19results about "Oscillatory slide valve" patented technology

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.

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 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).

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).

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.

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.

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.

An engine rotating valve type rotary servo valve mechanism, including valve core (1), valve seat (2), inlet and outlet manifold (3), one-way diaphragm (18), one-way diaphragm (19), engine cylinder and servo rotary motor; The servo valve method of the engine rotating valve type servo valve mechanism is to use the servo rotary motor as the power to drive the valve core (1) to rotate inside the valve seat (3), and to use the rotary transformer to monitor and accurately control the rotary position of the inlet valve core (1) relative to the valve seat (3), to realize the opening and closing between the inlet and outlet grooves and the corresponding inlet and outlet ports, so as to realize the stop of the valve. The device has the advantages of compact structure, stable gas supply, convenient use and adjustment, etc., can effectively reduce the vibration of the engine due to the valve, improve the engine efficiency, and has good market prospect.

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. A left servo rotating motor is adopted as power to drive a valve element to rotate in a valve element sleeve, a right servo rotating motor is adopted as power to drive the valve element sleeve to rotate in a valve seat, a rotating transformer is adopted to monitor and accurately control the rotating position of an air inlet valve element relative to the valve seat in real time, and therefore air distribution is stopped and opened. 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.

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 rotary valve internal combustion engine A rotary valve internal combustion engine has a piston (1) connected to a crankshaft (3) and reciprocatable in a cylinder (2), a combustion chamber (4) being defined in part by the piston. The engine has a rotary valve (5) rotatable in a valve housing (8) fixed relative to the cylinder (2), the rotary valve having a valve body containing a volume (9) defining, in part, the combustion chamber 4 and further having in a wall part (11) thereof a port (12) giving, during rotation of the valve, fluid communication successively to and from the combustion chamber via inlet and exhaust ports (13, 14) in the valve housing. The valve body has a non-uniform radial profile along its axial length and / or about its axis of rotation to accommodate changes in the profile of the valve body during operation to maintain a substantially constant clearance between the valve body and the housing throughout the length of the valve body.

An exhaust valve includes a toroidal surface about an axis of rotation of the valve. The toroidal surface is positionable over a central exhaust port of an engine when lowered. The valve is raised by an actuator in response to increasing rotational speed of the crankshaft of the engine, thereby enlarging and raising the effective opening of the exhaust port. Lateral valve surfaces on either side of the toroidal surface close lateral exhaust ports when the valve is lowered. The lateral valve surfaces may be cylindrical and formed on fins.

A rotary flow control apparatus may comprise a rotary drive mechanism coupled to a ball controller comprising a ball disposed within a cavity. The apparatus may be disposed within a tubing string in a wellbore. Fluid flow is provided though the tubing, causing the rotation of the rotary drive mechanism. The flow passes through a ball cage above a seat disc that incorporates a flow port. The ball orbits around the cavity in response to the motion of an axially extending surface or “kicker.” When the ball obstructs the flow port, it substantially blocks the flow of fluid through the assembly, generating a water hammer impulse in the tubing above the rotary drive mechanism. The rotating kicker moves the ball off the flow port at one angular position and then allows the ball to reseat at a second angular position.