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Daimler Straight-Eight engines were eight-cylinder in-line petrol engines made by the Daimler Company to power the largest and most expensive cars in their range. The Straight-Eight engines replaced Daimler's earlier Double-Six V12 engines. Unlike the Double-Six engines, which used sleeve valves based on the Knight patents, the Straight-Eights used conventional poppet valves in the overhead valve configuration. Three series of Straight-Eight engines were built between 1934 and the outbreak of the Second World War in 1939; another series, the DE36, was built after the war from 1946 to 1953. ==Origin== The Straight-Eight engine was announced by The Daimler Company Limited on 1 May 1934 with its first vehicle, Daimler's new Twenty-Five saloon and limousine. The new engine was the first of a series intended to replace Daimler's outmoded large sleeve-valve six-cylinder and twelve-cylinder engines. The sleeve-valve engines with silence and great low-speed torque were unable to spin fast enough to make full use of new combustion technology and remain reliable.〔New Eight-Cylinder Daimler.''The Times'', Thursday, May 17, 1934; pg. 13; Issue 46756〕 These new engines were intended to run comfortably at 4,000 rpm. The general aim with the engine was "to give the greatest luxury in travel as expressed by quietness, smoothness, flexibility, and general ease and safety of control rather than great speed".〔 While a great deal of useful experience had been acquired by Daimler from Lanchester, who were still building their overhead camshaft straight-eight when they were purchased in 1931, the Daimler Straight-Eight is not a copy. 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「Daimler Straight-Eight engines」の詳細全文を読む スポンサード リンク
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