Honda Power Unit Hardware & Software

[f1motta]

Changes made by Honda in their combustion chamber (on the right):

[cheeRS]

Cylinder plating - Honda's secret weapon. Amazing job did in small workshop in Kumamoto factory unlocked their full potential.

https://i.imgur.com/YMy2cDf.jpg

Where could watch said video?

[f1motta]

New engine head cover (more compact, smaller & lighter) - different camshaft position:

[f1motta]

Cylinder plating - Honda's secret weapon. Amazing job did in small workshop in Kumamoto factory unlocked their full potential.

https://i.imgur.com/YMy2cDf.jpg

Where could watch said video?

NHK on demand platform.

[subcritical71]

Cylinder plating - Honda's secret weapon. Amazing job did in small workshop in Kumamoto factory unlocked their full potential.

https://i.imgur.com/YMy2cDf.jpg

Where could watch said video?

NHK on demand platform.

Rocker cover
Left RA621H prototype Right RA620H
https://i.imgur.com/xovrkcg.jpeg

https://i.imgur.com/gMFBI9t.jpg
https://i.imgur.com/3qZQV8c.jpg
https://i.imgur.com/pL1A0oE.jpg

Left: RA620H Right: RA621H prototype
https://i.imgur.com/BK1HOEG.jpg
https://i.imgur.com/E6JE2Xp.jpg
https://i.imgur.com/tFzVbdF.jpg

https://i.imgur.com/xYsaw4a.jpg
https://i.imgur.com/FUhILgx.jpg
https://i.imgur.com/9MaOsin.jpg

Source:
https://www.nhk-ondemand.jp/goods/G2021113012SA000/

[hUirEYExbN]

New engine head cover (more compact, smaller & lighter) - different camshaft position:

https://pbs.twimg.com/media/EyOpL9SW8AM ... name=large

https://pbs.twimg.com/media/EyOpL9iWUAY ... name=large

https://pbs.twimg.com/media/EyOpL-jXIAA ... name=large

https://pbs.twimg.com/media/EyOpL_SWEAI ... name=large

These were already posted and have been talked about for the last 3 pages.

viewtopic.php?p=962727#p962727

[ispano6]

New engine head cover (more compact, smaller & lighter) - different camshaft position:

https://pbs.twimg.com/media/EyOpL9SW8AM ... name=large

https://pbs.twimg.com/media/EyOpL9iWUAY ... name=large

https://pbs.twimg.com/media/EyOpL-jXIAA ... name=large

https://pbs.twimg.com/media/EyOpL_SWEAI ... name=large

These were already posted and have been talked about for the last 3 pages.

viewtopic.php?p=962727#p962727

It's important to note that it is not the actual engine head cover of the RA621H. It is in fact a prototype and sample head cover meant for the purposes of showing the difference in size. The actual head cover is different and hasn't been revealed.

[f1motta]

Sorry guys, I missed that page. Here are my notes after watching this video. I hope this time you will find something interesting:

1. The elements that limited Honda were cylinders and the lack of resistance to the forces acting on them - temperature and friction.

2. The experience of Honda Motor engineers was used, who developed their own technology of strengthening the cylinder surface by creating or applying an appropriate coating. For the new power unit, they developed a recipe that made the cylinders five to ten times more resistant than that used in Honda motorcycles.
According to the information provided in the video, they checked the strength of the new cylinder shell in Abu Dhabi 2020, allowing the use of full power. The test was passed, so it was possible to think about solutions to improve performance.

3. Honda has been analyzing the old unit for months and has been looking for areas to improve performance. Japanese specialists quickly concluded that a complete reconstruction was necessary. Having, at least theoretically, certain that the new coating would protect the cylinder from excessive wear, they reached for a new shape of the combustion chamber allowing for a greater degree of compression. This has been achieved by reducing the angle at which the valves are positioned. This operation resulted in the camshafts getting closer to each other. This, in turn, allowed for a more compact design.

4. The increase in unit efficiency, however, had a side effect - the amount of "lost" energy that went to the exhaust system and then powered the turbine decreased. Here again the HondaJet specialists came to the rescue. A redesign of the blade shape allowed the MGU-H system to perform efficiently despite the lower exhaust energy.

5. More attention in this video has been given to Toro Rosso/AlphaTauri than to Red Bull.

--- Last two are from f1.com ---

6. The use of new materials for the construction of the engine block allowed to reduce the distance between the cylinders (bore pitch). This was another area that allowed the engine size to be significantly reduced and the center of mass to be lowered.

