RE: Beijing show: Jag's Supercharged V6 and turbo four

RE: Beijing show: Jag's Supercharged V6 and turbo four

Monday 23rd April 2012

Beijing show: Jag's Supercharged V6 and turbo four

Supercharged V6 replaces naturally aspirated V8; turbocharged four replaces V6...



Jaguar has used the Beijing motor show to announce the introduction of two new forced-induction petrol engines for its cars - a 3.0-litre supercharged V6 and a 2.0-litre turbocharged four-cylinder motor.


So while the main 'in-the-metal' news for Jaguar is the new XJ Ultimate - one of the first two products from JLR's new 'Engineered to Order' department, the other being the Beckhamised Range Rover Evoque - it's the under-the-bonnet bits that are the most significant.

The XJ Ultimate will be the first Jaguar to get the new supercharged V6, with a 340hp and 332lb ft state of tune that it will share with the XF, while the version of the engine due to go in the forthcoming F-Type sports car will get 380hp and 339lb ft of torque.

The new V6 is actually a development of the 5.0-litre supercharged V8, sharing its all-aluminium construction and with cross-bolted main bearing caps to increase rigidity and refinement. The Roots-type supercharger is mounted within the 'V' of the engine and is more compact than the one used in the V8. Its boost, meanwhile electronically 'supervised' by new Bosch engine management software, which Jaguar reckons can offer up to a 20 per cent improvement in efficiency.


Talking of efficiency, the engine gets stop/start functionality, while the gearbox is the eight-speed ZF unit also used in diesel XFs. Jaguar's engineers have also come up with a system of counter-rotating front and rear balancer weights, lending the six-cylinder unit the same smoothness and refinement characteristics as its larger V8 brother.

The 2.0-litre petrol, meanwhile, will replace the naturally aspirated 3.0-litre V6 petrol (in such markets where the models still exists) in both the XF and XJ and will get 240hp and 251lb ft.

In both applications, this will be enough to haul the cars to 60mph from rest in 7.5 seconds on the way to 150mph, while the 340hp supercharged V6 will do the 0-60mph sprint in 5.7 seconds before hitting a limited 155mph top speed.

Author
Discussion

anonymous-user

Original Poster:

53 months

Monday 23rd April 2012
quotequote all
I actually think this is a good thing as long as the performance supercharged V8 cars remain. It will give Jag a much broader range and should increase sales, allowing them to develop more interesting stuff!

rm89

348 posts

176 months

Monday 23rd April 2012
quotequote all
Is the 2.0 turbo the same engine as the Evoque, i.e the Ford Ecoboost? Heard good things about that engine, haven't had opportunity to try it myself though.

toppstuff

13,698 posts

246 months

Monday 23rd April 2012
quotequote all
Lovely cars. the new Jaguars.

Easily more desirable than anything Germany can offer at their price level.


Stubbs

12 posts

182 months

Monday 23rd April 2012
quotequote all
A sign of more stringent emissions regulations?

Caulkhead

4,938 posts

156 months

Monday 23rd April 2012
quotequote all
jmcc500 said:
Rootes. With an e.
[ultra pedant mode] Roots. With no e. Unlike Rootes motors which does have an e. [/ultra pedant mode]

biggrin

ETA - too slow with the delete there! smile

kambites

67,442 posts

220 months

Monday 23rd April 2012
quotequote all
If they can get the economy of a 380bhp 3.0 V6 to be competitive with a supercharger rather than a turbo, it's great news for fans of throttle response. smile

NGK210

2,839 posts

144 months

Monday 23rd April 2012
quotequote all
And while it's about it, shouldn't Jag get around to modding the XJ's engine bay to accept the Range Rover's V8 turbodiesel??

rm89

348 posts

176 months

Monday 23rd April 2012
quotequote all
kambites said:
If they can get the economy of a 380bhp 3.0 V6 to be competitive with a supercharger rather than a turbo, it's great news for fans of throttle response. smile
Nissan have used a supercharger instead of turbo for their 3-cyl 1.2 in the Micra. Has better emissions, more power and higher (quoted) combined mpg than the normally aspirated base model, and also the VAG 1.2 turbo in the Ibiza/Polo etc - by quite a significant margin in the latter case. I know it's a slightly different application, but it does show that the technology is there to allow superchargers to return very good economy & CO2 figures.

