Dual fuel engine

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The dual fuel engine is the most common piston engine, powered by two fuels. Typically, this concept is used when a diesel engine is fed with a gaseous fuel, such as natural gas or generator gas.

In the diesel engine, the ignition occurs when the diesel fuel is injected into the combustion chamber, which ignites from the heated (compressed) gas in the chamber. However, gas fuels have a high resistance to self-ignition (expressed in methane), so they can not ignite from the compression itself. Therefore, in order to initiate combustion in the chamber, it is necessary to inject a small dose of diesel (the so-called pilot dose).

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