A piston arrangement includes a piston movable within a cylinder in reciprocating motion along a piston axis, a rack movable with the piston, a sector gear configured to engage and disengage the rack and rotatable around a sector gear axis, a track adapted to rotate relative to the cylinder around a track axis of rotation, the piston being coupled to the track. The sector gear and the track are coupled in rotation. The track may have a shape such that the movement of the piston coupled to the track is substantially non simple harmonic. Also, an internal combustion engine comprising the piston arrangement.
A piston arrangement comprising: a piston; a rotatable element, rotatable about an axis, having a first engagement profile; and a mechanism comprising: a first connecting element connected to the piston; a second connecting element pivotable about a fixed point and pivotally connected to the first connecting element; and a second engagement profile coupled to the first and/or second connecting element, configured to mechanically engage and disengage with the first engagement profile of the rotatable element.
F01B 9/04 - Reciprocating-piston machines or engines characterised by connections between pistons and main shafts, not specific to groups with rotary main shaft other than crankshaft
F01B 9/06 - Reciprocating-piston machines or engines characterised by connections between pistons and main shafts, not specific to groups with rotary main shaft other than crankshaft the piston motion being transmitted by curved surfaces
A piston arrangement includes a piston movable within a cylinder in reciprocating motion along a piston axis, a rack movable with the piston, a sector gear configured to engage and disengage the rack and rotatable around a sector gear axis, a track adapted to rotate relative to the cylinder around a track axis of rotation, the piston being coupled to the track. The sector gear and the track are coupled in rotation. The track may have a shape such that the movement of the piston coupled to the track is substantially non simple harmonic. Also, an internal combustion engine comprising the piston arrangement.
F01B 9/06 - Reciprocating-piston machines or engines characterised by connections between pistons and main shafts, not specific to groups with rotary main shaft other than crankshaft the piston motion being transmitted by curved surfaces
F02B 75/32 - Engines characterised by connections between pistons and main shafts and not specific to preceding main groups
A piston arrangement comprising: a piston; a rotatable element, rotatable about an axis, having a first engagement profile; and a mechanism comprising: a first connecting element connected to the piston; a second connecting element pivotable about a fixed point and pivotally connected to the first connecting element; and a second engagement profile coupled to the first and/or second connecting element, configured to mechanically engage and disengage with the first engagement profile of the rotatable element.
F01B 9/04 - Reciprocating-piston machines or engines characterised by connections between pistons and main shafts, not specific to groups with rotary main shaft other than crankshaft
F01B 9/06 - Reciprocating-piston machines or engines characterised by connections between pistons and main shafts, not specific to groups with rotary main shaft other than crankshaft the piston motion being transmitted by curved surfaces
F02B 75/32 - Engines characterised by connections between pistons and main shafts and not specific to preceding main groups
A piston arrangement comprising: a piston; a rotatable element, rotatable about an axis, having a first engagement profile; and a mechanism comprising: a first connecting element connected to the piston; a second connecting element pivotable about a fixed point and pivotally connected to the first connecting element; and a second engagement profile coupled to the first and/or second connecting element, configured to mechanically engage and disengage with the first engagement profile of the rotatable element.
F01B 9/04 - Reciprocating-piston machines or engines characterised by connections between pistons and main shafts, not specific to groups with rotary main shaft other than crankshaft
F01B 9/06 - Reciprocating-piston machines or engines characterised by connections between pistons and main shafts, not specific to groups with rotary main shaft other than crankshaft the piston motion being transmitted by curved surfaces
F02B 75/32 - Engines characterised by connections between pistons and main shafts and not specific to preceding main groups
A piston arrangement includes a piston movable within a cylinder in reciprocating motion along a piston axis, a rack movable with the piston, a sector gear configured to engage and disengage the rack and rotatable around a sector gear axis, a track adapted to rotate relative to the cylinder around a track axis of rotation, the piston being coupled to the track. The sector gear and the track are coupled in rotation. The track may have a shape such that the movement of the piston coupled to the track is substantially non simple harmonic. Also, an internal combustion engine comprising the piston arrangement.
