engine knock

engine knock

[′en·jən ‚näk]
(mechanical engineering)
In spark ignition engines, the sound and other effects associated with ignition and rapid combustion of the last part of the charge to burn, before the flame front reaches it. Also known as combustion knock.
References in periodicals archive ?
Over time, the damage caused by these deposits may lead to a number of fuel system related problems such as hesitation, sluggishness, stalling, pre-ignition, engine knock and overall loss of power.
To prepare for the 2014 season, a team from ExxonMobil Research and Engineering Company created a brand new fuel that would mitigate the risk of engine knock to help extract maximum power from the available fuel.
Sudani's remarks had resonance with many drivers who have been complaining about engine knock and rough engine performance, saying that suggests the state produced gasoline has a lower octane rating than officially claimed.
The sources while quoting experts said the high level of octane present in E-10 improves the vehicles' engine performance and prevents engine knock.
The sources while quoting experts said the high level of octane present in E-10 improves the vehicles engine performance and prevents engine knock.
in room W1-51) Thursday, April 19 - A Real Time Statistical Method for Engine Knock Detection (9 a.
Other technology used on the new engine include piston oil jets to suppress engine knock with the 10.
Amanda had no prior warning from engine knock or her oil pressure warning-light, so she had no way of preventing the damage.
Ethanol can be used to boost octane and reduce engine knock, and it also can be blended with gasoline to make an environmentally friendly fuel.
The substance produced, TEL, is used in eliminating engine knock.
That creates engine knock and emissions of nitrous oxide pollution.
A new method for detecting engine knock holds promise for more efficient automobiles, according to researchers at Ohio State University, Columbus.

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