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Alphonse Beau de Rochas 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.
- The Editors of Encyclopaedia Britannica
Alphonse Eugène Beau de Rochas (9 April 1815, Digne-les-Bains, Alpes-de-Haute-Provence – 27 March 1893, Vincennes) was a French engineer. He was the first to patent the four-stroke engine in 1862, but he did not build one and the idea was subsequently developed by Nicolaus Otto and other engineers. [1]
Alphonse Eugène Beau, dit Beau de Rochas, né le 9 avril 1815 à Digne et mort le 27 mars 1893 à Vincennes, est un ingénieur français, lauréat de l'institut (Académie des Sciences). Ingénieur de grands travaux, il pose le premier câble télégraphique sous-marin en collaboration avec l'ingénieur Philippe Breton (1851).
Le lycée Beau de Rochas est un établissement de formation professionnelle dans le domaine de l'automobile à Bordeaux. Il propose des formations du CAP au BTS, ainsi que des formations continues, et participe à des compétitions régionales et nationales.
Jun 18, 2018 · Otto's patent was overturned in 1886 in favor of the patent granted to Alphonse Beau de Roaches for his four-stroke engine. However, Otto built a working engine while Roaches' design stayed on paper. On October 23, 1877, another patent for a gas motor engine was issued to Nicolaus Otto, and Francis and William Crossley.
- Mary Bellis
Alphonse Eugène Beau, später Alphonse Beau de Rochas war ein französischer Eisenbahningenieur und Erfinder. Er gilt als der Erfinder des Prinzips des Vier-Takt-Verbrennungsmotors und hatte zu dessen Optimierung als erster u. a. die Verdichtung des Treibstoff-Luft-Gemisches angeregt.
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May 9, 2019 · Even before Otto’s invention of the four-stroke engine in 1860. Christian Reithmann and Alphonse Beau de Rochas had received patents on the four-stroke engine independently of each other in 1862, which later led to legal proceedings.
