The next-gen “Wankel” engine will likely be used in hybrid powertrains, or as a range extender for all-electric models
- Mazda’s CEO says the company is “very close” to finishing a twin-rotary engine that can meet strict emissions regulations
- Two rotors will make the engine powerful enough for U.S. buyer preferences
- Its first appearance could potentially be in a range-extended electric sports car
He added that, “If we are thinking about the U.S. market, one rotor is not enough. Two rotors are needed to generate more power, which is more suitable to U.S. market characteristics.”
The two rotors are on one shaft, but each spins separately in its own chamber. He added that more power is necessary because “we need to generate more electricity.” And that brings us to the Iconic SP concept.
Rotary engines are inherently inefficient, with poor thermal efficiency and unburned fuel that makes it into the exhaust. Moro admitted that getting one to meet stringent tailpipe regulations “is going to be a significant challenge,” but that the company has “tested with the single rotor,” and a second rotor is the next step.
That inefficiency also makes them thirstier than conventional engines; but if Mazda’s innovations into emissions don’t also have a side effect of improvements at the pumps, a thirstier engine that’s only meant as a range extender to an electric driveline likely won’t be much of an issue for drivers.
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