An internal combustion engine is provided. Facing pistons eliminate a cylinder head, thereby reducing heat losses through a cylinder head. Facing pistons also halve the stroke that would be required for one piston to provide the same compression ratio, and the engine can thus be run at higher revolu
An internal combustion engine is provided. Facing pistons eliminate a cylinder head, thereby reducing heat losses through a cylinder head. Facing pistons also halve the stroke that would be required for one piston to provide the same compression ratio, and the engine can thus be run at higher revolutions per minute and produce more power. An internal sleeve valve is provided for space and other considerations. A combustion chamber size-varying mechanism allows for adjustment of the minimum size of an internal volume to increase efficiency at partial-power operation. Variable intake valve operation is used to control engine power.
대표청구항▼
What is claimed: 1. An internal combustion engine, comprising: a body defining first and second cylinders in communication with one another; first and second pistons in the first and second cylinders respectively, surfaces of the pistons and walls of the cylinders defining an internal volume; at le
What is claimed: 1. An internal combustion engine, comprising: a body defining first and second cylinders in communication with one another; first and second pistons in the first and second cylinders respectively, surfaces of the pistons and walls of the cylinders defining an internal volume; at least one port in the body to allow air and fuel into and exhaust gas out of the internal volume; first and second drive shafts, each having a bearing section mounted for rotation on a respective drive shaft axis through the body and each having an offset throw section, the first piston and offset throw section of the first drive shaft being connected and second piston and the offset throw section of the second drive shaft being connected such that reciprocating movement of the first and second pistons increases and decreases a size of the internal volume between minimum and maximum sizes and causes rotation of the offset throw sections of the first and second drive shafts about the drive shaft axes, the minimum size of the internal volume being adjustable between a large size for a large power delivery and a small size for a small power delivery; and at least one valve mounted to the body to respectively open and close the port and respectively allow and restrict flow of at least the air into the internal volume, the valve being operable to allow an increased amount of air into the internal volume during the large power delivery and a decreased amount of air during the small power delivery for one cycle of the pistons. 2. The internal combustion engine of claim 1, further comprising: a combustion chamber size-varying mechanism that adjusts a position of the bearing section of the second drive shaft relative to the body. 3. The internal combustion engine of claim 2, wherein the combustion chamber size-varying mechanism synchronizes rotation of the drive shafts relative to one another. 4. The internal combustion engine of claim 3, wherein the combustion chamber size-varying mechanism includes a gear train of first, second, third, and fourth gears, the first and fourth gears being mounted to the first and second drive shafts, respectively, so that the first and fourth gears rotate together with the first and second drive shafts about the first and second drive shaft axes, respectively, and a combustion chamber size-varying carriage that is connected to the second drive shaft, the carriage being movable to rotate the second drive shaft axis about an axis rotation of the third gear. 5. The internal combustion engine of claim 1, further comprising a valve-control system that adjusts an amount of air that enters the internal volume, more air being provided for the large power delivery, and less air being provided for the small power delivery, the valve-control system also shifting a phase of air being delivered to the internal volume between the large power deliver and the small power deliver, relative to a phase of the first drive shaft. 6. The internal combustion engine of claim 5, wherein the valve-control system includes: a support structure; a carriage mounted for movement to the support structure; a cam rotatably mounted to the carriage and having an outer cam surface; a first follower held by the support structure, the first follower having an end surface against the cam surface so that the rotation of the cam causes translation of the first follower, the first follower having a side cam surface; and a second follower having a following surface against the side cam surface so that translation of the first follower causes movement of the second follower. 7. The internal combustion engine of claim 1, wherein the valve is a sleeve valve, at least partially around the first piston and being movably between a first position wherein the port is open and a second position wherein the sleeve valve closes the port. 8. The internal combustion engine of claim 7, wherein the sleeve valve moves in a primarily linear reciprocating path between the first position, where the port is open, and the second position, where the sleeve valve closes the port. 9. The internal combustion engine of claim 7, wherein the port has a mouth with a seat and the sleeve valve has a surface at an angle other than zero degrees relative to a direction that the sleeve valve travels, the end surface engaging with the seat to close the port. 10. The internal combustion engine of claim 7, further comprising a valve-cooling piece that, together with an outer surface of the sleeve valve, defines a valve-cooling passage through which a valve-cooling fluid can pass to cool the sleeve valve. 