Jaguar: nuovo AJV6 S/C e AJI4 T/C

beckervdo · 30 Aprile 2012

Debuttano i nuovi propulsori Jaguar V6 da 3.0 litri con compressore volumetrico e 4 cilindri 2.0 litri turbocompresso.

Il primo farà il debutto con la versione da 380 CV sulla nuoa Jaguar F-Type, mentre poi una versione depotenziata verrà utilizzata sulla XK,XF ed XJ.

Anche il nuovo 4 cilindri 2.0 litri Ford-Volvo (Ecoboost) verrà utilizzato per la gamma XF ed XJ al posto del vecchio AJV6-GEN III aspirato.

Press Release

JAGUAR ANNOUNCES FUTURE POWERTRAINS

AT-A-GLANCE
• Jaguar will bring to market globally two new forced-induction engines; a Supercharged 3.0L V6, and a Turbocharged 2.0L in-line four cylinder
• These engines will be offered as choices on a number of Jaguar models in the future
• The Supercharged 3.0L V6 draws on key technology used in the Jaguar 5-liter V8. This engine will be available in two states of tune: 380hp and 340hp
• The Turbocharged 2.0L I-4 produces 240hp
• The 380hp version of the Supercharged 3.0L V6 will be exclusively offered as one of the powerplants in the forthcoming Jaguar F-TYPE roadster
• Both engines will deliver their power through eight-speed automatic transmissions
• The V6 will be available with Jaguar's Intelligent Stop-Start system
Introduction

As Jaguar expands its product offerings in key global markets, it is introducing two additional engines; a new Supercharged 3.0-liter V6, and a Turbocharged 2.0-liter I4, which will be offered as choices on a number of models.

The first announced utilization of the 380hp Supercharged 3.0L V6 will be the
all-new Jaguar F-TYPE two seat roadster, coming in 2013. The Jaguar F-TYPE will focus uncompromisingly on delivering a rewarding drive experience

Adrian Hallmark, Global Brand Director, Jaguar Cars, said, "Jaguar currently has its strongest range of products for several decades. Our continued growth is dependent on two things; activating the awareness of the brand, and expanding our range to enable us to access new customers in both existing and emerging markets. The introduction of these two additional forced-induction engines is integral to this ambitious plan."

The new V6 engine has been developed by Jaguar from its existing 5-liter V8. This all aluminum alloy engine has received accolades from around the world in applications from luxury sedans to 186MPH convertibles. The V6 uses many key technologies from the V8 engine including direct injection, variable valve timing and aluminum construction. It will offer comparable levels of power and refinement to the naturally-aspirated version of the V8 engine, but with greater specific output and efficiency courtesy of supercharging.

The Turbocharged 2.0-liter I4 engine uses a range of technologies for power generation that belies its size. It produces 240hp thanks to the use of three key innovations; low-inertia turbocharging, direct fuel-injection and variable timing of both the intake and exhaust camshafts.

Ron Lee, Group Chief Engineer Powertrain, Jaguar Cars, said: "Both these new engines make intelligent use of forced-induction technology to produce high-specific output in an efficient way, while delivering the compelling combination of flexibility, refinement and driver reward that are integral attributes in all Jaguar engines."

Both engines will be mated to a new eight-speed automatic gearbox which offers a broad spread of ratios for an optimally balanced combination of performance, economy, and driver control. The 3.0 V6 S/C will also be available with Jaguar's Intelligent Stop-Start system.

Details: Supercharged 3.0-liter V6

This new engine finds it's bloodline from the current Jaguar V8 engine. The all-aluminum architecture of the V8 forms the basis of Jaguar's new supercharged V6. The engine will be presented in two states of tune depending on its application; the 380hp version and a 340hp version.

The new quad-cam V6 shares its all-aluminum construction with the V8, with the lightweight die-cast block supplemented with cross-bolted main bearing caps to increase rigidity and therefore refinement.
The valves themselves are subject to control by a dual independent variable cam timing (DIVCT) system which is activated by the positive and negative torques generated by the movement of the intake and exhaust valves. This variable timing system features actuation rates of more than 150 degrees per second throughout the rev range, to optimize power, torque and economy at all engine speeds.

This responsive and uninterrupted power delivery is made possible through the use of spray-guided direct injection (SGDI) which delivers precisely measured quantities of fuel directly into the center of the combustion chambers at pressures of up to 300 bar (2,176 PSI). The fuel is delivered several times during each combustion cycle, creating a more homogenous air-fuel mixture for cleaner and more efficient combustion.

To maximize combustion efficiency, these spark plugs are precisely oriented both in relation to the injector and within the combustion chamber. The compression ratio is also raised from 9.5:1 in the supercharged V8 to 10.5:1 in the supercharged V6, further improving fuel economy and reducing emissions.

Mounted in the 'V' of the engine is latest-generation Roots-type twin vortex supercharger, which is the key to achieving high-specific output and efficiency. A water-cooled intercooler reduces the temperature of the intake air to optimize power and efficiency. The supercharger boost control is electronically managed by new Bosch engine management software. The engine features a system of counter-rotating front and rear balancer weights which lend it the same smoothness and refinement characteristics as its larger V8 brother.

