RE: Oof: Huracan replacement will get 10,000rpm V8
Tuesday 21st May
Oof: Huracan replacement will get 10,000rpm V8
Electrified, turbocharged Lamborghinis won't be any less mad, it seems
The Lamborghini Huracan will take some replacing, its evolution from fast-but-flawed supercar into one of the modern greats over a decade was quite something. Its successor is currently only known as the Lamborghini 634, but rest assured its technical makeup is way more exciting than the project name. If you thought the Revuelto was an auspicious start for Lamborghini’s High Performance Electrified Vehicles, you ain't seen nothing yet...
10,000rpm is the headline number, as that’ll be the maximum revolutions per minute of the new hybridised 4.0-litre V8. This is incredible enough - anything going beyond 7,500 is notable nowadays. But remember it’s twin turbocharged as well and the 634’s engine becomes even more of an achievement. That 10k isn’t just for show, either, as peak power of 800hp is actually made at 9,000rpm (!) and is there until 9,750; you’ll be using all ten thousand, that’s for sure.
Torque is rated at 538lb ft from 4,000-7,000rpm, the idea being to create ‘an exhilarating progression similar to that of a racing engine’, with a ‘unique and distinctive character’ to the flat-plane sound. Marvellous. Power reaches the road via a new vairant of the Revuelto’s eight-speed DCT.
Like the V12 flagship, the new HPEV will make use of three electric motors in the hybrid system. Lamborghini claims that the electric element of the powertrain, wedged in between the V8 and DCT, is small and light yet still capable of producing 221lb ft and 147hp. Beyond that, no more is known for now. But you’re probably thinking rather a bit more about the 10,000rpm V8 than the size of the battery, right? Lamborghini says the 634 is still on track to launch this year - bring it on.
- Ten things to know about the astonishing Revuelto
- Porsche 911 GT3 RS (992) vs. Lamborghini Huracan STO
Discussion
I guess my question would be why it goes to 10,000 rpm, given the headline power figure could be achieved at 8k or so - does it save weight by needing less boost and a less stout block, or is it favourable with the hybrid, or just a choice of subjective character?
I think overall the weight will be key especially vs the Ferrari and McLaren V6 hybrids, I fear it ending up 1800kg+ which doesn't seem ideal for a 'junior' supercar.
I think overall the weight will be key especially vs the Ferrari and McLaren V6 hybrids, I fear it ending up 1800kg+ which doesn't seem ideal for a 'junior' supercar.
samoht said:
I guess my question would be why it goes to 10,000 rpm, given the headline power figure could be achieved at 8k or so - does it save weight by needing less boost and a less stout block, or is it favourable with the hybrid, or just a choice of subjective character?
.
You change gear later for one thing so less time spent swapping cogs losing momentum. You can also use closer ratios for better acceleration..
I think there's also a little bit of bragging rights involved.
samoht said:
I guess my question would be why it goes to 10,000 rpm, given the headline power figure could be achieved at 8k or so - does it save weight by needing less boost and a less stout block, or is it favourable with the hybrid, or just a choice of subjective character?
Just makes it more fun, if you just want headline power then EV would be the way to go these daysWell that’s not complex at all is it.
I would have loved to see something a bit more left-field from Lamborghini.
Instead of using turbocharging to boost the intake, use it to generate electricity via a high speed generator, keeping the battery at full state of charge.
Increase the torque rating of the motor on the crank and now you have a naturally-aspirated 10000 rpm screamer with as much torque fill as your heart desires.
The turbogenerator can be bypassed for the full effect under WOT.
I would have loved to see something a bit more left-field from Lamborghini.
Instead of using turbocharging to boost the intake, use it to generate electricity via a high speed generator, keeping the battery at full state of charge.
Increase the torque rating of the motor on the crank and now you have a naturally-aspirated 10000 rpm screamer with as much torque fill as your heart desires.
The turbogenerator can be bypassed for the full effect under WOT.
samoht said:
I guess my question would be why it goes to 10,000 rpm, given the headline power figure could be achieved at 8k or so - does it save weight by needing less boost and a less stout block, or is it favourable with the hybrid, or just a choice of subjective character?
I think overall the weight will be key especially vs the Ferrari and McLaren V6 hybrids, I fear it ending up 1800kg+ which doesn't seem ideal for a 'junior' supercar.
It says peak power 9-9.75krpm, not 8k...?I think overall the weight will be key especially vs the Ferrari and McLaren V6 hybrids, I fear it ending up 1800kg+ which doesn't seem ideal for a 'junior' supercar.
E90_M3Ross said:
It says peak power 9-9.75krpm, not 8k...?
Sure, this engine is arranged so as to have its powerband between 9,000 and 9,750. My point was that it's perfectly possible to get 800hp out of a 4.0T V8 with lower revs, others have done so. So I was curious whether this was a decision taken to achieve technical objectives or a subjective choice to achieve a desired character.Dr G said:
samoht said:
...subjective character?
I'd go with this, and I'm fine with it.Can't use the NA V10 anymore, so I hope this V8 can sing!
Even though low down torque and smooth turbo power delivery make for a very usable road car, I miss the days of working an engine to within an inch of its life to persuade it to give up its best performance.
I remember being late-teens/early 20's and getting into the drivers seat of even the most humble of machines and being excited to see how it sounds and how high it revved.
