The first stationary gasoline engine developed by Carl
Benz was a one-cylinder two-stroke unit which ran for the
first time on New Year’s Eve 1879. Benz had so much
commercial success with this engine that he was able to
devote more time to his dream of creating a lightweight
car powered by a gasoline engine, in which the chassis
and engine formed a single unit.
The major features of the two-seater vehicle, which was
completed in 1885, were the compact high-speed single-
cylinder four-stroke engine installed horizontally at the
rear, the tubular steel frame, the differential and three
wire-spoked wheels. The engine output was 0.75 hp (0.55
kW). Details included an automatic intake slide, a
controlled exhaust valve, high-voltage electrical vibrator
ignition with spark plug, and water/thermo siphon
evaporation cooling.


https://www.youtube.com/watch?v=RxYWi4d6IPY

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