The Liberty L-4B was an experimental

water-cooled Cooling tower and water discharge of a nuclear power plant Water cooling is a method of heat removal from components and industrial equipment. Evaporative cooling using water is often more efficient than air cooling. Water is inexpensive and no ...

inline

four-cylinder The engine configuration describes the fundamental operating principles by which internal combustion engines are categorized. Piston engines are often categorized by their cylinder layout, valves and camshafts. Wankel engines are often categoriz ...

aircraft engine An aircraft engine, often referred to as an aero engine, is the power component of an aircraft propulsion system. Aircraft using power components are referred to as powered flight. Most aircraft engines are either piston engines or gas turbin ...

developed in the United States during

World War I World War I or the First World War (28 July 1914 – 11 November 1918), also known as the Great War, was a World war, global conflict between two coalitions: the Allies of World War I, Allies (or Entente) and the Central Powers. Fighting to ...

. The engine was designed and manufactured by the

Hudson Motor Car Company The Hudson Motor Car Company made Hudson and other branded automobiles in Detroit, Michigan, U.S., from 1909 until 1954. In 1954, Hudson merged with Nash-Kelvinator to form American Motors Corporation (AMC). The Hudson name was continued through ...

and was mainly intended for use in training airplanes. Only two examples of the L-4B were produced, since other types of engines were available and in production. While the engine was ground-tested, it is unknown if the L-4 was ever test-flown. The L-4 was created as part of a US aircraft engine development effort which also created the six-cylinder

Liberty L-6 The Liberty L-6 was a six-cylinder water cooling, water-cooled Inline engine (aviation), inline aircraft engine developed in the United States during World War I. Design and development The Liberty L-6, which developed 200–215 hp, was b ...

, eight-cylinder Liberty L-8 and twelve-cylinder

Liberty L-12 The Liberty L-12 is an American Water_cooling#Internal_combustion_engines, water-cooled 45° V12 engine, V-12 engine, displacing and making , designed for a high power-to-weight ratio and ease of mass production. It was designed principally as ...

Specifications

References

This article incorporates text from Liberty L-4
/span>, a public domain work of the United States Government. * {{Aeroengine-specs 1910s aircraft piston engines Abandoned military aircraft engine projects of the United States Hudson Motor Car Company

Specifications

See also

References