"the next generation of Wankel engines, the SkyActiv-R. Mazda states that the SkyActiv-R solves the three key issues with previous rotary engines: fuel economy, emissions and reliability. Mazda announced the introduction of the series-hybrid Mazda2 EV car using a Wankel engine as a range extender; however, no date of introduction has been announced. In October 2018 Mazda confirmed a rotary engine will be in a hybrid car ready for sale in 2020. American Motors Corporation (AMC), the smallest U.S. automaker, was so convinced ""...that the rotary engine will play an important role as a powerplant for cars and trucks of"
"Felix Wankel Felix Heinrich Wankel (13 August 1902 – 9 October 1988) was a German mechanical engineer and inventor after whom the Wankel engine was named. Wankel was born in 1903 in Lahr in what was then the Grand Duchy of Baden in the Upper Rhine Plain of present-day southwestern Germany. He was the only son of Gerty Wankel (née Heidlauff) and Rudolf Wankel, a forest assessor. His father died in World War I. Thereafter, the family moved to Heidelberg. He went to high schools in Donaueschingen, Heidelberg, and Weinheim, and left school without Abitur in 1921. He learned the"
"Motorenwerke AG in Germany began development of the engine, with two models being built. The first, the DKM motor, was developed by Felix Wankel. The second, the KKM motor, developed by Hanns Dieter Paschke, was adopted as the basis of the modern Wankel engine. The basis of the DKM type of motor was that both the rotor and the housing spun around on separate axes. The DKM motor reached higher revolutions per minute and was more naturally balanced. However, the engine needed to be stripped to change the spark plugs and contained more parts. The KKM engine was simpler, having"
"company's revolutionary new Wankel engine technology. Chief engineer Ewald Praxl was given the assignment to develop the car, originally envisaged at 800 kg and 80 hp, starting from a clean sheet. Luthe was given responsibility for the design, working with the engineering team of Walter Froede and Georg Jungbluth, to utilize the compact Wankel engine, itself created by Felix Wankel. Luthe created a clean wedge shape with a large glasshouse, while the engineering team added innovations such as four-wheel independent suspension, semi-automatic transmission and inboard disc brakes to reduce unsprung mass. The Ro 80 still stands today as a milestone"
"completely different designs, primarily aircraft engines with their cylinders arranged in a circular fashion around the crankshaft. The four-stage cycle of intake, compression, ignition, and exhaust occur each revolution at each of the three rotor tips moving inside the oval-like epitrochoid-shaped housing, enabling the three power pulses per rotor revolution. The rotor is similar in shape to a Reuleaux triangle with the sides somewhat flatter. The design was conceived by German engineer Felix Wankel. Wankel received his first patent for the engine in 1929. He began development in the early 1950s at NSU, completing a working prototype in 1957. NSU"
"Wankel AG Wankel AG is a German aircraft engine and automotive engine manufacturer based in Kirchberg, Saxony. The company specializes in the design and manufacture of Wankel engines for ultralight aircraft and also for kart racing cars. The company is organized as an Aktiengesellschaft, a German share-owned limited corporation. The company's aircraft engine line consists of the single rotor Wankel AG LCR - 407 SGti four-stroke, displacement, liquid-cooled, fuel injected, gasoline, Wankel engine that produces at 6000 rpm and the dual rotor Wankel AG LCR - 814 TGti displacement, liquid-cooled, fuel injected, gasoline, Wankel engine design, that produces at 6000"
"Max Bentele Max Bentele (January 15, 1909 - May 19, 2006) was a German-born pioneer in the field of jet aircraft turbines and mechanical engineering. His contributions to the development of the Wankel engine earned him the title, ""Father of the Wankel Engine in the United States"". Bentele had been fascinated with engineering from an early age and graduated from the Technical University of Stuttgart in the fall of 1928 with a degree in mechanical and electrical engineering. Up until World War II he was working on turbine blade design for the Heinkel-Hirth, Germany's new jet engine. Bentele excelled at"
"Hurley acquired the Studebaker-Packard Corporation, and it was soon discovered that German automobile and engine producer NSU had been working on a remarkable engine concept: the Wankel rotary engine of Felix Wankel. Security surrounding this project was surprisingly lax for such a revolutionary invention, and it was even arranged for Bentele to study a model on his own, exploring the potential further development and production of such an engine at Curtiss-Wright. After a long weekend, Bentele emerged more than impressed with the project and became an admirer of a fellow mechanist Felix Wankel. Bentele was one of several British, German"
