Aviation engines; design--construction--operation and repair; (1919)
Pagé, Victor Wilfred, 1885-1947 · New York, The Norman W. Henley publishing co. · leaf 284
Fig. 113, it is difficult to havethem open directly into the cylinder, and pockets aresometimes necessary. A large valve would weigh morethan two smaller valves having an area slightly largerin the aggregate; it would require a stifTer valve springon account of its greater weight. A certain amount… … 286 Aviation Engines area is obtained by the use of two valves, the gases willbe drawn into the cylinder or expelled faster than witha lesser area. Even if the areas are practically the sameas in the diagram at Fig. 113, the smaller valves may Inlet Valve Depressing Lever,Spark PlugI ,Push Rod…
Airplanes
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