The World's First CVVD Engine - Genius!

The Patent US8443774 this in the United States Patent and a PCT from 2005.... It allows Variable Valve Timing and vary partial speed of the cam combining both functions at the same time.... In the scope of this Patent literaly say: " The purpose of the device is to enable the opening and closing time AND Duration of the valves to be varied by varying the position and partíal speed of the camshaft in relation to the crankshaft. " It is the first device to combine CVVT with CVVD.

@@plasma081 "first production engine"

@@clv603 It said: " World's First CVVD Engine"

@@plasma081 please accept this gold star for your achievement in arguing within youtube comment sections. No doubt, you have earned many before. He corrected the error to explain once again that it is the "first production engine" using this technology in relation to the context of the video (which combines CVVT and CVVD). But of course you probably knew that already.

From Memory the rover VVC system was taken from an expired piper cams patent. Having driven a car with it I prefer it to Honda's VTEC system as you get a smoother power delivery throughout the rev range rather than that abrupt power change.

That's why they sent everything from animation to mockup, because this is free real estate

YAY more stuff to brake!

@@Mr_Meowingtons .. and more stuff to break as well.

@@Mr_Meowingtons What can go wrong will go wrong LOL...........how many thousand dollars will this take to repair when they learn about its durability? 😉

Mechanical is way more reliable than electric, anyday of the week.

I had that system on my Renault megane aswell. It was the old 8 valve engine, and cost me pennies to repair. Honestly it cost me more in oil to flush (because i left it without the head on over my summer holidays), than it did in parts

Hyundai, the worst or nothing

Now that feature is included in the upper trim levels. We had to pay extra. These damn kids don't know the struggle.

@@More_OhSo The struggle is real.

:D

Whats terrific is not just the idea but that Hyundai actually let the idea run through development and will produce it. I imagine its all about the production costs. In South Korea they can produce it economically while here in the USA maybe not

I like the idea but this seems like an expensive repair that will likely be a common wear item. More moving parts usually means more problems.

Hyundai are really pushing the boundaries with experimental technology and research right now. The n vision 74 is insanely cool, the elantra n is also pretty cool.

Its all about the engineers the brought over from BMW, AUDI Porsche and VW. There maybe a few' former mercedes personell.

Hold applause for continuous reliability after years of use and miles under its belt.....

Here's one to process engineers - the so often forgotten appendage!

What is to explain with a turbo? Exhaust gas leaves the engine under pressure, and the turbine extracts the energy from this pressure. The hard part is having to hook up the ground cart, or diverting air pressure from the APU; for the actual turbine spinup.

@@wyndhamcoffman8961 r/woosh

clearly you weren't paying attention.

What happened in this reply section? I can't make any sense of it

How?

Luckily you can replay the video.

Phill M156. Err......didn't BMW do something similar more than ten years ago annnnndddd........haven't steam locomotives been doing the same thing since forever? Just askin'.

Roger Whittle don’t know about steam engines but Bmw Vanos is timing and duration, not all three. Honda’s was lift & timing. Their high lift cam lobe was engaged by a pin at 5k rpm, no variability. Honda’s was the most fun, it was like having another engine from 5k-8k rpm.

@@phillm156 Obviously, there is no direct comparison between steam and any two or four cycle IC engine, but their valve gears - there are many different types - control the point in the rotation of the driving wheels that steam is admitted and the length of time over which it is admitted. This controls the amount of steam used each cycle and thus, economy. To a great extent, it also controls the amount of power produced.
I was being a bit facetious, but they really have been doing it since before Stevenson's 'Rocket'!

~?. The planet is dying 🚗💨🤯. Electric ⚡️🚗🚲🛴🚶‍♂️🚶‍♀️.
You don’t want to do it with you 👽🔪⛓☹️/😵🔴💩🦠🍖🛒👽. Totally hypocritical !!!! Innocent animal bludgeoned to death, for a hamburger 😒🦠🍔 that is a coward !! Are used to be a coward 😞🦠🍔, but now I’m vegan ✅❤️😬💪, I don’t murder the animals, I don’t torture the animals, I don’t massacre the animals. ✅👍.

if I remember correctly Space X has said something to that effect.

Then you have nothing. 🙄🤦🏽‍♀️

@@JohnLee-db9zt ICE of for toys, and the consolidation of multiple parts to serve several functions is how "genius technologies" such as these have become waisted effort to cling to life. 🤦🏽‍♀️ ICE is a collective of complexity to do a job at staggeringly low efficiency and badly at that. No one rides horses to work anymore this will be like that in a fraction of the time.🐴🤣 So get 'em, cowpoke.

