The mind-bending world of birotary engines - a hybrid of piston and rotary technology that could revolutionize aviation. But ...

Everyone generally knows about piston and rotary engines, with many a flamewar having been waged over the pros and cons of each design. The “correct” answer is thus to combine both into a single ...

There’s a new spin on the rotary engine. Liquid Piston, a Connecticut-based engineering firm, has turned the classic Wankel engine design inside out to create a more efficient, and cleaner-burning ...

You'd think measuring an engine's displacement would be simple, but there's a long history of trying to figure out how to ...

A normal Wankel has a triangle rotor spinning in a peanut-shaped housing. Liquid Piston flips that; now the peanut rotor spins inside a triangle housing. That small change makes a big difference. The ...

Liquid Piston has taken its revolutionary engine out for a spin. The Connecticut-based startup has been developing a tiny new type of rotary engine for several years that’s so innovative it received a ...

Most of the internal combustion piston engines built for vehicles throughout history have pretty familiar core designs. The ...

Mazda stunned the world with the RX-Vision concept last year and now we have the first details on its new rotary engine. Currently under development, Mazda’s next-generation rotary engine has been the ...

Longtime friend of Jalopnik and myself, Tom Jennings, is a huge Rambler fan and walking, moist column of Rambler-knowledge, so when he encounters something Rambler-related he wasn't aware of, you know ...

According to the official sales specifications of the Mazda MX-30 for the U.S., the small electric SUV will continue to be offered only with an all-electric powertrain. This means that the North ...

The new and improved always prevails over the old and stale, doesn’t it? Surely the ancient contraption called an internal combustion reciprocating piston engine – a design that is approaching its 150 ...

Every few weeks I receive word at the office that some tinkering genius has revolutionized the internal-combustion engine. These notices arrive on pages still smelling of Damascus lightning, and ...