The Wankel engine invented by German engineer Felix Wankel Felix Heinrich Wankel was a German mechanical engineer and inventor after whom the Wankel engine was named, is a type of internal combustion engine The internal combustion engine is an engine in which the combustion of a fuel occurs with an oxidizer (usually air) in a combustion chamber. In an internal combustion engine the expansion of the high temperature and pressure gases, which are produced by the combustion, directly applies force to a movable component of the engine, such as the which uses a rotary design A pistonless rotary engine is an internal combustion engine that does not use pistons in the way a reciprocating engine does, but instead uses one or more rotors, sometimes called rotary pistons. An example of a pistonless rotary engine is the Wankel engine to convert pressure into a rotating motion instead of using reciprocating pistons A reciprocating engine, also often known as a piston engine, is a heat engine that uses one or more reciprocating pistons to convert pressure into a rotating motion. This article describes the common features of all types. The main types are: the internal combustion engine, used extensively in motor vehicles; the steam engine, the mainstay of the. Its four-stroke cycle Today, internal combustion engines in cars, trucks, motorcycles, aircraft, construction machinery and many others, most commonly use a four-stroke cycle. The four strokes refer to intake, compression, combustion , and exhaust strokes that occur during two crankshaft rotations per working cycle of the gasoline engine and diesel engine. A less takes place in a space between the inside of an oval-like epitrochoid An epitrochoid is a roulette traced by a point attached to a circle of radius r rolling around the outside of a fixed circle of radius R, where the point is a distance d from the center of the exterior circle-shaped housing and a rotor that is similar in shape to a Reuleaux triangle A Reuleaux triangle is, apart from the trivial case of the circle, the simplest and best known Reuleaux polygon, a curve of constant width. The separation of two parallel lines tangent to the curve is independent of their orientation. The term derives from the name of Franz Reuleaux, a 19th-century German engineer who did pioneering work on ways but with sides that are somewhat flatter. This design delivers smooth high-rpm Revolutions per minute is a unit of frequency of rotation: the number of full rotations completed in one minute around a fixed axis. It is used as a measure of rotational speed of a mechanical component power from a compact size. Since its introduction the engine has been commonly referred to as the rotary engine, though this name is also applied to several completely different designs A pistonless rotary engine is an internal combustion engine that does not use pistons in the way a reciprocating engine does, but instead uses one or more rotors, sometimes called rotary pistons. An example of a pistonless rotary engine is the Wankel engine.
The engine was invented by German The German people are people descended from several Germanic tribes that inhabited what became the German-speaking part of Europe, collectively known as Germany engineer Felix Wankel Felix Heinrich Wankel was a German mechanical engineer and inventor after whom the Wankel engine was named. He began its development in the early 1950s at NSU Motorenwerke AG NSU Motorenwerke AG, , was a German manufacturer of cars and motorcycles, which was founded in 1873. It was acquired by Volkswagen Group in 1969. VW merged the company with Auto Union, to eventually evolve into Audi as it is known today (NSU) before completing a working, running prototype in 1957. NSU then licensed the concept to companies around the world, which have continued to improve the design.
Because of their compact design, Wankel rotary engines have been installed in a variety of vehicles and devices such as automobiles An automobile, motor car or car is a wheeled motor vehicle used for transporting passengers, which also carries its own engine or motor. Most definitions of the term specify that automobiles are designed to run primarily on roads, to have seating for one to eight people, to typically have four wheels, and to be constructed principally for the (including racing cars Auto racing is a motorsport involving racing cars. It is one of the world's most watched television sports), along with aircraft An aircraft is a vehicle which is able to fly by being supported by the air, or in general, the atmosphere of a planet. An aircraft counters the force of gravity by using either static lift or by using the dynamic lift of an airfoil, or in a few cases the downward thrust from jet engines, go-karts Kart racing or karting is a variant of open-wheel motor sport with small, open, four-wheeled vehicles called karts, go-karts, or gearbox/shifter karts depending on the design. They are usually raced on scaled-down circuits. Karting is commonly perceived as the stepping stone to the higher and more expensive ranks of motorsports, personal water craft A personal water craft is a recreational watercraft that the rider sits or stands on, rather than inside of, as in a boat. Models have an inboard engine driving a pump jet that has a screw-shaped impeller to create thrust for propulsion and steering. They are often referred by the brand names Jet Ski, WaveRunner or Sea-Doo, chain saws A chainsaw is a portable mechanical saw, powered by electricity, compressed air, hydraulic power, or most commonly a two-stroke engine. It is used in activities such as tree felling, limbing, bucking, pruning, by tree surgeons to fell trees and remove branches and foliage, to fell snags and assist in cutting firebreaks in wildland fire suppression,, and auxiliary power units The primary purpose of an aircraft APU is to provide power to start the main engines. Turbine engines have large, heavy rotors that must be accelerated to a high rotational speed in order to provide sufficient air compression for self-sustaining operation. This process takes significantly longer and requires much more energy than starting a. The most extensive automotive use of the Wankel engine has been by the Japanese company Mazda Mazda Motor Corporation (TYO: 7261) is a Japanese automotive manufacturer based in Fuchū, Aki District, Hiroshima Prefecture, Japan.
