How a TDI engine is made and assembled on Audi Q7 TDI

[@1spocko]

Very imformative video. On minor issue at 3:25, the turbo charger does not draw out the hot exhaust gas. The exhaust stream flowing out of the engine spins the compressor wheel on the hot side of the turbo to incredibily high speeds. The compressor wheel has an integral shaft that runs on two bearings and passes through the turbo body to the turbine side. Here the turbine wheel, driven by the compressor wheel on the hot side, pulls air through the air filter and pushes it into the engine.

[@topolino70]

It would be so nice to work with shiny new parts once in a lifetime.

[@AliG8torGamers]

Good engine sad but its expensive as parts.

[@MidShipCivic]

How was that laser honing ? I've never heard of that wasn't that a thermal wire spray !?!?

[@Zerocontroler]

This engine is just perfect!

[@michakrawczuk7922]

especially this timing chains and gears. Workshops love them!

[@TheBusinessMindset_]

​@@michakrawczuk7922lolololol

[@azthundercloud]

Have a 2014 TDI Q7. No issues.

[@benek4222]

we have the 2009 3.0TDi, No issues at all.

[@xCroTv]

we got 2003 tdi 657.000 km no issues:b

[@flyfishing1197]

have 1932 TDI no problems at all

[@APE029]

Hows it going now?

[@azthundercloud]

@@APE029 had to take it for an oil leak. it europe it is a recall but here it is if you spot the leak audi will fix it. they had to drop the engine. 3 weeks alter we get vehicle back, mmmmmm think they put oil back in? nope. ripped the dealer a new one. waiting for audi corporate to get back with me. that was the only issue we have had. still get outrageous milage on the highway with it. still looks like new inside and out.

[@fredixhavara]

Eny one knows about Diesel particular filters, light cam on.

[@bidfoul]

This is good.

[@bidfoul]

This is good

[@T3hD0gg]

You are correct except you mixed up the naming. The hot side is the turbine, while the cold side is the compressor.

[@Zerocontroler]

Audi for life!

[@MidShipCivic]

Interesting @3:27 '' two turbine wheels ? One Compressor and 1 turbine ... lol

[@andydelassus2734]

Ah yes, the ol’ emissions test *wink wink* .

[@lhansen6010]

The test was to make sure the emissions cheat program was working!! Wink 😉

[@alltogether9471]

Beautiful

[@AzIz-bt8xo]

👍👍👍👍👍😍😍

[@fenadespminasgerais9288]

NO MUNDO RODAM CARROS E "AUTOMÓVEIS" O AUDI É UM AUTOMÓVEL!!!

[@mazinais31]

atleast you're funnier than germans lol

[@1spocko]

You are correct!

[@SingleCabCrew]

Needs bigger turbo

[@Michael_Michaels]

4:21 OH THE SMELL OF DIESELGATE!!!

[@FPVForLife]

These engines weren't affected.

[@ville85]

@@FPVForLife these idiots allways seem to point out this dieselgate thing and forget that every single German manufacturer had same kind of 'cheat software' to reduce NOx output. The finger points at Continental AG, the company that made this dieselgate possible.

[@FPVForLife]

@@ville85 And nobody has the technical knowledge to understand why they did it. Yes of course corporate greed ect. is a big part. They should have used SCR since Euro 5. It is impossible to build a reliable and efficient engine with such high EGR flow. Just look at the cars that got the update, totally gunked up intakes and EGR valves even with low miles, a lot of smoke/ soot to be catched by the DPF, the oil is saturated with soot in no time, worse fuel mileage, weird and loud running ect. But the real root cause are these totally mindlessly set emissions standards by the EU. Now they even declared the thermal windows for engine protection to be be cheating devices. Everybody with half a mechanical brain understands, that engines can't run the same way in every imaginable circumstance. The EU: Naaahh we don't think so. Bam. Illegal. Total insanity.

[@azthundercloud]

My rear main seal went out at 70k miles. Pissed is putting it lightly. excellent milage, good build quailty on vehicle, but what else is going to go? Going back to Toyota.

[@sourdiesel985]

I miss my 2010 TDi but then I see titan XD with a Cummins and think, nom nom nom. but the overall mpg's tho...:(

[@shanet7511]

sour diesel Theres no logical reason to get that over a US built diesel. Its literally less truck for the same money.

[@wallcouldtalk]

Bummer the turbo sits at the rear or the engine. Seems all V-diesels are made the same way now.

[@75L48]

bummer you can actually change it without having to remove engine from car, I know.

[@llxROBxll]

Who else has worked on many of these

[@alouisschafer7212]

Those cutting edge piezo injectors were not so cutting edge since VW replaced them because of reliability issues

[@ville85]

Well, the Bosch injectors really weren't an issue with these older gen1 and gen2 3.0tdi engines. It was Siemens injectors that had those issues, especially in 2.0tdi engines.

[@alouisschafer7212]

@@ville85 really glad this stuff is being discovered and fixed because Injector failures on a Diesel are such a pain.

[@littleman9055]

Quality of german cars has gone down especially since the electrical system is made in Romania. Overworked staff shit quality

[@benek4222]

The engines are still great, but the electric, gone down, especially Mercedes, but VAG (VW, Audi, Bentley...) is still good at electric.

[@ThePucko97]

The engines are not great. Because plastic things in something that heats up and cools down as often as an engine is meant to fail.

[@jakyojaki966]

Lantos Daniel

[@kuwaitman]

You are right the problem are in the electrical parts. under stress they tend to fail. On the other hand this does not happen to japanies cars i guess japanies have mastered making electrical components. The germans are good in design and quality. Japanies are good in practicality and durability. I vote for the japanies

[@littleman9055]

i worked in one of their german companies in romania. They are like the chineese workers

[@azthundercloud]

Getting rid of my Q7 TDI. Rear main seal went out at 75k miles.

