EFFECT OF "PINKING"
INCREASES OIL CONSUMPTION By inducing detonation, or " pinking." in experimental engines, research workers in tho Pennsylvania State College have been able to prove that this phenomenon produces an increase in oil consumption. No theory is advanced to account for this somewhat unexpected result. In one caso the spark was advanced from 28 degrees to 37 degrees, causing audible detonation, and the oil consumption thereupon increased by 25 per cent. A " hang-over " elTect was noticed after restoring the timing to 28 degrees, the heavier oil consumption persisting, although detonation then ceased. After allowing the engine to remain stationary for 24 hours, a further test was inndo, with 28 degrees timing, ■md it was found that the oil consumption had returned to normal. Further tests were made, in which detonation was induced by a chnnge of fuel, the spark advance remaining unaltered. Tho results were similar to those obtained by altering tho timing.
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New Zealand Herald, Volume LXXIV, Issue 22670, 6 March 1937, Page 12 (Supplement)
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154EFFECT OF "PINKING" New Zealand Herald, Volume LXXIV, Issue 22670, 6 March 1937, Page 12 (Supplement)
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