Original file (SVG file, nominally 467 440 pixels, file size: 5 KB). The invention, together with further advantages thereof, may best be understood by reference to the following description taken in conjunction with the accompanying drawings in which: An invention is disclosed for providing a twin power unit having an oscillating cylinders for an internal combustion engine.
With 50 years experience providing images from the most prestigious museums, collections and artists. It consists of one sliding pair and three turning pairs. As the crankshaft rotates, the piston rod moves up and down (or side to side in the case of a vertical cylinder) as well as in and out. Each piston compresses air beneath the piston before the compressed air is transferred to the intake cylinder. A knuckle joint is used to connect two rods which are under the action of tensile loads.
A conventional four cylinder engine at 1000 rpm fires 4,000 times in one minute. Because the piston rod is rigid and the piston itself is long relative to its diameter, this causes the cylinder to rock, or "oscillate" on its special mounting (trunnion). The rigid fixed-length rod assembly connecting the pistons to the crankshaft causes the cylinders to oscillate while the pistons rotate semi-elliptically in their motion to turn the crankshaft. In the latter case, the fixed port face is usually provided with three ports, the central one being the steam feed and the outer two being exhausts, only one of which being in use at any time, depending on the required direction of running. Two-stroke engines offer certain advantages over four-stroke engines because the former produces power strokes twice as often as compared to the four-stroke engine. Drag your file here or click Browse below. Broadly speaking, embodiments of the present invention utilize parallel oscillating cylinders coupled to a rod assembly, which powers a crankshaft without requiring a wrist pin.
12/055,989, filed on Mar. 
Internal combustion engines generally can be either two-stroke or four-stroke engines. In addition, each power unit further including a main journal attached to a crank coupler and a crank coupler assembly in physical communication with the crank coupler. In other instances, well known process steps have not been described in detail in order not to unnecessarily obscure the present invention. A reversible oscillating cylinder on a toy steam engine. New York, NY 10016
Hence, trunnion mount allows the twin power unit to oscillate such that the centerline of the pistons is at all times aligned with the crank throw of the crankshaft to eliminate lateral force vectors. 61/016,454, filed on Dec. 22, 2007, entitled Internal Combustion Engine Twin Power Unit Having an Oscillating Cylinder, by inventor Joseph E. Springer, both of which are hereby incorporated by reference. Size of this PNG preview of this SVG file: Add a one-line explanation of what this file represents. From Wikimedia Commons, the free media repository. In this aspect, each crank half further includes a crank throw portion. Model of a marine oscillating steam engine designed by Joseph Maudslay, clearly showing how the cylinders pivot on the trunnions, through which the steam is passed. Sachin is a B-TECH graduate in Mechanical Engineering from a reputed Engineering college. Conventional two-stroke engines, however, are generally not as efficient as four-stroke engines because two-stroke engines do not effectively remove all of the exhaust gases from the combustion chamber before the next power producing cycle. So we can obtain as many mechanisms as the number of links in a kinematic chain by fixing, in turn, different links in a kinematic chain. The pistons do not require a wrist pin, and the pistons and rod assembly are one piece, pushing straight on the crank throw, eliminating piston side thrust, and reducing conical wear to rings with blow by. Two-stroke engines are also less expensive to manufacture and build because they require fewer parts that are subject to wear, breakdown and replacement. For example, the movement of the pistons of each power unit cam be guided utilizing a rolling means that rolls along the guide rails. During the charge cycle both the intake piston, The power cycle begins once the pistons reach the top of the cylinders at 12 o'clock and full compression is achieved. The crankshaft is formed by coupling together a plurality of power units via crank coupler assemblies. Currently, he is working in the sheet metal industry as a designer. The spark plug, The rapid intake charge air blast purges the combustion exhaust gases from the intake cylinder, In one embodiment, each cylinder control arm, In this manner, when air is forced from beneath the pistons into the top of the cylinders, The charge cycle begins as the pistons travel further downward and the intake piston, As those skilled in the art will appreciate after a careful reading of the present disclosure, embodiments of the present invention provide power on each revolution of the crankshaft. In the other direction, the steam needs to be allowed to escape from the cylinder. Provisional Patent Application having Ser. This page was last edited on 28 September 2020, at 07:22. Tandem twin power unit engine having an oscillating cylinder, 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MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING, COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS, INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL, Engines characterised by number of cylinders, e.g. [1], In full-size engines, the steam and exhaust ports are usually built into the pivot (trunnion) mounting. a crank assembly movably attached to the parallel piston rod assembly via a crank throw