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Diesel fuel

In general is any liquid fuel used in diesel engines, whose fuel ignition takes place as a result of compression of the inlet air mixture (without spark) and then injection of fuel. Diesel engines have found broad use as a result of higher thermodynamic and thus fuel efficiencies. This is particularly noted where diesel engines are run at part-load; as their air supply is not throttled as in a petrol engine, their efficiency still remains high.