Regeneration Mode

[OrangeToys]

Any updates?

 

[OrangeToys]

Any updates? Or anybody found a way to take the stuff off?

 

[TheWedge]

I can provide a personal update. Last summer I purchased an L3301. I had my first regen at 20.1 hours which seemed a little soon (regen seemed to take an excessive amountof time - my opinion). Based on some of the literature I was reading, I decided to change my operational proceedures. The first change I made was to not oerate under 2K rpm for general tractor work. When using implements requiring the PTO I ran at the recommended PTO rpm. Additionally, at temperatures less than 32 F, I made sure the block heater was plugged in and on for at least an hour before startup (where I live we routinely drop below 0 F in the winter). The net result was my second regen occurred at 52.8 hours and lasted less than 10 minutes. I was working at the time and I was able to carry on as though nothing was happening (although you can feel the increase in the amount of heat being generated and there is a slightly different smell to the exhaust).

I know this a really small data set and need more regens to have a better indication as to the conditions that trigger more or fewer of them. My general observations (opinion) are that the sooner the engine can get to an optimal operating temperature, the more time between regens, and that a blockheater in cooler temps can improve on the duration between rengens.

Mike

 

[sandyc]

Don't know about taking the "stuff" off but found out today talking to the guys prepping my 3350 that Kubota had reworked/replaced the air intake horn. It used to run over the top of the rad and take air from just behind the grill. This past winter with all the snow we had, many of the air filters became plugged with ice which in turn caused the dpf to fail. They have now issued new air horns that draw air just by the top of the rad. Also, they have updated the dpf and some computer programming . Also, the first issue of the 3350 dpf required the op to push the auto button every time they started the machine. At some point that was changed so that the op just have to start it and it is already on auto. The current manual says to refrain from idling as the temps drop in the exhaust which causes more particles to form in the dpf. Hopefully I won't have too/any problems. Guess I am taking a chance that Kubota has got their act together. This will be my 6th tractor!

 

[sandyc]

As a follow up to my previous comments....I just took dely of my almost new 3350 and found that the sticker on the left back cab support says to push or turn on the "auto" regen button after starting the machine and work it as usual. The sticker goes on to note how to handle the various options to handle engine temp, parking regen and so forth. This contradicts the current manual so I am going to follow the sticker in the cab. We'll see what happens and how it goes. My first impression is that the 3350 has a bunch more fel hydro power. Guess the 7 horses make a difference. Of course, now that I have a cab it won't snow next winter!

 

[robert421960]

So I have a new L3301 tractor and had my first regen today at 21.7 hrs,it took about 11 minutes and I totally couldn't tell anything different except a different smell to the exhaust
I played trying to learn a little by seeing what others have said here
1 it did not rev up by itself,I was running at 2000 rpm already and was able to idle down
2 It did not lower the power of the tractor at all
This is just my evaluation of my first regen and it went flawless and just like my owners manual said it would
I have the same new tractors at home and at work so I look foward to seeing how it goes on my home tractor

 

[robert421960]

So I have a new L3301 tractor and had my first regen today at 21.7 hrs,it took about 11 minutes and I totally couldn't tell anything different except a different smell to the exhaust
I played trying to learn a little by seeing what others have said here
1 it did not rev up by itself,I was running at 2000 rpm already and was able to idle down
2 It did not lower the power of the tractor at all
This is just my evaluation of my first regen and it went flawless and just like my owners manual said it would
I have the same new tractors at home and at work so I look foward to seeing how it goes on my home tractor

 

[MHarryE]

I am not sure how the regen compares between a small and a large tractor but in the Nebraska Tractor Teśt of the M135GX it is reported that they measured a 3% power drop during active regen. In my experience I so not believe anyone could determine that small power loss without a dynamometer. It is too small to perceive. My tractor also makes a slightly different exhaust sound during regen. It isn't perceived as louder - just a little "crackle" in the exhaust note.

 

[scottfarm1]

I can feel the power drop on my L4701F and there is a different exhaust note.

 

[sandyc]

On my 3350 I don't really feel any change in power. The exhaust temperature is a lot hotter. At +5 it took almost 25 minutes even with the winter front on. Most of that time was getting up to temp.