Zvezda M503
The Zvezda M503 (built at AO Zvezda, St Petersburg) is a maritime 7 bank, 42 cylinder diesel radial engine built in the 1970s by the Soviet Union. Its primary use was in Soviet missile boats that used three of these engines.
This engine may have had other applications, but due to its extreme weight (5,400 kg (11,900 lb)), it would have been limited to ground or naval applications.
A German tractor pulling team designed a vehicle, named "Dragon Fire", around a methanol-fueled version of this engine;[1] this modified[2] engine is said to weigh 3,200 kg (7,100 lb) including the gearbox, for use in the 4.5 ton tractor pulling class, making 8,000 hp (6,000 kW) at 2,500 rpm.
Specifications (Zvezda M503A)
Zvezda M503
General characteristics
- Type: 42-cylinder liquid-cooled seven-bank,
six-cylinder-per-bank diesel radial engine - Bore: 6.3 in (160 mm)
- Stroke: 6.7 in (170 mm)
- Displacement: 8,760.5 cu in (143.559 l)
- Length: 145.66 in (3,700 mm)
- Diameter: 61.41 in (1,560 mm)
- Dry weight: 12,015 lb (5,450 kg)
Components
- Valvetrain: 7 overhead cam shafts,
one per bank (SOHC). - Fuel type: Diesel fuel
- Cooling system: Liquid-cooled
Performance
- Power output: 3,942 bhp (2,940 kW; 3,997 PS)
at 2,200 rpm - Specific power: 0.450 hp/in3 (20.47 kW/L)
- Power-to-weight ratio: 0.32 hp/lb (0.53 kW/kg)
Comparable engines
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References
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Wikimedia Commons has media related to Zvezda M503. |
- "Dragon fire". Archived from the original on July 26, 2010. Retrieved May 16, 2010.
- http://www.kramp.com/info/index.php?id=2370%5B%5D
- William Pearce (5 September 2016). "Yakovlev M-501 and Zvezda M503 and M504 Diesel Engines". Old Machine Press.
Translated from : German Wikipedia
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