Breaking Lamborghini Murcielago Replacement News! The LP700-4
#474
11-15-2010 | 11:25 AM
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Joined: Jan 2008
Posts: 31,554
From: Zoo York
From EVO toady: Lamborghini Murcielago replacement - details
All-new, 6.5-litre V12 engine
The only fixed parameters given to Lamborghini’s engine design team was that the new car had to remain V12-powered, with an angle between the two banks of cylinders of 60 degrees and a request for the overall height of the engine to be reduced in order to help improve the handling. The end result of this development process is a completely new, 6498cc V12 engine producing 690bhp at 8250rpm and delivering a heady 509lb ft of torque at 5500rpm.
First off, the sheer size of this engine is amazing. Launching a brand new, 6.5-litre normally aspirated engine is almost unheard of these days, but Lamborghini boss Stephan Winkelmann explained to evo that he felt it was essential for the new car to have such a large displacement engine if it was to remain true to the DNA of Lamborghini super sports cars. ‘A Lamborghini engine needed to be able to supply massive power over a huge range of revs as this is a major part of the unique Lamborghini driving experience’, he said.
Despite being similar in capacity to the outgoing V12 (which was 6495.7cc in size), this is a completely new engine known internally as the ‘L539’. For starters, the cylinder bore has increased from 88mm to 95mm while the stroke has reduced from 89mm to 76.4mm. This allows the new engine to rev even quicker than before as piston speed is reduced for any given revs (compared to the old unit) and, thanks to that big increase in bore size, both the inlet and exhaust valve diameters can be increased too. This allows for much better engine breathing. The compression ratio has also been increased to 11.8:1, a remarkable figure for such a large engine.
Next, the new engine is a ‘dry sump’ design meaning the engine oil is contained in a separate reservoir from where it is pumped around the engine before being scavenged again at the base of the engine and then returned to the main reservoir. The engine is physically smaller now, as the block is shorter because of the smaller stroke and the facts there’s no sump at the base of the engine. The dry sump system also means the oil supply around the engine is more reliable during periods of high cornering G or heavy braking; the reason why most race cars have this system of lubrication.
Overall then, the new engine weighs in at 235kg (down from 253kg) and measures just 784mm in height, allowing it to sit some 60mm lower in the chassis than the Murcielago’s V12. This should aid handling as the roll height and centre of gravity will be reduced accordingly.
All new seven-speed gearbox
This new Murceilago replacement gets a completely new seven-speed gearbox which Lamborghini refer to as being an ‘ISR’ transmission, standing for ‘Independent Shifting Rods’, here’s how it works.
On a conventional gearbox, second gear sits next to third gear on a shaft running through the gearbox, and as you move the gearstick from second to third, a selector fork moves a sleeve from one gear to the other, allowing the next gear to come into play.
On this new gearbox, though, the gears are engaged independently. So in the same example of changing from second to third, the third gear selector can be partway through the process of bringing the gear into play as the second gear selector is taking second gear out of drive. This means the speed of change can be shortened dramatically, Lamborghini is saying changing gear via a paddle on this new gearbox will take just 50milliseconds, some 40 per cent faster than on the very latest e-gear equipped Lamborghini Gallardo.
Another requirement was for this gearbox to carry all the hydraulic valves and piping internally within its casing, so reducing the overall size of the gearbox dramatically.
Fitting a dual-clutch transmission to this new car was dismissed very early on - this type of gearbox would weigh a lot more than the new single clutch gearbox does, as well as being physically bigger too, so packaging would have been much trickier.
Winkelmann doesn’t like the feel a modern DSG gives either, preferring the more aggressive action of the new gearbox, saying it gives the driver a more emotional link with the mechanicals of the car than a dual-clutch transmission gearbox ever could.
The car has an updated four-wheel drive system. And Lamborghini is making great play of a new master ECU that controls the requirements of the engine, gearbox and all-wheel drive transmission all in real time, rather than each component having it’s own ECU.
More details of this new Lamborghini LP700-4 (including its full name, which has been rumoured to be Jota or Aventador) will be released in the near future. But from what we’ve seen so far, it looks like the Murcielago replacement should be very special indeed.
Source:
Lamborghini Murcielago replacement - engine and gearbox details | evo
#475
11-15-2010 | 11:46 AM
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Joined: Sep 2008
Posts: 2,667
From: Nashville, TN
Re the above photoshop, I believe I read that the car won't have door handles.
Lamborghini is saying their new gearbox shifts almost 50% faster than a DSG. The 458 Italia's DSG shifts in 50 milliseconds, so we would expect the Lamborghini to shift in 30 milliseconds. That's faster than F1 cars, isn't it?
Pictures of the new engine and gearbox
Lamborghini reveals all-new 6.5L V12 engine and ISR gearbox — Autoblog
Lamborghini is saying their new gearbox shifts almost 50% faster than a DSG. The 458 Italia's DSG shifts in 50 milliseconds, so we would expect the Lamborghini to shift in 30 milliseconds. That's faster than F1 cars, isn't it?
Pictures of the new engine and gearbox
Lamborghini reveals all-new 6.5L V12 engine and ISR gearbox — Autoblog
Last edited by Overtaker; 11-15-2010 at 11:54 AM.
