A split-cycle engine includes: a compression chamber, housing a first piston, that induces and compresses working fluid; an expansion chamber, housing a second piston, that expands and exhausts the working fluid; and a transfer chamber, housing a third piston and a fourth piston, wherein the third piston and the fourth piston move relatively to vary a volume within the transfer chamber and to selectively fluidly couple the volume within the transfer chamber to the compression chamber and the expansion chamber. A method of operating an engine includes: inducing working fluid in a first chamber; compressing the working fluid in the first chamber; moving a first moveable boundary of a second chamber; moving a second moveable boundary of the second chamber; expanding the working fluid in the third chamber; and exhausting the working fluid from the third chamber.
A split-cycle engine includes: a first cylinder housing a first piston, wherein the first piston performs an intake stroke and a compression stroke, but does not perform an exhaust stroke; a second cylinder housing a second piston, wherein the second piston performs an expansion stroke and an exhaust stroke, but does not perform an intake stroke; and a valve chamber housing a valve, the valve comprising an internal chamber that selectively fluidly couples to the first and second cylinders, wherein the valve and internal chamber move within the valve chamber and relative to the first and second cylinders.
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
F01L 1/46 - Component parts, details, or accessories, not provided for in preceding subgroups
F01L 7/16 - Sealing or packing arrangements specially therefor
F01L 7/02 - Rotary or oscillatory slide-valve gear or valve arrangements with cylindrical, sleeve, or part-annularly-shaped valves
F01P 1/02 - Arrangements for cooling cylinders or cylinder heads, e.g. ducting cooling-air from its pressure source to cylinders or along cylinders
F01P 3/02 - Arrangements for cooling cylinders or cylinder heads
F01P 7/16 - Controlling of coolant flow the coolant being liquid by thermostatic control
A split-cycle engine includes: a compression chamber, housing a first piston, that induces and compresses working fluid; an expansion chamber, housing a second piston, that expands and exhausts the working fluid; and a transfer chamber, housing a third piston and a fourth piston, wherein the third piston and the fourth piston move relatively to vary a volume within the transfer chamber and to selectively fluidly couple the volume within the transfer chamber to the compression chamber and the expansion chamber. A method of operating an engine includes: inducing working fluid in a first chamber; compressing the working fluid in the first chamber; moving a first moveable boundary of a second chamber; moving a second moveable boundary of the second chamber; expanding the working fluid in the third chamber; and exhausting the working fluid from the third chamber.
A split-cycle engine includes: a first cylinder housing a first piston, wherein the first piston performs an intake stroke and a compression stroke, but does not perform an exhaust stroke; a second cylinder housing a second piston, wherein the second piston performs an expansion stroke and an exhaust stroke, but does not perform an intake stroke; and a valve chamber housing a valve, the valve comprising an internal chamber that selectively fluidly couples to the first and second cylinders, wherein the valve and internal chamber move within the valve chamber and relative to the first and second cylinders.
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
F01L 7/02 - Rotary or oscillatory slide-valve gear or valve arrangements with cylindrical, sleeve, or part-annularly-shaped valves
F01L 1/46 - Component parts, details, or accessories, not provided for in preceding subgroups
F01L 7/16 - Sealing or packing arrangements specially therefor
F01P 1/02 - Arrangements for cooling cylinders or cylinder heads, e.g. ducting cooling-air from its pressure source to cylinders or along cylinders
F01P 3/02 - Arrangements for cooling cylinders or cylinder heads
F01P 7/16 - Controlling of coolant flow the coolant being liquid by thermostatic control
A split-cycle internal combustion engine (ICE) is provided, comprising a compression cylinder, an expansion cylinder and a crossover valve having a valve cylinder housing inside a shuttle and a combustion chamber structure defining a combustion chamber. The shuttle is configured to perform reciprocating motion inside the valve cylinder synchronously with a compression piston and an expansion piston, thereby alternatingly fluidly coupling and decoupling the combustion chamber with the compression cylinder and with the expansion cylinder, selectively. Sealing rings positioned between the valve cylinder and the shuttle prevent gas leaks between them during the reciprocating motion. In some embodiments, a phase shift between the pistons may be set or varied by a piston phase transmission gear. A bi-directional fluid flow split-cycle internal combustion engine (ICE) is also provided having a first cylinder, a second cylinder, a combustion chamber and a single crossover valve fluidly communicating them.
