It would take the likes of Nikolaus August Otto in Germany to make the first practical four-stroke engine, in 1876. His name is immortalized in the Otto cycle, which is used today in engines. In 1881, ...

Today, the fundamental concept of an Otto-cycle engine (named for its creator) is no different than in past decades -- we just have better parts to play with.

The Atkinson is a four-stroke internal combustion engine much like the Otto cycle, but there’s a big difference: the intake valve stays open during the first part of the compression stroke.

The engine build has taken approximately 3,125 person days, which totals to 25,000-man hours. The engine weighs over 2,100 tons and has received parts from more than 15 countries. About the 12X92DF ...

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 ...

Pay attention as we explain how exactly four cylinder car engines work. We go over all the basic component and how they work together such as the block, crankshaft, pistons, rods, etc. Then we ...

Ahhhhhh yesssssss the Otto cycle. Commonly reffered to as suck, squeeze, bang, blow! In the late 70’s my dad and older brother spent many an evening assembling a “visible v-8” engine.

The Otto cycle four-stroke engine has pretty much been the standard for 132 years, but the five-stroke engine might be a great stopgap between current technology and the Next Big Thing.