ENRESO WORLD - I Lab Wankel Engine Istas René Graduated in Autmotive Technologies 8-10-2019 Introduction This work is a tribute to Felix Wankel. His engine concept was completely different from the conventional engines and revolutionary. Despite the engine was removed, some car brands (especially Mazda) and some other manufacturers still investigating for its disadvantages can not be converted to its advantages. Happy reading Istas René ENRESO WORLD - ILab Page 2 FELIX WANKEL Inventor of the WANKEL ENGINE BORN August 13, 1902 Lahr, Germany DIED ENRESO WORLD - ILab Page 3 October 9, 1988 (aged 86) Lindau, Germany During the early 1920s Wankel was a member of various radical right-wing and anti- Semitic organizations. In 1921 he joined the Heidelberg branch of the Deutschvölkischer Schutz und Trutzbund and in 1922 he became a member of the NSDAP, the National Socialist German Workers Party (or "Nazi Party") , which was banned soon afterwards. Wankel founded and led youth groups associated with a cover-up organization of the NSDAP. With them he conducted paramilitary training, scouting games and night walks. When his high esteem for technical innovations was not widely shared among the German Youth Movement, he was offered instead the opportunity to talk about the issue of technology and education to Adolf Hitler and other leading National Socialists in 1928. In the meantime Wankel's mother had helped founding the local chapter of the NSDAP in his hometown Lahr. Here Wankel not only rejoined the party in 1926, but also met Gauleiter Robert Heinrich Wagner. In 1931 Wagner entrusted Wankel with the leadership of the Hitler Youth in Baden. But both soon fell out with each other, because Wankel tried to put a stronger emphasis on military training, whereas Wagner wished for the Hitler Youth to be a primarily political organization. In a particularly bitter and ugly controversy Wankel publicly accused Wagner of corruption. Wagner paid back by stripping Wankel of his office by early 1932 and managed to have him expelled from the party in October 1932. Wankel, who sympathized with the social- revolutionary wing of the NSDAP among Gregor Strasser anyway, then founded his own National Socialist splinter group in Lahr and continued his attacks on Wagner. Since the Nazi's seizure of power on 30 January 1933 had strengthened his position, Wagner had Wankel arrested and imprisoned in the Lahr jail in March 1933. Only by intervention of Hitler's economic adviser Wilhelm Keppler with Hitler himself, Wankel was set free in September 1933. Keppler had been a friend of Wankel's and an ardent supporter of his technological endeavors since 1927. He now helped Wankel to get state contracts and his own Wankels Versuchs Werkstätten in Lindau. Wankel tried to rejoin the NSDAP in 1937, but was turned down. By the help of Keppler, however, he was admitted to the SS in 1940 in the rank of Obersturmbannführer. Two years later his membership was revoked for reasons unknown. During World War II, Wankel developed seals and rotary valves for German air force aircraft and navy torpedoes, for BMW and Daimler-Benz. After the war, he was imprisoned 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 Jersey, United States. On 19 January 1960 the rotary engine was presented for the first time to specialists and the press in a meeting of the German Engineers' Union at the Deutsches Museum in Munich. In the same year, with the KKM 250, the first practical rotary engine was presented in a ENRESO WORLD - ILab Page 4 converted NSU Prinz. At this time the "Wankel engine" became synonymous with the rotary engine, whereas previously it was called the "Motor nach System NSU/Wankel". At the 1963 IAA, the NSU company presented the NSU Wankel-Spider, the first consumer vehicle, which went into production in 1964. Great attention was received by the NSU in August 1967 for the very modern NSU Ro 80, which had a 115-horsepower engine with two rotors. It was the first German car selected as "Car of the Year" in 1968. In Japan, the manufacturer Mazda solved the engine's chatter marks problem. The engine has been successfully used by Mazda in several generations of their RX-series of coupés and sedans, including the Mazda Cosmo, R100, the RX-7 and more recently the RX-8. Mercedes-Benz completed its C111 experimental model in 1969 with 3-rotor Wankel engine. In 1970, the next model had a 4-rotor Wankel engine 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 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 was known for his championing of animal rights and opposition to the use of animals in testing. Wankel died in Heidelberg, aged 86. His grave may be found in the Bergfriedhof of Heidelberg. After his death, the Felix Wankel Foundation sold its real estate property to Volkswagen AG. The Heidelberg Fire Department showcases his last workshop. Wankel's papers are archived in the Technoseum in Mannheim. Furthermore, there is an exhibition "AUTOVISION · Tradition & Forum" in Altlußheim, a permanent showing of over 80 rotary engines and many cars equipped with Wankel motors. Honers and Awards • Honorary doctorate degree from Technische Universität München, 5 December 1969. • The Federation of German Engineers (VDI) Gold Medal, 1969. • The Grand Federal Service Cross, Germany's highest civilian honor, 1970 • John Price Wetherill Medal, Philadelphia, 1971. • The Bavarian Service Medal, 1973. • The "Honour Citizen" of Lahr, 1981, and the title of Professor in 1987. ENRESO WORLD - ILab Page 5 • The Soichiro Honda Medal, 1987. • Honorary citizenship of Lindau (declined) ENRESO WORLD - ILab Page 6 ENRESO WORLD - ILab Page 7 What Data Based on a Mazda RX-8 RENESIS rotary engine-extensively. First of all, I wondered about the still very high fuel consumption of the engine. Furthermore, I read in the article: "it is a motorcycle with two discs each having a capacity of 654 cm3, 1308 cm3 so total." {discussionpoint taxes}.Also there was the eccentric shaft rotates three times faster than the rotor. A Wankel rotary piston has three rooms. In each room is set a four-stroke process off (suction, compression, combustion, exhaust systems) without that there takes place simultaneously the same part of the four-stroke process. As the eccentric shaft rotates three times as fast as the rotor find one combustion space per revolution of the eccentric shaft. The four-stroke process is possible because the chamber volume changes from a minimum to a maximum, then again from a maximum to a minimum and so on. Thus, there are, just as in a normal impact piston, four volume changes with an associated phase or stroke of the four stroke process. As the eccentric shaft is rotated three times, there has been a full-stroke process in one room. There are the RX-8 three bedrooms and two rotors, a total of six rooms. The total chamber volume is: 6 × 654 = 3924 cm 3. The power formula is: P = pxVxn / C. Herein P is the power (kW), p is the mean pressure (bar), V is the total cylinder or chamber volume (cm3), n the number of revolutions (r / min), and C stands for the constant x conversion factor (6 × 100,000). For each type of engine to systematically answer some questions before we can enter the correct power formula: 1 What is the average pressure during the combustion? 2 What is the cylinder volume, or the room in which the combustion take place? 3 How many cylinders or rooms are? 4 With what speed turns the crankshaft or eccentric? 5 How many rotations makes the crankshaft or eccentric by combustion of one cylinder or one room? The Renesis HP Wankel engine delivers 169 kW at 8200 t / min. If we fill in the power formula, there px3924x8200 = 169 / Cx6x100.000. The constant C is a Wankel 3 because there will one combustion place every three rotations of the eccentric shaft. Thus, we can calculate that p = 9.5 bar, even at the maximum torque the motor has only 10.2 bar.