## 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.
Bence
10
Joined: Thu Jan 31, 2008 5:36 am

### Re: Honda Power Unit Hardware & Software

I'm cryin'...

PlatinumZealot
343
Joined: Thu Jun 12, 2008 2:45 am

### Re: Honda Power Unit Hardware & Software

godlameroso wrote:
Sun Jan 20, 2019 1:35 am
Mudflap wrote:
Sun Jan 20, 2019 12:09 am
You can't "harvest inertia" that makes no sense.

It does to me, harvesting/harnessing/collecting some of the inertia of the crankshaft by putting a load on it to generate electrical energy.
You mean kinetic energy.. Yeah sure you can harvest inertia like a snowball getting bigger.. but..
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godlameroso
333
Joined: Sat Jan 16, 2010 8:27 pm
Location: Miami FL

### Re: Honda Power Unit Hardware & Software

PlatinumZealot wrote:
Mon Jan 21, 2019 1:25 am
godlameroso wrote:
Sun Jan 20, 2019 1:35 am
Mudflap wrote:
Sun Jan 20, 2019 12:09 am
You can't "harvest inertia" that makes no sense.

It does to me, harvesting/harnessing/collecting some of the inertia of the crankshaft by putting a load on it to generate electrical energy.
You mean kinetic energy.. Yeah sure you can harvest inertia like a snowball getting bigger.. but..
This is a problem because words have limits to convey concepts sometimes, especially when it's a concept as nebulous as energy. There's mechanical energy, there's potential energy, kinetic energy, heat energy, chemical energy, electrical energy, and others we aren't privy to. All these different types of energy are present when the crankshaft is spinning. The MGU-K is interacting directly with the crank, and only the crank as stated in the regulations.

Since inertia is a component of rotational kinetic energy(Erot=1/2Iw^2), I don't think I'm wrong when I state that the MGU-K is syphoning or adding crank inertia.
The height of cultivation is really nothing special. It is merely simplicity; the ability to express the utmost with the minimum. Mr.Lee

gruntguru
432
Joined: Sat Feb 21, 2009 6:43 am

### Re: Honda Power Unit Hardware & Software

If you replace the words "crankshaft inertia" with mechanical energy (work) at the crankshaft, you would be OK. Mind you the source of the energy absorbed by the GUK is from the wheels via the transmission (vehicle kinetic energy) or from the crankshaft (engine output).

Crankshaft kinetic energy attributable to inertia of the spinning crankshaft can only be harvested by braking the engine to a lower speed and wouldn't amount to much anyway.
je suis charlie

godlameroso
333
Joined: Sat Jan 16, 2010 8:27 pm
Location: Miami FL

### Re: Honda Power Unit Hardware & Software

gruntguru wrote:
Mon Jan 21, 2019 4:06 am
If you replace the words "crankshaft inertia" with mechanical energy (work) at the crankshaft, you would be OK. Mind you the source of the energy absorbed by the GUK is from the wheels via the transmission (vehicle kinetic energy) or from the crankshaft (engine output).

Crankshaft kinetic energy attributable to inertia of the spinning crankshaft can only be harvested by braking the engine to a lower speed and wouldn't amount to much anyway.
As in upshifts?
The height of cultivation is really nothing special. It is merely simplicity; the ability to express the utmost with the minimum. Mr.Lee

gruntguru
432
Joined: Sat Feb 21, 2009 6:43 am

### Re: Honda Power Unit Hardware & Software

Yep.
je suis charlie

tok-tokkie
20
Joined: Mon Jun 08, 2009 3:21 pm
Location: Cape Town

### Re: Honda Power Unit Hardware & Software

When Honda is in 'extra harvest' mode it is the inertia of the turbine, mgu-h & compressor which is used to pass the energy between mgu-k & mgu-h by speeding up & slowing down a small amount but very rapidly.

Dr. Acula
32
Joined: Sat Jul 28, 2018 12:23 pm

### Re: Honda Power Unit Hardware & Software

tok-tokkie wrote:
Mon Jan 21, 2019 8:32 am
When Honda is in 'extra harvest' mode it is the inertia of the turbine, mgu-h & compressor which is used to pass the energy between mgu-k & mgu-h by speeding up & slowing down a small amount but very rapidly.
Well, you can discribe this also with adding and subtracting kinetic energy from the turbo charger. The moment of inertia doesn't change at all if you increase or deacrease the angular velocity. It's really just kinetic energy, running in a circle. This gets especially obvious if you look at the basic formulas to calculate it. $E\textsubscript{rot}=\frac{I*\omega^2}{2}$ looks suspiciously similar to $E\textsubscript{kin}=\frac{m*v^2}{2}$ doesn't it?

tok-tokkie
20
Joined: Mon Jun 08, 2009 3:21 pm
Location: Cape Town

### Re: Honda Power Unit Hardware & Software

Absolutely. Yes it is delta KE that does the transfer.

Godius
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Joined: Sat Mar 02, 2013 11:49 am
Location: NL

### Re: Honda Power Unit Hardware & Software

subcritical71
68
Joined: Tue Jul 17, 2018 7:04 pm
Location: USA-Virginia

### Re: Honda Power Unit Hardware & Software

Dr. Acula wrote:
Mon Jan 21, 2019 5:45 pm

Well, you can discribe this also with adding and subtracting kinetic energy from the turbo charger. The moment of inertia doesn't change at all if you increase or deacrease the angular velocity. It's really just kinetic energy, running in a circle. This gets especially obvious if you look at the basic formulas to calculate it. $E\textsubscript{rot}=\frac{I*\omega^2}{2}$ looks suspiciously similar to $E\textsubscript{kin}=\frac{m*v^2}{2}$ doesn't it?
As well, the units for moment of inertia are $I=kg*m^2$ and joules are $J=\frac{kg*m^2}{s^2}$, so could be re-written $J=\frac{I}{s^2}$.

taperoo2k
16
Joined: Fri Mar 02, 2012 4:33 pm

### Re: Honda Power Unit Hardware & Software

Big Tea wrote:
Mon Jan 07, 2019 6:26 pm
taperoo2k wrote:
Mon Jan 07, 2019 5:19 pm
It's about 1.5gb of data per 300km or so that's transmitted from the car to the pits via the ECU if I remember correctly. If the FIA were to ask for a more modern ECU that uses the latest advancements in chipset and processor design then the amount of data transmitted would likely increase significantly, meaning the top teams and manufacturers could afford the necessary processing power (and high speed internet connections) to mine the data properly to find useful pieces of information.

