Ferrari Power Unit Hardware & Software

[DutchPanther]

HCCI combustion for Ferrari?

[Dr. Acula]

HCCI combustion for Ferrari?

Would violate the rules. The rules state that the combustion must be initiated with a spark from a sparkplug.

[johnny comelately]

HCCI combustion for Ferrari?

Would violate the rules. The rules state that the combustion must be initiated with a spark from a sparkplug.

spark-assisted compression ignition (SACI)

[Sevach]

Reportedly Charles will get the "improved reliability" ICE in Austin.

[AR3-GP]

HCCI combustion for Ferrari?

Would violate the rules. The rules state that the combustion must be initiated with a spark from a sparkplug.

This would mean that knock is illegal. Anyone can trigger a "spark" coincidentally. It's impossible for the FIA to police.


Perhaps the HCCI was involved in the prodigal 2019 PU and for this reason, Ferrari did not want the technical details of the matter in the public. It would explain the concept change for 2020 that saw them fall backwards. Maybe the agreement with the FIA was that they had to revert to spark ignition for 2020 and since they were a year behind the others on that concept, the 2020 PU was poor relatively.

[Dr. Acula]

HCCI combustion for Ferrari?

Would violate the rules. The rules state that the combustion must be initiated with a spark from a sparkplug.

This would mean that knock is illegal. Anyone can trigger a "spark" coincidentally. It's impossible for the FIA to police.

Well the problem of unintentional knock generally solves itself rather quickly...
The rule of course means the regular intentional combustion must be triggered by a spark and it's far from impossible to police. They have knock sensors, which show you when actually combustion happens and they log the ignition timing. That's all you need.

[Zynerji]

Would violate the rules. The rules state that the combustion must be initiated with a spark from a sparkplug.

This would mean that knock is illegal. Anyone can trigger a "spark" coincidentally. It's impossible for the FIA to police.

Well the problem of unintentional knock generally solves itself rather quickly...
The rule of course means the regular intentional combustion must be triggered by a spark and it's far from impossible to police. They have knock sensors, which show you when actually combustion happens and they log the ignition timing. That's all you need.

Knock happens post spark.

[AR3-GP]

This would mean that knock is illegal. Anyone can trigger a "spark" coincidentally. It's impossible for the FIA to police.

Well the problem of unintentional knock generally solves itself rather quickly...
The rule of course means the regular intentional combustion must be triggered by a spark and it's far from impossible to police. They have knock sensors, which show you when actually combustion happens and they log the ignition timing. That's all you need.

Knock happens post spark.

I don't mean to get semantical about it but I mean any form of pre-ignition (which by definition is not controlled and can occur before or after the spark).

[AR3-GP]

Well the problem of unintentional knock generally solves itself rather quickly...

fair point.

[chrisc90]

Knock happens post spark.

Not necessarily. You could have detonation prior to combustion, or combustion that happens because there is too much cylinder pressure or heat, multiple flame fronts etc.

Your spark is there to control precisely when best to ignite the fuel/air mixture in the cylinder before the piston reaches TDC in normal running mode. This is done in order to get the most power/efficiency from the engine. Igniting your mixture too early or too late can lead to knock or pre-detonation which will also result in a lack of power from a non optimised ignition timing map

[Zynerji]

Knock happens post spark.

Not necessarily. You could have detonation prior to combustion, or combustion that happens because there is too much cylinder pressure or heat, multiple flame fronts etc.

Your spark is there to control precisely when best to ignite the fuel/air mixture in the cylinder before the piston reaches TDC in normal running mode. This is done in order to get the most power/efficiency from the engine. Igniting your mixture too early or too late can lead to knock or pre-detonation which will also result in a lack of power from a non optimised ignition timing map

The way its always been explained to me is that the spark Shockwave will cause multiple ignition sites through the chamber due to high pressures, since this wave travels faster than the flamefront.

I guess if you had no cooling and then were under full load that you could have pre-ignition knock.

[AR3-GP]

Knock happens post spark.

Not necessarily. You could have detonation prior to combustion, or combustion that happens because there is too much cylinder pressure or heat, multiple flame fronts etc.

Your spark is there to control precisely when best to ignite the fuel/air mixture in the cylinder before the piston reaches TDC in normal running mode. This is done in order to get the most power/efficiency from the engine. Igniting your mixture too early or too late can lead to knock or pre-detonation which will also result in a lack of power from a non optimised ignition timing map

The way its always been explained to me is that the spark Shockwave will cause multiple ignition sites through the chamber due to high pressures, since this wave travels faster than the flamefront.

I guess if you had no cooling and then were under full load that you could have pre-ignition knock.

Apologies for the confusion. As you say, what you refer to is "knock". What I refer to is known colloquially as "pre-ignition", not "knock". The former is not "controlled" per say (unless you were attempting to replicate an HCCI under the cover of a spark ignition engine)

[F1NAC]

Reportedly Charles will get the "improved reliability" ICE in Austin.

i will trust Duchessa who said it will be same ICE as previous ones.


Nugnes is big NO

[johnny comelately]

Anyone care to explain how this compressor works.
And if you jump in and say the ChronoTV stuff is nonsense that is ok, just sketch or explain how the real thing works because in the associated photos that end plate does exist
https://www.youtube.com/watch?v=XUXiiB7LgHE

[AR3-GP]

Anyone care to explain how this compressor works.
And if you jump in and say the ChronoTV stuff is nonsense that is ok, just sketch or explain how the real thing works because in the associated photos that end plate does exist
https://www.youtube.com/watch?v=XUXiiB7LgHE
https://images-wixmp-ed30a86b8c4ca88777 ... vVHsiwMVlc

You will need to translate:
https://it.motorsport.com/f1/news/f1-fe ... /10397048/


Italian motosport (Nugnes) claims that end plate is an intercooler, not a compressor.