Electric Superchargers - How Audi Is Eliminating Turbo Lag
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- Опубликовано: 10 мар 2018
- How Do Electric Superchargers Work?
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The Audi SQ7 is powered by a 4.0L sequential turbo diesel V8. It's good for about 435 horsepower and 660 lb-ft of torque, which is great, but the fun doesn't stop there. In order to eliminate unresponsive nature of turbocharged engines, Audi has fitted the car with an electric supercharger, the first in a production vehicle.
This means adding an onboard 48V system that can handle the additional power requirements of the electric powered compressor (EPC), which at full throttle can produce 7 kW of power, enough to spin the compressor wheel up to 70,000 RPM in just a quarter of a second. Full details of how this system works in the video, as well as animations.
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0:13 when my boss prints an email, then brings it down to me in person and tells me what to reply back, instead of replying himself directly.
lol
I just woke up and still tired, I think my body knows how important EE is for the mind
Haha daylight savings has me up too early as well. I should have delayed an hour!
One DOES NOT want to BUY a car with that. One wants to LEASE. Because when the warranty is up, repairing something like that has got to cost a small fortune...And I wouldn't be surprised if a lot of that stuff was so buried under other things, it'll take a day just to get to what failed.
those who buy them probably have a few fortunes.
Yep, it's called "Service Position".
@@hugeturd42 Yeah rich ignorants we call it !
Lease isn’t magic, you’d be better off buying the car, driving it under warranty and then selling it. It’s not chairty.
no doubt this is amazing technology, but yeah totally agree with you. hopefully it's not sitting in the dealer garage for any of the lease time
Supercharging the turbocharger to eliminate turbo lag. Yep, that's the German engineering. :D
stack another turbo charger on top and job done
And adding a battery to boot!
Germany is famous for its porn (engineering porn too)
TSI was doing that job
Leonaяdo DiCapяio dungeon porn too
Cooling fan from my Dell PC tower, got it Jason.
LOL The Delta fans from Dell PCs are way louder.
Naah.... seriously, its gaining popularity....
Haha
I have a love hate relationship with EE videos. Love them because they’re so interesting and Jason is great at presentation and explanation. Hate them because they make me wish I’d pursued engineering and done something I’m interested in rather than real estate where I spend my days in an excel nightmare😏
D’aww, well, glad you enjoy the videos! Plenty of engineers spend their days in a cube behind a screen, if it makes ya feel any better. :)
Haha thanks man. A jobs a job I can't complain really. Anyway my math is only good enough for finance. Keep the videos coming so I can live vicariously!
Jon ha.. in other instances.. doing what you're interested in on a daily basis take the fun out of it. Your job's okay, look at it as a potato crisp.. your interests.. salt and pepper. have fun
Doing real-estate, at least u can potentially afford the latest technologies covered in these videos. The engineers only get to make them, not buy them ;)... Unless you're one of those engineers that shovels ads in front of people's faces :p
Douglas Jardine ha not on my paygrade. Not unless EE does a video on an old 3 series with a squeaky clutch 😉
So two turbo chargers + super charger + generator +++
What could possibly go wrong?
Each
Everything & it will be very expensive !
Thats why its not for everybody.
Engineers don't have to repair all that crap when it goes wrong , so they just keep stacking it on.
A mechanic sees things differently.
Exactly my thoughts. Even the extra valves to open and close air supply from intercooler etc, plus the variable valve system for exhaust output to second turbo... there is so much to go wrong but dam its clever! Brilliant engineering 👏
Thanks Jason, it's great having these complex systems explained in an easy to understand manner.
What could go wrong? The perfect car for Tavarish in a few years.
"so I think I found the worlds cheapest Audi SQ7 and guess what...I bought It. That's right. It has some minor scratches from the accident...Been on fire...That will be a great project car!" I love Tavarish too haha
jospi2 Bwwaaahaha! Indeed!
