An alpha Stirling contains two power pistons in separate cylinders, one hot and one cold.
In this version, the combustion chamber was removed to a separate cylinder placed to the side of the power cylinder.
The uncorrected volume is the sum of volumes of these separate cylinders.
Such a machine may be constructed by mechanically connecting two pistons, each working in a separate cylinder of a different diameter.
The Rider style engine is an "alpha" engine which uses two separate cylinders.
Overflow records held on a separate cylinder will require a head movement to the overflow cylinder.
Most radials are air-cooled with separate cylinders and so there are no banks as such.
It had no crankshaft and the pistons were returned after each power stroke by compression and expansion of air in a separate cylinder.
They often carry a separate cylinder for this purpose; generally it contains air, although sometimes argon, which has lower thermal conductivity, is used.
Four separate cylinders inline powered the model "E" (1770cc).