monthefish

20,439 posts

230 months

Monday 23rd April 2012
quotequote all
the article said:
So while the main 'in-the-metal' news for Jaguar is the new XJ Ultimate - one of the first two products from JLR's new 'Engineered to Order' department, the other being the Beckhamised Range Rover Evoque
Elsewhere on the net

"Beijing 2012: 2013 Jaguar XJ Ultimate Debuts, Third Product of New ETO Division"

http://rumors.automobilemag.com/beijing-2012-2013-...

ferdyg

193 posts

170 months

Monday 23rd April 2012
quotequote all
NGK210 said:
And while it's about it, shouldn't Jag get around to modding the XJ's engine bay to accept the Range Rover's V8 turbodiesel??
why?

Triumph Man

8,665 posts

167 months

Monday 23rd April 2012
quotequote all
I hate this recent trend of turbo charged 4 cylinder engines in larger cars, the new 3-series for example, and now in a Jaguar XJ! I know it's for emissions reasons, but why does everyone seem to forget about the lovely sound of a 6 cylinder engine?

anonymous-user

Original Poster:

53 months

Monday 23rd April 2012
quotequote all
Triumph Man said:
I hate this recent trend of turbo charged 4 cylinder engines in larger cars, the new 3-series for example, and now in a Jaguar XJ! I know it's for emissions reasons, but why does everyone seem to forget about the lovely sound of a 6 cylinder engine?
Did you miss the bit about a supercharged V6?

The Obeast

99 posts

143 months

Monday 23rd April 2012
quotequote all
At the moment i think Jaguar are currently the only car manufactuer without an ugly car in its stable.

havent driven any of the current Jags so couldnt comment on the engines, but on paper they seem a good bet.

Triumph Man

8,665 posts

167 months

Monday 23rd April 2012
quotequote all
MonkeyMatt said:
Triumph Man said:
I hate this recent trend of turbo charged 4 cylinder engines in larger cars, the new 3-series for example, and now in a Jaguar XJ! I know it's for emissions reasons, but why does everyone seem to forget about the lovely sound of a 6 cylinder engine?
Did you miss the bit about a supercharged V6?
No, I didn't. Did you miss the bit about a turbocharged 4 cylinder replacing the N/A V6s?

anonymous-user

Original Poster:

53 months

Monday 23rd April 2012
quotequote all
Triumph Man said:
No, I didn't. Did you miss the bit about a turbocharged 4 cylinder replacing the N/A V6s?
But there will still be a V6 if you want one

Stew2000

2,776 posts

177 months

Monday 23rd April 2012
quotequote all

kambites

67,442 posts

220 months

Monday 23rd April 2012
quotequote all
MonkeyMatt said:
Triumph Man said:
No, I didn't. Did you miss the bit about a turbocharged 4 cylinder replacing the N/A V6s?
But there will still be a V6 if you want one
I think I'd put that as "there will still be a V6 if you can afford it". The V6 entry point will presumably be considerably more expensive than it was.

anonymous-user

Original Poster:

53 months

Monday 23rd April 2012
quotequote all
kambites said:
I think I'd put that as "there will still be a V6 if you can afford it". The V6 entry point will presumably be considerably more expensive than it was.
Being supercharged it would be quite easy to offer in different states of tune so may might be available at different price ranges!?

stuart-b

3,643 posts

225 months

Monday 23rd April 2012
quotequote all
Triumph Man said:
No, I didn't. Did you miss the bit about a turbocharged 4 cylinder replacing the N/A V6s?
Do you think Jag have a choice?

kambites

67,442 posts

220 months

Monday 23rd April 2012
quotequote all
MonkeyMatt said:
kambites said:
I think I'd put that as "there will still be a V6 if you can afford it". The V6 entry point will presumably be considerably more expensive than it was.
Being supercharged it would be quite easy to offer in different states of tune so may might be available at different price ranges!?
Possibly, but it's still unlikely to be offered as cheaply as the old entry level V6 that's being replaced by the I4.

Still, with the current obsession with the results of the European economy test, it's inevitable.