F01L 5/04 - Slide-valve gear or valve arrangements with cylindrical, sleeve, or part-annularly-shaped valves
F01L 7/02 - Rotary or oscillatory slide-valve gear or valve arrangements with cylindrical, sleeve, or part-annularly-shaped valves
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 33/44 - Passages conducting the charge from the pump to the engine inlet, e.g. reservoirs
F02B 41/06 - Engines with prolonged expansion in compound cylinders
6.
Spool shuttle crossover valve and combustion chamber in split-cycle engine
A split-cycle engine includes: a first cylinder housing a first piston, wherein the first piston performs an intake stroke and a compression stroke, but does not perform an exhaust stroke; a second cylinder housing a second piston, wherein the second piston performs an expansion stroke and an exhaust stroke, but does not perform an intake stroke; and a valve chamber housing a valve, the valve comprising an internal chamber that selectively fluidly couples to the first and second cylinders, wherein the valve and internal chamber move within the valve chamber and relative to the first and second cylinders.
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
F02P 13/00 - Sparking plugs structurally combined with other parts of internal-combustion engines
F01L 1/46 - Component parts, details, or accessories, not provided for in preceding subgroups
F01L 7/02 - Rotary or oscillatory slide-valve gear or valve arrangements with cylindrical, sleeve, or part-annularly-shaped valves
F01L 7/16 - Sealing or packing arrangements specially therefor
F01P 1/02 - Arrangements for cooling cylinders or cylinder heads, e.g. ducting cooling-air from its pressure source to cylinders or along cylinders
F01P 3/02 - Arrangements for cooling cylinders or cylinder heads
F01P 7/16 - Controlling of coolant flow the coolant being liquid by thermostatic control
An engine includes a compression chamber that intakes and compresses working fluid; an expansion chamber that expands and exhausts working fluid; and a transfer chamber that receives working fluid from the compression chamber and transfers working fluid to the expansion chamber, wherein an internal volume of the transfer chamber decreases during the transfer of working fluid.
F01L 5/04 - Slide-valve gear or valve arrangements with cylindrical, sleeve, or part-annularly-shaped valves
F01L 5/06 - Slide-valve gear or valve arrangements with cylindrical, sleeve, or part-annularly-shaped valves surrounding working cylinder or piston
F02G 1/02 - Hot gas positive-displacement engine plants of open-cycle type
F02G 1/043 - Hot gas positive-displacement engine plants of closed-cycle type the engine being operated by expansion and contraction of a mass of working gas which is heated and cooled in one of a plurality of constantly communicating expansible chambers, e.g. Stirling cycle type engines
An internal combustion engine, including a combustion chamber with a first aperture; a compression chamber with a second aperture; and a crossover valve comprising an internal chamber, first and second valve seats, a valve head, and first and second valve faces on the valve head, wherein the first aperture allows fluid communication between the combustion chamber and the internal chamber, the second aperture allows fluid communication between the compression chamber and the internal chamber, the first valve face couples to the first valve seat to occlude the first aperture, and the second valve face couples to the second valve seat to occlude the second aperture.
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 33/18 - Engines with reciprocating-piston pumpsEngines with crankcase pumps with reciprocating-piston pumps other than simple crankcase pumps with crankshaft being arranged between working and pumping cylinders
F02B 19/18 - Transfer passages between chamber and cylinder
F02B 19/02 - Engines characterised by precombustion chambers the chamber being periodically isolated from its cylinder
A split-cycle internal combustion engine (ICE) is provided, comprising a compression cylinder, an expansion cylinder and a crossover valve having a valve cylinder housing inside a shuttle and a combustion chamber structure defining a combustion chamber. The shuttle is configured to perform reciprocating motion inside the valve cylinder synchronously with a compression piston and an expansion piston, thereby alternatingly fluidly coupling and decoupling the combustion chamber with the compression cylinder and with the expansion cylinder, selectively. Sealing rings positioned between the valve cylinder and the shuttle prevent gas leaks between them during the reciprocating motion. In some embodiments, a phase shift between the pistons may be set or varied by a piston phase transmission gear. A bi-directional fluid flow split-cycle internal combustion engine (ICE) is also provided having a first cylinder, a second cylinder, a combustion chamber and a single crossover valve fluidly communicating them. A three-cylinders split-cycle internal combustion engine (ICE) is also provided, having a compression cylinder and a combustion chamber, wherein a single crossover valve alternatingly fluidly couples the combustion chamber to two or more expansion cylinders.