The V6 powertrain will be completed by a Jaguar-tuned ZF eight-speed automatic transmission. This transmission's large spread of ratios allows the engine's prodigious power to be fully exploited while optimizing economy and emissions.

Efficiency is also boosted by an Intelligent Stop-Start system which improves fuel consumption by up to seven per cent in European Test Cycle.* Utilizing a twin solenoid starter, the system is able to restart the engine in less time than it takes for the driver's foot to move from the brake to the accelerator. In engine stop-start 'change of mind' scenarios, it is able to reenergize the engine via rapidly reintroducing fuel into the cylinders.

Details: Turbocharged 2.0-liter I4

The introduction of the Turbocharged I4 to the Jaguar range brings greatly improved efficiency* with competitive power outputs. This new engine will be used in a longitudinal configuration and mated to the new ZF eight-speed automatic transmission that will be used on the V6. Again, this transmission's large spread of ratios maximizes both performance and efficiency. Producing 240hp at 5,500 rpm, this engine offers a highly flexible powerband.

With a weight of only 304 lbs (138kg), courtesy of compact dimensions and all-aluminum construction, it is the lightest engine ever fitted into a production Jaguar. This low mass improves dynamic agility while bringing further emissions and economy benefits.

The engine uses of a low-inertia turbocharger that enables it to produce its high-specific power and torque outputs. The turbocharger is fed via a lightweight thin-walled exhaust manifold which offers a shorter engine warm-up period and faster catalyst light-off. Chain-driven cams operate with variable timing on both the intake and exhaust valves to maximize the broad spread of torque.

The engine features specialized coatings on the piston rings and tappets in order to reduce unwanted internal friction. Efficiency and power gains are also realized using direct injection technology. Fuel is injected in precisely measured doses several times during each combustion cycle to ensure the most efficient possible burn with the maximum benefit in terms of power generation while maintaining the lowest possible fuel consumption and emissions.

Significant steps have been taken to ensure expected levels of smoothness and sophistication refinement including twin balancer shafts, active engine mounts, an acoustic engine cover, and the use of additional sound insulation.

TECHNICAL SPECIFICATIONS**

340hp Supercharged 3.0-liter V6
Engine type: V6, supercharged
Capacity (cc): 2,995
Bore/stroke (mm): 84.5/89
Peak power (HP@rpm): 340@6,500

380hp Supercharged 3.0-liter V6
Engine type: V6, supercharged
Capacity (cc): 2,995
Bore/stroke (mm): 84.5/89
Peak power (HP@rpm): 380@6,500

240hp Turbocharged 2.0-liter I4
Engine type: four-cylinder, in-line, turbocharged
Capacity (cc): 1999
Bore/stroke (mm): 87.5/83.1
Peak power (HP@rpm): 240@5500

*All figures estimated. EPA estimated ratings pending.

**Manufacturer's estimates. All figures correct at time of going to press. Figures will not be final at time of printing– they will be "target figures" subject to final confirmation.

Editor's notes
• The 3.0 V6 S/C and 2.0 Turbocharged I4 will join Jaguar's existing 5.0 liter V8 engines
• Full emissions and fuel economy data will follow upon final testing and certification
Clicca per allargare...

Via JaguarCars LTD
[video=youtube;peTtRLSvkaU]http://www.youtube.com/watch?v=peTtRLSvkaU[/video]

On the occassion of the Beijing Motor Show 2012, Jaguar has announced two new forced induction petrol engines for the 2013 model year; one of which is confirmed for the new F-Type sports car.First, the 3.0-liter V6 supercharged engine will be available in two levels of power output: 380HP (279kW / 375bhp) with 460Nm (623lb-ft) and 340HP (250kW / 335bhp) with 450Nm (609lb-ft). In the more powerful version, specific output is 127HP per liter - the highest of any Jaguar engine. The 3.0-liter V6 supercharged 380 will only be available in Jaguar's forthcoming new sports car, the F-Type, while the 340HP version will also be offered in XF and XJ models in the UK, Europe, North America, China and other selected world markets. No performance specs have been provided yet on the 380HP version, however, the 340HP version runs from 0-60mph in 5.7 secs in the XF and XJ. Top speed is electroncically limited to 155mph. Jaguar's stop-start system will be available.The second engine is the 2.0-liter inline 4-cylinder turbocharged unit which produces 240HP (177kW / 237bhp) and 340Nm (251lb-ft). With better performance and economy than Jaguar's existing naturally-aspirated 3.0-liter AJ-V6 engine, the 2.0-liter turbo will replace the AJ-V6 in the XF and XJ saloons. The 2.0-liter turbo will be offered in the XF model for Europe, North America, China and other selected world markets. Same goes for the XJ except North America.Both engines will be available with an eight-speed automatic transmission.

2.0-liter inline 4-cylinder turbo

380HP supercharged V6

fasolini6 · 30 Aprile 2012

Il 2.0 turbo benzina è a iniezione diretta?

beckervdo · 30 Aprile 2012

fasolini6 ha scritto:

Il 2.0 turbo benzina è a iniezione diretta?
Clicca per allargare...

Sì, iniezione diretta di benzina

http://en.wikipedia.org/wiki/Ford_ecoboost

giacomo · 30 Aprile 2012

saluti, il peso del 2 litri è veramente ridotto, solo 138 kg;

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