Renault Power Unit Hardware & Software

All that has to do with the power train, gearbox, clutch, fuels and lubricants, etc. Generally the mechanical side of Formula One.
Ground Effect
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Re: Renault Power Unit Hardware & Software

Post by Ground Effect » Thu Jan 31, 2019 6:03 pm

GoranF1 wrote:
Thu Jan 31, 2019 5:28 pm
_cerber1 wrote:
Thu Jan 31, 2019 5:28 pm
GoranF1 wrote:
Thu Jan 31, 2019 5:15 pm
1013hp
Really?
1013.7
Didn't know GoranF1 was a comedian :D
Q: (Stefano Mancini – La Stampa) Kimi, will you help Vettel to win his championship this year?
Kimi Raikkonen: I can only drive one car, obviously. 
@2018 Singapore Grand Prix drivers press conference.

saviour stivala
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Re: Renault Power Unit Hardware & Software

Post by saviour stivala » Thu Jan 31, 2019 10:37 pm

Blackout wrote:
Thu Jan 31, 2019 3:42 pm
Found a rear view of the 2017 engine displayed at the Paris motor show.
Exhausts look fake (no race exhausts) but turbo might be the real one. Twin entry turbine
https://servimg.com/view/14795526/2341
Aren’t all four power units turbocharger turbine scroll twin entry?. or better put, which of the four power units uses a single entry turbocharger turbine scroll?.

carisi2k
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Re: Renault Power Unit Hardware & Software

Post by carisi2k » Fri Feb 01, 2019 1:20 am

Blackout wrote:
Thu Jan 31, 2019 5:34 pm
990hp (2018) + 60hp (winter) = 1050hp
since when did Renault have 990hp in 2018. Try 950hp for 2018 because if Renault had 990hp then a Red Bull Driver would have been world champions in 2018.

PlatinumZealot
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Re: Renault Power Unit Hardware & Software

Post by PlatinumZealot » Fri Feb 01, 2019 2:44 am

Compared to last year sounds you can tell the injection pattern and TJI is much different.
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djos
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Re: Renault Power Unit Hardware & Software

Post by djos » Fri Feb 01, 2019 8:12 am

PlatinumZealot wrote:
Fri Feb 01, 2019 2:44 am
Compared to last year sounds you can tell the injection pattern and TJI is much different.
It certainly sounds quite different, much more gutteral!
The impossible often has a kind of integrity which the merely improbable lacks.

saviour stivala
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Re: Renault Power Unit Hardware & Software

Post by saviour stivala » Fri Feb 01, 2019 8:47 am

PlatinumZealot wrote:
Fri Feb 01, 2019 2:44 am
Compared to last year sounds you can tell the injection pattern and TJI is much different.
TJI? is it possible for them to be using 'TJI' upside down and so sounding so muck different?.

hurril
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Re: Renault Power Unit Hardware & Software

Post by hurril » Fri Feb 01, 2019 9:23 am

PlatinumZealot wrote:
Fri Feb 01, 2019 2:44 am
Compared to last year sounds you can tell the injection pattern and TJI is much different.
Would you like to speak more about this? I'm very curious!

PhillipM
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Re: Renault Power Unit Hardware & Software

Post by PhillipM » Fri Feb 01, 2019 3:08 pm

I would think at that kind of low speed and load you're more likely to be hearing valvetrain/harmonic changes than combustion. The change in noise could be as simple as new exhaust manifolds and cam changes to suit.

