2026 Hybrid Powerunits

[diffuser]

A lot of extra friction and inertia for how much benefit?

Also, the crankshaft is a 3 pin, 120° crankshaft by the rules. How well does that work with running a 4 cylinder?


4 cylinder running a 4/6 of maximum fuel flow = 2,100MJ/h, which is 6,802rpm per fuel flow regulations.
4 cylinders running at 550MJ/h = 2,200MJ/h, which is 7,155rpm per fuel flow regulations.

Yeah turning 2 cylinders completely off and carrying the dead weight of those cylinders doesn't make sense to me. I could forsee a scenario where decreasing feul pressure in 2 or 3 cylinders loses less HP than using that xtra pressure in the remaining cylinders gains.

[chipengineer]

Electric CVTs are more reliable than any other transmission type.
They are being adopted in the US and Japan. Almost all Toyotas use them.

Yes but they can only be used with hybrids.

A battery is not required for an eCVT to work. It just needs to send power from one MG to another MG to perform the transmission function.
The battery just allows regen braking and more power for acceleration.

[diffuser]

Electric CVTs are more reliable than any other transmission type.
They are being adopted in the US and Japan. Almost all Toyotas use them.

Yes but they can only be used with hybrids.

A battery is not required for an eCVT to work. It just needs to send power from one MG to another MG to perform the transmission function.
The battery just allows regen braking and more power for acceleration.

It definitely would be a better Idea for future regs than a V8. It would be illegal in the current rrgs. You need 1 MGU-K connected to the Sun Gear and another connected Ring Gear. So it would be heavier? Also is it patent protected by Toyota? I seem to remember thr original patent from 1997 expired but there a ton of micro patents.

[gruntguru]

haven't 20000000 or so been made ? (Toyota, emulators under licence of T's patents, and others)

Not really a CVT though, is it.

[FW17]

Absolutely unnecessary!!!

They should have lived with 6MJ limit of recharge and 150kw deployment 160kw boost and returned to pure racing of 750hp

With that they should have concentrated on reducing weight.

[Tommy Cookers]

haven't 20000000 or so been made ? (Toyota, emulators under licence of T's patents, and others)

Not really a CVT though, is it.

how is it not a CVT ?
if (as chipengineer has said) it can adjust the gear according to energy moving only from one MG to the other

it has 'geared neutral'
(the belt CVT hasn't)

ok the (DAF-style not Volvo-style) belt CVT was its own differential, though

[ENGINE TUNER]

https://encrypted-tbn0.gstatic.com/imag ... UM-cA&s=10

Absolutely unnecessary!!!

They should have lived with 6MJ limit of recharge and 150kw deployment 160kw boost and returned to pure racing of 750hp

With that they should have concentrated on reducing weight.

The PU is not what are making the current cars heavy, the tire/wheels and the safety equipment/requirements are what are making the current cars have a higher mass.

[diffuser]

https://encrypted-tbn0.gstatic.com/imag ... UM-cA&s=10

Absolutely unnecessary!!!

They should have lived with 6MJ limit of recharge and 150kw deployment 160kw boost and returned to pure racing of 750hp

With that they should have concentrated on reducing weight.

The PU is not what are making the current cars heavy, the tire/wheels and the safety equipment/requirements are what are making the current cars have a higher mass.

Minimum weight for a Energy Pack in 2025 was 31.0 kgs. In 2026 the same minimum is 35kg. Far from earth shattering.

[gruntguru]

haven't 20000000 or so been made ? (Toyota, emulators under licence of T's patents, and others)

Not really a CVT though, is it.

how is it not a CVT ?

The Toyota hybrid transmission is simply a gearbox with three input/output shafts - ie it is a differential or "power splitting" device. The torque ratio between any two shafts is fixed, therefore it is not a CVT.

The angular velocity relationship between any two shafts can vary but only to the extent that the angular velocity of the third shaft is varied. The angular velocity relationship of the three shafts does not vary in operation.

[FW17]

https://encrypted-tbn0.gstatic.com/imag ... UM-cA&s=10

Absolutely unnecessary!!!

They should have lived with 6MJ limit of recharge and 150kw deployment 160kw boost and returned to pure racing of 750hp

With that they should have concentrated on reducing weight.

The PU is not what are making the current cars heavy, the tire/wheels and the safety equipment/requirements are what are making the current cars have a higher mass.

I did not say what is making the car heavy. Just pointed out the FIA to focus on reducing the car weight.

What route they take for it is for them to come up with. Be it tyre size, gear box length, turbo position, width of fuel cell, all avenues to reduce the weight

[FW17]

F1’s 2026 engines ‘a c*** way of going racing’

Speaks volumes on europen failure in software . They would be in a lot better place if they had outsourced it to professionals from America, China or India.

[diffuser]

F1’s 2026 engines ‘a c*** way of going racing’

Speaks volumes on europen failure in software . They would be in a lot better place if they had outsourced it to professionals from America, China or India.

https://www.youtube.com/watch?v=4WzwyjyFOwU

I can tell you the European software people would have been smart enough to know that video has nothing to do with 2026 Hybrid Powerunits!

[ENGINE TUNER]

https://encrypted-tbn0.gstatic.com/imag ... UM-cA&s=10

Absolutely unnecessary!!!

They should have lived with 6MJ limit of recharge and 150kw deployment 160kw boost and returned to pure racing of 750hp

With that they should have concentrated on reducing weight.

The PU is not what are making the current cars heavy, the tire/wheels and the safety equipment/requirements are what are making the current cars have a higher mass.

I did not say what is making the car heavy. Just pointed out the FIA to focus on reducing the car weight.

What route they take for it is for them to come up with. Be it tyre size, gear box length, turbo position, width of fuel cell, all avenues to reduce the weight

Your focus was on the PU, and spoke of "pure racing of 750hp". So I thought you were connecting the weight with the PU.

Gear box length has a negligible effect on total mass, as does turbo position and width of fuel cell. The heavier wheels and tires increase the mass of the brake rotors necessary to stop them, and the hubs and suspension needed to hold them to the chassis. The mass of the front wheel/tire combo increased so dramatically that the FIA had to double the front wheel thether in hoping to keep it connected to the car in collisions. The bigger, heavier wheel tire combo increased the mass of the cars more than the mass of 35kg battery pack which has helped lower the mass of the fuel load down to 70kg per race.