2021 Engine thread

All that has to do with the power train, gearbox, clutch, fuels and lubricants, etc. Generally the mechanical side of Formula One.
Zynerji
60
Joined: Wed Jan 27, 2016 3:14 pm

Re: 2021 Engine thread

Post by Zynerji » Mon Jun 03, 2019 6:13 pm

MtthsMlw wrote:
Sun Jun 02, 2019 10:01 am
AMuS
Synthetic fuel as of 2021
The premier class of motor sports wants to gradually convert to synthetic and CO2-neutral fuel.
The only problem: At the moment, these so-called E-Fuels are not yet available in sufficient quantities to cover a complete Formula 1 season, all test drives and test bench runs. For this reason, only 20 percent of this fuel will be added to petrol in 2021. The 20 percent refer to mass. In terms of energy density, it should already be 30 percent.
The proportion of these fuels cultivated in the laboratory is to increase continuously until 2025, preferably in 10 percent increments, in order to become completely independent of fossil fuels at some point in the future.
https://www.auto-motor-und-sport.de/for ... 2-neutral/
Couldn't they just move to ethanol now to get away from fossil fuels? It has been done before, and it works.

PS: Adding these to the front wheels would accomplish my AWD fantasy.
https://orbisdriven.com/our-technology/

mzso
3
Joined: Sat Apr 05, 2014 1:52 pm

Re: 2021 Engine thread

Post by mzso » Sat Jun 08, 2019 3:44 pm

wuzak wrote:
Wed May 29, 2019 7:31 am

Why LNG? Why not hydrogen, produced from electrolysis from renewable energy, of course?
Why either? They both suck for volumetric efficiency.
Plus how would you keep LNG at -160°C on a racecar?

Zynerji
60
Joined: Wed Jan 27, 2016 3:14 pm

Re: 2021 Engine thread

Post by Zynerji » Sat Jun 08, 2019 5:41 pm

mzso wrote:
Sat Jun 08, 2019 3:44 pm
wuzak wrote:
Wed May 29, 2019 7:31 am

Why LNG? Why not hydrogen, produced from electrolysis from renewable energy, of course?
Why either? They both suck for volumetric efficiency.
Plus how would you keep LNG at -160°C on a racecar?
It would be in an insulated cannister, obviously. The inevitable rise in temp would be harnessed to maintain fuel pressure.

mzso
3
Joined: Sat Apr 05, 2014 1:52 pm

Re: 2021 Engine thread

Post by mzso » Sat Jun 08, 2019 11:28 pm

Zynerji wrote:
Sat Jun 08, 2019 5:41 pm
mzso wrote:
Sat Jun 08, 2019 3:44 pm
wuzak wrote:
Wed May 29, 2019 7:31 am

Why LNG? Why not hydrogen, produced from electrolysis from renewable energy, of course?
Why either? They both suck for volumetric efficiency.
Plus how would you keep LNG at -160°C on a racecar?
It would be in an insulated cannister, obviously. The inevitable rise in temp would be harnessed to maintain fuel pressure.
I don't think that's realistic for a tightly packed race car which produces 500 kW of heat. And what if the vacuum insulation (nothing else is really realistic) is damaged? Steam explosion?

Zynerji
60
Joined: Wed Jan 27, 2016 3:14 pm

Re: 2021 Engine thread

Post by Zynerji » Sun Jun 09, 2019 3:47 am

mzso wrote:
Sat Jun 08, 2019 11:28 pm
Zynerji wrote:
Sat Jun 08, 2019 5:41 pm
mzso wrote:
Sat Jun 08, 2019 3:44 pm


Why either? They both suck for volumetric efficiency.
Plus how would you keep LNG at -160°C on a racecar?
It would be in an insulated cannister, obviously. The inevitable rise in temp would be harnessed to maintain fuel pressure.
I don't think that's realistic for a tightly packed race car which produces 500 kW of heat. And what if the vacuum insulation (nothing else is really realistic) is damaged? Steam explosion?
What happens if the 258bar air tank explodes now? A controlled relief valve?

I honestly think that LNG pods wouldn't be terribly hard to engineer, would allow refueling in under 3 seconds, and would remove all of the weight of the fuel pumps and other anticillaries. I expect the pods would be a multi-layer, but thin walled construction of aluminum, Kevlar fabric(similar to current fuel tanks), and an aerogel insulator in between. If it's designed with a built in motor to allow a twist-to-lock motion when it's seated into the chassis, this would be ideal.