7. Lowering the center of mass and the size of the unit allowed Alpha Tauri and Red Bull (especially them) to gain further advantages on the aerodynamic side.

[Owen.C93]

By regulation, you cannot change the mounting position of PU, right?
I tried to match only the two bolt positions.

Yeah the Y-Z mounting positions are fixed. So have they offset the height of the 2 cams as well?

[etusch]

Sorry guys, I missed that page. Here are my notes after watching this video. I hope this time you will find something interesting:

1. The elements that limited Honda were cylinders and the lack of resistance to the forces acting on them - temperature and friction.

2. The experience of Honda Motor engineers was used, who developed their own technology of strengthening the cylinder surface by creating or applying an appropriate coating. For the new power unit, they developed a recipe that made the cylinders five to ten times more resistant than that used in Honda motorcycles.
According to the information provided in the video, they checked the strength of the new cylinder shell in Abu Dhabi 2020, allowing the use of full power. The test was passed, so it was possible to think about solutions to improve performance.

3. Honda has been analyzing the old unit for months and has been looking for areas to improve performance. Japanese specialists quickly concluded that a complete reconstruction was necessary. Having, at least theoretically, certain that the new coating would protect the cylinder from excessive wear, they reached for a new shape of the combustion chamber allowing for a greater degree of compression. This has been achieved by reducing the angle at which the valves are positioned. This operation resulted in the camshafts getting closer to each other. This, in turn, allowed for a more compact design.

4. The increase in unit efficiency, however, had a side effect - the amount of "lost" energy that went to the exhaust system and then powered the turbine decreased. Here again the HondaJet specialists came to the rescue. A redesign of the blade shape allowed the MGU-H system to perform efficiently despite the lower exhaust energy.

5. More attention in this video has been given to Toro Rosso/AlphaTauri than to Red Bull.

--- Last two are from f1.com ---

6. The use of new materials for the construction of the engine block allowed to reduce the distance between the cylinders (bore pitch). This was another area that allowed the engine size to be significantly reduced and the center of mass to be lowered.

7. Lowering the center of mass and the size of the unit allowed Alpha Tauri and Red Bull (especially them) to gain further advantages on the aerodynamic side.

Thank you very much man.
By the way, that win in Abu Dhabi was not just Merso's engine power dicrease as some guys said who are locked their head into "mercedes is unbeatable and will stay so" dungeon.
.

[etusch]

New engine head cover (more compact, smaller & lighter) - different camshaft position:


https://pbs.twimg.com/media/EyOpL-jXIAA ... name=large

At this 3rd picture, it is more obvious that they are talking about really big improvement of compactness of İCE. Wonderfull. Thank you @f1motta.

[scheffers]

New engine head cover (more compact, smaller & lighter) - different camshaft position:

https://pbs.twimg.com/media/EyOpL9SW8AM ... name=large

https://pbs.twimg.com/media/EyOpL9iWUAY ... name=large

https://pbs.twimg.com/media/EyOpL-jXIAA ... name=large

https://pbs.twimg.com/media/EyOpL_SWEAI ... name=large

as a engineer/CNC-machinst

[henry]

The previous lap times, tLastLap, are very long and the State of Charge, SOC, very high (99%) so maybe this is a warm up or installation lap.

What do you make of the SOC bar graph? Units are SOC and has some delimiters at what looks like 0, 20, 95 and 100. Both sides show the SOC as >99% but the bar itself is around 90%. I thought about SOC of battery vs SOC range allowed by the rules but then the highlighted part of the chart wouldn't go to 0 unless its a limitation of their software.

On reflection I think the numbers are snapshots of lap number 2. So possibly the SOC at the end of the lap. The bar graph may well be real time data. It doesn’t look like they are using much SOC so I doubt this is a performance lap.

Thinking about the data I would expect most of the numbers to be snapshots at some regular the time intervals, many of the numbers would be varying too quickly otherwise. The graphs show the trends and the numbers a snapshot to check specifics. But that’s only a guess.

[MtthsMlw]

Could very well be from pre season testing 2020 as there was no running at 13:35 at last year's Spanish GP.
If this is local time.

[Tommy Cookers]

.... a greater degree of compression.... achieved by reducing the angle at which the valves are positioned.....

though of course reducing the VIA reduces the space available for the valves ie reduces the valve sizes