F01B 9/06 - Reciprocating-piston machines or engines characterised by connections between pistons and main shafts, not specific to groups with rotary main shaft other than crankshaft the piston motion being transmitted by curved surfaces
F02B 75/32 - Engines characterised by connections between pistons and main shafts and not specific to preceding main groups
An internal combustion engine has a casing and a piston arrangement including a piston coupled to a track. The track is coupled to a shaft and has an inner cam surface and an outer cam surface. The piston is coupled to the track by followers which run on the respective inner and outer cam surfaces of the track to control motion of the piston. A sliding element is connected to the piston and extends below the piston head having a profiled slider surface which engages a corresponding profile in the casing. Also, the casing includes at least two plates having a cutout for receiving the track and a bore for receiving the shaft, and at least two end plates coupled transverse to the plates. At least one cylinder bore is formed in the end plates, and the piston is arranged to move in reciprocating motion in the cylinder bore.
F02B 75/26 - Engines with cylinder axes coaxial with, or parallel or inclined to, main-shaft axisEngines with cylinder axes arranged substantially tangentially to a circle centred on main-shaft axis
F01B 5/00 - Reciprocating-piston machines or engines with cylinder axes arranged substantially tangentially to a circle centred on main shaft axis
F01B 9/06 - Reciprocating-piston machines or engines characterised by connections between pistons and main shafts, not specific to groups with rotary main shaft other than crankshaft the piston motion being transmitted by curved surfaces
F02B 75/32 - Engines characterised by connections between pistons and main shafts and not specific to preceding main groups
F16H 25/14 - Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for interconverting rotary motion and reciprocating motion with reciprocation perpendicular to the axis of rotation
F16H 57/04 - Features relating to lubrication or cooling
A piston arrangement is provided. The piston assembly includes a track and a piston moveable within a cylinder. The track is rotatable relative to the cylinder about an axis of rotation and has a cam surface and an edge surface extending away from the cam surface. The piston is coupled to the track by a follower running on the cam surface. The cam surface is shaped such that, as the track moves relative to the cylinder, the piston head moves in reciprocating motion within the cylinder along a piston axis in accordance with the path of the cam surface. The piston axis is perpendicular to the track axis of rotation. A stabilizing element is connected to the piston, the stabilizing element extending below the piston head and comprising a contact surface which engages the edge surface of the track.
F01B 9/06 - Reciprocating-piston machines or engines characterised by connections between pistons and main shafts, not specific to groups with rotary main shaft other than crankshaft the piston motion being transmitted by curved surfaces
F16M 1/02 - Frames or casings of engines, machines, or apparatusFrames serving as machinery beds for reciprocating engines or similar machines
F01M 9/10 - Lubrication of valve gear or auxiliaries
A piston arrangement including a track and a piston moveable within a cylinder; wherein the track is adapted to rotate relative to the cylinder about an axis of rotation and has a cam surface and an edge surface extending away from the cam surface; wherein the piston is coupled to the track by a follower running on the cam surface; wherein the cam surface is shaped such that, as the track moves relative to the cylinder, the piston head moves in reciprocating motion within the cylinder in accordance with the path of the cam surface; wherein a stabilising element is connected to the piston, the stabilising element extending below the piston head and comprising a contact surface which engages the edge surface of the track.
F01B 9/06 - Reciprocating-piston machines or engines characterised by connections between pistons and main shafts, not specific to groups with rotary main shaft other than crankshaft the piston motion being transmitted by curved surfaces
F16M 1/02 - Frames or casings of engines, machines, or apparatusFrames serving as machinery beds for reciprocating engines or similar machines
F01M 9/10 - Lubrication of valve gear or auxiliaries
An internal combustion engine has a casing and a piston arrangement including a piston coupled to a track. The track is coupled to a shaft and has an inner cam surface and an outer cam surface. The piston is coupled to the track by followers which run on the respective inner and outer cam surfaces of the track to control motion of the piston. A sliding element is connected to the piston, the sliding element extending below the piston head and having a profiled slider surface which engages a corresponding profile in the casing. The followers are mounted on the sliding element. Also, the casing includes at least two plates having a cutout for receiving the track and a bore for receiving the shaft, and at least two end plates coupled transverse to the plates. At least one cylinder bore is formed in the end plates, and the piston is arranged to move in reciprocating motion in the cylinder bore.
