Comments by "David Elliott" (@davidelliott5843) on "See Thru Liquid Piston Rotary Engine - In Slow Motion" video.

  1. Wankel is effectively a two stroke giving three bangs per revolution from one combustion chamber. LP is a four stroke with three chambers also doing three bangs per rev. LP has fewer losses and better combustion giving considerably more efficiency. The highly diluted exhaust makes catalytic converters unlikely to work. But is a cat really needed?
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  2. Swapping the rotor/stator shapes solves the tip seal problem and the spark plug blow-by problem and the high quench problem and the early blowdown problem. The convoluted intake gas flow isn’t ideal but the design simplicity is genius.
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  3. The name of this engine is silly. But the idea is brilliant. At a stroke, they removed virtually all of the Wankel problem areas. Only snag is that ganging more rotors onto one shaft is complicated by the plumbing.
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  4. The petrol fuel run shows how the rotor acts even better that a “proper” piston. It’s a true four stroke so it’s clean but there’s a long blowdown period so it’s efficient.
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