The design and construction of oil engines; (1900)
Goldingham, Arthur Hugh. [from old catalog] · New York, Spon & Chamberlain; [etc., etc.] · leaf 88
een taken and when the instru-ment is heated up; the card is then taken with full-rated load on the brake. It is well to allow the pencilto go several times over the paper so as to procurea card showing several explosions, and thus the aver-age pressure can be taken. 72 OIL ENGINES. The pressure of… … Fig. 37. not be heavy, as the friction necessary to draw such aline is sufficient to cause errors in the diagram. The planimeter or averaging instrument is shownat Fig. 37. No. 1 planimeter is the simplest form of theinstrument, having but one wheel, and is designed tomeasure areas in square inches…
Internal combustion engines
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