“Challenging the rules and standing out from the crowd, the new XF fuses sports car styling and performance with the refinement, space and sophistication of a luxury saloon. It is a defining example of Jaguar’s dedication to creating beautiful fast cars – and with magnificent new engines that are quite simply our best ever the XF sets new standards across the board.” Mike O’Driscoll, Managing Director, Jaguar Cars
THE NEW 2010 MODEL YEAR AT A GLANCE
- Significant enhancements to the new Jaguar XF for 2009
- Two all-new direct-injection 5.0-litre V8 engines
- New 3.0-litre V6 twin turbodiesel engine, available in two power outputs
- New XFR flagship joins the XF range
- New high-performance Diesel S model
- New, highly-equipped XF Portfolio specification joins the range alongside XF Luxury and XF Premium Luxury models (in South Africa XF Portfolio available by special order only)
- Upgraded features and specification across the XF range
The new XF is already acclaimed as a key element in the revitalisation of the Jaguar brand, with its new generation of beautiful fast cars. But now the car that defines Jaguar sporting luxury is even better, with major powertrain changes and a wider range of models – including a stunning new, supercharged XFR and a high-performance diesel.
The 2010 model year XF features all-new 5.0-litre direct-injection V8 petrol engines and a new 3.0-litre V6 twin-turbo diesel with a choice of two power outputs. There are also significant trim and specification changes – including many new features unique to the new XFR – and the introduction of new Portfolio derivatives. (In South Africa XF Portfolio available by special order only).
When it was introduced last year, the XF was soon recognised as a dramatic expression of a bold new Jaguar design language. It also soon became apparent that here was a car where the driving experience exceeded the expectations created by the striking appearance.
Now, the new XFR takes this driving experience to new levels, shifting the balance even further towards dynamic performance while still retaining the XF’s core values as a refined and luxurious sports saloon.
Power comes from an all-new 5.0-litre direct-injection supercharged V8 engine delivering 375kW and 625Nm of torque. Immediately recognisable thanks to unique new 20-inch wheels, a new front end design with revised chrome air intakes, ‘Supercharged’ bonnet louvres, four polished exhaust tailpipes, an aerodynamically functional boot lid spoiler and side sills, the new XFR also sports discreet ‘R’ badging.
The new XFR features Active Differential Control and Adaptive Dynamics – technologies being introduced for the first time on this and the XKR sports car. The electronically controlled differential and suspension system work together to optimise traction under hard acceleration and cornering – highly appropriate for a car that offers an electronically limited top speed of 250kph and reaches 100kph from standstill in just 4.9 seconds.
The XFR also adds a faster steering ratio and uses the XF’s largest ventilated disc brakes – although every version of the XF with the new, more powerful engines features uprated braking specification.
The attributes that marked out the XF at launch are still very much new and in the public eye. The four-door XF has the visual excitement of a coupe, but room inside for five adults to enjoy an interior wholly contemporary in style yet uniquely Jaguar.
“The new XF challenges the rules and redefines Jaguar sporting luxury. Our designers and engineer work together to develop elegant, inspired solutions to complex technical challenges. It’s a simple but very effective philosophy and the result is great new products like the XFR and new 3.0-litre diesel XF.” Mike O’Driscoll, Managing Director, Jaguar Cars
Simplicity and clever use of space are key to the XF’s interior design and this is unchanged in the new generation. For the driver, this is centred on the compact packaging of the JaguarDrive Selector™ transmission interface.
The beautiful cast alloy Selector has already gained recognition for its part in the distinctive XF ‘welcoming handshake’; a sequence in which the illuminated stop/start button pulsates like a heartbeat until pressed, when the JaguarDrive Selector™ rises into the driver’s hand and the rotating facia vents silently open.
Features such as this have already attracted more than 30,000 customers to the new XF – and now, in many instances, they have been enhanced even further.
The combination of aluminium dashboard, satin or gloss wood veneers, tailored instrument panel and door panels with twin-needle stitching as standard, plus Phosphor Blue halo illumination and interior mood lighting, set the XF’s cabin as far apart from its competitors as its exterior styling.
Customers seeking luxury appointments should look to the new Portfolio specification (in South Africa XF Portfolio available by special order only). Available with either naturally aspirated V8 petrol or 3.0 V6 diesel engines, the Portfolio model includes ultimate craftsmanship details such as contrast stitching on leather trim, Jaguar Suedecloth Premium headlining, deep-pile carpet mats with contrast edging and embroidered logos, wider veneer and trim colour choices and ventilated heated and cooled seats.
But it is the new powertrain options that are at the heart of the changes for 2010 model year. The all-new 5.0-litre AJ-V8 Gen IIIS engines – in 283kW/515Nm naturally aspirated and 375kW/625Nm supercharged ‘R’ guise – add an entirely new, even more sporting dimension to the XF range.
These new engines are Jaguar’s most efficient ever, and they deliver power and performance at a higher level across the board. In the case of the supercharged engine, compared to the 4.2-litre V8 that it supersedes, power has increased by a remarkable 23 percent and torque by 12 percent.
The result in the new XFR is a 0-100kph sprint time of just 4.9 seconds. More relevant in everyday driving, an excellent indicator of XFR’s great flexibility is the time it takes to accelerate from 80-110kph – just 1.9 seconds.
The comparisons for the naturally aspirated engine are equally impressive. Power is increased by 29 percent and torque by 25 percent.
