Abstract

Main subject of this thesis is to contrast gasoline and ethanol fuel combustions by measuring effective parameters. Introduction to the research part comprises theoretical description of alternative fuels available for gasoline engines. Next, it was describe preparation to research, also research itself and the results analysis. Results contain graphs of parameters: the pressure in the engine cylinder, the rate of pressure changes in the cylinder (as a function of crank angle). Results also contain graphs of parameters torque, engine efficiency, concentration of toxic exhaust components (as a function of the air–fuel equivalence ratio (λ) and as a function of the spark advance angle). There parameters are shown for constant the crankshaft rotational speed, for constant throttle position. Research confirmed that the use of ethanol fuel does not cause significant losses or gains in terms of effective parameters.

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