I was just thinking of the Physics of 2.0l engine what is the limit, My thoughts is there is a limit. There is only so much air (not oxygen) you can push into 2.0 engine no matter what the V.E. the engine has. So what is the limit forget fuel, is 1000 bhp possible. I think it cannot be done with out adding oxygen eg NOS


Your Thoughts?

 

1000 BHP would be easy to hit

the only thing that limits a turbo engine is its mechanical strength and heat (words of a much wiser man than me )

 

In theory, if you could build something like a billet block, special rods, pistons etc and money was no object how high could you get the power? Surely the limiting factor would be the valve size? Or could you just keep upping the size of the turbo to force air into the engine at higher pressures?

 

Correct me if I am wrong, but you can only compress a certian amount air in a confind place. eg there will be a point were the cylinder cannot take any more Air?

 

If you compress it enough it will turn to liquid. I'm sure a turbo couldnt produce anywhere near that kind of pressure tho. I doubt thats going to be the limiting factor

 

That will be mr. Duckworth i presume

If you look at the BMW F1 turbo engines, the limiting factor was not the amount of air, but fuel. I've read somewhere they needed to use rocket-fuel in these engines and managed 1400BHP on 1500cc.
Also, top-fuel dragsters manage something like 1000BHP per litre, so if u could use whatever kind of fuel and reliability is not important, 1500 BHP could be possible. More realistically, i think 1000BHP would be the limit.

 

Surely, assuming an ideal physical engine, it depends only upon max RPM, and the burn speed of the fuel?

Neil.

 

burn speed would dictate the max rpm!

 

but once you reach the limit of how much you can put in you add revs! so MORE power!

 

so If you pump 1000 psi in a engine of say 2.0l you will need to to rev like a bastard to consume the air.

so if your rev limit is 7k there is a limit correct?

 

But if, in theory you could make the components/engine bullet proof it could withstand silly revs not just a measly 7k

 

Gareth - what would happen if you changed the size/shape of the combustion chamber?

Less volume=less time for the flame front to hit the piston=higher rev ceiling?

 

not really,, you would have a higher comprssion ratio,, so you would really need more advance in there aswell

 

Cool

Neil.

 

I'd reckon on heat and the fueling at high rpm would be the problem

 

it's a but pointless this thread. if u take out, heat, flow limits of the head, strength.... then the power output becomes infinite lol - the capacity has sod all to do with it.

 

Yes Rick is right.

 

old formula one turbo engines made 1400bhp or so from 1.5 litres

next question?


LOL

 

yes chip I was being a bit thick forgetting the fooking engine REVs just focusing one on cylinder stroke