Kioti RX6620 Regen light. How often?

[Sean2202]

Curious on what others might be seeing on the Regen light on their Kiotis. I have a RX6620 for use at my work. It has 122 hrs on it now. It is used around the shop and also running implements. Here Is my Regen history.

41 hrs, pushed bypass once.
83 light on REGEN performed
104 light on REGEN performed
122 light on REGEN performed

Is this normal?

Thanks for any input
Sean

 

[ptsg]

The frequency of regens is directly affected by how hard the tractor is used.

If it's doing light work, like loader work or just moving around, it will regen more often. If it's doing harder work that is lugging down the engine, like mowing some heavy and dense brush, it will regen less.

It's hard to say if that is normal or not because we don't really know how you use your tractor but I say that's probably right for moving around the shop.

The most important part is that it's starting the regen and completing the process on it's own, without popping errors or something like that.

 

[rademamj1]

Ptsg is 100% accurate. Regen cycles are very dependent on your personal operating habits. How you work your tractor. Short work periods at lower rpm often create lots more DPF soot, than a longer work period at higher rpm. My CK4010 runs right at about 27hours per regen cycle. I have noticed that bigger tractors tend to have longer regen cycles.

If you believe your regen cycles are too short, consider increasing rpm's for your tractor, which increases exhaust temperatures, which burn more soot up in the DPF.

 

[AWSubie]

My NX5010 has had 3 regens in about 400 hours.

 

[5030]

There is no normal. The only 'normal' thing is the total life of the element in the SCR unit. Not sure about that brand but Kubota states the total life of the element (before cleaning / replacement is 2500 regens. After that, the accumulated ash content in the cannister causes the ECM to derate then engine until the element is either cleaned or renewed.

 

[Sean2202]

Thanks for the input. I will monitor this going forward. I assume the emissions requirements are why some tractor trailer have stickers that say "do not idle." Also I figure generally speaking a hydro tractor runs at higher RPM than a Powershuttle so maybe that is contributing to the regen cycle more often. Either way I think running it at higher RPM may be the new thinking here for me.

 

[Midniteoyl]

Either way I think running it at higher RPM may be the new thinking here for me.

I try to run the throttle up to idle @ ~1500rpm and then engage linked pedal when tooling around or using the loader. Didn't take long to get use to.

 

[5030]

Myself, I find running a diesel at high RPM to be counter productive. If I wanted a high rpm engine, I'd have a gas motor. My Kubota's spend very little time running at higher rpm. No need to but then they aren't emissions engines either. Something I will never own.

 

[rademamj1]

Myself, I find running a diesel at high RPM to be counter productive. If I wanted a high rpm engine, I'd have a gas motor. My Kubota's spend very little time running at higher rpm. No need to but then they aren't emissions engines either. Something I will never own.

I know what you mean, but "high rpm" is relative. Running at 2500 rpm is considered excessive to my neighbor, but my PTO 540 is @2500 rpm. For those with emission systems, instead of driving back to the barn at 1500rpm, do it at 1900rpm, and your emission system will have less problems over time.

 

[rademamj1]

Myself, I find running a diesel at high RPM to be counter productive. If I wanted a high rpm engine, I'd have a gas motor. My Kubota's spend very little time running at higher rpm. No need to but then they aren't emissions engines either. Something I will never own.

I know what you mean, but "high rpm" is relative. Running at 2500 rpm is considered excessive to my neighbor, but my PTO 540 is @2500 rpm. For those with emission systems, instead of driving back to the barn at 1500rpm, do it at 1900rpm, and your emission system will have less problems over time.

 

[NCL4701]

There is no normal. The only 'normal' thing is the total life of the element in the SCR unit. Not sure about that brand but Kubota states the total life of the element (before cleaning / replacement is 2500 regens. After that, the accumulated ash content in the cannister causes the ECM to derate then engine until the element is either cleaned or renewed.

Wow. Never heard the 2500 figure before. So far my only Tier 4 is averaging 40 hours between regens so if it last 2500 regens x 40 hours = the engine and rest of the tractor will wear out way before the SCR needs attention. I hope that’s accurate.

 

[rademamj1]

Wow. Never heard the 2500 figure before. So far my only Tier 4 is averaging 40 hours between regens so if it last 2500 regens x 40 hours = the engine and rest of the tractor will wear out way before the SCR needs attention. I hope that’s accurate.

Most tractor DOC/DPF emissions systems appear to last between 2500-3000hrs before sufficient ash accumulates in the DPF requiring a manual regen. DO NOT throw away the DPF and buy a new one. They are extremely expensive.

Typically you remove the DPF and ship it to a diesel shop that specializes in a manual regen. They will first soak it in solvents, then power wash it, followed up by a 24 hour baking at very high temperatures, that effectively burn out the ash from your ceramic filters inside the DPF. After a final power washing, they ship the DPF back to you with a certificate indicating, for example they cleaned out 92% of the ash.

 

[MinnesotaEric]

I know what you mean, but "high rpm" is relative. Running at 2500 rpm is considered excessive to my neighbor, but my PTO 540 is @2500 rpm. For those with emission systems, instead of driving back to the barn at 1500rpm, do it at 1900rpm, and your emission system will have less problems over time.

In contrast up here in Minnesota where it is considerably cooler much of the year, my Kioti NX6010 with a warmer, 185 degree thermostat is regenerating about every 20-30 hours doing loader work.

 

[Oz_Kioti]

The manual for my non-Tier 4 RX8030 (excerpt below) is very specific regarding the importance of warm-up/cool-down periods.

But how do you guys with Tier 4 turbo-charged engines reconcile the requirement for extended warm-up times at low rpm, with increasing the frequency of regens? Or is that just "the cost of doing business"?

 

[MinnesotaEric]

The manual for my non-Tier 4 RX8030 (excerpt below) is very specific regarding the importance of warm-up/cool-down periods.

But how do you guys with Tier 4 turbo-charged engines reconcile the requirement for extended warm-up times at low rpm, with increasing the frequency of regens? Or is that just "the cost of doing business"?

View attachment 715118

I do it like this.

 

[Oz_Kioti]

Thank you Eric - great video. That's an education for me here at 27 degrees South (just south of the Tropic of Capricorn).

With summer on the way, all my tractor activities for the next 6 months (slashing/mowing, and spraying) will have the aircon cranked up to full cool!

 

[WRX]

The manual for my non-Tier 4 RX8030 (excerpt below) is very specific regarding the importance of warm-up/cool-down periods.

But how do you guys with Tier 4 turbo-charged engines reconcile the requirement for extended warm-up times at low rpm, with increasing the frequency of regens? Or is that just "the cost of doing business"?

View attachment 715118

That says if you don't warm up the engine after you start it you can damage it, and then the warning says if you do that, you'll damage the engine. Damned if you do and damned if you don't.

 

[5030]

My emissions systems have no issue because I have none.... I'm T3 all the way.