RE: Cosworth's 1000hp 6.5-litre V12: PH Meets

[Otispunkmeyer]

GregorFuk said:

Can anyone put more meat on the bones of this statement?

"but that wasn't really the priority here, and if you want power rather than economy port injection is slightly better, and it also meant we didn't need a GPF."

I’d like to understand why. Why does port injection allow the GPF to go?

PFI means very homogeneous fuel air mixture that burns very cleanly... you get very little in the way of particulates. DI engines suffer more because of the stratified nature of the fuel air mix. Very basically, when the fuel sprays in it fans out from very rich at the nozzle to very lean at the periphery and when the flame starts going the richer parts don't burn as well leaving particulates.

[mgbond]

Amazing.

I wonder if the intake will work harden. You can see it swelling under boost.

[Quadcamboy]

WOW just WOW. A maz ing

[Dr G]

Just to add again, that's a really interesting article.

[ilovequo]

Airbox laquer would weigh 80kg??
Did i read that wrong?

[thegreenhell]

ilovequo said:

Airbox laquer would weigh 80kg??
Did i read that wrong?

er, yes. 80g, not 80kg.

[InductionRoar]

Pretty much makes any other road going production engine seem a bit feeble and under-engineered.

Would the heatshield material on the manifold do a better job than ceramic coating? I assume so given the incredible lengths they have gone to already.

[leerandle]

What a great bit of engineering design. Well done Cosworth.

I love the 'we used 3 cylinder design first' to validate the numbers (power and emissions).

Is this the same principle when I heard the Vulcan engine was just 2 v6 bolted together (or something similar)

Cant wait to see the actual car and then the real performance/handling figures.

[VX BlackRat]

Mean max piston speed 26m/s, therefore bore 99mm, stroke 70mm approx.

[RumbleOfThunder]

"The engine uses cog driven camshafts - chains wouldn't be able to cope with the 11,100rpm limiter"

Not unlike a Nissan Terrano.

[CedricN]

Incredible engine project, all credit to them, that they fund such a spectacular engine in this day and age.

Port injection not a very big compromise on a N/A engine that isnt that knock limited, for a turbo engine its much more of a drawback..

[Mr-B]

What a masterpiece! Probably one of the last of it's kind. What a swansong though.

I wonder if Merc are just a very tiny bit concerned that they opted to go with F1 technology (and crap sound) for their engine? Round 1 to AM.

[RumbleOfThunder]

"I think that the Valkyrie is a very personal expression of Adrian Newey's vision of a car, whereas I'd say the Project One - which I'm sure will be a magnificent vehicle - is less an individual's view and more of a corporate one."

That's such a brilliant zinger.

[WojaWabbit]

poppopbangbang said:

WojaWabbit said:

Can a clever person tell me what all these fittings might be for on the exhaust? I was thinking sensors for use during testing but there seems to be a lot of them!

Thermocouples to monitor cat brick temperatures.

Thanks, and to vw_stu also. I couldn't figure out why so many were required... makes sense now!

[jjwilde]

Is no one going to mention that the engine has to be replaced after 62,137 miles?

If this was an EV people on here would be going crazy if the battery only lasted 62k.

[cookie1600]

dme123 said:

One point in particular really stand out for me:

"The engine uses cog driven camshafts - chains wouldn't be able to cope with the 11,100rpm limiter"
[/footnote]

It stood out to me too.

In engineering we generally describe them as gears, not 'cogs'. I'm sure Aston Martin, Red Bull and Cosworth don't use that nomenclature in development discussions. But hey, maybe Windy Miller was part of the team?

[Mr.Jimbo]

leerandle said:

What a great bit of engineering design. Well done Cosworth.

I love the 'we used 3 cylinder design first' to validate the numbers (power and emissions).

Is this the same principle when I heard the Vulcan engine was just 2 v6 bolted together (or something similar)

Cant wait to see the actual car and then the real performance/handling figures.

I'm surprised that it's a 3 cyl to be honest, usually for brand new combustion systems you'd do a single cylinder 'optical' engine where you analyse flame spread, combustion speed, resistance to knock etc - multi cylinder mule engines are less common but then I'm used to very pedestrian (by comparison) 8 cylinders and lower to be honest.

Optical engines typically have an acrylic or some sort of glass element to them so you can look at (albeit with a high speed camera) the combustion in real time.

[anonymous-user]

Mr-B said:

What a masterpiece! Probably one of the last of it's kind. What a swansong though.

I wonder if Merc are just a very tiny bit concerned that they opted to go with F1 technology (and crap sound) for their engine? Round 1 to AM.

The ironic thing about it as that in recent times, Aston's received much bashing for its technology partnership with Daimler for infotainment and use of the AMG M177 4.0 base engine. So when Aston collaborates with Cosworth to produce something as exotic as a naturally aspirated, 1000hp V12, that sounds as nature intended - it cant help but make the turbo hybrid V6 in the Project One, look and sound somewhat less special. The other thing to remember is that current F1 technology doesn't stand still, and the Project One's base ICE is from the 2016 F1 car, with a fair chunk of changes to make it viable for road use (valvetrain changes etc), while needing to be refurbed at 50k miles.

Of course, these are two very different approaches - small capacity 6 pot, forced induction with a lot of hybrid assistance, versus an old shool, large displacement V12 where the ICE does the majority of the work and the hybrid provides useful lowdown torque. Both are engineering feats above and beyond the regular, but for me, the Valkyrie engine appeals to the purist in me, more than the technical advancements brought in with the hybrid tech at AMG.

Edited by anonymous-user on Wednesday 12th December 16:19

[Esceptico]

jjwilde said:

Is no one going to mention that the engine has to be replaced after 62,137 miles?

If this was an EV people on here would be going crazy if the battery only lasted 62k.

Given expected annual mileage (of zero!) for most of the cars being bought that is still a long time. No doubt petrol engined cars will have been outlawed altogether before many get close to that figure

[SmilerFTM]

C7 JFW said:

How a supercar is supposed to sound! I look forward to hearing one on the road.

It's how F1 cars are supposed to sound never mind supercars