Generic DPF filter delete.

[MinnesotaEric]

Continuing the discussion from a year ago about our DPF systems, since I cannot tinker with the ECU, I'm thinking about popping in a generic SK-09 DPF delete box in, yanking out the DPF and fabbing up a "test tube" and muffler to bridge the exhaust this coming spring.

https://sdsauto.com/downloads/Sk-09-DPF-emulator-en-sokr.pdf

I also see that an EU company is rewiring the ECU for the same result.

Kioti Tractors - deactivation of DPF and EGR is no longer a problem! / Chiptuning AGROTRONIC

 

[SSF556]

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[L47TLBwannabe]

So I have a CK3510 can the emissions on it be deleted when the time comes?

 

[pmsmechanic]

So...if I read the installation manual correctly the emulator can also be installed on a car. I'm interested.

 

[AWSubie]

Just thinking out loud here; but it makes me wonder if you could just drill out the particulate filter and run it like a straight through pipe, leaving the differential pressure sensor in place. it would never sense a differential pressure and therefore should not trigger a regen.

 

[1010]

Watching this too,, so ready to get that garbage off my tractor,

 

[s219]

Just thinking out loud here; but it makes me wonder if you could just drill out the particulate filter and run it like a straight through pipe, leaving the differential pressure sensor in place. it would never sense a differential pressure and therefore should not trigger a regen.

You would probably need to replace the filter with some equivalent orifice to mimic the standard "clean" pressure drop. I recall hearing that the systems will throw an error if the pressure drop is less than the normal range.

 

[MinnesotaEric]

Just thinking out loud here; but it makes me wonder if you could just drill out the particulate filter and run it like a straight through pipe, leaving the differential pressure sensor in place. it would never sense a differential pressure and therefore should not trigger a regen.

I originally thought that I could put in a zener diode with a fixed voltage of 0.75V onto the signal wire of the pressure diff sensor and then gut the DPF (I'd still need a muffler), but I suspect that would eventually put the computer into limp home mode because I think (but do not know) that the ECU expects to see that pressure difference increase over time and so the reference voltage would need to rise. If I'm right, then a simple zenor diode will not work and considering how inexpensive these eliminator boxes are may as well go that route. My concern is how to program them or trust their internal self-programming works good enough (see the PDF on my OP for those instructions).

 

[MinnesotaEric]

You would probably need to replace the filter with some equivalent orifice to mimic the standard "clean" pressure drop. I recall hearing that the systems will throw an error if the pressure drop is less than the normal range.

Without a DPF, the system needs a muffler, thereby adding some back-pressure. The Emulator I linked to modifies the two exhaust pressure sensors as well as the DPF's pressure differential sensor.

 

[MinnesotaEric]

So...if I read the installation manual correctly the emulator can also be installed on a car. I'm interested.

Yes, they're made for cars, but near as I can see, all of these systems work much the same. As such I'm asking myself why can't I adapt this to my happy little Kioti tractor?