55results about "Rotary slide valve" patented technology

The invention discloses a variable exhaust port device of a two-stroke engine, and aims to overcome the defects that in the prior art, although an exhaust hole with a variable opening size is formed in the two-stroke engine, the exhaust efficiency of waste gas is still limited and needs to be further improved when the engine runs at a high speed. According to the technical scheme, a main exhaust hole and an auxiliary exhaust hole are formed in the inner side wall of an air cylinder body, a main exhaust valve for controlling the opening size of the main exhaust hole is arranged in the main exhaust hole, and an auxiliary exhaust valve for controlling the opening size of the main exhaust hole is arranged in the auxiliary exhaust hole; the main control assembly controls the opening size of the main exhaust valve; the auxiliary assembly is connected with the main control assembly and controls the opening size of the auxiliary exhaust hole; wherein the auxiliary exhaust valve is in a normally closed state, and the main control assembly drives the auxiliary assembly and controls the auxiliary exhaust valve to open the auxiliary exhaust hole.

The invention belongs to the technical field of internal combustion engine power devices, and discloses a double-piston mechanism for an internal combustion engine, which comprises a cylinder body, and more than one cylinder is arranged in the cylinder body; an air inlet seat and an air outlet seat are installed on the upper portion and the lower portion of the cylinder body respectively, an air inlet pipe and an air outlet pipe are arranged in the air inlet seat and the air outlet seat respectively, and an air inlet channel and an air outlet channel are arranged in the air inlet pipe and the air outlet pipe respectively. A control device for gas distribution is arranged at the corresponding position of each cylinder; a high-pressure oil pump is arranged outside the cylinder body, and the high-pressure oil pump is communicated with the oil sprayer through a high-pressure oil pipe; a piston assembly I and a piston assembly II are symmetrically arranged in each cylinder body, and a bevel gear set I and a bevel gear set II which are matched with the piston assembly I and the piston assembly II to transmit power are further arranged in each cylinder body. The power performance of the internal combustion engine can be improved through the two piston assemblies, the device is small in size and light in weight, and single-machine fuel consumption and operation cost are effectively reduced.

The invention discloses an internal combustion engine valve, an internal combustion engine timing system and an internal combustion engine, and relates to the technical field of internal combustion engines, the internal combustion engine valve comprises an air channel, a valve cover plate, a connecting piece and a reset piece, and the air channel is fixed to the internal combustion engine; the air valve cover plate is arranged in the air channel, the section of the air valve cover plate is matched with the cross section in the air channel, and the air channel can be closed when the air valve cover plate is perpendicular to the axis of the air channel; the connecting piece is connected with the air valve cover plate, the connecting piece is externally connected with a driving device, and the driving device can drive the connecting piece to rotate so as to control the air valve cover plate to synchronously rotate to be parallel to the axis of the air channel; the reset piece is arranged on the air channel and used for driving the valve cover plate to reset to the state perpendicular to the axis of the air channel. According to the internal combustion engine valve, the internal combustion engine timing system and the internal combustion engine, the influence on the circulation sectional area of the air channel is small, and air exchange of the internal combustion engine is better facilitated.

An engine system and method of operation therefor are provided. The system is a two-stroke internal combustion engine having an exhaust valve assembly that controls the exhaust cycle relative to crankshaft timing. The exhaust valve assembly is positioned between exhaust port and an exhaust pipe. The exhaust valve assembly comprises a rotary exhaust valve and valve phasing assembly. The rotary exhaust valve comprises a valve body defining a valve void therethrough. The use of the rotary exhaust valve allows for alteration or calibration of the fixed time and location at which the intake port and exhaust port are opened and closed by the piston with respect to the respective engine cycle. Notably, while still uncovered by the piston, the exhaust port may be closed due to full misalignment of the valve void and the exhaust port, while the intake port remains open, allowing for cylinder charging.

In an opposed-piston mechanism, an intake compression cylinder and an expansion exhaust cylinder are individually provided, and a rotating perforated columnar valve and an ignition combustion chamber are formed therebetween. A valve mechanism is arranged on a cylinder side surface side, and a disk cam that moves in conjunction with crank rotation operates an intake valve and an exhaust valve on a cylinder side surface via a movable fulcrum type rocker arm. A movable structure of the rocker arm also realizes opening / closing amounts of the intake valve and the exhaust valve according to an operating situation of an engine. Since a piston pin and a piston pin can absorb variations of an engine that occur when two connecting rods are connected to one piston, the two connecting rods can be easily connected to the one piston.