Big Tea
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Re: Renault Power Unit Hardware & Software

Post by Big Tea » Fri Feb 01, 2019 7:23 pm

microphone location too can have an effect, as can reflections
One test is worth a thousand expert opinions

toraabe
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Re: Renault Power Unit Hardware & Software

Post by toraabe » Sat Feb 02, 2019 12:21 pm

PhillipM wrote:
Fri Feb 01, 2019 3:08 pm
I would think at that kind of low speed and load you're more likely to be hearing valvetrain/harmonic changes than combustion. The change in noise could be as simple as new exhaust manifolds and cam changes to suit.
Could also be a different firing order and completely different manifold and turbo. The higher pitch indicate that they have managed to even out the pulses even though those engines has uneven firing order. That is important to do to make the turbine more effective. They have got some people both from Ferrari and Mercedes. .. Not few went from Renault to Mercedes and perhaps they are coming back...

subcritical71
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Re: Renault Power Unit Hardware & Software

Post by subcritical71 » Sat Feb 02, 2019 8:01 pm

Interesting Renault are not the first ones to have first fire :oops: (on a Renault PU). Unless of course I missed it somewhere...

Tommy Cookers
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Re: Renault Power Unit Hardware & Software

Post by Tommy Cookers » Sat Feb 02, 2019 8:37 pm

toraabe wrote:
Sat Feb 02, 2019 12:21 pm
Could also be a different firing order and completely different manifold and turbo. The higher pitch indicate that they have managed to even out the pulses even though those engines has uneven firing order. That is important to do to make the turbine more effective....
when Renault last had a 90 deg V6 with a single turbo they used a longer runner length on one bank than on the other bank
so afaik (at design rpm) left bank exhaust pulses arrived at the turbo exactly out of phase with right bank exhaust pulses
ie 6 evenly-spaced exhaust pulses per cycle to the turbo
this would require exhaust path lengths of about 20 cm difference between left bank and right bank

a twin-turbo V6 has 3 evenly-spaced exhaust pulses
emulating this spacing would require in the current cars about 60 cm difference in exhaust path lengths

where exhaust pipes merge just upstream of the turbo there is presumably also a central divider
Last edited by Tommy Cookers on Tue Feb 05, 2019 12:18 pm, edited 1 time in total.

Blackout
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Re: Renault Power Unit Hardware & Software

Post by Blackout » Sun Feb 03, 2019 10:52 am

saviour stivala wrote:
Thu Jan 31, 2019 10:37 pm
Blackout wrote:
Thu Jan 31, 2019 3:42 pm
Found a rear view of the 2017 engine displayed at the Paris motor show.
Exhausts look fake (no race exhausts) but turbo might be the real one. Twin entry turbine
https://servimg.com/view/14795526/2341
Aren’t all four power units turbocharger turbine scroll twin entry?. or better put, which of the four power units uses a single entry turbocharger turbine scroll?.
Renault used a single entry turbine from 2014 until... I dont know

PlatinumZealot
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Re: Renault Power Unit Hardware & Software

Post by PlatinumZealot » Sun Feb 03, 2019 4:53 pm

Blackout wrote:
Sun Feb 03, 2019 10:52 am
saviour stivala wrote:
Thu Jan 31, 2019 10:37 pm
Blackout wrote:
Thu Jan 31, 2019 3:42 pm
Found a rear view of the 2017 engine displayed at the Paris motor show.
Exhausts look fake (no race exhausts) but turbo might be the real one. Twin entry turbine
https://servimg.com/view/14795526/2341
Aren’t all four power units turbocharger turbine scroll twin entry?. or better put, which of the four power units uses a single entry turbocharger turbine scroll?.
Renault used a single entry turbine from 2014 until... I dont know
It was always twin scroll. You may have seen a single flange turbine, but it still has two entries in it. It would be very foolish to use a single entry turbine for a six cylinder engine.
"The true champions are also great men. They are capable of making difficult decisions, of admitting their mistakes and of pushing harder than before when they get up from a fall."

- Ferrari chairman Sergio Marchionne

ispano6
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Re: Renault Power Unit Hardware & Software

Post by ispano6 » Sun Feb 03, 2019 6:12 pm

I'd be super surprised if Renault doesn't have teething problems with their new engine architecture. We'll soon see how much know-how Marcin Budowski took with him. He claims what he knows is of no value or already banned, but when only your power steering is the same, you know something is up. He should have been on leave until the next Formula change. In any case, any progress from this team will be looked at with raised eyebrows and skeptisim.