@@JohnLee-db9zt The point is more parts more problems. If you can make something that does the same thing with less parts it is less likely to break down wasting time and resources.

@@absolutezero6423 Obviously, no one has come up with economical CVVD/VT with less parts. So fail to see your point which seems useless.

easy you say. how? with piston speeds so high wouldn't the speed of electricity mean its less precise? pneumatically controlled valves seems complex and a waste of time in my opinion

@@BCzepa considering electricity works at light speed I don’t think so

First idea that came into my mind. Any mechanical surplus adds to added heating and risks of failure. So much simpler and more reliable to do it in software.
But then you'd still have to modulate valve actuating with additional mechanical parts.
And BTW it's not about the speed of electricity, it's about the speed of processing and speed of (optical/magnetic?)sensor reading. My uneducated guess: at least 500KHz if not in the range of MHz. With that minimum it would correspond to 30,000,000 cycles/min. For engine revs of 10,000 rot/min it means a resolution of 3,000 positions per engine revolution, or 1,500 positions per piston travel. The resolution increases even further due to decreased piston speed at the end of its travel.

@@FirieonOG The bottleneck of electronics is how fast a microcontroller / microprocessor can "read" how fast electrical signals can come through (in Hz). If the frequency of these signals exceed that of the chip, then you have an issue.

@@FirieonOG Electricity does, but electronics don't. I am not refuting the argument as a whole, just this statement.

:DDD

240sx guys are now trying to find something other than bearings to spin

Hahaha this is exactly what I thought would happen, hey I have been wrong before and Hyundai has improved over the years but this seems like it will either be nice or a disaster, good on them though for taking the risk

No big deal GMs do that all the time, except they stay spun.

@@Broyourenglishisgood haha w/e bro ;D

They just copied and superimposed orbital paths...

@@josiahr1375 JUST

Except, it relies on an electronic actuator to drive it...

Does that look more reliable that a bugatti-beating drivetrain with 2 moving parts which can do 1 million miles? That motor will get dust sprayed on it up and down town.

@Teslamoanials Derivedit is possible to build a centrifugal control unit which can drive a no linear output it not es easy but only without the Edison cycle option in low engine load scenario a proper ecu can hadel such a thing better

Just imagine trump giving this lecture?

@@codyhatch4607
Hahaha.
Your TDS is showing.

@@codyhatch4607 Oh, that’s just plain mean 😜

*Kudos
By the way

he does repeat some stuff more then necessary

"Cu-Do's"? You had better check your local city and state regulations. 🤣

Is there a test at the end?

Mo G
Yea

where was this? I need the video lol

Lmfao! This guy is a moron!

@@spectrumofreality no u

I need to see that video mate

Only professor Farnsworth can fly the Planet Express ship through 2D!

@@ekummel that show was so far ahead of its time. Terribly underrated.

Luckily it's much easier to tweak established stock tunes than designing stock tunes for new engine technology.

@Allie X Well.. in Theory.. yes =D

not string theory though. The whole concept is bollocks.

Everybody is an expert!

Only a KRplus warrior or cultist would leave such a comment

Except he ignores the fact that Hyundai has a huge recent problem with motors seizing.

2 strokes are valves free, not equivalent but way more simple xD

@@berjerk3425 Oh wow, it just occured to me that you could setup a free valve engine to switch to a 2 stroke cycle for power and back to 4 stroke for cruising.

@@gedavids84 2 strokes cylinder heads are different

@@gedavids84 Yeah not going to work :)

@@gedavids84 new koenigsegg gemera can do that

Rover did this 20years ago nothing new

@@thomasbacon In my car the trunk opens when you hit a bump in the road lol.

Couldn't agree with you more. And this is coming from an Electical & Electronic engineer. Elegant mechanical design just as important, if not more important than just having everything electronically controlled

So true, thanks for pointing that out. In this electronic, information age people forget that mechanical design is still important. Sure some mechanical systems don't translate to an electronic system, but until we are 100% electric we will need mechanical improvements to move us forward. Not to mention there is something very beautiful about a fully mechanical system such as this. All the moving components make my head hurt😜

@@TheDeGhoul You and me both brother

It seems like a very complex apparatus for just a 4 or 5 percent increase in performance or efficiency. But I am told to small amounts of efficiency like that proved to be great improvements over time. like giving every car on the road one extra mile per gallon of efficiency saves millions of barrels of oil a year

You were *determined* to "Be The One" to say it!

