What is Wankel Engine? Introduction - This Engine works on ordinary Otto cycle, but differs from the reciprocating I.C. Engine in that the piston in this case undergoes rotary instead of reciprocating motion. This design of Felix Wankel has provided a new challenge to the existing reciprocating engine. This has been developed by N.S.U. of Germany and Curtis Wright Co. of U.S.A. for commercial purposes. However, research is still going on to make it more efficient and to solve the sealing problem more efficiently. Mazda of Japan introduced its Wankel Engine sports car, RX-7 in 1979, which was most successful rotary engine powered car and was sold till 1995. Mazda R-8, a new car from Mazda has rotary engine called Renesis, which is a two rotor engine and has been named the international engine of the year 2003. Construction - Fig 1 shows in simplified form the construction of Wankel Engine. Three lobed rotor rotates in the housing, which is epitrochoidal in shape. Thi...
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