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History
First DKM Wankel Engine DKM 54 (Drehkolbenmotor), at the Deutsches Museum in Bonn, Germany Bonn is the 19th largest city in Germany. Located in the Cologne/Bonn Region, about 20 kilometres south of Cologne on the river Rhine in the Federal State of North Rhine-Westphalia, it was the capital of West Germany from 1949 to 1990 and the official seat of government of united Germany from 1990 to 1999. Starting in 1998, many national First KKM Wankel Engine NSU KKM 57P (Kreiskolbenmotor), at Autovision und Forum, GermanyIn 1951, the German The German people are people descended from several Germanic tribes that inhabited what became the German-speaking part of Europe, collectively known as Germany engineer Felix Wankel began development of the engine at NSU Motorenwerke AG NSU Motorenwerke AG, , was a German manufacturer of cars and motorcycles, which was founded in 1873. It was acquired by Volkswagen Group in 1969. VW merged the company with Auto Union, to eventually evolve into Audi as it is known today, where he first conceived his rotary engine in 1954 (DKM 54, Drehkolbenmotor). The so-called KKM 57 (the Wankel rotary engine, Kreiskolbenmotor) was constructed by NSU engineer Hanns Dieter Paschke in 1957 without the knowledge of Felix Wankel, who remarked "you've turned my race horse into a plow mare".[1] The first working prototype DKM 54 was running on February 1, 1957 at the NSU research and development department Versuchsabteilung TX.[2]
Considerable effort went into designing rotary engines in the 1950s and 1960s. They were of particular interest because they were smooth and quiet running, and because of the reliability resulting from their simplicity. An early problem of buildup of crackles in the epitrochoid surface was solved by installing the spark plugs in a separate metal piece instead of screwing them directly into the block.[citation needed]
In the United States, in 1959 under license from NSU, Curtiss-Wright The Curtiss-Wright Corporation was the largest aircraft manufacturer in the United States at the end of World War II, but has evolved to become a component manufacturer, specializing in actuators, controls, valves, and metal treatment pioneered minor improvements in the basic engine design. In Britain, in the 1960s, Rolls Royce Rolls-Royce Limited was a British car, and from 1914, aero-engine manufacturing company founded by Charles Stewart Rolls and Henry Royce on 15 March 1906 as the result of a partnership formed in 1904. In 1971, Rolls-Royce was crippled by the development of the advanced RB211 jet engine, resulting in the nationalisation of the company as Rolls- Motor Car Division at Crewe, Cheshire, pioneered a two-stage diesel A diesel engine is an internal combustion engine that uses the heat of compression to initiate ignition to burn the fuel, which is injected into the combustion chamber during the final stage of compression. This is in contrast to spark ignition engines such as a petrol engine (known as a gasoline engine in North America) or gas engine (using a version of the Wankel engine.[3]
Also in Britain, Norton Motorcycles developed a Wankel rotary engine for motorcycles A motorcycle is a single-track, two-wheeled motor vehicle. Motorcycles vary considerably depending on the task for which they are designed, such as long distance travel, navigating congested urban traffic, cruising, sport and racing, or off-road conditions, based on the Sachs air cooled Wankel that powered the DKW/Hercules W-2000 motorbyke, which was included in their Commander and F1; Suzuki Suzuki Motor Corporation is a Japanese multinational corporation headquartered in Hamamatsu, Japan that specializes in manufacturing compact automobiles, a full range of motorcycles, all-terrain vehicles (ATVs), outboard marine engines, wheelchairs and a variety of other small internal combustion engines. Suzuki is the 9th largest automobile also made a production motorcycle with a Wankel engine, the RE-5, where they used ferrotic alloy apex seals and an NSU rotor in a successful attempt to prolong engine's life. In 1971 and 1972 Arctic Cat Arctic Cat is a North American manufacturer of snowmobiles and all-terrain vehicles. The company is based in Thief River Falls, MN produced snowmobiles powered by 303 cc Wankel rotary engines manufactured by Sachs in Germany. Deere & Company Deere & Company, usually known by its brand name John Deere , is an American corporation based in Moline, Illinois, and the leading manufacturer of agricultural machinery in the world. In 2008, it was listed as 102nd in the Fortune 500 ranking. Deere and Company agricultural products, usually sold under the John Deere name, include tractors, designed a version that was capable of using a variety of fuels. The design was proposed as the power source for United States Marine Corps The United States Marine Corps is a branch of the United States armed forces responsible for providing force projection from the sea, using the mobility of the United States Navy to rapidly deliver combined-arms task forces. It is one of seven uniformed services of the United States. In the civilian leadership structure of the United States combat vehicles and other equipment in the late 1980s.[4]
