how wouldn't be a ~3% reduction in the energy content ?
(less than that if following eg the UK trading laws - they only require E10 to have over 5% ethanol)
how wouldn't be a ~3% reduction in the energy content ?
The lower limit for ethanol content on UK E10 is actually 5.5% year-round according to the recent legislation.Tommy Cookers wrote: ↑22 Dec 2021, 21:21how wouldn't be a ~3% reduction in the energy content ?
(less than that if following eg the UK trading laws - they only require E10 to have over 5% ethanol)
Maybe to do with harmonics but I don't think so for the firing order idea. As far as packaging goes maybe?Hoffman900 wrote: ↑22 Dec 2021, 02:49I would love to know more about the piston. I’ve sent that to a few people in the industry and they love the imagery of comparing it to Mt. Fuji as well as how well it was articulated. Almost poetry.
I’m assuming changing the no. 1 cylinder (front most) had to do with managing harmonic balances with the firing order change (to manage the pulse intervals) to the turbo, with the way it was all packaged.
At least that’s my guess.
I am not sure what improve means here. If the car's fuel capacity is the same, then yes, the milage will decrease. The HP of the engine will increase because of the 3.7% (E10) added oxygen level in the fuel. I believe there is also an improvement in knock control. The ethanol also has a cooling effect so cooling drag could be reduced.godlameroso wrote: ↑22 Dec 2021, 17:59... With a ~10% reduction in energy content in the fuel, if they manage to improve the power unit despite the fuel induced handicap, this is good news indeed.
afaik and all that .....hardingfv32 wrote: ↑23 Dec 2021, 20:54.... The HP of the engine will increase because of the 3.7% (E10) added oxygen level in the fuel. I believe there is also an improvement in knock control. The ethanol also has a cooling effect so cooling drag could be reduced.
Brian
well quick guesses on E10 vs But5 ....godlameroso wrote: ↑23 Dec 2021, 21:21... The point being the new power unit is actually an improvement over the 2021 unit despite the new fuel.
There is no maximum O2 content in the fuel specified, although I'm guessing they'll want to keep it at the minimum value possible ~3.5% The whole E10 thing is just a waste of resources, it's more expensive to make E10 than straight gasoline. If it weren't for government subsidies no one would bother. Oh well at least Konigsegg can exist. There's nothing sustainable or environmentally friendly about it, but lawmakers don't understand, and the populace are dumb as bricks, so nothing is going to change.Tommy Cookers wrote: ↑23 Dec 2021, 21:30well quick guesses on E10 vs But5 ....godlameroso wrote: ↑23 Dec 2021, 21:21... The point being the new power unit is actually an improvement over the 2021 unit despite the new fuel.
1 the compressor work would be less
2 greater explosion range allows leaner running ....
enabling more boost and more heat dilution (less heat taken by coolant - more heat going into work on pistons)
Forgot about the fuel flow restriction. Could not spot it when reviewing the 2022 rules. What article is it in?Tommy Cookers wrote: ↑23 Dec 2021, 21:09...but this would use about 5% more E10 ie 105 kg/hr rate...
Thank you @Hasika! Look at the development from '18 - '19!hasika wrote: ↑24 Dec 2021, 16:26https://nz2550.bvimg.com/14347/305e61319e87c504.jpg
Honda really did a fantastic job with the RA621H.
Yeah,had to say the development from 18-19 was crazy....Wouter wrote: ↑24 Dec 2021, 16:51Thank you @Hasika! Look at the development from '18 - '19!hasika wrote: ↑24 Dec 2021, 16:26https://nz2550.bvimg.com/14347/305e61319e87c504.jpg
Honda really did a fantastic job with the RA621H.
https://nz2550.bvimg.com/14347/305e61319e87c504.jpg