2320 Question

[PCABE5]

Would be nice if John Deere or Yanmar would publish the brake specific hp charts for the motors. Then you could see the fuel consumption by rpm. I believe the stated fuel consumption is 1.6gal/hr at rated rpm (3000) with a 100% load. On a diesel there is usually a "sweet spot" for fuel consumption and you would need the chart to find what rpm that is and low rpm is not neccassary the best fuel consumption.

 

[Pushing_Tin]

Good replies, looks like we're running about 50-50 though!

 

[ChuckinNH]

Well, there are different responses because different folks like to work differently. One person wants the hydraulics as fast as possible, and quick hydro responses, and another would rather enjoy the day. In the JD specs Deere states the working range for the 2320 is :
Operating range 1270-3170

My guess is that you are OK either way.

 

[DreaminGreen]

Dang and I have'nt been over 2,200 rpm yet with my 3520. Generally 1,800 to 2000 is good for me. But I did only get to dig out one stump then the ground froze and moving snow you don't need a lot of power.

 

[2Malamutes]

... and low rpm is not neccassary the best fuel consumption.

Possible, but it is pretty certain that WOT is the worst fuel consumption.

 

[EdC]

Another reason that I like 2600-2800 rpm is that the tractor engine does not seem to be working hard but I can still get curl and lift at the same time. Lower rpm's and it seems to be either curl or lift but not both simultaneously. Helps me get into a flow and get more done. It's also more fun but darn it this is a serious tractor site.

Dreamin I think our 2320s turn a bit quicker than your 3520. No substitute for cubic inches.

 

[jcmseven]

The small indirect injected diesels such as this are designed to run at or near WOT. You may burn slightly more fuel, but will have less unspent fuel and better overall performance. I doubt one would significantly lengthen service life by running 500-1000 rpm slower. Although it sounds counterintuitive, the engine cools better and generates less engine heat at higher RPM. It also, as mentioned, more completely ignites the fuel, again creating less residual heat and fewer soot deposits. I suspect our OP would be better off, if he does not mind burning a little additional fuel, running the 2320 at WOT or pretty close to it. Our local college last year turned in a 5000+ hour 455 to our local JD dealership, which has a similar--though not exact--engine. I am pretty sure it was run at WOT (and then some) most of its life and although it looked rough it ran great and was purchased by another happy buyer. This is but one example to illustrate that these engines can take the RPM's

John M

 

[kvjohndeere]

run it like you rented it. actually a diesel engine is designed to be worked hard, it'll last longer by being worked than if you baby it all the time.

Amen Brother Run It Hard

 

[Pushing_Tin]

One thing I love about my tractor is the fuel consumption. I've only fueled it a couple of times since October! If it's fine for the engine to run WOT I'd rather have the 10% penalty in fuel economy in exchange for the increased power and responsiveness of the FEL.

 

[PCABE5]

Possible, but it is pretty certain that WOT is the worst fuel consumption.

Possibly. The engine was designed for a rated power output at 3000rpm. That being said power and economy should be at that rpm which it was operationally designed to operate at. Would be hard to believe the Japanese and JD had designed the tractor to be the least efficient at its rated rpm where only its load determines the FC and where it will see the most operational hours. Running it at 3000rpm is better and will do less harm than anyone letting a diesel idle for any lenght of time. Also, PTO isn't the only function on the tractor that is designed to operate at the rated rpm. Some think that 3000 rpm is the limit of this engine but it is JD's required limit as the same engine in other applications have over 3500+rpm ratings.