4.0T FSI Alert: Audi's Next-Gen Wunder Engine Revealed in Bentley Press Release
by, 09-09-2010 at 01:00 AM (11777 Views)
There've been any number of rumors about the engine that will power Audi's upcoming S and RS variants. We've read everything from V10 biturbo to high-rev V8 in the mags but at the end of the day we're keeping our money on the biturbo 4.0T FSI to motivate the S6, S7, S8 (likely more as 4.2 is phased out) and likely RS variants of each will be a biturbo 4.0T. An extremely senior source in Germany mentioned 4.0T to us a while back and we've been perking our ears at its mention ever since. Of course, mention has always been over a cocktail or between bites of this or that. It's never been official... until now.
Bentley has released photos and details this week of its new Continental GT coupe. Near as we can tell the Bentley coupe will stay (for now) on its steel D chassis with a significant (think B6 to B7 evolution) product improvement. With the A8L's W12 bumping from 6.0 to 6.3 liters displacement and adding FSI we were already curious how an updated biturbo version would work under the bonnet of the cars from Crewe though we were pleasantly surprised to also find confirmation of the 4.0T under the press release's engine detail report.
Below we've posted portions of the Bentley press release. In bold you'll find the limited info on the 4.0T, confirmed for the Continental GT for late 2011.
Crewe, England - For Crewe’s design and engineering teams, the new Continental GT coupe is an opportunity to set a bold and exciting direction for one of Bentley’s most revered names – the Continental. The seminal and highly successful Continental GT introduced in 2003 represented the first step in Bentley’s renaissance and defined a whole new market segment. It was a luxury GT offering excellent usability that remained true to the Bentley grand touring spirit.
A beautifully sculptured new body gives the GT coupe an even crisper, more defined appearance. The contemporary interior offers new levels of cabin design, comfort and hand-crafted luxury. The seats, for example, provide even greater support and rear leg-room; a sweeping dashboard even more style and modernity. The new touchscreen infotainment system features state-of-the-art navigation, Google Maps and entertainment while the latest Balanced Mode Radiator speaker technology and Dirac Dimensions™ digital sound processing deliver enhanced audio quality.
Bentley’s acclaimed 6-litre, 12-cylinder, twin-turbocharged powertrain now has a raised power output of 575PS (567bhp/423kW) and 700Nm (516lb ft) of torque and this is mated to a new Quickshift transmission which enables double downshifts. Thanks to advanced FlexFuel technology it can also run on both standard unleaded petrol (gasoline) and sustainable bioethanol (up to E85) or any mix of the two.
In late 2011 an all-new, high-output 8-cylinder engine will also be available to order. This advanced power unit will deliver a 40 percent reduction in emissions compared with the W12 engine and will offer a class-leading CO2 emissions-to-power ratio with Bentley levels of performance and refinement.
Both engines are coupled to an all-wheel drive system with a sporty 40:60 rear-torque bias (compared with the 50:50 bias of the original Continental GT), minimising understeer during hard cornering and allowing the experienced driver to control the car’s line and balance via precise throttle control.
THE NEW CONTINENTAL GT COUPE – AT A GLANCE
Inspired by the iconic Bentleys of the past, Bentley’s design team under the leadership of Director of Design, Dirk van Braeckel, has created a thoroughly modern, sculptured body, built with advanced production technologies to ensure the highest standards of quality and body integrity.
Aluminium Super Forming technology is employed to create the front wings and the boot lid. This process heats the aluminium panels to nearly 500 degrees Celsius before shaping them by air pressure. By using a single sheet of aluminium, no seams or welding are required.
The latest body construction techniques deliver crisp, highly defined feature lines and form to every area of the exterior design. The familiar power lines and rear haunches – echoes of the original 1950s R-Type Continental – now have even sharper radii to create highly distinct surfaces, bringing the feel of a truly coachbuilt car to the new coupe.
The new GT is specified with 20-inch alloy wheels as standard, with, for the first time on the Continental family, the option to upgrade to 21-inch designs. Three styles of wheel are offered – a 20-inch five-spoke version and two 21-inch Elegant and split-rim Sports variations, which come in a variety of chromed and painted finishes.
MORE POWERFUL W12 AND NEW HIGH-OUTPUT, HIGH-EFFICIENCY V8
The Continental GT is set to have a choice of two very distinctive high-performance engines. In addition to the new 575PS version of Crewe’s renowned 6.0 litre W12 powertrain, a new high-output 4.0-litre V8 engine option will be introduced in late 2011.
