does stalling out hurt your tractor

[patrick_g]

Stalling the engine is a lot bigger problem for engines with turbochargers. if you stall it and the turbo is spinning at any kind of speed, you have stopped the flow of oil to the bearings. Can lead to a bad day for the wallet. With my diesel turbo engines, I always try to let them idle, even if for only a short time, to let the speed come down on the turbo and the exhaust gas temps come down as well.

Engine RPM does not translate linearly or simply to turbo RPM or temperature. You are not likely to be auguring at such a high power level as to spin up/heat up the turbo much.

Higher RPM like for clearing the debris from the hole but not actually digging into the undisturbed dirt does not cause the engine to put out much power and the turbo gets little action. Besides I believe the stalling problem is at lower RPM while digging.

If however, you have an arrangement that allows you to (and you do) work your auger THAT HARD then the stored heat in the turbo impeller, shaft, and to a degree the bearings, can fry the oil in the turbo's bearings if you stall or otherwise stop the engine without a cool down period. This is because, when running, the oil flow through the turbo bearings carries away the excess heat.

One of the worst things you can do to a turbo diesel as an operator is to work it hard and shut it down with no cool down period as you literally FRY the oil in the turbo bearings. This leads to premature bearing failure.

Some engines have an oil spray directed at the interior of the pistons to help cool them. A hard run and premature shutdown can let those temps get out of limits too frying the oil in places like the ring grooves.

Pat

 

[Soundguy]

Yep.. coking I believe it is called.. ( oil in the turbo bearings ).. etc.

soundguy

 

[Eagleview]

Stalling or shutting down of non turbo engines without a short idle time can cause carbon deposits to form on the hot injector nozzles and create problems . Restarting a stalled turbo or non turbo engine quickly prevents any problems even if the engine has been working hard . Even with my non turbo machinery , after i park it , i get off , take off my ear muffs , have a look around the machine for problems and then shut it off which gives it a little time to "normalize" which stops carbon forming on the injector tips and stops exhaust manifolds from cracking . Its a good preventitive measure to get into the habbit of doing and takes no time at all .

 

[patrick_g]

The rusty pony got it dead right. It is good practice to never shut down an ICE after working it hard until it has a chance to cool down a bit.

I have an EGT (Exhaust Gas Temperature) pyrometer on my Dodge turbo diesel. I don't shut down until it falls below 400F to about 350 degrees (F). With hot weather after a high speed cruise or pulling a hill or whatever it seems to take forever sometimes (actually just a few minutes) but it is a good practice. If you don't have a pyro you don't really know what is happening. Water/radiator temp just doesn't do the deed. A pyro is an excellent tool.

You can't control what you can't measure.

Pat

 

[Eagleview]

Ive been de-rated

 

[Soundguy]

I get called 'soundboy' all the time... makes me feel like a saturday morning cartoon sidekick..

soundguy

 

[Egon]

Ive been de-rated

You have succumbed to the Laws Of Thermodynamics. It happens to all of us!

 

[Window Geek]

You have succumbed to the Laws Of Thermodynamics. It happens to all of us!

So Egon, I'm not getting older, I'm just yielding to the Laws of Thermodynamics. Somehow I feel better about that!

 

[Rara Avis]

Ive been de-rated

You're fine, as long as you haven't be DE-VALUED...

 

[patrick_g]

So Egon, I'm not getting older, I'm just yielding to the Laws of Thermodynamics. Somehow I feel better about that!

Entropy sounds so much more erudite than naming your actual frailties.

Pat