The benchmark 0-100kph acceleration time is 5.7 seconds – some 0.8 seconds quicker than the 4.2 XF. Better still, these improvements are achieved with slight improvements in fuel economy and emissions performance. The new engines also meet EU Stage 5 emissions regulations – two years ahead of the European legislative requirement.
Don’t think for one moment that the new 3.0-litre turbodiesel engines are any less impressive than the new V8s. The AJ-V6 D Gen III engine – available in either 202kW/600Nm ‘S’ or 177kW/500Nm form – sets new standards of performance and refinement for the XF diesel customer.
Featuring parallel sequential turbochargers to help deliver the high levels of power and torque seamlessly and with effortless flexibility, this engine is perfectly matched to Jaguar’s sophisticated six-speed ZF 6HP28 automatic transmission.
The more powerful 202kW engine in the Diesel S gives the XF outstanding levels of performance. 0-100kph is despatched in just 6.4 seconds, 1.8 seconds quicker than the 2.7-litre model it replaces. In-gear acceleration is equally impressive, with a 80-110kph time of just 3.2 seconds. Maximum speed is electronically limited to 250kph.
The 177kW engine also offers new levels of performance, allowing the XF to reach 100kph in 7.1 seconds – a full second quicker than the 2.7-litre model – and its 80-110kph time of just 3.7 seconds is only fractionally slower than the 202kW Diesel S model. Maximum speed is 240kph.
And these great performance leaps are achieved with combined average fuel consumption in both models of 6.8l/100km – an improvement on the 2.7-litre engine of over 10 percent – and a CO2 emissions rating of only 179g/km.
For Jaguar and the new 2010 XF, the high-performance diesel has truly arrived.
Customers will be able to order the latest 3.0-litre V6 petrol, new 202kW, 600Nm 3.0-litre V6 Diesel S and naturally aspirated V8 petrol versions of the new XF range from January 2009. The 177kW, 500Nm V6 Diesel and 375kW supercharged V8 XFR will be available to order from February 2009.
Jaguar Cars managing director Mike O’Driscoll confirms:
“Whether it is the craftsmanship of the Portfolio model, the purposeful, performance-oriented styling and engineering of the new XFR, or the excellent blend of economy and power in our new diesel versions, every new XF delivers outstanding levels of luxury, dynamics and technology.”
- All-new V8 petrol and new V6 turbodiesel powertrains. The new XFR introduces the 375kW supercharged 5.0-litre AJ-V8 Gen III petrol engine – replacing the 4.2-litre supercharged V8 engine and adding other dynamic advances to create the quickest and most sporty XF yet
- The new XFR’s driving dynamics are underpinned by the introduction to the XF range of Active Differential Control (electronically controlled rear differential) and Adaptive Dynamics, the latest in computer-controlled suspension
- The new XF engine range also includes a naturally aspirated 283kW version of the new AJ-V8 Gen III petrol engine, replacing the 4.2-litre V8
- The revised XF range introduces the all-new 3.0-litre AJ-V6 Gen III diesel engine with twin parallel sequential turbochargers. Available in two versions, the engine offers 283kW with 500Nm, or in the Diesel S 202kW with 600Nm of torque, for huge flexibility with exceptional refinement. Compared to the previous 2.7-litre diesel, the new 202kW, 600Nm version reduces the XF’s 0-100kph time by an astonishing 23 percent, to just 6.4 seconds
- Every new engine for the XF range combines enhanced power and performance with superb drivability and highly competitive fuel economy and CO2 emissions figures – both diesel versions produce just 179g/km
- Across the board the new petrol and diesel engines offer power gains of up to 33 percent, torque gains of up to 38 percent, and fuel economy improvements. Both diesel engines deliver combined average fuel consumption of 6.8l/100km – an improvement on the 2.7-litre engine of nearly 12 percent
- The new XFR is distinguished by unique exterior and interior design features including unique 20-inch alloy wheels, revised bumpers and lower front air intakes, sill extensions, bonnet louvres and grilles, four tailpipes and a boot-lid spoiler
- The new XF Portfolio (in South Africa available by special order only) offers a luxury-biased alternative to the performance focused XFR, with the emphasis on bespoke details and exceptional craftsmanship including 16-way and 12-way adjustable actively ventilated heated and cooled front seats, contrast stitching on leather trim and a wider choice of veneers and trim colours
- Subtle external detail enhancements and new alloy wheel choices confirm the XF family’s evolution while blending seamlessly into the XF’s acclaimed new design language
- The full XF family now includes four trim and equipment levels – XF Luxury, Premium Luxury, Portfolio (in South Africa available by special order only) and XFR – and a total of five engine options
THE NEW 2010 XF
INTRODUCING THE NEW XFR AND THE NEW XF 3.0 V6 DIESEL S
When the first customers took delivery of their XF in March of 2008, they became the owner of a Jaguar that fuses sports car styling and performance with the refinement, features and space of a premium luxury saloon.
And although launched only a year ago, the XF has already collected an astonishing number of accolades, such as the What Car? Car of the Year in the UK, Popular Mechanics Best Luxury Vehicle and a privileged place on Car and Driver’s 10 Best Cars for 2009 in the US.
These honours are recognition of a car that combines innovation with leading edge design. Contemporary, individual and beautifully crafted, with excellent performance, refined powertrains and outstanding driving dynamics, the XF pushes the boundaries of Jaguar’s new design language.
It is also an unequivocally modern car that makes intelligent use of advanced technology and as a result has accelerated Jaguar’s acceptance to a much broader audience of luxury car customers.
