Honda Power Unit Hardware & Software

[FW17]

The supposed Honda insider RolledaNsx says:



Friday PU was spec 2.5 (new > fuel, turbo, MGU-H, injectors and mapping)



Saturday / Sunday's PU was spec 2.2 (new > turbo and MGU-H)



Upcoming Spec 3.0 PU ("Will not see the whole new designed PU the soonest at Spa" - new > combustion chamber, pre-chamber heads and pistons)





Found the source: http://www.vtec.net/...&page_number=2

[Tommy Cookers]

[quote=gruntguru post].......The evidence leans pretty heavily in favour of lower revs, ie if the fuel rate is fixed from 10,500 to 15,000 rpm, the best efficiency and therefor best power should be at 10,500. There are several reasons:
1. ICE friction rises rapidly with rpm
2. In-cylinder heat loss as a percentage of total heat released in a single cycle decreases with load (heat release per cycle). Heat release per cycle reduces as rpm increases from 10,500 to 15,000 since the heat release per minute stays constant over that rpm range.
3. The turbomachinery has more surplus power (available to the MGUH) at higher pressure ratios. If AFR is maintained at a constant value (assuming there is an optimum AFR for ICE efficiency) the highest PR will be at 10,500.[/quote]

@gg
regarding 2.
what ?
regarding 3.
didn't your own calculations ultimately suggest that recovery essentially does not increase with PR ?
(because of the increase in compressor work with PR at the efficiencies available with the simple machinery mandated)

btw .....
wouldn't such steady-flow type calculations (wrongly) suggest blowdown (PR=1) 'free' power does not exist ?
with prechamber or other leaning there's less energy drop per kg but more kg, so maybe they would then also underestimate the recovery ?


and (anyone) - how can people running 13000 rpm be fuelling 100 kg/hr at 10500 rpm ?

[etusch]

There are many different news about same thing

Honda will bring another engine upgrade to the next race in Austria.
Although the Japanese manufacturer looks set to be dumped by its works partner McLaren, Honda took a minor upgrade to Azerbaijan last weekend.
And now, Honda chief Yusuke Hasegawa says the long-awaited ‘specification 3’ unit is due to run in Austria next weekend.

[SameSame]

There are many different news about same thing

Honda will bring another engine upgrade to the next race in Austria.
Although the Japanese manufacturer looks set to be dumped by its works partner McLaren, Honda took a minor upgrade to Azerbaijan last weekend.
And now, Honda chief Yusuke Hasegawa says the long-awaited ‘specification 3’ unit is due to run in Austria next weekend.

If they bring the new spec then they will have to take more penalties in Austria? And why are forum members saying it is not Spec 3 when Hasegawa said so himself?

[FW17]

There are many different news about same thing

Honda will bring another engine upgrade to the next race in Austria.
Although the Japanese manufacturer looks set to be dumped by its works partner McLaren, Honda took a minor upgrade to Azerbaijan last weekend.
And now, Honda chief Yusuke Hasegawa says the long-awaited ‘specification 3’ unit is due to run in Austria next weekend.

If they bring the new spec then they will have to take more penalties in Austria? And why are forum members saying it is not Spec 3 when Hasegawa said so himself?

If you read that article on GP.com, the portion about spec 3 is not a quote but an interpretation by the author.

[Nonserviam85]

The supposed Honda insider RolledaNsx says:



Friday PU was spec 2.5 (new > fuel, turbo, MGU-H, injectors and mapping)



Saturday / Sunday's PU was spec 2.2 (new > turbo and MGU-H)



Upcoming Spec 3.0 PU ("Will not see the whole new designed PU the soonest at Spa" - new > combustion chamber, pre-chamber heads and pistons)





Found the source: http://www.vtec.net/...&page_number=2

It has been implied earlier in the forum that RolledaNSX is actually Sasha.

[ArcticWolfie]

https://www.motorsport.com/f1/news/f1-h ... ku-924029/

Honda reckons its upgraded ‘spec 3’ engine delivered more than two or three tenths of a second worth of performance at Baku, matching data predicted by its dynos back at base.

That's some serious gain for that kind of circuit

“It should be alright so we expect to introduce spec 3 for both engines.

“Even if we don’t have a spare, there is no option - we need to run two ‘spec 3’ engines [in Austria].”

[SameSame]

There are many different news about same thing

Honda will bring another engine upgrade to the next race in Austria.
Although the Japanese manufacturer looks set to be dumped by its works partner McLaren, Honda took a minor upgrade to Azerbaijan last weekend.
And now, Honda chief Yusuke Hasegawa says the long-awaited ‘specification 3’ unit is due to run in Austria next weekend.

If they bring the new spec then they will have to take more penalties in Austria? And why are forum members saying it is not Spec 3 when Hasegawa said so himself?

