Comments by "John Burns" (@johnburns4017) on "One Stroke Engines - 200% More Efficient??" video.

  1. Range extenders are by nature are part time engines. Most of the time the car will be charged from the grid. So engine efficiency does not have to be brilliant. What is important is low size and weight for packaging and smoothness - and storing the engine out of the way in a car. The Mazda MX-30 series hybrid has a Wankel range extender - a generator - designed specifically for constant speed running maximizing efficiency. Wankels are more efficient lasting longer when running at a constant speed. Electric motors turn the wheels. This is proving to be a decent combination. BTW, Wankel engines are about 23% more efficient when burning hydrogen. For sure the Wankel engine is not as good as a Liquid piston engine but this is great start.
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  2. All is not how it first appears. 10 gallon = 300 kWH. But the internal combustion engine ensures that 75% of that energy is wasted. So, to equal the Cybertruck in energy storage you would need 40 gallons (152 litres) not 10. Big difference. BTW, an Audi A3 has a tank capacity of 50 litres.
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