This articleneeds additional citations forverification.(December 2009) |
TheJaguar AJ-V6 engineis apiston enginebased on theFord Duratec V6 engine.[2]The Duratec V6 was originally aPorschedesign, purchased by theFord Motor CompanywithCosworthfinishing the engineering to suit Ford's needs. One notable addition is the use ofvariable valve timing,a feature also shared withMazda's version of the engine. It is available in 2.1 L (2,099 cc), 2.5 L (2,495 cc) and 3.0 L (2,967 cc) displacements.
| Jaguar AJ-V6 | |
|---|---|
 an AJ-V6 in a Jaguar X-Type | |
| Overview | |
| Manufacturer | Ford Motor CompanyforJaguar Cars |
| Designer | Porsche |
| Production | 2000–2011 |
| Layout | |
| Configuration | 60°V6 |
| Displacement |
|
| Cylinder bore |
|
| Piston stroke |
|
| Cylinder blockmaterial | Aluminium |
| Cylinder headmaterial | Aluminium |
| Valvetrain | DOHC4 valves x cyl.withVVT |
| Compression ratio | 10.3:1, 10.75:1 |
| RPM range | |
| Max. engine speed | 6,800 |
| Combustion | |
| Fuelsystem | Sequential multi-port fuel injection |
| Fuel type | Gasoline |
| Oil system | Wet sump |
| Cooling system | Water-cooled |
| Output | |
| Power output | 157–260 hp (117–194 kW; 159–264 PS)[1] |
| Torque output | 148–221 lb⋅ft (201–300 N⋅m) |
| Chronology | |
| Predecessor | Jaguar AJ16 |
| Successor | Jaguar AJ126 |
The AJ-V6 engine has an aluminium engine block andJaguar Carsdesigned aluminiumDOHCcylinder heads. It usessequential fuel injection,has4 valves per cylinderwithVVT,features fracture-split forged powder metalconnecting rodsand a one-piece castcamshaftand has direct-acting mechanical bucket (DAMB) tappets, these design aspects differentiating the AJ-V6 from the Ford and Mazda versions.
AJ20
editTheAJ202.1 L (2,099 cc) version has an 81.6 mm × 66.8 mm (3.21 in × 2.63 in)boreandstroke.Although it displaces nearly 2.1 litres (2,099 cc), it is marketed as a "2.0". It produces 157 hp (117 kW; 159 PS) and 148 lb⋅ft (201 N⋅m). Thecompression ratiois 10.75:1.
This engine is used in the following vehicles:
- Jaguar X-Type2.0 (UK)
AJ25
editTheAJ25is a 2.5 L; 152.3 cu in (2,495 cc) version built. It shares the 2.1's 81.6 mm (3.21 in) bore and is stroked to 79.5 mm (3.13 in), the same as the 3.0 L (2,967 cc). It delivers 193 hp (144 kW; 196 PS) at 6800 rpm with 178 lb⋅ft (241 N⋅m) of torque at 3000 rpm from 10.3:1 compression.
This engine is used in the following vehicles:
- 2001-2009Jaguar X-Type2.5, 193 hp (144 kW; 196 PS) and 180 lb⋅ft (244 N⋅m)
- 2002-2006Jaguar S-Type2.5 (UK), 201 hp (150 kW; 204 PS) and 185 lb⋅ft (251 N⋅m)
AJ30
editTheAJ30is a 3.0 L (2,967 cc) version and is the most common, especially considering theDuratec 30.It has an 89 mm (3.5 in) bore and shares the 2.5's 79.5 mm (3.13 in) stroke. In the X-Type, it produces 228 hp (170 kW; 231 PS) and 209 lb⋅ft (283 N⋅m). The Jaguar XF debuted a refined version of the AJ30 with continuously variable cam-phasing and variable geometry air intakes to increase power and broaden the powerband up to its 6800 rpm redline.
This engine is used in the following vehicles:
- 2000-2008Jaguar S-Type,240 hp (179 kW; 243 PS) and 221 lb⋅ft (300 N⋅m)
- 2002-2009Jaguar X-Type,228 hp (170 kW; 231 PS) and 209 lb⋅ft (283 N⋅m)
- 2003-2010Jaguar XJ,237 hp (177 kW; 240 PS) and 216 lb⋅ft (293 N⋅m)
- 2008-2011Jaguar XF240 hp (179 kW; 243 PS) and 221 lb⋅ft (300 N⋅m)
- 2000-2006Lincoln LS