Add Yahoo as a preferred source to see more of our stories on Google. Gasoline engines usually run on the Otto cycle, the standard four-stroke and two-stroke combustion process that has been powering ...

Most pickup truck fans probably know the new 2016 Toyota Tacoma will feature a new 3.5-liter V-6 engine, yet that isn’t the whole story. This new engine will use the “Atkinson” cycle, most notably ...

Toyota has a pair of new, efficient 2.0-liter engines on the way to market. The Japanese automaker calls them Dynamic Force Engines -- one is designated for conventional use, the other for hybrids -- ...

You might have heard about high compression ratios, but what exactly are they, and what kind of effect do they have on an engine's fuel efficiency?