|
Pistonless Rotary Engine
A pistonless rotary engine is an internal combustion engine that does not use pistons in the way a reciprocating engine does. Designs vary widely but typically involve one or more rotors, sometimes called rotary pistons. Although many different designs have been constructed, only the Wankel engine has achieved widespread adoption. The term rotary combustion engine has been used as a name for these engines to distinguish them from early (generally up to the early 1920s) aircraft engines and motorcycle engines also known as ''rotary engines''. However, both continue to be called ''rotary engines'' and only the context determines which type is meant, whereas the "pistonless" prefix is less ambiguous. Pistonless rotary engines A pistonless rotary engine replaces the linear reciprocating motion of a piston with more complex compression/expansion motions with the objective of improving some aspect of the engine's operation, such as: higher efficiency thermodynamic cycles, lower mecha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rotary Engine Photo Sequence 01
Rotary may refer to: General * Rotary motion Engineering and technology * Rotary dial, a rotating telephone dial * Rotary engine (other), multiple types of engines called "rotary" * Rotary latch * Rotary milking shed, a type of milking shed used in the dairy industry * Rotary snowplow, one type of railroad snowplow used especially for deep snow removal * Rotary system, a type of pre-electronic telephone switch * Rotary table (drilling rig), a device used to apply directional force to a drill string * Rotary tiller, a motorised cultivator * Rotary woofer, a type of loudspeaker capable of producing very low frequency sound * Rotary wing aircraft Arts and entertainment * "The Rotary", a song by Andy Partridge from ''Take Away / The Lure of Salvage'' Organisations and enterprises * Rotary International, or Rotary Club, an international service organization founded in the United States ** Rotary Foundation, non-profit foundation of Rotary International ** Rotary Scholarsh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atkinson Cycle
The Atkinson-cycle engine is a type of internal combustion engine invented by James Atkinson in 1882. The Atkinson cycle is designed to provide efficiency at the expense of power density. A variation of this approach is used in some modern automobile engines. While originally seen exclusively in hybrid electric applications such as the earlier-generation Toyota Prius, later hybrids and some non-hybrid vehicles now feature engines with variable valve timing, which can run in the Atkinson cycle as a part-time operating regimen, giving good economy while running in Atkinson cycle, and conventional power density when running as a conventional, Otto cycle engine. Design Atkinson produced three different designs that had a short compression stroke and a longer expansion stroke. The first Atkinson-cycle engine, the ''differential engine'', used opposed pistons. The second and best-known design was the ''cycle engine'', which used an over-center arm to create four piston strokes in one ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Proposed Engines
Proposal(s) or The Proposal may refer to: * Proposal (business) * Research proposal * Proposal (marriage) * Proposition, a proposal in logic and philosophy Arts, entertainment, and media * The Proposal (album), ''The Proposal'' (album) Films * The Proposal (1957 film), ''The Proposal'' (1957 film), an Australian television play based on Chekhov's 1890 play * The Proposal (2001 film), ''The Proposal'' (2001 film), starring Nick Moran, Jennifer Esposito, and Stephen Lang * The Proposal (2009 film), ''The Proposal'' (2009 film), starring Sandra Bullock and Ryan Reynolds * The Proposal (2022 film), ''The Proposal'' (2022 film), starring Joe Joseph and Amara Raja * "Wild Tales (film)#"La propuesta", La propuesta" ("The Proposal"), a short story in the 2014 Argentina anthology film ''Wild Tales'' Literature * ''Proposals (play)'', a 1997 play by Neil Simon * The Proposal (novel), ''The Proposal'' (novel), 1999 and 35th book in the ''Animorphs'' series by K.A. Applegate * ''The Propo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pistonless Rotary Engine
A pistonless rotary engine is an internal combustion engine that does not use pistons in the way a reciprocating engine does. Designs vary widely but typically involve one or more rotors, sometimes called rotary pistons. Although many different designs have been constructed, only the Wankel engine has achieved widespread adoption. The term rotary combustion engine has been used as a name for these engines to distinguish them from early (generally up to the early 1920s) aircraft engines and motorcycle engines also known as ''rotary engines''. However, both continue to be called ''rotary engines'' and only the context determines which type is meant, whereas the "pistonless" prefix is less ambiguous. Pistonless rotary engines A pistonless rotary engine replaces the linear reciprocating motion of a piston with more complex compression/expansion motions with the objective of improving some aspect of the engine's operation, such as: higher efficiency thermodynamic cycles, lower mecha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Range Extender (vehicle)
A range extender is a fuel-based auxiliary power unit (APU) that extends the range of a battery electric vehicle by driving an electric generator that charges the vehicle's battery. This arrangement is known as a series hybrid drivetrain. The most commonly used range extenders are internal combustion engines, but fuel-cells or other engine types can be used. Range extender vehicles are also referred to as extended-range electric vehicles (EREV), range-extended electric vehicles (REEV), and range-extended battery-electric vehicle (BEVx) by the California Air Resources Board (CARB). Many range extender vehicles, including the Chevrolet Volt and the BMW i3, are able to charge their batteries from the grid as well as from the range extender, and therefore are a type of plug-in hybrid electric vehicle (PHEV). Motivation The key function of the range extender is to increase the vehicle's range. Range autonomy is one of the main barriers for the commercial success of electric vehic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Integrated Supersonic Component Engine
