1. CHOIX D’UNE POMPE Copyright  Eaton Hydraulics 2000 Steve Skinner, Eaton Hydraulics, Havant, UK

3. FLOW  SIZE & DRIVE SPEED PUMP FLOW RATE America - 1200 / 1800 RPM Mobile - 1200  2500 RPM FLOW Europe - 1000 / 1500 RPM

4. PUMP DISPLACEMENT 1 revolution

5. PUMP DISPLACEMENT 1 revolution

6. PUMP DISPLACEMENT 1 revolution

7. PUMP DISPLACEMENT 1 revolution

8. PUMP DISPLACEMENT 1 revolution

9. PUMP DISPLACEMENT 1 revolution

10. volume cm 3 SIZE (displacement) = cm 3 / rev PUMP DISPLACEMENT 1 revolution

11. FLOW = DISPLACEMENT x SPEED PUMP FLOW RATE CALCULATION SPEED = rev / min litres / min = cm 3 / rev x rev / min 1000 FLOW = litres / min DISPLACEMENT = cm 3 / rev

13. PUMP PRESSURE CAPABILITY

14. PUMP PRESSURE CAPABILITY  CONTINUOUS INTERMITTENT PEAK P MAX TYPICALLY: INTERMITTENT = 6 sec / min PEAK = 50 mS P MAX t

16. FIXED / VARIABLE DISPLACEMENT N N FLOW FLOW

18. OPEN LOOP TRANSMISSION

19. OPEN LOOP TRANSMISSION

20. CLOSED LOOP TRANSMISSION

21. CLOSED LOOP TRANSMISSION

22. CLOSED LOOP TRANSMISSION

24. DRIVE SPEED - INDUSTRIAL APPLICATIONS 1200 RPM 60 Hz 1800 RPM 1000 RPM 50 Hz 1500 RPM Q  N N Q

25. Max Min RPM DRIVE SPEED - MOBILE APPLICATIONS

26. INDIRECT DRIVE

28. NOISE LEVEL FACTORS AFFECTING PUMP NOISE LEVEL DISPLACEMENT DRIVE SPEED INT. GEAR VANE PISTON EXT. GEAR TYPE FIXED VARIABLE CONSTRUCTION PRESSURE

30. 20/18 19/17 18/16 17/15 16/14 100 200 300 ISO CLEANLINESS LEVEL PRESSURE (bar) PUMP CLEANLINESS REQUIREMENTS VARIABLE PISTON FIXED VANE / GEAR VARIABLE VANE / FIXED PISTON

32. POWER SUPPLY CONTROL ACTUATOR MECHANICAL POWER IN MECHANICAL POWER OUT HYDRAULIC POWER HYDRAULIC POWER AVAILABLE POWER PUMP EFFICIENCY vs SYSTEM EFFICIENCY PIPE LOSSES POWER SUPPLY LOSSES CONTROL LOSSES ACTUATOR LOSSES PUMP LOSSES INPUT OUTPUT HEAT

33. PUMP LOSSES FLUID FRICTION = FLUID FRICTION LOSSES

34. PUMP LOSSES FLUID FRICTION MECHANICAL FRICTION = + MECHANICAL FRICTION LOSSES

35. PUMP LOSSES FLUID FRICTION MECHANICAL FRICTION SLIPPAGE = + + SLIPPAGE

36. 0 10 20 30 40 50 60 70 80 90 100 50 100 150 200 250 300 350 bar Efficiency TYPICAL PUMP OVERALL EFFICIENCY

37. TYPICAL VANE PUMP EFFICIENCY 100 kW 80 kW

38. TYPICAL GEAR PUMP EFFICIENCY 100 kW 85 kW

39. TYPICAL PISTON PUMP EFFICIENCY 100 kW 90 kW

41. EFFICIENCY TIME PUMP LIFE MINIMUM GEAR VANE PISTON GEAR PUMP LIFE VANE PUMP LIFE PISTON PUMP LIFE

43. PUMP SERVICEABILITY GEAR VANE PISTON

44. PUMP SERVICEABILITY GEAR VANE PISTON

45. PUMP SERVICEABILITY GEAR VANE PISTON

46. PUMP SERVICEABILITY GEAR VANE PISTON

47. PUMP SERVICEABILITY GEAR VANE PISTON

48. PUMP SERVICEABILITY GEAR VANE PISTON

49. PUMP SERVICEABILITY GEAR VANE PISTON

50. PUMP SERVICEABILITY GEAR VANE PISTON

51. PUMP SERVICEABILITY GEAR VANE PISTON

52. PUMP SERVICEABILITY GEAR VANE PISTON

53. PUMP SERVICEABILITY GEAR VANE PISTON

54. PUMP SERVICEABILITY GEAR VANE PISTON

55. PUMP SERVICEABILITY GEAR VANE PISTON

56. PUMP SERVICEABILITY GEAR VANE PISTON

57. PUMP SERVICEABILITY GEAR VANE PISTON

58. PUMP SERVICEABILITY GEAR VANE PISTON

59. PUMP SERVICEABILITY GEAR VANE PISTON

60. PUMP SERVICEABILITY GEAR VANE PISTON

61. PUMP SERVICEABILITY GEAR VANE PISTON

62. PUMP SERVICEABILITY GEAR VANE PISTON

63. PUMP SERVICEABILITY GEAR VANE PISTON

64. PUMP SERVICEABILITY GEAR VANE PISTON

65. PUMP SERVICEABILITY GEAR VANE PISTON

66. PUMP SERVICEABILITY GEAR VANE PISTON

68. COMPARATIVE SIZES OF 100 cm 3 /r PUMPS FIXED DISPLACEMENT VARIABLE DISPLACEMENT GEAR PISTON VANE

69. COMPARATIVE WEIGHTS OF 100 cm 3 /r PUMPS FIXED DISPLACEMENT VARIABLE DISPLACEMENT GEAR PISTON VANE 13 kg 55 kg 33 kg 45 kg 34 kg

71. FLUID TYPE DE-RATING (Pressure / Drive Speed) PUMP / FLUID COMPATIBILITY

73. 0 50 100 150 200 250 300 350 DISPLACEMENT ( cm 3 / r ) PRICE PUMP COST COMPARISON EXTERNAL GEAR FIXED VANE VARIABLE VANE INTERNAL GEAR VARIABLE PISTON

75. PUMP SELECTION FACTORS Copyright  Eaton Hydraulics 2000 Steve Skinner, Eaton Hydraulics, Havant, UK