Editing Atkinson cycle (section)

==Rotary Atkinson-cycle engine==
[[File:WikiDartEngine.gif|thumb|right|Rotary Atkinson-cycle engine]]

The Atkinson cycle can be used in a [[pistonless rotary engine|rotary engine]]. In this configuration, an increase in both power and efficiency can be achieved when compared to the Otto cycle. This type of engine retains the one power phase per revolution, together with the different compression and expansion volumes of the original Atkinson cycle.

Exhaust gases are expelled from the engine by compressed-air scavenging. This modification of the Atkinson cycle allows the use of alternative fuels such as diesel and hydrogen. 

Disadvantages of this design include the requirement that rotor tips seal very tightly on the outer housing wall and the mechanical losses suffered through friction between rapidly oscillating parts of irregular shape. See [[#External_links|external links]] below for more information.

The [[Sachs Motorcycles|Sachs]] KC-27 Wankel engine in the [[Hercules W-2000]] motorcycle used the Atkinson cycle. A depression capsule opens a secondary path for the incoming charge.{{cn|date=June 2021}}

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