I don't get it. How is this engine going to save internal combustion? Ok, it's a small engine with a lot of power, and probably has some cute technical details, but what's the efficiency?
Almost one third of all greenhouse emissions come from transportation, which is the same as saying from ICE's. There are 2 ways to reduce that: replace ICEs with electric motors, or increase their efficiency. If you manage to double the efficiency of ICE's, you're doing as good as replacing half of the ICEs with electric motors. If you increase their efficiency by 20%, it's like replacing 20% of the ICEs with electric motors.
So, yes, you could certainly revive ICEs, but only if you dramatically increase their efficiency.
Now, a typical ICE has an efficiency of 25%. Nissan is working on an ICE with an efficiency of 50% [1]. That thing can save ICEs. Anything else, it's just word spinning.
Almost one third of all greenhouse emissions come from transportation, which is the same as saying from ICE's. There are 2 ways to reduce that: replace ICEs with electric motors, or increase their efficiency. If you manage to double the efficiency of ICE's, you're doing as good as replacing half of the ICEs with electric motors. If you increase their efficiency by 20%, it's like replacing 20% of the ICEs with electric motors.
So, yes, you could certainly revive ICEs, but only if you dramatically increase their efficiency.
Now, a typical ICE has an efficiency of 25%. Nissan is working on an ICE with an efficiency of 50% [1]. That thing can save ICEs. Anything else, it's just word spinning.
[1] https://www.greencarreports.com/news/1131416_nissan-claims-5...