F01B 5/00 - Reciprocating-piston machines or engines with cylinder axes arranged substantially tangentially to a circle centred on main shaft axis
F01B 9/06 - Reciprocating-piston machines or engines characterised by connections between pistons and main shafts, not specific to groups with rotary main shaft other than crankshaft the piston motion being transmitted by curved surfaces
F16H 25/14 - Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for interconverting rotary motion and reciprocating motion with reciprocation perpendicular to the axis of rotation
An internal combustion engine has a casing and a piston arrangement including a piston coupled to a track. The track is coupled to a shaft and has an inner cam surface and an outer cam surface. The piston is coupled to the track by followers which run on the respective inner and outer cam surfaces of the track to control motion of the piston. A sliding element is connected to the piston, the sliding element extending below the piston head and having a profiled slider surface which engages a corresponding profile in the casing. The followers are mounted on the sliding element. Also, the casing includes at least two plates having a cutout for receiving the track and a bore for receiving the shaft, and at least two end plates coupled transverse to the plates. At least one cylinder bore is formed in the end plates, and the piston is arranged to move in reciprocating motion in the cylinder bore.
F01B 5/00 - Reciprocating-piston machines or engines with cylinder axes arranged substantially tangentially to a circle centred on main shaft axis
F01B 9/06 - Reciprocating-piston machines or engines characterised by connections between pistons and main shafts, not specific to groups with rotary main shaft other than crankshaft the piston motion being transmitted by curved surfaces
F16H 25/14 - Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for interconverting rotary motion and reciprocating motion with reciprocation perpendicular to the axis of rotation
A piston arrangement is provided. The piston assembly includes a track and a piston moveable within a cylinder. The track is rotatable relative to the cylinder about an axis of rotation and has a cam surface and an edge surface extending away from the cam surface. The piston is coupled to the track by a follower running on the cam surface. The cam surface is shaped such that, as the track moves relative to the cylinder, the piston head moves in reciprocating motion within the cylinder along a piston axis in accordance with the path of the cam surface. The piston axis is perpendicular to the track axis of rotation. A stabilizing element is connected to the piston, the stabilizing element extending below the piston head and comprising a contact surface which engages the edge surface of the track.
F01B 9/06 - Reciprocating-piston machines or engines characterised by connections between pistons and main shafts, not specific to groups with rotary main shaft other than crankshaft the piston motion being transmitted by curved surfaces
F01M 9/10 - Lubrication of valve gear or auxiliaries
A piston arrangement comprising a cylinder, a piston head movable along a piston axis within the cylinder, a con rod, and a track having a path; wherein the con rod has a first end which is coupled to the piston head and a second end which is coupled to the track; wherein the track is adapted to be moved relative to the cylinder and is shaped such that, as the track moves relative to the cylinder, the piston head moves in reciprocating motion along the piston axis in accordance with the path of the track; wherein the path of the track is shaped such that piston head displacement is non simple harmonic with respect to displacement of the track relative to the cylinder. Also an internal combustion engine including the piston arrangement.
F02B 25/00 - Engines characterised by using fresh charge for scavenging cylinders
F02B 75/04 - Engines with variable distances between pistons at top dead-centre positions and cylinder heads
F02B 25/20 - Means for reducing the mixing of charge and combustion residues or for preventing escape of fresh charge through outlet ports, not provided for in, or of interest apart from, groups
F02B 33/22 - Engines with reciprocating-piston pumpsEngines with crankcase pumps with reciprocating-piston pumps other than simple crankcase pumps with pumping cylinder situated at side of working cylinder, e.g. the cylinders being parallel
F02B 47/02 - Methods of operating engines involving adding non-fuel substances or anti-knock agents to combustion air, fuel, or fuel-air mixtures of engines the substances being water or steam
F01B 9/06 - Reciprocating-piston machines or engines characterised by connections between pistons and main shafts, not specific to groups with rotary main shaft other than crankshaft the piston motion being transmitted by curved surfaces
F02B 75/28 - Engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders
A piston arrangement including a track and a piston moveable within a cylinder; wherein the track is adapted to rotate relative to the cylinder about an axis of rotation and has a cam surface and an edge surface extending away from the cam surface; wherein the piston is coupled to the track by a follower running on the cam surface; wherein the cam surface is shaped such that, as the track moves relative to the cylinder, the piston head moves in reciprocating motion within the cylinder in accordance with the path of the cam surface; wherein a stabilising element is connected to the piston, the stabilising element extending below the piston head and comprising a contact surface which engages the edge surface of the track.
