Impressive Engines, Tailored for Land Rover Needs
For dynamic on-road performance, the top-of-the-range engine
option is a 4.4-litre 295bhp (220kW) petrol V8, derived from Jaguar’s
acclaimed AJ-V8 4.2-litre. Developments for Land Rover include
increased low-end torque (maximum of 425Nm or 315lb ft), greater
weather-proofing – especially against dust and water ingress – and
revised breathing for wading in rivers. This is likely to be the most
popular engine in the Discovery 3’s biggest market, the USA.
For Europe, the best-selling engine is expected to be the
refined and flexible 2.7-litre TDV6 turbodiesel (not available in North
America), a high pressure ‘common rail’ unit that uses variable
geometry turbocharging. Another version of this new V6 recently made a
much-praised debut in the Jaguar S-Type. The Land Rover engine has been
extensively developed to suit the Discovery 3 and produces 190bhp
(140kW) and a massive 440Nm (325lb ft) of torque. Technical advances
include its CGI (compacted graphite iron) block, which is lighter,
stiffer and more durable than conventional cast iron.
Selected markets will also take a 4.0-litre 215bhp (160kW)
petrol V6 engine that is torquey (360Nm or 265lb ft), smooth and
durable. For Discovery 3, it too has been extensively developed to suit
Land Rover’s unique requirements.
The petrol engines are mated to a six-speed ‘intelligent shift’
electronically controlled ZF automatic transmission. It offers a
‘sport’ mode which delivers more performance-oriented throttle response
and gear shifts, and also features Land Rover’s Command Shift operation
– which gives the driver full manual control of gear changing. The TDV6
is available either with this advanced automatic transmission, or with
a six-speed ZF manual gearbox.
Drive goes to all four wheels. Electronic Traction Control and
Dynamic Stability Control modulate power supply and braking, ensuring
maximum grip in all conditions. Throttle response, gear change patterns
and suspension settings are also computer controlled, determined by
speed and road (or off-road) conditions. Low range is also available,
for tough terrain. This can be easily selected, electronically, on the
move. The central differential fully locks if conditions require
greater traction.
User Friendly New Technologies
The Discovery 3 bristles with new technologies. Among them is
Land Rover’s patented Terrain Response™ system, previewed on the recent
Range Stormer concept car. Terrain Response is a major advance that
optimises driveability and comfort, as well as maximising traction. The
driver simply chooses one of five terrain settings via a chunky rotary
dial on the centre console: a general driving program, plus one for
slippery conditions (known as grass/gravel/snow) and three special
off-road modes, namely mud and ruts, sand, and rock crawl. Terrain
Response then automatically selects the most appropriate settings for
the vehicle's advanced electronic controls and traction aids.
Vehicle functions controlled by Terrain Response include ride
height, engine torque response, Hill Descent Control (which limits
downhill speed, and is an award-winning and patented Land Rover
technology), Electronic Traction Control, transmission and differential
settings. “Terrain Response is a good example of Land Rover’s
commitment to offering ‘smart’ technology that aids the driver,” says
Matthew Taylor. “It is easy to use. It simplifies rather than
complicates driving.”
The Discovery 3 also offers the option of adaptive headlights
that swivel with the direction of travel to illuminate the road ahead.
Another innovation is Land Rover’s Integrated Body-frame™, a
new type of vehicle architecture that combines the torsional rigidity,
car-like handling and refinement of a monocoque (or unitary) body with
the strength and versatility of a traditional ladder-frame, as used on
many SUVs. Computer-aided design, high-strength steel and a
sophisticated hydroforming production technique combine to deliver this
new technology. Hydroforming uses high-pressure fluids rather than a
press tool to shape the frame, which results in a lighter weight,
cleverer shapes and much tighter tolerances.
Handling is further helped by fully independent suspension.
Height adjustable air springs, similar to those used on the
award-winning Range Rover, will be fitted to the majority of Discovery
3s. Entry-level models use coil springs. Double wishbones are used
front and rear, offering good wheel control and articulation.
Rack-and-pinion steering delivers precise and intuitive control.