Why do Diesel Engines Knock?
Answer
Diesel engines knock because of combustion of fuel that has already evaporated when combustion starts. The effects of engine knocking range from inconsequential to completely destructive. Engine knocks can be reduced through indirect injection, pre-injection, injection timing, compression ratio and exhausting gas recirculation.
Q&A Related to "Why do Diesel Engines Knock"
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Diesel knock is generated due to fully advanced timing and retard conditions. If the timing is retard the fuel will not be burned purely and rapid pressure will be developed and pinking
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I used to own a 1984 Chevette with the optional 1.8 litre Isuzu diesel. Most people never heard of it. I changed oil using synthetic oil at one point and was surprised to find that
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Engine knocks are usually caused when the engine throw a rod. Repairing this includes removing the engine block and tearing it completely down.
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Diesel Engine uses Diesel as fuel. It burns it in closed cylinder where it pushes a Piston. Piston is connected to FlyWheel by Crank Shaft.
http://answers.ask.com/Science/Physics/how_a_diese...
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