(See Ljungströms Angturbin).

In 1934 they entered documentation of a Diesel Ljunström in the the USNA with ref. 3251 / 452.8.

From Appendix A3/6: Around 1900 the Swedish Ljungström made rotary-type steam-powered engines but with internal pistons rotating around a centered axis, unlike the Coomber, Ruth or Almond engines that have the axis offset from the center..

“Coomber twin-cylinder from 1876”

“Drawings from Ruth and Almond”

-In these last two, the cylinders are rotatable on an eccentric axis and the pistons and their wheels protruding, supporting their rotation on the outer wall, thus causing displacement. This principle would be used in the Kipp engine, but not in the Ljungström.

“Kipp engine”

-Finally we reached the Ljungström engine calculated to give 15 CV, running on steam.

“The Ljunström from 1900”

-We have the outer body A, the four-cylinder rotor in B and the elliptical track is E.

"Real Engine Appearance"

“Cross-section for the engine above”

-In the Durham College of Sciences in Newcastle there is an engine of this type with which demonstrations are carried out and also a smaller one of only 2 CV.

“Both 2 CV and 16 CV engines”

-Se inserta aquí éste motor porque son los principios de éste constructor que en el texto principal de ésta publicación lo exponemos como diseñador de motores aeronáuticos.

-This engine is inserted here because the principles of this engine constructor that in the main text of this publication we expose as a designer of aeronautical engines.