A charged internal combustion engine having at least one stage of charging by a turbocharger, in which at least one supplemental compressor is connected parallel to or in series with the turbocharger, and in which the supplemental compressor has a drive independent from the working medium cycle of the internal combustion engine. Further, the present invention relates to compositions comprising lubricant and fire hazard-reducing agent and methods for reducing flammability of flammable refrigerant, for delivering a fire hazard-reducing agent to a refrigeration or air conditioning apparatus, and for replacing a non-flammable refrigerant with a flammable refrigerant. In some versions, the hinge is a living hinge formed by flexible or thinned-out regions of the belt between rigid regions.