. Automotive industries . anifold for an engine of thisclass, and Fig. 7 is the camshaft withthe order of gas admission. In this case cylinder 2 is the first toaspire, cylinder 1 coming immediatelyafter it. During two revolutions of the engine the car-bureter supplies a mixture to the succeeding cylinders atintervals of a half revolution, and during the rest of thecycle it is inactive. During this revolution there is partial condensation ofthe mixture remaining in the intake manifold, and thiscondensed gasoline is drawn into the cylinder which is thefirst to aspire after the interval. If the m
. Automotive industries . anifold for an engine of thisclass, and Fig. 7 is the camshaft withthe order of gas admission. In this case cylinder 2 is the first toaspire, cylinder 1 coming immediatelyafter it. During two revolutions of the engine the car-bureter supplies a mixture to the succeeding cylinders atintervals of a half revolution, and during the rest of thecycle it is inactive. During this revolution there is partial condensation ofthe mixture remaining in the intake manifold, and thiscondensed gasoline is drawn into the cylinder which is thefirst to aspire after the interval. If the manifold is laidout according to Fig. 5, the first cylinder to aspire afterthe interval will have a rich mixture. If the manifold isaccording to Figs. 6 and 8, either one cylinder will have aricher mixture than the other, or the two will have thesame mixture, according to the order in which they cylinder 1, Fig. 8, takes the first aspiration, it will re-ceive the gasoline condensed at points a and b, while cylin-. formed it was necessary to have a curved pipe from thecarbureter to the intake port (Fig. 2) and it was advisablethat the curve be made as easy as possible. A much higherefficiency is obtainable with the arrangement shown inFig. 1 than with Fig. 2. Twin Cylinder Vertical Engine Practice For twin cylinder vertical engines the type of manifoldvaries according to whether the throws are at 360 degrees (Fig. 3) or at 180 degrees (Fig. 4). With throws at 360degrees the manifold should be laid out according to Fig. 5, (a.) being the valve of the first cylinder, and (b) the valveof the second cylinder. It is advantageousto have an internal intake manifold, sur-rounded by the circulating water, the heatthus obtained being sufficient to maintainthe gases at a sufficient temperature to pre-vent condensation. On some engines withthermo-syphon water circulation and in-clined to run rather hot, this heating maybe excessive in summer but in winter itgives every advantage. T
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectaeronautics, bookyear