The IRIS Engine is a design for a new type of internal combustion engine. Its inventors say that engines constructed using this design can be smaller, lighter and significantly more efficient than traditional engines of comparable horsepower and displacement. The design replaces the piston and cylinder architecture of conventional engines with a purportedly novel mechanism called the Internally Radiating Impulse Structure, or IRIS. In January 2008, the IRIS Engine design won first prize for transportation technology in NASA's annual "Create the Future" design competition. In October 2008, the Radial Expansion Engine (RXE), a variant of the IRIS design, won second prize in the ConocoPhillips Energy Prize competition. Geometry of the IRIS In an IRIS combustion chamber, a number of inverted segments of a circle, or "chordons," interact to create a continuously sealed chamber of variable volume. Instead of elongating during combustion, as a traditional engine does, the IRIS engine's c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gerotor
A gerotor is a positive displacement pump. The name ''gerotor'' is derived from "generated rotor". A gerotor unit consists of an inner and outer rotor. The inner rotor has ''n'' teeth, while the outer rotor has ''n''+1 teeth; with ''n'' defined as a natural number greater than or equal to 2. The axis of the inner rotor is offset from the axis of the outer rotor and both rotors rotate on their respective axes. The geometry of the two rotors partitions the volume between them into ''n'' different dynamically-changing volumes. During the assembly's rotation cycle, each of these volumes changes continuously, so any given volume first increases, and then decreases. An increase creates a vacuum. This vacuum creates suction, and hence, this part of the cycle is where the inlet is located. As a volume decreases compression occurs. During this compression period, fluids can be pumped, or, if they are gaseous fluids, compressed. Gerotor pumps are generally designed using a trochoidal inner ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nutating Disc Engine
A nutating disc engine (also sometimes called a disc engine) is an internal combustion engine comprising fundamentally of one moving part and a direct drive onto the crankshaft. Initially patented in 1993, it differs from earlier internal combustion engines in a number of ways and uses a circular rocking or wobbling '' nutating motion'', drawing heavily from similar steam-powered engines developed in the 19th century, and similar to the motion of the non-rotating portion of a swash plate on a swash plate engine. Operation In its basic configuration the core of the engine is a nutating non-rotating disc, with the center of its hub mounted in the middle of a Z-shaped shaft. The two ends of the shaft rotate, while the disc " nutates" (performs a wobbling motion without rotating around its axis). The motion of the disc circumference describes a portion of a sphere. A portion of the area of the disc is used for intake and compression, a portion is used to seal against a center casin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wave Disk Engine
A wave disk engine or wave disk generator is a type of pistonless rotary engine being developed at Michigan State University and Warsaw Institute of Technology. The engine has a spinning disk with curved blades. Once fuel and air enter the engine, the rotation of the disk creates shockwaves that compress the mixture. When ignited, the burning mixture expands, pushing against the blades, causing them to spin. The spinning of the disk itself opens and closes intake and exhaust ports. The proposed concept was called a radial internal combustion wave rotor. Background Wave rotors utilize shock waves to transfer energy between a high-energy fluid to a low-energy fluid, thereby increasing both temperature and pressure of the low-energy fluid (also called pressure wave machines or pressure exchangers). Operational principles As with all heat engines, the efficiency of a wave disk engine is governed by the temperature difference between the hot and cold sides (see Carnot's theorem). ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trochilic Engine
A swing-piston engine is a type of internal combustion engine in which the pistons move in a circular motion inside a ring-shaped "cylinder", moving closer and further from each other to provide compression and expansion. Generally two sets of pistons are used, geared to move in a fixed relationship as they rotate around the cylinder. In some versions the pistons oscillate around a fixed center, as opposed to rotating around the entire engine. The design has also been referred to as a oscillating piston engine, vibratory engine when the pistons oscillate instead of rotate, or toroidal engine based on the shape of the "cylinder". Many swing-piston engines have been proposed, but none have been successful. Two attempts in about 2010 are the prototype American-made MYT engine and prototype Russian ORE for use in the Yo-Mobile hybrid car. Both claimed high fuel efficiency and high power-to-weight ratio, but there have been no successful demonstrations of claimed efficiency or that the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sarich Orbital Engine
The Sarich orbital engine is a type of internal combustion engine, invented in 1972 by Ralph Sarich, an engineer from Perth, Australia, which features orbital rather than reciprocating motion of its central piston. It differs from the conceptually similar Wankel engine by using a generally prismatic shaped piston that orbits the axis of the engine, without rotation, rather than the rotating trilobular rotor of the Wankel. Overview The engine promised to be about one third the size and weight of conventional piston engines due to the compact arrangement of the combustion chambers. Another advantage is that there is no high-speed contact area with the engine walls, unlike in the Wankel engine in which edge wear is a problem. However, the combustion chambers are divided by vanes which do have contact with both the walls and the orbiting piston and are more difficult to seal due to the eight corners of the combustion chamber. In the patent, the engine is described as two stroke in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
RKM Engine
The Rotary Piston Machine (german: Rotationskolbenmaschine (RKM)) is a proposed (still in development) form of machine. It can be used either to transform pressure into rotational motion (an engine), or the converse - rotational motion into pressure (pump). It is still in development, but has possible applications in fields requiring oil, fuel or water pumps, as well as pumps for non-abrasive fluids when moderate or high pressure is required. For instance: Hydraulics, fluid and gas transport systems, presses, fuel injection, irrigation, heating systems, hydraulic lifts, water jet engines, hydro- and pneumatic engines, and medical pumps.Schapiro, B., "The RKM Rotary Piston Maschines" In: Vernetzte Wissenschaften, Eds: Peter Jörg Plath und Ernst-Christoph Haß, Logos Verlag, Berlin 2008 The machine's inventor is Boris I. Schapiro, along with co-inventors Lev B. Levitin and Naum Kruk. Design All versions of the RKM incorporate a working chamber formed by smoothly conjugated circul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
