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jimmydasaint

Why Use a Wankel Engine?

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Yes, at least in principle- because the "piston" doesn't have to keep stopping and starting again.

Don't think it's quite as simple as that. Ignoring the compressive and power stroke forces, the energy to accelerate a piston is returned by the piston when it pulls on the crankshaft when being decelerated.

 

There'll be losses through friction and the like, but it's not like (say) you or I trying to oscillate a piston up and down in our hand.

 

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From first principles, the Wankel should be more efficient because of two factors:

1. Lower mass than reciprocating engines

2. Less loss of kinetic energy from frequent changes in piston direction.

This is a gross simplification, and a lot of other factors including leakage make it less efficient, but I still hope engineers will get past these limitations.

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