Now Jaguar has moved the game on again. The highlights of the new 2010 model year XF, (available to South African customers from May 2009, dependent on model) are a new flagship – the stunning, supercharged XFR – two all-new V8 petrol engines, new V6 diesel engines and significant trim and specification changes.
The new XFR is the first XF to carry the ‘R’ badge, which defines Jaguar’s most performance-focused models.
Powered by an all-new supercharged 5.0-litre V8 engine developing 375kW and 625Nm of torque, the XFR is huge step forward for the XF. Compared to its supercharged 4.2-litre V8 predecessor, power has increased by a remarkable 23 percent and torque has increased by 12 percent.
This mighty new engine gives the XFR a 0-100kph time of only 4.9 seconds. More relevant in everyday driving, an excellent indicator of the XFR’s great flexibility is the time it takes to accelerate from 80-110kph – just 1.9 seconds.
Better still, these improvements are achieved without penalty compared to the previous generation of supercharged engine: the combined fuel economy and CO2 emissions figures are even better than the 4.2-litre engine it replaces. The new engine also meets EU Stage 5 emissions regulations.
The new XFR demonstrates Jaguar’s commitment to delivering exhilarating performance and outstanding dynamics for the driving enthusiast – the ‘Fast’ part of the Jaguar ethos of designing, engineering and manufacturing ‘Beautiful, Fast Cars’. And it is Jaguar Design Director Ian Callum and his team that have worked to finesse the ‘Beautiful’:
“Every XF is distinguished by its dramatic styling, flowing lines and coupe-like appearance but the new XFR is the ultimate sporting execution of that design language. It has superb proportions, better than any of its rivals, with a wide track and confident stance.”
Ian Callum, Director of Design, Jaguar Cars
The enhanced exterior styling of the XFR moves those sporting credentials on even further, to deliver the ultimate expression of Jaguar’s new saloon car design language – carrying a number of design cues that are intrinsic to Jaguar’s ‘R’ car philosophy. Its unique new front-end design has a larger lower grille with new black-finished mesh, plus chrome outboard air intakes.
The upper mesh grille retains XF’s bright finish, while the XFR’s unique bonnet carries bold and distinctive louvres, like those on the XKR.
XFR also features bold new sill extensions, while the rear bumper adds a unique body-coloured lower valance panel incorporating the ‘R’ signature of four large, bright-finished tail pipes.
The new bootlid spoiler not only makes the XFR instantly recognisable but also has a significant aerodynamic effect. Developed in conjunction with the new front bumper design, it further improves XFR’s front/rear lift balance, and therefore its high-speed stability. A new exterior mirror design also offers aerodynamic improvements, plus improved functionality with its LED side repeaters.
The XFR’s sporting character is clearly apparent in the 20-inch Nevis alloy wheels that are fitted as standard – the only car in its class to offer this size of wheel as standard specification.
Those twin-seven-spoke wheels bear the wording ‘Jaguar Supercharged’ embossed around their centres, and are wrapped tightly around silver-grey brake callipers, which carry the evocative ‘R’ logo. The R badge also appears on the right-hand side of the boot lid drop panel, to complete the XFR’s external visual identity.
The XFR is offered with a limited colour palette. Just eight exterior colours are available: Ultimate Black, Indigo, Liquid Silver, Lunar Grey, Porcelain, Botanical Green, Kyanite Blue and Salsa. All except Salsa and Porcelain are metallic colours and, within the XF range, Salsa and Kyanite Blue are unique to XFR.
For each colour, too, as across the rest of the XF range, Jaguar suggests a ‘Designer’s Choice’ of the leather trim colours that go best with each body colour and with the Warm Charcoal upper facia colour that is standard on every XFR.
The interior design theme is modern and individual. The cabin environment is uniquely Jaguar and in XFR more unique details hint at the car’s performance. It features a full soft grain leather interior as standard, with four colours choices – Warm Charcoal, Warm Charcoal/Red Zone, Warm Charcoal/London Tan, and Ivory; and a new Dark Oak veneer is the standard finish for the XFR’s wood-trimmed areas.
Its new 18×14-way adjustable sports seats have newly shaped electrically adjustable squab bolsters for significantly improved support at higher cornering speeds. Each XFR seat, front and rear, has the ‘R’ logo embossed on its squab and the front seats have leather seat-back map pockets. The lower steering wheel spoke is also leather trimmed, with its own ‘R’ logo.
The fascia introduces a unique, dark mesh aluminium finish, and another discreet ‘R’ badge on the passenger side of the instrument panel. The speedometer and tachometer have the unique sporting signature of red dial pointers, and carry the ‘Supercharged’ motif. And at start-up, the ‘R’ logo appears on the Touch-screen as part of the XFR ‘driver handshake’ sequence.
The XF is a car packed with user-friendly technologies. Features that distinguish include full shift-by-wire transmission controlled by the JaguarDrive Selector™, plus cruise control with Automatic Speed Limiter.
The optional radar-based Blind Spot Monitor warns the driver when there is another vehicle nearby in a different lane, and XF’s optional Rear Camera Parking Aid provides a clear view of the area behind the car on the colour Touch-screen while reversing. That is now upgraded with on-screen guidance lines that move according to steering wheel angle to indicate the area into which the car will reverse.
A significant number of enhancements have been made above and beyond the impressive features in the 2008 XF. The new XF’s navigation system now includes turn-by-turn instructions in the message centre, clearly indicating the route with a combination of junction icon, distance countdown details, and the street or road name. For diesel models, Jaguar’s new diesel mis-fuelling prevention device is fitted as standard – and an Acoustic Laminated Windscreen is a new standard feature on every XF.