The headline stats on this car sound like a defiant reluctance to give in to dull, droning engine notes that are effective but not emotionally engaging.
I really hope a manufacturer at the more accessible end of the market takes note and develops something in the 200-400bhp range with a high-revving hybrid drivetrain. Weight penalty of the hybrid drivetrain aside, imagine being able to pootle up to Scotland on electric/hybrid power achieving acceptable economy, and then flipping a switch when you get to the highlands and having a 9000rpm instrument under your right foot. I wouldn't even care if it returned 25mpg at that point. Would be great in either a hot hatch or sports coupe format.
I remember being late-teens/early 20's and getting into the drivers seat of even the most humble of machines and being excited to see how it sounds and how high it revved.
The headline stats on this car sound like a defiant reluctance to give in to dull, droning engine notes that are effective but not emotionally engaging.
I really hope a manufacturer at the more accessible end of the market takes note and develops something in the 200-400bhp range with a high-revving hybrid drivetrain. Weight penalty of the hybrid drivetrain aside, imagine being able to pootle up to Scotland on electric/hybrid power achieving acceptable economy, and then flipping a switch when you get to the highlands and having a 9000rpm instrument under your right foot. I wouldn't even care if it returned 25mpg at that point. Would be great in either a hot hatch or sports coupe format.
resolve10 said:
Even though low down torque and smooth turbo power delivery make for a very usable road car, I miss the days of working an engine to within an inch of its life to persuade it to give up its best performance.
I remember being late-teens/early 20's and getting into the drivers seat of even the most humble of machines and being excited to see how it sounds and how high it revved.
The headline stats on this car sound like a defiant reluctance to give in to dull, droning engine notes that are effective but not emotionally engaging.
I really hope a manufacturer at the more accessible end of the market takes note and develops something in the 200-400bhp range with a high-revving hybrid drivetrain. Weight penalty of the hybrid drivetrain aside, imagine being able to pootle up to Scotland on electric/hybrid power achieving acceptable economy, and then flipping a switch when you get to the highlands and having a 9000rpm instrument under your right foot. I wouldn't even care if it returned 25mpg at that point. Would be great in either a hot hatch or sports coupe format.
This is what I was suggesting.I remember being late-teens/early 20's and getting into the drivers seat of even the most humble of machines and being excited to see how it sounds and how high it revved.
The headline stats on this car sound like a defiant reluctance to give in to dull, droning engine notes that are effective but not emotionally engaging.
I really hope a manufacturer at the more accessible end of the market takes note and develops something in the 200-400bhp range with a high-revving hybrid drivetrain. Weight penalty of the hybrid drivetrain aside, imagine being able to pootle up to Scotland on electric/hybrid power achieving acceptable economy, and then flipping a switch when you get to the highlands and having a 9000rpm instrument under your right foot. I wouldn't even care if it returned 25mpg at that point. Would be great in either a hot hatch or sports coupe format.
Turbocharging is used to improve economy/emissions and fatten the torque curve, whilst downsizing the capacity.
Problem is, it permanently interferes with the driving experience to some degree.
Supercharging can't really do the economy thing.
If batteries and motor/generators are incorporated into a car like this, they should be used to enhance the driving experience.
Recovering exhaust gas energy without interfering is what I was hoping they might try for.
A hope made in vain of course.
GT9 said:
This is what I was suggesting.
Turbocharging is used to improve economy/emissions and fatten the torque curve, whilst downsizing the capacity.
Problem is, it permanently interferes with the driving experience to some degree.
Supercharging can't really do the economy thing.
If batteries and motor/generators are incorporated into a car like this, they should be used to enhance the driving experience.
Recovering exhaust gas energy without interfering is what I was hoping they might try for.
A hope made in vain of course.
So in theory have a bypass valve that can split the exhaust gas flow between a lovely clear exhaust path at larger throttle openings (or in good ol' sport mode) and that closes off to route the exhaust gas to effectively half a turbo, which instead of compressing air on the other side, is used as a generator for the hybrid system. Turbocharging is used to improve economy/emissions and fatten the torque curve, whilst downsizing the capacity.
Problem is, it permanently interferes with the driving experience to some degree.
Supercharging can't really do the economy thing.
If batteries and motor/generators are incorporated into a car like this, they should be used to enhance the driving experience.
Recovering exhaust gas energy without interfering is what I was hoping they might try for.
A hope made in vain of course.
Seems quite a nice idea, plenty of NA noises and idiosyncracies when you want them, and then the rest of the time you can use it as a generator for hybrid power to help with economy.
SturdyHSV said:
So in theory have a bypass valve that can split the exhaust gas flow between a lovely clear exhaust path at larger throttle openings (or in good ol' sport mode) and that closes off to route the exhaust gas to effectively half a turbo, which instead of compressing air on the other side, is used as a generator for the hybrid system.
Seems quite a nice idea, plenty of NA noises and idiosyncracies when you want them, and then the rest of the time you can use it as a generator for hybrid power to help with economy.
Yes, though it probably won't deliver quite the WLTP drive-cycle economy that intercooled turbocharging can achieve.Seems quite a nice idea, plenty of NA noises and idiosyncracies when you want them, and then the rest of the time you can use it as a generator for hybrid power to help with economy.
Also, buyers are going to need a lot more convincing it's a thing rather than plain old turbos.
For that reason alone, I doubt we will ever see it.
Gassing Station | General Gassing | Top of Page | What's New | My Stuff