Abstract: An internal combustion engine having a combustion chamber incorporates a fuel conditioner and injector employs a vessel having a wall exposed within the combustion chamber to be heated by combusting fuel. The vessel encompasses an expansion chamber and has at least one open fuel injection passage through the wall into combustion chamber. An inlet conduit receives liquid fuel at a predetermined pressure from a fuel delivery system. A nozzle interconnects the inlet conduit and the expansion chamber. A pin operably seals the nozzle for timed injection of liquid fuel into the expansion chamber. An operator actuates the pin from a closed position sealing the nozzle to an open position placing the fuel injection volume in fluid communication with the expansion chamber.

Abstract: A two-stroke reciprocating piston engine is configured with a cylinder having a cylinder head. A piston is mounted in a bore of the cylinder for reciprocating motion. A symmetrically shaped combustion chamber is defined by a crown of the piston at top dead center and the cylinder head. At least two valved inlet ports having orifices positioned in the cylinder head symmetrically with respect to the axis are connected to receive pressurized oxidizer charge. At least two unvalved exhaust ports having apertures positioned in the cylinder wall symmetrically with respect to the axis are provided. The exhaust ports are exposed with the piston proximate bottom dead center and are operatively positioned with respect to the at least two valved inlet port orifices for forced gas exchange in the cylinder. At least one fuel injection device introduces fuel symmetrically into the combustion chamber.