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Mazda's first prototype Wankel was the 40A, a single-rotor engine very much like the NSU KKM400. Although never produced in volume, the 40A was a valuable testbed for Mazda engineers, and quickly demonstrated two serious challenges to the feasibility of the design: "chatter marks" in the housing, and heavy oil consumption.
The Mazda RX-8 Hydrogen RE is a 2003 bi-fuel version of the RX-8 sports car, in which the twin-rotor wankel rotary engine is configured to run on either hydrogen or gasoline. This is the fifth Mazda vehicle to be fitted with a hydrogen wankel rotary engine .
After Mazda RX-8 production ceased in 2013, Mazda has carried on with testing prototypes to re-introduce the rotary as part of the "SkyActiv" lineup, dubbed SkyActiv R, displacing 1600 cc and featuring direct injection, laser ignition and forced induction. Wankel family – 1.0 L-2.0 L Wankel (1967–present) 10A – 1.0 L (1967–1973)
Mazda and NSU signed a study contract to develop the Wankel engine in 1961 and competed to bring the first Wankel-powered automobile to the market. Although Mazda produced an experimental rotary that year, NSU was the first with a rotary automobile for sale, the sporty NSU Spider in 1964; Mazda countered with a display of two- and four-rotor ...
Mazda 767B Central Circuit, Hyōgo Prefecture The Mazda 767/767B are prototype racing cars that were built by Mazdaspeed for the 24 Hours of Le Mans running under the IMSA -spec GTP class. The 767 replaced the 757 in 1988, upgrading to a newer and larger 4-rotor 13J Wankel engine which produced nearly 600 hp (450 kW).
The Mazda Roadpacer is a full-size sedan that was manufactured by Mazda in Japan between April 1975 and 1977, although the last car was not sold until 1979. It was based on the Australian Holden HJ and HX series Premier. [1] Premiers were shipped to Japan without engines or transmissions, and Mazda fitted a 1.3-liter 13B Wankel engine into the
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 mechanical stress, lower vibration, higher compression, or less mechanical complexity.
The rotors are connected with a gear ratio of 1 : 1 and rotate in the same direction. Unlike the R5 prototype, the 2-R6 uses the exhaust gas energy with its compression rotor instead of an external exhaust gas turbine. Torque is not taken off the combustion rotor, but the compression rotor instead.