What was the technical design of the initial successful product released by N.A. Otto & Cie.?

Answer

Free-piston atmospheric engine

The initial product, the Otto–Langen engine, was a free-piston atmospheric engine that operated by using an explosion to create a vacuum, relying on atmospheric pressure to drive the power stroke.

What was the technical design of the initial successful product released by N.A. Otto & Cie.?

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Running Model of Very First Otto Langen. 1876 internal combustion ...

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