spark knock

spark knock

[′spärk ‚näk]
(mechanical engineering)
The knock produced in an internal combustion engine precedes the arrival of the piston at the top dead-center position.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
The spark knock sensor is designed to detect any spark knock, vibrations and abnormal sound and report same to the engine computer for optimum engine performance and protect the engine from power-robbing.
Combustion chamber volume decreases from carbonaceous deposits, causing spark knock. This causes rapid sludge development in the engine, leading to severe engine damage.
Playful puppy Lottie had the spark knocked out of her when she bounded up to a jogger only to be whacked with a belt.