To provide a method of measuring an axial and / or rotational position of at least one operation contour for operating at least one operation means of a valve of an internal combustion engine by a valve train device.SOLUTION: A valve train device 1 includes at least one shaft, where a prescribed number of operation contours 4 for operating at least one operation means of a valve of an internal combustion engine is arranged on the at least one shaft in a relatively nonrotatable manner. A sensor unit 5 with a prescribed number of sensors 6 is provided, and each sensor 6 of the prescribed number of sensors 6 has a spatial sensing area for sensing a physical quantity. In at least one axial position, at least one operation contour 4 of the prescribed number of operation contours 4 is arranged at least in part in the spatial sensing area of at least one sensor 6 of the prescribed number of sensors 6.SELECTED DRAWING: Figure 1

In an opposed-piston mechanism, an intake compression cylinder (1) and an expansion exhaust cylinder (2) are individually provided, and a rotating perforated columnar valve (3) and an ignition combustion chamber (4) are formed therebetween. A valve mechanism is arranged on a cylinder side surface side, and a disk cam (7) that moves in conjunction with crank rotation operates an intake valve (33) and an exhaust valve (34) on a cylinder side surface via a movable fulcrum type rocker arm (8). A movable structure of the rocker arm also realizes opening / closing amounts of the intake valve (33) and the exhaust valve (34) according to an operating situation of an engine. Since a piston pin (18) and a piston pin (30) can absorb variations of an engine that occur when two connecting rods are connected to one piston, the two connecting rods can be easily connected to the one piston.

The invention relates to an opposed piston internal combustion engine. In the prior art, an opposed piston crank mechanism is provided, combustion gas pressure is converted into kinetic energy of two pistons, so that heat efficiency is effectively improved, but a fixed air cylinder cover cannot be formed, and the opposed piston crank mechanism cannot adapt to a traditional internal combustion engine structure. With the complexity of the internal combustion engine disclosed in the prior art, high component precision and size management are required, but not practical. Besides, in order to reduce fuel consumption, low-rotating-speed operation is effective, but in a traditional piston crank mechanism, vibration can be generated at the low rotating speed, and a balance mechanism needs to be added to cope with the vibration. In the opposed piston mechanism of the present invention, an intake compression cylinder (1) and an expansion exhaust cylinder (2) are provided, respectively, and a rotary perforated cylindrical valve (3) and an ignition combustion chamber (4) are provided between the intake compression cylinder (1) and the expansion exhaust cylinder (2). The valve mechanism is disposed on the cylinder side surface side, and operates an intake valve (33) and an exhaust valve (34) on the cylinder side surface via a movable fulcrum rocker arm (8) by means of a disc cam (7) rotationally interlocked with a crank. The opening / closing amount of the intake valve (33) and the exhaust valve (34) is also realized by the movable structure of the rocker arm according to the operation state of the internal combustion engine. The piston pin (18) and the piston pin (30) can absorb the deviation of the internal combustion engine generated when the two connecting rods are connected by one piston, so that the two connecting rods can be easily connected by one piston. In addition, the connecting rods can also be arranged oppositely like the piston, thereby counteracting unbalanced inertia and reducing vibration at low rotation speed.

The invention relates to a piston machine (10) for supplying work to or extracting work from a gaseous or liquid working medium, comprising at least one cylinder (1) in which a piston (2) is arranged. The piston (2) is guided in the working chamber (3) of the cylinder (1) such that the piston carries out an oscillating movement along the cylinder axis as well as a rotating movement about the cylinder axis, in particular a sinusoidal rotary-stroke movement, wherein the piston (2) is connected to a transmission mechanism (9), in particular via a piston rod (29), in order to guide the piston (2) in a forced manner and in order to convert the rotary-stroke movement into a rotational movement, and the piston machine (10) has at least one inlet channel (4) for admitting the working medium into the working chamber (3) and at least one outlet channel (5) for discharging the working medium out of the working chamber (3). According to the invention, the inlet channel (4) and the outlet channel (5) are arranged in the cylinder casing (11) such that the head (21) of the piston (2) slides over the inlet channel (4) and the outlet channel (5) during the rotary-stroke movement thereof and cyclically covers and releases same, in particular in a complete manner. The inlet channel (4) and the outlet channel (5) together with the piston (2) are arranged and designed such that the inlet channel (4) and the outlet channel (5) are, independently of each other, dynamically sealed off from the working chamber (3) with respect to the working medium, and the respective sealing surface between the piston head (21) and the inlet channel (4) and / or the outlet channel (5) is arranged about the inlet channel (4) and / or the outlet channel (5).