Comfort, luxury and craftsmanship continue to be XF trademarks. Multi-way adjustable power seats are standard on all models, with the option of actively ventilated heated and cooled seats and a heated steering wheel. XF’s impressive range of audio options is topped by an exclusive optional sound system, the Bowers & Wilkins 440W system with Dolby® ProLogic® II surround sound and no fewer than 14 speakers. And XF’s Portable Audio Interface allows simple, direct connection of iPod® and MP3 players with full control via the Touch-screen or steering wheel-mounted controls.
JaguarSense™ allows touch-sensitive operation for the glovebox release and interior lights – and those lights feature soft, Phosphor Blue interior mood lighting with Halo illumination around key switch packs to ensure easy and positive night-time operation. The new XF also adds Digital Radio and Digital/Analogue Hybrid TV reception as options – the Digital Radio options now include DAB radio across Europe and Sirius Satellite or HD radio options for North America.
THE ALL-NEW AJ-V8 GEN III ENGINES
The supercharged 5.0-litre V8 that powers the new XFR is Jaguar’s new flagship engine, but it is only half of the petrol engine story – a naturally-aspirated version of the all-new engine brings additional advanced technologies and performance to other models in the XF range.
AJ-V8 Gen III engine technology at a glance
- New AJ-V8 Gen III engines are more compact, more efficient and much more powerful
- Two versions of the all-new 5.0-litre V8 engine:
- 283kW, 515Nm, 264g/km CO2, 11.1 l/100km combined fuel economy (naturally aspirated – the Gen III S)
- 375kW, 625Nm, 292g/km CO2, 22.5mpg (12.5 l/100km) combined fuel economy (supercharged – the Gen III R)
- Conforms to EU 5 and US ULEV2 emissions regulations
- High efficiency, sixth-generation twin vortex supercharger on Gen III S engine
- Central spray-guided direct-injection increases efficiency and torque
- Torque-actuated variable camshaft timing on all four camshafts for improved response and efficiency
- Cam profile switching in naturally aspirated engine
- Variable-geometry inlet manifold on naturally aspirated engine further increases low and high-end torque
- Low-friction design optimises fuel consumption
- 24,000-kilometre service intervals compared to 16,000-kilometre intervals on 4.2-litre models
Generations of powerful yet refined engines have played a crucial role over the years in establishing the unique character of Jaguar cars. Now, two all-new direct-injection petrol engines continue that tradition for the XF, delivering increased power and torque with improved emissions and fuel consumption. The first is the all-new 375kW, 5.0-litre AJ-V8 Gen III R supercharged V8 petrol, also available in naturally aspirated form producing 283kW.
Light, robust and very strong
The new V8 engines are built around a stiff, all-new, aluminium block with cast-in iron liners and cross-bolted main bearing caps to reduce noise, vibration and harshness. For the first time at Jaguar the blocks are high-pressure die-cast, providing a superior finish and greater dimensional accuracy.
The engines use aluminium heads, with four valves per cylinder and strong, spheroidal-graphite cast-iron crankshafts and forged steel connecting rods. The cylinder heads for the first time are specified with a secondary (recycled) aluminium alloy thus reducing the environmental impact of manufacturing the new engine.
The new 5.0-litre direct-injection petrol engines are more compact than their predecessors. Overall engine length has been reduced by 24mm by relocation of the oil pump within the engine architecture.
This length reduction improves engine bay packaging in support of enhanced safety cell performance while ensuring overall engine weight is virtually unchanged.
Jaguar’s all-new petrol V8s have been designed in-house, using the expertise of powertrain engineers at Jaguar’s advanced research and development centre at Whitley, Coventry, UK. Malcolm Sandford, Engine Group Chief Engineer, explains the concept behind the project:
“The emphasis was on delivering efficiency, superior dynamic response and highly accessible low-end torque suited to real-world driving, without compromising power at higher engine speeds.”
The results are clear to see. Performance has been increased by 29 percent and 23 percent (64 and 69kW) on both naturally aspirated and supercharged engines yet both the naturally aspirated and supercharged engines meet EU 5 and US ULEV2 emissions regulations. Despite the significant increases in power, CO2 emissions of the naturally aspirated engine are the same as the outgoing 4.2-litre V8, and the supercharged engine produces two percent less CO2 than its predecessor.
Industry-first direct injection – power with economy
One of the key features of the new petrol engines is an industry-first, centrally-mounted, multi-hole, spray-guided fuel injection system, delivering fuel at a pressure of up to 150bar directly to the cylinder. This substantially contributes to improved low-speed, dynamic response.
The positioning of the injectors ensures fuel is precisely delivered to the centre of the combustion chamber, maximising air-fuel mixing, and improving combustion control. Fuel is delivered via twin, high-pressure fuel pumps that are driven via an auxiliary shaft in the all-new engine block.
The charge-cooling effects of the direct-injection fuel system have allowed the compression ratio of the naturally aspirated engine to be raised to 11.5:1, further improving the engine economy. The supercharged engine also benefits from an increase from 9.1:1 on the previous 4.2-litre version to 9.5:1.
During the engine warm-up phase, the combustion system employs multiple injection mode strategies to deliver 50 percent more heat for fast catalyst warm-up and substantially reduced emissions.
