摘要:
The invention relates to a motor-generator arrangement comprising an internal combustion engine following the opposed-piston principle, with an arrangement of at least two opposed pistons that travel in one cylinder with a common combustion chamber, according to the preamble of claim 1. In order to successfully implement a motor-generator arrangement for the intended use in a combined heat and power plant and thus obtain a significantly higher degree of efficiency than is achieved in currently known internal combustion engines, with this principle thus being able to be effectively implemented in power/heat cogeneration, the invention proposes that the two outputs 3, 3' are rigidly coupled by a beltless or chainless coupler gear 4 and that, in each case, torsion-elastic and/or laterally-displaceable coupling elements are arranged between the outputs of the crankshafts and the coupler gear 4, and/or between the coupler gear 4 and coupling gears 6, 6'.
摘要:
An internal combustion engine comprising at least one cylinder (12) and a crankshaft (14) disposed at one end of the cylinder. Within each cylinder there is a pair of opposed, reciprocating pistons (16,18) that form a combustion chamber (28) therebetween, including an outer piston (18) being the piston furthest from the crankshaft and an inner piston (16). The pistons drive the crankshaft (14) via respective drive linkages. The drive linkage (60, 68, 70) for the outer piston is external to the cylinder.
摘要:
An internal combustion engine comprising at least one cylinder (12) and a pair of opposed, reciprocating pistons (16,18) within the cylinder forming a combustion chamber (28) therebetween. The engine has at least one fuel injector (34) disposed at least partly within the cylinder, the fuel injector having a nozzle (38) that is positioned within the combustion chamber and through which the fuel is expelled into the combustion chamber, wherein the nozzle (38) is exposed directly within the combustion chamber (28).
摘要:
In a two-stroke opposed-piston engine, a ported cylinder with a pair of opposed pistons is equipped with a decompression port including a valve and a passage with an opening through the cylinder wall that is located between the cylinder's intake and exhaust ports. The decompression port enables release of compressed air from the cylinder after the intake and exhaust ports are closed. The valve is opened to permit compressed air to be released from the cylinder through the passage, and closed to retain compressed air in the cylinder. Engine braking is supported by release of compressed air through the decompression port into an exhaust channel when the pistons are at or near top dead center positions as the cycle transitions from the intake/compression stroke to the power/exhaust stroke. Compression release from the cylinder after intake and exhaust port closure can also support other engine operations.
摘要:
A method of charging an internal combustion engine with a fuel air mixture, the engine having opposed pistons with a combustion chamber therebetween, wherein the method includes forcing induction air during a compression stroke between a first and a second cylinder via a contraction and expansion or a venturi disposed between the first and second pistons.
摘要:
An internal combustion engine can include a piston moving in a cylinder and a junk head disposed opposite the piston head in the cylinder. The junk head can optionally be moveable between a higher compression ratio position closer to a top dead center of the piston and a lower compression ratio position further from the top dead center position of the piston. At least one intake port can deliver a fluid comprising inlet air to a combustion chamber within the cylinder. Combustion gases can be directed out of the combustion volume through at least one exhaust port. One or both of the intake port and the exhaust port can be opened and closed by operation of a sleeve valve that at least partially encircles the piston. Related articles, systems, and methods are described.
摘要:
A piston construction for an opposed-piston engine accommodates contoured end surfaces of the piston crowns and articulation of the pistons with piston rods. The shape of each piston crown includes a bowl with an adjoining ridge that protrudes axially of the piston. A cooling construction for the piston includes an outer gallery running around the inner surface of the piston sidewall in the vicinity of the crown. The outer gallery girds and is in fluid communication with a central gallery that abuts the deepest part of the bowl. The outer gallery has an asymmetric profile that rises under the ridge and that slants upwardly under a peripheral portion of the bowl. A mechanism for coupling the piston to a piston rod includes a biaxial slipper bearing.
