The Siemens‐Halske S.H.20 Engine: General Description with Power and Consumption Curves Including Report of Official Type Tests

THE Siemens SH.20, which can be supplied with or without reduction gear, has a total swept volume of 31·5 litres and a power output of 500–560 h.p., and is one of the largest and most powerful air‐cooled engines in the world.