Aerospace Engines A to Z
Aerospace Engines A to Z

Updated: 17-Feb-2020

Achates Power makes an engine based on opposed-piston principles with a central chamber inside the cylinder between the two pistons.

Achates Power, Patent drawing
"Patent drawing"

-The patent, presented in USA and Russia, differs from ordinary engines of this type (Jumo) in a way that the crankshafts are on both sides of the cylinder and a connecting rods attached to the pistons make them rotate.

Achates Power, Engine with pistons in different positions
"With the pistons in different positions"

-It works with the two-stroke system, and is proposed for several vehicles, aircraft included.

Achates Power para various vehículos

-At each end of the cylinder there is a port, on one side the intake and on the other the exhaust.

Achates Power, Patent drawings. Expandable modular motor
"Patent Drawings - Expandable Modular Engine"

Aspecto mas real del motor Achates
"Aspecto mas real del Achates"

Some more information about this engine by "Achates", pronounced "Akates".

Achates mechanism
"Achates mechanism"

-And also a photo of the first practical realization of this engine.

Motor Achates completado
"Completed Achates engine"

The end result:

Motor Achates con pistones opuestos.
"Achates two-stroke, opposed-piston engine"

Engines of ACHATES POWER

Model: Motor pistones opuestos

Arquitecture: 3-cylinder Opposed piston engine
Cooling:
Total Displacement:
Bore / Stroke:
Power: @ rpm
Weight:

Other details:
Achates opposed-piston engine

"Achates opposed-piston engine"