{"version":"1.0","type":"link","title":"Engine knocking - Newikis","description":"In spark-ignition internal combustion engines, knocking (also called knock, detonation, spark knock, or pinging) occurs when combustion of some of the air/fuel mixture in the cylinder results from a source other than the flame front ignited by the spark plug, in other words, when one or more…","provider_name":"Newikis","provider_url":"https://newikis.com","cache_age":86400,"thumbnail_url":"https://upload.wikimedia.org/wikipedia/commons/9/9a/Cliquetis.gif","thumbnail_width":500,"thumbnail_height":500}