Variable Geometry Turbocharger - Less Lag, More Torque!

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10 жыл бұрын

How variable geometry turbochargers (VGT), or variable nozzle turbochargers (VNT) work. Variable geometry turbos use vanes to alter the air flow path of the exhaust gases to maximize boost across the entire rev range. During low boost operations, the vanes create a narrow path to the exhaust turbine. As the revs increase and exhaust builds, an actuator rotates the vanes, increasing the area of the path to the turbine, and allowing for greater flow, thus increasing boost at higher RPM. Variable geometry turbochargers can make twin turbo charging systems obsolete.
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Пікірлер: 456

@mjintegrale 10 жыл бұрын

as a mechanic of 30 years I find your videos easy & educational.I was finding vgt difficult to understand but this video has enlightened me thank you.

@EngineeringExplained 10 жыл бұрын

Very welcome, thanks for watching!

@BirdiesGoCherp 4 жыл бұрын

I can't believe this was 6 years ago. I subbed to you like 2 years ago I think when I first came across this channel. I'm so glad there's such good explanations for stuff I'm interested in. Thank you.

@xxwookey 27 күн бұрын

10 years ago now, and he looks so young :-)

@SpikesAllOver36 9 жыл бұрын

Dude...you make things so much simpler and understandable! Great work!

@MyJizzyjay 9 жыл бұрын

I find it amazing how you can explain all these different concepts so well! love your videos *__*

@thequizze1048 2 жыл бұрын

Dude you so old

@tommydmot7725 5 жыл бұрын

You just saved my 6.6 dmax from a twin turb setup. Love how you explain things on a level that keeps things on a understandable level. Keep doin what you do bud.

@RickHolland1968 3 жыл бұрын

Great explanation, am looking at a 2018 Cayman S that uses one of these turbos, on the test drive I was not aware of any turbo lag at all. I remember the last RX-7s that I believe used a small and a large turbo to solve the problem, lots of extra complexity. Thank You again.

@jimnyvet9386 4 жыл бұрын

I have been looking for a while for an understandable explanation of this, and I found your video. Thank you for this, even though it was from 2014, it's invaluable info. You explained it so well, I now know how this works. I have a 2018 Duramax with the variable vanes, and I really love knowing how this works. Thanks.

@tylereldridge6945 5 жыл бұрын

Great video; super explanation on characteristics of VGT’s!

@nithinj1991 9 жыл бұрын

All of your videos have been truly amazing as it takes our comprehension to a whole new level :) Kudos!! Looking forward for more...

@alstein3487 4 жыл бұрын

Great easy to understand thanks!

@markjmaxwell9819 5 жыл бұрын

Very nice explanation as usual. I was just doing some research on variable pitch ducted submarine propellers. Similar principle with the variable pitch for optimal performance at various rotation rates. Also changes the acoustics and cavitation. While the duct increases the efficiency and lowers the cavitation. But the added mechanical complexity does have it's drawbacks.

@Skyhawk656 10 жыл бұрын

Always love your videos they work and explain things well. Another great job here.

@Cumminslife 8 жыл бұрын

They work really well! we took one from a 2012 dodge ram and installed on a 1992 12v dodge ram

@chickenonugget2269 3 жыл бұрын

This really helped me understand what’s wrong with my turbo, I already know the vanes are seized but I didn’t know what the vanes were and now I do

@JacobVossFilms 10 жыл бұрын

This was an amazing video man, absolutely loved it! Learned a lot :)

@EngineeringExplained 10 жыл бұрын

Thanks!

@bamsuth9650 3 жыл бұрын

was

@allajunaki 10 жыл бұрын

Fantastic! I always knew the basics of a VGT, but most of the other explanations on the web conveniently left out on how the Vanes are actuated. This is why I watch your videos, there is always something new to be learnt, even on topics which you already know. Armed with a Board, you manage to teach better than most of the videos with fancy animations. Keep up the good work!

@EngineeringExplained 10 жыл бұрын

Haha thank you! I make do with what I have - in as timely of a manner as possible.