After occasional use in automobiles, for instance by NSU NSU Motorenwerke AG, , was a German manufacturer of cars and motorcycles, which was founded in 1873. It was acquired by Volkswagen Group in 1969. VW merged the company with Auto Union, to eventually evolve into Audi as it is known today with their Ro 80 The NSU Ro 80 was a technologically advanced large sedan-type automobile produced by the German firm of NSU from 1967 until 1977. Most notable was the powertrain; a 113 bhp , 995 cc twin-rotor Wankel engine driving the front wheels through a semi-automatic transmission employing an innovative vacuum system. It was voted Car of the Year for 1968 by[5] and Citroën Citroën is a major French automobile manufacturer, part of the PSA Peugeot Citroën group, using engines produced by Comotor The Company Comotor SA was a joint venture between NSU and Citroën, created in Luxembourg in April 1967. Its goal was to produce Wankel engines, with their M35 and GS Birotor, the most extensive automotive use of the Wankel engine has been by Mazda Mazda Motor Corporation (TYO: 7261) is a Japanese automotive manufacturer based in Fuchū, Aki District, Hiroshima Prefecture, Japan. Additionally, there were abortive attempts to design Wankel-engine automobiles An automobile, motor car or car is a wheeled motor vehicle used for transporting passengers, which also carries its own engine or motor. Most definitions of the term specify that automobiles are designed to run primarily on roads, to have seating for one to eight people, to typically have four wheels, and to be constructed principally for the by General Motors General Motors Company, also known as GM, is a United States-based automaker with headquarters in Detroit, Michigan. GM manufactures cars and trucks in 34 countries, recently employed 244,500 people around the world, and sells and services vehicles in some 140 countries. By sales, GM ranked as the largest US automaker and the world's second, which seems to have concluded that the Wankel engine was slightly more expensive to build than an equivalent reciprocating engine, and Mercedes-Benz Mercedes-Benz is a German manufacturer of automobiles, buses, coaches, and trucks. It is currently a division of its parent company, Daimler AG (formerly DaimlerChrysler AG), after previously being owned by Daimler-Benz. Mercedes-Benz has its origins in Karl Benz's creation of the first petrol-powered car, the Benz Patent Motorwagen, patented in.
Mazda Mazda Motor Corporation (TYO: 7261) is a Japanese automotive manufacturer based in Fuchū, Aki District, Hiroshima Prefecture, Japan's first Wankel engine, at the Mazda Museum in Hiroshima, JapanAfter years of development, Mazda's first Wankel engine All Mazda Wankel engines are essentially a single family — they all derive from experiments in the early 1960s by Felix Wankel, a German engineer. Over the years, displacement has been increased somewhat and turbocharging has been added to great effect car was the 1967 Cosmo There have been four generations of Mazda automobiles which went by the name of Cosmo, although they are not all particularly related. All were Grand tourers, with the first proving a successful launch for the Mazda Wankel engine and acting as a "halo" vehicle for the new Mazda brand. Later Cosmos competed in the ultra-high luxury. The company followed with a number of Wankel ("rotary" in the company's terminology) vehicles, including a bus and a pickup truck. Customers often cited the cars' smoothness of operation. However, Mazda chose a method to comply with hydrocarbon In organic chemistry, a hydrocarbon is an organic compound consisting entirely of hydrogen and carbon. Hydrocarbons from which one hydrogen atom has been removed are functional groups, called hydrocarbyls. Aromatic hydrocarbons , alkanes, alkenes, cycloalkanes and alkyne-based compounds are different types of hydrocarbons emission standards Emissions standards are requirements that set specific limits to the amount of pollutants that can be released into the environment. Many emissions standards focus on regulating pollutants released by automobiles and other powered vehicles but they can also regulate emissions from industry, power plants, small equipment such as lawn mowers and that, while less expensive to produce, increased fuel consumption, just before a sharp rise in fuel prices. Mazda later abandoned the Wankel in most of their automotive designs, but continued using it in their RX-7 The Mazda RX-7 is a sports car produced by the Japanese automaker Mazda from 1978 to 2002. The original RX-7 featured a 1146 cc twin-rotor Wankel rotary engine and a sporty front-midship, rear-wheel drive layout. The RX-7 was a direct replacement for the RX-3 and subsequently replaced all other Mazda rotary cars with the exception of the Cosmo sports car Sports cars can be either luxurious or spartan, but driving and mechanical performance is requisite. Many drivers[who?] regard brand name and the subsequent racing reputation and history as