| Liberty L-4 | |
|---|---|
| |
| Liberty L-4 aircraft engine | |
| Type | Piston aero engine |
| National origin | United States |
| Manufacturer | Hudson Motor Car Company |
| Designer | Jesse G. Vincent and Elbert J. Hall |
| First run | 1917 |
| Number built | 2 |
| Variants | Liberty L-6, Liberty L-8, Liberty L-12 |
The Liberty L-4B was an experimental water-cooled inline four-cylinder aircraft engine developed in the United States during World War I.[1] The 102 hp (76 kW) engine was designed and manufactured by the Hudson Motor Car Company and was mainly intended for use in training airplanes.[2] 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, eight-cylinder Liberty L-8 and twelve-cylinder Liberty L-12.
- ^ Neal, Robert J. (2009-01-05). Liberty Engine: A Technical & Operational History. Specialty Press. ISBN 978-1-58007-149-9.
- ^ "Liberty L-4". National Museum of the United States Air Force™. Retrieved 2023-07-26.