The LR-TDV8 4.4-litre with parallel sequential turbocharging replaces the outstanding LR-TDV8 3.6-litre and is unique to the Land Rover Range Rover. An all-new 'super-diesel', the LR-TDV8 combines superior power and massive torque with unparalleled levels of refinement. Despite the extra performance, this sublime V8 engine is cleaner too, delivering even lower fuel consumption and CO2 emissions than its predecessor and meeting the stringent EU5 emissions standards. With 313PS and 700Nm torque, the Range Rover's new powertrain matches power with conscience, reducing CO2 emissions by an impressive 14 percent. Available only on 4.4-litre LR-TDV8 models, this 'smart' transmission integrates with the diesel engine to deliver the most efficient operating regime in all conditions. To reflect the performance of the new 4.4-litre LR-TDV8, diesel models are fitted with the same Brembo-based braking system fitted to the 5.0-litre LR-V8 supercharged model. Providing the immense stopping power required for only the highest performing vehicles, the system comprises 380mm ventilated front discs with unique, lightweight aluminium six-piston opposed action monoblock calipers. 365mm ventilated discs with single piston sliding calipers are fitted at the rear.
A new Exterior Design Pack option gives customers the chance to give their Land Rover Range Rover a more individual look and new colours and wheels have been added to the range. TERRAIN TECHNOLOGIES are specifically designed to target emissions and improve efficiency of Land Rover vehicles, without compromising luxury, refinement or all-terrain capabilities. The 2011 Range Rover gains the remarkably efficient 4.4-litre LR-TDV8 engine which realises a reduction in CO2 emissions of 14 percent from 294g/km to 253g/km compared to the outgoing 3.6-litre LR-TDV8 which it replaces. The new LR-TDV8 also complies with the latest EU5 emissions regulations which significantly reduces emissions of HC, CO2 and NOx. Increasing the capacity by 22 percent over the 3.6-litre LR-TDV8 equates to a lower specific output than the smaller engine, significantly reducing emissions of engine-out NOx. The new ceramic glow plugs operate 250°C hotter than the previous steel units and are more durable.
These factors make it possible to run the glow plugs for a longer period after start-up (100 seconds) and more frequently, improving efficiency and reducing emissions. The LR-V8 petrol was designed to deliver superior low-end torque from the outset and is packed with state-of-the-art efficiency features. The new ZF 8HP70 8-speed transmission is tuned to take advantage of the LR-TDV8's low end torque with torque converter lock-up being selected as early as possible to reduce slip and energy loss. The wider ratio spread, tall overdriven top gear and the fact that no more than two internal clutches are open at any one time all contribute to improved fuel economy and emissions. The Land Rover Range Rover's Intelligent Power Management System ensures the alternator is charging the battery (and drawing energy from the engine) at the most efficient times, such as when the vehicle is coasting rather than accelerating. The electrical system is scaled such that the battery only needs to be charged to 80 percent, reducing the workload on the alternator.
It also moderates the charge rates in cold weather when the battery is less able to cope with high charge rates, increasing battery life for lower cost and environmental impact. Most of the time only one turbocharger is in use (up to motorway cruising speeds and average acceleration). Because it is a medium, rather than large-sized turbo with variable geometry, response is excellent with no discernable lag. Packaging is excellent, one turbo and manifold below each bank of cylinders. The combination of two turbochargers makes it possible to optimise efficiency and performance at all times. Because one turbocharger is in use most of the time, pumping losses are reduced. More efficient than series turbocharger systems, whose smaller primary turbocharger increases pumping losses and fuel consumption through raised exhaust back pressure. Clever energy management means no fuel is wasted in the production of energy for the Land Rover Range Rover's electrical systems. Land Rover's IPMS (Intelligent Power Management System) ensures the alternator does no more work - and the engine consumes no more fuel - than is strictly necessary.