#476
11-15-2010 | 11:49 AM
TS Official Automotive Enthusiast
Joined: Jan 2009
Posts: 3,533
You are the best DJ, this is the info many wanted to read. Now CAR and Autocar turn Lamborghini reveals 2011's new V12 supercar engine
Lamborghini today announced the first details of its new V12 engine and transmission, which Lamborghini president and CEO Stephan Winkelmann promises will be 'the strong heart of the Murcielago successor next year.'
It's to be the first clean-sheet Lamborghini engine since the original V12 first appeared in the 350GT, nearly 50 years ago.
Lambo V12: a lightweight engine
Lamborghini is keen to promote the low weight yet high performance of the new V12, which produces 700bhp yet tips the scales at only 235kg.
Sant'Agata has also announced a new transmission for the Murcielago successor. Lamborghini claims the new 'ISR' automated manual gearbox will combine minimal shift times half that of a dual-clutch transmission while still boasting low weight and compact dimensions.
ISR: another TLA?
ISR is an acronym for Independent Shifting Rod. Instead of taking place in series, as with a conventional gearbox, shifting can occur virtually in parallel, says Lamborghini. While one shifting rod is moving out of one gear, the second shifting rod can already engage the next (like on a twin-clutch transmission). Moreover, the ISR gearbox weighs only 79kg – a distinct benefit, even against comparable DSG transmissions, which are considerably heavier.
Developed in-house by Lamborghini, both the engine and transmission will be built at the company headquarters in Sant’Agata Bolognese.
Lamborghini's new V12: the raw stats
The new engine has a 6.5 litre displacement, with maximum torque of 509lb ft available at just 5500rpm. The (probably screaming) redline stands at 8250rpm.
For optimum weight, the crankcase and the four-valve cylinder heads are made from aluminum-silicon alloy. Lambo says the short-stroke layout ensures strong high-revving performance and low internal friction.
Encouargingly, it's promised that the trademark spine-tingling Lamborghini sound remains: from a moderate rumble when cruising at low revs to a howling crescendo of gears at the limit, yet it is claimed that the exhaust system delivers the lowest emmision levels yet seen by a Lambo V12 supercar.
So while we're sad to bid farewell to the Murcielago's characterful V12, we're hopeful this new unit will continue to thrill car enthusiasts and bystanders alike.
More amazing info and photos of the engine here:
Lamborghini reveals 2011's new V12 supercar engine | Automotive & Motoring News | Car Magazine Online
And Autocar magazine.
Lambo's new V12 in detail
Lamborghini has revealed full details of its all-new V12 engine, set to make its debut in next year's Murciélago replacement. Here, Autocar takes an in depth look at the new 6.5-litre unit, as well as the firm's new single-clutch automated manual gearbox.
The engine
Lamborghini’s R&D team was given just two criteria for the new motor, codenamed L539 and designed from a blank sheet of paper: it had to be a V12 and have a 60-degree bank.
In the end the team ended up with the old motor’s 6.5-litre capacity, but 59bhp more, at 691bhp. There’s more torque, too - a peak of 509lb ft - and it’s available 500rpm further down the rev range, at 5500rpm.
The bore increases, from 88mm to 95mm, but the stroke is down from 89mm to 76.4mm; the compression ratio is 11.8:1, compared with the old unit’s 11:1. There’s also a useful reduction in weight, from 253kg to 235kg, and the dry sump height is just 120mm, 75mm lower than the old motor’s. “This makes a big difference in the centre of gravity,” chief engineer Maurizio Reggiani says.
Features to improve the motor’s efficiency include switchable water circuits to hasten warm-up, and a total of eight scavenging pumps that reduce pressure and scavenging losses by around 50 per cent.
There’s no direct injection, though - for now, at least. “We looked at it,” Reggiani revealed, “but there are issues with back pressure [in the exhaust system] and how you manage that while still achieving maximum power. Multi-point injection is a simple solution that avoids an additional device to reduce particulates, so we’ve gone with that. But DI is something we could look at again in the future.”
The gearbox
Having ruled out a dual-clutch unit, Lambo has gone with another single-clutch automated manual for the next Murciélago. “It’s the most emotional system to use,” said CEO Stephan Winkelmann, who has called the new unit - developed in conjunction with Graziano - “a sequential race gearbox in a roadgoing car”.
The new gearbox (called ISR, for Independent Shifting Rods) is a seven-speed, 70kg unit with a twin-plate, 235mm clutch. It uses four shifting rods to run the shift process “virtually in parallel”; times fall to as little as 50ms, around 40 per cent faster than with the Gallardo’s e-gear system.
The gearbox will run in three modes: Strada, which will offer a fully automatic shift if desired, the more focused Sport and the extreme Corsa, which will also include launch control.
The differential set-up includes a computer-controlled unit at the front, instead of the old viscous coupling, a Haldex4-based centre diff and a rear unit that’s integrated into the casting of the engine.
Lamborghini claims the new gearbox is tidier and smaller than the old transmission, a factor that should free up cabin space in the Murciélago’s replacement. The firm also says almost all customers want this set-up - and as a result, the car will not be available with a regular manual.
