JLR has confirmed that the AJ200D, the first of its new alloy Ingenium engines, will debut in the Jaguar XE saloon, so the Land Rover Discovery Sport will have to wait until late 2015 to get the sophisticated new motor.
The stop-start-equipped Euro VI emissions-compliant AJ200D is an all-new design that has no carried-over parts, or constraints imposed by having to use existing tooling – it’ll be the first product of JLR’s new Engine Manufacturing Centre near Wolverhampton, in January 2015.
At its heart is an alloy block with 12mm-offset crankshaft – which helps improve power, torque and efficiency – and a contra-rotating balancer shaft. It’s designed to be installed in transverse and longitudinal directions, and be mated to front-, rear- or four-wheel drive transmissions, including electric hybrids.
It’s topped by a chain-driven twin-cam 16-valve cylinderhead with direct-injection and variable valve timing, with either one or two turbos depending on the level of tune. We’d expect the latter to boast around 250bhp.
Despite its smaller cubic capacity, JLR engineers have told LRO that it will have ‘significantly better performance’ than the 2.2, and it will be able to replace the V6 diesel in some applications – such as the four-cylinder Range Rover we spied testing earlier this year (April 2014 issue), presumably. We know there’s a four-cylinder Hybrid on the way, and an 80kg lighter four-cylinder Range Rover Sport planned. Both will be Ingenium powered.
Extensive use of low-friction materials and roller bearings (camshafts and balancer shaft), plus computer-controlled oil and water pumps and piston-cooling jets, mean the AJ200D has 17 per cent less internal friction than the existing 2.2, making it more fuel efficient and more responsive.
Reliability and ease of repair if it does go wrong have also been high on the agenda. JLR reckons it’ll be one of its most tested and proven engines before it hits the streets, having been subjected to more than 2 million miles of road testing and 72,000 hours on a dyno. That includes testing with poor quality fuels, including very high sulphur diesel, to ensure it’ll cope with the worst fuel on the planet.
Thanks to virtual reality technology, JLR engineers have been able to assess and improve the accessibility of parts and fixings during the design process. The number of special tools required has been reduced, the use of common fixings and single-plane access to them has increased (just two identical bolts for the alternator accessible from above, three for the aircon pump accessible from one side), while repair times and costs have been pushed as low as possible. With 21,000-mile/two-year service intervals too, owners of Ingenium-powered Land Rovers should expect smaller bills from dealers. Only time will tell if that benefit is passed on to customers though…
The Ingenium engine family's modular design means both petrol and diesel engines will share some common parts, with smaller and larger capacities able to be developed easily. Each cylinder has a 500cc capacity, with a common bore/stroke and cylinder spacing, so there’s no reason why a 1.5-litre three-cylinder, 2.5-litre five-cylinder, or 3.0-litre six-cylinder couldn't follow. Inline and vee configurations are possible too.
JLR is anticipating a 15-year lifespan for the engine, and has considered how it will incorporate technical advances due during the next decade to future-proof it. It won’t sell Ingenium engines to other manufacturers, but will continue to buy-in Ford engines for some applications for the foreseeable future.