Surely it'll become a hooftie first? The car wizard will tell him what it's going to cost, then off to Freddie on a transporter! He might even have the Gallardo hood working by then...
The engineering is very impressive, cutting edge and detailed but the complexity of the complete system is a major component failure waiting to happen, especially as the vehicle ages. Great vid as usual. 👍👍
Agreed. When the warranty is up it's time to sell that POS. Over-complexity to accomplish a simple task.
German Engineering™
i think volvo's powerpulse system is simpler...
Andrew Hallett-Patterson facts
Yeah, F1 uses a very similar system and the supercharger motor (aka MGU-H) is one of the hardest parts to design for high reliability. While, yes, it runs at about half the RPM the MGU-H does, they also don't expect it to run for a 100k miles.
Don't stop doing what you are doing man. Awesome work. Thank you man.
Jason- you never fail to find interesting topics. Thanks
I like this guy he explains things so well
Yes but never reply to question or concerns 😒
@@jaymills85 How would he? He can't just go through the comment section and answer all questions. He's got too many viewers for that. His comment section is likely filled with thousands if not millions of comments, so if he were to try and answer everyone, he'd have no time for videos in the first place.
I am subscribed two way more popular channels and they actually respond and make time for most fans, this guy don't even try.
@@jaymills85 How do they do it?
@@marceloguia6107 an exhaust valve per turbo? That would mean an extra exhaust port. That would mean split timing. That would mean this guy is just another wannabe know it all???
Another well put together video as always. Never bores me watching your content mate.
Always fascinates me how the technology in engines is evolving.
How audi is eliminating your wallet
Lol
after varanty period if something goes wrong , every good mourning at AUDI dilership is 1000$ and after that you can explain to the doctors what kind of problems you have. And after that thay will talk about therapy , which will cost a lottttttttttttttttttttttttttttttttttttttt
All respect to AUDI , but I do have Lexus IS250 AWD . For almost decade and about 250000 km , just change oil , filters, tires and brakes and run, run , run . Press START buton , wait a few seconds for central computer to check everithing , than comp say
"completed" , and RUN . Did not spend 1 $ for mechanics or repair , beside regular maintance .
All Germans have to many sensors and staff from China, Malesia, Vietnam and else . Thank you ,
My Lexus is 100% ( every part Made In Japan ) . No more words .
@@nenadratic6319
Audi is for only 40000km
LEXUS is with you forever
I have 3 variants of Lexus 1997 LS 400
RX300 2005
IS200 2003
Richard i got a really good laugh after reading your comment.
I’ve got Audi A4 B6 2001 just pass 300 thousand kilometers I changed the clutch at 267 thousand kilometers, still kicking ass man.
I did a vocational qualification plus a German master certification in car mechanics many years ago. These videos are better than anything my teachers provided. 😅
Will be a mechanic nightmare lol 😂..
Why? A generator, a small lithium battery and a small electric motor.. that`s manageable
Kommentator trouble shooting may not that easy.. All connected electronically
So what? Grab a multimeter and go ahead. It`s really not that difficult :D
Lets remember if you have an SQ7 your not taking it to your downtown mechanic. Your taking it to the Audi dealer like you should😁
Randy Hartono - Naturally. They’re already an owner’s nightmare. Even service technicians are at a loss to figure it out when things go wrong anymore... Look at new cars as delicate bits of conceptual sculpture while continuing to drive an old reliable car and you’ll live a happier life.
You have taught me alot.. continue with the amazing content.
Thank you for your very good presentation! I learned lot of things
Very well explained thank you!
I guess if you buy a high powered luxury SUV you're probably not the sort to worry about repairs.
Exactly the truth, I think a lot of the comments miss this point. People lease and exchange expensive vehicles every few years. Reliability doesn't always matter, depending on who the consumer is (and that doesn't mean it can't be reliable, either. Just depends on how long the engineers want it to last).
Yeah there is a reason these cars are worthless once out of warranty. But there are some good cars to be had for a careful buyer. But with increasing complexity like this, those days are coming to an end.