If you read that article on GP.com, the portion about spec 3 is not a quote but an interpretation by the author.

Hasegawa:
Hasegawa said he hopes to have two 'spec 3' units ready to run for the next race in Austria, though he is unsure if Honda will have enough time to manufacture spares.

"We had a gearbox failure and we had some over-revs," said Hasegawa.

"We didn't see any issues, but we will check the engine in Sakura again.

"It should be alright so we expect to introduce spec 3 for both engines.

"Even if we don't have a spare, there is no option - we need to run two 'spec 3' engines [in Austria]."

http://www.autosport.com/news/report.ph ... aku-points

[godlameroso]

There are many different news about same thing

Honda will bring another engine upgrade to the next race in Austria.
Although the Japanese manufacturer looks set to be dumped by its works partner McLaren, Honda took a minor upgrade to Azerbaijan last weekend.
And now, Honda chief Yusuke Hasegawa says the long-awaited ‘specification 3’ unit is due to run in Austria next weekend.

If they bring the new spec then they will have to take more penalties in Austria? And why are forum members saying it is not Spec 3 when Hasegawa said so himself?

Only Vandoorne will take penalty for ICE, Alonso already served his ICE penalty in Baku, the new spec engine was trialed during FP1 and 2, but was not raced or qualified on.

[SameSame]

So according to Honda, they introduced Spec 3 in Baku? I though that was only part of the Spec 3 update in Baku, but if that was it and no new elements are introduced then it will be great to see them race penalty free =D>

Also, the MGU-H reliability seems promising after the Baku update

[etusch]

There are many different news about same thing

Honda will bring another engine upgrade to the next race in Austria.
Although the Japanese manufacturer looks set to be dumped by its works partner McLaren, Honda took a minor upgrade to Azerbaijan last weekend.
And now, Honda chief Yusuke Hasegawa says the long-awaited ‘specification 3’ unit is due to run in Austria next weekend.

If they bring the new spec then they will have to take more penalties in Austria? And why are forum members saying it is not Spec 3 when Hasegawa said so himself?

If you read that article on GP.com, the portion about spec 3 is not a quote but an interpretation by the author.

Name is not important. what we will except as update (as I understand) what they tested first two FP sessions. New Turbo and new fuel used Baku if I am not wrong. So may be A1 ring PU may not be much better than bakü. But still A1 ring version . 2, 0.3 sn better than bakü it will be wonderful.

[Big Mangalhit]

"During any single event, if a driver introduces more than one of a power unit element that is subject to penalty, only the last element fitted may be used at subsequent events without further penalty," said an FIA statement issued in the wake of Wednesday's WMSC meeting in Paris.

"This is to prevent the stockpiling of spare power unit elements."

Anybody knows if Alonso introduced the new spec and then reverted back to a previously used one? Cause if he fitted a new unused spec the 3.0 used in FP will still be subject to penalties come Austria. Anybody can shed some light

[DarkAlman]

So according to Honda, they introduced Spec 3 in Baku? I though that was only part of the Spec 3 update in Baku, but if that was it and no new elements are introduced then it will be great to see them race penalty free =D>

Wazari san said it was more like spec 2.2 or 2.5 so we should see a string of improvements up until Spa when the full 3.0 package is due to be delivered.

Using the engine in practice but not running the engine in last weekends race was a tactical move on their part to not get penalties in Austria. They knew that Azerbaijan was a power limited circuit that didn't suit the package so they figured the race was a write-off anyway.

But given how much of a gong show the Azerbaijan race was it's almost a shame they didn't run the new spec engine for Alonso. Once we see the time difference in the next race maybe someone can do the math to estimate if it would have made a big difference in the last race?

Also, the MGU-H reliability seems promising after the Baku update

DON'T SAY THAT!

[turbof1]

"During any single event, if a driver introduces more than one of a power unit element that is subject to penalty, only the last element fitted may be used at subsequent events without further penalty," said an FIA statement issued in the wake of Wednesday's WMSC meeting in Paris.

"This is to prevent the stockpiling of spare power unit elements."

Anybody knows if Alonso introduced the new spec and then reverted back to a previously used one? Cause if he fitted a new unused spec the 3.0 used in FP will still be subject to penalties come Austria. Anybody can shed some light

The spec3 introduced in Baku did not went over the allowed allocations. The spec2 introduced after that did. Only that latter got penalized, so he's allowed to keep the spec3.

[CLKGTR]

As far as I understand, Alonso will use spec 3 engine from Baku in Austria because it haven't sustained damage by overreving after a gearbox failure.

Vandoorne will get new engine in Austria, but won't get a penalty because he used three engines so far.

Power unit elements status: https://maxf1.net/en/honda-will-bring-s ... n-austria/