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The Doble steam Car was an American steam car maker from 1909-1931. Their latter models of steam car, with fast firing boiler and electric start, were considered the pinnacle of steam car development. The term "Doble steam car" comprises any of several makes of steam-powered automobile in the early 20th century, including Doble Detroit, Doble Steam Car, and Doble Automobile, severally called a "Doble" because of their founding or association with Abner Doble.〔Fox Stephen (1998). ''The Strange Triumph of Abner Doble'', Invention & Technology Magazine, Volume 14; Issue 1.〕 ==History== There were four Doble brothers: Abner, William, John, and Warren. Their father became wealthy, patenting the Doble Pelton wheel. All were at one time associated with the automobile company, with Abner, John, and Warren as the leading lights. Abner Doble built his first steam car between 1906 and 1909 while still in high school, with the assistance of his brothers. It was based on components salvaged from a wrecked White Motor Company steamer, driving a new engine of the Doble brothers' own design. It did not run particularly well, but it inspired the brothers to build two more prototypes in the following years. Abner moved to Massachusetts in 1910 to attend MIT, but dropped out after just one semester to work with his brothers on their steam cars. Their third prototype, the Model B, led Abner to file patents for the innovations incorporated in it which included a steam condenser which enabled the water supply to last for as much as , instead of the typical steam car's . The Model B also protected the interior of the boiler from the common steam vehicle nuisances of corrosion and scale by mixing engine oil with feedwater. While the Model B did not possess the convenience of an internal combustion engined vehicle, it attracted the attention of contemporary automobile trade magazines with the improvements it displayed over previous steam cars. Apart from its slow starting time, the Model B was virtually silent compared to contemporary gasoline engines. It also possessed no clutch or transmission, which were superfluous due to the substantial torque produced by steam engines from 0 rpm. Most noticeably, the Model B could accelerate from in just 15 seconds , whereas a Ford Model T of the period took 40 seconds to reach its top speed of . 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「Doble steam car」の詳細全文を読む スポンサード リンク
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