Editing Straight engine (section)

{{Short description|Cylinder layout for a piston engine}}
{{multiple image
 | align = right
 | direction = vertical
 | width = 250
 | image1 = Straight engine.svg
 | caption1 = Schematic drawing of a straight-four engine
 | image2 = AEG G.IV, Canada Aviation Museum, Ottawa.jpg
 | caption2 = [[Mercedes D.III]]s on a WW1 [[AEG G.IV]]
 | image3 = DHGipsyMajorengineDrover.JPG
 | caption3 = Inverted [[de Havilland Gipsy Major|Gipsy Major]] in a [[de Havilland Australia DHA-3 Drover|DHA-3 Drover]]
 | image4 = Indian 4 engine manifold side.jpg
 | caption4 = Straight-4 engine in an [[Indian Four]] motorcycle
 }}

The '''straight engine''' (also called '''inline engine''') is a configuration of multi-cylinder [[piston engine]] where all of the [[cylinder (engine)|cylinders]] are arranged in a single row, rather than radially or in two or more cylinder banks.