[@RealGX]

The engine is generally quite strong and only has a few minor issues. Major one being the timing chain.

[@TheRockisSmokin]

@@RealGX which year q7's have the timing chain issue ?

[@RealGX]

@@TheRockisSmokin 2007-2016. Its mostly cause by poor oil quality and infrequent service.

[@alouisschafer7212]

they seem to be acting up the most in the Q7... The engine itself is strong as fuck tuners got 400+ hp from stock blocks

[@azthundercloud]

@@alouisschafer7212 wasnt rear main like we thought. Gasket material was bad. Audi repaired under emissions warranty. Took 3 weeks to fix at dealer. Then ass wipe forgot to put oil back in. Damn near got in fist fight.

[@mxmaverick49]

seeing as the tdi operates at a very low temp, it doesnt matter really where the turbo goes. the turbo is still gonna get decently cold air. i agree that having the turbo in the front would be way easier to work with (seeing as my wastegate is stuck wtfo, itd be way easier to change if it were in the front) but id assume it has something to do with cost/materials. but fuck if i know, im not german

[@MidShipCivic]

No.

[@JeanV1986]

"Polute less", my ass! Maybe less CO2, but so much more other dangerous stuff, as dry fine particles.

[@dieselmutt8865]

Yes they pollute less. If they are left stock and not modified like the law requires for highway use, the air coming out of modern diesels is cleaner than the air going into them in a lot of major cities. The DFP (catalytic converter) eliminates all the dry fine particles you talk of (again...STOCK and LEGAL). Compare tailpipes on a newer diesel car vs newer gasoline car. You will see some sooting in the gas cars tailpipe but the diesel car will look clean inside. Maybe educate yourself some on a subject before making blanket, ignorant comments.

[@JeanV1986]

diesel mutt88 Your comment is ignorant. This is all theory, and what car manufacturers want you to believe to sell their stuff (and I see they succeeded). Here in Europe, the vast majority of vehicles are diesels, and it has been the case for two decades or more. Why? Because governments pushed customers towards buying those, with tax rebates. Certainly economical reasons. And recently, the World Health Organization has "started noticing" that there are many health problem linked with diesel engines, much more than petrol engines (at least those without direct fuel injection). We may thank the global CO2 bullshit. I see this every day: a big brand new Audi, Vw or BMW driving in front of me, and suddenly a huge cloud of black shit coming from the exhaust. There is no exception: if you push the pedal to the floor on a diesel, filter or not, you will get a cloud of smoke, sooner or later. And I don't even talk about the shitty EGR valve problems. Oh, and I guess you know that you can't see No2, probably the biggest pollutant coming from diesel engines. Time to get educated a bit.

[@dieselmutt8865]

I've been a diesel mechanic for years and I know how the emission systems work on these modern diesels so I am educated on what I talk about. If you are seeing brand new vehicles putting out clouds of smoke then there is either something wrong with the vehicle or they have been MODIFIED by the owner to not be stock. I live in the US and our emission standards manufacturers have to follow are a lot more stringent. Unfortunately here there isn't much accountability against owners modifying their vehicles after purchase. You can literally wipe your finger on the inside of the exhaust pipe from a modern diesel her (car to semi) and not have any residue on you finger from doing so, so there isn't ANY fine particle health hazards from our legal diesels here.

[@JeanV1986]

diesel mutt88 Honestly, I've seen a couple of those completely clean exhaust pipes on diesels, and I've been surprised, but it is a crying minority here. And the numbers are not lying: today, we are facing numerous health diseases due to diesel cars here in Europe. www.businessweek.com/articles/2014-06-05/london-leads-eu-in-car-pollution-diesel-fuel-blamed Diesel is "clean" only thank to very complex "tricks" and filters, but those have their limits, too. A modern petrol engine with indirect fuel injection is "naturally" much cleaner, I stand by this.

[@vivalaphill]

are you american?

[@BenDover-wu7ed]

I always feel really sorry for people that drive diesel cars...

[@chaitanyamallipudi]

Seriously... I do the same on patrol car owner

[@isa540]

@@chaitanyamallipudi the same here, Ben Dover should educate himself on Diesel before forming such negative opinion of Diesel engines.

[@garyhoffmann1615]

I feel sorry for people who bought petrol cars when there was a Diesel option, my Audi Diesel uses fuel like a small car and has more power than a V8.

[@alouisschafer7212]

I somewhat agree because well the list of things to go wrong on a diesel car is a lot longer than the one of a gasoline engine. Thats just a fact and not surprising when you have EGR, DPF, DEF on board and a complex fuel system operating at very high pressures. On top of that every modern diesel is turbocharged so you have a turbo to worry about too. Say what you want but a simple port injected NA gasoline engine has less parts to fail and is much easier to maintain. If you want a vehicle to keep forever get the most basic gasoline engine you can find. Yes I know modern gassers are direct injected and turbocharged but I would still prefer that over a diesel because the typical characteristics of diesels make them suboptimal engines for cars: Low redline, unpleasant sound, loud rough idle, more vibration and a pain in the ass in the cold. I dont hate diesels but I think they dont belong in cars. The small 3 or 4 cylinder diesels you get these days are just trash because they are gutless, loud and idle like an old tractor. If you move up in the food chain to the Audi V6 or BMWs new flagship 3.0 inline 6 diesel its a different story. BUT they only make sense in a heavy vehicle (above 1,5 ton) and when coupled to an Automatic. Can I recommend the 3.0 TDI V6? Yes. Its a decent engine in my opinion. Low vibration, relatively quiet for a diesel and so far a beast in terms of how much a stock block can take. Its VAGs best diesel.