The phrase "Atkinson cycle" is as synonymous with hybrids as the words "Toyota" and "Prius". But what does that even mean and why do hybrids use them?

This inside-out design solves most of the rotary engine’s problems LiquidPiston's designs will show up first in UAVs and generators.

The 2024 Toyota Prius Prime is only available with one drivetrain configuration, consisting of an Atkinson-cycle, naturally aspirated 2.0-liter four-cylinder engine connected to a pair of electric ...