Abstract: An internal combustion engine includes at least one cylinder, a piston reciprocating in the cylinder, and a combustion chamber defined by the piston and the cylinder. The cylinder has an intake for supplying a mixture of air and fuel to the combustion chamber and an exhaust for releasing exhaust gases from the combustion chamber. An intake valve is operatively positioned in the intake, and an exhaust valve is operatively positioned in the exhaust. A compressor is designed to pressurize the air, and a fuel means is adapted to supply fuel. The device further includes a pressure-regulating member connected to the exhaust, and a dosing member connected to the intake and is adapted to determine, in coaction with the pressure-regulating member, the amount of fresh mixture of fuel and air in relation to the amount of retained exhaust gases in the combustion chamber.

Abstract: A method of continuously regulating the operation of a ventilation plant of the zero-pressure type, which is preferably of heat recovery type. This is done by continuously regulating the rotational speed of the exhaust fan. The invention also relates to a ventilation plant for carrying out the method.