Stephan Löffler

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Stephan Löffler (born November 12, 1877 in Steinau (Silesia), † October 22, 1929 in Berlin ) was a German mechanical engineer , designer and university professor.

Life

Loeffler graduated in 1900 studying mechanical engineering at the Federal Institute of Technology in Zurich , then was there an assistant at Aurel Stodola and received his doctorate in 1901 at the University of Zurich Dr. phil. From 1901 to 1903 he worked as an assistant with Otto Kammerer at the Technical University in Charlottenburg . From 1903 he spent five years of practical work as chief designer for gas and hoisting machines at the Witkowitz ironworks and as chief engineer at the Ansaldo shipyard in Genoa .

In 1908 he returned to the TH Charlottenburg as assistant to Alois Riedler . Here he built the first research institute for motor vehicles in 1909, combined with a roller dynamometer for motor vehicles, on the theory of which he published his habilitation thesis in 1912 . In 1914 he participated in the construction of a test facility for the production of gasoline from heavy fuel oils and coal (after F. Bergius).

In 1918 he was appointed titular professor and in 1919 honorary professor for rotating machines and oil machines at the TH Charlottenburg. In particular, he now dealt with high-pressure steam generation and in 1923 developed a method of steam generation using the circulation process, which was reflected in the invention of the Löffler high-pressure boiler and the Löffler high-pressure locomotive. The latter was built in one copy as DR H 02 1001 and extensively tested on the Deutsche Reichsbahn between 1929 and 1934 , but was not included in the regular stock due to technical problems that could not be managed over the long term.

He was married to Jenny von Böhmer.

Stephan Löffler died in Berlin in 1929 at the age of 51 and was buried in the Old St. Matthew Cemetery in Berlin-Schöneberg . In the course of the leveling of the cemetery carried out by the National Socialists in 1938/1939, Löffler's remains were reburied in the south-west cemetery in Stahnsdorf near Berlin.

Fonts

  • About the influence of magnetization on the torsional elasticity of iron. Dissertation. Zurich 1901.
  • Mechanical engines and brakes. Habilitation thesis. Berlin 1912.
  • with Alois Riedler: Oil machines. Scientific and practical basics for the construction and operation of internal combustion engines. Berlin 1916.
  • Theory and reality for engines and brakes. Munich 1919.
  • with Alois Riedler: Friction engines and their misinterpretation by theorists. Munich 1921.
  • The Age of High Pressure Steam. Berlin 1928.
  • Modern problems of high pressure steam technology. In: E. Honegger: Festschrift A. Stodola for the 70th birthday. 1929, pp. 372-380.

literature

Web links

Individual evidence

  1. ^ Hans-Jürgen Mende: Lexicon of Berlin tombs . Haude & Spener, Berlin 2006. pp. 305, 473.
personal data
SURNAME Löffler, Stephan
BRIEF DESCRIPTION German mechanical engineer and university professor
DATE OF BIRTH November 12, 1877
PLACE OF BIRTH Steinau (Silesia)
DATE OF DEATH October 22, 1929
Place of death Berlin