The Wankel rotary engine is one of the most unique and innovative engine designs ever created. Unlike the conventional piston ...

Unlike piston engines, Rotary engines don’t require valves to run. Here’s how rotary engines work and why some designs have incorporated valves.

The Wankel engine is the most famous rotary engine, but it isn't the only kind. ... His first rotary-piston engine was designed in 1954 and underwent testing in 1957.

Rotary Engine Evolution: From Its Nazi Inventor to How It Works. Part 1: The rotary engine’s origin story and how Mazda became synonymous with the unique design.

The Saab 99 Petro was available until 1984 in places before it was finally made illegal – so the dual-fuel engines were converted back – but you’re right, they did have to use the pistons ...

Rotary engines -- An article in Wednesday’s Highway 1 section about the Mazda rotary engine said the last generation of the Mazda RX-7 was produced from 1998 to 2002. Various versions of the car ...

The traditional Wankel is limited to 12:1, the liquid piston x-engine is not. That’s why they can run diesel, like in their XTS-210 compression ignition engine. Still, it’s not perfect.

The basic layout of the Achates engine has been around for some time. The German Luftwaffe started using similar Junkers Jumo opposed-piston diesels in large aircraft in 1932.

LiquidPiston's Hyper-Efficient Engine: Turning the Rotary Inside Out A new spin on the internal combustion engine by startup LiquidPiston aims for a leap in efficiency from 20 percent to 50 percent.

Rotary Piston Range Extender Remains Off-Limits To US Customers Mazda According to the official sales specifications of the Mazda MX-30 for the U.S. , the small electric SUV will continue to be ...