Torque-actuated Variable Camshaft Timing improves efficiency
A new type of variable camshaft timing system (VCT) introduces another new technology. The four VCT units are activated by the positive and negative torques generated by opening and closing the intake and exhaust valves, instead of by oil pressure. This has allowed the engine oil pump to be reduced in size, saving energy and reducing fuel consumption.
VCT units work independently on all four camshafts with 62 degrees of authority on the inlet cams and 50 degrees of authority on the exhaust cams. Timing is optimised by the engine control unit for torque, power and economy at every point in the engine’s speed range.
The response rate of the new VCT units is up to three times faster than before, with actuation rates in excess of 150 degrees per second. This delivers a more immediate engine response to the driver’s demand.
The naturally aspirated engine is also equipped with camshaft profile switching (CPS) on the inlet camshaft. Depending on the engine’s running conditions and the demands of the driver, the CPS will switch between a profile that is ideal for low-speed driving, and another which gives increased valve lift for high performance.
Variable Inlet Manifold optimises torque through the rev range
A new variable inlet manifold (VIM) can vary the length of its eight inlet tracts to optimise power and torque throughout the rev range on the naturally aspirated engine. Vacuum-operated actuators open valves to select a longer, 680mm inlet tract at low revs, increasing the rate of both the airflow and the engine torque.
As the revs climb beyond 4700rpm, the actuators select a shorter, 350mm path allowing a greater volume of air into the engine to optimise engine power. The actuator position is optimised by the engine control unit for improved torque throughout the engine speed range.
Reducing friction – something for nothing
Minimising internal friction is key to improving fuel consumption and CO2 emissions, and as such was a key aim when it came to the design of the engines. As a result, the new Jaguar AJ-V8 Gen III engines achieve another best in class, setting a new industry benchmark for cranktrain efficiency.
All engine bearings were the subject of an extensive optimisation programme, reducing friction without compromising reliability. Diamond-Like Carbon Coating (DLC) has been used to reduce friction on the fuel pump tappets and a solid film lubricant has been used to coat the piston skirts.
Jaguar has developed a unique, intelligent oil-pump pressure relief valve (PRV) which senses oil pressure deep in the engine’s oil galleries to control the oil pump delivery. As a result, oil pump frictional losses are reduced during the warm-up period.
New engine oil has a lower viscosity, contributing to an extension in service intervals from 16,000 kilometre to 24,000 kilometre or 12 months. Both V8 engines are now fitted with an electronic oil level sensor feature for added peace of mind.
Unique, Jaguar sound quality
Sound quality is a key characteristic of all Jaguars and is one particular aspect that customers relish. With that in mind, Jaguar engineers have deliberately accentuated the acoustic feedback into the cabin in order to further increase driving pleasure.
The XFR has received special attention to deliver the required V8 intake sound character commonly absent on supercharged engines. Intake manifold pressure pulsations are fed into an acoustic filter at the rear of the engine that is tuned to “tenor C”, with the output from the filter ducted into the cabin.
The filter is controlled by the engine management system which allows the acoustics to enter the cabin only under certain conditions, such as when the engine is accelerating hard, thus maintaining the desired sound quality at all times.
New supercharger – more for less
A sixth-generation, twin vortex system (TVS) supercharger is fitted to the XFR’s 375kW engine. It is a compact Roots-type unit, feeding air through twin intercoolers, which in turn are water-cooled by their own discreet cooling circuit.
The high helix rotor design improves the supercharger thermodynamic efficiency by 16 percent. It also improves noise quality to the point where the unit is now virtually inaudible (making supercharger whine a thing of the past). The intercoolers reduce the temperature of the pressurised intake-air and so optimise power and efficiency.
The new air intake has been radically redesigned compared to the previous V8. The intake air path is a direct feed to the supercharger inlet from the centrally mounted front throttle body. Air is delivered through twin air boxes, which reduce flow loss and further increase efficiency.
Mechanically, the new supercharger and its intercoolers are efficiently packaged in the ‘V’ of the engine to deliver a low overall engine height in support of pedestrian safety requirements.
Advanced six-speed transmissions
The all-new 5.0-litre AJ-V8 Gen III and the 3.0-litre AJ-V6 D Gen III engines transmit power through an enhanced version of Jaguar’s acclaimed ZF 6HP28 electronically controlled, six-speed transmission. Additional clutch plates and an uprated torque converter have been added for the supercharged V8 to facilitate the extra power.
The transmission has a fully-adaptive shift system which delivers extremely smooth gear changes and optimises performance and economy at all times. It also continually adapts to suit driving style, which can vary from sporting to more economical.
The ‘mechatronic’ control module incorporated inside the transmission includes the software for the semi-automatic Jaguar Sequential ShiftTM function, selected when the driver operates either of the two steering-wheel paddles.
The high levels of torque produced by the new engines make it possible for the torque converter lock-up feature of the transmission to be used even at low speeds, without slip. This approach provides an additional fuel consumption saving, contributing to the official combined fuel economy of 12.5 l/100km in the XFR and 11.1 l/100km in the naturally aspirated V8-powered XF.
The advanced design of the transmission includes a torsional damper to absorb firing impulses from the engine, further smoothing the driveline. The transmission is designed to be maintenance-free and the fluid is ‘filled-for-life.’
Stunning performance and dynamism
The headline advances of Jaguar’s new engines are hugely significant and impressive. They take Jaguar’s philosophy of ‘intelligent power’ to another new level and that means instant responses, seamless power and smooth, refined performance with no compromise to fuel efficiency – all thanks to intelligent use of the most advanced technologies. And, of course, in XFR guise, it makes for the quickest XF yet.