@dennismendoza4208 Жыл бұрын

@@EngineeringExplainedwhat controls the linear actuator of the vgt is it the ECM? 🙏 Thanks

@kekegeiger9888 9 жыл бұрын

love how his boost vs. rpm graph looks A LOT like a torque curve comparison between Evo 3 and 1-series ///M. nice video btw.

@nrs6956 4 жыл бұрын

Impressive presentation as usual. Thank you.

@havocspree 4 жыл бұрын

Thank you jason, you are my favorite teacher.

@lewismoore9n3 Жыл бұрын

Great diagrams and explinations! 👏 Getting my head about my VGT turbo on my VW Polo 1.4TDI Bluemotion.

@akshay.pawar00 8 жыл бұрын

awesome video! Gave me all the required knowledge abt the topic. Motivated me to do research on this topic. Studied the whole topicthroughly. Made Review Paper on study variable geometry turbochargers. Gave a seminar on VGT. Thank u so much for inspring the Mechanical Engineers!! you are doing a great job 👐👍👏👏👌😀

@Nabiry 10 жыл бұрын

Very concise and simply explained. Thank you very much!

@dazlad1972 Ай бұрын

Finally.... someone who actually explains it properly. Thanks bro....been looking for ages. Don't suppose tou know how to reduce the boost on a vw tdi vnt turbo.

@rakesh10741 10 жыл бұрын

You are amazing in explaining ...and you do it in a ease...

@Chefm4477 3 жыл бұрын

Excellent description!

@redbarron9389 2 жыл бұрын

Hands down great explanation!! Thanks!!

@dakotaalexander9292 4 жыл бұрын

Love how you explain everything so well. Nice vedios

@RandomName.. 10 жыл бұрын

For those wondering vgt are used for instance in VW TDI's since VW mk4 to date.

@kevpinder6821 2 жыл бұрын

Well done young man for helping me in plain english understand this concept.

@benoitperrault6805 6 жыл бұрын

Love the diagrams!

@beomjinko Жыл бұрын

awesome video with amazing explanations!

@king.dannyman 10 жыл бұрын

Nice to get to know this better, I've always thought that this turbos are great for high boost and high horsepower aplications. The only con is that I think is too expensive, i don't know. And making the setting of the variable nozzle for the correct spooling performance might get tricky. Keep up with this videos

@physicsudel2013 4 жыл бұрын

Awesome vid explanation. Seems alot of car manufacturers just PID the wastegate. however I was surprised to come across vehicle repair video where a diesel engine had a variable turbo.

@saleemhaulkhory8234 3 жыл бұрын

Thank you. Brilliantly explained.

@mychaelpierce8049 2 жыл бұрын

Great explanation. Thanks for sharing

@lvl0nk 9 жыл бұрын

very well explained man. Keep up the good work.

@ts31966 2 жыл бұрын

Excellent video! Please make a video talking about new turbo technology.

@neilxpeart 9 жыл бұрын

Your videos are awesome, thanks!

@angelesdy6738 5 жыл бұрын

Well explaine sir. This vgs turbo charge is use in isuzu d'max and mu-x. I' m from philippines. Great innovation . Keep up the good work sir 🤘👍😎. God bless you

@lordieshepherd 6 жыл бұрын

Thanks. I have a much better understanding now

@Unb3arablePain 10 жыл бұрын

What's also great about this system is that it splits the turbo, making it more shielded from heat.

@bloodprince143 4 жыл бұрын

I am an finance grad and i got this perfectly well! Good stuff

@vivid_paladin3015 4 жыл бұрын

first video I watched definitely subscribing

@titusklumper 10 жыл бұрын

Very nice video! Perfect explanation! I like to point out the biggest con. of a VG-turbo: It's nowadays only used in diesel applications because of the lower ignition temperature. The module with the vanes is called the Nozzle and the vanes won't be able to handle the higher temperature of gasoline. Nevertheless I'm working on a gasoline VG on my design team. The newest VG's use a rotary actuator mainly because they are smaller.

@R.B_B Жыл бұрын

9 years later. I'm look about VGT turbos in gas or Ethanol engines. How you project goes?

