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A New British Diesel Engine

A New British Diesel Engine July , 1933 AIRCRAFT ENGINEERING 149 Details of the Nine-Cylinder Radial Bristol Phoenix Compression-Ignitio n Engine N E of th e experimental aeroplanes shown a t the Royal Air Force Display on June 24th was a Wcstlan d Wapiti fitted with the new Bristol Phoenix compression-ignition engine. This engine is th e outcome of over seven years' research and development work by the Engine Research Department of the Bristol Aeroplane Company Ltd., on behalf of th e Air Ministry. This work, so far as i t ha d then gone, was described by Mr. A. H . R. Fedden in a paper read before the Fifth International Air Congress, held at The Hague in September 1930, which was published in full in AIRCRAFT ENGINEERING, Vol. II, October 1930, pp. 261- 262. In tha t paper the results of experiments with a single-cylinder unit, with a bore of 7 ⅜ in . an d 12-in. stroke giving a swept volume of approximately 8½ litres, were reported. These had produced a unit which ran satisfac­ torily a t full throttle opening at 1,100 r.p.m. with a power output of 75 b.h.p. a t 104 lb./sq. in. b.m.e.p. , th e fuel consumption being 0·45 lb. / b.h.p. hour. That cylinder consisted of a forged steel open-ended barrel with a screwed- on head of Y alloy. It had four overhead valves, two inlet and tw o exhaust, with the fuel-injection valve in th e centre . The nine-cylinder radial air-cooled Phoenix engine has been developed as a result of over 1,500 hours running with various single- cylinder units of this type. It has itself, as a 2 in. less a t 53 in. The same size cylinders are complete engine, been under development for also fitted, 5¾ in . bore by 7½ in . stroke, giving eighteen months, and has ru n for over 200 Th e principal characteristics of th e th e same swept volume of 1,753 cu. in. (28·7 hours on the tes t bench. It is on the same lines first British radial air-cooled com­ litres). The rated horse-power, at normal as the nine-cylinder Pegasus internal-combus­ pression-ignitio n engine produced speed of 1,900 r.p.m., is 350 b.h.p., giving a tion engine, which was fully described in by the Bristol Company are here weight per horse-power of 2·83 lb./h.p. , com­ AIRCRAFT ENGINEERING, Vol. V, March 1933, publishe d pared with the 520 b.h.p . of the Pegasus at at p. 61. The weight, 990 lb., is th e same , as 2,000 r.p.m.—weight per horse-power 1·9 lb. / is also the length, 43 in., the diameter being h.p. For comparative purposes it may be recalled that the twelve-cylinder Rolls-Royce Condor water-cooled in-line Diesel engine, described in AIRCRAFT ENGINEERING, Vol. III, December 1932, p. 308, is rated at 480 b.h.p. a t the same speed, 1900 r.p.m., as th e Phoenix, its weight being 1,504 lb., giving a weight per horse-power of 3·13 lb./h.p . Ordinary commercial fuel oil, as used by th e Admiralty and for lorry transport, with a specific gravity of 0·85 is used. The fuel con­ sumption is 25 pe r cent less than the petrol consumption of th e Pegasus. LEADIN G PARTICULARS. BRISTOL PHOENIX DIESEL ENGINE Diamete r 53in. Lengt h 43 in. Bor e .. .. .. .. .. .. .. .. 5¾ in. Strok e 7½ in. Swep t volume 1,753 cu. in. (28-7 litres) Weigh t 990 lb. Norma l speed 1,900 r.p.m. Rate d horse-power .. .. .. .. .. 350 b.h.p. Weigh t per horse-ixjwer .. .. ., .. 2-83 lb./h.p . BRISTOL PEGASUS PETROL ENGINE Diamete r 55 in. Lengt h 43 in. Bore 5¾ in. Strok e 7½ in. Swep t volume 1,753 cu. in. (8-7 litres. Weigh t ..990 lb.) Norma l speed . . .. .. .. .. .. 2,000 r.p.m. Rate d horse-power 520 b.h.p. Weigh t per horse-powe r 1-9 lb./h.p . U.K . CONDOR DIESEL ENGINE Heigh t 45½ in. Widt h 30½ in. Lengt h 74¼ in. Bore .. .. .. .. .. .. .. .. 5½ in. Strok e 7½ in) Swept volume 2,106 cu. in. (34-5 litres. Weigh t 1,504 1b. Norma l speed 1,900 r.p.m. Rate d horse-power 480 b.h.p . Weigh t per horse-power .. .. .. .. 3-13 lb./h.p . http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Aircraft Engineering and Aerospace Technology Emerald Publishing