The new 4.0-litre V8 engine honours Bentley’s environmental commitment to deliver a powertrain that achieves a 40 percent improvement in CO2 emissions. The new V8 is being designed specifically by Bentley’s engineers to deliver all the exhilarating power and torque synonymous with the marque. The new Crewe-built engine will also offer a class-leadingCO2 emissions-to-power ratio.
At launch, the new Continental GT coupe is powered by the latest evolution of Bentley’s acclaimed 12-cylinder, 6-litre twin-turbocharged engine, now calibrated to provide even greater performance, thanks to increases in power, torque and fuel efficiency.
Designed in a unique ‘W’ configuration, it is the most compact and technologically advanced 12-cylinder engine in the world. Four camshafts and 48 valves allow the engine to breathe effortlessly and help to generate the distinctive Bentley wave of torque. It is also capable of running on petrol (gasoline), E85 bioethanol or any mix of the two – all from a single tank.
In 2008, Bentley announced a far-reaching environmental programme that included a 15 percent improvement in powertrain efficiency and the adoption across the Bentley model range of FlexFuel technology by 2012. Bentley’s FlexFuel models are capable of delivering potential CO2 reductions of up to 70 percent on a ‘well-to-wheel’ basis – the measurement of CO2 released by a fuel from its production (well) through to its combustion or deployment (wheel).
To ensure that the power and torque generated remain constant (whatever the fuel) an advanced Fuel Quality Sensor continuously monitors the ratio of the fuels used. It then guides the Engine Control Unit to adjust the engine’s timing. This provides the seamless power delivery for which Bentley engines are renowned, and ensures there is no compromise on performance when using fuels that create lower CO2 emissions.
Further revisions to the new GT coupe’s engine include low friction, lightweight components which allow the W12-format engine to rev even more freely, while the latest engine management system and twin, low-inertia turbochargers are optimised to ensure minimal turbo lag.
Overall, the GT coupe is 65kg lighter than its predecessor thanks to reductions in all areas of the car from engine components through to new seats. With its power output raised by 15PS and torque by 50 Nm - to 575PS (567bhp/423kW) and 700Nm (516lb ft) – the result is a 6 percent improvement in the new GT’s power-to weight-ratio, making it capable of accelerating from zero to 60mph in just 4.4 seconds (0-100km/h in 4.6 seconds) with a top speed of 198mph (318km/h).
The increased power and torque are transmitted to the all-wheel drive system via an uprated six-speed Quickshift transmission, which halves shift times (to just 200 milliseconds). The revised gearbox also has the ability to deliver double downshifts (sixth to fourth gear, for example) and improves acceleration across the entire gear range. To cope with the additional power and torque, the planetary gear set of the six-speed ZF transmission is also strengthened.
Positive torque during downshifts is achieved through engine and gearbox electronic controller interaction for extra throttle and fuel injection during the overrun, replicating manual throttle ‘blips’ for precise rev matching . During transmission upshifts, fuel and ignition are cut momentarily to give faster mechanical shift times through torque reduction, also improving shift quality and durability.
“The W12’s extra power and torque and Quickshift transmission endow the new GT with instantly accessible supercar performance across the complete rev range. At the same time, Bentley’s pioneering use of FlexFuel technology underlines our ongoing environmental commitment.”
Brian Gush, Director, Chassis and Powertrain, Engineering
Type: 6-litre twin-turbocharged W12
Max Power: 567bhp / 423kW / 575PS @ 6000 rev/min
Max Torque: 700Nm / 516lb/ft @ 1700 rev/min
Top Speed: 198 mph (318 km/h)
0 – 60 mph: 4.4 secs (0 – 100 km/h: 4.6 secs)
0 – 100 mph: 10.2 secs (0 – 160 km/h: 10.2 secs)
30 – 50 mph (50 – 80 km/h): 1.7 secs
50 – 75 mph (80 – 120 km/h): 2.9 secs
FUEL CONSUMPTION (EU Cycle) *
Urban: 11.1 mpg (25.4 litres/100km)
Extra Urban: 24.9 mpg (11.4 litres/100km)
Combined: 17.1 mpg (16.5 litres/100km)
CO2 emissions: 384 g/km
FUEL CONSUMPTION (EPA Cycle) **
City Driving: 12.0 mpg (US)
Highway Driving: 19.0 mpg (US)
Combined: 14.0 mpg (US)
* Fuel consumption figures are provisional and subject to Type Approval. ** Fuel consumption figures are provisional and subject to EPA certification.
EU 5 and US LEV 11