Honda Power Unit Hardware & Software

[Moose]

It looks pretty clear compressor at the front, MGU-H in ththe V and the turbine at the rear. However there is still a question about how they are connected.

The rules specify how they are connected - with a single shaft that spins in the same axis as them, at the same speed as them.

[Cale24]

http://i.imgur.com/UEEurxh.jpg

via formula1.com

Interesting to see this comparison and the route Honda have gone. Wonder how they compare as far as part replacing lead time goes. ie Which engine is easiest to work on?

As usual though the images are so miniature one can hardly see anything. Official f1 website is the online equivalent of a 4 year old Pirelli tyre-testing chassis.

[frosty125]

It looks pretty clear compressor at the front, MGU-H in ththe V and the turbine at the rear. However there is still a question about how they are connected.

The rules specify how they are connected - with a single shaft that spins in the same axis as them, at the same speed as them.

I thought the rules were open to clutches.

http://www.formula1.com/news/technical/2014/0/1176.html

[frosty125]

http://i.imgur.com/UEEurxh.jpg

via formula1.com

Interesting to see this comparison and the route Honda have gone. Wonder how they compare as far as part replacing lead time goes. ie Which engine is easiest to work on?

As usual though the images are so miniature one can hardly see anything. Official f1 website is the online equivalent of a 4 year old Pirelli tyre-testing chassis.

Other believe that the compressor is at the front.

[pimpwerx]

I think he was referring to this photo from Jerez.

https://thejudge13.files.wordpress.com/ ... ativi1.jpg

If the engine has been homologated, the FIA scrutineers will know what the engine config is like. Plus, doesn't that airbox split into two directions with the larger airflow going down the spine to the rear of the engine? Do we have anything other than that one image? With the Merc last year, there was a lot of info about its layout. I think if the turbo was split, we'd know something more definitive by now. PEACE.

[frosty125]

Yes the top airflow is for the radiators in the spine of the car one of which is for the gearbox and the other larger one is for the air to air intercooler IMO. The bottom airflow looks like it goes to the front of the engine where the compressorn would be.

EDIT

FIA would now know the layout however they would not release any details. The F1 tech articles do not have some special FIA insight.

[Sevach]

http://i.imgur.com/UEEurxh.jpg

via formula1.com

I have a hard time believing Honda went for the layout Ferrari just abandoned...

[wuzak]

It looks pretty clear compressor at the front, MGU-H in ththe V and the turbine at the rear. However there is still a question about how they are connected.

The rules specify how they are connected - with a single shaft that spins in the same axis as them, at the same speed as them.

I thought the rules were open to clutches.

http://www.formula1.com/news/technical/2014/0/1176.html

The rules are open to clutches - between the turbine and MGUH.

The link you have posted is wrong - the turbine can either drive the MGUH and compressor or just the compressor, but it can never power the MGUH alone. And the MGUH has to drive the Compressor and turbine.

The connection between the compressor and turbine can be an assembly (ie made up of multiple components), but the turbine, compressor and shaft system must rotate at the same angular velocity at all times.

[wuzak]

Also, this statement is wrong for the current era F1 engines:

the cooler this charge air is, the more power the engine will produce

The statement is correct for "traditional"turbo engines, as the cooler intake air is more dense, thus it will have a greater mass of oxygen and more fuel can be burned. That's why the extra power.

In the current era engines the mass air flow is no problem, but the fuel flow rate is limited. Cooling the air beyond that required to avoid detonation will not give extra power as no extra fuel can be used, and will have the effect of requirin a larger intercooler system which will negatively impact the aerodynamics (however slightly).

[mclaren111]

GP Times:

Honda have chosen to go their own way with the design of their 2015 power unit, dubbed the RA615H, and only time will tell if it pays off.

[alexx_88]

The arrangement seems similar to last year's Ferrari, the only difference being that Ferrari's MGU-H and compressor were located inside the V of the engine.

The f1.com article is not written by someone in the know, as Ferrari's layout is widely known to be the one above.

[frosty125]

Scarbs was told that MGU-H is definitely in the V...

[Del]

I thought the MGU-K in the Honda was in front (like the photos from page 32). I don't see any benifits if the mgu-h is sticking out along with the hot side of the turbocharger... actualy I even see design flaws in such a layout...
So if I have to guess, I would bet my money with the pics from page 32, and probably a Ferrari , Renault type of a turbocharger and MGU-H layout... aand the mgu-h is in the V...

[PlatinumZealot]

Does anyone realise this?!!

Where are connections to the intake plenum?!

They should be at least wrapping around the intake pipe.
They are out of sight!

Mercedes intake for comparison....



What is Honda doing here?..

[dren]

The upper is going to the cooler and the lower looks to go down to the front mounted compressor.