be-fore center. (Fig. 1.) Using two sparks at this poinlwill in effect advance the spark and cause more violentdetonation. If, however, the engine is knocking badlywith an advance of 1.4 in. on a single spark, and 2sparks are applied, knocking will cease, due again tothe earlier effective advance.… … Apparatus tised in study of flame propagationphenomena This is further illustrated in Figs. 2 and 3. Under theconditions obtaining in Fig. 2, it will be noted that withone spark detonation does not occur, the range of maxi-mum pressure, from cycle to cycle, varying as shown bythe bracket from about…
Automobiles · Aeronautics
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