I have this engine and you are correct. The theory and benefits yield to complexity and problems in less than 2 months and 1,000mi. I hate this engine and it unfortunately defines Hyundai.

Buck Deniston one thing the Japanese excel in is material engineering. We see many plastic parts in a Toyota (for eg) that is still sturdy after 10 years/300,000 miles. However on a BMW (for eg), those plastic parts would have been crispy and flakes off after 4 years of use

Yi Su LEE right. Knowing the right material to use is a huge and often overlooked aspect of what makes a car reliable.

@@yslee1401 It appears that the Koreans are also exceptional materials scientists.

Modern metallurgy and modern high precision machining. Based on what he said at 11:07, it sounds like even with precision machining they might be matching parts to get the perfect fit. If they are doing that, then the desired clearance range must be really small.

@@yslee1401 manufacturers might do that on purpose, or in willful ignorance just to save some cash unfortunately

Get him something he can emotionally appreciate like a nitro RC car or a small 2 stroke dirtbike and figure out how to fix them together.

^

Well it is a little too technical for a 12 year old to wrap his brain around. When I was his age I liked older cars not because they were fast but because they looked cool.

@@CreatorCade yeah I'd say wait until he's 13 or 14, that's when it all started to click for me. Did my first top end rebuild at that time on a big bore 88yz80 haha. Those were good times.

Josh Cade When I was 12 (at the start of high school) I was already rebuilding engines with a couple of my friends. I had no problem understanding CAM shafts. There’s 12 year old kids today who do very complex coding. If only I was 12 and had 55 years in front me to have all over again.

Gotta appreciate the engineering behind it

@@asit6947 or the laziness of the engineers.

@@Jamie-cz2xu if fatigue science is that easy u won't see people buying Toyota everywhere

@@gdpvk Its a joke lighten up

@Богдан Кондратов or if you dont change oil regularly

@@xXGeth270Xx Its really hard to improve combustion engines further from what we already have. That's why a lot of companies are looking into EVs for more powerful vehicles.

@@xXGeth270Xx no, it's not, it's hard to evolve what is a pretty mature technology I think its pretty remarkable

@@xXGeth270Xx My best guess is it took that long due to engine stress and torque the part needs to endure, plus margins of error and tolerance and a million data points and testing (plus the scientific method for each revision)

@@ericsmith6311 I actually think combustion engines can be improved quite a bit more, I would not be surprised to see a car get 100mpg in flat highways at some point.

If I could spend $95 instead of $100 every time filled up with fuel. I think I'd be pretty happy with that!

Those peeps who miss their oil changes are gonna pay

that has been true for quite sometime now

I won’t...

Cough cough cam phasers

Funny that was my first thoughts.

In this case it can be literal if the oil pathways are more prone to clogging.

Spoken like a true poet!!!!
God bless scottie!!!!

@@Patchuchan; I never even considered that! So trying the 20,000 mile full synthetic oil would probably not be too wise to test this early in the engines introduction? Just sayin'

@@davidwright1653 I'm positive 20000 mile oil is a sales gimmick. Don't leave it in that long.

@@davidwright1653 Telling the average person they can go 20,000 miles on an oil change is a bad idea on any engine as all engines burn some oil.
If they don't check it and top it off periodically it could end up two or three quarts down by the time they do an oil change.

Hyundai: 14,000 $ driveway
Koenigsegg : 14,000 $ for one oil change

Series hybrid - who need multiple rpm?
Electric - who need combustion?

@@markm4603 Koenigsegg freevalve Sent to mass produce in China = 29.99cts for a complete set of valves

@@drzerg2 UFO: We use gravitational levitation !!

me: i sit on chair

If only the Sonata N line comes with AWD, then it wouldn’t be a tire burning machine.

your N line has the 2.5 liter engine. This technology is for the 1.6liter

The duration of this camshaft is too long, and the duration of this camshaft is too short. But the duration of this camshaft is just right.

How to eradicate more coral reefs: take his advice. Does that look more reliable that a bugatti-beating drivetrain with 2 moving parts which can do 1 million miles? Durtech.

monstercolorfun co
The mechanism is new but the type of technical implementation has been around in crankshafts and camshafts for decades. As for any newly designed engine also this one could have a flaw but I wouldn’t consider the risk of that much higher for this engine.

Everything uses Maths/Maths can be applied to anything.

...much like atoms.