Luxury car brands are over 60% leased. Those buyers tend to want a new car every 3 years and know that a dealer will take care of any issues with it during that time. Business wise it's probably a better model to lease and rotate people through new cars more frequently than if they bought.
This system is just ridiculously complicated and has many failure points. It's hard to know why they just didn't put a supercharger on it in the first place. Turbos use a lot of fuel when they are being utilized. There is probably some advantages for fuel consumption doing it this way, but the cost and complexity is probably not even worth it. It's not like those 7kW are free.
Note to self:
Don't buy an Audi
145 Amps ! That's a f**king lot !
Right!? That's more than ten times what you need to run a circular saw!
That's what runs through my racing drone on full throttle, but only at 16 volts. And in case you wonder: batteries last 2,5 minutes haha
More current, less voltage, about the same power. It's pretty similar to the amount of power to run a circular saw. My circular saw is 15 amps, runs on 120V, which is 1800 watts. 145 amps at 12 volts is 1740 watts.
may as well get an electric car at that point, instant torque :D
T L S its 145A at 48V not 12v. Its 7kW
Your videos are awesome they teach me so well that I can now explain this things to others person you are truly doing a great work I respect you so much keep making these type of video you are my teacher
Amazing Jason! Keep it up!
Eletronik
_Eletronic_
Rotor
_Rotor_
*KÜHLWASSERMANTEL*
_Water cooling jacket_
Man, i love german
Shockwave Shockwave actually....it might look disturbing, but in german we put words together. When you put the three words (water cooling jacket) into one, it is exactly the same as in german 👍
yep. its kühl wasser mantel
cooling water jacket
:D
I think its funny that americans say "Kindergarten"
thats 100% german and means
kids-garden
😅
You need somewhere for your kids to grow ;)
KRANKENHAUS!!!
SCHMETTERLING!!
das war EIN BEFEHL!
Wow I love this channel
Thanks!
Thanks so much the car guy I enjoy every of your lesson
gotta love audio and the VW group they do amazing things
Your videos are pretty impressive. How do you get all this information? Like the graphics for the Audi engine.
My car needs 1.21 gigawatts, for the flux-capacitor!
Yes, but will it reach 88mph?
As long as it has a 48V electrical system
Hold my reactor
I just watched Back to the Future for the first time in 30 years. Still a good movie!
what time are you from?
Awesome videos and great explanation.
this idea of electricly powered turbocharger orelectric powered compressor came to my mind 4 years ago,this idea is excellent, instead of using exhaust gaz to run up the exhaust turbine and so on because it will have bad effect on the lubrification oil if the turbo uses the engine oil as a lubricant on the shaft in between the exhaust turbine and the intake turbine.
good work
Good content buddy. Only thing was when you were speaking about the cars 12v system. The 'battery' is only really doing anything when the car is off or starting the engine. It's not running your climate controls or radio or anything else once you're getting on down the road. That all falls on the alternator. Anyways great video :-)
In today's lesson we look at how to compound 3 stages of inefficiency.
Spot-on. ;)
I had an old BSA to which I fitted a big airscoop with a long thin tube to the carb. I stuck an electric fan in for slow speed power. Heath Robinson did not a lot of anything but in 1967 I was ahead of the game. About the only time.
Great uploaded, Thanks for sharing.
Complexity is the enemy of reliability. This is easily one of the most complex systems I have ever seen since the Bugatti W16. Can't wait to see these break down and the repair bills that follow. I'll stick to my EV.
audi already has a 48V battery in most of their cars. it's just better and more reliable than a 12V alone. so the only thing they added here is one motor-compressor. quite simple solution for the age old problem of turbo lag.
yeah..you get error code by changing the wheel size these days which is absolutely bonkers..
Was thinking almost the same thing - WAY,WAY too many things can go wrong with such a sophisticated system- I'll never think of buying one.
