PREIGNITION

Etymology

Noun

preignition (plural preignitions)

(automotive) The premature detonation of a fuel charge in Four-stroke cycle engines.

Synonyms

• pinking

• pinging

• knocking

Source: Wiktionary

Pre`ig*ni"tion, n. (Engin.)

Definition: Ignition in an internal-combustion engine while the inlet valve is open or before compression is completed.

Source: Webster’s Unabridged Dictionary 1913 Edition

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