Bugatti's Giant V16 Engine Is Insane - All The Tourbillon Details!

[@MateRimacAuto]

Hey Jason, love your videos. You’ve done a good job here. But just one little thing you have missed here. The Nevera does NOT drop in power because of battery derating nor is it overheating. If I remember correctly, it might have reached 35 °C in that run, which is very far from the maximum temperature. The power drops because the motors are reaching their maximum speed due to the transmission ratio. As you well know, with single speed gearboxes like in Nevera, there is a trade off between acceleration and top speed. We figured that 412 km/h was plenty and did not want to compromise on acceleration. So basically, the battery could deliver 1.4 MW for a lot longer if the powertrain could take it (longer ratio). The drop in power is due to the motor power curves which drop off at the end of the RPM range and the car reaching its equilibrium speed at max RPM. As for the Tourbillon top speed - as you said… Let’s see 🤓 Would love to geek out on some other stuff you’re talking about here.

[@ItsWillLee]

Gorgeous automotive engineering, and a marvelous car too 😁 The gauges are an absolutely genius design. Congratulations on this beautiful achievement sir

[@gavcom4060]

Lol Mate casually commenting here and only getting 2 up likes

[@ItsWillLee]

@@gavcom4060 RIGHT !! Hey @EngineeringExplained, somebody would like to have a word with you! lol Would love to see/hear the "geek out" between these two fine gentleman!

[@fernandovidal7982]

would tove to see u both geeking out 🙃

[@zmurray52]

I'm sure I am not alone in loving the idea of a videochat/podcast discussion between Jason and Mate about the engineering behind these incredible cars!

[@EngineeringExplained]

**Important Note!** If you made it to the end, it's important to understand that the ~68% (or ~72%) discharge rate is absolute not a rule of thumb, just a fun guestimation. Every battery is unique, and will have its own unique characteristics. Also, looking at Rimac's latest high speed run, they achieved 412 km/h with *much* higher power after prolonged acceleration (the car was delivering 1225 kW at 412 km/h, or 87% of the peak 1408 kW). Porsche's T-Hybrid battery is also rated for "continuous" power at 41 kW, versus a peak of 48 kW - that's roughly 85%. So perhaps 70% is a low estimate, though it is accurate for the context of the original Rimac top speed run, and we don't have many of these data points (because top speed runs are a challenging thing to put together). Just some added context! Will be interesting to see some real world tests with the Tourbillon. Thanks for watching everyone!!

[@BradGryphonn]

When I take delivery of mine, pop over, and we'll take it for a spin across the Nullarbor or up the territory road. Old mate over there in Italy said I was getting number three, so it shouldn't be too far away. In the meantime, anyone interested in some dogecoin?

[@al6313]

I'm pretty sure the E-Motors at the front axels are not able to exceed max. speed. Do they have a clutch to disconnect them? At some point it's rear wheel drive only. Also the other E-Motors don't have max power at max. speed. I like your calculation but its very theoretical.

[@ChopperPBM]

Excellent work as usual

[@josemorenoporras7506]

with a good intake plenum,could the NA engine make more than 1000 HP at high speed? Maybe I´m wrong,but some motorbikes had than ram air box to make more power at top speed. What do you think?

[@typerightseesight]

did he just doobydobap in the first 30 seconds of the video.

[@desertsandfly2277]

<a href="#" class="seekto" data-time="254">4:14</a> I never even thought of this. The car is RWD in the ICE only mode. So we could potentially see some people do donuts and slides in the Bugatti Tourbillion. And with a high revving V16, it's definitely going to be banging off the redline like crazy.

[@snakeeyes9246]

It's a similar format as the new Lamborghini Revuelto. It's RWD using the V12 and two of the motors power the front wheels.

[@just.jose.youtube]

Million euros drift cars. There's a competition I'd watch. 😅

[@leonardocrncec9566]

Yep, and it's even better that way. 4wd is only for starting, on the higher speed is only draging your power down and weighing your car down.

[@blaviken7743]

Only 250 being made I don't think even 1 of them will see daylight.

