Quadruple expansion steam-engines

Quadruple expansion steam engines


The steam expands in four steps from the boiler pressure to the exhaust pressure using one high-pressure cylinder, two different size intermediate-pressure cylinder and one low-pressure cylinder. The cranks on the cranshaft are shifted 90°
Quadruple steam-engine

Quadruple engine steam compressor
The Swedish steamship Soya Lovisa was equipped with a quadruple steam-engine with an exhaust-steam-turbine that drove a steam compressor between first and second intermediate pressure cylinders.

The steamship Inchmona owned by Hamilton Fraser & steamships Company had a five-cylinders quadruple-expansion steam-engine; one high pressure-cylinder two different sized intermediate-pressure-cylinders and two equal sized low pressure cylinders.