More info and pics here:
Lambo's new V12 in detail - Autocar.co.uk
Lamborghini today announced the first details of its new V12 engine and transmission, which Lamborghini president and CEO Stephan Winkelmann promises will be 'the strong heart of the Murcielago successor next year.'
It's to be the first clean-sheet Lamborghini engine since the original V12 first appeared in the 350GT, nearly 50 years ago.
Lambo V12: a lightweight engine
Lamborghini is keen to promote the low weight yet high performance of the new V12, which produces 700bhp yet tips the scales at only 235kg.
Sant'Agata has also announced a new transmission for the Murcielago successor. Lamborghini claims the new 'ISR' automated manual gearbox will combine minimal shift times half that of a dual-clutch transmission while still boasting low weight and compact dimensions.
ISR: another TLA?
ISR is an acronym for Independent Shifting Rod. Instead of taking place in series, as with a conventional gearbox, shifting can occur virtually in parallel, says Lamborghini. While one shifting rod is moving out of one gear, the second shifting rod can already engage the next (like on a twin-clutch transmission). Moreover, the ISR gearbox weighs only 79kg – a distinct benefit, even against comparable DSG transmissions, which are considerably heavier.
Developed in-house by Lamborghini, both the engine and transmission will be built at the company headquarters in Sant’Agata Bolognese.
Lamborghini's new V12: the raw stats
The new engine has a 6.5 litre displacement, with maximum torque of 509lb ft available at just 5500rpm. The (probably screaming) redline stands at 8250rpm.
For optimum weight, the crankcase and the four-valve cylinder heads are made from aluminum-silicon alloy. Lambo says the short-stroke layout ensures strong high-revving performance and low internal friction.
Encouargingly, it's promised that the trademark spine-tingling Lamborghini sound remains: from a moderate rumble when cruising at low revs to a howling crescendo of gears at the limit, yet it is claimed that the exhaust system delivers the lowest emmision levels yet seen by a Lambo V12 supercar.
So while we're sad to bid farewell to the Murcielago's characterful V12, we're hopeful this new unit will continue to thrill car enthusiasts and bystanders alike.
More amazing info and photos of the engine here:
Lamborghini reveals 2011's new V12 supercar engine | Automotive & Motoring News | Car Magazine Online
And Autocar magazine.
Lambo's new V12 in detail
Lamborghini has revealed full details of its all-new V12 engine, set to make its debut in next year's Murciélago replacement. Here, Autocar takes an in depth look at the new 6.5-litre unit, as well as the firm's new single-clutch automated manual gearbox.
The engine
Lamborghini’s R&D team was given just two criteria for the new motor, codenamed L539 and designed from a blank sheet of paper: it had to be a V12 and have a 60-degree bank.
In the end the team ended up with the old motor’s 6.5-litre capacity, but 59bhp more, at 691bhp. There’s more torque, too - a peak of 509lb ft - and it’s available 500rpm further down the rev range, at 5500rpm.
The bore increases, from 88mm to 95mm, but the stroke is down from 89mm to 76.4mm; the compression ratio is 11.8:1, compared with the old unit’s 11:1. There’s also a useful reduction in weight, from 253kg to 235kg, and the dry sump height is just 120mm, 75mm lower than the old motor’s. “This makes a big difference in the centre of gravity,” chief engineer Maurizio Reggiani says.
Features to improve the motor’s efficiency include switchable water circuits to hasten warm-up, and a total of eight scavenging pumps that reduce pressure and scavenging losses by around 50 per cent.
There’s no direct injection, though - for now, at least. “We looked at it,” Reggiani revealed, “but there are issues with back pressure [in the exhaust system] and how you manage that while still achieving maximum power. Multi-point injection is a simple solution that avoids an additional device to reduce particulates, so we’ve gone with that. But DI is something we could look at again in the future.”
The gearbox
Having ruled out a dual-clutch unit, Lambo has gone with another single-clutch automated manual for the next Murciélago. “It’s the most emotional system to use,” said CEO Stephan Winkelmann, who has called the new unit - developed in conjunction with Graziano - “a sequential race gearbox in a roadgoing car”.
The new gearbox (called ISR, for Independent Shifting Rods) is a seven-speed, 70kg unit with a twin-plate, 235mm clutch. It uses four shifting rods to run the shift process “virtually in parallel”; times fall to as little as 50ms, around 40 per cent faster than with the Gallardo’s e-gear system.
The gearbox will run in three modes: Strada, which will offer a fully automatic shift if desired, the more focused Sport and the extreme Corsa, which will also include launch control.
The differential set-up includes a computer-controlled unit at the front, instead of the old viscous coupling, a Haldex4-based centre diff and a rear unit that’s integrated into the casting of the engine.
Lamborghini claims the new gearbox is tidier and smaller than the old transmission, a factor that should free up cabin space in the Murciélago’s replacement. The firm also says almost all customers want this set-up - and as a result, the car will not be available with a regular manual.
More info and pics here:
Lambo's new V12 in detail - Autocar.co.uk
