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In aviation, an inline engine is a reciprocating engine with banks of cylinders, one behind another, rather than rows of cylinders, with each bank having any number of cylinders, but rarely more than six. ==Inline engine configurations== ;Inline or Straight: Engines with a single bank of cylinders which can be arranged at any angle but typically upright or inverted, (e.g. upright ADC Cirrus, inverted de Havilland Gipsy Major). ;V:Engines with two banks of cylinders with less than 180° between them driving a common crankshaft, typically arranged upright or inverted (e.g. upright Liberty L-12, inverted Argus As 410).〔〔 ;O or Horizontally Opposed: Engines with two banks of cylinders arranged at 180° to each other driving a common crankshaft, almost universally mounted with banks horizontal for aircraft use, or with crankshaft vertical for helicopter use, (e.g. horizontally mounted Continental O-190, vertically mounted Franklin 6ACV-245). ;W:Engines with three banks driving a common crankshaft, arranged so that first and last banks are 180°or less apart, (e.g. upright Lorraine 12Eb, inverted Napier Lioness).〔〔 ;X: Multiple bank engines with four banks arranged around a common crankshaft, usually spaced evenly, (e.g. evenly spaced Rolls-Royce Vulture, unevenly spaced Napier Cub). ;Fan: Engines with more than three banks with 180° or less between first and last bank, akin to W engines. ''Note:'' Fan engines with single cylinder banks, typically from Anzani, are usually regarded as variants of the Radial engine. ;U:Engines with two banks of cylinders side by side driving separate crankshafts geared to a single output, (e.g. Bugatti U-16). ;H:Engines with four banks of cylinders driving two crankshafts geared to a single output, in effect, two Opposed engines coupled together and mounted either horizontally or vertically, (e.g. horizontally Napier Sabre, vertically Napier Dagger). ;Opposed piston:Two-stroke engines, typically compression ignition/Diesel, with a single bank of cylinders driving two crankshafts where the pistons travel towards each other forming single combustion chambers, (e.g. Jumo 207). :Deltic: Engines with three banks of opposed piston cylinders arranged in a triangle with three crankshafts geared to drive a single output,(e.g. Napier Deltic) :Rhomboidal: Engines with four or more banks of opposed piston cylinders arranged in a square with four crankshafts geared to drive a single output,(e.g. Jumo 223) ''Note:'' There is no theoretical limit to the number banks in an opposed piston engine, limitaions include cost, complexity and reliability. ;Multiple bank:Engines with more than two banks, arranged around a common axis and/or crankshaft with more than 180° between first and last banks. :Star: Multiple bank engines with an even number of banks (more than four) arranged around a common axis and/or driving a common crankshaft with more than 180° between first and last banks, (e.g. Jumo 222, Dobrynin VD-4K). :Inline Radial: Multiple bank engines, usually liquid-cooled, with an odd number of banks (three or more) arranged around a common axis and/or driving a common crankshaft with more than 180° between first and last banks, (e.g. air-cooled Armstrong Siddeley Deerhound, liquid-cooled BMW 803). ''Note'' The BMW 803 is not only an inline radial engine but is also a coupled engine with two engines arranged back to back on a common axis driving separate co-axial propellers through a common gearbox. 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「Inline engine (aeronautics)」の詳細全文を読む スポンサード リンク
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