Zvezda M503
The Zvezda M503 was 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 5.4 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 7 bank, 6 cylinder per bank diesel radial engine
- Bore: 160 mm (6.29 in)
- Stroke: 170 mm (6.69 in)
- Displacement: 143.6 L (8,763 in³)
- Length: 3700 mm (145.66 in)
- Diameter: 1560 mm (61.41 in)
- Dry weight: 5450 kg (12,015 lb) (dry)
Components
- Valvetrain: 7 overhead cam shafts, one per bank.
- Fuel type: Diesel fuel
- Cooling system: Liquid-cooled
Performance
- Power output: 3,942 hp (2,940 kW, 3,997 PS) at 2,200 rpm
- Specific power: 20.47 kW/L (0.44 hp/in³)
- Power-to-weight ratio: 0.53 kW/kg (0.32 hp/lb)
Comparable engines
References
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Translated from : German Wikipedia
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