Abstract: An internal combustion engine has an engine block has a cylinder defined therein. The cylinder has a longitudinal axis. A first piston and a second piston are disposed within the cylinder. The first piston is directly opposed to the second piston. A first crankshaft is coupled to the first piston. A second crankshaft is coupled to the second piston. The first crankshaft is coupled to the second crankshaft through a plurality of gears. A pocket extends from the cylinder. The pocket defines a dead space therein. The pocket has a first wall spaced apart from a second wall, and a third wall coupled between the first wall and the second wall. The first wall has a first opening. The second wall has a second opening. The third wall has a third opening. A first valve is located within the first opening. A second valve located within the second opening. A spark plug is located within the third opening.

Abstract: An air-cooled self-supercharging four stroke internal combustion engine having four pistons which move in unison. There are two downward piston strokes in each four stroke cycle. The downward strokes of the pistons are used to compress the air in the crank case and supercharge the engine by forcing more air and fuel into the two combustion chambers. Each combustion chamber serves two piston cylinders. The compressed air and fuel mixture is forced into only one combustion chamber during each downward stroke of the pistons. The two combustion chambers are charged with air and fuel on alternating downward piston strokes. The engine is air-cooled by the flow of the combustion intake air which passes through the crank case. At the same time, heat transferred from the engine pre-heats the intake air to improve combustion efficiency.

Abstract: The present invention is an improved drive train which includes an engine having at least one power cylinder with a power piston mounted for reciprocating motion therein. The power piston is connected to a crank shaft in the usual manner for translation of the reciprocating motion of the power piston into rotation of the crankshaft, which in turn, is transmitted in the conventional manner to the drive wheels of the vehicle. Provision is made for the feed of fuel into a combustion chamber located within the power cylinder at one side of the power piston. Intake and exhaust valves, in fluid communication with the combustion chamber serve, respectively, to allow intake of air during an intake stroke of the power piston and exhaust of combustion products during an exhaust stroke of the power piston. A floating piston at least partially closes the combustion chamber opposite the power piston and is mounted for reciprocating motion relative to the combustion chamber.

Abstract: A valveless four-stroke internal combustion engine employs an intake piston and an exhaust piston that reciprocate within intake and exhaust cylinders disposed adjacent the combustion chamber of the engine. A power piston reciprocates within a cylinder that defines a portion of the combustion chamber. An intake port opens into the intake cylinder, and an exhaust port opens into the exhaust cylinder. Upon reciprocation of the intake and exhaust pistons, the exhaust ports will be covered and uncovered. By coordinating movement of the intake and exhaust pistons with reciprocation of the power piston, a combustible fuel-air mixture will be drawn into the combustion chamber, ignited, and exhausted. The timing and extent of movement of the intake and exhaust pistons can be controlled by a crankshaft or cams.

Abstract: An internal combustion engine in which the combustion chamber volume is reduced during the movement of the power piston in its compression and power stroke. This permits delaying the time or maximum combustion pressure, due to the ignition and expansion of the compressed fuel/air charge, until the power piston is well past top dead center (TDC), 35 degrees after TDC for example. One advantage to this mode of operation is that the engine crankshaft journal has moved to a position where the axis of the journal is more offset, compared to at or near TDC, from the axis of rotation of the crankshaft so engine torque is increased. This is accomplished by a pair of half round valving pistons mounted in a bore in the cylinder head. The axis of the cylinder head bore coincides with the axis of the engine block bore in which the power piston moves. A camshaft assembly mounted in the cylinder head includes cam discs that are connected to the valving pistons.

Abstract: Combustion engines have opposed pistons in one or more cylinders, with the piston motion determined by cams. Ports, for intake and exhaust, are at one end of the cylinder, opened or closed by one piston, with the combustion chamber at the other end, and the engine being well suited to the optional use of a combustion chamber separate from the cylinder and with the communicating passages controlled by the other piston. That arrangement makes the engine particularly suitable for using heavy or unconventional fuels. The cam profile provides for a four-stroke cycle; one piston moves during the intake and exhaust strokes, while the second piston moves for compression and power strokes. Thus the advantages of a four-stroke engine are obtained while retaining the simplicity of a two-stroke engine. The cam profile may be tailored to the burning characteristics of the fuel, as by providing a period of dwell between the end of the compression stroke and the beginning of the power stroke.

Abstract: A high power, fuel efficient, low-emission, four-stroke, 6 cycle method of operation. A primary intake conduit carries air or a lean mixture from the compression chamber (crankcase) to the combustion chamber. Fuel is added to the air or lean mixture as it passes through the intake conduit. A secondary intake conduit runs from the compression chamber to ports in the cylinder located slightly above the bottom dead center position of the piston. Supplemental air or lean mixture from the compression chamber is fed to the combustion chamber through the secondary conduit when the piston is near its bottom dead center position. While the piston is in its bottom dead center position between its intake and compression strokes, the air or lean mixture from compression chamber provides a stratified charge in the combustion chamber, which is far more efficient than a homogeneous mixture, and has the further benefit of filling the cylinder from the bottom as well as from the top.

Abstract: A method of extracting work from two chambers including a working chamber surrounded by a reciprocating sleeve and an auxiliary chamber surrounding the sleeve.

Abstract: A fluid operated device comprises a cylinder, a piston movable axially therein, a shaft parallel to the axis of the cylinder and coupling means coupling the piston and cylinder and/or the piston and shaft in such a way that axial reciprocation of the piston causes rotation of the cylinder and/or the shaft.

Abstract: An injector arrangement is disclosed for injecting a prevaporized fuel-air mixture into the cylinder of an internal combustion piston engine, the injector comprising an auxiliary piston and cylinder arrangement associated with each cylinder of the internal combustion engine and adapted to act as the combustion chamber for the piston and cylinder with which it is associated, as well as to inject a charge of compressed prevaporized fuel into the auxiliary cylinder acting as a combustion chamber. The compressor arrangement includes an auxiliary double acting piston disposed in the auxiliary cylinder, which cylinder is in communication with the main cylinder at its top, the auxiliary double acting piston being reciprocated by a linkage driven by the engine so as to be reciprocated at one-half the cyclical speed of the reciprocation of the main piston and cylinder.

Abstract: A rotary device particularly useful as a rotary engine comprises a cylinder having two (or more) pairs of axially displaceable pistons, the pistons of each pair being movable towards and away from each other to define an expansible and contractable chamber therebetween. Each chamber includes fuel intake openings, exhaust openings, and spark plugs. The inner surface of the cylinder, and the outer surface of the pistons, include cooperable cam and follower means such that the displacement of the two pistons in each pair towards and away from each other also imparts a rotary motion to the pistons, the side walls of the pistons being formed with gear teeth coupling the pistons to a rotary output shaft.

Abstract: A power device or mechanism embodying cyclic compression and expansion of compressible fluids, such as various gases, in a unique manner hereinafter referred to as the "Zachery" cycle. The power device, as disclosed, includes a chamber, such as a cylinder, and movable components, such as opposed pistons, associated with the chamber for varying the volume of the chamber and varying the pressure of gases therein with the movable components being mechanically connected to crankshafts or other mechanisms to enable the highest pressures obtained during the compression-expansion cycle to occur at or near the maximum lever arm of a crankshaft or other mechanism thereby generating the maximum torque possible from the gas pressure available. The power device also exerts its maximum force when the pressure within the chamber is at a maximum.