OTTO-LANGEN

ATMOSPHERIC ENGINE

Part two by Julius de Waal

In 1864 Otto and Eugen Langen set up the first internal combustion engine making company N A Otto & Cie and succeeded in creating a successful atmospheric engine that same year. The factory ran out of space and was moved to the town of Deutz, Germany in 1869 where the company was renamed to Gasmotoren-Fabrik Deutz. Gottlieb Daimler was technical director and Wilhelm Maybach was the head of engine design.

First version of the atmospheric engine had a fluted column design by Eugen Langen. The engine has its power stroke delivered upward using a rack and pinion to convert the piston's linear motion to rotary motion.

The engine ran at 12% efficiency and produced .5 hp at 80 RPM. It won the Gold Medal, at the 1867 World's Fair in Paris, paving the way for production and sales that funded additional research.

Notwithstanding its commercial success, the company produced 634 engines a year by 1875, the Otto and Langen engine was at a technical dead end. It produced only 3 hp, yet required 10–13 ft  headroom.

In 1882, after producing 2,649 engines, atmospheric engine production was discontinued. This was also the year that Gottlieb Daimler and Wilhelm Maybach left the company.

The engine makes a fascinating and most attractive model. A design by Emmett Lenaz in the US, and later research by Wayne Greening. set the ball rolling. MEWS showed drawings found on the internet to Julius, who took a break from his steam engine design work to produce metric drawings of the Otto-Langen. Anyone who is interested in building in imperial measurements can find drawings on the internet (which may need some revision), together with some building notes which we shall also include on MEWS (see below).

Click on drawings to download - for personal use only.

Part one here.

https://www.sarikhobbies.com/model-engineer-builder/

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