important indications of sporting quality , but some exotic car brands, such as Lamborghini, which do not race or build racing cars, are also highly regarded until August 2002 (RX-7 importation for Canada ceased with only the 1993 year being sold. The USA ended with the 1994 model year with remaining unsold stock being carried over as the '1995' year.). The company normally used two-rotor designs, but the 1991 Eunos Cosmo used a twin-turbo A turbocharger, or turbo, is a gas compressor that is used for forced-induction of an internal combustion engine. A form of supercharger, the turbocharger increases the density of air entering the engine to create more power. A turbocharger has the compressor powered by a turbine, driven by the engine's own exhaust gases, rather than direct three-rotor engine. In 2003, Mazda introduced the Renesis All Mazda Wankel engines are essentially a single family — they all derive from experiments in the early 1960s by Felix Wankel, a German engineer. Over the years, displacement has been increased somewhat and turbocharging has been added to great effect engine with the RX-8 The Mazda RX-8 is a sports car manufactured by Mazda Motor Corporation. It first appeared in 2001 at the North American International Auto Show. It is the successor to the RX-7 and, like its predecessors in the RX range, it is powered by a rotary engine. The RX-8 began North American sales in the 2004 model year. The Renesis engine relocated the ports for exhaust and intake from the periphery of the rotary housing to the sides, allowing for larger overall ports, better airflow, and further power gains. Early Wankel engines had also side intake and exhaust ports, but the concept was abandoned because of carbon buildup in ports and side of rotor. The Renesis engine solved the problem by using a keystone scraper side seal.[6] The Renesis is capable of delivering 238 hp (177 kW) with better fuel economy, reliability, and environmental friendliness than previous Mazda rotary engines,[7] all from its 1.3 L displacement.
In 1961, the Soviet The Union of Soviet Socialist Republics (USSR, Russian: Союз Советских Социалистических Республик, tr. Soyuz Sovetskikh Sotsialisticheskikh Respublik IPA: [sɐˈjus sɐˈvʲeʦkʲɪx səʦɨəlʲɪˈstʲiʨɪskʲɪx rʲɪsˈpublʲɪk] , abbreviated СССР, SSSR), informally known as the Soviet Union (Russian: research organization of NATI, NAMI and VNIImotoprom started experimental development, and created experimental engines with different technologies.[8]
Soviet automobile manufacturer AvtoVAZ also experimented with the use of Wankel engines in cars but without the benefit of a license.[9] In 1974 they created a special engine design bureau, which in 1978 designed an engine designated as VAZ-311. In 1980, the company started delivering Wankel-powered VAZ-2106s (VAZ-411 engine with two-rotors) and Ladas, mostly to security services, of which about 200 were made.[10][11] The next models were the VAZ-4132 and VAZ-415. Aviadvigatel, the Soviet aircraft engine design bureau, is known to have produced Wankel engines with electronic injection for aircraft and helicopters, though little specific information has surfaced.
Although many manufacturers licensed the design, and Mercedes-Benz used it for their C111 concept car, only Mazda has produced Wankel engines in large numbers. American Motors (AMC) was so convinced "...that the rotary engine will play an important role as a powerplant for cars and trucks of the future...", according to Chairman Roy D. Chapin Jr., that the smallest U.S. automaker signed an agreement in February 1973, after a year's negotiations, to build Wankels for both passenger cars and Jeeps, as well as the right to sell any rotary engines it produces to other companies.[12][13] It even designed the unique Pacer around the engine, even though by then, AMC had decided to buy the Wankel engines from GM instead of building them itself. However, GM's engines had not reached production when the Pacer was to hit the showrooms. Part of the demise of this feature was the 1973 oil crisis with rising fuel prices, and also concerns about proposed US emission standards legislation. General Motors' Wankel did not comply with those emission standards, so in 1974 the company canceled its development, although GM claimed having solved the fuel consumption problem; unfortunately, they never published the results of their research. This meant the Pacer had to be reconfigured to house AMC's venerable AMC Straight-6 engine with rear-wheel drive.
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longer trips, the batteries are recharged with the help of a so-called range extender, in fact a single-rotor 254 cc . Wankel engine. . The range gained by using the extender can reach 200 kilometers (124.27 miles). ...
Q. how can i make a wankel engine by my own?
Asked by dnns_michalopoulos - Sun Sep 7 16:22:33 2008 - - 1 Answers - 0 Comments
A. Get to be a whizz at CNC and you'll also need to study metallurgy to choose the exact alloys that are required. Then you can find the basics of the design online at places like this one:
Answered by Peter K - Sun Sep 7 16:31:29 2008
