Liberty L-4

Liberty L-4
Liberty L-4 aircraft engine
Type	Piston aero engine
National origin	United States
Manufacturer	Hudson
Designed by	Jesse G. Vincent and Elbert J. Hall
First run	c.1917
Variants	Liberty L-6, Liberty L-8, Liberty L-12

The Liberty L-4 was a four-cylinder water-cooled inline aircraft engine developed in the United States during World War I. The Liberty L-4 was an experimental engine of 102 hp (76 kW), built by the Hudson Motor Car Company and intended primarily for use in training airplanes. Only two were produced, since other types of engines were available and already in production. It is unknown if the L-4 was ever test-flown.

This article incorporates text from http://www.nationalmuseum.af.mil/factsheets/factsheet.asp?id=835, a public domain work of the United States Government.

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