Abstract: An engine is disclosed incorporating a block means defining a plurality of cylinder chambers for containing reciprocating pistons that are coupled to provide output drive power. Means are incorporated in the block means for valving the cylinder chambers to provide pumping flow. Additionally, means are provided for selectively burning fuel in said cylinder chambers at variable time intervals in accordance with demands for drive power. A variable number of elemental charges of fuel may be injected and ignited during selected cycles of each cylinder in accordance with the immediate demand for power. Admission of air is unrestricted during the intake strokes to result in combustion with an abundance of air. An initially-lean mixture is compressed and the flame to consume it is generated by spark-ignition of an elemental charge of vaporized fuel which is the last to be injected in the combustion chamber.

Abstract: A power system is disclosed for use as an automotive drive engine, utilizing combustible fuel and hydraulic drive. A multiple-phase engine, incorporating three piston units, burns fuel to provide alternating-pressure tri-phasic hydraulic energy in three lines. The engine is resonant in operation, i.e. all parts move in a rectilinear mechanically-resonant motion pattern and a constant positional phase relationship is preserved between the engine pistons by a single hydraulic mechanism.As disclosed, the tri-phasic hydraulic energy is applied to a dynamic valve unit for conversion into a unidirectional hydraulic power stream that is applied to actuate one or more hydraulic motors. In the described embodiment, the valve unit is driven by a synchronous electrical motor which is phase varied in relation to the operating phase of the engine by a control unit that regulates the entire system for response to manual commands. The central logic or control unit receives manual command data as well as system data, e.g.