Having a theory is one thing. Realizing it is a different story

yes. there's a long history of auto engineers trying too hard to implement mathematically beautiful ideas. the germans are notorious for it, going back at least as far as ww2 tanks that were technically very superior on paper, but much more expensive than russian tanks and difficult to maintain. maybe the best example though is the wankel rotary, with its mesmerizingly elegant geometry, but fundamentally unsolvable issues with lubricant flow and heat distribution. a lot of R&D that became endless money pits and never saw production could be described as "a *perfect* solution that we _just_ need to iron out a few little bugs". this is also the story for virtually *all* amateur re-inventions of the internal combustion engine. imo, congrats to hyundai that they've turned this idea into a real world solution

This isn't a comment

Happens...

True but still not mass produced. Will make for a good proof of concept though.

Doesn't matter. This system could still be more prefered, we will see when the cost and reliabillity data comes. Possibly free-valve tech will be much more expensive and not worth it for the cheaper economy class engines (Where Hyundai/KIA are brilliant). Anyways competition is always a good thing :)

i was just about to comment this. if freevalve turns out to do half the things its said to do it will be revolutionary. its sucks its taken so long to make its way into production cars

@@exidous6831 I think china auto maker Qoros is/were gonna mass produce cars whit free valve system from konigsegg

I love them

they just aren't as efficient

@@jamest3597 But less likely to malfunction randomly. And Hyundai has really thought about reliability when they implemented those oil holes there. Time will tell, but for some reason I could see those things last quite well (if people don't ruin them with long life oil changes...).

As a mechanical engineer, so do I but I'm biased what can I say

@@whogavehimafork lol

Americans pronunciation of European cars is really ignorant... “KERN” Not “CONE”.
KOENIGSEGG.

I was gonna comment that but found your comment atleast ik theres still hope in humanity

I'm saying

Americans don't need to worry about pronouncing foreign words, from the old world, since y'all can't pronounce American words.... And since American companies run the world, you're all a bad joke of bitching whiners to us anyway...

@@nc3826 lol, American companies don't run the world Samsung and Toyota are 1and 2. Not American. It's easy to tell you are American, with your ignorance and all.

He is good at explaining, but I waited 12 minutes of how before he even began to explain why it is useful. How about the quick why before the long how? And it sounds like he's yelling at us.

@@BrBill
>sounds like he's yelling at us
Have you been to Scotty's channel?

Your college professors don't really care if you learn or pass. You are just another number and part of their paycheck.

Nowadays, the average American worker is traveling much farther to get to and from work or job site to job site. 100,000 miles is NOTHING. Most of us will put that on a vehicle within 5 years........so the "10 year" end of the warranty is a joke. I bought a new 2000 Toyota Tacoma 4x4. 20 years later, it still runs & drives just fine on the original engine ( 3RZ 4 cyl ) and auto trans with over 346,000 miles on it. I don't live where they salt the roads every winter, so I don't have to worry about rust. Got a friend who has been working for Toyota as a mechanic/tech for over 20 years now. He says there's no way in hell that even the new Toyota's with VVT will last anywhere near as long as mine. He should know, he works on all of them every day, including his side business.

@@howabouthetruth2157 I swear to god it has something to do with the blocks being cast iron rather than aluminum. You cannot go wrong with a cast iron block and the durability it brings with it. granted the heads for the RZ series at aluminum but still, my iron block, aluminum head ranger is kicking strong day to day with 150k. My moms 2013 corolla let loose at 145k.
i mean i could be wrong but....cast iron is considerably stronger than aluminium

A joke of a warranty is the 3y/36k. Your "average American worker" comment backs it up.

@@snowysysadmin59 Your mom's 2013 Corolla had variable valve timing. Those usually won't last near as long as the older ones. My little 3RZ motor also has a real timing chain & gear too, unlike the V6 from the same era that has a timing belt that needs replaced. Mine also has a factory forged steel crank. SO glad I didn't buy the V6. The only down side to aluminum is ya can't ever let em run hot. But I still prefer an iron block of course. After Toyota canned all of their simpler engine platforms that are famous for super high mileage ( especially the 4 cylinder platforms with forged cranks ), to replace them with all new engines with this damned variable valve timing, the durability has gone down hill. Still more reliable than most of the competition, but no way they are going to last like any of their older engine platforms. The only exceptions are these guys running highway miles only. Plus, all of these newer VVT engines have to run oil that's nearly as thin as water. That in itself poses durability issues, and every good mechanic will tell you that. But ya can't run any other oil type, because the super close tolerances & teeny tiny oil galleys in these newer engines need that water thin crap to run.

