Ask any professional
service and they will tell you that a diesel knock is the clanking and rattling sound which a diesel engine makes when running. This noise is a result of the compression of air within the cylinders and the ignition of fuel while it is getting injected into the cylinder. This is pretty much the same as a gas engine that is suffering from spark knocking. The fuels timing as it is being injected is vital to stop parts breaking, which can often result from extreme knocking.
A diesel engine works differently than a gas one. With the latter, the fuel is mixed with air after which it is then compressed before a spark will ignite it. With diesel engines, just the air will
be compressed. The fuel will then be injected into a cylinder that is full of compressed air, and the heat from this will ignites the fuel without any help from an electrical ignition.
The telltale sound of a diesel engine is mostly because of the fuel injection process. By injecting fuel into
hotcompressed air, the fuel will ignite as the piston is still going up the cylinder, which causes a detonation and the rattling noise. The is compression driven process, and the more compression ratio there is within the cylinder, the more power output of the engine there is.
While gas engines generally work on a 8:1 to 10:1 compression ratio, a standard diesel engine works at a 14:1 to 25:1 compression ratio. This higher rate allows diesel engines to operate more efficiently than gas ones. A diesel knock is a product of raised compression and fuel injection and is a result of the ignition sequence.
Should you be looking for a professional
auto repair service,
call [cn] on (405) 600-4599 now, we are in [ln].
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