peewon wrote: ↑
Mon Aug 09, 2021 1:56 pm
Blackout wrote: ↑
Fri Aug 06, 2021 12:58 pm
diffuser wrote: ↑
Thu Aug 05, 2021 2:46 pm
His comments about not having decided on which direction to go with the PU structure back in early 2021 (think it was Pre winter tests), left me with a bad taste in my mouth.
Which ones? his comments about the split-turbo, when he said "we're just evaluating that solution"?
Nah, maybe he was just refusing to admit that a simple forum member discovered they are secretly working on a split-turbo just by looking at one photo Viry published
(top center is the Honda and top right is the Merc - both pics come from F1i magazine/Nicolas Carpentiers)
Remi Taffin, Renault F1's engine chief, has confirmed that the team are considering the change of concept.
"The simple answer is yes," Taffin told RacingNews365.com among others. "We could be going down that route… I'm pretty sure you've seen some photos, so I'm not going to lie. We are evaluating it."
Taking nothing away from this excellent piece of work, but I thought they has been publicly discussing (and therefore hinting at) the split turbo move since the previous off season. I maybe mistaken about that.
AFAIR thee first time they publicly discussed the split turbo since 2014-2015 was in early march 2021, where Taffin said the above.
Before that, Taffin only talked about a change of architecture and a very different PU* while Abiteboul talked about "very big revolutions in the way we make the PU". both said that in 2019.
PREPARING FOR 2022
Viry's efforts, already looking ahead to 2022, are now focused on cooling and installing the engine in the chassis.
On the track," explains our contact, "we introduce a quantity of fuel into the engine that produces a little more than 1200 kW [power equivalent to 100 kg/h of gasoline]. Of this 1200 kW, about 600 kW comes out of the crankshaft, since the efficiency of the engine is 50%. This leaves another 600 kW. Of these 600 kW, 200 kW are taken from the turbine: part is used to compress the air (the compressor) and part is recovered by the MGU-H. Of the remaining 400 kW, 200 to 300 kW goes to the exhaust, which is 'stupidly' dispersed energy."
"The balance, about 150 kW, is dissipated into the car's coolants: engine water, transmission and hydraulic system oil, etc. If we were able to make the engine work at higher temperatures, we could reduce the surface area of the radiators (thus lowering drag), or even adopt architectures that would restrict the types of fluid and homogenize their temperatures."
"The  engine will be very different," concludes Rémi Taffin. We will significantly change the architecture, taking advantage of the fact that everyone will be starting from scratch."
https://f1i.autojournal.fr/magazine/mag ... ogresse/4/
Translated with www.DeepL.com/Translator
diffuser wrote: ↑
Mon Aug 09, 2021 9:29 pm
Blackout is in the "know". What happened to you, we hadn't seen many posts from you in a while ? There was a Blackout black out ?
Nothing special happened to me