F01B 9/06 - Reciprocating-piston machines or engines characterised by connections between pistons and main shafts, not specific to groups with rotary main shaft other than crankshaft the piston motion being transmitted by curved surfaces
A piston arrangement including a track and a piston moveable within a cylinder; wherein the track is adapted to rotate relative to the cylinder about an axis of rotation and has a cam surface and an edge surface extending away from the cam surface; wherein the piston is coupled to the track by a follower running on the cam surface; wherein the cam surface is shaped such that, as the track moves relative to the cylinder, the piston head moves in reciprocating motion within the cylinder in accordance with the path of the cam surface; wherein a stabilising element is connected to the piston, the stabilising element extending below the piston head and comprising a contact surface which engages the edge surface of the track.
F01B 9/06 - Reciprocating-piston machines or engines characterised by connections between pistons and main shafts, not specific to groups with rotary main shaft other than crankshaft the piston motion being transmitted by curved surfaces
F04B 1/0531 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the inner ends of the cylinders with cam-actuated distribution members
A piston arrangement including a track and a piston moveable within a cylinder; wherein the track is adapted to rotate relative to the cylinder about an axis of rotation and has a cam surface and an edge surface extending away from the cam surface; wherein the piston is coupled to the track by a follower running on the cam surface; wherein the cam surface is shaped such that, as the track moves relative to the cylinder, the piston head moves in reciprocating motion within the cylinder in accordance with the path of the cam surface; wherein a stabilising element is connected to the piston, the stabilising element extending below the piston head and comprising a contact surface which engages the edge surface of the track.
F01B 9/06 - Reciprocating-piston machines or engines characterised by connections between pistons and main shafts, not specific to groups with rotary main shaft other than crankshaft the piston motion being transmitted by curved surfaces
F04B 1/0531 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the inner ends of the cylinders with cam-actuated distribution members
ABSTRACT A piston arrangement comprising a cylinder, a piston head movable along a piston axis within the cylinder, a con rod, and a track having a path; wherein the con rod has a first end which is coupled to the piston head and a second end which is coupled to the track; wherein the track is adapted to be moved relative to the cylinder and is shaped such that, as the track moves relative to the cylinder, the piston head moves in reciprocating motion along the piston axis in accordance with the path of the track; wherein the path of the track is shaped such that piston head displacement is non simple harmonic with respect to displacement of the track relative to the cylinder. Also, an internal combustion engine including the piston arrangement. CPST Doc: 333667.1 Date Recue/Date Received 2021-02-16
F01B 9/06 - Reciprocating-piston machines or engines characterised by connections between pistons and main shafts, not specific to groups with rotary main shaft other than crankshaft the piston motion being transmitted by curved surfaces
F02B 25/20 - Means for reducing the mixing of charge and combustion residues or for preventing escape of fresh charge through outlet ports, not provided for in, or of interest apart from, groups
F02B 33/22 - Engines with reciprocating-piston pumpsEngines with crankcase pumps with reciprocating-piston pumps other than simple crankcase pumps with pumping cylinder situated at side of working cylinder, e.g. the cylinders being parallel
F02B 47/02 - Methods of operating engines involving adding non-fuel substances or anti-knock agents to combustion air, fuel, or fuel-air mixtures of engines the substances being water or steam
F02B 75/28 - Engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders
A piston arrangement comprising a cylinder, a piston head movable along a piston axis within the cylinder, a con rod, and a track having a path; wherein the con rod has a first end which is coupled to the piston head and a second end which is coupled to the track; wherein the track is adapted to be moved relative to the cylinder and is shaped such that, as the track moves relative to the cylinder, the piston head moves in reciprocating motion along the piston axis in accordance with the path of the track; wherein the path of the track is shaped such that piston head displacement is non simple harmonic with respect to displacement of the track relative to the cylinder. Also an internal combustion engine including the piston arrangement.
