According to Wikipedia Replica Watch, the principle of the Wankel engine is based on that of the vane pump, which dates back Rolex replicas to the second half of the 16th century. But it is only in the 1950s that the engine is developed Cartier replica watches in its current form, by that he left his name. More specifically, "the Wankel engine is a rotary engine operating according to the Beau de Rochas cycle.