Another don't own out of warranty product brought to you by the fine folks at Ingolstadt.
I chuckled. Well put!
Israr Kabir Why not? Given that the electric supercharger has no exhaust heat to handle and the fact that electric engines are very reliable i think it will outlast every conventional turbo. Also its about 1000$ to replace (quick search on ebay) which isn’t to bad.
great video and very well explained
wow you explained this very well. thank you
Did I see a Valeo brand stamp on that?
Yes, this supercharger is manufactured by Valeo in Poland.
Damn man, I'd rather just live with the lag... 😂
press the pedal a bit sooner !
@@leinie6683 or just don't lift off 🤣
I liked this video explanation. This is a 4 litre biturbo V8 with an additional electrically driven compressor. All good. I have the twin turbo 3 litre diesel which probably suffers less form turbo lag than the V8 as there is less inertia. The first (smaller) turbo has variable vanes and feeds the engine initially and then approaching mid range simultaneously feeds the second larger turbo. Both turbos operate through the mid range and in the upper range the secondary larger turbo is the main provider of compressed air. Audi produced a very descriptive document on the various rev phases for this motor. If it did have a turbo lag, I resolved it by reprofiling the ECU through Superchips and that not only increased the torque and power (600 to 750 and 235 kw to 280kw) but the throttle response is almost instant AND it is more fuel efficient. That motor is now dropped (emissions?) and the new 3 litre diesel is now a single turbo with an electric compressor. It is also 'mild'hybrid. I suspect unless the single turbo is super responsive that there will remain measurable turbo lag. Also I suspect the torque curve (although a max of 700 now)is not very flat and that high figure will be a short duration. Your thoughts..?
This is what I've been talking about for years!!
Umm you wouldn't want to own an SQ7 out of warranty.
Unless you're rich
@@dirkturrell6460 You wouldn't be rich making decisions like this !
Why would they add the weight and complexity of adding a 48v battery and not just go the rest of the way and make it a hybrid?
German engineering, if it isn't broken, it isn't complex enough...
Thetablet Nonya is a small battery really
dont forget the 7 KW electric motor lol, thats like 40 kilos
nick brookhuis no, there are 7 KW High RPM motors that weigh less than 1 kg, some even 600 grams
a 48v lipo battery weighs about 2lbs, It's really not much.
@@RC_Trailblazers they could put high big capacitors, and so it can have 7kw for eturbo, and eliminate that 48v battery.
Was wondering about t these glad you had a video linked before watching because I know its supercharged
Great video explaining the detail! If you buy this car make sure you return it at the end of your lease before the warranty runs out... I would never want to pay for repairs even though the car is I’m sure, amazing to drive!
But turbo lag is like foreplay.
No. turbo lag is not a good thing, unlike foreplay.
@@mrpmj00 Turbo lag is more like erectile dysfunction.
Not at Le Mans it’s not
Mild hybrids also use a 48V battery. It would be great to explain how that works too.
this is crazy its soo cool how far a engine has come and variable compression like what think how much has changed in 50 years variable compression so coool dnag wow this is great
When this thing is 12 years old, it will embody someone’s nightmare. Awesome video 👏
Yay Audi breaking barriers again!
MotorHead Tech yes but only till the warranty is up.
Yes, i imagine wallet barriers will definitely be broken
I think the complexity of modern combustion engines is getting ridiculous. Just put a 250 kW electric motor on the rear wheels, mount a 90 kWh battery low in the car and make it as aerodynamic as possible. You'll have no turbolag, a lot of power and torque and also quite good range.
I think electric are overrated. Hydrogen is a good way to go. Check the Toyota Mirai.
@@attiliojorge2765 I don't think hydrogen powered cars have a big future. They are even more expensive than battery-electric cars, still need a battery, are very inefficient and need a completely new network of hydrogen pumps that nobody wants to finance and build.
