Complex sentence: Engines of this number of cylinders are not common, but this configuration was used in some large diesel engines, such as the 1960s vintage General Motors Electro-Motive Division EMD SD45, railroad locomotive, which was fitted with a 20-cylinder EMD 645E3 engine.
Split into simpler sentences: Engines of this number of cylinders are not common, but this configuration was used in some large diesel engines. For example the 1960s vintage General Motors Electro-Motive Division EMD SD45 railroad locomotive was fitted with a 20-cylinder EMD 645E3 engine.