[@berkk29]

We might even see that from Mate Rimac himself lol. Matt from carwow asked him about it but Mate was kind of shy doing it under the Bugatti name which is supposed to be classy. But we might still see it :)

[@rafiazmi]

Thats a nice drawing of the car you got on the board

[@EngineeringExplained]

I don't think the Tourbillon looks like a McLaren, but I feel like my drawing does and it disappoints me haha.

[@rafiazmi]

@@EngineeringExplained hahah I respect the effort tho

[@Gearbhall]

@@EngineeringExplained I disagree, the drawing is unmistakably a Bugatti. Stop letting the impostor syndrome win, you are an artist.

[@thelawfamilyproduction329]

Oh wow there was a picture of a car? I thought it was a graph. Kidding XD

[@user-aRb00d3r]

almost as good as those sybirtrukk detailed ones!!

[@Doctorbasss]

Mate said that the Tourbillon battery has Imersion cooling. Which mean it has the best cooling method technology at the moment. These new dielectric liquid are ultra performant. So holding 25C discharge rate is not a problem and sustained power is also improved even at the end of discharge SOC curve. The new cells they are using are ultra performant ultra low Internal resistance. Also One of the reason you see the power is decreasing on the Nevera is because the BEMF of the motor is getting close to the battery voltage so it become more and more difficult to continu pushing phase current to the motor( which is related to torque) as the difference of both( or the potential difference) is narrowing. The use of Field weakining generation to conteract that is not efficient so more and more heat is generated.

[@Rene-cm6go]

I Like..Although I didn't understand anything you were talking about 😂

[@XJapa1n09]

I’m with Rene 🤣

[@ralanham76]

🎶🎵It’s all about that bass 🎶🎵

[@Vatharian]

> Toshiba's superconducting motor enters the chat. Jokes aside, I wonder how much of EV power train is consumable parts here. There was no word on motor cooling, especially on back motor, which not only has to work super hard, but gets cooked by ICE (exhaust seems to be hugging it pretty tight).

[@Factoryseconds123]

Tesla is years ahead in motor tech

[@icare7151]

❤the data, presentation and explanation details; awesome as always!

[@aurorajones8481]

<a href="#" class="seekto" data-time="7">0:07</a> HELLO!!!!! GAUGES!!!! Not a screen in sight. Ive been screaming this from the rooftops. Finally its taken Bugatti to figure it out. Put real gauges back. I said automakers should pair up with great watch makers to creat a look very similar to what they pulled off. WELL DONE! Now lets discuss the power...

[@shoobadoo123]

<a href="#" class="seekto" data-time="484">8:04</a> Mate talking dirty to us 😂

[@swordmonkey6635]

In an interview about the Tourbillon, Bugatti test driver Andy Wallace said that during his record breaking run with the Chiron SS, that the car was still pulling at 304 mph and the length of the track straight kept him from being about to gas it. He had to begin slowing down to cover the sweeping corner of the track and had to guess where the deceleration zone was since nobody else had ever driven that fast at the Ehra-Lessien track before.... so even the Chiron SS was capable of more than 304 mph.

[@juancuelloespinosa]

<a href="#" class="seekto" data-time="74">1:14</a> ok, jason clearly has an assistant, because that bugatti outline looks too good

[@ericrosen6626]

For the RWD mode why not still use the 400 HP rear motor along with the 1000HP ICE?

[@EngineeringExplained]

Maybe they'll add it in the future - I think the point is it transforms it to a pure ICE car.

[@thomasroberts8024]

"Some rich guys like watches......" Having spent several decades in or around Houston and being NASA aware all the time, AND having once sold a car to an Astronaut, the watches they wore to the moon always fascinated me. As I transitioned from a job with the Volvo factory to one with a new Mercedes dealership and was being paid by both(!) I decided it was time for a nice watch. So, in 1976, I purchased the Omega Speedmaster and have had it for almost 48 years. A little treasure and a piece of history on my wrist. I love to show people the caseback, where circling its perimeter it says "Certified by NASA for all manned space missions." And, in the era when mine was made ('71- '74 as nearly as I can tell), in the center it says "First watch worn on the moon." And a new one today costs 28 times what I paid back in the day. I'm not now and never have been rich but I really like my watch!