Fabian Künzle it is all about pros and cons. Maybe something else will be the best but electric don’t have enough range. Hydrogen takes less then 10 min to fill the tank. So it will be better on that aspect. About price. The mirai is on the 40k but it’s more like a big sedan so definitely the can do cheaper ones.
@@attiliojorge2765 Yes of course but I think a range of 400-500km is enough. Just the charging has to get faster. When I looked at the mirai yesterday, it was about 90k here in Switzerland. Do you really get it for 40?
@@attiliojorge2765 Toyota ist selling the Mirai way under the production costs...;-).
well explained, thank you.
there is some research and development going on to replace 48V turbo battery with a super capacitor bank. even going to 60V. lots of great stuff going on, thank you for the video. showing newer ways to boot turbo power. a computer switches it off and on as needed.
Electric motors: instant torque/instant boost. Can't beat it. Audi A7 uses the 48v battery for its mild hybrid system (torque), and the Q7 TDI uses it for supercharging (boost). No matter how you see it, electrification is the best for efficiency and performance.
Definition of overengineer
: to engineer (something, such as a product) to have more functions, capabilities, etc. than are necessary or desirable
Great stuff.
awesome video man, an old concept, thats finaly in a car today :)
Engines today are so complicated, I miss the days of simplicity, when back in the day you could actually work on your own engine now it's pretty much computers and gadgets.
Pedro pepe: I do
There has to be a way to get these efficiency gains without over complicating things as it's driving up the cost.
@@Patchuchan yeah, going electric. ICE is a very inefficient design by nature.
This guy gets it.
Get a Russian car then.
Next video: How Tesla is eliminating turbo lag.
to improve something, you have to use it, not throw it away
Next video: How Tesla is eliminating transmission wear.
If your wondering Teslas have so much power bc motors dont have to build up like engines do , they have instant torque like diesels
@@samurboi8007 Diesels don't have max torque at low RPMs
@@thomas_nl_ i never said that they have max torque , i said they have alot of torque at full throttle
In my 87' Camaro I'm driving a Paxton Novi 2000 with a ME 0913 @ 72vdc (6x12v) and getting 5psi with a 350 smblk. It CAN be done, but as you said, it takes a lot more power than most people realize. Of course I get my 5psi without taking a thing off the engine, but then it's all gone by red-line. I like it better than NO2. though and it still keeps the 2.0L turbo crowd from dissing me.
Been waiting for this ...
good video. My gut feeling is that this tech will be a flash in the pan. It adds a lot of weight and complexity for a generally minor benefit. If I were running Audi, I would simply offer a traditional turbo charged model for customers who want the most power and an alternative supercharged model for those who prefer to avoid lag. Or maybe explore using a similar switching/capacity concept with a mechanically driven supercharger. The more I try to wrap my head around the idea of electric supercharging the more I see it as flawed.
The added weight is of one electric motor, a little piping and an air valve. The dual turbo setup is an otherwise sensible approach on a turbodisel anyway and the 48V battery system is already installed for other purposes.
I agree, the weight of the battery (which was not put there for "other purposes", the video even states the battery & separate generator was put there specifically to power the 7kw electric motor because an alternator and 12 volt battery (which it also has) couldn't produce the required power) and a special generator, the step-down electronics - so much extra weight up front (and Audi's already have enough front weight problems as it is) and so many added points of failure - this is marketing engineering, and it's just going to hasten the already horrific built in obsolescence that Audi products all have, with efficiency gains so marginal as to be basically pointless. The fact is a modern turbocharge design can be set up to be so low-lag, and so efficient at mid-range power delivery that the average driver isn't even going to think about it.
It's an Audi. People don't buy them for their longevity, reliability or efficiency.
They mostly buy them because they're expensive and are a way of flaunting wealth.
The whizzbang stuff is neat from an engineering point of view but for the most part this kind of stuff is rearranging deckchairs on the Titanic from the point of view of the long-term relevance of the internal combustion engine.
