Ford Power Stroke engine
| Ford Power Stroke engine | |
|---|---|
| Overview | |
| Manufacturer |
Navistar International (1994-2010) Ford Motor Company (2011-present) |
| Also called | Ford Powerstroke |
| Production | 1994-present |
| Combustion chamber | |
| Configuration |
OHV 90° V8 DOHC |
| Chronology | |
| Predecessor | International Harvester IDI (1983-1994.5) |
| 7.3 Power Stroke | |
|---|---|
| Overview | |
| Manufacturer | Navistar International |
| Combustion chamber | |
| Configuration | V8 |
| Displacement | 7.3 L, 444 cu³ |
| Cylinder bore | 4.11 inches |
| Piston stroke | 4.18 inches |
| Cylinder block alloy | Iron |
| Cylinder head alloy | Iron |
| Valvetrain | OHV |
| Combustion | |
| Fuel type | Diesel |
| Output | |
| Power output | 210-275 hp |
| Torque output | 425-525 lb-ft |
| Dimensions | |
| Dry weight | ≈920(Dry) |
| Chronology | |
| Predecessor | 7.3 L IDI |
| Successor | 6.0 Power Stroke |
Power Stroke is a line of diesel engines found in Ford Diesel trucks, Ford Excursion SUVs, Ford Econoline vans, Ford LCF commercial vehicles and the Brazilian Ford Ranger. The V8 engines were produced by Navistar International Corp. until 2010 when Ford decided to build their diesel engine completely in-house. The Power Stroke engines compete primarily in the United States full-size pickup truck market with the Duramax V8 from General Motors/Isuzu and the B series straight 6 from Cummins.
The 7.3L Power Stroke diesel was made available for 1995 models in Ford Econoline vans, the SUV Ford Excursion and Ford heavy duty pickups. It effectively replaced the 7.3 IDI with which it shared nothing other than displacement size.
The Power Stroke is an electronically controlled, direct injection engine with a 4.11 in (104 mm) bore and 4.18 in (106 mm) stroke creating a displacement of 444 cu in (7.3 L). It has a 17.5:1 compression ratio, and has a dry weight of approximately 920 lb (420 kg). This engine produced up to 250 hp (190 kW) and 505 lb·ft (685 N·m) of torque in automatic-transmission trucks during the last years of production, and 275 hp (205 kW) and 525 lb·ft (712 N·m) of torque in manual-transmission trucks. The oil capacity is 15 quarts (17.03 liters). The oil pan holds 12 quarts (14.20 liters) while the top end holds an additional 3 quarts (2.84 liters).
The 1995 to 1996/97 DI Power stroke had "single shot" HEUI (hydraulically actuated electronic unit injection) fuel injectors and ran a high pressure oil pump (HPOP) to create the necessary oil pressure to fire the fuel injectors. This generation of Powerstroke utilized a HPOP with a 15° swash plate angle. 1995-1997 trucks used a cam driven fuel pump, whereas the 1999-2003 trucks used a frame rail mounted electric fuel pump. The California trucks in 1996 and 1997 had split shot fuel injectors; other trucks didn't get split shot injectors until 1999. Single shot injectors only inject one charge of fuel per cycle, whereas the split shot injector releases a preliminary light load before the main charge to initiate combustion in a more damped manner. This controlled injection helps reduce the sharp combustion 'knock'.
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Wikipedia