Direct injection system for a two stroke engine

Examensarbete för masterexamen

Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.12380/149154
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Type: Examensarbete för masterexamen
Master Thesis
Title: Direct injection system for a two stroke engine
Authors: Trejo, Jose Rodolfo I. Cervantes
Abstract: Direct injection is becoming an important option to further optimize internal combustion engines. In the case of two stroke engines, the opportunity of dramatically reducing the HC emissions by almost eliminating short circuit while scavenging, makes this system even more attractive. For small two stroke engines, like the ones used to power chain saw tools, the need of a high pressure fuel pump (its size and electricity needs) makes that the use of direct injection becomes not feasible. By using a self pressurized (boosted) direct injector, the opportunity of using direct injection opens for these small engines since a high pressure pump is not needed. The Evinrude E-TEC™ outboard engine uses a direct injection system which makes use of this kind of injectors. The Evinrude E-TEC™ outboard engine is analyzed in a test rig to find out the characteristics of the injector and the combustion modes the engine runs at different speeds and loads. The emissions of the engine are measured, along with the power, speed, combustion chamber pressure trace, bsfc, and voltage and current developed by the injector.
Keywords: Energi;Transport;Hållbar utveckling;Strömningsmekanik;Övrig teknisk mekanik;Energy;Transport;Sustainable Development;Fluid mechanics;Other engineering mechanics
Issue Date: 2011
Publisher: Chalmers tekniska högskola / Institutionen för tillämpad mekanik
Chalmers University of Technology / Department of Applied Mechanics
Series/Report no.: Diploma work - Department of Applied Mechanics, Chalmers University of Technology, Göteborg, Sweden : 2011:42
URI: https://hdl.handle.net/20.500.12380/149154
Collection:Examensarbeten för masterexamen // Master Theses



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