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Split-single engine

Split-single engine used by the DBS Valveless car from 1908 to 1915. The first picture shows the moment of firing.

In internal combustion engines, a split-single design is a type of two-stroke where two cylinders share a single combustion chamber.

The first production split-single engine was built in 1918 and the design was used on several motorcycles and cars until the mid-1950s, although Puch continued producing split-single engines for motorcycles until 1970. During this time, the design was occasionally used for engines with four or more cylinders.


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