摘要:
The invention relates to a dual piston engine comprising two pistons (1, 3) which can be displaced in relation to each other,characterized in that the outer diameter of the one piston (1) corresponds approximately to the inner diameter of the combustion chamber, wherein the one piston (1) is displaceably arranged in the combustion chamber and comprises on the side facing away from the combustion chamber a receptacle for the other piston (3). The other piston (3) is displaceably arranged in the receptacle of the one piston (1) and is connected to a shaft via a connecting rod (4), the one piston (1) comprising on the front face facing away from the other piston (3) an opening that connects the receptacle to the combustion chamber above the one piston (1) and can be closed by the other piston (3).
摘要:
A split -cycle aircraft engine includes a crankshaft rotatable about a crankshaft axis. A power piston is slidably received within a power cylinder and is operatively connected to the crankshaft such that the power piston reciprocates through an expansion stroke and an exhaust stroke during a single rotation of the crankshaft. A compression piston is slidably received within a compression cylinder and is operatively connected to the crankshaft such that the compression piston reciprocates through an intake stroke and a compression stroke during a single, rotation of the crankshaft. A gas crossover passage operatively interconnects the compression cylinder and the power cylinder. An air reservoir is operatively connected to the gas crossover passage by a reservoir passage. The air reservoir is selectively operable to receive and deliver compressed air. The engine is mounted to an aircraft and the air reservoir is disposed within the aircraft.A split -cycle aircraft engine includes a crankshaft rotatable about a crankshaft axis. A power piston is slidably received within a power cylinder and is operatively connected to the crankshaft such that the power piston reciprocates through an expansion stroke and an exhaust stroke during a single rotation of the crankshaft. A compression piston is slidably received within a compression cylinder and is operatively connected to the crankshaft such that the compression piston reciprocates through an intake stroke and a compression stroke during a single, rotation of the crankshaft. A gas crossover passage operatively interconnects the compression cylinder and the power cylinder. An air reservoir is operatively connected to the gas crossover passage by a reservoir passage. The air reservoir is selectively operable to receive and deliver compressed air. The engine is mounted to an aircraft and the air reservoir is disposed within the aircraft.A split -cycle aircraft engine includes a crankshaft rotatable about a crankshaft axis. A power piston is slidably received within a power cylinder and is operatively connected to the crankshaft such that the power piston reciprocates through an expansion stroke and an exhaust stroke during a single rotation of the crankshaft. A compression piston is slidably received within a compression cylinder and is operatively connected to the crankshaft such that the compression piston reciprocates through an intake stroke and a compression stroke during a single, rotation of the crankshaft. A gas crossover passage operatively interconnects the compression cylinder and the power cylinder. An air reservoir is operatively connected to the gas crossover passage by a reservoir passage. The air reservoir is selectively operable to receive and deliver compressed air. The engine is mounted to an aircraft and the air reservoir is disposed within the aircraft.
摘要:
Die Erfindung betrifft eine Zylinderanordnung (1) für eine Hubkolbenbrennkraftmaschine mit mindestens einem Zylinder (2), in welchem Zylinder (2) ein Kolben (3) zwischen einem oberen Totpunkt (OT) und einem unteren Totpunkt (UT) hin- und herbewegbar angeordnet ist. Im Zylinder (2) ist durch einen Zylinderdeckel (4), eine Zylinderwand (5), und eine Kolbenoberfläche (6) des Kolbens (3), ein Brennraum (7) umfassend einen Teilbrennraum (11, 1100) begrenzt, wobei der Brennraum (7) gegen eine Unterseite (8) des Kolbens (3) durch eine mindestens einen Kolbenring (9) umfassende Kolbenringpackung abgedichtet ist. Erfindungsgemäss ist ein Druckraum (10, 100, 1000) und ein Strömungskanal (12) zur Bildung einer Gasströmung (13) zwischen dem Druckraum (10, 100, 1000) und dem Teilbrennraum (11, 1100) vorgesehen. Die Erfindung betrifft darüber hinaus eine Hubkolbenbrennkraftmaschine mit einer solchen Zylinderanordnung (1).