> Hi,
> What makes diesel engine's unique sound?
> Thanks
> Tony
Sound waves.
> Hi,
> What makes diesel engine's unique sound?
> Thanks
> Tony
A lot of diesel engines run at lower RPMs than other petroleum engines.
Also, without spark plugs diesel engines rely on the compression in
their cylinders to ingite the fuel, which makes them sound a little rough.

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- Michael J. Astrauskas