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In spark-ignition internal combustion engines, knocking (also knock, detonation, spark knock, pinging or pinking) occurs when combustion of some of the air/fuel mixture in the cylinder does not result from propagation of the flame front ignited by the spark plug, but when one or more pockets of air/fuel mixture explode outside the envelope of the normal combustion front.
A dud (also a misfire or failure to fire) occurs when the trigger is pulled but the primer or powder in the cartridge malfunctions, causing the firearm not to discharge. Dud rounds can still be dangerous and should be deactivated and disposed of properly. [citation needed]
A backdraft (North American English), backdraught (British English) [1] or smoke explosion is the abrupt burning of superheated gases in a fire caused when oxygen rapidly enters a hot, oxygen-depleted environment; for example, when a window or door to an enclosed space is opened or broken.
Both of these cause significant degradation to traditionally constructed engines, posing both residue and corrosion issues in increasing proportion with increasing fractions of ethanol. Whereas age-degraded gasoline may simply polymerize, evaporate, and thus lose its flammability, age-degraded gasoline-ethanol blends can cause severe damage if ...
Human Rights Watch (HRW) said on Sunday that evidence suggested a misfired rocket was the likely cause of an explosion that resulted in heavy casualties at a hospital in Gaza on Oct. 17.
LONDON (Reuters) -Britain's Trident nuclear-deterrent system misfired during a test last month, sending a missile crashing into the ocean off the Florida coast near the submarine that launched it ...
An engine misfire, see engine knocking A song on Queen's album Sheer Heart Attack A malfunctioned cartridge that fails to discharge at all ( dud ), doesn't discharge promptly ( hang fire ), or only partially discharges ( squib load ) when being shot from a firearm.
The apparent turmoil in Natalie Rupnow’s family life, as documented by court records, offer a glimpse into events that may have shaped her path before Monday’s tragedy.