Honda 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.
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Sayeman
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Joined: 04 Sep 2015, 12:18
Location: Bangladesh

Re: Honda Power Unit

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The Honda PU seems to be better than the Renault PU right now...look at the top speeds.
Again we don't have any confirmation on whether Mclaren is running low DF or not.
So Redbull being faster than Mclaren with a Honda PU doesn't sound ridiculous. Horner wouldn't have chased Honda PU last year if they didn't believe in it's potential.
Never Give up.

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PlatinumZealot
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Joined: 12 Jun 2008, 03:45

Re: Honda Power Unit

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OviJohn wrote:
PlatinumZealot wrote:
Sasha wrote:The between the engine v Compressor is about maxed out now and Honda ICE is still far behind MB and Ferrari.(and it can not get bigger where it is now)

With a new Combustion Chamber it will need a bigger Compressor to make the power.(still needs a bigger compressor if stay with same combustion chamber to make more top-end power and better driveability)

18-20 tokens needed to do what is needed to the Honda PU.(Honda has 14)
Honda could get some done on reliability reasons.
Confirm?
If you review the video and stills posted here, along with following translations:

http://www.f1technical.net/forum/viewto ... start=3375

Seems like they´re pretty much out of working room for further TC expansion within the V
Ok. I see why you say that but geometry shows that you can fit circles of any radius inside a V. It is just a matter of how tall Honda would make the engine. The v6 is 90 degrees so if you put a circle in the v you can create an imaginary square from the centre of the circle to the edges to the corner of the V. The length of each side is equeal to the radius and Each bank is 45 degrees to horizontal. Soo.. For an extreme case,and assumingthat that there is absolutely no space clearance around the turbo in the Vee, a 30mm bigger turbo will increase the height of the top of the turbo by (30/2)mm/cos45 degrees +(30/2)mm= 21mm +15mm = 36mm.

So a 30mm increas in turbo size is huge.. But you can see the height increase of 36mm which will raise not just the Centre of the turbo the airbox and exhaust pipe and other things.... Is not impossible to design into the engine. And this is assuming that all space is already used up in the Vee.. i am not sure how detrimental the effect will be on car performance and packaging though. I am no expert..
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Sasha
Sasha
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Joined: 07 Jul 2013, 07:43

Re: Honda Power Unit

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Their compressor is about 30 cm long now.(kinda like a long and skinny multi-stage axial flow turbojet but it isn't axial flow or multi-stage).Just a tricky radial design to fit in the V of the engine and leave room for the adj. trumpets.

hurril
hurril
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Joined: 07 Oct 2014, 13:02

Re: Honda Power Unit

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Sasha wrote:Their compressor is about 30 cm long now.(kinda like a long and skinny multi-stage axial flow turbojet but it isn't axial flow or multi-stage).Just a tricky radial design to fit in the V of the engine and leave room for the adj. trumpets.
30cm? That sounds ... impossible almost. Where is this information from?

trinidefender
trinidefender
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Joined: 19 Apr 2013, 20:37

Re: Honda Power Unit

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hurril wrote:
Sasha wrote:Their compressor is about 30 cm long now.(kinda like a long and skinny multi-stage axial flow turbojet but it isn't axial flow or multi-stage).Just a tricky radial design to fit in the V of the engine and leave room for the adj. trumpets.
30cm? That sounds ... impossible almost. Where is this information from?
Mixed flow compressor

wuzak
wuzak
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Joined: 30 Aug 2011, 03:26

Re: Honda Power Unit

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hurril wrote:
Sasha wrote:Their compressor is about 30 cm long now.(kinda like a long and skinny multi-stage axial flow turbojet but it isn't axial flow or multi-stage).Just a tricky radial design to fit in the V of the engine and leave room for the adj. trumpets.
30cm? That sounds ... impossible almost. Where is this information from?
Indeed. That would make it about as long as the cylinder block.