Mike Cross, Vehicle Integrity Chief Engineer, explains the significance of the powertrain changes in the 2010 XF range:
“Instant response, seamless power delivery and smooth refined performance characterise the new XF diesel and V8 petrol engines. The awesome 375kW supercharged V8 engine in the XFR delivers thrilling performance to satisfy the most demanding drivers. Allied to a class-leading automatic transmission featuring Jaguar’s lightning-quick Sequential Shift system and advanced technologies such as the new Active Differential Control and Adaptive Dynamics, the XFR offers an exhilarating driving experience, yet one that is still accessible to everyone.”
In line with the additional performance, XFR adopts the largest brakes fitted to the XF range, with 380mm diameter internally ventilated front discs. XFR’s unique 20-inch wheels and tyres were specifically chosen to enhance the dynamic character of the car, and in particular to optimise wet weather grip.
Jaguar’s Emergency Brake Assist is standard on XF and Adaptive Cruise Control (ACC) is now available as an option all models. Advanced Emergency Brake Assist is a new attribute of the ACC system on the new 3.0 V6 diesel and 5.0 V8 petrol models; it uses the ACC radar to calculate distance from and speed of approach to the vehicle ahead and pre-charges the brake-line pressure to minimise impact speed if a collision is predicted – as well as giving an audible warning to the driver.
To improve handling and steering responses, the XFR is fitted with a ‘fast ratio’ steering rack, and additionally benefits from the further improved front-to-rear aerodynamic balance offered by a new boot lid spoiler and deeper front bumper.
This is a significant gain as XF’s lift balance was already best in class, and its low overall aerodynamic drag coefficient of only 0.29Cd contributes to both low wind noise and inherent high-speed stability.
The XF’s body shell is already extremely stiff – in fact the stiffest in its class. This is key to the XF delivering superb ride and handling based on taut body control and precise, responsive steering. The bodyshell for the new 10 Model Year XF is even stiffer, thanks to a new rear subframe and the adoption of a boot cross-brace that was previously only fitted to the XF SV8 model.
Latest computer-controlled suspension and differential
The biggest changes in chassis dynamics for the XFR, however, come from two new advanced technologies, Adaptive Dynamics and Active Differential Control – which are both incorporated as standard.
Active Differential Control (ADC) with traction-only functionality and handling functionality is an electronically controlled alternative to the traditional, wholly mechanical differential, offering more subtle control strategies.
ADC can vary its locking torque (and therefore the proportion of torque to each driven wheel) depending on surface conditions and power applied. Its control strategies optimise traction at each wheel, improving acceleration on low-grip surfaces while also enhancing cornering ability.
ADC has no adverse effect on either refinement or stability – where the traditional, mechanical differential can compromise stability under hard applications of power, demanding more corrective input from the driver.
Whereas a mechanical differential is permanently active, the XFR’s new ADC system is switched off when not required, so unlike the mechanical alternative, it does not risk undesirable understeer, and creates no issues with NVH at low speeds.
The differential is operated by an internal electric motor and ‘ball-and-ramp’ mechanism, and contains a multiplate clutch, which transmits or ‘vectors’ torque to the wheel with most grip.
The multi-plate clutch assembly is designed to prevent excessive differential slip, but differs fundamentally from a conventional traction control which uses the brakes to counteract slip after it has occurred.
Adaptive Dynamics is a highly sophisticated active damping system which automatically adjusts suspension damper settings to suit both road conditions and the way in which the car is being driven.
By removing the need for compromise between a fixed, softer setting for ride comfort and a fixed, firmer setting for tauter body control and handling, Adaptive Dynamics allows the balance between ride and handling to be optimised whatever the circumstances.
Unlike earlier systems with only a small number of steps in the damper settings, it offers a progressively variable damping strategy between wide extremes, to deliver a comfortable but sporty ride with impressively sharp handling.
The three primary functions of Adaptive Dynamics are to control vertical movement, roll rate and pitch rate of the body.
It does this by analysing induced body motions one hundred times a second, and setting each damper to an appropriate level in order to maintain a constant and level body attitude, thereby optimising control without compromising ride.
Also one hundred times a second, it predicts the roll-rate due to steering inputs, and selectively increases damping forces to reduce that roll-rate – improving handling feel and driver confidence – as well as analysing fore and aft pitch rate due to throttle and braking inputs, and again varies damping forces to reduce pitch, further improving comfort and control.
Additionally, Adaptive Dynamics improves ride by monitoring wheel position five hundred times a second and automatically increasing damping rate as the suspension approaches the limits of its travel. Similarly, it controls wheel ‘hop’ by varying damping to move any wheel out of a natural bouncing frequency, again benefiting ride comfort, handling, and even grip.
XFR also features Handling Functionality, which is unique in this class. In conjunction with the DSC Off option and JaguarDrive Control™ with Dynamic Mode, this supplements all the advantages of Traction Only Functionality with a number of more driver-focused dynamic characteristics.
Dynamic Mode (which is standard on the new naturally aspirated 5.0-litre V8 petrol and new 3.0-litre V6 diesel models) modifies the throttle, stability and transmission parameters, and on XFR only it also modifies the Adaptive Dynamics responses.
The combination of ADC and Dynamic mode with DSC Off allows controllable power-on oversteer, and improves off-throttle stability, allowing quicker, more spirited cornering. It can also improve stability in situations such as an emergency lane-change manoeuvre at high speed and, in combination with DSC, reduce the brake interventions which the more enthusiastic driver might see as intrusive.
