A method for use in generating power in an internal combustion engine includes controlling a flow of a gas having an initial temperature and an initial pressure to a combustion chamber of the engine by a controller through an intake mechanism to provide a first mass of the gas to the chamber The combustion chamber is expanded from a minimum volume to a maximum volume in an intake stroke The maximum volume of the chamber exceeds a maximum compression volume of the chamber The first mass of the gas in the chamber has a first pressure and a first temperature at the maximum compression volume Thechamber is reduced to the compression volume from the maximum volume in a compression stroke.