Tourbillon watches are another example of mechanical complexity that's been long-surpassed for accuracy by other methods, yet more and more expensive+complex versions keep showing up, primarily for "because I can" reasons.
In times gone past someone would have settled for intricate baroque decorations on their castle.
Matthew Sharpe
It could run on 12 volts the only thing is that a 12 volt 7kv super charger would take 486amps at 14.4 volts which means probably dual alternator setup with 2 runs of 0ga wire for grounds and power all that where as at 48 volts the amperage would be 145 amps which means one run of 4 gauge wire and less weight and less chance of fire if something shorts out less strain on the main electrical system
caydon schleder I've never seen a 12v belt driven alternator that can put out more than 200 amps, and at that output they are already large and heavy. I guess you are dealing with short duration load requirements as the electrics for the turbo are only working for brief periods to fill in the gaps, but I stick by my original statement, this is marketing tech for the sake of tech - as Alan Brown said - "because I can", not "because it is sensible" - Audi are really good at that now days.
volvo's compressed air storage system is much simpler and by the looks of it, weighs far less. audi must have been kicking themselves for not coming up with that idea.
Volvo`s compressed air storage system creates way too much static pressure behind the turbocharger... which really increases the risk of wear and component failure. All of those Audis with 48 volt systems already have the higher voltage for their electric swaybars and power generators, so the only thing added is 1 motor.
And a lot of comments on the Volvo video “why not use electric” haha. They both have their unique pros and cons.
Engineering Explained well... the internet isn't exactly the place that is known for its easy-to-satisfy residents.
Quertreiber(QT) and that's different from Volvo's system how?
TL DR Audi's system can provide boost for longer time.
Volvo's system is designed to reduce turbo lag just by helping turbo to spool for short time, it's just quick shot in exhaust manifold. Audi system can provide support for compressor much longer and it gives you more flexibility - you can adjust speed of electric supercharger to engine needs. Volvo's system is simple system to spool big and heavy turbo fast, in Audi's system you can rely only on electric supercharger on low revs.
Great video. I remember watching a few videos where people were trying electric turbos and concluded that they do basically nothing (at least the commercially available ones). Just not enough power. I thought though that the concept should be solid - power is power, you just need a bigger motor.
As you mentioned though, I think the practical aspect is really usually the deal breaker. Powering a 7kw motor essentially requires it's own whole system from battery, motor controllers, motor and system housing ect. It's almost like creating a mini EV for your intake :P
That said, the responsiveness of electric does make it a perfect choice and I can imagine this will improve acceleration and efficiency noticeably.
Your video's is good. This electric supercharger, is very old, private tuners, did this back in the '70's. But Audi MUST be one up ! The richer man vw, so he can brag ! The few horsepower an engine-drivi
Wow. Crazy complicated. Part of me thinks that the complexity and maintenance costs for advanced power systems like these will accelerate the adoption of simpler battery electric and hybrid powertrains.
What`s so complicated?
Adding mechanical systems to a car to fix a simple problem never ages well.
All the new engines featured in the 2018 a7 and a8 will be mild hybrids, containing a 48v battery, dc to dc converter and an electric motor attached where the starter would be.
Joe Holland turbos are not additional lol. Its a turbo diesel, what do you expect?
Agreed,
one could simply have used the electrical power to directly drive the car.
All this is only needed when you are going relatively fast at low rpm and slam the accelerator.
You stated that the battery has a responsibility to power the convenience features and accessories, and ignition in the car, but I do have to point out that it's actually the alternator powering them while the engine is running.
Yes you are right......but I think what he was saying is, when an electric turbo kicks in the overall power consumption exceeds the alternators power output!
Finely you explain nicely 👍
Love your work . Pretty complex and political in the modern day. A bit like an electric engine/motor without combustion from fossil fuels. I love a complex system, it is like a challenge or a toy to break down and rebuild. Do you remember Mekano ( Mekano does not even equate to spelling in the modern age). I'm sure you can do all of this and more without explaining it. You are a legend mate. Really really good you tube Vid. Thank you.
