New 911 Fixes Turbo’s Biggest Problem

Рет қаралды 29,226

Күн бұрын

Пікірлер: 75

@Conservator. 6 ай бұрын

A mechanically disconnected but electrically connected turbo is very interesting! It could harvest all energy from the exhaust gasses. No more need to off-gas via a waste gate. It would also completely eliminate turbo lag. Exiting!

@evguenict 6 ай бұрын

Kinetic to electric and then electric to kinetic does not seem good for efficiency purposes. I read studies on e-turbos, and the problem with harvesting energy from the turbine is that it is very efficient only with a high flow of exhaust gases. That’s why you can find it in F1 cars with 850hp, or in trucks. It’s too expensive for everyday use, so combining it with less efficient systems due to the double conversion is questionable. I have a lot of doubts. But testing is the key for the future

@Conservator. 6 ай бұрын

@@evguenict You are right, thanks for pointing that out. Minor detail: on F1 engines, the MGU-H is placed on the shaft of the turbo. Teams are free to place it in the middle (which was a brilliant idea of Mercedes at the time) or on the outside. I think Ferrari is the only team with such a configuration now.

@CerberusTenshi 6 ай бұрын

@@evguenict While it may not be as efficient in terms of raw boomt, the detached system is likely to be more efficient in terms of boost delivery. Even at idle, the turbine spins, charging the little battery and that power can be used any time it's required. It's pretty much a power on demand system.

@evguenict 6 ай бұрын

@@CerberusTenshi An engine at idle is in a balanced state, consuming just enough fuel to keep itself running while compensating for friction. Harvesting power from the turbine restricts the engine. Thus, adding resistance to the turbine causes the engine to consume more fuel to maintain its idle state. In terms of energy, I agree that theoretically, you get more out of it, making it strictly more efficient, but at the cost of higher fuel consumption. Don’t forget that generators are most efficient at a specific speed. Sudies I read suggest e-turbo performs well at either low or high speeds. If you aim for both, the complexity will be extremely high, not to mention the inefficiency of double conversion.

@rjung_ch 6 ай бұрын

Correction, not it "would" but it "does", else, totally agree!

@AngrySeal8232 6 ай бұрын

😢😢😢😢 I miss the good old days

@RaceMechniX 6 ай бұрын

Let's clear up some info: The 919 did use a hybrid turbo, but not the same as the new 911. The 919 used a mechanical turbo plus an electric turbocompound down stream of the mechanical turbo to harvest excess energy. These are two seperate devices. The eTurbocompound is a turbine wheel coupled to a high speed generator. It can only produce energy, no boost assistance. The Porsche patent is for a "drive by wire" eTurbo where the compressor and turbine are electrically coupled by motors and power electronics instead of by a shaft in a traditional eTurbo. The major downside to this is the very high power level of each motor/inverter gorup driving the compressor and turbine. It can be 100kW+ with this size aerodynamic components. It's better to mechancially drive compressor via a shaft coming from the turbine and mount the motor to the shaft to add or substract torque as BorgWarner did for this application. BTW, eTurbo's can be 12/24/48/400/800VDC. It's only a matter of current driving potential in the power electronics and the electric motor. There are practical limits to how much current can be driven at certain voltages before it makes sense to jump to the next voltage class and cut the current. Amperage=$^3 when it comes to power electronics.

@JohnWiku 6 ай бұрын

That flat 6 does 500 horses N/A, why are they making it TWIN turbo with only 400HP????

@TWIXTIMA0 6 ай бұрын

Sounds backwards hahaha

@HRM.H 6 ай бұрын

Fuel efficiency

@freezersnout 6 ай бұрын

The 4.0L from the GT3 does 500hp N/A, I’m pretty sure this is going to be hybrid plus the 3.0L from the Carrera S/GTS which is in the 400HP range twin turbo’d. I was really hoping they’d do hybrid plus N/A as well.

@norevlimitr1602 6 ай бұрын

NA makes 500hp at one point in the RPM range. A turbo will make 400HP from 1500rpm to 7500rpm, will always be in peak power.

@Tacgibs 6 ай бұрын

@@norevlimitr1602 You clearly don't understand how torque, RPM and HP are linked.

@cunningham-press 6 ай бұрын

Those transparent cut aways are mad!

@andrewhoff4912 6 ай бұрын

Highly informative! I'm loving the content, keep it up!

@grantlauzon5237 6 ай бұрын

The patent turbo probably won't be used because there's probably parasitic losses going from exhaust pressure to rotation to electrical to rotation to intake pressure. The upside is maybe they could use a different type of exhaust turbine specifically for electrical power generation instead of spools speed.

@Seyeler 6 ай бұрын

As a 919 super fan, this is what I’ve wanted to see for years. But uh, I kinda expected it to be more impressive. Personally, I think it’s the 911 heritage in this instance. It’s already a hybrid, so why not make it mid engine and v6 or something? Doesn’t sound good blah blah blah I know but the speeeeeeed

@Robert-Cinque777 6 ай бұрын

take the ruf ctr3 and tune it

@Giuliana-w1f 6 ай бұрын

Mid engine 911? That would be the Cayman and Boxter. V6? Why?