A multidirectional adjustable rotary valve air distribution device for an engine comprises a valve element, a valve element sleeve, a valve seat, a right bearing, a left bearing, a left end cover, a right end cover, a left mechanical sealing ring, a right mechanical sealing ring, a left sealing ring, a right sealing ring and a servo rotating motor. According to the two-way adjustable gas distribution method for the engine, the device is adopted, the left servo rotating motor serves as power to drive the valve element to rotate in the valve element sleeve, the right servo rotating motor serves as power to drive the valve element sleeve to rotate in the valve seat, and the rotating transformer is adopted to monitor and accurately control the rotating position of the gas inlet valve element relative to the valve seat in real time; therefore, the stop and communication of gas distribution are realized; the rotary transformer is used for monitoring and accurately controlling the rotating position of the air inlet valve element sleeve relative to the valve seat in real time, and the adjustment of the air distribution amount is achieved. The device has the advantages of being compact in structure, stable in gas supply, convenient to use and adjust and the like, vibration generated by gas distribution of the engine can be reduced, and good market popularization prospects are achieved.

Cylinder arrangement for an internal combustion engine with a cylinder housing (4) in which a working piston (8) is provided, wherein the cylinder housing (4) is closed at a first end by a cylinder cover (6) movable by means of a first drive device (20), the cylinder cover having a cover circumferential surface (16), such that a combustion chamber (10) is formed between the working piston (8) and the cylinder cover (6), wherein a slide arrangement (18), which can be actuated by a second drive device (44), is provided for opening and closing combustion air inlet openings (32) and exhaust gas outlet openings (34) arranged in the cylinder housing (4), wherein the cylinder cover (6) is movably arranged such that an overlap in the radial direction of the cover circumferential surface (16) with the combustion air inlet openings (32) and exhaust gas outlet openings (34) is possible, characterized in thatthat a circumferential edge of the cover circumferential surface (16) directed towards the combustion chamber (10) has a number of angled sections (72) corresponding to the combustion air inlet openings (32) and exhaust gas outlet openings (34).

To further improve an opening / closing speed of a rotary valve during intake, and reduce leakage of gas in a combustion chamber from a gap between the rotary valve and the combustion chamber.SOLUTION: An engine 10 of the present invention includes a cylinder unit 12 that causes gas jets from a plurality of axially symmetrical circumferential positions to collide in a pulsed manner at a center of a combustion chamber 19 and compress, thereby combusting and exploding fuel in the combustion chamber 19. The cylinder unit 12 comprises: a cylinder body 15 in which the combustion chamber 19 is formed; and intake rotary valves 16 that are rotatably attached to the cylinder body 15 and are arranged at multiple locations along an outer periphery of the combustion chamber 19. The intake rotary valves 16 forms a cylindrical outer shape independently rotatably arranged outside each circumferential position, and performs opening / closing movement between an intake open state and an intake closed state by the rotation.SELECTED DRAWING: Figure 1

An homogeneous charge compression ignition internal combustion engine has a combustion cylinder, and a combustion piston head movable along a piston axis within the combustion cylinder. A compression ignition cylinder is fluidically connected to the combustion cylinder. A compression ignition piston moves in reciprocating motion within the compression ignition cylinder. The compression ignition piston is adapted to be moved between a bottom dead centre position corresponding to a maximum volume of the compression ignition cylinder to a top dead centre position corresponding to a minimum volume of the compression ignition cylinder during operation of the engine to create a pressure spike within the combustion cylinder thereby causing auto ignition of a fuel / air mixture within the combustion cylinder.

