Sunbeam Pathan

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Sunbeam Pathan
Type6-cyl. In-line, water-cooled, diesel, piston engine. [1]
Manufacturer Sunbeam [1]
Designer Louis Coatalen [1]
First run1929 [1]
Number builtprototypes only [1]
Developed from Sunbeam Dyak [1]

The Sunbeam Pathan, also known as the Sunbeam P.1, was a 1920s British diesel aero engine. [1] [2]

Contents

Design and development

Louis Coatalen, Sunbeam engine designer, started work on a diesel powered aero-engine, that would be suitable for use in airships, in 1928. [2] Using his experience with both aero-engines and auto-mobile diesel engines, the result, given the company designation P.1, was based on the Dyak. [2] Given the name Pathan, a prototype engine was displayed at the 1929 Olympia Aero Show, but attracted no orders. [2]

Using the same bore and stroke of the Dyak (120mm x 130mm - 4.72in x 5.12in ), the Pathan was a water-cooled six-cylinder in-line diesel engine with a cubic capacity of 8.8l (537cu in). Rated to give 100 hp (74.6 kW) @ 1,500rpm the engine was fitted with a new type of fuel injection system allowing cold starts without other assistance. [1]

The engine did not enter production as the British Airship Programme was cancelled, and with no need for the engine only prototypes were built. [1] [2]

Coatalen continued the development of Diesel engines after he left Sunbeam and returned to France, developing the Coatalen V-12 Diesel engine with limited success, due to the German invasion of 1940 halting further work. [1]

Specifications

Data from [1]

General characteristics

Components

Performance

See also

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References

  1. 1 2 3 4 5 6 7 8 9 10 11 Brew, Alec (1998). Sunbeam Aero-engines. Shrewsbury: Airlife Publishing. ISBN   1-84037-023-8.
  2. 1 2 3 4 5 "Sunbeam Overhead Cam Engines". Archived from the original on 1 June 2008. Retrieved 12 December 2009.