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__NOTOC__ The Green Engine Co was a British engine company founded by Gustavus Green in Bexhill to sell engines of his design. He flourished especially as a designer of aeroplane engines during the first two decades of the 20th century. The engines were actually manufactured by the Aster Engineering Company. ==History== The firm produced a range of water-cooled, mostly inline engines up to about 1915. Green's engines powered many pioneering British aircraft, including those of Alliott Verdon Roe (Avro founder), Samuel Cody and the Short Brothers. They had several advanced features in common; cast steel single-piece cylinders and cylinder heads, two valves per cylinder driven by an overhead camshaft, white metal crankshaft bearings and copper and rubber-sealed water jackets.〔 Manufacture was at the Aster Engineering Company of Wembley. (Mention in H Penrose book The Pioneer Years says there was a factory in Twickenham)? When the Great War of 1914–18 broke out in Europe the company was known for its motorcycle engines and particularly associated with "pannier honeycomb" radiator design〔Anon, ''The Motorcycle'', no. 695, Volume 13, 29 October 1914, page 482〕 but was already involved in aero-engine design. In 1909 the Green C.4 had been the only motor to complete the tests for the Patrick Alexander Competition but was not awarded the prize of £1,000, rather controversially, because the rules called for a 35 horsepower engine while the C.4 only averaged 31.5 horsepower.〔...results of the Alexander Competition, ''Flight'' 14 January 1911〕 The competition was re-run the following year for more powerful engines: this time Green's gained the prize with the D.4.〔Olympia show preview 1913 ''Flight'' 8 February 1913〕 Up to 1912 Green's were the only source of all-British aircraft engines capable of producing 60 h.p., and so the only choice when prizes were offered for all-British aircraft. The best known case is Moore-Brabazon's winning the £1,000 ''Daily Mail'' prize for a circular 1-mile flight by a British pilot in an all-British aeroplane in his Green D.4 powered Short Biplane No. 2 in 1910.〔 In 1914 the company was awarded a £5,000 prize by the Army Council in a Naval and Military Aeroplane Engine Competition for their Green 100-h.p. water-cooled six-cylinder "Engine No. 1", which was judged to possess the highest number of attributes desirable in an aeroplane engine.〔〔(''Flight'' 23 October 1914 p.1062 states that the prize was awarded to the 120 h.p. engine, a refinement of the 100 h.p. model, unlike "The Motorcyclist" )〕 It was designed to deliver maximum power at low speed and weighed 442 lb. Green's continued to design motorcycle engines too, using cylinders similar to, though smaller than, those on their prize-winning aero-engine, having similar rubber-sealed copper jackets and removable overhead valve mechanisms designed to protect the cylinders from damage by broken valves, and forced lubrication throughout.〔 In 1914, Motor Cycle magazine reported〔"An 8 h.p. Twin-cylinder Zenith-Green",Motor Cycle, 20 August 1914, p248〕 on a Zenith motorcycle supplied with the 'new' 964cc (8HP) V-twin Green engine, of 85mm bore and stroke. One interesting detail seen on many modern motorcycles was 'the fitting of a glass window in the crank case to show the level of the oil'. 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「Green Engine Co」の詳細全文を読む スポンサード リンク
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