@Chaiyapol111 8 жыл бұрын

very clear explaination

@haririalaa6487 9 жыл бұрын

great explanations..! keep up the good work :)

@condicionadoar4761 13 күн бұрын

You are a really good explainer, thank you

@prabodhsam4083 7 жыл бұрын

I loved it man ! thanks a lot got my advanced IC engines paper tomo

@FireBird7766 10 жыл бұрын

Wow, that's really neat

@locnguyentan1657 7 жыл бұрын

thanks a lot for the detailed explaination! :D

@DestDroid 10 жыл бұрын

Great video!

@timofeyryzhuk3245 4 жыл бұрын

good job, young engineer

@schman111 8 жыл бұрын

Dude, big fan of your channel...just wanted you to know your KZfaq videos pop up consistently (googling) when trying to educate myself on various parts of cars engines and turbos. just wanted to say hey...and thanks for the awesome informative content. high 5 ✋

@EngineeringExplained 8 жыл бұрын

+matt o'malley Really appreciate it, thanks for watching!

@schman111 8 жыл бұрын

+Engineering Explained I almost gave u the "verbal tip" (serving industry), with the compliment, the high5 and NO like. liked. Thanks for the reply

@edgartavares2353 10 жыл бұрын

dude youre awesome, it makes perfect sense

@ayushgupta5061 7 жыл бұрын

very well explained !

@abdullahmohammed2955 19 күн бұрын

i love you man, i always do thanks for your help

@GaneshKumar-ch2dk 7 жыл бұрын

nice explanation, Can you make an lecture about "Turbocharger testing methods" like gas stand test

@fatsuit7469 10 жыл бұрын

thank you alot thats was very helpful just started my job in the diesel field i know alot about turbo's but this made me step my game up thanks again homie -cam

@manuelzamora8465 7 жыл бұрын

Thanks so much

@papaD97 10 жыл бұрын

Video idea: 5 stroke engine concept. You just make everything easier to understand, which is why I follow!

@IhorVasutyn 6 жыл бұрын

Great video and explanation. I feel like on 2.29 left image represent high RPM situation not low since you have a lot of gas and you need to close variable valves to let high pressure gas flow around turbo. Right image for low RPM since use all exhaust gas to rotate turbo (valves are opened)

@mcanderson0 4 жыл бұрын

I came here to say this

@RobertGracie 10 жыл бұрын

My Dads 2002 Saab 9-5 Hot Aero Estate has a Variable Geometry Turbocharger in it and it pulls from 1800rpm right up to 4000rpm thats when the turbo is at its sweet spot I believe although the revs could be higher I need to check that out!

@falikoukhalilfofana9554 4 жыл бұрын

Thank you.

@kowalskielbeh7005 10 жыл бұрын

Great video thanks.

@MrGsteele 3 жыл бұрын

Perhaps I misunderstood; it seems like the vanes would be open wide at low rpm, to maximize exhaust thrust (assuming wide open throttle, low rpm) in order to spin up the turbine wheel quickly, eliminating lag; then, at high rpm, to eliminate overdriving the turbo, you'd close the vanes to keep turbo speed within rational limits, bypassing the hot side turbo wheel and venting directly to the exhaust.

@macaron3141592653 8 жыл бұрын

VGT is love, VGT is life

@nandhatobby7208 6 жыл бұрын

explanation is good.

@amritbhowmick8310 10 жыл бұрын

Thanks dude...

@RapsheetRecordsLlc 5 жыл бұрын

Thanks buddy

@MOHITSHARMA-lr7ii 10 жыл бұрын

GOOD ONE

@SUVODIP1000 6 жыл бұрын

Great...but can u please upload a video on Volumetric efficiency and it's impact on torque and also about valve overlapping and it's impact on low to high rpm

@thesmellyranga 9 жыл бұрын

All this stuff is so damn interesting

@Malacsult 10 жыл бұрын

Great explanation! I'd suggest you reviewing centrifugal clutches (like the ones in pocket bikes and such), since theres not really a good one on YT,

@EngineeringExplained 10 жыл бұрын

Did a project on those in college, they're pretty cool devices.

@amerfuad 9 жыл бұрын

thanks alot ..

