Throughout this site we use many technical terms, and given the breadth of readership our site enjoys, sometimes we are remiss and incorrectly assume everyone knows what we are referring to. For those that do not, here are some explanations of the technical terms use. |
Knock, Diesel
A feature of compression-ignition (diesel) engines due to the delay between the point of initial injection of fuel and the onset of combustion, the delay depending on the cetane number and quality of the fuel. During the delay unburnt fuel accumulates and then tends to burn uncontrollably with rapid release of energy and shock waves giving rise to a knocking sound. |
