The design and construction of oil engines; (1900)
Goldingham, Arthur Hugh. [from old catalog] · New York, Spon & Chamberlain; [etc., etc.] · leaf 55
L ENGINES. 39 be entirely renewed if necessary and at small expense.This type of valve-box is shown at Fig. 18, both valvesbeing operated from the cam-shaft. The springs neces-sary to close air and exhaust valves in engines over10 brake or actual H. P. are best placed so as not to bein close… … Fig. 18. opened by the partial vacuum in the cylinder duringthe suction period, and closed by a delicate spring, asshown in Fig. 20. The air and exhaust valves andport openings are usually made of such an area thatthe velocity of the air inlet as it enters the cylinder is100 feet per second—the…
Internal combustion engines
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