11. An internal combustion engine, comprising: a body defining first and second cylinders; first and second pistons in the first and second cylinders respectively, surfaces of the pistons and walls of the cylinders defining an internal volume; at least one port in the body to allow air and fuel into and exhaust gas out of the internal volume; and first and second drive shafts, each having a bearing section rotatably mounted to the body and each having an offset throw section the first piston and offset throw section of the first drive shaft being connected and the second piston and the offset throw section of the second drive shaft being connected, such that reciprocating movement of the first and second pistons causes rotation of the offset throw sections of the first and second drive shafts about drive shaft axes of the first and second bearing sections respectively, a distance between the drive shaft axes being adjustable to adjust a minimum size of the internal volume. 12. A valve-control system, comprising: a support structure; a valve-control carriage mounted for movement to the support structure; a cam rotatably mounted to the carriage and having an outer cam surface; a first follower held by the support structure, the first follower having an end surface against the cam surface so that rotation of the cam causes translation of the first follower, the first follower having a side cam surface; and a second follower having a following surface against the side cam surface so that translation of the first follower causes movement of the second follower. 13. An internal combustion engine, comprising: a body defining a cylinder; a piston in the cylinder, a surface of the piston and a wall of the cylinder defining an internal volume; at least one port in the body to allow air and fuel into and exhaust gas out of the internal volume; a sleeve valve at least partially around the piston and being movable between a first position where the port is open and a second position where the sleeve valve closes the port; an oil path-defining piece adjacent to the sleeve valve, surfaces of the oil path-defining piece and the sleeve valve defining an oil passage such that heat transfers from the sleeve valve to oil in the oil passage primarily due to convection of heat directly from the sleeve valve to the oil; an oil inlet port through the body into the passage; an oil outlet port from the oil passage through the body; and a drive shaft having a bearing section rotatably mounted to the body and an offset throw section the piston and the offset throw section of the drive shaft being connected, such that reciprocating movement of the piston causes rotation of the offset throw section of the drive shaft about a drive shaft axis of the drive shaft. 14. An internal combustion engine, comprising: a body defining a cylinder, a fuel supply cavity, and a fuel outlet port connecting the fuel supply cavity to the cylinder; a piston in the cylinder, a surface of the piston and a wall of the cylinder defining an internal volume; at least one air inlet port in the body to allow air into the internal volume; a valve which is movable between a first position wherein the air inlet port and fuel outlet port are open, and a second position where the valve closes the air inlet port and fuel outlet port; and a drive shaft having a bearing section rotatably mounted to the body and an offset throw section, the piston and the offset throw section of the drive shaft being connected such that reciprocating movement of the piston causes rotation of the offset throw section of the drive shaft about a drive shaft axis. 15. An internal combustion engine, comprising: a body defining a cylinder, a piston held in the cylinder such that an internal volume is defined by a wall of the cylinder and a surface of the piston; at least one port in the body, to allow air and fuel into the internal volume and exhaust gas out of the internal volume; a drive shaft having a bearing section rotatably mounted to the body and an offset throw section, the piston and the offset throw section of the drive shaft being connected, such that reciprocating movement of the piston causes rotation of the offset throw section of the drive shaft about the drive shaft axis of the drive shaft; a valve which is movable between a first position where the port is open and a second position where the valve closes the port; a component connected to the valve, the component having a surface which, when pressure is applied thereto, moves the valve into the second position; a valve-pressure reservoir, having a side piece; a high-pressure reservoir containing fluid at a higher pressure than the valve-pressure reservoir; and a valve that is movable between a first position wherein the high-pressure reservoir is connected to the surface and the valve-pressure reservoir is disconnected from the surface, and a second position wherein the high-pressure reservoir is disconnected from the surface and the valve-pressure reservoir is connected to the surface.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (21)
Lowi ; Jr. Alvin (2146 Toscanini Dr. Rancho Palos Verde CA 90732), Adiabatic, two-stroke cycle engine having piston-phasing and compression ratio control system.
Bowman Timothy J. (Bexley MI GB3) LoRusso Julian A. (Grosse Ile MI) Kaufman Warren F. (Santa Ana CA), Hydraulic valve control system for internal combustion engines.
zur Loye Axel O. ; Akinyemi Omowoleola C. ; Durrett Russ P. ; Flynn Patrick F. ; Hunter Gary L. ; Moore Greg A. ; Mudd Jackie M. ; Muntean George G. ; Wagner Julie A. ; Wright John F., Premixed charge compression ignition engine with optimal combustion control.
Cleeves, James M.; Jackson, Simon David; Hawkes, Michael; Willcox, Michael A., Single piston sleeve valve with optional variable compression ratio capability.
Cleeves, James M., Variable compression ratio systems for opposed-piston and other internal combustion engines, and related methods of manufacture and use.
Cleeves, James Montague, Variable compression ratio systems for opposed-piston and other internal combustion engines, and related methods of manufacture and use.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.