"had prior experience with Wankel applications in personal watercraft and power tools. The 1970 Hercules motorcycle prototype had shaft drive. It may be on display at Zentrum Industriekultur in Nuremberg. Information in the specifications box are from ""Cycle World"" unless noted. The engine was an air-cooled single-rotor Wankel designed by Sachs as a snowmobile engine, that produced at 6,500 RPM. The rotor spun about the frame's longitudinal axis (see longitudinal engine for the piston-engine equivalent), with power taken to the transmission through a 90° bevel gear. Fuelling was originally supplied by a 32 mm Bing carburetor. An electric starter with"
"$14 million, hoping to utilize such technology in its manufacture of farming and commercial equipment; nevertheless Bentele's work lives on in every Wankel engine produced around the world, as this technology was utilized by many manufacturers both in America and worldwide. Bentele's knowledge of turbine jets contributed to the successful development of American jet airplanes, which immediately dominated the field. Much of what we know today about these engines originated with Bentele. Although the unique rotary engine was designed by Felix Wankel, the commercial success and worldwide applications of these engines were largely achieved by Bentele. Today compact and efficient"
"by France for some months in 1945 and his laboratory was closed by French occupation troops. Wankel's work was confiscated and he was prohibited from doing more work. However, by 1951, he got funding from the Goetze AG company to furnish the new Technical Development Center in his private house in Lindau on Lake Constance. He began development of the engine at NSU Motorenwerke AG, leading to the first running prototype on 1 February 1957. Unlike modern Wankel engines, this 21 horsepower version had both the rotor and housing rotating. His engine design was first licensed by Curtiss-Wright in New"
"engine is typically constructed with an aluminium housing and a steel rotor, and aluminium expands more than steel when heated, a Wankel engine does not seize when overheated, unlike a piston engine. This is an important safety factor for aeronautical use. Considerable development of these designs started after World War II, but at the time the aircraft industry favored the use of turbine engines. It was believed that turbojet or turboprop engines could power all aircraft, from the largest to smallest designs. The Wankel engine did not find many applications in aircraft, but was used by Mazda in a popular"
"engineering awards, given by the SAE, is named after him. Max Bentele Max Bentele (January 15, 1909 - May 19, 2006) was a German-born pioneer in the field of jet aircraft turbines and mechanical engineering. His contributions to the development of the Wankel engine earned him the title, ""Father of the Wankel Engine in the United States"". Bentele had been fascinated with engineering from an early age and graduated from the Technical University of Stuttgart in the fall of 1928 with a degree in mechanical and electrical engineering. Up until World War II he was working on turbine blade design"
"engine model was also used in a Cessna Cardinal and a helicopter, as well as other airplanes. In Germany in the mid-1970s, a pusher ducted fan airplane powered by a modified NSU multi-rotor Wankel engine was developed in both civilian and military versions, Fanliner and Fantrainer. At roughly the same time as the first experiments with full-scale aircraft powered with Wankel engines, model aircraft-sized versions were pioneered by a combine of the well-known Japanese O.S. Engines firm and the then-extant German Graupner aeromodeling products firm, under license from NSU/Auto-Union. By 1968 the first prototype air-cooled, single-rotor glow plug-ignition, methanol-fueled 4.9"
"and could reach top speed 290 km/h but never reached serial production. Wankel became a success in business by securing license agreements around the world. By 1958 Wankel and partners had founded the ""Wankel GmbH"" company, providing Wankel with a share of the profits for marketing the engine. Among the licensees were Daimler-Benz since 1961, General Motors since 1970, Toyota since 1971. Royalties for the Wankel GmbH for licensure were 40%, later 36%. In 1971 Wankel sold his share of the license royalties for 50 million Deutschmarks to the English conglomerate Lonrho. The following year he got his Technical Development"
"model with a 9/10 hp engine was produced, but in the long run the car was not able to compete because of its friction drive and lack of a differential. In 1907, while Wenkel was travelling through South America, production of the Wenkelmobil was stopped because of falling demand. Max Wenkel Max Wenkel (2 February 1864 – (?)1943) was a German automobile pioneer and inventor. Like other automobile pioneers Max Wenkel began his career as an engineer and inventor with the construction of bicycles. He built his first pennyfarthing bicycle while still an apprentice engineer, and was soon taking part"
