Joined
·
2,703 Posts
Serious question. How would a turbo that kicks in at 7k rpm help emissions? I’m having a hard time figuring that one out.
The Huracan successor will redline at 10,000 RPM?!
21 - 33 of 33 Posts
Who’s making the engine? I’d guess if Audi isn’t, then it’s going to be Porsche. I seriously doubt Lambo would start manufacturing V8’s out of nowhere…let alone a hybrid twin turbo system. They haven’t made a V10 in 15 years.
I just hope it’s a bespoke engine, and not just something they pull out of the Cayenne or the Urus. But if it revs up to 10k and the turbos don’t kick in till 7k, then it must be bespoke. Even more awesome if it were a flat plane crank engine. I imagine it would have to be in order to rev that high.
Joined
·
271 Posts
I'm not an expert. But if it weren't for emissions, why would they downsize from the V10? They want to continue making a special car, and this is probably how they decided they could make it work.
It's tough to get a rev range like that in a modern car. Requires an insanely short stroke and a very high idle rev. The commies in office invested far too much money into imaginary climate improvement business and EV to allow it.
^ I usually agree with you, but I don't know, I wouldn't get too hung up on the turbocharging issue. Turbocharging sucks because it muffles exhaust sound and it creates an unnatural feeling power curve--I get that.
But Lamborghini, if I"m to gather from what I'm reading, is trying its best to mitigate that. You get up to 7k RPM before the turbos kick in (how will they do that?). Then when they do start spinning, you get a boost of torque added in, and you're revving to 10k. Even with turbos, a 10k revving engine will HAVE to sound awesome. The reason the post-boosted Ferrari engines don't sound as good is because the torque created by turbocharging precludes the need for higher revs, so they redline at 8k. All of the magic happens above 8k. Is that correct or is there another reason? Please let me know if I'm incorrect about that, because I always love learning more.
But Lamborghini, if I"m to gather from what I'm reading, is trying its best to mitigate that. You get up to 7k RPM before the turbos kick in (how will they do that?). Then when they do start spinning, you get a boost of torque added in, and you're revving to 10k. Even with turbos, a 10k revving engine will HAVE to sound awesome. The reason the post-boosted Ferrari engines don't sound as good is because the torque created by turbocharging precludes the need for higher revs, so they redline at 8k. All of the magic happens above 8k. Is that correct or is there another reason? Please let me know if I'm incorrect about that, because I always love learning more.
The turbos will have to be controlled electronically, I think. Otherwise you'd have to use a large impeller that spools up under only high velocity inflow.
It all depends on what you want from the car. The higher you rev, the more you compromise torque delivery (this is where batteries help a lot). It all depends on the engine design/crank configuration/efficiency of power curve throughout the rev range.
Example: A C7 Z06 produces probably twice as much torque at 1500 rpm than our V10s do at their peak. There's advantages to that too, especially if you can put the power down.
You don't need a turbo to rev high, but you can utilize a turbo to feed more air into the engine and create a bigger boom so that the torque curve doesn't collapse.
I'm very confident Lamborghini will develop a brilliant engine but there's no way to completely eliminate the non-linearity of power delivery with turbos.
Joined
·
6,111 Posts
This is a big part of it for me. No matter how it's done - sequential turbos, single smaller turbo, etc. - it always seems to result in a compromised torque curve with lumpy power delivery. While I'm not a pro driver, and I'm not driving in competitive motorsports, there's still something disconcerting about an on-rush of power that's incongruent to the throttle input, simply because the engine is suddenly getting force-fed... and then at differing amounts within the turbo-engaged part of the power band. It's kind of like "dynamic steering" to me... don't suddenly change the steering ratio while I'm turning!
I suppose, like any other characteristic, these can be mastered, predicted, and work to one's benefit... but I just don't appreciate it..
That said, I'm a sucker for a high-revving engine, so if Lamborghini can really pull off a 10k redline, no less on a turbo car, that'll be something to experience.
That instant engine feedback (especially with tc/stability off) is special. Pure connection with the car.This is a big part of it for me. No matter how it's done - sequential turbos, single smaller turbo, etc. - it always seems to result in a compromised torque curve with lumpy power delivery. While I'm not a pro driver, and I'm not driving in competitive motorsports, there's still something disconcerting about an on-rush of power that's incongruent to the throttle input, simply because the engine is suddenly getting force-fed... and then at differing amounts within the turbo-engaged part of the power band. It's kind of like "dynamic steering" to me... don't suddenly change the steering ratio while I'm turning!
I suppose, like any other characteristic, these can be mastered, predicted, and work to one's benefit... but I just don't appreciate it..
That said, I'm a sucker for a high-revving engine, so if Lamborghini can really pull off a 10k redline, no less on a turbo car, that'll be something to experience.
Latest news is that the Huracan successor WILL have a V10?
New thread here:
www.r8talk.com
New thread here:
Wait: The Huracan successor WILL have a V10?!
Wait a minute, my friends! I decided to start a new thread so that more people will see this (ie this news won't be buried in the old thread). Latest news is that the V10 will live on in the new Huracan! There are a few articles about this, and below is one of them. (y):) The baby Lambo...
www.r8talk.com
21 - 33 of 33 Posts
