Alphonse Eugène Beau de Rochas | |
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Alphonse Beau de Rochas
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Born |
Digne-les-Bains, Alpes-de-Haute-Provence |
9 April 1815
Died | 27 March 1893 | (aged 77)
Nationality | French |
Occupation | Engineer |
Known for | Four-stroke internal-combustion engine |
Alphonse Eugène Beau de Rochas (9 April 1815, Digne-les-Bains, Alpes-de-Haute-Provence – 27 March 1893) was a French engineer who originated the principle of the four-stroke internal-combustion engine. His achievement lay partly in his emphasizing the previously unappreciated importance of compressing the fuel–air mixture before ignition. He published his results in 1861, a year after Christian Reithmann was granted a patent in Germany and 16 years before Nicolaus Otto obtained his patent.