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Group 9A: Jerry Dutreuil Joshua Guerra Matt Grywalski

E85 Conversion Kit. Group 9A: Jerry Dutreuil Joshua Guerra Matt Grywalski William Mehnert. Overview. Project Objectives Phase Overview Phase 1 Phase 2 Bill of Materials Component Overview Software Flow Chart Program Logic

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Group 9A: Jerry Dutreuil Joshua Guerra Matt Grywalski

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  1. E85 Conversion Kit Group 9A: Jerry Dutreuil Joshua Guerra Matt Grywalski William Mehnert

  2. Overview • Project Objectives • Phase Overview • Phase 1 • Phase 2 • Bill of Materials • Component Overview • Software Flow Chart • Program Logic • Test Bed • Nugget Chart • Conclusion

  3. Project Objective • Convert a gasoline engine to operate on E85 without sacrificing fuel consumption, increasing performance and reducing emissions • Provide a control system unit to manage the engine

  4. Evaluation of design approaches (different engines) Research of existing products Ignition timing is most important aspect of performance Phase 1 Overview

  5. Phase 2 Overview • Areas of Technical Analysis • Ignition Timing • Explosion Limits • Emissions • Power/Torque

  6. Total = $3,279.50 Bill of Materials

  7. Component Overview • Megasquirt – Standalone ECM • Allows for full programmability and control of all engine parameters • Allows for development of control algorithms

  8. Component Overview • EGT Sensor • Detects exhaust gas temperature (Chamber temperature) Oxygen Sensor, wideband -Detects air/fuel ratio

  9. Component Overview • Flex Fuel Sensor • Detects ethanol content in the fuel

  10. Software Flow Chart FFS Fuel ECM Injectors Ignition O2 EGT Exhaust Gases

  11. Program Logic • Read FFS to determine ethanol content • Trim fuel table and timing table to compensate • Read Oxygen Sensor • Trim fuel values to bring values back to stoichiometric or towards desired target • Read EGT sensor • Trim timing values to adjust EGT temperatures to acceptable range and reduce emissions. • Check throttle position • Adjust timing and fuel lookup tables to create power as demanded.

  12. Test Bed • Track of dyno – 24”-96” • Track of current SAE car - ~62” • Used to tune vehicle for power, torque, and emissions • 5 Gas emissions testing

  13. Nugget Chart

  14. Conclusion • With ignition timing, we will control the combustion in the cylinder chamber • We will provide a kit that will enable someone to run on E85/gasoline blend • The testing will consist of two identical runs; one with gasoline and one with E85 • The results will be directly compared to determine to the differences in the theoretical values vs. the actual values.

  15. Thank you • Any Questions?

  16. Reference • www.change2E85.com • www.megasquirt.info • www.flextek.com • www.e85fuel.com • www.eere.energy.gov • www.diablosport.com • www.e85vehicles.com • www.e85prices.com • www.aa1car.com • http://www.eng-tips.com/viewthread.cfm?qid=33615 • http://www.engineeringtoolbox.com/explosive-concentration-limits-d_423.html • http://www.allpar.com/fix/EPAMethods.html • http://www.techedge.com.au/vehicle/wbo2/wblambda.htm • Effect of Advanced injection timing on emission characteristics of diesel engine running on natural gas • Effect of Ethanol-gasoline blends on engine performance and exhaust emissions in different compression ratio • The effects of ethanol-unleaded gasoline blends and ignition timing on engine performance and exhaust emissions

  17. Chemical Equilibrium • Gasoline • C8H18+12.5(O2+3.76N2)  CO2+3H2O+12.5(3.76N2) • Ethanol • C2H5OH+3(O2+3.76N2)  2CO2+3H2O+3(3.76N2)

  18. Formulas Used

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