DPF

[Hersheyfarm]

Jcb has a dpf-less motor also.

 

[Turbys_1700]

Nothing majical at all. The lower HP tractors have less stringent emissions limits allowing egr valves, catalyst, and or dpf's. Kubot, Deere, and a few others decided to go the regen route. Who knows after 2-3 thousand hours which system is best. I just purchased a 1000 hour tier 3 New Holland t4.75 that only uses an egr valve. No issues with 1000 hours on the clock.

 

[MHarryE]

I'm not sure about Deere but Kubota builds same engine power ratings with and without DPF. There is no amazing technology nobody else has that allows Mahindra to sell a tractor without DPF. Kubota and Deere have both stated they opt to use the DPF versions in their tractors based on expectations. Burning soot requires higher heat so higher combustion temperatures will eliminate soot but it will create more NOX. Higher temps may affect engine life - but that can be compensated for by using more exotic materials. In my case my Kubota L6060 with DPF greatly outperforms the L5740 I had both in engine capability and reduced fuel consumption. A regeneration involves seeing the word Regenerating on my dash plus a light indicator. My last regen was 2 days ago cleaning up my yard, very low power re quirement, lists of shuttling back and forth. I've had larger DPF equipped tractors since 2013 with many regens and no problems. The engines cost more but maintenance costs are generally lower - example doubled or tripled oil change interval, virtually zero oil consumption as oil burning increases emissions. None of my DPF tractors have required adding oil between the 500 or 600 hour changes. I have not had one yet reach the 5000 hour mandatory minimum time before cleaning so I do not know how much that will be. Now that the EU is headed into Stage 5 what will the tractor company strategy be? Will they continue to build emissions compliant tractors common to EU, Japan and North America or will they make special EU tractors (DPF required)?

As for credits, they've been in place for every upgrade. A great deal of R&D is required for each change so to stagger the introductions companies have been allowed to sell non-compliant equipment for years after the deadline by producing cleaner than required engines for some machines and earning credits. They can also earn credits by implementing early on some machines. The emissions regs have also had flexibility over the years, depending on region, by engine build date vs tractor build date. They could stockpile up to a year's engines under the past stage and use them up in new tractors. Required that the engine build date meets deadline. We have one JD tractor on our farm bought new a year after Tier 4 final was in effect but meeting Tier 4 interim.

 

[FM504]

Several of the tractor brands have been able to build engines without the DPF and still meet emissions standards. The New Holland T4.75 I wanted to buy before I ended up with my Kubota was that way, using a "Particulate Matter Catalyst" instead of a DPF.

They must have had problems with that system, I have a 2016 t4.100 and it requires def.

 

[AllDodge]

Not positive because I have nothing which uses/used DEF, only ones that ReGen, but think I would like to use DEF over ReGen

 

[FM504]

I’ll be honest, I haven’t had any real problems at all with my tractor or skid steer that both use def, I think the key is running at a pretty high rpm to keep them hot...you def don’t want to let them idle all day long.

 

[AllDodge]

Guess I should also add, anything that ReGens also burns more fuel. Unable to understand how burning more fuel keeps the air cleaner

 

[Newby first timer]

Guess I should also add, anything that ReGens also burns more fuel. Unable to understand how burning more fuel keeps the air cleaner

My Thought Exactly
Just make more money for the fuel industry and Gooberment.

 

[MessickFarmEqu]

anyone who claims not to have a DPF has a DOC.. which is 90% the same. Its a DPF that does not burn. It meets its particular mater (PM) requirement by running the engine extra hot so the exhaust stream is cleaner. It also uses EGR (exhaust gas recirc) to reburn the exhaust, which DPF does not need to do.

kinda drives me nuts, as companies use the burn cycle to strike fear into those shopping with a tractor. I sell both styles of emissions system, we don't have more or less trouble with any certain type. Key thing is the operator understanding the system.

 

[Turbys_1700]

Messicks is correct...
Kubota, Deere, New Holland, most others, they have their system down...
I used a WM 50 for 2 years with zero issues...
Just bought a Tier 3 t4.75 with 1000 hours and an egr valve...
Really like it so far...