[@ajith3]

Jason I watch all your videos and it's super useful and informative. I am also an automotive engineer and love to watch your videos and as soon I saw your video I'll hit like button as soon as possible because I am damn sure that at the end of the video, I'll have clear idea about what you were saying. Keep going dude!

[@EngineeringExplained]

Appreciate it, thanks for the kindness this morning!

[@mwaldyke]

These videos are masterclasses in inductive and deductive reasoning. They should be required for anyone who wants to learn to think - not just engineers. Keep up your excellent work!

[@LarsAgerbk]

I don't have the mechanical understanding to get a 100% of this video. I still watched it to the end and enjoyed every minute of it.

[@maddymiller1002]

Dude! I had only seen your glitter bomb videos. Your car vids are somehow even better!

[@EngineeringExplained]

Haha, the roasters are out this morning 😭😭

[@maddymiller1002]

​@@EngineeringExplained Haha. but seriously, your videos are twice as engaging and with slightly less gimmicks employed. Thanks for all this content!

[@videomaniac108]

Carrol Shelby had the best explanation as to why one would want a high horsepower street car. When asked by an interviewer if he thought that his high-power street Mustangs were too powerful he said: "too much horsepower is just about the right amount to have". I totally subscribe to his point of view.

[@RobbieFitzgerald]

As always, your videos are top notch. I have zero interest in ever owning a car like this. But I appreciate the work that goes into designing and building it. By the way, I think Rimac is pronounced as Rimats.

[@myronalcock4716]

Thanks Jason, I was intrigued by this and you are the guy to explain it! Edit : We agree 111% on watches 🤣

[@everettcitty]

I get what youre saying, but literal necessities in a world full of roads and a lil gadget to tell time faster are not comparable, even in the grand scheme of opulence

[@voltgaming2213]

Watches are best for their mechanics showcases and the mechanics you mentioned used to give precise time in a watch and not be affected by gravity,it was invented for necessity ,it is now used as more of a showcase of watchmaking skill

[@Iwaitandwait]

Finally, a good video to eat my lunch with.

[@mechaman7818]

"Cool engineering is cool engineering, whether it goes tick tock, vroom vroom, or brap brap."

[@matthewsteed6822]

Great video. Thank lots. What happens when the cover the motor for the speed run DROPPING The drag coefficient?

[@theAessaya]

Whoof, 24.2C discharge rate is up there in the realms of high-power hobby-grade RC cars, and in those the batteries don't last very long usually :D Pretty crazy.

[@danielkool5752]

Big smile at your last second of the video, Great job

[@nitinm1242]

Loving the names of the video sections

[@1234Tubie]

Wait! I'm an EE and own a rare Aventador 50th Anniversario in gorgeous Giallo Maggio with a rare automatic Omega Michael Schumacher race series to match its beautiful face color to the car. People always had positive comments about the watch to match the car color.

[@Cpm_legit54]

Thanks for Watch-ing😂🎉

[@jinan_hwasal]

when i see those coloured writings with all the drawings on that board im getting ptsd in my collage days 😂😂

[@pitiso74]

You must be a dad Jason. Nicely done. Thanks for watch...ing!😂😂😂

[@LTLGamer1]

Looking at the tachometer footage, I saw that the output of the electric motors starts dropping to zero as the car hits 444km/h, then goes up to 445km/h before it decelerates. IMO this suggests that the car needs *only* 1000bhp to maintain 445km/h, the top speed the car is limited to i.e. the drag coefficient is lower than the figures suggested here.

[@jaded3king]

The pun at the end was exceptional 😂

[@MayhemCanuck]

You are forgetting one of the limiting factors and most important I think; The Tires. At 445kph they are already not having a good time I mean a failed tire at any speed is a bad time, but north of 100kph it can be a bad thing let alone 445kph.

[@skrewylewy3259]

with the vr16, they could have had it n.a. By lengthening the short runners, to make it the same length. Also covering it in the intake manifold. the exhaust well it would be a piece of art honestly. f1 have runner that adjust due to intake pressure...js

[@MickeyMishra]

If it was not for engineering like this, I would be a very plumb man. It always gives me hope for the future.

