inox wrote: It is quite obvious that current engines would not be able to handle 1000 Bhp without modifications. They could probably increase fuel flow slightly without reliability issues, but according to current power estimates (ICE 700 Bhp + ERS 160 Bhp) the fuel flow would need to be increased by 20% to reach the 1000 Bhp level.
I don't think they will be as far away as you think.
One of the things which is really difficult to deal with from a reliability point of view is heat, and with a fuel flow limited formula, running as lean as possible does nothave the scope for adding fuel for cooling purposes. If they are running AFRs in the region of 14:1, then a change to 12.5:1 would lower combustion and exhaust temps significantly.
The added advantage of adding more fuel is that you get more mass exhaust flow at a lower temperature. This will be a benefit to MGU-H of which the generation of power is not limited by the regulations.
We could end up with a situation where we increase boost by 20% and fuel by 25% and get an extra 140hp from the ICE and as a consequence of this you are generating more power from the MGU-H directly chanelled to MGU-K allowing you to use less ES at WOT and therefore allowing the MGU-K to run at a the highest duty for more of the time. All of the time having lower combustion temps and EGT.
Altenatively, a 10% increase in fuel flow and RPM limt of 12000 would get you over 800hp from the ICE alone.