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Team Ecotec Efficiency

Jon Olmstead, Zach Prestegard, Chris Reek, Kurtis Mercil. Team Ecotec Efficiency. Main Project Objective. Optimize an engine on specific Ethanol Blends (E85 and E50) Meet or reduce fuel consumption with ethanol blends from base engine. % Loss of Fuel Economy From Gasoline to E85.

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Team Ecotec Efficiency

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  1. Jon Olmstead, Zach Prestegard, Chris Reek, Kurtis Mercil Team Ecotec Efficiency

  2. Main Project Objective • Optimize an engine on specific Ethanol Blends (E85 and E50) • Meet or reduce fuel consumption with ethanol blends from base engine

  3. % Loss of Fuel Economy From Gasoline to E85 The Average Loss of Fuel Economy is 26.96%

  4. Energy Density Comparison Gasoline 114,000 E50 95,050 -16.6% E85 81,800 -28.2% E100 76,100 -33.2% BTU’s/gallon of Fuel

  5. *The black line is interpolated

  6. Tools • In cylinder pressure sensor • Dynamometer • Data logging software

  7. Pistons • Left to Right: Stock pistons (9.2:1), 1st modified pistons (11.27:1), Current (12.12:1) • Calculated thermal efficiencies, Stock = 54%, Current = 58.2% 9.2:1 CR 11.27:1 CR 12.12:1 CR

  8. Engine Overview • GM 2.0 liter Ecotec, • 4-cylinder • Direct injected fuel system • Turbocharged • Dual variable camshaft • timing

  9. Optimization Steps • Increase Compression Ratio of Engine • Use Ethanol Blends to take advantage of increased compression • Recalibrate engine to be able to utilize ethanol’s properties 9.2:1 CR 11.27:1 CR 12.12:1 CR

  10. Pulkrabek, Willard W. Engineering Fundamentals of the Internal Combustion Engine. 2nd ed. Upper Saddle River: Pearson Prentice-Hall, 2004. Print.

  11. Average Results E50 vs Gasoline • 11.12% improvement in BSFC from baseline • 14.53% improvement in VSFC from baseline • 28.74% improvement in Energy Efficiency • 42.51% improvement in Torque

  12. References • "Daily Fuel Gauge Report." AAA. N.p., 12/16/2011. Web. 16 Dec 2011. <http://fuelgaugereport.aaa.com/?redirectto=http://fuelgaugereport.opisnet.com/index.asp>. • Jiang, Li, HakanYilmaz, Mark Christie, Hyung-ho Ahn, and Anna Stefanopoulou. "Optimally Controlled Flexible Fuel Vehicle." n. page. Print. • Kunz, Justin. Roberts, Courtney. Kay, Jonathan. “E85 Ethanol Efficiency in an Automotive Engine. Utilization of Direct Injection Using General Motors Ecotec Engine.” (2011). Web. 16 Nov. 2011. • Pulkrabek, Willard W. Engineering Fundamentals of the Internal Combustion Engine. 2nd ed. Upper Saddle River: Pearson Prentice-Hall, 2004. Print. • Szybist, James, Matthew Foster, Wayne R. Moore, Keith Confer, Adam Youngquist, and Robert Wagner. "Investigation of Knock Limited Compression Ratio of Ethanol Gasoline Blends." SAE International. (2010). Web. 16 Nov. 2011. • United States. U.S. Department of Energy. Fuel Economy. 2012. Web. <www.fueleconomy.gov>.

  13. Questions?

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