A New British Diesel Engine

Aircraft Engineering and Aerospace Technology , Volume 5 (7): 1 – Jul 1, 1933
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Publisher
Emerald Publishing
Copyright
Copyright © Emerald Group Publishing Limited
ISSN
0002-2667
DOI
10.1108/eb029695
Publisher site
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Abstract

July , 1933 AIRCRAFT ENGINEERING 149 Details of the Nine-Cylinder Radial Bristol Phoenix Compression-Ignitio n Engine N E of th e experimental aeroplanes shown a t the Royal Air Force Display on June 24th was a Wcstlan d Wapiti fitted with the new Bristol Phoenix compression-ignition engine. This engine is th e outcome of over seven years' research and development work by the Engine Research Department of the Bristol Aeroplane Company Ltd., on behalf of th e Air Ministry. This work, so far as i t ha d then gone, was described by Mr. A. H . R. Fedden in a paper read before the Fifth International Air Congress, held at The Hague in September 1930, which was published in full in AIRCRAFT ENGINEERING, Vol. II, October 1930, pp. 261- 262. In tha t paper the results of experiments with a single-cylinder unit, with a bore of 7 ⅜ in . an d 12-in. stroke giving a swept volume of approximately 8½ litres, were reported. These had produced a unit which ran satisfac­ torily a t full throttle opening at 1,100 r.p.m. with a power output of 75 b.h.p. a t 104 lb./sq. in. b.m.e.p. , th e fuel consumption being 0·45 lb. / b.h.p. hour. That cylinder consisted of a forged steel open-ended barrel with a screwed- on head of Y alloy. It had four overhead valves, two inlet and tw o exhaust, with the fuel-injection valve in th e centre . The nine-cylinder radial air-cooled Phoenix engine has been developed as a result of over 1,500 hours running with various single- cylinder units of this type. It has itself, as a 2 in. less a t 53 in. The same size cylinders are complete engine, been under development for also fitted, 5¾ in . bore by 7½ in . stroke, giving eighteen months, and has ru n for over 200 Th e principal characteristics of th e th e same swept volume of 1,753 cu. in. (28·7 hours on the tes t bench. It is on the same lines first British radial air-cooled com­ litres). The rated horse-power, at normal as the nine-cylinder Pegasus internal-combus­ pression-ignitio n engine produced speed of 1,900 r.p.m., is 350 b.h.p., giving a tion engine, which was fully described in by the Bristol Company are here weight per horse-power of 2·83 lb./h.p. , com­ AIRCRAFT ENGINEERING, Vol. V, March 1933, publishe d pared with the 520 b.h.p . of the Pegasus at at p. 61. The weight, 990 lb., is th e same , as 2,000 r.p.m.—weight per horse-power 1·9 lb. / is also the length, 43 in., the diameter being h.p. For comparative purposes it may be recalled that the twelve-cylinder Rolls-Royce Condor water-cooled in-line Diesel engine, described in AIRCRAFT ENGINEERING, Vol. III, December 1932, p. 308, is rated at 480 b.h.p. a t the same speed, 1900 r.p.m., as th e Phoenix, its weight being 1,504 lb., giving a weight per horse-power of 3·13 lb./h.p . Ordinary commercial fuel oil, as used by th e Admiralty and for lorry transport, with a specific gravity of 0·85 is used. The fuel con­ sumption is 25 pe r cent less than the petrol consumption of th e Pegasus. LEADIN G PARTICULARS. BRISTOL PHOENIX DIESEL ENGINE Diamete r 53in. Lengt h 43 in. Bor e .. .. .. .. .. .. .. .. 5¾ in. Strok e 7½ in. Swep t volume 1,753 cu. in. (28-7 litres) Weigh t 990 lb. Norma l speed 1,900 r.p.m. Rate d horse-power .. .. .. .. .. 350 b.h.p. Weigh t per horse-ixjwer .. .. ., .. 2-83 lb./h.p . BRISTOL PEGASUS PETROL ENGINE Diamete r 55 in. Lengt h 43 in. Bore 5¾ in. Strok e 7½ in. Swep t volume 1,753 cu. in. (8-7 litres. Weigh t ..990 lb.) Norma l speed . . .. .. .. .. .. 2,000 r.p.m. Rate d horse-power 520 b.h.p. Weigh t per horse-powe r 1-9 lb./h.p . U.K . CONDOR DIESEL ENGINE Heigh t 45½ in. Widt h 30½ in. Lengt h 74¼ in. Bore .. .. .. .. .. .. .. .. 5½ in. Strok e 7½ in) Swept volume 2,106 cu. in. (34-5 litres. Weigh t 1,504 1b. Norma l speed 1,900 r.p.m. Rate d horse-power 480 b.h.p . Weigh t per horse-power .. .. .. .. 3-13 lb./h.p .

Journal

Aircraft Engineering and Aerospace Technology – Emerald Publishing

Published: Jul 1, 1933

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