DPF reinigen?

matthiasTDI96 wrote:

Some time ago, I cleaned the DPF on a Sharan 7N.

How did you perform the cleaning, and with what product? Did you use the DPF cleaner from Tunap?

VG
Andreas.

vag-driver wrote:

How, or with what, did you perform the cleaning? With the DPF cleaner from Tunap? VG Andreas

Unfortunately, many DPF drivers simply don't understand the difference between ash and soot. It's really sad. They should really try grilling or turning on Grandma's oven and emptying the ash container.

ASH CAN NO LONGER BE BURNED!

Ash cannot be dissolved in "air" by any means, unless the substance used is so aggressive that it also dissolves the DPF itself!

First, I wanted to complain about Tunap, but after reading more carefully, it's clear that at no point is it promised to verschandeln a DPF filled with ash, but only to remove soot.

EVERY substance that is added can only help to burn off the soot.

However, it usually solves exactly ZERO problems, because...
- A DPF that is so full that the engine control unit refuses to initiate a regeneration cycle should be REMOVED for the sake of the vehicle. If there is so much soot inside that there is a risk of damaging the DPF or causing a fire during combustion, it should be REMOVED.
- or so much ash is in it that a pre-burn wouldn't really achieve anything?

The soot is anyway burned off during every passive or active regeneration process, so what's the point of unscrewing the DPF and pouring something into it, when it will achieve exactly the same thing as what the engine control unit triggers every x kilometers anyway?

See also specialized articles on DPF cleaning.

Best regards, Rainer.

Hello Rainer,

I hope you weren't referring to me. Since I heat with wood, I am very well aware of the difference between ash and soot .


"Since I'm not clear on what exactly is involved in this so-called manual DPF cleaning, I'm asking. As you already mentioned, the cleaning is supposedly already handled automatically by the system. Therefore, all you should need to do is empty the ash container and reinstall it, assuming nothing is broken. However, no one actually writes that."


VG
Andreas.

Hi,

Quote:

I hope you weren't talking about me. Since I heat with wood, I am very well aware of the difference between ash and soot icon_cool.gif

No, the statement was general. You wouldn't believe how many (a lot of) people actually believe the described nonsense. It's like if I poured magic water into my trash can and then it's empty. But they just don't understand that.

Best regards, Rainer.

Hello Andreas,

You've got it exactly right.
Once the burning process is complete and as much soot as possible has been converted to ash, the only remaining option is to manually empty the DPF. This means removing it and pouring out the contents, or rinsing it from the back with water. Afterwards, either blow it dry with compressed air or dry it in the oven, stand it upright and let it drip for 1 day, if the woman isn't watching.
Have fun!

Hufe wrote:

Hello Andreas, or let them dry in the oven, if the woman isn't watching. Have fun,

Sure. And every time the woman cooks food in the oven from now on, the man can't shake the secret thought that there's an old Russian filter on his plate. Lasagna with a "satcen" topping. Or a casserole in a "eolys" sauce, sprinkled with the finest, rusty-red powder. Some people might find this incredibly funny, but it's far from it.
There are also filter systems that operate with additives. These residues are incredibly healthy and are definitely best disposed of in a household oven.
However, residuals from additive-free systems have no place there either!
Especially when food for the children is also being prepared there.

Think about what you're sharing here! If someone reads this who doesn't know anything about Russfilt and a burning check engine light (and there are many people like that), they could easily read your ideas and steal them.

Forced regeneration. Disassemble. Use cold, clear water against the exhaust direction. Let it dry. I haven't used any household appliances. Time is your friend, at least initially... Everyone should dry it in the way that suits them best. One day in the sun is the most environmentally friendly option.
There are no additives required for any of the current VAG diesel engines. AdBlue does not come into contact with the DPF (Diesel Particulate Filter).
However, it also has the sheer problem of size. I don't know your kitchens, though. But as I said, everyone to their own taste (with a pun intended at this point).

But, as Rainer already mentioned, before you start taking things apart, invest time in understanding the process. Carbon atoms oxidize into CO and CO2... unfortunately, the combustion process in our engines isn't ideal in terms of gas exchange, so some of the diesel fuel doesn't fully oxidize and instead tends to form solid particles. This results in the formation of soot, which is undesirable but unavoidable. We'll leave the "why" and "how" aside for now. The soot is then captured by the DPF (Diesel Particulate Filter).

"And the soot burns," everyone in the countryside has probably seen it at least once, when instead of the chimney sweep, the fire department is on the roof extinguishing a chimney fire. In that case, the soot burns freely, although in old man Werner's case, the air circulation is terrible, which causes a lot of smoke, which is why the fire department is called in the first place. This is a good example because if there's too much water in there too early, it's a complete disaster. If no one adds water, it will eventually get too hot. Then the amount of soot is reduced, but the chimney itself is no longer in the best condition.
The DPF works in a similar way, but thankfully, its surface area is better than that of a chimney.

Before cleaning, make sure your brain is working properly, and don't use any miracle products. The old-fashioned method of using fire is the best, and it's free (....). Afterwards, you just need to remove the ash. This can also be done with compressed air, but I would advise against it for various reasons.

The large amount of ash is what explains the size of the DPF.

Hello everyone!

Just a quick question to make sure I understand, without wanting to cause any trouble:

Why do you absolutely insist on installing the DPF completely dry?
With every combustion, (a lot of!) water is produced, especially during the cold start and warm-up phases .
If the DPF were water-soluble, then... yes.

I must say that I haven't cleaned any DPFs before, but I have "modified" some (now the GTI-TDI *insider* will laugh).

Best regards from Munich!

As I mentioned... it just needs a little time and maybe some sun. Bone-dry isn't necessary... but I still think the idea of using an oven is kind of cute, somehow.

Dear children,

Of course, the thing about the oven was a joke! Please don't take it seriously!
Sorry if I caused any confusion .