[willyt]

1.0 litre 3 cyl petrol engine in my car makes 120hp and gets 50mpg extra urban. It has dynamic servicing and first service is currently shown as 550 days away. Obviously the 2.0 konigsegg makes 5 times the HP, but maybe double the cylinder volume and half the service time and you can ramp up the compression enough to multiply the hp by 5?

[ska]

That's relatively low hp for the displacement, so it's harder to extrapolate.

For another comparison the 3 cylinder 765cc engine from Triumph (street version) does about 120 or 125 with a red line of 12.5k if I recall correctly. In racing form (i.e. the moto2 engine version) it pushes about 140 (I think mostly via tuning and a bit higher red line). This is naturally aspirated but probably a good rough guestimate for bounds of what you can do on regular fuel and air. This also shows you why just ramping up the compression won't get you there, you need to change the air pressure too. For the street version of the triumph engine the service interval is something like 10k miles, valves every 2nd one.

If you scale that linearly you still "only" get close to 350 , so you have an idea of how much stress is on this design to push 600 on 2l.

By comparison the inline 4s in motogp make 250+ from 1 liter, so that's getting closer. They do probably represent something close to what is possible without induction though.

[consp]

> If you scale that linearly you still "only" get close to 350 , so you have an idea of how much stress is on this design to push 600 on 2l.

-Removed, I misunderstood the original post, still you can design an engine with more power if torque requirements are low, and they claim 280hp at 2l which is a lot but doable if you don't intent to run it like a roadcar and have infinite budget like with those super/hypercars-

[ska]

updated:

Agree low torque requirements help, which has a lot to do with the rest of the drivetrain, i.e. how you want to actually deliver power and at what speeds.

[hinkley]

The article says 600 hp on high test fuel, 500 hp on conventional, but that’s still 167 hp per cylinder which is nuts.

[sgt]

That's impressive. My car has a 4 liter V6 gasoline engine making 264hp, but fuel consumption is more like 17mpg.