If you think they care about reliability you are so wrong. They care about CAFE!! If it breaks in warranty they fix it on their dime... if it breaks out of warranty it you big dime!!

Honestly dude they have been on the upward trend since like 2012 it just takes awhile to get the recognition.

It's all about pressurized oil in thin films acting as the sacrificial surface, which is a trip all on its own. Like _"yeah, I'm just going to use this _*_liquid made of strings_*_ to separate hundreds of Kilowatts of mechanical energy."_ Sometimes I swear this has to be a fever dream.

@@AtlasReburdened though even without oil most engines will last a bit longer than minute.

Plus, that boost when it kicks in, yo.

Initially, it would be a bit of an ask to abandon Honda's VTEC in favor of CVVD, if only because VTEC is so smooth and bulletproof, especially in Type R. Anybody remember BRM's H16? That's 16 pistons, not valves. That it ran at all with the technology of the 60s remains a mystery. Poor Jim Clark - 1 win at the USGP was it, and they retired the motor. I'd prefer to see the CVVD progress to a Type R version, and a year's hard use in a car, before considering it. And I'd like to see some serious HP/torque figures to recommend it above VTEC's output.

@@truantray I prefer another VTEC related phrase: "all the lag without a turbo!" :)

*Honda made in Japan
not its *chinese counterfeit copy

@@kenkalajdzic that's one of my biggest complaints with my Civic, when I get to 3k RPMs I have to wait for power. I rarely go above 3250-3500 RPMs so it is really annoying. wish I could choose to give up the extra ~8hp

My girlfriend's mom recently bought a new Kia Optima. She took us for a ride in it and I told her I heard valve lash and she should get it looked at. Car had under 1,000 miles. She was offended I had the nerve to suggest her new car had something wrong. 2 weeks later she was getting check engine lights and the engine was running horribly. The valvetrain was self destructing and she needed a new engine. It was fixed under warranty. But I am still really turned off by the fact her Kia didn't last a month before the engine was trashed.

@@Plur307 it's not unheard of for engines, transmissions, diffs to break so early. It's a manufacturing fault, so stastically it's basically impossible to get rid of all faults

@@Plur307 Kia is killing it(self)

@@Plur307 Literally all manufacturers encounter the same problems. Engines have thousands of parts, both mechanical and electrical, and the most likely time they'll have issues is when they're new.

Obligatory "Hyundai and Kia are trash"?

_weird_ trick.

LOLOLOLOL

I won't say that it would not have been possible without computer simulation, but I doubt it would have been as good.

Why did it failed? How much power does it typically needs?

This is more of a miller cycle engine, since it will be turbocharged. Meaning the diferances in power bands might not change too much.

@@shamandarnell That's a really good point. I continually forget the Miller exists.

@@aaronhowell2011 Toyota has been using atkinson-miller engines in their hybrids since the Prius came out in 1998. The narrow rpm band for miller fuel efficiency is accommodated by the eCVT.

if you can handle his voice and cadence... which bothers me after a short time.

Not everything, only one valve group by design failure point is on the pin

A guarantee for 10 years/100,000 miles, then you're on your own. Lol! It has an actuator which is electrical, so everything is not really mechanical, in my opinion.

@@TononiaWorld if a valve fails it will crash against the head of the piston and your wallet will be pretty pissed off

@@lexol3347 I prefer a vacuum-assisted actuator if you ask me. then it's truly mechanical

Most engines are interference engines, so yes, if something fails in this intricate system and a valve doesn’t close your engine will promptly grenade itself

The cam is not moved or controlled by a spring at all. The valve is closed by a spring, of course, but that's true in every conventional engine.

"Bro did you feel it hit VTEC"?

Yeah if I had a choice over hyandi or honda the awnser is VERY clear
...

@@matthewb7049 the answer is always Subaru

Can you imagine a timing job ! Hope your right

The timing process would be the same as a conventional timing chain set-up.
Seeing as the camshafts main body is rotating at a constant speed, any changes would be done by the ECU by moving the system through it's range of motion.

@@ashtompkins7887 I guess it would, trying to think if the motor that turns would be some sort of stepper motor or there are extra sensors along the cam for the ECU to know where all the positionings are? If you disconnected the battery would the ECU retard the cam to 0, set it's position or use another cam sensor?

ifell3 I was about to say the same thing; surely that actuator has absolute positioning, otherwise that could go really, really bad.

I'd imagine it'd be a stepper motor. And that it would default to a 'zero' position in the event of a system fault. (Failed motor, broken wire, software glitch etc)