Straight-12 engine

From Wikipedia, the free encyclopedia
Jump to: navigation, search
A 1905 Wolseley straight-12, 360 hp, petrol or oil marine engine

A straight-12 engine or inline-12 engine is a twelve-cylinder internal combustion engine with all twelve cylinders mounted in a straight line along the crankcase.

Land use[edit]

A straight-12 is a very long engine, and therefore straight-12 engines are extremely rare in automobiles, the first recorded being the Corona[1] made available in France in 1920. It displaced 7,238 cubic centimetres (441.7 cu in), but it is not known if any were sold. Packard also experimented with an automobile powered by an inline 12 in 1929.[2] The straight-12 has also been used for large military trucks.

Marine use[edit]

Some Russian firms built straight-12s for use in ships in the 1960s and 1970s. The Wärtsilä-Sulzer RTA96-C is offered in 12-cylinder configuration.


  1. ^ Burgess Wise, David (1979). The Illustrated Encyclopedia of Automobiles. New Burlington Books. p. 131. ISBN 0-906286-16-6. 
  2. ^