how much turbo pressure does today's f1 engines have?

All that has to do with the power train, gearbox, clutch, fuels and lubricants, etc. Generally the mechanical side of Formula One.
lawnmower
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Joined: 23 Jun 2017, 18:50

how much turbo pressure does today's f1 engines have?

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does anyone knows?

trinidefender
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Joined: 19 Apr 2013, 20:37

Re: how much turbo pressure does today's f1 engines have?

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Somewhere between 2.5 to 4.0 bar gauge pressure is what I seem to recall most calculations coming out at.

lawnmower
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Joined: 23 Jun 2017, 18:50

Re: how much turbo pressure does today's f1 engines have?

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trinidefender wrote:
05 Apr 2018, 21:32
Somewhere between 2.5 to 4.0 bar gauge pressure is what I seem to recall most calculations coming out at.
thanks, i think they have high compression ratio and low turbo pressure

trinidefender
317
Joined: 19 Apr 2013, 20:37

Re: how much turbo pressure does today's f1 engines have?

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That was bar (atmospheres) not psi, that's between 36 and 58 psi so in other words high turbocharger pressures as well

J.A.W.
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Joined: 01 Sep 2014, 05:10
Location: Altair IV.

Re: how much turbo pressure does today's f1 engines have?

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ATA is AFAIR, the correct metric, rather than bar - for forced induction pressure - values..
"Well, we knocked the bastard off!"

Ed Hilary on being 1st to top Mt Everest,
(& 1st to do a surface traverse across Antarctica,
in good Kiwi style - riding a Massey Ferguson farm
tractor - with a few extemporised mod's to hack the task).

Tommy Cookers
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Joined: 17 Feb 2012, 16:55

Re: how much turbo pressure does today's f1 engines have?

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most people talk of boost but mean absolute pressure
eg the 1988 F1 turbocharged engines were limited to 2.5 bar absolute not 2.5 bar boost

early in the current F1 Renault publicity material gave 3.5 bar (and we try to remember whether 3.5 bar abs or not)

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strad
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Joined: 02 Jan 2010, 01:57

Re: how much turbo pressure does today's f1 engines have?

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This part has always confused me:
The bar is a metric unit of pressure, but is not approved as part of the International System of Units (SI). It is defined as exactly equal to 100,000 Pa, which is slightly less than the current average atmospheric pressure on Earth at sea level.
I always thought it was one atmosphere. 14.7?
To achieve anything, you must be prepared to dabble on the boundary of disaster.”
Sir Stirling Moss

trinidefender
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Joined: 19 Apr 2013, 20:37

Re: how much turbo pressure does today's f1 engines have?

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Tommy Cookers wrote:
07 Jun 2018, 11:05
most people talk of boost but mean absolute pressure
eg the 1988 F1 turbocharged engines were limited to 2.5 bar absolute not 2.5 bar boost

early in the current F1 Renault publicity material gave 3.5 bar (and we try to remember whether 3.5 bar abs or not)
Renault didn't specify which they were referring to did they?

Maritimer
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Joined: 06 Sep 2017, 21:45
Location: Canada

Re: how much turbo pressure does today's f1 engines have?

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strad wrote:
07 Jun 2018, 21:55
This part has always confused me:
The bar is a metric unit of pressure, but is not approved as part of the International System of Units (SI). It is defined as exactly equal to 100,000 Pa, which is slightly less than the current average atmospheric pressure on Earth at sea level.
I always thought it was one atmosphere. 14.7?
The Bar is 14.5 psi, close to atmospheric average but not the same

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strad
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Joined: 02 Jan 2010, 01:57

Re: how much turbo pressure does today's f1 engines have?

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Thanks but I know that now. It's just that for most of my life I thought 1 BAR was 1 atmospheric pressure. wasn't till a few years ago that my mis-conception was pointed out to me.
Came up when I was talking with someone about how my supercharged cars pounds of boost compared with other machines that measure the boost in BARs.
To achieve anything, you must be prepared to dabble on the boundary of disaster.”
Sir Stirling Moss

gruntguru
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Joined: 21 Feb 2009, 07:43

Re: how much turbo pressure does today's f1 engines have?

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lawnmower wrote:
05 Apr 2018, 21:19
does anyone knows?
A bit less than this Cummins.

https://www.youtube.com/watch?v=kqVwHJPV-XE

See dyno runs at 3:00.
je suis charlie

lawnmower
-1
Joined: 23 Jun 2017, 18:50

Re: how much turbo pressure does today's f1 engines have?

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Why did not turbocharged + supercharged this way in 1980's turbo cars? Crankshaft could get power from exhaust gas

Image

J.A.W.
109
Joined: 01 Sep 2014, 05:10
Location: Altair IV.

Re: how much turbo pressure does today's f1 engines have?

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Likely due to free-wheeling F1 turbo-tech ~30 years back.. being far more simplistic/basic..

& those Napier high-efficiency* turbo-compound set-ups - were predicated on continuous/steady-state running..
with the excess jet-thrust generated** - also being useful for propulsion..

*& they were 'multi-fuel' engines.. capable of running on (low-test) gasoline/avtur/diesel - as required.

**Also able to employ reheat/after-burner mode - for extra take-off power.
"Well, we knocked the bastard off!"

Ed Hilary on being 1st to top Mt Everest,
(& 1st to do a surface traverse across Antarctica,
in good Kiwi style - riding a Massey Ferguson farm
tractor - with a few extemporised mod's to hack the task).

wuzak
434
Joined: 30 Aug 2011, 03:26

Re: how much turbo pressure does today's f1 engines have?

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lawnmower wrote:
08 Jun 2018, 04:00
Why did not turbocharged + supercharged this way in 1980's turbo cars? Crankshaft could get power from exhaust gas
Keithe Duckworth did propose a turbo-compound engine, but it didn't proceed as the FIA said it would be banned after it won its first race.

wuzak
434
Joined: 30 Aug 2011, 03:26

Re: how much turbo pressure does today's f1 engines have?

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strad wrote:
08 Jun 2018, 02:37
Thanks but I know that now. It's just that for most of my life I thought 1 BAR was 1 atmospheric pressure. wasn't till a few years ago that my mis-conception was pointed out to me.
Came up when I was talking with someone about how my supercharged cars pounds of boost compared with other machines that measure the boost in BARs.
Of course 1bar = 100kPa, and standard atmospheric pressure is 101.325kPa.

And 1 atmosphere (atm) = 101.325kPa

And it can be further confused - the pressure can be boost (pressure above standard or ambient pressure, depending on definition*) or Manifold Absolute Pressure (MAP).

The 1988 turbos were constrained to 2.5bar MAP, which is 1.5bar boost at sea level.

*In WW2 the British used boost, defined as pressure above the standard sea level air pressure (14.7psi). The Americans used MAP, measured in inHg. The Germans used Ata, which was a technical atmosphere absolute (ie not boost)