Patent ID: 7650879

Claim:
A two-stroke internal combustion engine suitable for connection to a gas source under pressure, comprising a combustion space, which is enclosed by a cylinder having an end wall, and a piston that is connected to a crankshaft, which piston is arranged for reciprocating motion within the cylinder between a position in which the combustion space has a minimum volume and a position in which the combustion space has a maximum volume, wherein an inlet valve is arranged to close an inlet opening in the end wall and an exhaust valve is arranged to close an outlet opening in the end wall, which outlet opening is arranged to be at least substantially closed and the inlet opening is arranged to be open at the moment when the piston is in the position in which the combustion space has its minimum volume, wherein the minimum volume of the combustion space amounts to less than 3% of the maximum volume of the combustion space, further comprising means for transferring/recovering heat from an exhaust gas flow that flows from the outlet opening to an inlet gas flow that flows to the inlet opening, and further comprising means for measuring a gas temperature in an inlet tract between the means for transferring/recovering heat and the inlet valve, means for comparing the measured gas temperature with a predetermined reference value and means for controlling a supply of fuel in a manner to approximate the reference value.