ENGINE

Provided is an engine which can certainly be started even in a very-low-temperature range. The engine comprises a plurality of cylinders, a fuel injection device which injects fuel to the respective cylinders, a combustion chamber temperature calculation means which calculates a temperature in a combustion chamber, a control means which starts the engine by normal operation which injects the fuel to all the cylinders by the fuel injection device or reduced-cylinder operation which injects the fuel to only specified cylinders by the fuel injection device. When starting the engine, the control means controls the engine to conduct the normal operation when the temperature in the combustion chamber calculated by the combustion chamber temperature calculation means is in the very-low-temperature range and to conduct the reduced-cylinder operation when the temperature in the combustion chamber comes into a low-temperature range.