When considering rotary engines, the Wankel engine often comes to mind due to its high power-to-weight ratio, though it suffers from drawbacks in fuel economy, emissions, and durability. In contrast, ...

When it comes to remaining as one of the top dogs in the automotive world, the biggest manufacturers have to work hard todiversify their mechanical know-how.Audi provided a good example of this in ...

Matt Nelson is an automotive journalist with nearly a decade of experience in all things cars. He's spent years working at dealerships in sales, finance, and service. He's since traded in his pens and ...

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Rotary engines are compact, smooth, and powerful, so why don't more automakers use them? Well, it's complicated.

Ask most people what a rotary engine is, and they'll describe a Mazda RX-7 with a triangular rotor spinning inside a housing, combustion happening in sequence as the rotor moves rather than across a ...

In theory, Wankel-style rotary internal combustion engines have many advantages: they ditch the cumbersome crankcase and piston design, replacing it with a simple, single-chamber design and a thick, ...

A Wankel engine is a type of rotary engine, but not all rotary engines are Wankel engines. Wrapping your mind around this idea will help you to better understand the similarities as well as the ...

Astron aerospace has shown a partial prototype of a new rotary combustion engine it claims runs at an extraordinary 60% thermal efficiency, burning totally clean with zero NOx emissions and nothing ...

Rotary might be a good name for this sort of engine, if the name wasn't already taken. Everything inside the crankcase rotates, but unlike a Wankel-style rotary engine, this design uses a piston with ...

The piston engine may be the most common type of internal combustion engine found in consumer automotive vehicles. That doesn't mean it's the only option drivers have ever had access to. In the 1960s, ...

In a world dominated by pistons, the rotary engine was something different for motorists. It was the vision of German engineer Felix Wankel, built on the belief that the up-and-down motion of pistons ...