Engine knock is the sharp, metallic sound that cuts through the hum of a healthy engine. At its core, engine knock is a problem of timing. In a knocking engine, parts of the air-fuel mixture don't ...

Engine knock, wherein fuel ignites unevenly along the cylinder wall resulting in damaging percussive shockwaves, is an issue that automakers have struggled to mitigate since the days of the Model T.

Add Yahoo as a preferred source to see more of our stories on Google. Your engine can make a lot of weird noises, depending on what has gone or is about to go fully kaput. If it's a rhythmic pinging ...

The demon of engine knock is something an owner of a traditional high-performance Pontiac knows all too well. An engine designed when 102-octane high test was at almost every fuel station in the ...

Scientists analyzed detonation formation in hydrogen/methane air mixtures, quantifying the effect of non-thermal reactions on the mechanism of detonation Small-displacement turbocharged internal ...

The automotive industry continues to be a hotbed of innovation. Activity is driven by the need for improving the vehicle’s fuel efficiency, reduction in harmful gas emissions, and enhanced driving ...

Fuel Knocking Can Threaten Destruction to Engines. Technologists Are Familiar With Some of the Answers to the Problems Involved, But Many More Data Are Required. New Research with a Full-Scale Engine ...

General Motors has quietly repurchased dozens of full-size pickup trucks and sport utility vehicles, its most profitable models, after customers complained about knocking noises from the engines, ...