On the Effects of the Position of a Carburetor on the Combustion in a Small Two-Stroke Cycle Engine

概要

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In the previous experiments^(1) with a small two-stroke cycle engine, the authors found that as a carburetor was put near an inlet port, the combustion in the cylinder became worse. In order to examine the effect of the position of a carburetor on the engine combustion, they carried out systematically some experiments with an intake pipe of constant length. The results obtained are summarized as follows : a) In general, the nearer the carburetor approaches the inlet port, the worse the combustion becomes. b) With an intake pipe of constant length, the delivery ratio is scarcely affected by the position of a carburetor in the intake pipe system, but the fuel consumption varies extensively by the position of it. c) The poor combustion or mis-firing is caused by the lack of fuel, which is partly governed by the matching condition q and depends largely on the amplitude of pulsation wave that increases with the engine speed and the approaching of carburetor to the inlet port.