wuzak wrote: ↑14 Jul 2017, 09:56
Big Mangalhit wrote: ↑14 Jul 2017, 09:23
Anybody can enlighten me a bit more on the timeframe of the drawing of 2014 PU rules?
IIRC discussions began in 2009 for a 2013 introduction.
They were originally going to be inline-4's (this was Renault's preference - and to be fair to them, that's a road-car sized engine in much of the world).
Ferrari objected to the lack of cylinders, which is why they became V6's (although the same capacity), and the change to a V6 was settled in 2011 for a 2014 introduction. At the same time the initially-proposed rev-limit of 12K was lifted to 15K rpm, even though no F1 engine in the modern era will go there because of the fuel flow rate limit.
It's obvious to me that certain engine manufacturers were doing R&D on fuel-limited turbo engines for a long time before the rules were decided upon, so the dates of actual talks themselves are somewhat moot. If you're a manufacturer (eg. Mercedes) and you know you've cracked most of the hard stuff with very lean burning engines on little r&d models, you go into the meeting to decide the next engine formula with that in mind, and you make it happen.
This goes back to my last post about the political power between the engine manufacturers for the 2021+ formula. You can bet that the new formula (lighter engines, no more ERS-H) will play to someone's advantage.