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Introduction, August 2012

Manual Component Sizing. Introduction, May 2012. Introduction, August 2012. Agenda. Introduction Calculation steps of manual component sizing Exercise Further informations. Wheeled Vehicles. Manual Component Sizing. You must know driveline requirements . Tracked Vehicles.

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Introduction, August 2012

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  1. Manual Component Sizing Introduction, May 2012 Introduction, August 2012

  2. Agenda • Introduction • Calculation steps of manual component sizing • Exercise • Further informations

  3. Wheeled Vehicles Manual Component Sizing You must know driveline requirements .... Tracked Vehicles

  4. Manual Component Sizing … before you can size a HydroStatic Transmission • The customer has to define all the Vehicle and Driveline Requirements before it‘s possible to size a Hydro Static Transmission, short: HST • Vehicle Weight (un-/loaded) • Engine Power and Speed • Static and Dynamic Wheel Radius • Working and Transport Speed • Gradeability at Transport Speed • Pull Force • Auxiliary Pump(s) • Final Gear Supplier and available ratios • Limitations on Pressure • Duty Cycle

  5. Manual Component Sizing Required Pull Force=Tractive Force+.....

  6. Manual Component Sizing Required Pull Force=Tractive Force+Rolling Resistance+..... • Rolling Resistance • FRR =m × g × fRR FRR = Rolling Resistance[N] m = weight [kg] g = gravity [9,81 m/s2] fRR = rolling coefficient [-] _________________________________________________ Rolling Resistance fRR (rubber tyre) Wet Soil/Mud 0,20 Loose Soil 0,12 Grassy Field/Dry Cropland 0,08 Packed Soil 0,05 Dry Asphalt/Concrete Road 0,02

  7. Manual Component Sizing Required Pull Force=Tractive Force+RollingResistance+Gradeability

  8. Manual Component Sizing Corner Power

  9. Vg × ∆p × ŋmech.motor 20∏ rev rated speed PC MF = 9550 Manual Component Sizing Corner Power definiton for Fixed and Variable Motor X X

  10. Manual Component Sizing Corner Power of Vehicle • Once again ..... • Corner Power is the multiplication of maximum • pull force with the maximum vehicle speed.

  11. Manual Component Sizing Overview for Motor Corner Power Motor Corner Power (CP) > required Application Corner Power (CP) * to be reflected of the H1 Pump working pressure capabilities!

  12. Manual Component Sizing Motor Torque and Wheel Torque * * also Sprocket (e.g. Dozer) or Drum (e. g. Roller) radius

  13. Manual Component Sizing Final Gear Ratio and Maximum Motor Speed

  14. Manual Component Sizing Pump Sizing • Most of Vehicles using as „State of the Art“ mainly Variable Bent Axis Motor‘s to fulfill OEM-Demand‘s regarding selectable drive modes like this • Wheeled Vehicle • Working Speed in a range of 5,5-7,5 km/h • Transport Speed in a range of 20, 25,35 and 40 km/h • Tracked Vehicle • Working Speed up to 10-12 km/h • Transport Speed 20 up to 40 km/h • For this reason it‘s necessary to define the size of • Variable Piston Pump as well in the following way …

  15. Manual Component Sizing Pump Sizing

  16. Manual Component Sizing Pump Sizing Your calculated pump size must be compared what we have available today in Series H1P and Series 90 Awareness! Selected pump size in conjunction with released working pressure (see table) must be matched with motor corner power. Re-check it‘s a must! Have a care!

  17. Manual Component Sizing Minimum Displacement at maximum Vehicle Speed If you has selected the pump you can calculate the required minimum displacement for the motor at transport speed and make a re-check again for the requested working speed …..

  18. Vehicle Corner Power higher compared w/ Motor Corner Power • What can we do in such case??? • (Remember: H1B250 685 kW at 450 bar as example) • Two-speed Gear Shift  Shift on Stop (simple solution) • Two-speed Power Shift Gear  Shift on Fly* • Two Motor System  Shift on Fly (0°-degree capability w/ clutch)* • Remark * • higher demand for the Control System of Pump & Motor • compensation/synchronization of HST during shifting required

  19. Manual Component Sizing Application: Wheel-Loader Technical Data: • WheelRadius 0,487 m • Power forPropel System 49 kW • atenginespeed 2200 rev/min Customer Requirements: • TractiveForce 44500 N • Working Speed 6 km/h • Transport Speed 20 km/h

  20. Manual Component Sizing Corner Power of Vehicle

  21. Manual Component Sizing Motor Selection Motor Corner Power (CP) > required Application Corner Power (CP=306 kW) * to be reflected of the H1 Pump working pressure capabilities!

  22. Manual Component Sizing Motor Torque

  23. Manual Component Sizing Wheel Torque

  24. Manual Component Sizing Final Gear Ratio

  25. Manual Component Sizing Maximum Motor Speed

  26. Manual Component Sizing Pump Size Selection

  27. Manual Component Sizing Pump Selection Your calculated pump size must be compared what we have available today in Series H1P and Series 90 Awareness! Selected pump size in conjunction with released working pressure (see table) must be matched with motor corner power. Re-check it‘s a must! Have a care!

  28. Manual Component Sizing New Motor Selection Motor Corner Power (CP) > required Application Corner Power (CP=306 kW) * to be reflected of the H1 Pump working pressure capabilities!

  29. Manual Component Sizing Motor Torque

  30. Manual Component Sizing Final Gear Ratio

  31. Manual Component Sizing Maximum Motor Speed

  32. Manual Component Sizing Revise Maximum Motor Speed Maximum Motor Speed (5467 rev/min) > Rated Speed (5300 rev/min)? Select a larger motor, here: H1B110 * to be reflected of the H1 Pump working pressure capabilities!

  33. Manual Component Sizing Motor Torque

  34. Manual Component Sizing Final Gear Ratio

  35. Manual Component Sizing Final Gear Ratio

  36. Manual Component Sizing Maximum Motor Speed

  37. Manual Component Sizing Revise Maximum Motor Speed Maximum Motor Speed (5467 rev/min) > Rated Speed (5300 rev/min)? Select a larger motor, here: H1B110 * to be reflected of the H1 Pump working pressure capabilities!

  38. Manual Component Sizing Pump Size Selection

  39. Manual Component Sizing Pump Selection Your calculated pump size must be compared what we have available today in Series H1P and Series 90 Awareness! Selected pump size in conjunction with released working pressure (see table) must be matched with motor corner power. Re-check it‘s a must! Have a care!

  40. Manual Component Sizing Minimum Displacement at maximum Vehicle Speed

  41. Manual Component Sizing Maximum Working Speed

  42. Manual Component Sizing Further Information Link to Navigator > Sales Propel > Subsystems Propel • Further sizing information sorted by application

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