A cross-head assembly of a piston heat engine, especially the Stirling engine.

摘要

1. The cross-head assembly of a piston heat engine, especially the Stirling engine, consists of a cross-head and a cylindrical guide. It is characterised in that the cross-head (2) is cylindrical in shape. There are scraper rings (5, 5a) and compression rings (6, 6a) mounted in the top and bottom parts of its skirt. Between the top (5) and bottom ring (5a), located at the internal side, there is at least one circumferential groove (8) in the cross-head skirt, which spreads oil. Below the bottom standstill point DMP, there are passage ducts (9, 10) in the guide wall (1). The first duct (9) is used to feed lubricating oil into the guide cylinder. The second duct (10) is used to take lubricating oil from the guide cylinder. The ducts are positioned to ensure, that their outlets are located between the internal top (5) and bottom (5a) rings, irrespective of the cross-head position. There are passage openings (11) in the cross-head crown.