Love your videos.
This system from Audi is way more complicated than it needs to be. The electric supercharger part is neat and all but then there is twin turbos on there also, and the 1 turbo is only being used part of the time. Way too much going on.
BiTurbos are very common on Diesel engines
They could literally build the electric motor into the regular turbo, have the motor switch over to being a generator once the exhaust gases are sufficient to spool the turbo without the electric assistance, and avoid having a whole separate electric turbo unit, and a whole generator unit.
It’s the most complex way to go about this systematically, but probably the easiest in terms of not requiring any super high tech parts.
@@Jonathan_Doe_ You could and I know it has been done as prototypes at least, but they probably didn't have a turbocharger currently in production with built in electric drive.
Oftentimes manufacturers don't use the technologies that would be ideal and that they'd like to, they just use what is actually available. Audi doesn't make turbos they buy them, so they have to stick to what the suppliers can actually get them. Not everyone is Koenigsegg, which makes a handful of cars a year and sells them millions so they can just custom make every part that goes into them.
As far as the people saying the two stage turbocharger is to complex and unreliable (anything more complex than a carburetor is too complex and unreliable for some people), it's tech that goes back to the 80s used by various manufacturers, and more recently BMW has made tens of thousands of two stage turbo Diesels in their 35d/40d/50d powertrains and the system is very reliable.
Excellent video! Now I'm convinced even more, I should never buy any of VW/Audi
😊😊😊
Denys Zvarych When you’ve tested the Audi SQ7 Come back and tell me that again...
Yeah stay away from german engineering, it's terribly good 😏
@@web_dev-rl2ve 😂🤣 tell that to the 09-12 Audi A4.
Questchaun I drive a Passat which is the A4’s kissing cousin and it’s rock solid, no issues. I’d buy one again when I’m done with this one
Quick question. Could you make a video explaining psi in a turbo? I purchased an '18 Civic Si last August and it has a boost gauge built in that I enjoy watching. I've noticed that it ranges from -16psi to +16psi and it would be cool to understand the physics behind it.
Can't wait for they hybrids to start having this too! They already have the high voltage system in place.
I would love to have been the meeting where this approach was presented. My God, what a mess!
somone got a raise ig
I remember calculating this idea at college in the 90s years ago and it was a crap idea then.. add up the energy converted from fuel to air pressure with all the losses and its pathetic.
Qmentis he said 7 hp.
I hear you; engine mechanical converted to electrical to battery storage to electric motor converting it back to mechanical for the air compressor. Yikes! Losses must be staggering. What's wrong with a simple, small displacement mechanical supercharger with an overdrive pulley and electromagnetic clutch to uncouple it when turbo boost builds? Probably not complicated enough for Owdi.
Because its way more efficient than the mechanical supercharger and adjustable in every way you like to have it. Also such an e-charger uses way less energy than you might think, because it is only activated for short time.
josechirimoya 2006 Golf Twincharged engine is exactly that and works wonderfully well
@@tomcrockett7941 he said 7 kW, which is almost 10 hp. but because the electrical efficiency of a car is about 0.6 overall, you'd suck a lot more fuel to regain that electrical charge. this crap is only to show nice data sheets...
Epic tech. Gonna be a lot to fix, too!
This is a clever use of an electric supercharger because it gets around the biggest problem of duty cycle. The brief bursts needed to get past the turbo lag, similar to the brief high torque bursts needed to start an engine, can be supplied by this relatively small electrical supply set-up as compared to a full time electric supercharger which would require a massive alternator, conductor cables, and electric motor (with a cooling system) to deliver the horsepower required to make a steady supply of useful boost.
The two-stroke EMD 645 engines with turbocharger has some kind of "artificial pre-charge" so it can scavenge at low RPMs.
Like audi/vw needs another electrical device on their cars.
That's going to fail again and again...
