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The Hornsby-Akroyd oil engine was the first successful design of internal combustion engine using "heavy oil" as a fuel. It was the first to use a separate vapourising combustion chamber and is the forerunner of all hot-bulb engines. Early internal combustion engines were quite successful running on gaseous and light petroleum fuels. However, due to the dangerous nature of gasoline and light petroleum fuel, legal restrictions were placed on their transportation and storage. Heavier petroleum fuels, such as kerosene, were quite prevalent, as they were used for lighting. However, heavier oils posed specific problems when used in internal combustion engines. Oil used for engine fuel must be turned to a vapour state and remain in that state during compression. Furthermore, the combustion of the fuel must be powerful, regular, and complete, to avoid deposits that will clog the valves and working parts of the engine. ==Early oil engines== The earliest mention of an oil engine was by Robert Street, in his English patent no. 1983 of 1794.〔http://www.eng.cam.ac.uk/DesignOffice/projects/cecil/history.html〕 The earliest working engine was built by Julius Hock, of Vienna, in 1870.〔http://www.1911encyclopedia.org/Oil_Engine〕 Hock's was a non-compression engine, not unlike that of Étienne Lenoir. Others made refinements to the oil engine; William Dent Priestman,〔http://www.ingenious.org.uk/See/?s=S1&ObjectID=&source=Search&target=SeeMedium〕 George Brayton and Emile Capitaine 〔http://www.gasenginemagazine.com/gas-engines/oil-engines-excerpted-from-gas-and-oil-engines.aspx〕 are some of the more notable. However, it was Herbert Akroyd Stuart's design that was the most successful. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Hornsby-Akroyd oil engine」の詳細全文を読む スポンサード リンク
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