@Robert-Cinque777 6 ай бұрын

@@Giuliana-w1f ikr? the whole point of the 911 is to be rear engined and flat 6

@ponanikhoza1934 6 ай бұрын

Some visual differentiation would have been nice. I mean the GTS is carrying some serious tech. Not even the "hybrid green" on the calipers nor in the model designation.

@maximelemelin2937 6 ай бұрын

If we put it away for the winter, is that problematic for the battery?

@car-nivores 6 ай бұрын

Sounds like something I wouldn't want to work on lol

@thomaspaaruppedersen6781 6 ай бұрын

Super excited about the new hybrid 992.2 GTS, even though it's way way out of my price range. Apparently, the off-the-line acceleration, boosted by the e-motor in the gearbox, is what makes it significantly faster. You could argue whether more energy should be harvested and a bit larger battery employed to enable slow creeping around town with the engine off. It appears Porsche has struck a decent compromise and I like that the 400V battery is positioned where it is easily serviceable and replaceable. Because that battery will experience thousands of charge cycles.

@rjung_ch 6 ай бұрын

Porsche is an engineering company through and through. This may be the best one yet, what will be the next model be like? Even better.

@rotorblade9508 6 ай бұрын

it’s not even a mild hybrid, I don’t think we can call it a hybrid.

@mika2666 6 ай бұрын

Finally the MGU-H comes to road cars 😄

@coenrhynd1815 6 ай бұрын

I love your videos

@queden1841 6 ай бұрын

Hybrids are fun, until the battery runs out and you dont have the advertised amount of power anymore

@almac9203 6 ай бұрын

That doesn't really apply here. A Porsche engineer said that it is very difficult to fully drain the battery unless you are going flat out at Nuremberg. This isn't a plug-in hybrid.

@TheMoukis 6 ай бұрын

Hasn't there been a supercharger solution to avoid turbo lag? In combination with the turbo I mean.

@OVERDRIVE.studios 6 ай бұрын

Yup, it's called twin-charging. A very small number of production and race cars have used it, because it's really complicated. Volvo used it on some road cars, and the Lancia Delta S4 had it.

@BizAutomation4U 6 ай бұрын

Sounds complicated which may be a maintenance nightmare. Maybe not likely to be exciting to drive compared to current 911s even though likely a little faster but not much (linear power bands are likely and boring). I'd rather buy used and tune the car, with the more conventional 911s.

@almac9203 6 ай бұрын

Porsche engineers are the best in the business and they know what they are doing plus they have tested this system for millions of miles. The engine does seem very complicated so you probably can forget working on it yourself.

@Rcv2a 6 ай бұрын

miss the old logo ngl

@p_mouse8676 6 ай бұрын

I don't miss the old logo, but basically the entire channel as it used to be. All the quirky and funny experiments It now feels like just yet another car review and news channel.

@Fuzzypeaches22 6 ай бұрын

@@p_mouse8676what happened to those kind of videos. Did they mention it at all?

@epo3081 6 ай бұрын

@@Fuzzypeaches22 think they were just losing money on most videos so dropped it altogether, will created his own channel called top dead center so he's still around

@p_mouse8676 6 ай бұрын

@@Fuzzypeaches22 not that I am aware of. There was quite a big gap in uploads

@fundude9938 6 ай бұрын

@@Fuzzypeaches22 they explained it all on a community post on this channel a few months ago

@aphaileeja 6 ай бұрын

They should talk to Czinger for maximum

@babyluvangie 6 ай бұрын

Very cool!

@MrDapperGent 6 ай бұрын

This should be fascinating

@bowez9 6 ай бұрын

Voltage isn't the issue Wattage is.

@ametti000 6 ай бұрын

None of the F1 car manufacturers are doing electric assisted turbo. And here comes porsche with no modern F1 experience doing it.

@mentox6592 6 ай бұрын

Very informative video

@HexenMeister4187 6 ай бұрын

just speculations.

@rainrainwebdesign 6 ай бұрын

Overdrive Mk 3 ;-)

@forktailedd3vil82 6 ай бұрын

So it's using an MGU-H setup from F1?

@migy5031 6 ай бұрын

I’m not an engineer, but it seems that exhaust gasses can be used to spin a generator that sends power to a battery, and that same battery can store energy regenerated from braking. My question is whether that “free” electrical power should spin a turbo or just directly power a motor.

@kooooons 6 ай бұрын

The same reason, why forced induction works in the first place: The power you need to compress air is lower than the power you gain from boost. It's a delicate balance, though. The engine has a limit of how much air it can take. As long as the power you can extract from the exhaust turbine is equal to the power that goes into compressing air at the limit of the engine, it doesn't make sense to directly boost the crankshaft.