What ideas would work and not destroy the engine in the process?
I know that if you could block the intake you could cut off the incoming air.
But what about a CO2 extinguisher or halon to displace the O2?
I know that the cold from both would be the best for a hot engine.
But as your looking at it you going to trash it anyway.


So anyone have any other ideas?


Sean

 

For me, jam it in 4th and dump the clutch...of coarse not gonna work on an auto.
Don't hear about too many run aways with the powerstrokes in general (not to say it doesn't or couldn't happen) but there are a few exciting YouTube vids out there of run away diesel's where chocking the intake seems to be the most effective and least damaging. Hearing a diesel scream at high rpm's makes me cringe!! Was quite the polar opposite to when I rode sports bikes buzzing down the street at 6000 just normal traffic.

 

It could be a big problem on some diesels!

The only sure way to stop a diesel (with an automatic trans) is to starve it of air.....quickly.

The best way would be to install an air "shut-off" of some sort.......and you'd want it in place before the runaway happens.

It's pretty hard to stop one once it's wound up to 5000 RPM! You really don't want to get too close when that happens in case the engine or turbo self destructs!!

 

Halon displaces the oxygen in a space, it does it very well and quicker than most people think. NEVER EVER release halon while you are in a confined space or even a semi confined space. YOU WILL DIE.

On vessels in the merchant marine we used halon systems a lot. The release mechanism is delibertly located outside of the space your going to release the halon in. Just to keep the unknowing from killing themselves.

Another caution never use a dry chemical or a combination fire extinguisher.
The dry powder will ruin the engine cylinder surfaces.

We had a deckhand used one on a 300KW Generator Set not only ruined the engine but it ate the insulation on the gen. windings and armatuer.

 

Yep, an air shutdown system is a common safety device for a diesel engine that could possibly be introduced to fuel-rich intake air by accident. On industrial equipment, it may be required in certain areas like refineries. Wire it to an automatic switch that trips at a certain RPM and give a manual activation switch to the driver and you're good.

Chalwyn-Categories
AMOT-Products-Air Intake Shutoff Valves
BD Power - Product: Positive Air Shutdown

 

A fire extinguisher would be the easiest for a 6.0 powerstroke. If the air cleaner were easier to remove in the heat of the moment, stuffing a coat into the intake works pretty good. I've had to do something similar with Deere equipment, but the air cleaner lid on those takes seconds to remove with no tools.

Josh

 

Yea lost a few coats in my time trying to smother industrial and marine diesels. LOL

 

What causes a runaway diesel engine?

 

Useually uncontrolable over fueling. Engine rpm exceeds design parremeters. In a diesel all that is needed is hot enough air to ignite the diesel or any combustible liguid. I have seen runaway diesels actually sucking up engine oil out of the base and run on that.

Had a Mack truck one day roll upside down in a ditch engine still ran for 10 minutes before I could get it to shut down. It was not even running away actually just running upside down.

 

Nothing beats a runaway Detroit diesel as it runs backwards. Gotta plug the exhaust to stop that runaway.

Josh

 

Yea buddy Detroits were infamouse for that, most runaways I saw were detroits. Bad Bad Juju

 

I'll never forget as a 5 year old seeing a Ford 9000 idling in the driveway as my dad and his buddy were chatting, the engine kinda burped and then exhaust smoke started coming out of the air cleaner. The guy laughed and was like "oh damn thing is running backwards again"

Can't beat the sound of a screamin' Detroit though.

Josh

 

What! Did you say something?? Too many years on deck listening to
screaming jimmys and whining hydraulics.

One boat I worked on had a CAT. Needed some work done and the mechanic
had me standing by the turbo with a dinner plate in case it ran away on him.

 

Never read about a 6.0 running away. If this is a problem, I would suggest putting a dash switch in the FICM power circuit. Kill the FICM power, motor stops.

Ed

 

Runaway has nothing to do with injectors. To stop a runaway you either plug the air intake or kill the oxygen with a fire extinguisher.

Josh