Off topic about a Semi tractor turbo and blown motor

[PoorMansCat]

Not really a big deal... Typically, the engine is going to throw the valvetrain apart first.. Usually bends the valves over where the cylinder will no longer build enough compression to support combustion and the engine shuts itself down.
Of course the engine is pretty much done.

 

[PoorMansCat]

That's part of what destroyed Deepwater Horizon. The diesel generators sucked gas escaping from the well head. I remember reading that in the survivors accounts.

The generator room may have been a source of ignition, but the generators most likely had positive ASO systems on them. Its pretty much required everywhere there is a possibility of an explosive air environment.
The generators typically run at 1200RPM, if the engine reaches 1300RPM, the ECM disables the injection system and the ASO's trip and close off all airflow to the inlet side of the engines. These systems are suppose to be fully tested every 500 hours of run time.

 

[sandman2234]

Well, you guys are making me feel a little better, but in reality, had I even thought that it might have run away from eating engine oil, I would have shut it down and pulled it to the shop with a chain. (straight shot up the road to the shop fom where I stopped). They could have sent a wrecker after it to take it to the shop. Work hasn't mentioned the truck at all, not a word. Don't ask, don't tell is the way I am playing it till my dispatcher gets back and can fill me in on what the mechanics find (like I already don't know that answer)
David from jax

 

[Renze]

I don't know exactly what type of transmission the original poster has. All the 'automatic' transmissions I've worked on in semi trucks are not the same thing you will find in a car or even a pickup truck. They're automatically shifted manual transmissions.

I know that type. When referred to automatic truck transmission, we mean Allison TT series, Twin disk, ZF ecomat or Renk Dormomat transmissions on this side of the pond.
When referred to automated, or robotised systems we are talking ZF AS-tronic or Mercedes powershift. (which it isnt, it just takes down power on its own during shifting)

Even intentionally stalling one of these automated transmissions is hard, as most will automatically slip the clutch, or prevent manual override when that will lead to an engine stall.

 

[sandman2234]

I am pretty sure the transmission is an automatically shifted manual transmission, with a clutch. The computer pretty much handles the shifting once you get it rolling. However they are finicky about going into gear, ie a lapse in time, waiting on something, such as the gear mesh, rpm, left foot position, phase of the moon, etc.
David from jax

 

[Renze]

I am pretty sure the transmission is an automatically shifted manual transmission, with a clutch. The computer pretty much handles the shifting once you get it rolling. However they are finicky about going into gear, ie a lapse in time, waiting on something, such as the gear mesh, rpm, left foot position, phase of the moon, etc.
David from jax

At my previous employer i once put a MAN 12.240 TGL into the workshop (we made a superstructure on it for three cars, its a 12 ton 240hp medium truck) which insisted in taking off in 3rd gear when it noticed there was hardly any air in the rear axle suspension. Thats really a pain in the *** to manoever on close quarters, as it will slip the clutch when you baby the accelerator, and when you put it to the floor, it kept the engine at 1200rpm untill it could release the clutch fully and you'd be driving too fast around the shop...

 

[Taylortractornut]

David Ive had a few runaways operating equipment over the years. The first one I had experience with as a 10 year old kid dad had an old B414 IH tractor. It had an oil bath breather on it. Dad didnt know that it was the wrong one it had a scribed line where oil went. But he didnt know it. THe went by the stamped line. WHen he fired it up it took off like a rocket lol. sucked the oil bath dry to.

THe most run aways I had was with Rammax compactors. They used Hatz diesel motors. These remote controled trench compactors did great in narrow trenches but the company was runnin them on backfill in a larger trench and near a building. They often rolled over on their sides in the wide trenches.

I had a young laborer that got hired on and I had to keep on him about not checking the oil in the small equipment. One day he was running a Rammax and it started blowing smoke and running way. I was on the other side of the building site running a crane when I saw a straight pillar of smoke shooting up. I hopped on my backhoe and ran around the building. I kept some tennis balls with my to stick in the intake pipes on thses units. It was for when they rolled over. THis one was still on its wheels though. Wen it was finally choked down Jazzmine was telling me that before I started about the oil not being checked was that he filled his up this morning.


I saw oil comming out of the oil check on the side. I asked where he had checked the oil at and he said on top like moms lawn mower. I pulled the valve cover oilfill and saw oil pooled on top of the rocker arms. He saw oil written on top and thought that was where it was supposed to be at. I guess not paying attention during training was part of that.

 

[5030]

First off, the 'red motor' is an ISX C Cummins.

Secondly, it's air to air, charge air cooled, not intercooled.

Thirdly, the seal on the cold side of the turbocharger failed, allowing oil to enter the air-to-air cooler in front of the radiator,

When the ata unit filled with oil and the oil reached the return air outlet, the engine started sucking oil with the charge air and it ran away, not on fuel but lube oil.

Nothing to do but let it self destruct. Usually the overhead fails first, they drop a valve or break the valve bridge casting...

If you had done a proper pre-trip inspection instead of being a steering wheel holder, you'd have caught either the low oil level, the wetness around the coupling boot on the intake side of the turbo or blue smoke coming from the stack.

Drivers like you insure that I have lots of work.....

 

[Don87]

First off, the 'red motor' is an ISX C Cummins.

Secondly, it's air to air, charge air cooled, not intercooled.

Thirdly, the seal on the cold side of the turbocharger failed, allowing oil to enter the air-to-air cooler in front of the radiator,

When the ata unit filled with oil and the oil reached the return air outlet, the engine started sucking oil with the charge air and it ran away, not on fuel but lube oil.

Nothing to do but let it self destruct. Usually the overhead fails first, they drop a valve or break the valve bridge casting...

If you had done a proper pre-trip inspection instead of being a steering wheel holder, you'd have caught either the low oil level, the wetness around the coupling boot on the intake side of the turbo or blue smoke coming from the stack.

Drivers like you insure that I have lots of work.....

Pretty good attack on the OP.

Now since you've shown your butt..........maybe you should read the first post again.

The situation arose "after" he left the terminal. Which would be after a pretrip.

Got a half mile down the street and heard a pop

 

[Reg]

First off, the 'red motor' is an ISX C Cummins.

Secondly, it's air to air, charge air cooled, not intercooled.

Thirdly, the seal on the cold side of the turbocharger failed, allowing oil to enter the air-to-air cooler in front of the radiator,

Drivers like you insure that I have lots of work.....

Fourthly; It is "Ensure" not "Insure".

As long as we're pickin' nits we might as well get the smallest ones we can (-: