Abstract: Engines and processes for their operation include a compressor cylinder, at least one power cylinder, and an expander cylinder. The outlet of the compressor cylinder is fed to the inlet of a power cylinder, and the outlet of the power cylinder is fed to the expander cylinder. The compressor cylinder and the expander cylinder are operated in two-stroke fashion, and the power cylinder is operated in four-stroke fashion, all of which cylinders share a common crankshaft. Heat may be recuperated from the exhaust gas and directed to the inlet gas of the power cylinder, increasing overall efficiency.

Abstract: A waste heat recovery system for a split-cycle engine includes a heat exchange unit. An air compressor device is in communication with the heat exchange unit. A waste heat input receives waste heat from the engine and is in fluid communication with the heat exchange unit. An ambient air intake connected to the air compressor device draws air into the air compressor device. A compressed air outlet member on the air compressor device in fluid communication with a compression cylinder of the split-cycle engine delivers compressed air from the air compressor device to the engine. Engine waste heat is communicated to the heat exchange unit and energy from the waste heat is used to drive the air compressor device, causing the air compressor device to draw in ambient air through the ambient air intake, compress the ambient air, and deliver compressed air to the engine through the compressed air outlet.

Abstract: A two-stroke or four-stroke internal combustion engine operates by admitting a carburated mixture or by admitting fresh air with the direct or indirect injection of fuel. The engine has at least one cylinder, which defines a variable-volume combustion chamber in which an engine piston, coupled by a connecting rod to the wrist pin of a crankshaft, executes a reciprocating movement. A compressor associated with each cylinder to supercharge the cylinder with carbureted mixture or with fresh air has at least one stage and, in the compression chamber, a compressor piston moves and is coupled to the crankshaft by a link rod articulated to an eccentric mounted on the shaft of the crankshaft.

Abstract: This two-stroke cycle is applicable at classical internal combustion engines (piston-rod-crankshaft) as well as at engines with two-sided piston. The very systems has at least one pair of cylinders (1, 2) of which one (1) is compresor (pump) and other (2) is engine. The compressor and the engine pistons (3, 4) have such phase delay to each other that when one piston is in the midpoint between two “dead points” of the engine, other is in one of “dead points”. At the moment when the compressor piston (3) has passed half the way from LDP to UDP, it also has precompressed the sucked air, while the engine piston (4) is at LDP and has opened the exhausting channel (15), which leaves out the combustion gas. Because of the higher pressure in the compressing pipe relating to the pressure in engine cylinder (2), the inlet valve (7) of the engine opens and fresh air enters the engine.

Abstract: A two-stroke or four-stroke internal combustion engine operates by admitting a carburated mixture or by admitting fresh air with the direct or indirect injection of fuel. The engine has at least one cylinder, which defines a variable-volume combustion chamber in which an engine piston, coupled by a connecting rod to the wrist pin of a crankshaft, executes a reciprocating movement. A compressor associated with each cylinder to supercharge the cylinder with carbureted mixture or with fresh air has at least one stage and, in the compression chamber, a compressor piston moves and is coupled to the crankshaft by a link rod articulated to an eccentric mounted on the shaft of the crankshaft.

Abstract: Two-stroke or four-stroke internal combustion engine (M1), operating by admitting a carburated mixture or by admitting fresh air with the direct or indirect injection of fuel, the engine having at least one cylinder (1) defining a variable-volume combustion chamber in which an engine piston (4) coupled by a connecting rod (7) to the wrist pin (8) of a crankshaft (9) executes a reciprocating movement, and a compressor associated with each cylinder in order to supercharge the cylinder with carburated mixture or with fresh air, characterized in that said compressor is a compressor with at least one stage, in the compression chamber (14a, 14b) of which there moves a compressor piston (212) which is coupled to the crankshaft by a link rod (111) articulated to an eccentric (10), said eccentric being mounted on the shaft of said crankshaft.

Abstract: A method for retaining and recalling technical data associated with a solenoid-operated fuel injector improves engine emissions. Each fuel injector is tested to generate technical data specifications relating to the fuel injector. The technical data specifications are then transferred to a memory means, such as an EEPROM memory chip, which is attached to the fuel injector. The injector then carries its unique technical data specifications. The technical data specifications can then be read from the fuel injector and the recalled technical data specifications are provided to a vehicle computer. The vehicle computer adjusts for variations between fuel injectors to collapse variability of injectors to a single, centered injector flow.

Abstract: A split cycle internal combustion engine having located wholly within the combustion chamber (13) of the firing cylinder (10) and spaced from the walls thereof a hollow dome (14) with the closed head of the dome (14) adjacent to the head (11) of the firing cylinder (10) and the open base of the dome (14) nearer to the power piston (12), a nozzle (24) directing air from a compressor around the interior wall of the dome (14), nozzle (24) directing fuel into the dome (14) after all the air has entered the dome (14) and a nozzle (25) for igniting the fuel/air mixture when the temperature of the dome (14) is insufficiently high for ignition. An inwardly directed flange (17) extends around the open base of the dome (14) to form a channel (18). It is preferred that the engine operates at very high pressures, the compressor is multi-stage.

Abstract: A metered induction two cycle engine is presented. In accordance with the metered induction two cycle engine, an aspirating cylinder (or pulsing air-charger) is connected to a combustion cylinder by a voluminous transport duct having a valve disposed therein. The valve permits flow from the aspirating cylinder and duct to the combustion cylinder and prohibits flow in the opposite direction. The duct acts as an extension of the clearance volume of the aspirating cylinder. The valve is actuated when the pressure in the duct exceeds the pressure in the combustion cylinder. Further, the aspirating cylinder leads the combustion cylinder by a fixed amount to provide a disciplined flow of mixture (i.e., air and fuel) into the combustion cylinder.

Abstract: An open-cycle internal-combustion Stirling engine having two pistons coupled by a rhombic drive which define a combustion chamber and a compression chamber, within either a single cylinder or two cylinders, and a manifold enabling flow of the working fluid between the compression chamber and the combustion chamber with a plurality of engine valves controlling such flow, the dead space of the manifold being minimized and provision of the working fluid (i.e., air) being provided by an intake valve and an exhaust valve with corresponding manifolds for providing the open-cycle characteristics of the engine while approximating an ideal thermo-dynamic system.

Abstract: A piston which is reciprocable within a cylinder is rigidly connected to a bearing housing by a connection. The connection comprises a rigid tube fixed to the piston and a rigid rod fixed to the housing which extends within the tube coaxially thereof. The tube has an internal thread which engages with an external thread on the rod such that rotation of the tube changes the length of the connection and hence the position of the piston within its cylinder. The tube is rotated by way of a worm spindle which engages with longitudinal grooves formed on the external surface of the tube. The arrangement can be used particularly to vary the compression ratio of an internal combustion engine having a counter rotating crank drive.

Abstract: A two-stroke combustion engine with intake and exhaust ports which are indirectly or directly controllable in accordance with the reciprocating motion of a working piston in a cylinder space, wherein at one side of the piston there is a working chamber accessible to an ignition device and connectible to an outlet, and at the other side of the piston there is a compression chamber, and wherein there is associated with the working piston at least a second auxiliary piston functioning as a compression piston, which operates in a compression chamber at least in a single acting mode.