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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Redragon
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Joined: 24 May 2011, 12:23

Re: Honda Power Unit

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Manoah2u wrote:
22 Aug 2017, 00:46
why not ? They will have to, if they can't beat Merc or Renault - or Ferrari for that matter, then what's the use in participating? They need to not only reach the same power level of the Merc engine, they need to even beat it.
They know this and though things went down the wrong path somehow early on, that doesn't mean that the theory behind it can't still get there.

They decided to change the entire engine concept exactly because of this last year or so, which saw this engine being brand new and essentially Honda doing it all over again from day 1. No way on earth they wouldn't have done that if they dont believe they can achieve what is neccesary - beating Merc in power.

You could very well assume that last year's engine would not be able to have been developed enough to beat Mercedes engine which offcourse is still developing and upgrading too. So that question could go for last year's engine and i'm inclined to answer that in that case, they wouldn't have made it. Hence we have a different engine with all the starting problems but which essentially still adheres to a potentially valid formula. Their development path is going better and better and offcourse a limit/cieling will be reached at some point, but the big question is where is that point and just how far are they right now?

Funny enough, the question might not be that it's questionable whether another update will bring another 40hp, after the one coming up now, but just how much more relative upgrades does Honda have in the pipeline, meaning, let's go all out positive and say sure, this upgrade will bring 30hp, then the 5th one will bring another 40hp [making it a step up of 70hp since Hungary] but there might even be another upgrade which would give them another 30hp.

offcourse one must also not forget that upgrades dont solely consist of bringing more power, as if it's a need for speed unlockable.

a lot is also down to driveability, fuel economy and reliability.

For example, next engine upgrade would be something that brings 30hp power, but not only that, but also improves fuel economy by a significant margin. Which would mean that in comparison, the current spec has that same fuel improvement, which means that they can now run that engine - without the additional 30hp added too - on more capacity [let's say hungary had a specification which had a theoretic 800hp but highly fuel consuming so they had to run it at 785 hp to finish the race. the fuel economy improvement then resolves that excessive fuel consuming problem and now they no longer need to de-tune the engine to 785 hp but can do a full race distance with the engine on it's fullest, meaning the full 800hp capacity is available. thus, they gain a couple of tenths.]

add to that that not only is the fuel problem solved, but the package also includes an upgrade where the heads at honda found a way to improve the cylinder heads [ just a total random example ] which would actually give the engine itself another 30hp of more power.

so then the net efficiency is that they not just get 30hp more with the new spec upgrade, but that this upgrade 'package' also includes that fuel problem correction that you get a net boost of 45 hp over the engine ran before that upgrade.

in other words, that engine now has 830 hp vs the race before the previous spec had 785. that's a big difference.

if in the meantime there is also a simulation which says that if they replace the piston design or the valve design or whatever with a bit different one, it'll bring them another 40hp. - i know it's not that simple, but let's just keep it easy to paint a picture - and now you get to a total of 870 hp [ICE only] where you, a couple of races/specs ago, only had 785. a 85 hp total gain.
that package also completely resolved the vibration issues of before so now you can mount that originally intended super-ERS you secretly developed but couldnt use because the vibrations murdered the cr*p out of its life, and you have an ERS that brings you a whopping 300hp additionally.

yes i'm exegerating.

the point is, it's like a domino effect. once , there was a vibration issue that wasnt calculated in before. that vibration destroyed the hybrid electric part of the engine which saw the need of replacing that with something that could take more vibration at the cost of a lot of power and reliablity still. now you've also downtuned the engine by far to minimize that vibration - it's not gone, it's effect is just less. like having unbalanced wheels and not hitting the 100kph mark which keeps the steering wheel [ and wheels offcourse] from vibrating on the highway. the problem is still there, but you don't notice it if you keep under 100kph.

finally you have fixed the vibration issue, start running again, and see that it is gone. you still havent brought back that hybrid electric part that initially got shattered, so you do that too and boom, you propel yourself a good amount forward.

so a really long story short;

i actually wouldn't be suprised to see a 30ph or 40hp increase.
The spanish press Marca reflects a Hasewaga interview for Racer.com where he said there are 2 or 3 updates more this year. And Marca speculates that the update for Spa will bring other 15hp so since Baku the engine if everything is fine and speculations are right would have gained 30 hp http://www.marca.com/motor/formula1/201 ... b468d.html

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MrPotatoHead
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Re: Honda Power Unit

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Everyone really needs to stop talking about updates bringing xxxbhp.
Peak power doesn’t mean much in this formula. It’s about power under the curve vs fuel usage.
Of course peak power matters but Honda could introduce a new spec with the exact same peak power and be much quicker around the track.

Honda will continue to move forward throughout the year.
McLaren will use Honda in 2018.
Alonso will score a podium before the end of 2017 and announce he will stay with McLaren for 2018.

Can we get back to facts and technical analysis now please? 😘

gruntguru
gruntguru
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Re: Honda Power Unit

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MrPotatoHead wrote:
22 Aug 2017, 02:23
Alonso will score a podium before the end of 2017 and announce he will stay with McLaren for 2018.