F01B 9/06 - Reciprocating-piston machines or engines characterised by connections between pistons and main shafts, not specific to groups with rotary main shaft other than crankshaft the piston motion being transmitted by curved surfaces
F02B 33/22 - Engines with reciprocating-piston pumpsEngines with crankcase pumps with reciprocating-piston pumps other than simple crankcase pumps with pumping cylinder situated at side of working cylinder, e.g. the cylinders being parallel
F02B 75/28 - Engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders
F02B 47/02 - Methods of operating engines involving adding non-fuel substances or anti-knock agents to combustion air, fuel, or fuel-air mixtures of engines the substances being water or steam
A piston arrangement comprising a cylinder, a piston head movable along a piston axis within the cylinder, a con rod, and a track having a path; wherein the con rod has a first end which is coupled to the piston head and a second end which is coupled to the track; wherein the track is adapted to be moved relative to the cylinder and is shaped such that, as the track moves relative to the cylinder, the piston head moves in reciprocating motion along the piston axis in accordance with the path of the track; wherein the path of the track is shaped such that piston head displacement is non simple harmonic with respect to displacement of the track relative to the cylinder. Also an internal combustion engine including the piston arrangement.
F01B 9/06 - Reciprocating-piston machines or engines characterised by connections between pistons and main shafts, not specific to groups with rotary main shaft other than crankshaft the piston motion being transmitted by curved surfaces
F02B 25/20 - Means for reducing the mixing of charge and combustion residues or for preventing escape of fresh charge through outlet ports, not provided for in, or of interest apart from, groups
F02B 33/22 - Engines with reciprocating-piston pumpsEngines with crankcase pumps with reciprocating-piston pumps other than simple crankcase pumps with pumping cylinder situated at side of working cylinder, e.g. the cylinders being parallel
F02B 47/02 - Methods of operating engines involving adding non-fuel substances or anti-knock agents to combustion air, fuel, or fuel-air mixtures of engines the substances being water or steam
F02B 75/28 - Engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders
A piston arrangement comprising a cylinder, a piston head movable along a piston axis within the cylinder, a con rod, and a track having a path; wherein the con rod has a first end which is coupled to the piston head and a second end which is coupled to the track; wherein the track is adapted to be moved relative to the cylinder and is shaped such that, as the track moves relative to the cylinder, the piston head moves in reciprocating motion along the piston axis in accordance with the path of the track; wherein the path of the track is shaped such that piston head displacement is non simple harmonic with respect to displacement of the track relative to the cylinder. Also, an internal combustion engine including the piston arrangement.
F01B 9/06 - Reciprocating-piston machines or engines characterised by connections between pistons and main shafts, not specific to groups with rotary main shaft other than crankshaft the piston motion being transmitted by curved surfaces
F01B 1/06 - Reciprocating-piston machines or engines characterised by number or relative disposition of cylinders or by being built-up from separate cylinder-crankcase elements with cylinders in star or fan arrangement
F02B 25/20 - Means for reducing the mixing of charge and combustion residues or for preventing escape of fresh charge through outlet ports, not provided for in, or of interest apart from, groups
F02B 33/22 - Engines with reciprocating-piston pumpsEngines with crankcase pumps with reciprocating-piston pumps other than simple crankcase pumps with pumping cylinder situated at side of working cylinder, e.g. the cylinders being parallel
F02B 47/02 - Methods of operating engines involving adding non-fuel substances or anti-knock agents to combustion air, fuel, or fuel-air mixtures of engines the substances being water or steam
F02B 75/28 - Engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders
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