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.
| 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 |
Specifications
edit
General characteristics
- Type: Four-cylinder inline piston engine
- Bore: 5 in. (127mm)
- Stroke: 7 in. (177.8mm)
- Displacement: 549.8 cuin (9.0 L)
Components
- Cooling system: Water-cooled
Performance
- Power output: 102 hp (76 kW)
See also
editRelated lists
References
edit- ^ 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.
This article incorporates text from Liberty L-4, a public domain work of the United States Government.
- Gunston, Bill (1986). World Encyclopedia of Aero Engines. Wellingborough: Patrick Stephens. p. 106.
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