loop Open loop / closed loop Drive capability Drive capability Noise level Noise level Contamination sensitivity Contamination sensitivity Overall efficiency Overall efficiency Life expectancy Life expectancy Serviceability ServiceabilitySize, shape & weightSize, shape & weight Fluid compatibility Fluid compatibility

PUMP SELECTION FACTORSPUMP SELECTION FACTORS

FLUID TYPEFLUID TYPE

DE-RATING (Pressure / Drive Speed)DE-RATING (Pressure / Drive Speed)

PUMP / FLUID COMPATIBILITYPUMP / FLUID COMPATIBILITY

Displacement Displacement Maximum pressure capability Maximum pressure capability Fixed / variable displacement Fixed / variable displacement Open loop / closed loop Open loop / closed loop Drive capability Drive capability Noise level Noise level Contamination sensitivity Contamination sensitivity Overall efficiency Overall efficiency Life expectancy Life expectancy Serviceability ServiceabilitySize, shape & weightSize, shape & weight Fluid compatibility Fluid compatibility Cost Cost

PUMP SELECTION FACTORSPUMP SELECTION FACTORS

00 5050 100100 150150 200200 250250 300300 350350

DISPLACEMENT ( cm3 / r )DISPLACEMENT ( cm3 / r )

PR

ICE

PR

ICE

EXTERNAL GEAREXTERNAL GEAR

FIXED VANEFIXED VANE

VARIABLE VANEVARIABLE VANE

INTERNAL GEARINTERNAL GEAR

VARIABLE PISTONVARIABLE PISTON

PUMP COST COMPARISONPUMP COST COMPARISON

Displacement Displacement Maximum pressure capability Maximum pressure capability Fixed / variable displacement Fixed / variable displacement Open loop / closed loop Open loop / closed loop Drive capability Drive capability Noise level Noise level Contamination sensitivity Contamination sensitivity Overall efficiency Overall efficiency Life expectancy Life expectancy Serviceability ServiceabilitySize, shape & weightSize, shape & weight Fluid compatibility Fluid compatibility Cost Cost

PUMP SELECTION FACTORSPUMP SELECTION FACTORS

PUMP SELECTION FACTORSPUMP SELECTION FACTORS

Copyright Eaton Hydraulics 2000Copyright Eaton Hydraulics 2000

Steve Skinner, Eaton Hydraulics, Havant, UKSteve Skinner, Eaton Hydraulics, Havant, UK