Any method to allow safe refuelling, cheaply, should be encouraged. If the equivalent LNG/Gasoline ratio allows reasonable sized canisters (3 sets per race, one on each side of the car, so 6 total), then the drivers no longer need to manage tyres, and can do qualifying laps, start to finish, in every GP.

That's my take, but I'm sure some don't agree, and that's OK with me!

Tommy Cookers
505
Joined: Fri Feb 17, 2012 3:55 pm

Re: 2021 Engine thread

Post by Tommy Cookers » Sun Jun 09, 2019 7:32 am

mzso wrote:
Sat Jun 08, 2019 11:28 pm
.... I don't think that's realistic for a tightly packed race car which produces 500 kW of heat. ...
LNG would allow running at 4 or 5 lambda
the engine wouldn't be dumping 500 kW of waste heat (that's the point of running so lean)
eg maybe it wouldn't need radiators

it would need a 2 stage compressor etc but all that's bolt-on
it would tend to become a compounded ICE not a weakly compounded ICE
BTE maybe 60%

mzso
3
Joined: Sat Apr 05, 2014 1:52 pm

Re: 2021 Engine thread

Post by mzso » Tue Jun 11, 2019 1:17 pm

Zynerji wrote:
Sun Jun 09, 2019 3:47 am
mzso wrote:
Sat Jun 08, 2019 11:28 pm
Zynerji wrote:
Sat Jun 08, 2019 5:41 pm


It would be in an insulated cannister, obviously. The inevitable rise in temp would be harnessed to maintain fuel pressure.
I don't think that's realistic for a tightly packed race car which produces 500 kW of heat. And what if the vacuum insulation (nothing else is really realistic) is damaged? Steam explosion?
What happens if the 258bar air tank explodes now? A controlled relief valve?

I honestly think that LNG pods wouldn't be terribly hard to engineer, would allow refueling in under 3 seconds, and would remove all of the weight of the fuel pumps and other anticillaries. I expect the pods would be a multi-layer, but thin walled construction of aluminum, Kevlar fabric(similar to current fuel tanks), and an aerogel insulator in between. If it's designed with a built in motor to allow a twist-to-lock motion when it's seated into the chassis, this would be ideal.

Any method to allow safe refuelling, cheaply, should be encouraged. If the equivalent LNG/Gasoline ratio allows reasonable sized canisters (3 sets per race, one on each side of the car, so 6 total), then the drivers no longer need to manage tyres, and can do qualifying laps, start to finish, in every GP.

That's my take, but I'm sure some don't agree, and that's OK with me!
  • Where do the cars have 86 kg and 185l worth of liquid oxygen on board.
  • A relief valve only helps with over-temperature, it won't help with keeping the LNG at the temperature required.
  • 3 seconds for 133% as much (185 liters in total) of cryo-cooled LNG? How on earth?
    Even with three stops that's thrice 61 liters and thirty kilos + the significant weight of the cannister ( with the overhead required by the swappability it would seriously increase the weight of the cars as well.)
    If you propose something at least look up some facts.
  • Swapping canisters would be much slower. They need to open up the cover of the car, detach the nozzle, dismount the cannister. Two people need to remove the bulky canister, then put in the much heavier replacement. Secure it, attach the nozzle. Replace the cover.
  • Tire management is more easily solved by more durable tires. Plus what multiple pit-stops accomplish is plummetting on-track overtakes. (And there's no such thing a qualifying laps from start to finish, there never was. Tire management is always a factor.)

mzso
3
Joined: Sat Apr 05, 2014 1:52 pm

Re: 2021 Engine thread

Post by mzso » Tue Jun 11, 2019 1:26 pm

Tommy Cookers wrote:
Sun Jun 09, 2019 7:32 am
mzso wrote:
Sat Jun 08, 2019 11:28 pm
.... I don't think that's realistic for a tightly packed race car which produces 500 kW of heat. ...
LNG would allow running at 4 or 5 lambda
the engine wouldn't be dumping 500 kW of waste heat (that's the point of running so lean)
eg maybe it wouldn't need radiators

it would need a 2 stage compressor etc but all that's bolt-on
it would tend to become a compounded ICE not a weakly compounded ICE
BTE maybe 60%
How so? The current PUs are already at 50% efficiency going to 60% doesn't change much.

Tommy Cookers
505
Joined: Fri Feb 17, 2012 3:55 pm

Re: 2021 Engine thread

Post by Tommy Cookers » Tue Jun 11, 2019 5:09 pm

running prechambers on LNG (or hydrogen) would allow higher lambda (and power) using gasoline-fuelled main chambers