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The Mazda RX-7 is a front-engine, rear-wheel-drive, rotary engine-powered sports car that was manufactured and marketed by Mazda from 1978 until 2002 across three generations, all of which made use of a compact, lightweight Wankel rotary engine.
Eunos Cosmo engine at the Mazda Museum Rotary Engine 20B. In Le Mans racing, the first three-rotor engine used in the 757 was named the 13G. The main difference between the 13G and 20B is that the 13G uses a factory peripheral intake port (used for racing) and the 20B (production vehicle) uses side intake ports.
It was exported as the Mazda RX-3 in its first generation from 1971 to 1978, and as the Mazda RX-7 in its subsequent generations. For the original 1971 version of Savanna, Mazda fitted its 10A rotary engine to the Mazda Grand Familia to create a separately marketed product sold in coupé, sedan, and station wagon guises.
Although Mazda is well known for their Wankel "rotary" engines, the company has been manufacturing piston engines since the earliest years of the Toyo Kogyo company. Early on, they produced overhead camshaft, aluminum blocks, and an innovative block containing both the engine and transmission in one unit. This section summarizes piston engine ...
The RX-7 morphed into the RX-8 for the 2003 model year, but it sold poorly by comparison and Mazda ended the line in 2012. The rotary engine never caught on, in part because of its relatively poor ...
The Wankel engine is a type of rotary piston engine and exists in two primary forms, the Drehkolbenmotor (DKM, "rotary piston engine"), designed by Felix Wankel (see Figure 2.) and the Kreiskolbenmotor (KKM, "circuitous piston engine"), designed by Hanns-Dieter Paschke [2] (see Figure 3.), of which only the latter has left the prototype stage ...
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