@VBshredder 5 жыл бұрын

Hard to believe this can be made reliable with all this going on at exhaust side temps and 100K rpm, but apparently they do it - wild!

@aymanalmateeg 10 жыл бұрын

Awesome

@cmiddleton9849 6 жыл бұрын

Could we have a video on a vnt and how they deal with over boost using the egr valve

@ladjkaoz 10 жыл бұрын

Nice vid... bro...

@solidtactics 5 жыл бұрын

Hero.

@dr_jaymz 4 жыл бұрын

Sometimes when you think the turbo is blown the ring and vanes are just sticking usually due to combustion deposits. It often whines a lot more when this happens and you notice much more lag depending on where they are stuck.

@darcar7319 9 жыл бұрын

Very good video to get the big picture about VGT. Stuffs explained in simple ways like you did shows a deep understanding of the subject. Keep submissing videos please. Congratulations!!! P.S.: I want to know who are the fourteen moron who didn't like this video LOL

@tekamstheone4545 10 жыл бұрын

Thanks for the video!!! Could you ameke a video about adjustable compression ratio engines?

@EngineeringExplained 10 жыл бұрын

Perhaps eventually!

@Missosalty 10 жыл бұрын

I just wanted to know if there should be some way of compensation maybe some other variable startors on the inlet side because it seems there would be some inefficiency for both the high and low rpm for the turbo in the hot section as compared to the intlet side as it travels through both the settings..

@SexierMink1699 3 жыл бұрын

tfw when my 05 Tanky Avensis has this and yeah its fun hear it spool

@revanthaliasmikesteel2742 5 жыл бұрын

Tqsm bruh

@drkjk 10 жыл бұрын

The Bosch VGT seems to work on a different principle, as a boost limiter. It appears that at low RPMs the vanes are closed to provide maximum airflow to the turbine wheel. However, as RPMs increase the vanes open to act as a waste gate and prevent over boosting.

@tomaszoslizo9226 6 жыл бұрын

drkjk as far as I know the same applies to KKK.

@purushothamansrinivasan7420 3 жыл бұрын

Thanku

@The_Soggy_Orphan 10 жыл бұрын

Can you please do a video on rear mount turbos!! Been thinking about doing it but not exactly sure how effective they are compared to alternative options. Engineering Explained

@dreamzcatcher 9 жыл бұрын

those vanes open to prevent overboosting at high rpm and not because you want more air as you said.

@InSearchOfReality 10 жыл бұрын

Great video! Maybe add a link to cut-away photo's of VGT/VNT?

@MrIrrepressible 10 жыл бұрын

Nice vid as usual. Have u done a vid on wheel spacers?

@EngineeringExplained 10 жыл бұрын

Thanks, nope.

@MegaBuster777 10 жыл бұрын

Two of these in a built up 3.2 SHO made by yamaha would be pretty sick.

@fahemabdelmalek5655 3 жыл бұрын

Excellent explanation, I have one question, this kind of turbo works at idle?

@acarenthusiast2114 3 жыл бұрын

This is engineering gold

@D4N1011011 5 жыл бұрын

Apparently Suzuki is planning to make an engine with one of those!

@eslamtower 10 жыл бұрын

excellent,very clear .viva mechanical engineer :)

@EngineeringExplained 10 жыл бұрын

Los ingenieros mecánicos!

@aotrizsb 8 жыл бұрын

thank you. can you make a video with a comparison VGT and CVT? I want to understand them both.

@hectorpadilla3062 4 жыл бұрын

One of those is a turbo the other is a transmission

@morpheusjr373 10 жыл бұрын

Do twin scroll next!

@EngineeringExplained 10 жыл бұрын

Just for you! haha so rare the requests and videos actually line up..

@9j4a2mz 9 жыл бұрын

thanks bro :) your explanation is very clear and easy to understand. i am going to hit "like" and subscribe to your channel too :)

@HateCrewReaper 9 жыл бұрын

Man these things sound awsome! Do they use these in F1?

@ReyLaFleur 6 жыл бұрын

Apparently these are gonna somehow be used with mazdas new Skyactiv X HCCI engines to modulate the cylinder pressures for compression ignition