So, working with DSC, the TCS traction control system and ABS braking function, ADC can significantly improve overall vehicle performance, and provide even more precise driving feel. Together with its very high performance potential, which is what defines the new XFR as a perfect home for Jaguar’s ‘R’ philosophy, and the sportiest of all XF models.
State-of-the-art 3.0-litre V6 diesels
- Unique, parallel sequential twin-turbocharger system increases power, torque and response
- Increased torque and effortless performance
- AJ V6D Gen III Diesel version 177kW, 500Nm
- AJ V6D Gen III S Diesel S version 202kW, 600Nm
- 500Nm torque from standstill in 500 milliseconds
- The 177kW Diesel gives a 15 percent increase in power over the previous engine, a 15 percent increase in torque and a 10 percent reduction in CO2
- The 202kW Diesel S gives an astonishing 33 percent increase in power yet still achieves a 10 percent reduction in CO2. Both diesel versions emit just 179g/km
- Both diesel engines deliver combined average fuel consumption of 6.8l/100km – an improvement on the 2.7-litre engine of 10 percent.
- Conforms to EU5 emissions regulations using conventional exhaust after-treatment
- 2000bar, third-generation commonrail fuel-injection
- Minimised engine friction for greater efficiency
- Low radiated engine-noise
- 24,000 kilometre service intervals
Two all-new parallel sequential twin-turbo commonrail diesels, now at 3.0-litres capacity and producing either177kw or, for the Diesel S version, 202kW, are added to the XF engine range.
The new engines will cut Jaguar’s CO2 footprint while setting new benchmarks in their respective classes. Both engines exemplify Jaguar’s reputation for innovation and engineering excellence; exhaustive attention to detail and the introduction of new cutting- edge technologies having produced powerplants of unparalleled performance and efficiency.
The 202kW, 600Nm engine radically improves the XF’s acceleration and top speed, with the 0-100kph time reduced to just 5.4 seconds, and an electronically governed top speed of 250kph. The 177kW, 500Nm version also improves on the previous 2.7-litre model with a 0-100kph time of 7.1 seconds (only fractionally slower than the 202kW Diesel S model) and a top speed of 240kph.
“The new parallel sequential turbocharger system on our new V6 diesels delivers V8 levels of performance from very low revs. The engines can deliver 500Nm torque from standstill in just 500 milliseconds, which is a remarkable achievement. It’s a power unit that delivers superb flexibility and remarkably low fuel consumption and emissions, while building on the refinement that has become a trademark of our Jaguar diesel engines.” Group Chief Engineer, Powertrain, Ron Lee.”
Drawing on the considerable experience gained in designing the original, acclaimed 2.7-litre engine, the new 3.0-litre V6 diesels demonstrate that it is possible to deliver improved performance, while reducing CO2 emissions.
In the XF, the new engine produces 10 percent less CO2 than the 2.7-litre while power has increased by 33 percent in Diesel S guise. As well as tackling CO2, the new 3.0-litre meets the forthcoming EU 5 regulations, due to come into force at the start of 2011 in the European Union.
And these great performance leaps are achieved with combined average fuel consumption in both models of 6.8l/100km – an improvement on the 2.7-litre engine of over 10 percent.
Twin-turbos – maximum efficiency, instant response
A key feature of the new engine is the unique, parallel sequential turbocharger system, the first of its type to be fitted to a V-engine anywhere in the world.
Delivering high torque throughout the entire engine rev range, improved throttle response and low CO2 emissions, the twin-turbochargers work sequentially to deliver unrivalled response and best-in-class torque at low engine speeds, while packing a huge punch at higher engine speeds.
For most day-to-day driving, including motorway cruising, a responsive, variable-geometry primary turbocharger does all the work while the smaller, fixed-geometry, secondary turbo is dormant, saving energy and improving efficiency.
When the engine revs climb above 2800rpm, the secondary turbo is brought on line within 300 milliseconds, smoothly and seamlessly boosting the engine output with no discernible turbo-lag or power-step.
Driving a turbocharger requires pressure from the exhaust, creating pumping losses in the engine and increasing fuel consumption. To alleviate this, valves under the control of the engine management system isolate the secondary turbocharger both from the exhaust stream and the engine inlet tract when it is not required.
Some twin-turbo systems rely on a smaller turbo for primary use, only using a larger turbo when higher power is required. Though effective, this has the disadvantage of raised exhaust pressure and increased pumping losses. The Jaguar system uses a larger, variable-geometry turbocharger more of the time, which not only reduces pumping losses, but also improves fuel consumption and CO2 emissions.
Jaguar engineers have particularly focussed on the issue of turbocharger ‘lag’ at low engine speeds. The new AJ-V6D Gen III 3.0-litre diesel significantly out-performs its rivals by delivering 500Nm of torque in only 500 milliseconds from idle.
A new commonrail fuel-injection system delivers up to five injections on each cycle at a pressure of 2000bar. Each injector tip is perforated by seven holes through which finely atomised fuel is sprayed into the cylinders.
The high-pressure injection increases power, improves economy and reduces both CO2 and particulate emissions. New, third-generation high-speed piezo injectors allow up to five precise injection events during each combustion cycle, minimising engine combustion noise.
Piezo crystal ‘packs’ operate each injector by expanding when an electric current is passed through them. They react virtually instantaneously but can make a distinctive click when fired, which can add to diesel engine noise at idle. The crystals in Jaguar’s new injectors are fitted nearer the tip meaning they are mounted deeper inside the engine providing better sound insulation and quieter operation.