Can we get back to facts and technical analysis now please? 😘
So is your first sentence a fact, technical analysis or the last piece of speculation before we get on with the facts and technical analysis? :wink:
je suis charlie

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MrPotatoHead
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Re: Honda Power Unit

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gruntguru wrote:
22 Aug 2017, 03:33
MrPotatoHead wrote:
22 Aug 2017, 02:23
Alonso will score a podium before the end of 2017 and announce he will stay with McLaren for 2018.

Can we get back to facts and technical analysis now please? 😘
So is your first sentence a fact, technical analysis or the last piece of speculation before we get on with the facts and technical analysis? :wink:
Haha not sure if speculation or hopes and dreams?

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Craigy
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Re: Honda Power Unit

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MrPotatoHead wrote:
22 Aug 2017, 02:23
Everyone really needs to stop talking about updates bringing xxxbhp.
Peak power doesn’t mean much in this formula. It’s about power under the curve vs fuel usage.
Of course peak power matters but Honda could introduce a new spec with the exact same peak power and be much quicker around the track.
Agreed.

I'd actually go a step further and say that given the constraints, it's entirely possible that the peak power number comes down and the overall car pace can still be better with a PU that gives a smaller peak number, but the power is available for longer.

A PU optimised for peak power is not necessarily the fastest way around the track - especially in race trim. This doesn't only apply to Honda, or even to F1.

Joseki
Joseki
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Re: Honda Power Unit

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https://www.motorsport.com/f1/news/hond ... ch-943360/

Hasegawa:

"We are changing our way of development, we're not too much insisting on mono-cylinder [dyno] development. We can check factors or elements or many concepts with the mono-cylinder [block] but we now understand we need to check with the V6 to finalise our specification. So we are no longer relying too much on the mono-cylinder results. As a reference, the mono cylinder test is important but to find the performance, we need to check the V6 results."

"The MGU-H failure took a very long time to solve, we had many small issues in the engine - and that area is difficult to understand on the dyno. We are about to solve that [MGU-H] issue, we just need to confirm on the circuit. But the MGU-H specification we have introduced includes solutions for the problem so I believe it's OK."

ZakB
ZakB
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Re: Honda Power Unit

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It seems that Honda just assumed it should work, well it at least seems that they are finally on the right path.

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MrPotatoHead
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Re: Honda Power Unit

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It seems they now agree with what I was saying months ago about the reliance on single cylinder testing.

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dren
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MrPotatoHead wrote:
22 Aug 2017, 14:45
It seems they now agree with what I was saying months ago about the reliance on single cylinder testing.
We have no clue when Honda changed their approach. Honda said it wasn't seeing the single cylinder results transfer to the PU during development, so I'd assume they changed back then.
Honda!

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bigblue
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Joined: 01 Oct 2014, 12:18

Re: Honda Power Unit

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Don't over-analyse each word - it's come via translation or at the very least from a non-native English speaker. It was apparent before the season that something had gone wrong in the mono to six cylinder scale-up, that's been stated before. Honda had assumed on past experience that this would probably work out, but it really seems to have gone badly. I think they realised there and then that things had to change, and this 'news' article is just recapping that, and reinforcing it - perhaps with some more experience through the season of the sensitivity of the current designs to being developed into a full engine. You can debate whether this was obvious all along, but I'd guess not, certainly previous experience or something else made Honda think it would work out. What's not in doubt is that the end result has been pretty painful, hopefully they're on a big upswing now.

restless
restless
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Joined: 10 May 2016, 09:12

Re: Honda Power Unit

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How possible is it in Friday one car to run with old spec and the other with new spec?
Validating and comparing...
I guess if they have even slightest doubt over updates, will try to make direct on track comparison

gofast182
gofast182
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Re: Honda Power Unit

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restless wrote:
22 Aug 2017, 18:58
How possible is it in Friday one car to run with old spec and the other with new spec?
Validating and comparing...
I guess if they have even slightest doubt over updates, will try to make direct on track comparison
Isn't that exactly what they did, or tried to do, in Baku?

gofast182
gofast182
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It's funny, not as much on this site but elsewhere on the net, to see people savage Honda for the single cylinder model as if they're smarter and could've done it better from the start: they are not and they could not have. Anyone who works in a field where R&D is done and the final assembly/product has multiple repeated structures/elements in it understands that you almost always do proof-of-concept on 'subset models' for the benefits of turnaround time, ease of analysis, and cost as you do iterative development. In most cases, a lot can be gleaned from these 'subset models' but in some cases, they do not translate to scale assembly, which is what Honda has found in this instance. Honda has learned and has moved on. Were they silly for attempting to develop this way in the first place? No, and anyone who thinks they are does not know as much as they think they do.

Goosey
Goosey
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Joined: 22 Aug 2017, 19:41

Re: Honda Power Unit

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Apparently Honda were using "Spec 4" throughout the whole Hungarian test.

Not totally sure if that means spec 3 with revised turbo and MGUH or the spec 4 with revised CC concept.

Guess we may find out more this weekend :)

restless
restless
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Re: Honda Power Unit

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source about "spec 4 in Hungary"?
or "educated guess" ? :)