DPF regeneration alternatives

[Diesel_Dave]

Originally Posted by Phantom

Electric
If the temp that is needed is only 500F that would be easy as standard ovens reach 450F. With the use of insulation and induction plates from a stove heat could be directly applied to the DFP.

I was way off on the temperature requirement. It's over 500 deg Celsius. DPF manufaturer Johnson Mathhey quotes 600 C (1,100 F) here:
Johnson Matthey Catalysts - Emission Control Technologies - Active DPF Regeneration

But even if it was, 500 F, there's a big difference between slowly heating a confined oven up to 500 F and heating a stream of exhaust gas to 500 F.

[euromodder]

Originally Posted by oil pan 4

Want your regens to not burn any diesel fuel?
Buy a delete kit.

Unfortunately, it's 750 euro to physically remove the DPF and erase the lines of programming in the ECU.

That's over 500 liters of diesel at our prices
Which is about 40% of what I use in a year.

There are no kits, and it's not legal either.
Chances are high the car will fail its yearly tech inspection as well, so I could only run it for one more year - if nothing else fails dramatically.

[euromodder]

Originally Posted by Diesel_Dave

I was way off on the temperature requirement. It's over 500 deg Celsius. DPF manufaturer Johnson Mathhey quotes 600 C (1,100 F) here:

That's why my car uses an ureum fluid containing Cerium - it catalyzes the process so it happens at 350° C rather than 600° C.

[oil pan 4]

In the states we can do that.
Other places where the government is allowed to micromanage peoples vehicles, not so much.

[Diesel_Dave]

Originally Posted by oil pan 4

In the states we can do that.
Other places where the government is allowed to micromanage peoples vehicles, not so much.

Actually it IS illegal here, too...it's just easy to get away with it in many places. Of course, it's technically illegal to modify your vehicle in any way that might negatively affect the emissions--even if it's something as simple as changing the igntition timing or modifying the intake.

[LocoJason]

Knowing a thing or two about DPF from an OEM perspective, I figured I would add to this...

Simply put: As was said, you won't be able to reach lightoff temp with electricity. Well, maybe on a 480v high amp industrial supply, but not too many people have one.

DPF regeneration dosing is a carefully calculated and metered injection of fuel over a period of time to allow slow, even heating and hence a small delta temp within the ceramic matrix. If you were to try to use another fuel and/or injection system for DPF regeneration, I would give you a 90% chance of cracking and ruining the DPF in short order.

[oil pan 4]

Clearly the only answer is to gut the DPF.

[euromodder]

Originally Posted by LocoJason

DPF regeneration dosing is a carefully calculated and metered injection of fuel over a period of time to allow slow, even heating and hence a small delta temp within the ceramic matrix. If you were to try to use another fuel and/or injection system for DPF regeneration, I would give you a 90% chance of cracking and ruining the DPF in short order.

The sort of issues I'm having with mine - frequent, continued regenerations taking 20 or more miles, up to a staggering 50 miles - apparently is also killing the ceramic matrix of the DPF

Shutting down during regeneration, also turns on the rad fan @ full blast for up to 10 minutes.
Opening the hood, the heat radiation is massive.

[LocoJason]

Originally Posted by euromodder

The sort of issues I'm having with mine - frequent, continued regenerations taking 20 or more miles, up to a staggering 50 miles - apparently is also killing the ceramic matrix of the DPF

Shutting down during regeneration, also turns on the rad fan @ full blast for up to 10 minutes.
Opening the hood, the heat radiation is massive.

I have no idea what type of system your vehicle uses, however if regens are taking that long I would want to believe there is something wrong. Often times they use a delta pressure sensor to determine soot loading. If the pressure sensor has gone bad, it may be the cause of your frequent/extended regens.

[Diesel_Dave]

I think I recall my regens taking 10-15 miles out on the interstate.