Abstract: This invention comprises improvements in combustion products pressure generators of the continuous burner type or expansion chamber type and reciprocating piston engine or turbines which uses the combustion products the expansion chamber produces for power and to drive the air compressor, which supplies combustion air to the expansion chamber.The intent is to produce a multi-fuel propulsion unit suitable for vehicles, boats and ships, locomotives, etc;, where the load varies widely and rapidly.These power units are very economical on fuel and virtually emission free. They will burn most any free flowing liquid fuel, are instant starting, and burn no fuel when idle.The system compresses air with a reciprocating piston compressor controlled by variable volume means and or unloaders. This compressed air goes through an exhaust heated preheater to 800 degrees F, then to the combustion chambers where it is heated to 1600 degrees F by one or more burners at the volume required.

Abstract: This invention relates to reciprocating piston engines using single acting pistons operating in liquid cooled and lubricated cylinders, said pistons have piston extensions slightly smaller in diameter than the main power pistons and the length of the stroke, operating inside slightly larger, insulated, hot cylinder extensions. Operating in co-operation with a cold air blocking system which fills the clearance space between the piston extension and the hot cylinder wall liner with cool air when the piston is at or near top dead center. Thus keeping the hot pressure fluid medium from coming in contact with the liquid cooled and lubricated cylinder walls in which the main power piston operates. Thereby cutting down the heat losses to the cooling medium.