Straight engine
Straight / Inline engine
- Upper left: Mercedes D.IIIs on a WW1 AEG G.IV
- Upper right: Inverted straight engine in a Klemm Kl 35
- Lower left: Schematic gif of a straight-8 engine
- Lower right: Inverted Gipsy Major in a DHA-3 Drover
A straight engine, or inline engine, is a configuration of multi-cylinder piston engine where all of the cylinders are arranged in a single row, rather than radially or in two or more cylinder banks.