hurril
hurril
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Joined: 07 Oct 2014, 13:02

Re: Honda Power Unit

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wuzak wrote:
hurril wrote:
Sasha wrote:Their compressor is about 30 cm long now.(kinda like a long and skinny multi-stage axial flow turbojet but it isn't axial flow or multi-stage).Just a tricky radial design to fit in the V of the engine and leave room for the adj. trumpets.
30cm? That sounds ... impossible almost. Where is this information from?
Indeed. That would make it about as long as the cylinder block.
Precisely. Where would the MGU-h go? Does the compressor housing curl around it? Is this out of thin air or does someone actually know something about this?

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PlatinumZealot
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Joined: 12 Jun 2008, 03:45

Re: Honda Power Unit

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He must have meant the whole turbo? Or MGUH? That number sounds strange. And where did he get such precise measurements? lol
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Sasha
Sasha
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Joined: 07 Jul 2013, 07:43

Re: Honda Power Unit

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Yes,Honda didn't break it down by part,it's the whole unit with shaft(not turbine)....sorry!

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diffuser
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Joined: 07 Sep 2012, 13:55
Location: Montreal

Re: Honda Power Unit

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I just think that if they need to make the compressor bigger at someone point they're just gonna let it herniate out the front. In my mind, that would be a logical progression.

If you look at those pictures earlier in this forum and compare last years PU to this years, The compressed cooled air is arriving from further forward that 2015. We no longer see the tube carrying the compressed air going to radiators. That suggests to me that things have also been pushed forward.

But what do I know.

NL_Fer
NL_Fer
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Joined: 15 Jun 2014, 09:48

Re: Honda Power Unit

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I saw the Honda rear light flash at the end of the back straight, which is very good. It means the ES is it depleted to early anymore, the bigger turbine seems to work.

hurril
hurril
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Joined: 07 Oct 2014, 13:02

Re: Honda Power Unit

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Sasha wrote:Yes,Honda didn't break it down by part,it's the whole unit with shaft(not turbine)....sorry!
Where are they saying this?

honda_fun
honda_fun
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Joined: 11 Apr 2016, 01:29

Re: Honda Power Unit

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https://www.hondarandd.jp/point.php?pid=1171&lang=en
They wrote 'These measures made it possible to realize Minimum advance for Best Torque operation
at a compression ratio of 17 and stable operation at an external EGR rate of 35%, helping to enable
the achievement of a maximum brake thermal efficiency of 45% in an actual single-cylinder engine.'

I think that introducing the technology into their F1 engine , the cooling EGR become required.
So Mcl-Honda signs multi-year partnership with Calsonic Kansei
https://www.calsonickansei.co.jp/englis ... 30901.html
https://www.calsonickansei.co.jp/englis ... ooler.html

r101
r101
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Joined: 31 Mar 2015, 13:44

Re: Honda Power Unit

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NL_Fer wrote:I saw the Honda rear light flash at the end of the back straight, which is very good. It means the ES is it depleted to early anymore, the bigger turbine seems to work.
I do not think this _must_ be the case (that they solved the problem completely), they could be runing 90%, (or whatever) of the power to keep ES from depleting to early. The difference in 1 lap speed and race speed is still noticable, but at least they now have the capability to put the hammer down for the whole lap. It is improving all the time.

Logie
Logie
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Joined: 06 Apr 2016, 11:39

Re: Honda Power Unit

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Yea we have no idea how much out put they are getting via ERS. But its nice to see like you said, depleting at the end of straight now. Means they have some grasp on it.

There was a time when a Williams overtook the McLaren. It got past on the straight, soon as the Williams was out the slip stream the McLaren was side by side again by the braking zone.

Williams either had better tires or more grip and still got around the hair pin though.

Seems unclear how they run the engine over a race when you think about fuel and ERS. They might be in a position where they can do a few laps getting the most out of it, then they have either a) increase harvesting or b) have a lower output when they deploy