Common rail diesel motor

Mitch Furness · Nov 19, 2008

A feedlot operator told me today that he has dropped his fuel consumption on his feed mixing wagon by replacing the older tractor with a new New Holland tractor with a common rail motor. Fuel consumption on old machine was 17litres/hour down to 8litres/hr on common rail motor. Not sure what old tractor was but it didn't have the new design motor.

Any of you guys have similar savings with the newer motors?

Mitch

buickanddeere · Nov 19, 2008

Can you get back to the source and verify the numbers?
I"ve seen people calculate fuel consumption from the machine"s fuel gauge.Rather than actually measuring the fuel pumped into the tank.

JDemaris · Nov 19, 2008

Common-rail injection does not give anywhere near that kind of increase in efficiency. In some cases and uses, hardly any at all. If that guy got such huge gains, they were based on other factors.

RodinNS · Nov 19, 2008

That sounds about par for the course. It wouldn't have to be a common rail engine, but newer engines are generaly better on fuel and electronic engines generally have better torque curves that allow lower speed operation, thus saving fuel.
It's also possible that your friend went from using a 140 hp tractor that wasn't working hard to using an 80 hp. That in itself could account for the fuel savings... Big tractors loafing along on light loads are not particularly fuel efficient. Some are downright nasty.

Rod

Anonymous-0 · Nov 19, 2008

THE BEST WE CAN VERIFY ON THE LARGER KUBOTAS IS SOMEWHERE AROUND A 8% SAVINGS. WE HAVE CHECKED SEVERAL SIDE BY SIDE DOING LIKE CHORES OR RUNNING ON DINO FOR GIVEN PERIOD AT 80% LOAD AND EITHER WAY AROUND A 8% REDUCTION IN THE AMOUNT OF FUEL USED.

Mitch Furness · Nov 19, 2008

I will talk to the guy again to verify. He may well have been using a bigger tractor and replaced with a lower hp one. I did not think they were that efficient.

Ken Macfarlane · Nov 19, 2008

Most of the Kubotas gains I thought were from going from indirect injection to a semi direct injection type pre combustion chamber?

Glen D Anderson · Nov 19, 2008

Depending on the manufacturer, later generation common rail systems can provide a substantial improvement in economomy over earlier style fuel systems..............BUT not to the extent of 17L/hr VS 8L/hr...................as jdemaris mentioned, there must be other factors in that equation. Apples are being compared to oranges!

MN Scott · Nov 19, 2008

I replaced my 90 hp CaseIH 5230 Maxxum mechanical fuel pump loader tractor last fall with a 100HP Deere 7130 common rail tractor. The Deere is about 2500 lbs heavyer but I'am very disapointed in the fuel ecomomy. Pulling my NH discbine the Deere burns 35% more fuel to cut the same acreage. Doing loader work its about the same, it just plain sucks fuel. The dealer says everything is fine with the computer. Its a nice tractor but sometimes I wish I had the Maxxum back. It sure was cheaper to keep fuel in!

Common rail diesel motor

Mitch Furness

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buickanddeere

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JDemaris

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RodinNS

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Anonymous-0

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Mitch Furness

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Ken Macfarlane

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Glen D Anderson

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MN Scott

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