1860 - Jean Etienne Lenoir - Commercializing the two-stroke engine
The early 19th century saw several different designs of the internal combustion engine (including that of de Rivaz, who also built a car based on his engine). However none of these early designs showed any degree of commercial success.
The first successful internal combustion engine was a two-stroke gas driven engine patented by Jean Joseph Etienne Lenoir of Belgium in 1860. In 1862 he built an experimental vehicle driven by his gas-engine, which managed to achieve a speed of 3 kms/hour. By 1865 around 500 of these engines were in use in Paris alone.
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