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What we are witnessing is the reemergence of the Mazda power unit that utilizes a rounded triangle shaped rotor, as opposed to a piston in a stationary cylinder, to deliver motion power through the 4 cycles of the development exchange through the burning of a combustible fuel mixed with air.
This excerpted and edited from Car and Driver –
Mazda MX-30 R-EV Brings Back the Rotary, but Not Like You Imagined
Mazda reduced the size of the lithium-ion battery pack, as the R-EV has a 17.8 kWh lithium-ion pack compared with the EV version’s approximately 32.0-kWh pack. This allows it to go a measly 53 miles on a charge per the WLTP. But when the battery is depleted, the 830-cc 74-hp rotary engine kicks in to supply charge while on the move. The Mazda’s 13-gallon fuel tank is larger than other such “range-extender” setups including the BMW i3 and Chevy Volt, but Mazda hasn’t provided a longer range estimate that includes the gasoline engine’s range boost.
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The R-EV’s electric motor is also more powerful than the EV version’s, providing 167 horsepower to the front wheels. Mazda claims it will get to 62 mph in 9.1 seconds, which would be roughly equivalent to the already sluggish EV version’s acceleration. The 3674-pound MX-30 EV got to 60 mph in 8.7 seconds in our testing, and the R-EV’s extra 24 horsepower would likely be offset by the extra weight of the rotary, as the claimed curb weight is 3920 pounds.
The problem we, at EVHN, are seeing is that this approach, as produced, does not deliver a technological argument as one would wish. For Example – Mazda is unwilling to publish what the extended range that could be expected.
One source speculates about a total distance of 380 miles and so there is no real argument other than PR for Mazda due to the use of Rotary as opposed to any significant contribution to any overall improvements in “Delta” performance measurements.
That’s the spin as witnessed early in the adoption of rotary power for self-charging/extended range solutions in EV mobility this day.
… notes from The EDJE