Jaguar AJ-V6 engine

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Jaguar AJ-V6
an AJ-V6 in a Jaguar X-Type
Overview
Manufacturer	Ford Motor Company for Jaguar Cars
Designer	Porsche
Production	2000–2011
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 material	Aluminium
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 Cosworth finishing the engineering to suit Ford's needs. 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.

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