4 ms·

Is this the "inverted wankel/rotary" that made the tech news cycle about a year ago? https://www.engineering.com/story/update-wankel-20-the-return-of-the-rotar

Is this the "inverted wankel/rotary" that made the tech news cycle about a year ago? https://www.engineering.com/story/update-wankel-20-the-return-of-the-rotary-engine https://www.engineering.com/story/update-wankel-20-the-retur... Mazda also released the spark-compression gasoline engine in the current round of Mazda designs. PHEVs allow gas engines to run on the Atkinson cycle. Range extenders or an emergency recharger is about all you can use them for. We do need an ultracompact engine for what I think is a sweet spot for consumer transition: 100 miles of LFP battery range + a compact range extender gas engine until charging infrastructure is ready and fast charging works reasonably well.

elromulous 5y ago
No, the thing you're talking about is [1], and is quite different from OPs link. That being said, I came here to point out that new engine designs have been showing for literally the last a hundred years. There's a reason basically only pistons have succeeded. Scaling + reliability is really hard in a thing that is literally in the state of combusting thousands of times a minute. That being said, the wankel (more specifically Mazda's 13b) is still my favorite engine design ever. [1] https://www.liquidpiston.com/ https://www.liquidpiston.com/
- AtlasBarfed 5y ago
  What are you favorites about it? I know they have great power:weight, but don't they have fundamental shortfalls in pollutants/emissions and (strangely, considering the weight advantage) fuel economy? How would a Wankel that only had to do recharging (fixed gear, etc) serve in that fashion? A scaled down rotary that was portable might be a good "oh shit I ran out of charge" portable recharger, but then again, a fuel cell might be better for that.