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 ...

Air compressors are some of the most crucial tools in a construction or rental business. These machines power a vast range of other tools, from nailers to pneumatic wrenches to paint and air sprayers.

Now, micro-turbine range extenders like those in Jaguar's C-X75and Mitsubishi's MI-Techconcepts are beginning to hit the road. What's more, there's a new patent-pending rotary-engine concept that ...