Have we been doing it wrong? High rpm's bad when not needed?

[TractorNoob85]

Does a geared tractor put a more constant load on the engine vs an HST?

 

[5030]

All I can say is, I'm sure glad I don't have to deal with any of that.

I will say the only time I see smoke (soot emanate from either of my M9 turbo charged pre 4 diesels) is a little puff on cold start and if I'm working them hard like a full bale chamber or mowing tall hay at a fairly high ground speed. Other than that I se no visible 'particulates', aka: soot and I'd assume your post 4 units exhibit the same characteristics except the particulates get captured in the DPF or in the case of higher power diesels, burned by the oxidation catalyst, aka: DEF.

I will never own a post 4 diesel, ever.

 

[dkmc]

All I can say is, I'm sure glad I don't have to deal with any of that.

I will say the only time I see smoke (soot emanate from either of my M9 turbo charged pre 4 diesels) is a little puff on cold start and if I'm working them hard like a full bale chamber or mowing tall hay at a fairly high ground speed. Other than that I se no visible 'particulates', aka: soot and I'd assume your post 4 units exhibit the same characteristics except the particulates get captured in the DPF or in the case of higher power diesels, burned by the oxidation catalyst, aka: DEF.

I will never own a post 4 diesel, ever.

Ya beat me to it. I am also glad I do not own anything DEF and never probably will.

 

[Beaver Cove Deere]

I purposely bought a used machine to stay away from any exhaust treatments.
I will however tell you straight up that long warm up time idling in the dead of winter showed up as fuel dilution in my engine oil analysis report. I don’t run much below 1500 and mostly around 2000 depending on task.

 

[RickeyVenus]

Hey guys,
According to this video and John Deer, we should not be using high rpm's on our tractors IF it is not needed. Supposedly people saying it is better for the emissions controls or DOC filters etc. have it backwards. Watch part or all of this video, check out what Deer says and let me know your thoughts?

Yeah thats why my soot is at 78% every other day I sat at 1900- 2000 rpm on my 4044r. I dont know that john deere knows how most people use them.

 

[edrobyn]

Does any of this apply to older diesels that don’t have the smog crap on them?

 

[MarkMac]

I have a 25 hp Kioti, with no emissions equipment.

I typically do non-PTO chores at 1500-1600 RPM. That is where the engine makes max torque and the power output is generally all I need.

My only other diesel is a 2018 Ram with intact emissions equipment. It typically sits in the garage 6 days a week and tows a tritoon or a 3-horse trailer on the 7th day, usually 100 miles round trip on the freeway. I just drive it smoothly and set the cruise control a lot. Freeway speed has the truck at 1600-1700 RPM. I’ve never even witnessed a regen. It manages all the emissions stuff silently in the background.

I’d feel cringy keeping my pickup tach redlined with a minimal (or no) load like some folks do to their tractors.

 

[Sprinkler Fitter]

Ya beat me to it. I am also glad I do not own anything DEF and never probably will.

My tractor does not use DEF but does regen

 

[Dunno]

Let me check what the manual for my 1964 Ford 4000 says about this and I’ll get right back to ya’.

 

[Hermio]

Hey guys,
According to this video and John Deer, we should not be using high rpm's on our tractors IF it is not needed. Supposedly people saying it is better for the emissions controls or DOC filters etc. have it backwards. Watch part or all of this video, check out what Deer says and let me know your thoughts?

I don't know about the pollution control, but the engine itself will last longer if you only run it as fast as needed. The only uses that require full throttle are things such as mowing and rototilling. My tractor does not have a DPF, so I don't have to worry about that.