Occurrence of Preignition in Present-Day Cars in Normal Service

PREIGNITION is defined by Mr. Winch as the initiation of a flame front by some means other than the spark discharge at some point in the combustion chamber prior to the arrival of the normal flame at that point. He believes that wild ping is actually a combination of preignition and knock. His study...

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Bibliographic Details
Published in:SAE transactions 1954-01, Vol.62, p.50-56
Main Author: Winch, R. F.
Format: Article
Language:English
Subjects:
Automobiles
Cylinders
Engines
Flame propagation
Flames
Fuels
Ignition
Octane ratings
Octanes
Winches
Online Access:Get full text
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Summary:PREIGNITION is defined by Mr. Winch as the initiation of a flame front by some means other than the spark discharge at some point in the combustion chamber prior to the arrival of the normal flame at that point. He believes that wild ping is actually a combination of preignition and knock. His study of both 1952 and 1953 cars indicates that preignition has become a very serious problem. Moreover, in some cases, the problem was found to be more serious in the 1953 car of a particular make than in the 1952 model. In these studies preignition and wild ping were identified by a technique that makes use of the spark plug as an ionization gap.
ISSN:0096-736X
2577-1531