[@SuaveGuy23]

They’re going to make a version with the engine bay closed to achieve better aerodynamic efficiency. Completely changes things

[@TiggerLyOne]

Bugatti didn't mention that it also added a flux capacitor that would propel Tourbillion from 88mph to 314mph in 88seconds.

[@timquerengesser1561]

Thanks for Tudoring me on this.

[@theotherguy6951]

I’d like to see how this car performs in the 0-400-0kmh run

[@finesse7943]

So the obvious question is can you vary the batter output from the engine to be only additive such that you aren't "flooring it" (max drain) but are say at 50% on the battery but 100% on the gas engine? Wouldn't that prevent the heating issue allowing you to go faster?

[@aurorajones8481]

Ive maxed out at 200 mph on my V4S...I had an RSV4 RF that could only best 186mph w/ the race ECU. 200 is no easy feat. 300+ is my cup of tea.

[@J0hnD0e]

have you previously talked about electric engine/motor maintenance?

[@jamesengland7461]

Over 30 years ago, I got my first restaurant job. I was required to take my watch off to make food. I briefly toyed with a pocketwatch as an alternative, but probably only checked the time on it twice. Threw both timepieces in a drawer forever. Don't miss either.

[@JoaoBasso10]

In the end you say in order to acheive that top speed it needs more power... do you mean more battery power? Regarding the ideal difuser angle, I beleive it varies with the speed where you want max efficiency. And the starting point of the difuser ramp is related to where you want your aero centre pressure point.

[@thewhitecarrot]

Casio = Corolla Rolex = Tourbillon

[@Grimm-Gaming]

Tesla = Smart Watch Which is why there always breaking.

[@cod99xd]

Man I love your videos

[@onecreative1]

Do you think clear covers over the engine compartment would reduce drag enough to make it to 500mph?

[@TarmenAmzarian]

Knowing how difficult it was developing road legal tyres that could reliably go 420 Kph for the Veyron compared to the 375-ish previous limit, makes 500+ seem like a cursed fever dream, but I hope that I'm wrong.

[@myusername3689]

RWD V16 Bugatti(when in ICE only) Imagine saying that to a Bugatti fan back in 2015.

[@mrgcav]

The Tourbillon looks better than all its predecessors. As for watches I want a v-16 watch. I can sell the watch and buy the car or a nice house. Great video Jason but need less metrics and more English measurements.

[@DickVanPaiton]

Incredible how similar and different this is to the 992.2 GTS :-O

[@srantoniomatos]

Cosworth: Valkyre - v12 6.5L (4 x 3 cilinders) T 50 - v 12 3.9L (4 x 3 cilinders) Bugatti - v 16 8,3 L (4 x 4 cilinders) ? Is the same basic (hibrid) engine right?

[@DaneRThomas]

I would love to see Mate invite the team from Koenigsegg to bring their Jesko Absolut to Ehra Lessien to go head-to-head with the Tourbillon.

[@simtalkayak]

So, I never liked the look of the previous cars, but this, this is sssooo much more elegant. I don't understand why they didn't put the engine under a glass sheet, for better airo, but hey, what do i know.

[@rymreaper]

However it is still Naturally aspirated. Would you make a video on how much more boost they would be able to create with turbo chargers ?

The difference between an expensive watch and an expensive car is the following: the expensive watch is actually worse than a cheap one. A mechanical expensive watch will be less precise at its own job: telling time. When an expensive car is supposed to be faster, or better at doing certain stuff, maybe more comfortable, more silent, more powerful. The only positive point of an expensive watch is that it's "prettier", But at its job, an expensive watch is worse than a cheap watch. That may be why you don't find expensive watches attractive but you do like cars.

[@aaronschen9896]

All it needs to break 500 then is a bigger battery to offset the degradation 24kwhr/.68 seems good enough by your math. Tourbillon is about as good of a marketing name as I've ever heard for anything. Complex, intricate, excessive, interesting.......well done Bugatti marketing team.

[@briangreen6602]

The tires are probably the limiting top speed factor ?

