Continental AV1790
From Wikipedia, the free encyclopedia
The Continental AV1790 is an American V12 engine used in armored vehicles. Produced by Continental Motors, the AV1790 was used in a variety of limited production and pilot heavy tanks, including the M53 and M55 howitzers, and the T30, T34 and M103 tanks.
The AV1790 was put into service as the power plant for the Patton line of American medium tanks. The M46 Patton, an upgraded M26 Pershing, was the first of these to carry one[1]. This was inherited by the M47 and M48 tanks. While the performance of the engines was satisfactory, the fuel consumption rate became a critical shortcoming as tank weight increased.
As a result there were also diesel versions developed (AVDS,[2] Air Cooled, V-engine configuration, Diesel, Superturbocharged) for the M48a3 and M60 tanks, and the Swedish Stridsvagn 104 (British-built Centurions, re-engined with diesel engines in the 1980s).
The AV 1790 would continue to be widely used as a power plant in US tracked vehicles and tractors throughout the Cold War, and remains in service across many countries today.
The engine prefixes are:
- A-Air cooled
- V-Vee cylinder arrangement
- D-Diesel
- S-Supercharged
- 1790-Displacement in Cubic Inches
Specifications
| Type: | 90 degree four-stroke V12 |
|---|---|
| Bore: | 5.75 in (146.05 mm) |
| Stroke: | 5.75 in (146.05 mm) |
| Displacement: | 1791.7 cu in (29 361 cc) |
| Cooling: | forced air cooling |
Gasoline versions
| AV-1790-3 | AV-1790-5C | AV-1790-7C | |
|---|---|---|---|
| Power output (gross) | 810 hp at 2800 rpm | 810 hp at 2800 rpm | 810 hp at 2800 rpm |
| Power output (net) | 704 hp (525 kW) at 2800 rpm | 650 hp (485 kW) at 2400 rpm | 690 hp (515 kW) at 2800 rpm |
| Torque (net): | 1,440 pound-feet (1,950 N⋅m) at 2200 rpm | 1,250 pound-feet (1,690 N⋅m) at 2100 rpm | 1,410 pound-feet (1,910 N⋅m) at 2200 rpm |
| BSFC | |||
| Power-to-weight ratio | |||
| Supercharger | no | ||
| Fuel system | carburetor | ||
| Fuel type | 80 octane gasoline (petrol) | 80 octane gasoline | 80 octane gasoline |
| Ignition | magneto | ||
| Compression ratio | 6.5:1 | ||
| Dry weight | 2332 lb (1058 kg) | 2554 lb (1158 kg) | 2647 lb (1200 kg) |
Diesel versions
| Designation | Weight, dry | Horsepower, gross | Horsepower, net | Torque, gross | Torque, net | Compression ratio | Induction turbocharged airflow | Fuel type | Fuel consumption (at 2400 RPM) | Use | Note |
|---|---|---|---|---|---|---|---|---|---|---|---|
| AVDS-1790-2A | 4,700 lb (2,100 kg) | 750 hp (560 kW)
at 2,400 rpm |
643 hp (479 kW)
at 2,400 rpm |
1,750 lb⋅ft (2,370 N⋅m)
at 1,900 rpm |
1,575 lb⋅ft (2,135 N⋅m)
at 1,750 rpm |
16:1 | 2075 cfm | DF-A, DF-1, DF-2 | 296 lbs / hour | M60, M60A1, M728, M60 AVLB, retrofitted to M47 & M48 | original series |
| AVDS-1790-2AC | for Centurion | ||||||||||
| AVDS-1790-2AR | M88 | ||||||||||
| AVDS-1790-2C[3] | 4,900 pounds (2,200 kg) | M60A1, M60A3, M60 AVLB | |||||||||
| AVDS-1790-2D[4] | 4,880 pounds (2,210 kg) | M60, M60A1, retrofitted to M48A3 & M48A5 | |||||||||
| AVDS-1790-2DR[5] | M88A1 | ||||||||||
| AVDS-1790-2CC | for Centurion | ||||||||||
| AVDS-1790-2DC | 4,876 pounds (2,212 kg) | for Centurion | |||||||||
| AVDS-1790-5A | 4,900 pounds (2,200 kg) | 908 hp (677 kW)
at 2,400 rpm |
775 hp (578 kW)
at 2,400 rpm |
2,150 lb⋅ft (2,920 N⋅m)
at 2000 rpm |
14.5:1 | 2,200 cfm | 380 lbs / hour | Merkava Mk. I, Magach 7 | |||
| AVDS-1790-6A | Merkava Mk. II, Nakpadon | ||||||||||
| AVDS-1790-7A | 950 hp (710 kW) | Merkava Mk. II | |||||||||
| AVDS-1790-8A | 5,100 pounds (2,300 kg) | 1,050 horsepower (780 kW)
at 2,400 rpm |
892 hp (665 kW)
at 2,400 rpm |
2,500 lb⋅ft (3,400 N⋅m)
at 1,900 rpm |
2,450 cfm | 430 lbs / hour | |||||
| AVDS-1790-8CR | M88A2 | ||||||||||
| AVDS-1790-9A | 5,100 pounds (2,300 kg) | 1,200 hp (890 kW)
at 2,400 rpm |
1,000 hp (750 kW)
at 2,400 rpm |
2,820 lb⋅ft (3,820 N⋅m)
at 1,900 rpm |
2,800 cfm | 480 lbs / hour | |||||
| AVDS-1790-9AR | Merkava Mk. III | ||||||||||
| AVDS-1790 1500 | 5,000 pounds (2,300 kg) | 1,500 hp (1,100 kW)
at 2,600 rpm |
3,635 lb⋅ft (4,928 N⋅m)
at 1,800 rpm |
JP-8, DF-A, DF-1, DF-2 | 570 lbs / hour |
