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Axle Temperature Control Progress Report

Axle Temperature Control Progress Report. February 28, 2011. Team Members Lee Zimmerman Boun Sinvongsa Emery Frey Mike Erwin Industry Advisor Dave Ruuhela , Daimler Trucks North America Academic Advisor Lemmy Meekisho. Introduction.

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Axle Temperature Control Progress Report

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  1. Axle Temperature Control Progress Report February 28, 2011 Team Members Lee Zimmerman BounSinvongsa Emery Frey Mike Erwin Industry Advisor Dave Ruuhela, Daimler Trucks North America Academic Advisor LemmyMeekisho

  2. Introduction 2.25% of energy required to operate a truck at a steady highway speed is lost in the drive train Increasing the lubricant fluid temp reduces the energy loss A 1% improvement in efficiency would save each truck $800 per year

  3. Final PDS Summary

  4. Gantt Chart

  5. External Search Toyota Prius exhaust gas exchanger PADI Inc. Insulation Jackets E.J. Bowman Heat Exchangers Wolverine Engine Oil Heaters

  6. Internal Search • Heat Exchanger • Exhaust Gas or Engine Coolant Heat Sources • Electric Heater • Heating Element Inside Differential • Passive Insulation • Active Insulation • Insulation with a heat management solution

  7. Design Evaluation

  8. Risk Evaluation Design is highly dependant on assumptions and difficult to model. Testing of assumptions will be key. Reliability and cost considerations make more complex designs less feasible

  9. Progress on Detailed Design To get a first approximation of insulation effectiveness, a simplified spherical model was used.

  10. Calculations

  11. Calculations

  12. Controlled Cooling If insulation works as well as expected the fluid would potentially overheat on hot days The fluid temperature could be maintained in the specified range by controlling forced convection

  13. Forced Convection Control A valve/flap mechanism would provide temperature control with minimal power use.

  14. Conclusion While the insulation is expected be sufficient for warming the fluid, a cooling system will need to be designed Future testing on an operating axle will provide information on the most effective locations for the cooling system and confirm the effectiveness of insulation

  15. Questions?

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