[@RC_RZ]

I'd been waiting for you all these days man😂

[@captainobvious9188]

Electric motors can make 100% of their torque at 0 rpm but their power always falls off at the top end of their speed range (because physics). Everyone gears their EV motors for acceleration and efficiency but not top speed. So the front motors will be significantly down on available power regardless of the battery at top speeds. This is also why the Nevera output scales down at top speed.

[@madjh8]

Sorry but I use a watch (Seiko turtle or Casio and sometimes others) because I don´t whant every time a phone in my pocket and it is easy to lock at your wrist than find the phone ot take from your pocket, push boton or til them etc. And don´t need electricity or something like that (only the casio and it is solar). Said that ...it is masterpiece. Very cool and a joy to the eyes.

[@chuckborris804]

Watches are too fundamentally a great piece of art and engineering just like a good car. But that insane show thing you showed? That's indeed ridiculous.

[@Sithhy]

Just a little thing, 'Rimac' is pronounced as 'Rimats"

[@robertstockton2071]

I’d love to see this compared with a hybrid Koeniggsegg, since their Quark-E Motor pulls 250kW from a 4.5kWh battery, for a ratio more than double that Bugatti number at 55.5

[@adamjanowski84]

Very well reasoned through. Great content!

[@insidious34]

"800 HP... so still decently quick." DECENTLY

[@1nicube]

A VR16 would have been insane! Imagine a vw VR6 but with 10more cylinders 😂

[@Goodkiwibloke]

24C discharge at full power - insane. The battery must be a regular service item that is replaced every few thousand km's At full powèr, the battery would be fully drained in 2.5 minutes

[@EdgarRenje]

It's kind of ironic you can't understand the fascination about watches because it's actually the same reason as your fascination about engines: are they necessary? No. Are they the most advanced, efficient technology? No. But it's all about engineering!

[@anthonyguay7990]

Have you considered the top speed potential if they only used the combustion engine until 400 km/h and then started applying the electric power *gradually* rather than 100%? What if they used 50% electric power from 400 km/h until X and then went 100%, wouldn’t the power available by the end be more than 72% since the battery is used at full throttle for less time? <a href="#" class="seekto" data-time="1005">16:45</a>

[@TheRealStructurer]

I would not be surprised if they will come with a faster version later. Better aerodynamics, lighter and new battery tech? Question is will it have any complications 😉

[@sulk9677]

<a href="#" class="seekto" data-time="776">12:56</a> Why is the 24.2 in red sticking out the graph ?

[@brunobegic3841]

In typical Bugatti fashion they will most likely make a few crazy special editions, one of which will surely be made just to break that 500km/h milestone. I feel like they gave us clues on how they're gonna accomplish that. So each of the three electric motors is capable of producing 400hp but are limited by the battery, so in theory if they make the battery capable of giving those three motors all of those 400hp we're looking at a 2200hp car.

[@aggonzalezdc]

The same argument you used for watches has been used for cars. A cheap 20 year old camry or civic will get you anywhere you need to go. But my car brings me joy even if others dont understand it. Watches arent that dissimilar.

[@EmilioBaldi]

Bugatti changed from: "we don't put a center display because will be outdated in a few years" to putting battery pack that will dagrade in a few years with thosr power cycles.

[@bodanerius]

I recall Mate discusses rhe aero in a video. Think it was the one Top Gear made on the Tourbillion or Hagerty...

[@davidbee9563]

How do you calculate the power required to accelerate at higher speeds? in drag racing the power increase to cut 1 second off a 1/4 mile time becomes significant. So while there still maybe power available the car just won't accelerate any more to increase the speed. Or to put it in different terms. I might be able to generate the power to go 60kph on my bicycle. But unless I can generate the power to acclerate from 50 to 60 kph, I won't be able to do it without a tailwind or downhill. That is why you need to do a two way run average to measure top speed. Something that may be a limiter for hybrid/electric cars more so than ICE.

