The work done by a rotary engine doesn't need ... So, to answer the question, do rotary engines have valves? Yes, they do, ...

A rotary engine also isn’t very fuel efficient and scores poorly in emissions tests. Even with two plugs providing the spark for combustion, the shape and size of the combustion chamber does ...

The issue, as it has pretty much always been, is environmental. While the Wankel rotary engine does indeed make a lot of power in a small, lightweight package, it does so while burning lots of ...

The latest version adds a rotary engine to its compact predecessor, with prices ranging from 4.2 million yen ($28,000) to 4.9 million yen after tax. The MX-30 Rotary-EV will arrive on the Japanese ...