"F1. Norton improved on the Sachs's air cooling, introducing a plenum chamber. Suzuki also made a production motorcycle powered by a Wankel engine, the RE-5, using ferroTiC alloy apex seals and an NSU rotor in a successful attempt to prolong the engine's life. Mazda and NSU signed a study contract to develop the Wankel engine in 1961 and competed to bring the first Wankel-powered automobile to market. Although Mazda produced an experimental Wankel that year, NSU was first with a Wankel automobile for sale, the sporty NSU Spider in 1964; Mazda countered with a display of two- and four-rotor Wankel"
"roof, the Spider was distinguishable from the hard top car by a grill at the front. As with all NSU cars at the time, the engine was rear-mounted: in order to improve weight distribution, space was found for the Spider’s radiator and for its fuel tank ahead of the driver. The front luggage locker was in consequence small. There was a second luggage area in the rear of the car above the engine. It appears that NSU Spiders were painted either red or white. Invented by Felix Wankel, the Wankel engine differed from a piston engine because the quasi-oval design"
"rpm. The kart engines offered include the LCR 407 SG/K (KR) and LCR 407 SG/W, both single rotor, displacement, carburetor-equipped designs that produce at 6800 rpm, plus the LCR 407 SG/KR, a single rotor, displacement, carburetor-equipped design that produces at 6900 rpm. Summary of aircraft engines built by Wankel AG: Wankel AG Wankel AG is a German aircraft engine and automotive engine manufacturer based in Kirchberg, Saxony. The company specializes in the design and manufacture of Wankel engines for ultralight aircraft and also for kart racing cars. The company is organized as an Aktiengesellschaft, a German share-owned limited corporation. The"
"Center back from the Fraunhofer Society. From 1986 the Felix Wankel Institute cooperated with Daimler Benz AG. Daimler Benz provided the operating costs in return for the research rights. He sold the Institute to Daimler Benz for 100 million Marks. Wankel married Emma ""Mi"" Kirin in 1936. Though married until death, they had no children. He never had a driver's license, because he was extremely near-sighted. He was, however, the owner of an NSU Ro 80 with a Wankel engine, which was chauffeured for him. In 1969, Wankel was granted an honorary Doctorate of Engineering from Technical University Munich. He"
"the engine into series production with NSU (Ro80) and Citroën (GS Birotor) as part of the Comotor joint-venture between 1967 and 1977. Since the end of production of the Mazda RX-8 in 2012, the engine is produced only for single seater racing, with the one-make Star Mazda Championship being contested with a Wankel engine until 2017 (the series transitioned to using a Mazda-branded piston engine in 2018). Wankel engines can be classified by their geometric size in terms of radius (rotor center to tip distance, also the median stator radius) and depth (rotor thickness), and offset (crank throw, eccentricity, also"
"ingenious spatial imagination and became interested in the world of machines, especially combustion engines. After his mother was widowed, Wankel could not afford university education or even an apprenticeship. He was, however, able to teach himself technical subjects. At age 17 he told friends that he had dreamt of constructing a car with ""a new type of engine, half turbine, half reciprocating. It is my invention!"". True to this prediction, he conceived the Wankel engine in 1924 and won his first patent in 1929. During the early 1920s Wankel was a member of various radical right-wing and anti-Semitic organizations. In"
"found in a piston engine, the Wankel engine is constructed with an iron rotor within a housing made of aluminium, which has a greater coefficient of thermal expansion. This ensures that even a severely overheated Wankel engine cannot seize, as is likely to occur in an overheated piston engine. This is a substantial safety benefit when used in aircraft. In addition, the absence of valves and valve trains increases safety. GM tested an iron rotor and iron housing in their prototype Wankel engines, that worked at higher temperatures with lower specific fuel consumption. A further advantage of the Wankel engine"
"created by Étienne Lenoir around 1859 and the first modern internal combustion engine was created in 1876 by Nikolaus Otto (see ""Otto engine""). The term ""internal combustion engine"" usually refers to an engine in which combustion is intermittent, such as the more familiar four-stroke and two-stroke piston engines, along with variants, such as the six-stroke piston engine and the Wankel rotary engine. A second class of internal combustion engines use continuous combustion: gas turbines, jet engines and most rocket engines, each of which are internal combustion engines on the same principle as previously described. Firearms are also a form of"
"Rocketdyne, which was commissioned by DARPA to develop a compression-ignition Wankel engine for use in a prototype VTOL flying car called the ""Transformer"". The engine, based on an earlier concept involving an unmanned aerial vehicle called ""Endurocore"", powered by a Wankel diesel. plans to utilize Wankel rotors of varying sizes on a shared eccentric shaft to increase efficiency. The engine is claimed to be a 'full-compression, full-expansion, compression-ignition-cycle engine'. An October 28, 2010 patent by Pratt & Whitney Rocketdyne, describes a Wankel engine superficially similar to Rolls-Royce's earlier prototype, that required an external air compressor to achieve high enough compression"
