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Efficiency Enhancement of Pegasus Lawnmower Engine: Project Update

Follow the progress of the project involving insulation, gas system cleaning, and combustion efficiency testing of a lawnmower engine. Detailed observations, conclusions, solutions, and references provided.

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Efficiency Enhancement of Pegasus Lawnmower Engine: Project Update

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  1. Project Design and Management IIPegasus II(Measurement and Increment of the Efficiency of Pegasus Lawnmower Engine)Robert CrumrineBen KnerrRijeshPradhan

  2. Progress after mid term • Insulation installed • Replaced old wood with new • Cleaned the gas transfer pipes • Cleaned out the lower manifold • Gasket installed Insulation on the lower manifold and the cylinder

  3. Testing 2 • Saturday (APRIL 2nd) • Conditions : Partly cloudy with light drizzles • After cleaning the gasifier the wood was lit • Once the flame was hot enough we attached the blower at different locations to see the output Combustion of wood

  4. Observations Blower at filter outlet • Reached maximum temperature in 15 minutes • Exact temperature undetermined but evidence of good temperature • Excellent discharge flow white smoke Output when blower was placed closer to gasifier

  5. Observations Output after full assembly • Air leaks checked and fixed • Discharge flow decreased, white smoke • Temperature decreased compared to previous assembly but maximum temperature measured at 980 C • Failed to achieve combustible gases • Without the blower the flame comes out of the inlet port Output after completion of full assembly

  6. Conclusions • Insulation caused temperature to reach the optimal value • Presence of white smoke indicates an incombustible gas • Flame is positioned too close to inlet ports • Insulation is currently unprotected and flammable upon direct contact Air inlet ports

  7. Solutions • Inlet ports need to be blocked and an inlet manifold should be installed through access cover • Upgrade filter to allow air to cross through efficiently and remove excess water • Continue to experiment with blower location to improve flow • Apply a non-flammable paste to the insulation Suction of blower

  8. Appendix A: Ghantt Chart

  9. References • 1. La Fontaine, Harry; Zimmerman, F.P. Construction of a Simplified Wood Gas Generator for Fueling Internal Combustion Engines in a Petroleum Emergency. 2nd ed. Golden, CO: The Biomass Energy Foundation Press. (1) • 2. Papworth , and Skov. Driving on Wood. The Biomass Energy Foundation Press, 2006. • 3. Das. “The Up-Downdraft Gasifier.” Woodgas. Web. http://www.woodgas.com/history9.htm • 4.Vinod. Volvo 240 Converted to run on Wood Gas. Automotto, 29 July 2010. Web. http://www.automotto.org/entry/duch-john-converts-his-volvo-240-to-run-on-wood-gas • 5.Lynch, Eric. Biomass Gasification. What is it? Can it be used now?. Surfers without borders, 21 Jan. 2006. http://www.surferswithoutborders.org/Resources_files/Biomass%20Gasification%20Presentation.pdf

  10. Questions???????

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