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
10.
Spool shuttle crossover valve in split-cycle engine
A split-cycle engine includes: a first cylinder housing a first piston, wherein the first piston performs an intake stroke and a compression stroke, but does not perform an exhaust stroke; a second cylinder housing a second piston, wherein the second piston performs an expansion stroke and an exhaust stroke, but does not perform an intake stroke; and a valve chamber housing a valve, the valve comprising an internal chamber that selectively fluidly couples to the first and second cylinders, wherein the valve and internal chamber move within the valve chamber and relative to the first and second cylinders.
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
F01L 7/02 - Rotary or oscillatory slide-valve gear or valve arrangements with cylindrical, sleeve, or part-annularly-shaped valves
F01L 1/46 - Component parts, details, or accessories, not provided for in preceding subgroups
F01L 7/16 - Sealing or packing arrangements specially therefor
An engine includes a compression chamber that intakes and compresses working fluid; an expansion chamber that expands and exhausts working fluid; and a transfer chamber that receives working fluid from the compression chamber and transfers working fluid to the expansion chamber, wherein an internal volume of the transfer chamber decreases during the transfer of working fluid.
F01L 5/16 - Slide-valve gear or valve arrangements characterised by the provision of valves with reciprocating and other movements with reciprocating and other movement of same valve, e.g. longitudinally and in cross direction of working cylinder
12.
SPOOL SHUTTLE CROSSOVER VALVE IN SPLIT-CYCLE ENGINE
A split-cycle engine includes: a first cylinder housing a first piston, wherein the first piston performs an intake stroke and a compression stroke, but does not perform an exhaust stroke; a second cylinder housing a second piston, wherein the second piston performs an expansion stroke and an exhaust stroke, but does not perform an intake stroke; and a valve chamber housing a valve, the valve comprising an internal chamber that selectively fluidly couples to the first and second cylinders, wherein the valve and internal chamber move within the valve chamber and relative to the first and second cylinders.
F01L 5/16 - Slide-valve gear or valve arrangements characterised by the provision of valves with reciprocating and other movements with reciprocating and other movement of same valve, e.g. longitudinally and in cross direction of working cylinder
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
An internal combustion engine, including a combustion chamber with a first aperture; a compression chamber with a second aperture; and a crossover valve comprising an internal chamber, first and second valve seats, a valve head, and first and second valve faces on the valve head, wherein the first aperture allows fluid communication between the combustion chamber and the internal chamber, the second aperture allows fluid communication between the compression chamber and the internal chamber, the first valve face couples to the first valve seat to occlude the first aperture, and the second valve face couples to the second valve seat to occlude the second aperture.
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 33/18 - Engines with reciprocating-piston pumpsEngines with crankcase pumps with reciprocating-piston pumps other than simple crankcase pumps with crankshaft being arranged between working and pumping cylinders
F02B 19/18 - Transfer passages between chamber and cylinder
F02B 19/02 - Engines characterised by precombustion chambers the chamber being periodically isolated from its cylinder
An internal combustion engine, including a combustion chamber with a first aperture; a compression chamber with a second aperture; and a crossover valve comprising an internal chamber, first and second valve seats, a valve head, and first and second valve faces on the valve head, wherein the first aperture allows fluid communication between the combustion chamber and the internal chamber, the second aperture allows fluid communication between the compression chamber and the internal chamber, the first valve face couples to the first valve seat to occlude the first aperture, and the second valve face couples to the second valve seat to occlude the second aperture.
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
F16K 21/04 - Self-closing valves, i.e. closing automatically after operation
F02B 19/18 - Transfer passages between chamber and cylinder
An interstage valve for fluidly coupling two chambers of a double-piston engine is disclosed. The interstage valve may include a main valve body, a seal, and an electric coil. When closed, the seal is coupled to the main valve body as a result of electromagnetic forces generated by the electrical coil. The interstage valve is opened when the pressure differential between the engine chambers exceeds the electromagnetic forces. As the interstage valve opens, the electromagnetic forces diminish. The electromagnetic valve moves from the open state to the closed state when the pressure differential reverses. As the seal moves toward the main valve body, the electromagnetic forces increase, coupling the seal to the main valve body.
patents