People moaning about F1 not being at the pinnacle of technology, should look at the way the manufacturers and teams use data to shape development. McLaren is using it's experience in F1 to help the NHS in the UK - https://www.mclaren.com/appliedtechnolo ... ealthcare/

On the whole it looks like Honda appears to be on the verge of getting everything lined up properly to produce a decent PU. Which is all I've wanted to see from the outset.

Is that the data sent 'as is' or compressed before transmission? Sounds very low.
That will depend on the speed of the connection as to if data compression needs to be used, if you have to compress data then you will need the computational power to decompress that data in a very short space of time to make sure engineers are seeing it in near enough real time.
I did find an article ahead of the start of
last year's opening race about the technology F1 teams use. https://www.zdnet.com/article/formula-1 ... -the-race/

I'm sure Red Bull's data analysis will help Honda improve the PU at a faster pace once they gel together at the race track. We will probably discover at some point in the future who got the data collection and data mining processes right in terms of PU Development. Guess this topic might need a separate thread.

Big Tea
57
Joined: Sun Dec 24, 2017 7:57 pm

### Re: Honda Power Unit Hardware & Software

taperoo2k wrote:
Fri Jan 25, 2019 1:51 pm
Big Tea wrote:
Mon Jan 07, 2019 6:26 pm
taperoo2k wrote:
Mon Jan 07, 2019 5:19 pm
It's about 1.5gb of data per 300km or so that's transmitted from the car to the pits via the ECU if I remember correctly. If the FIA were to ask for a more modern ECU that uses the latest advancements in chipset and processor design then the amount of data transmitted would likely increase significantly, meaning the top teams and manufacturers could afford the necessary processing power (and high speed internet connections) to mine the data properly to find useful pieces of information.

People moaning about F1 not being at the pinnacle of technology, should look at the way the manufacturers and teams use data to shape development. McLaren is using it's experience in F1 to help the NHS in the UK - https://www.mclaren.com/appliedtechnolo ... ealthcare/

On the whole it looks like Honda appears to be on the verge of getting everything lined up properly to produce a decent PU. Which is all I've wanted to see from the outset.

Is that the data sent 'as is' or compressed before transmission? Sounds very low.
That will depend on the speed of the connection as to if data compression needs to be used, if you have to compress data then you will need the computational power to decompress that data in a very short space of time to make sure engineers are seeing it in near enough real time.
I did find an article ahead of the start of
last year's opening race about the technology F1 teams use. https://www.zdnet.com/article/formula-1 ... -the-race/

I'm sure Red Bull's data analysis will help Honda improve the PU at a faster pace once they gel together at the race track. We will probably discover at some point in the future who got the data collection and data mining processes right in terms of PU Development. Guess this topic might need a separate thread.

BTW, those interested in OTT and coverage there is info here too
One test is worth a thousand expert opinions

godlameroso
333
Joined: Sat Jan 16, 2010 8:27 pm
Location: Miami FL

### Re: Honda Power Unit Hardware & Software

I wonder how much the power unit will improve just by having evolved components. The same way they made reasonable gains from redesigning the water pump, and cooling jackets, what other gains can come from a new airbox, or more efficient pumps(for fuel or oil), or a new scavenging system. A crankshaft that dampens the vibrations at a critical rpm range. Any developments made to their combustion process through cooperation with their fuel supplier. Going back to an unorthodox firing order, although by now I'm sure whatever they settled on is what they'll keep. Turbo and MGU-H optimization has to be worth something. In addition I'm also sure the 2019 power unit has also evolved the packaging, pushing the limits where they feel comfortable vs 2018. 2019 vs 2017 difference is night and day. 2017 was like the scrawny kid who just hit puberty, 2018 was where it's muscles started coming in and had a growth spurt, 2019 will be post growth spurt, having been in the gym every day.
The height of cultivation is really nothing special. It is merely simplicity; the ability to express the utmost with the minimum. Mr.Lee

Juzh
329
Joined: Sat Oct 06, 2012 7:45 am

### Re: Honda Power Unit Hardware & Software

godlameroso wrote:
Tue Feb 05, 2019 2:22 am
I wonder how much the power unit will improve just by having evolved components. The same way they made reasonable gains from redesigning the water pump, and cooling jackets, what other gains can come from a new airbox, or more efficient pumps(for fuel or oil), or a new scavenging system. A crankshaft that dampens the vibrations at a critical rpm range. Any developments made to their combustion process through cooperation with their fuel supplier. Going back to an unorthodox firing order, although by now I'm sure whatever they settled on is what they'll keep. Turbo and MGU-H optimization has to be worth something. In addition I'm also sure the 2019 power unit has also evolved the packaging, pushing the limits where they feel comfortable vs 2018. 2019 vs 2017 difference is night and day. 2017 was like the scrawny kid who just hit puberty, 2018 was where it's muscles started coming in and had a growth spurt, 2019 will be post growth spurt, having been in the gym every day.
Aren't you getting ahead of yourself? We basically know nothing about 2019 PU.