portion, the crank assembly further connected to a main journal. A sleeve surrounds the crank throw portion of each crank half of a crank assembly, and can include a plurality of keyway pins is disposed within the sleeve, and wherein one keyway pin is attached to the sleeve. Broadly speaking, the present invention addresses these needs by providing an oscillating cylinder twin power unit for an internal combustion engine that can be coupled together in tandem to form engines of varying sizes. As above, tandem internal combustion engine includes a first and second power unit having an enclosed intake cylinder, an enclosed exhaust cylinder and two pistons each disposed within an enclosed cylinder. To provide additional flexibility each power unit can include a crank assembly comprising two crank halves coupled together via a bolt, with each crank half being attached to a main journal. Further, each power unit can also include a hot spark plug and a cold spark plug, wherein the hot spark plug has more electrode area exposed than the cold spark plug. Reversing of the engine can be achieved by reversing the steam connections between inlet and exhaust or, in the case of small engines, by shifting the trunnion pivot point so that the port in the cylinder lines up with a different pair of ports in the port face. United States, {"event":"pageview","page_type1":"catalog","page_type2":"image_page","language":"en","user_logged":"false","user_type":"ecommerce","nl_subscriber":"false"}, {"event":"ecommerce_event","event_name":"view_item","event_category":"browse_catalog","ecommerce":{"items":[{"item_id":"UIG3330543","item_brand":"other","item_category2":"out_of_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"a_patent_3_cylinder_oscillating_steam_engine_for_marine_use_1850","item_variant":"undefined"}]}}. The tandem internal combustion engine includes a first and second power unit having an enclosed intake cylinder, an enclosed exhaust cylinder and two pistons each disposed within an enclosed cylinder. Registered in England and Wales as company number 01056394. It is usually, found in reciprocating steam engine mechanism. Broadly speaking, embodiments of the present invention utilize parallel oscillating cylinders coupled to a rod assembly, which powers a crankshaft without requiring a wrist pin. They also tend to be more compact than other types of cylinder of the same capacity, which makes them advantageous for use in ships. In general, two-stroke engines complete the power cycle during a single reciprocation of the piston, that is, one revolution of the crankshaft. However, if the joint is guided, the rods may support a compressive load. This method of obtaining different mechanisms by fixing different links in a kinematics chain is known as inversion of the mechanism. Instead the cylinder rocks, or oscillates, as the crank moves the piston, pivoting in the mounting trunnion so that ports in the cylinder line up with ports in a fixed port face alternately to direct steam into or out of the cylinder. They have the advantage of simplicity and, therefore, low manufacturing costs. a cylinder assembly comprising an intake cylinder and an exhaust cylinder, the cylinder assembly connected to a trunnion allowing the cylinder assembly to oscillate; a parallel piston rod assembly having a first end and a second end, wherein the first end is movable within the cylinder assembly; and. a first power unit having an enclosed intake cylinder, an enclosed exhaust cylinder and two pistons each disposed within an enclosed cylinder, wherein each piston compresses air beneath the piston before the compressed air is transferred to the intake cylinder, the first power unit further including a main journal attached to a crank coupler and a crank coupler assembly in physical communication with the crank coupler; a second power unit having an enclosed intake cylinder, an enclosed exhaust cylinder and two pistons each disposed within an enclosed cylinder, wherein each piston compresses air beneath the piston before the compressed air is transferred to the intake cylinder, the second power unit further including a main journal attached to a crank coupler and a crank coupler assembly in physical communication with the crank coupler; and. Introduction to Pressure Vessels Vessels, tanks, and pipelines that carry, store, or receive fluids are called pressure vessels. For example, the crank couplers can have splined shafts and the crank coupler assembly can include a plurality of hardened pins positioned to fit splines of the splined shafts of the crank couplers. All structured data from the file namespace is available under the. 26, 2008, entitled Internal Combustion Engine Twin Power Unit Having An Oscillating Cylinder, by inventor Joseph E. Springer, which claims the benefit of U.S. a parallel cylinder assembly perpendicular to a crank, the parallel cylinder assembly having an intake cylinder in fluid communication with an intake trunnion port and an exhaust cylinder connected to an exhaust trunnion port; cylinder arms extending down to crank rollers that roll up and down arm guides as a crank throw rotates, oscillating the parallel cylinder assembly on trunnions back and forth; a parallel piston rod assembly movable within the parallel cylinder assembly perpendicular at one end while being held by rod journal at another end, wherein the parallel piston rod assembly moves in an elliptical motion when swinging on the trunnions and moving in the parallel cylinder assembly; and. He also likes to write articles related to the mechanical engineering field and tries to motivate other mechanical engineering students by his innovative project ideas, design, models and videos. Search the Bridgeman archive by uploading an image.