There are three fathers of invention when it comes to nearly every car on the road today: Otto, Diesel, and Atkinson. They all had one thing in common—a drive to improve the efficiency of the engines ...

We may receive a commission on purchases made from links. Developed and patented by Rudolf Diesel, the diesel engine was designed to offer higher efficiency than the widely-used Otto gas engine, using ...

The four-stroke Otto cycle engine is the reigning king of internal combustion (in the diesel-averse United States, at least), which makes it easy to forget about all those other wacky would-be ...