F1technical.net

henry wrote: ↑

20 Oct 2018, 10:16

I think this is the reg that @godlameroso referred to:

5.1.11 An insert within a PU component is a minimal, non-dismountable part whose function is solely to locally support a function of this component. The total volume of inserts within the component cannot be more than 10% of the total volume of the component.

I’m not sure that it specifically covers a pre-chamber, but there are no other regs that restrict the combustion chamber area, other than the requirement for a spark plug.

Within the F1 regulations, only a single injector is permitted and the key to applying the principle within that limitation was shrouding only the spark plug to form the mini-chamber above the main combustion chamber and not – as in the drawing – the injector and spark plug together.

Phillyred wrote: ↑

20 Oct 2018, 20:27

Sorry if this has been asked or stated before, but is Red Bull forcing Honda to push updates on the Toro Rosso to make sure they get maximum testing in before Red Bull starts using Honda?

Bence wrote: ↑

20 Oct 2018, 14:31

Saviour stivala doubts the use of prechambers in F1 in general...

McHonda wrote: ↑

20 Oct 2018, 19:29

Mahle openly talked about using an adapted version of TJI for F1 regulations back in 2016. Mark Hughes wrote a piece about how they got around the single injector rule...

Within the F1 regulations, only a single injector is permitted and the key to applying the principle within that limitation was shrouding only the spark plug to form the mini-chamber above the main combustion chamber and not – as in the drawing – the injector and spark plug together.

https://www.motorsportmagazine.com/opin ... ine-update

godlameroso wrote: ↑

20 Oct 2018, 21:34

There's about 5 months left until winter testing, I'd imagine they'd be working flat out to get the best PU they can until then.

saviour stivala wrote: ↑

20 Oct 2018, 21:18

McHonda wrote: ↑

20 Oct 2018, 19:29

Mahle openly talked about using an adapted version of TJI for F1 regulations back in 2016. Mark Hughes wrote a piece about how they got around the single injector rule...

Within the F1 regulations, only a single injector is permitted and the key to applying the principle within that limitation was shrouding only the spark plug to form the mini-chamber above the main combustion chamber and not – as in the drawing – the injector and spark plug together.

https://www.motorsportmagazine.com/opin ... ine-update

"How they got around the single injector role" Yes you are correct. that was after his attention was drawn to the rule stipulating "direct injection" must be used, and in turn the Mahle TJI pre-combustion system came about a week after pushing out the use of HCCI combustion system. all this happened something like 2 years ago.

saviour stivala wrote: ↑

20 Oct 2018, 21:18

McHonda wrote: ↑

20 Oct 2018, 19:29

Mahle openly talked about using an adapted version of TJI for F1 regulations back in 2016. Mark Hughes wrote a piece about how they got around the single injector rule...

Within the F1 regulations, only a single injector is permitted and the key to applying the principle within that limitation was shrouding only the spark plug to form the mini-chamber above the main combustion chamber and not – as in the drawing – the injector and spark plug together.

https://www.motorsportmagazine.com/opin ... ine-update

"How they got around the single injector role" Yes you are correct. that was after his attention was drawn to the rule stipulating "direct injection" must be used, and in turn the Mahle TJI pre-combustion system came about a week after pushing out the use of HCCI combustion system. all this happened something like 2 years ago.

Dr. Acula wrote: ↑

20 Oct 2018, 16:54

henry wrote: ↑

20 Oct 2018, 10:16

I think this is the reg that @godlameroso referred to:

5.1.11 An insert within a PU component is a minimal, non-dismountable part whose function is solely to locally support a function of this component. The total volume of inserts within the component cannot be more than 10% of the total volume of the component.

I’m not sure that it specifically covers a pre-chamber, but there are no other regs that restrict the combustion chamber area, other than the requirement for a spark plug.

It could refer to the prechamber, but i don't think it does. Generally what often is refered as inserts when it comes to combustion engines are things like tungsten weights which are welded or glued into the crankshaft as counterweights. You can gain an advantage by using them in masses because basically it keeps they size of the counterweights down which improves the aerodynamic of the crankshaft.

http://www.formula1-dictionary.net/Imag ... kshaft.jpg

McHonda wrote: ↑

20 Oct 2018, 22:00

saviour stivala wrote: ↑

20 Oct 2018, 21:18

McHonda wrote: ↑

20 Oct 2018, 19:29

Mahle openly talked about using an adapted version of TJI for F1 regulations back in 2016. Mark Hughes wrote a piece about how they got around the single injector rule...




https://www.motorsportmagazine.com/opin ... ine-update

"How they got around the single injector role" Yes you are correct. that was after his attention was drawn to the rule stipulating "direct injection" must be used, and in turn the Mahle TJI pre-combustion system came about a week after pushing out the use of HCCI combustion system. all this happened something like 2 years ago.

Sorry if I've got the wrong end of the stick here but if you know Mahle said they are using an adapted form of TJI 2 years ago already then why do you doubt the use of pre-chambers in F1?

saviour stivala wrote: ↑

20 Oct 2018, 21:51

godlameroso wrote: ↑

20 Oct 2018, 21:34

There's about 5 months left until winter testing, I'd imagine they'd be working flat out to get the best PU they can until then.

Yes they for sure will, in fact i have no doubt that the other 3 manufactures will also be working flat-out to that end.