摘要:
An axial flow rotary valve (1) for an internal combustion engine comprising a cylinder head (10) having a bore in which an axial flow rotary valve (1) rotates. The valve having a cylindrical centre portion (4), and an inlet and an exhaust port (2, 3) terminating as openings (7, 8) in the centre portion, the openings periodically communicating with a combustion chamber (23) through a window (15) in the bore. The clearance between the centre portion and the bore being sealed by an array of floating seals comprising at least two axial seals (16a, 16b) spaced apart on opposite sides of the window. The assembly further comprising at least one floating axially extending masking seal (5) being disposed outside the window and circumferentially remote from the axial seals.
摘要:
A method for providing a mixture of inlet air and exhaust gas in a cylinder of an internal combustion engine is disclosed. Fluid flow between the cylinder and a cylinder head associated therewith is controlled by at least one rotary valve accommodated in the cylinder head. The method includes rotating the at least one rotary valve to allow a fluid flow between the cylinder and the cylinder head in a first direction and to allow a fluid flow between the cylinder and the cylinder head in a second direction, opposite the first direction, wherein the fluid flow in the first direction and the fluid flow in the second direction are allowed during a single combustion cycle of the engine.
摘要:
A method for providing a mixture of inlet air and exhaust gas in a cylinder of an internal combustion engine is disclosed. Fluid flow between the cylinder and a cylinder head associated therewith is controlled by at least one rotary valve accommodated in the cylinder head. The method includes rotating the at least one rotary valve to allow a fluid flow between the cylinder and the cylinder head in a first direction and to allow a fluid flow between the cylinder and the cylinder head in a second direction, opposite the first direction, wherein the fluid flow in the first direction and the fluid flow in the second direction are allowed during a single combustion cycle of the engine.
摘要:
A axial flow rotary valve rotatable within a bore in a cylinder head (9) of an internal combustion engine has a port extending from a peripheral opening (4) to an axial opening at one end of the valve. The peripheral opening (4), which periodically communicates with a combustion chamber (30) through a window (8) in the bore, has a first trailing edge (13). The window (8) has a second trailing edge (12). The port closes from the combustion chamber (30) as the first trailing edge (13) passes the second trailing edge (12). The edges (12, 13) are disposed such that the instantaneous intersection point (17) of the two edges (12, 13) progressively moves away from the axial opening over at least 50% of the length of the window (8) as the port closes.
摘要:
A gas sealing element of an array of floating seals for a rotary valve internal combustion engine. The engine comprising a cylinder head (6) having a bore (8), a rotary valve (1) within the bore with a predetermined clearance, and a window (12) in the bore communicating with a combustion chamber. The sealing element (15) having an elongate form and having a sealing face (23), an underside (24) opposite said sealing face, and first and second side faces (25,26) opposite each other, the sealing element being adapted to be located in a slot (20) in the cylinder head bore. The side face (25) of the sealing element facing the window having at least one channel (17) extending from the sealing face to the underside of the sealing element.
摘要:
A sealing system for an axial flow rotary valve internal combustion engine comprising an array of floating gas seals and an optional oil sealing system. The array of floating seals surrounding a window (15) in the bore (11) of the cylinder head (10) through which the ports (2, 3) of the valve (1) communicate with a combustion chamber (31). The array of floating seals comprising axial seals (16) and circumferential seals (17) housed in slots (18, 19) in the bore of the cylinder head wherein the circumferential seals are disposed axially between the ends of the axial seals.
摘要:
The HELI-SHAFT intake exhaust manifold system is comprised of a shaft with two helical and parallel runners cutout around its length. Surrounding the shaft is a sleeve of the same length to enclose and separate the two runners. The intake runner has an opening at the front end of the shaft to provide an inlet for the air/fuel mixture to enter from the intake plenum. Exhaust gases exit the rear of the shaft through the exhaust opening; thus allowing the air/fuel mixture and exhaust gases to travel through the sleeved shaft following the runners in a parallel path. The shaft also provides locations for spark plugs to be inserted. The sleeve contains port openings located over each intake and exhaust runner positioned to provide alignment during rotation with individual combustion chambers aligned in a row matching both the firing order and cycle timing of the engine.
摘要:
A cylinder head (12) comprising a guideway in which is located a rotatable valve (10,12) comprising a fluid port operable to effect fluid communication between a cylinder and a fluid manifold in the guideway, whereby rotation of the valve effects alignment of the fluid port with the combustion chamber of a cylinder (4) to enable fluid flow between the valve (10, 12) and a cylinder (4), and wherein the cylinder head (2) further comprises a seal (22) which, in use, is movable from a first, non-sealing position in which the seal (22) is biased away from the valve (10, 12), and a second, sealing position in which the seal (22) is biased onto the valve by gaseous pressure from within a cylinder (4).
摘要:
A rotary valve system for a motor and the like includes a flow conduit and rotary valve means interposed in the flow conduit. Intermittent sealing means are provided for preventing flow through the flow conduit, comprising a sealing surface intermittently positionable in stationary, sealing relationship across the conduit. Means are also provided for moving the sealing surface into such stationary sealing relationship with the flow conduit, and out of sealing relationship with the flow conduit in a manner correlating with the operation of the rotary valve means, to facilitate sealing as the valve operates.