Jaguar AJ-V6 engine

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Jaguar AJ-V6
Jaguar XKR - Flickr - The Car Spy (7).jpg
an AJ-V6 in a Jaguar X-Type
Overview
Manufacturer Ford Motor Company for Jaguar Cars
Designer Porsche
Production1999–2011
Layout
Configuration 60° V6
Displacement
  • 2.1 L; 128.1 cu in (2,099 cc)
  • 2.5 L; 152.3 cu in (2,495 cc)
  • 3.0 L; 181.1 cu in (2,967 cc)
Cylinder bore
  • 81.6 mm (3.21 in)
  • 89 mm (3.5 in)
Piston stroke
  • 66.8 mm (2.63 in)
  • 79.5 mm (3.13 in)
Cylinder block material Aluminium
Cylinder head materialAluminium
Valvetrain DOHC 4 valves x cyl. with VVT
Compression ratio 10.3:1, 10.75:1
RPM range
Max. engine speed 6,800
Combustion
Fuel system 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 Jaguar AJ-V6 engine is a piston engine based on the Ford Duratec V6 engine. [2] The Duratec V6 was originally a Porsche design, purchased by the Ford Motor Company with a proprietary Cosworth cylinder head design to suit Ford's design brief. One notable addition is the use of variable valve timing, a feature also shared with Mazda'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.

Contents

The AJ-V6 engine has an aluminium engine block and Jaguar Cars designed aluminium DOHC cylinder heads. Using sequential fuel injection, it has 4 valves per cylinder with VVT; fracture-split forged powder metal connecting rods; one-piece cast camshaft; and direct-acting mechanical bucket (DAMB) tappets these features aspects differentiating the AJ-V6 from the Ford and Mazda versions.

AJ20

The AJ202.1 L (2,099 cc) version has an 81.6 mm × 66.8 mm (3.21 in × 2.63 in) bore and stroke. 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). The compression ratio is 10.75:1.

This engine is used in the following vehicles:

AJ25

The AJ25 is 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:

AJ30

The AJ30 is a 3.0 L (2,967 cc) version and is the most common, especially considering the Duratec 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:

See also

References

  1. "Polaris Drift Sprint - Driving Experiences".
  2. "Ford Racing Engine History" (PDF). July 2018.