To secure reliability of an electronic throttle device by achieving both corrosion suppression of a bore inner wall of a housing and sufficient heat radiation performance of heat generation of a motor.SOLUTION: An electronic throttle device 1 comprises: a throttle body 11 including a bore 11a; a valve shaft 3 that is rotatably supported by the throttle body 11 and partially disposed in the bore 11a; a throttle valve 4 that is disposed in the bore 11a and fixed to the valve shaft 3; a DC-motor 5 that is provided in the throttle body 11 and rotationally drives the valve shaft 3; and a motor housing part 11c that is provided integrally with the throttle body 11 for housing the DC-motor 5. In the throttle body 11, only at least a part of an inner wall of the bore 11a is covered with an anodic oxide film 20, and a raw material is exposed in the other part.SELECTED DRAWING: Figure 3

A independent rotary valve engine and a method for controlling thereof includes an engine crankcase, a crankshaft located therein, a bidirectional servo motor connected to the engine crankcase, a cylinder block connected to the engine crankcase, and a cylinder head connected to the cylinder block, with a spark plug and a piston linked by a connecting rod to the crankshaft. An intake rotary valve is located within a first channel in the cylinder head, and an exhaust rotary valve is located within a parallel second channel. A pulley connects a servo motor shaft of the bidirectional servo motor to the intake rotary valve. An engine control device, operatively connected to the spark plug and the bidirectional servo motor, generates spark timing signals, receives an engine speed requirement, determines a wide-open throttle position and intake valve closing angle, and generates variable valve timing signals to rotate the servo motor shaft.

A head, for an internal combustion engine, is provided, the head including a base and intake and exhaust assemblies supported by the base and rotatable to open and close intake and exhaust ports formed in the base. The intake and exhaust assemblies each include a plate with an opening therein and rotatable between a position in which the opening in the plate is aligned with and opens one of the intake port and exhaust port and a position in which the plate closes the intake port or exhaust port. Sealing devices provide seals between the plates and the intake and exhaust ports.

A two-stroke engine (1) with opposite pistons (5, 6) comprises a body (2) in which there is arranged a plurality of cylinders (3) arranged adjacent to each other and with parallel longitudinal axes, in each cylinder there being present two pistons (5, 6) movable in an opposite manner towards an area (11) of the cylinder wherein the fuel is introduced, the cylinders having intake and discharge ports (12). At all discharge ports (12) of the cylinders there is arranged a rotary valve (17) adapted to allow a discharge of combustion gases of each cylinder towards an engine exhaust pipe.

The invention relates to a piston machine (10) for taking in or outputting work from or to a gaseous or liquid working medium, comprising at least one cylinder (1) in which a piston (2) is arranged, the piston (2) being guided in a working chamber (3) of the cylinder (1) in such a way that it can perform both a reciprocating movement along the cylinder axis and a rotational movement about the cylinder axis, in particular a sinusoidal rotational stroke movement, the piston (2) being connected to a drive mechanism (9), in particular via a piston rod (29), for forced guidance of the piston (2) and for conversion of the rotational stroke movement into a rotational movement, the piston machine (10) having at least one inlet channel (4) for the working medium into the working chamber (3) and at least one outlet channel (5) for the working medium from the working chamber (3). According to the invention, the inlet channel (4) and the outlet channel (5) are arranged in the cylinder wall (11) in such a way that the piston (2) can sweep over the inlet channel (4) and the outlet channel (5) with its piston skirt (21) during its rotational stroke movement and can periodically, in particular completely, cover and reopen these channels, the inlet channel (4) and the outlet channel (5) being arranged and configured in such a way that they each achieve a dynamic seal relative to the working chamber (3) for the working medium independently of one another, the effective sealing surface between the piston skirt (21) and the inlet channel (4) and / or the outlet channel (5) being arranged around the inlet channel (4) and / or the outlet channel (5), respectively.

A simple positive displacement turbine engine has been discovered in which all reciprocating, oscillating and / or elliptical mass is eliminated. This special dual axis turbine engine masters near ideal & complete base four (4) Internal Combustion Engine (ICE) cycles namely; Intake, Compression, Expansion & Exhaust and further perfects them with a single draft cycle between the Intake & Compression cycles and another single draft cycle between the Expansion & Exhaust cycles for a total of six (6) cycles all completed within one (1) 360 degree rotor revolution. The combination of the intrinsic low friction & highly efficient conversion of chemical & thermal reaction into mechanical work and significantly improved cycling results in extremely high specific power and significantly improved Brake Thermal Efficiency (BTE) such that complicated, costly & problematic Variable Valve Timing (VVT) & Direct Fuel Injection (DI) systems can add no additional benefit. And yet the core moving parts (not counting roller bearings) can be reduced to as little as two (2) Intersecting rotors on dual axis and no more than four (4) where timing gears are necessary. Despite its unmatched simplicity the here disclosed special dual axis turbine engine is capable of efficiently generating high compression ratios in excess of 35: 1 @ low speeds and 40: 1 @ higher speeds without aid of external boost. Combined with the ability to initiate ignition of a vast array of combustible fuels, including Hydrogen, by multiple optimally optional means (ie Spark, Glow, Auto, Etc.) in advance of minimum combustion chamber volume without any negative work produced. Industrially significant improvements in power density, BTE AND harmful emission mitigation and even elimination are mathematically and dependably obtainable.

