Some engine designs fade into the background, quietly doing their job until regulations or fashion move on. Others keep ...

Two-stroke engines have steadily fallen out of favor over the last 50 years or so. While they sport great power-to-weight ratios and are often much simpler mechanically than their four-stroke ...

For more than a century, one basic layout has quietly powered everything from family sedans to fighter trainers and lawn ...

A.Here's a pressure-volume diagram for a combustion engine. Although rough, it is an approximation of the so-called air-standard cycle. '' Point (a) is at atmospheric pressure, after which the air is ...