Another new feature of the third-generation fuel-injection system is the metering mode. Traditional diesel commonrail fuel pumps oversupply the injectors, with the surplus being returned to the fuel tank.
During this process, fuel temperature increases and cooling it again consumes considerable amounts of energy. In metering mode, the pump delivers fuel to the injectors only at the rate required. Consequentially, there is no rise in fuel temperature and no wasted energy.
Compact and very clean
The two cylinder heads, with four valves per cylinder, are made from aluminium and the cylinder block is made from compact graphite iron (CGI). The higher tensile strength of CGI makes it possible to cast a smaller block; some 80mm shorter than a conventional ‘grey’ cast iron equivalent.
The new, water-cooled, exhaust gas recirculation system (EGR), important for reducing pumping losses and emissions of NOx (nitrite/nitrate)
in a diesel engine, is more efficient and consumes less power than the 2.7-litre unit. The valves that allow exhaust gas into the system are located on the ‘hot side’ of the engine nearest the exhaust manifolds; these valves never cool while the engine is running, so there is no condensation of combustion deposits which occurs on engines fitted with ‘cold side’ valves, hence the EGR system always works at maximum efficiency. Since the EGR cooling is so effective, exhaust gasses can bypass the system and return to the exhaust pipes, allowing faster engine warm-up from start-up and reducing emissions still further.
EU5 emissions regulations have been achieved ahead of the 2011 European Union legislative timetable using conventional diesel oxidation catalysts and diesel particulate filters (DPFs). NOX levels are reduced sufficiently at source through the combustion system design, the addition of the new commonrail injection system and the new EGR system with by-pass.
As a result, specialised NOX exhaust after-treatment is unnecessary, avoiding a potential cost and the need to use additional precious metals in the exhaust system.
Remarkably quiet for a diesel
The CGI cylinder block and new piezo injector design reduce combustion noise in the new engine. Multiple, precise injections of fuel on the combustion stroke also reduce combustion noise and all engine covers including camshaft covers, front covers and the sump have been optimised to subdue radiated noise.
Engine enclosures have been ribbed to minimise radiated noise and the sump pan is manufactured from sound deadening steel (SDS), comprising a polymer layer sandwiched between two layers of steel.
Internal friction, a major contributor to unnecessary fuel consumption, has been addressed by careful optimisation of the crankshaft, valves and pistons. All these features combine to make the new Jaguar AJ V6D Gen III engines amongst the quietest premium diesels on the market today.
A major step forward
With its parallel sequential turbocharger system, third-generation common rail fuel injection system and fully optimised EGR system, the new 3.0-litre AJ-V6D Gen III diesel sets new class standards when it comes to power, response and refinement in the premium diesel segment.
Jaguar Programmes Director Mick Mohan said: “The fact that we’ve reduced CO2 emissions to 179g/km with this engine highlights the class-leading fuel economy customers can expect, combined with fantastic performance. It’s another great example of Jaguar delivering unrivalled performance while at the same time taking the level of refinement in diesel engines to a whole new level.”
XF Portfolio – taking luxury a little further
An XF Portfolio (available in South Africa by order only) is about taking the details that define luxury a little further.
Every XF is designed to make its owner feel special. Every XF combines the practical appeal of refinement and space with the emotional appeal of luxurious interiors, intelligently chosen features and exceptional craftsmanship.
The new Portfolio option offers the most luxurious XF specification, and is available with the naturally aspirated version of the new 5.0-litre petrol V8 and 600Nm, of the new 3.0-litre V6 diesel engines.
As well as offering all the features of the Premium Luxury level, the Portfolio is subtly distinguished by its new 19-inch Artura alloy wheels. Inside, it adds 16-way by 12-way actively ventilated heated and cooled front seats, with leather seat back map pockets, and it introduces a luxurious Suedecloth premium headlining.
On the door top-rolls and instrument panel, the Portfolio adds the further craftsmanship touch of contrast colour twin-needle stitching, and underfoot it adds premium carpet mats with contrast edge binding and embroidered Jaguar logos.
The Portfolio also adds a wider choice of veneers – four in total – and an extended colour palette, all giving maximum customer choice and opportunity for personalisation. The five interior colour combinations include two that are unique to the Portfolio – all of them featuring that distinctive contrast stitching. And the Portfolio choice includes four different veneer options including a new unique Figured Ebony veneer.
Beyond the unique performance and luxury alternatives of the XFR and Portfolio models, the new XF also offers distinctive new identifying details, including new alloy wheel styles. The 20-inch Nevis wheel is unique to XFR, while the new 19-inch Artura wheel is available in two optional finishes, depending on market – chromed, as an option in North America, or painted as an option for South Africa.
The use of intelligent technologies on the new XF contribute to extended service intervals (up to 26,000 kilometre for new 3.0-litre V6 diesel models and 24,000 kilometre for 5.0 V8 petrol ones), now monitored by a new Service Interval Indicator. These new engines offer dipstick-free monitoring with oil level sensing, and XF also now offers a Brake Pad Wear function.
So more than ever, the new XF, XF Portfolio and XFR challenge the rules, delivering that unique Jaguar personality summed up in the two words: ‘Sporting Luxury’. The new range offers a superb blend of performance, value for money and contemporary desirability, which means Jaguar’s acclaimed XF has now moved even further ahead of its rivals in the sports saloon market.