A Gamma type Stirling engine uses a displacer like a Beta Stirling but the power piston is mounted in a separate cylinder alongside the displacer piston cylinder. They are connected to the same flywheel. The gas in the two cylinders can flow freely between them and remains a single body. During the expansion process some of the expansion must take place in the compression space leading to a reduction of specific power.The gamma engine is mechanically simpler and often used in multi-cylinder Stirling engines. This configuration produces a lower compression ratio.

Do you like this article? Share It!