Awesome 👏 . I’ve always wondered when they would move to a more powerful electrical system . 🤔😊
very clever and necessary for the high demand in power economy and emissions, from ST Autos Audi Specialist
diagram doesn't look right, the electric supercharger is drawing air in from one intercooler and then discharging back into it through the other one
When the valve is open, it is dumping SC air into it's own intake. So the SC can stay spooled with zero pressure being made.
Condition = when Turbos are sufficiently spooled to give boost, and ALSO at engine idle when SC boost is not required.
When the valve is closed, it will pressurize very quickly because the electric SC has been spooling consistently. Condition = Low RPM and not idling, Ie. When throttle > 0 and turbos have not made +ve Boost.
Either way, this air is then fed to the manifold.
So At idle, SC is spooled and valve open.
Open throttle, SC valve shuts and because it is already spooled it will create positive manifold pressure instantly, turbos are spooling up, and the SC is no longer required so the valve could be in either state, but open would be best to ensure enough air is available for the turbos to draw in.
4:16 Volt-Amps would like to know your location
Thank you.
Wow. The Supercharger is interesting but the exhaust valve routing is incredible..
So complex. Sure makes 4wd electric Tesla look good in comparison. 2 electric motors, shitload of batteries....BOOM, instant acceleration!
Even an electric supercar with 4 motors is less complex.
If only it worked on Understeer
Best turbo lag solution EVER so far.
mdea ...
superb...ar trebui sa le vanda la pachet de doua sa fi sigur ca ai cu ce pleca dimineata ...
435HP out of a 4.0L Electric-Supercharged, Turbocharged V8? Am I supposed to be impressed?
Makes the cylinder deactivating Chevrolet LT1 seem like a much more cost efficient solution.
Edit: Just realized it's diesel, so it isn't quite comparable, but it still seems overengineered. I'm willing to bet 48V crankshaft assistance motors will become more commonplace.
Thomas Griffin bmw quad turbo seams more efficient. Sure there is lag. But for 98% of the time it’s still vastly better.
its a diesel LMAO
This technology does nothing! for peak power.
its a diesel dude
These are the final days of ICE cars and they are pulling out all the stops. Going forward it will be second generation hybrids and all electric -- cars with insane torque at low speed and double or better the efficiency.
Raptorman0909 The final days of ICE will likely be relegated to some heavier trucks, ships, diesel electric locomotives, and some hybrids like the Chevrolet Volt.
yes electic cars have way more torque and much smaller "engine" compared to a current production fosil fuel based car.....
Awesome video Jason. Can you create a video comparing this with new 911 (992.2 GTS)
Your awesome. The 12 volt system is running off of the alternator, and it it generates 14.5 volts.
The real question is should I buy a z3 m coupe, escort cosworth or lancia delta next? Because I'm not buying this complex mess.
lancia
Lancia or escort. But go with a integrale hf.
buy the cosworth :)
They're all complicated.
Texas Car Nerd if you have the money money take Atlantis HF Delta integral
Real Good Power an Fun to Drive
Also ab in 4wd
What a complicated nightmare to fix if the system fails or malfunctions.
to everyone hating in the comments you should really try it out if you can . this technology is amazing
i was fortunate to test the rs5 tdi concept 3 years ago on the track and to have a short drive as a passenger in the
tt clubsport turbo with the same e turbine in a 2.5 tfsi . i have to say the near instant push is almost tesla like and then when the big turbo kicks in all hell breaks lose . its really mind boggling how fast and good it works and will change your perception of what a turbo car can be . i have yet to test the sq7 but i do think it is a step in the right direction for turbo cars just remember all new technology is expensive and complicated at first
Tremendous! Looking for a hybrid system to integrate this - imagine having a supercharger powered off the hybrid battery. And thinking about this as a compressor - could we use a more traditional air compressor with a small tank? It could spray more air into the intake manifold when instructed by ECU, possibly under hard acceleration.