"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 internal parts. It differs from the conceptually similar Wankel engine by using a generally prismatic shaped rotor that orbits the axis of the engine, without rotation, rather than the rotating trilobular rotor of the Wankel. The theoretical 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"
"against lighter, more powerful, 850 cc highly modified pure race cars. NSU Spider The NSU Spider is an automobile which was produced by NSU Motorenwerke AG from 1964 to 1967. The Spider was the first Western production car in the world to be powered by a Wankel rotary engine. The water-cooled single rotor engine and standard front disc brakes differentiated the car from other cars of similar type of the period. The body was designed by Bertone. First appearing at the Frankfurt Motor Show in 1964, the Spider featured a two-door cabriolet body based on that of the NSU Sport"
"for compression-ignition-cycle combustion. The design differs from Rolls-Royce's compression-ignition rotary, mainly by proposing an injector both in the exhaust passage between the combustor rotor and expansion rotor stages, and an injector in the expansion rotor's expansion chamber, for 'afterburning'. The British company Rotron, which specialises in unmanned aerial vehicle (UAV) applications of Wankel engines, has designed and built a unit to operate on heavy fuel for NATO purposes. The engines uses spark ignition. The prime innovation is flame propagation, ensuring the flame burns smoothly across the whole combustion chamber. The fuel is pre-heated to 98 degrees Celsius before it is"
"spinning at 7,500 rpm, the rotors are turning at a much slower 2,500 rpm. Pratt & Whitney Rocketdyne has been commissioned by DARPA to develop a diesel Wankel engine for use in a prototype VTOL flying car called the ""Transformer"". The engine, based on an earlier unmanned aerial vehicle Wankel diesel concept called ""Endurocore"". The sailplane manufacturer Schleicher uses Wankel engines in its self-launching models ASK-21 Mi, ASH-26E, ASH-25 M/Mi, ASH-30 Mi, ASH-31 Mi, ASW-22 BLE, and ASG-32 Mi. In 2013 e-Go aeroplanes, based in Cambridge, United Kingdom, announced that its new single-seater canard aircraft, the winner of a design"
"motorcycles, which were considered very reliable and sold under his own name. He later devoted himself to research on diesel engines for aircraft, turbine engines and the Wankel engine. Fritz Cockerell Fritz Cockerell (1889-1965) was a German pioneer of motorcycle, automotive and engine construction. Fritz Cockerell (born 25 November 1889 in Munich, died 16 April 1965) was a German pioneer of motorcycle, automotive and engine construction. His real name was Friedrich Gockerell, but in his published patent documents, he is referred to as Fritz Cockerell. Fritz Cockerell initially worked as a machinist in an airship factory and later in steam"
"only exhaust product of hydrogen combustion is water vapor. In 1807 Francois Isaac de Rivaz designed the first hydrogen-fueled internal combustion engine. In 1965, Roger Billings, then a high school student, converted a Model A to run on hydrogen. In 1970 Paul Dieges patented a modification to internal combustion engines which allowed a gasoline-powered engine to run on hydrogen . Mazda has developed Wankel engines burning hydrogen, which are used in the Mazda_RX-8_Hydrogen_RE. The advantage of using an internal combustion engine, like Wankel and piston engines, is the lower cost of retooling for production. HICE forklift trucks have been demonstrated"
"the tank for reuse. Normally known by the term ""rotary engine"", the usually air-cooled radial configuration, rotating-crankcase Otto cycle engines used by many ""pioneer era"" (1903-1914) aircraft, and World War I combat aircraft used this particular type of engine, inherently designed to have a total-loss lubrication system, with the motor oil held in a separate tank from the fuel in the vehicle, and ""not"" pre-mixed with it as with two-cycle engines, but mixed within the engine instead while running. Wankel engines are internal combustion engines using an eccentric rotary design to convert pressure into rotating motion. These engines exhibit some"
"Otto cycle, constant volume. The Wankel engine (rotary engine) does not have piston strokes. It operates with the same separation of phases as the four-stroke engine with the phases taking place in separate locations in the engine. In thermodynamic terms it follows the Otto engine cycle, so may be thought of as a ""four-phase"" engine. While it is true that three power strokes typically occur per rotor revolution, due to the 3:1 revolution ratio of the rotor to the eccentric shaft, only one power stroke per shaft revolution actually occurs. The drive (eccentric) shaft rotates once during every power stroke"