Engine Rules 2400cc for 2014 ?

[Tommy Cookers]

What types of engine might result if the 2014 rules were relaxed wrt maximum displacement but unchanged in other respects ?

Given that FIAT make many significantly powerful and very efficient twin cylinder engines, should the minimum number of cylinders also be relaxed ?

(Ferrari have a 2.5 litre twin already, of course, from 195?)

[WhiteBlue]

I hope you are aware that your idea isn't supported by any realistic activities from F1 stakeholders. If the turbo engine plan fails they will most likely keep the current frozen engines. It is the most simple thing to do to avoid a cost race or marketing problems.

[Ian P.]

What would happen ..... not a thing.
So long as the current regulation for fuel flow and materials remains the same, there won't be any increase in power output.
You could go from 1.6 L to 6.1 l but so long as you don't permit any additional fuel beyond the current limit of 100 kg/Hr at 10,500 rpm and up, no change in output.
Could quite well be that a 4 cylinder 1.6 L engine would be more efficient, but just try to sell that idea to Mercedes, Ferrari or Nissan. Good luck.

[Tommy Cookers]

The (capacity) rules currently force a certain level of induction pressure aka boost, relaxing the capacity limit would allow different combinations of boost and capacity, still aimed at getting the best out of the permitted fueling.

Lower boost/greater capacity might be closer to real world application.

In principle, boost and (electric) compounding are seperate factors.

Shouldn't it be possible to allow a low boost mechanical supercharger (or normal aspiration) with compounding ? (or low boost turbocharging)

The compounded aircraft engines had mechanical superchargers and compounding via seperate power recovery turbines.

[Nando]

They should have made it more open...

Like BMW if they had built their V8 with as open regs as V10 era then their engine would have weighed only 69kg's!

[gruntguru]

If the displacement and 6 cylinder rules were relaxed we would probably see smaller engines. Perhaps 1 litre 3 cylinder or thereabouts.

[Edis]

What types of engine might result if the 2014 rules were relaxed wrt maximum displacement but unchanged in other respects ?

Given that FIAT make many significantly powerful and very efficient twin cylinder engines, should the minimum number of cylinders also be relaxed ?

(Ferrari have a 2.5 litre twin already, of course, from 195?)

It could be beneficial to increase displacement while lowering boost pressure, but this depends on how knock limited the engines are, what gains could be had from increased compression ratio and reduced compressor power requirement (and charge cooling). The downside would be a larger engine and higher frictional losses.

Production engines tend to be optimized for part load efficiency at the expense of efficiency at high load.

Large cylinders tend to knock easier due to longer burn durations.

They should have made it more open...

Like BMW if they had built their V8 with as open regs as V10 era then their engine would have weighed only 69kg's!

That also made them expensive to produce. To keep weight down the wall thickness in the castings had to be kept to a minimum, so if your for instance wanted to change the design of the port in the cylinder head you had to make a new cylinder head casting.