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A rotary internal combustion engine comprising a cylinder bore in a stator sealed between parallel end walls; a power shaft concentric with the cylinder bore journaled in bearings in the end walls; an annular eccentric piston fixed onto the engine shaft just clearing the end walls and the cylinder a

A rotary internal combustion engine comprising a cylinder bore in a stator sealed between parallel end walls; a power shaft concentric with the cylinder bore journaled in bearings in the end walls; an annular eccentric piston fixed onto the engine shaft just clearing the end walls and the cylinder as it rotates. A first abutment with one end pivotally anchored in the stator near 10:00 o\clock, the other end projecting clockwise and free to swing vertically in the cylinder space, seals the space between the cylinder and the piston from end wall to end wall, forming the counter-clockwise end of a combustion-expansion chamber. A second abutment, pivotally anchored in the stator near 2:00 o\clock, its free end projecting counter-clockwise and sealing the space between the cylinder and piston from end wall to end wall, forms the clockwise end of the combustion-expansion chamber. Both abutments are spring biased downward toward the piston. The combustion chamber, centered near 12:00 o\clock, comprises a shallow arcuate cavity adjacent the path of the piston, opening into and combining with the cylinder space. Fuel injection means for the invention engine is mounted preferably in the engine head. An air intake port is positioned in the vicinity of 3:00 o\clock to admit air into a compression chamber formed ahead of the rotating eccentric piston, the air pressure to lift the free end of the first abutment to allow the piston head to sweep a charge of air into the combustion chamber. Exhaust means comprises preferably at least one poppet valve per cylinder positioned in the engine head.

대표청구항 ▼

A rotary internal combustion engine having the four-phase cycle of intake, compression, expansion and exhaust with each revolution of the engine shaft, the engine comprising: a stator with a cylinder bore sealed between parallel end walls; an engine shaft journaled in bearings in the end walls, conc

A rotary internal combustion engine having the four-phase cycle of intake, compression, expansion and exhaust with each revolution of the engine shaft, the engine comprising: a stator with a cylinder bore sealed between parallel end walls; an engine shaft journaled in bearings in the end walls, concentric with the cylinder bore; an eccentric annular rotary piston fixed to the engine shaft, the piston substantially coextensive with the end walls, its head fitted with a spring-biased wiper vane in a transverse slot to yieldably sweep the cylinder to push air ahead of it throughout a compression stroke; a combustion-expansion chamber comprising a shallow arcuate cavity in the upper part of the stator centered near 12:00 o\clock, adjacent to the path of the piston head, communicating with the cylinder space; a first abutment having a first end pivotally secured to the stator near 10:00 o\clock and a second end projecting clockwise and free to swing vertically in the cylinder space, the abutment long enough to make tangential sealing engagement with the piston in all positions of the piston, the under side of the abutment arcuate on a radius not shorter than that of the cylinder; a second abutment having a first end pivotally secured to the stator near 2:00 o\clock and a second end projecting counter-clockwise in the cylinder space, the abutment free to swing vertically in the cylinder and long enough to make tangential sealing engagement with the piston in all positions of the piston, the under side of the abutment arcuate on a radius short enough to insure that the piston head, while passing under the abutment, not lift the free end of the abutment off the face of the piston; both first and second abutments making sliding sealing engagement with both end walls and with the piston to enclose the combustion chamber above them to insure that during combustion, the expanding gases bear down on the three elements to cause the eccentric piston head to rotate, turning the engine shaft; each abutment spring biased downward toward the piston by a spring outside the engine wall, the spring based on a lug cast on the wall and bearing upward against a lever which lever is keyed to an extension of the abutment pivot through the end wall, to which pivot the abutment is also fixed; spring tension on the first abutment adjusted to allow the free end of that abutment to be forced upward off the face of the piston by compressed air in front of the piston head promptly after an exhaust valve opens inside the combustion-expansion chamber, the upward lifted abutment end constituting an inlet port to allow air to be compressed directly into the combustion chamber; at least one inlet port fitted with at least one one-way inlet valve to admit air to the cylinder; exhaust means comprising at least one poppet valve positioned in the engine head to open into the expansion chamber at the end of a power stroke to allow the engine to be scavenged of spent gases, the valve timed to close in time to allow the combustion chamber to catch the next charge of compressed air; means for introducing a charge of fuel into the combustion chamber in timed relation to the position of the piston head, the means constituting a fuel injector installed to project into the combustion chamber; means for firing the fuel charge as it is injected, the means comprising a spark plug, positioned in close proximity to the fuel injector; each of the two abutments enlarged on its upper face at its pivoted end to reshape the combustion-expansion chamber to confine the combustion gases more centrally over the free ends of the abutments to partially reduce the downward pressure of combustion on the abutment, to reduce friction where the free end of the abutment rides on the face of the rotating piston, each enlargement comprising a section of a drum-shaped cylinder virtually coextensive with the end walls and parallel to and concentric with its respective pivot; a close-fitting cavity machined in the stator for each abutment enlargement, to receive the enlargement as it is forced upward by the piston during the compression stroke.