In an opposed-piston mechanism, an intake compression cylinder and an expansion exhaust cylinder are individually provided, and a rotating perforated columnar valve and an ignition combustion chamber are formed therebetween. A valve mechanism is arranged on a cylinder side surface side, and a disk cam that moves in conjunction with crank rotation operates an intake valve and an exhaust valve on a cylinder side surface via a movable fulcrum type rocker arm. A movable structure of the rocker arm also realizes opening / closing amounts of the intake valve and the exhaust valve according to an operating situation of an engine. Since a piston pin and a piston pin can absorb variations of an engine that occur when two connecting rods are connected to one piston, the two connecting rods can be easily connected to the one piston.

Embodiments of the present disclosure present a valve assembly that includes a valve body having a gas passage bore, a valving bore extending along a longitudinal axis and intersecting the gas passage bore, a first bearing surface concentric with the longitudinal axis and a radially spaced apart second bearing surface concentric with the longitudinal axis, wherein an interface of the gas passage bore and the valving bore defines a flow port radially intermediate the first bearing surface and the second bearing surface. The valve assembly further includes a shaft valve extending along the longitudinal axis and rotatably mounted in the valving bore.

The present application relates to the technical field of motorcycle engine manufacturing, in particular to an engine starting decompression mechanism and a motorcycle, comprising an engine body, further comprising a valve top cup, the valve top cup is composed of a valve cover and a valve rod, a rotary pressure valve for conducting and discharging compressed air is installed inside the valve cover, an exhaust mesh cover for exhaust is installed on the valve cover, an exhaust hole for discharging compressed air is formed at the lower end of the rotary pressure valve; a valve core lifting rod for opening and locking the rotary pressure valve is slidably installed in the valve rod; the cam block drives the valve core lifting rod to slide up and down, through the cooperation of the rotary pressure valve and the valve core lifting rod, the problem that the starting mechanism needs to be triggered every time the engine starts is solved, thereby improving the use efficiency of the starting decompression mechanism, reducing the invalid use frequency of the decompression mechanism, and prolonging the service life of the mechanism.

An engine system and method of operation therefor are provided. The system is a two-stroke internal combustion engine having an exhaust valve assembly that controls the exhaust cycle relative to crankshaft timing. The exhaust valve assembly is positioned between exhaust port and an exhaust pipe. The exhaust valve assembly comprises a rotary exhaust valve and valve phasing assembly. The rotary exhaust valve comprises a valve body defining a valve void therethrough. The use of the rotary exhaust valve allows for alteration or calibration of the fixed time and location at which the intake port and exhaust port are opened and closed by the piston with respect to the respective engine cycle. Notably, while still uncovered by the piston, the exhaust port may be closed due to full misalignment of the valve void and the exhaust port, while the intake port remains open, allowing for cylinder charging.

The present invention is applicable to the technical field of engine valve train systems and provides a self-rotating valve. The valve includes a valve stem, a valve head, and a valve bottom. The valve bottom includes a bottom circular part and a bottom spiral part. A spiral component is arranged on the circumferential surface of the bottom spiral part. The self-rotating valve provided by the present invention, by adding a forced rotation mechanism, without increasing additional layout space and cost, only through the change of the shape of the bottom surface of the valve head, utilizes the intake and exhaust airflows to generate a lateral force on the valve lift, so that the valve rotates self-spinningly in a spiral shape on the bottom plane of the valve, which can meet the requirements of small layout space, low cost, and low failure risk.

A method for operating a two-stroke internal combustion engine (1') with a number of cylinders (2) in which pressurized working gas can expand to perform work, wherein the gas outlet window (16) of the cylinder or cylinders (2) is connected to an exhaust system (12) via an exhaust port (18), is intended to keep adverse pollutant emissions particularly low in a particularly simple and reliable manner. According to the invention, in a final phase of the exhaust stroke of the respective cylinder (2), the gas-side connection between the gas outlet window (16) and the exhaust system (12) is interrupted, and instead, the gas outlet window (16) is supplied with pressurized fresh gas via the exhaust port (18).