[@yojoa-vn5ph]

Excuse me Jason... 😅😅I dont agree with you on Tourbillon's aero figures you re guessing... I know it s just your assumptions... Concerning Frontal Area, I ve calculated it with Tourbillon's spec sheet dimensions and I also find 2.07 m2. But concerning Drag Coefficient, I think it is lower than ur 0.35 assumption. I estimate it to be circa 0.30 to 0.31. Explanation : it is lower, more athletic (words of Achim Anschdeit to Autocar in Summer 2023) and its rear diffuser reduces considerably drag in top speed mode versus Chiron's rear wing up. Plus, Mate said that they could have closed the engine bay to reduce drag but they didn t in order to see the v16. I think what he means by that is that Bugatti could have joined their competitors in terms of drag coefficient as less than 0.3 (Jesko absolut : 0.278 and SSC Tuatara : 0.279) but they didnt.

[@HALDikopter]

I think that tires that hold up to such speeds still have to be developed.

[@635574]

We also need to talk about the front motors, they probabaly dont have a gearbox and therefore they wont be on the same tier of help with the top speed.

[@Dave-but-why]

I wonder if they will take advantage of ram-air..300+kph has alot of effect... To get an extra 400odd HP, would need to generate almost 1/2 a bar if positive airbox pressure..not insignificant! Engine is relatively low 120 HP\liter\bar.

[@AlexanderSio]

Great video, thanks. Always a must watch. I will put my money on your prediction.

[@toto29620]

I have an idea to help them get that 500 top speed, remove that ev stuff and install 4 turbos on this thing with the weight gained.

[@petergerdes1094]

Once you have a battery why not just use an electric turbo like Porsche ... no downside in lag?

[@snxnomercy]

Where are them snails 🐌🐌🐌🐌

[@AIM54A]

Are those electric motors making 800HP at max RPM? As the back EMF increases with RPM the torque they can provide drops quickly.

[@shadowhunterevil8214]

Well, an expensive car gets you from a to b faster, can participate in races(better than a cheap one) and offers more luxury. But there is no better or worse time telling and no watch races, so I think the debate is settled.

[@davidiscostarica6097]

Does the car come with the watch. That looks more work to engineer. How you get a watch to run on a micro V16?

[@eliasmaissour437]

I hope that the record version would just ditch the artsy concept and just be a beast. wa already know that v16 will probably be one of the best na engines out there, basically a recipee for an even better better turbo engine. Would be sick seeing one with the 16.4 badge again. The engine would probably exceed 1800 and even 2000 with the right intakes and turbo geometry. We already know it'll be a longtail design since it would be better on aero so only issue they have is power deficiency . I just hope that the engineers are mad enough to do this. It's far fetched but cool to see. It would alse help differenciate between the 2 models even more

[@pablo9021]

The base model wont hit 500 but there is very likely they will release a model with more power and better aero like the chiron 300+ maybe it will be called tourbillon 500+?

[@toeknee5464]

You cam hear that the clip of the engine they provided is a block on a dyno, it doesn't sound under any load

[@pablomahe1284]

Makes sense That probably means that they'll make a tourbillon supersport like they did with the chiron

[@CameronStPeter]

All it needs is a few turbos and a few stickers, it will get there.

[@Chris-qr3qh]

Hypotheticly could the w16 work if you had unequal lenght headers and intake?

[@NadenaV1]

he just called 800 hp merely decent, thats the kind of power in play here

[@nathangregory_]

You're leaving out one primary subject: price. 4.1 million USD. Subtracting those four (?) lithium-ion batteries would make the car so much lighter, and most importantly, the upgraded V16 would exceed the car's speed. I really don't see the benefit of adding those batteries. Also, whatever happened to the manual transmission in these "supper cars?" Giving these high-powered cars an automatic transmission might be great for those who never took the time to learn how to drive a manual transmission, but it also gives these "new" drivers a death sentence. Another flaw in this car is rear-wheel drive, most likely not even a positraction rear-wheel drive, and not a full-time all-wheel drive......and please don't tell me that it is all-wheel drive with the battery system that won't last you more than ten to 20 miles. That's a double death sentence, meaning not only are you going to kill yourself but most likely hitting another car and taking them along with you. Great car so far.

[@aspecreviews]

Is the hybrid mode all the power sources all the time, or does it adapt to your driving style and switch between limited EV mode, combustion mode, charging the battery, and all the power sources as necessary for the best balance of performance and efficiency?

[@WikvayaHopi]

VERY GOOD

[@hadefsb]

The watch slander will not be tolerated