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Home > General > Future of engines for large SUVs |
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Disco_Mikey Member Since: 08 Apr 2012 Location: Dundee, Scotland Posts: 4395 |
3.0 Supercharged V6 petrol, circa 300bhp currently used in the Jag, and overseas LR models
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Sat Nov 07 2015 9:58pm |
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nigel52 Member Since: 20 Nov 2013 Location: Farnham Posts: 274 |
What would be the likely mpg needs to be circa mid 30s Current Merc GLE 3.5d 2016 model, 2011 RRS HSE standard
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Sat Nov 07 2015 10:24pm |
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RRSTDV8 Member Since: 12 Aug 2011 Location: Northamptonshire Posts: 8978 |
Power is basically torque x revs so if you develop 250PS at c.5000rpm then you'll be developing reasonable torque anyway. You'd need to choose gearing appropriate to the rev range and a low range box would help with that. Ford have a 250bhp/275lbft 2L turbo petrol, for example. Stick that in front of an 8 or 9 speed auto 'box with a 2-speed transfer case and you'd be good enough for most, especially if you can get the weight of the vehicle down in the process. Additionally, if you use a hybrid system you could use electric power to supplement the engine - if you're really clever you use the electric in tricky situations where the extremely controllable output from the electric motor would give traction benefits. Hybrid keeps the green brigade happy too. I could imagine a petrol FWD LR with electric RWD when traction is required. No need for diff locks etc. as the rear wheels could be independently driven so only the wheel with traction is driven. The front end can use existing traction control strategies with a locking diff if considered necessary. The future is not inefficient big engines with masses of excess torque, it's efficient small engines supplemented with electric motors. Add clever control electronics and intelligent drive trains and you get good on-road performance with good off road ability too. Cutting drive to everything behind the transfer case would help with mpg - essentially what happens now with the "small" LR stuff. 2012 SDV6 - it's missing a couple of cylinders 2008 TDV8 - it was a labour of love and is much missed |
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Sat Nov 07 2015 11:01pm |
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Tim in Scotland Member Since: 30 May 2005 Location: Driving along in my automobile Posts: 17476 |
According to Auto-Express (I never believe a word they print!) claims that Disco5 will be launched with the 2.0l Igneium engine. With scepticism about diesel emissions figures by the general public I think Land Rover will have to think PDQ about putting the V6 S/C petrol engine already fitted to export models into UK and European cars, Auto-Express says it is going into Disco5 too! Maybe there will be some new engines for 2016.MY in March? 2020 Pangea Green 1st Edition D240 New Defender 110 is here and loving it
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Sat Nov 07 2015 11:07pm |
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drdelrrs Member Since: 02 Nov 2010 Location: UK Posts: 1163 |
Over reaction. |
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Sun Nov 08 2015 12:01am |
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nigel52 Member Since: 20 Nov 2013 Location: Farnham Posts: 274 |
Personally impressed with these new Eco boost engines. 2017/2018 I bet we see them in the RRS AS PART OF A HYBRID OPTION. Current Merc GLE 3.5d 2016 model, 2011 RRS HSE standard
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Sun Nov 08 2015 7:44am |
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Camelrock Member Since: 31 Aug 2013 Location: North Yorkshire Posts: 1003 |
The thing is you get these small engines working harder and harder putting out these great outputs, but how long will they last before they need a rebuild etc. 2008 G4 RRSport TDV8 current
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Sun Nov 08 2015 8:28am |
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Disco_Mikey Member Since: 08 Apr 2012 Location: Dundee, Scotland Posts: 4395 |
One would assume it may be dependant on how often you use the extremes of its performance |
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Sun Nov 08 2015 1:30pm |
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RRSTDV8 Member Since: 12 Aug 2011 Location: Northamptonshire Posts: 8978 |
The current range of large engines aren't exactly paragons of reliability. The last bomb-proof engine LR used was probably the 2.25 petrol (and that was intended to be a diesel too I believe). It wasn't exactly "high performance" though.
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Sun Nov 08 2015 3:28pm |
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Lost for Words Member Since: 15 Jan 2015 Location: Warminster, Wiltshire Posts: 1477 |
^^^^
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Sun Nov 08 2015 3:55pm |
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Col Member Since: 02 Sep 2012 Location: Hawkes Bay NZ Posts: 4971 |
I guess I'll stick with my totally inefficient gas, guzzling 500bhp 5.0L S/C for the time being.
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Sun Nov 08 2015 6:08pm |
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hodjie Member Since: 13 Nov 2013 Location: United Kingdom Posts: 91 |
nice one col ,think il do the same |
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Sun Nov 08 2015 9:09pm |
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nigel52 Member Since: 20 Nov 2013 Location: Farnham Posts: 274 |
Also one could make an argument for not changing now staying with my TDV6 and waiting to see what comes along. The depreciation on a 2011 RRS will be far less than buying new now and in three years time with new petrol engine on line seeing a huge depreciation in a diesel RRS.
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Sun Nov 08 2015 9:23pm |
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muddywheels Milk Float Man Member Since: 30 Jun 2010 Location: East Riding of Yorkshire Posts: 5637 |
I realise the RRS2 has shed some weight and has a result also a couple of seconds off the 0-60 but the DS I'm driving round in at moment is as quick as MY13 Black Edition I had previously despite losing 2 cylinders and a 1000cc but feels just as big - so I'd say that's good progress
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Sun Nov 08 2015 9:39pm |
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