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| It dun blowd up reel gud (Page 1/2) |
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Patrick
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NOV 05, 01:22 AM
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If you wish to bypass the build-up to the blow-up, start watching at 3:17
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maryjane
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NOV 05, 07:33 AM
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I've seen lots worse diesel engine explosions.
It sure didn't take that driver long to exit the vehicle tho.
"What steps do you take when a diesel engine runs away?"
Pointing to the ladderway leading out of the engineroom.. "Those..2 at a time"
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2.5
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NOV 05, 09:57 AM
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Seems like he intended to make it go boom, just going for it after that sputter.
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maryjane
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NOV 05, 11:26 AM
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| quote | Originally posted by 2.5:
Seems like he intended to make it go boom, just going for it after that sputter. |
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It may be that the 'going for it' was unintentional and if so, destruction was unavoidable.
If a diesel engine's intake, especially one under load that has plenty of heat built up, ever gets a fresh unmetered source of fuel (such as lubricating oil) the only way to shut it down is starve it for air, but not all air dampers can hold up to a runaway engine's intake vacuum.
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2.5
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NOV 05, 11:31 AM
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| quote | Originally posted by maryjane:
It may be that the 'going for it' was unintentional and if so, destruction was unavoidable.
If a diesel engine's intake, especially one under load that has plenty of heat built up, ever gets a fresh unmetered source of fuel (such as lubricating oil) the only way to shut it down is starve it for air, but not all air dampers can hold up to a runaway engine's intake vacuum.
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I wonder if thats what happened, seemed like a dyno run where you rev up at the end.
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maryjane
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NOV 05, 11:38 AM
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| quote | Originally posted by 2.5:
I wonder if thats what happened, seemed like a dyno run where you rev up at the end. |
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I initially thought maybe the load dumped off suddenly and caused it to go into overspeed condition. IE, part of the drive train failed.
I once saw an L1616 Wakeshau come from together when the governor failed.
It could be just about anything I suppose.
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MidEngineManiac
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NOV 05, 12:01 PM
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cvxjet
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NOV 05, 12:13 PM
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That was impressive- especially how fast the "Driver" got outta there (I may have moved quicker but needed new shorts)
Can I ask, what exactly caused the explosion? I admit I don't deal with Diesels or turbos so it seems overly impressive for a non Nitromethane engine (Saw a drag boat explode once- approx' the same thing although more....dramatic....since the boat was traveling at 150 at time of....Boom)
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Patrick
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NOV 05, 02:22 PM
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| quote | Originally posted by maryjane:
It sure didn't take that driver long to exit the vehicle tho.
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| quote | Originally posted by cvxjet:
That was impressive- especially how fast the "Driver" got outta there
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The "passenger" certainly had a rough exit. When he bailed out, he fell and mashed his face into the guard railing which surrounded the platform. Ouch!
Best way to watch parts of this video is full-screen on a monitor at 25% speed... not only for the explosion, but to see how different people react in the middle of chaos.
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maryjane
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NOV 05, 03:15 PM
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| quote | Originally posted by cvxjet:
That was impressive- especially how fast the "Driver" got outta there (I may have moved quicker but needed new shorts)
Can I ask, what exactly caused the explosion? I admit I don't deal with Diesels or turbos so it seems overly impressive for a non Nitromethane engine (Saw a drag boat explode once- approx' the same thing although more....dramatic....since the boat was traveling at 150 at time of....Boom) |
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Difficult to say. Watching it closely, the engine comes completely out of the engine bay, still running at 4:35. It settles back down into the truck about 1 second later, unattached but still running and is wallerin (that's a real word where I live) around in the engine compartment so much the whole front end of the truck is shaking. The engine, after settling back into the truck, is still running a a much lower rpm at 4:40 as they are using the fire extinguishers.
May be an air/oil explosion that threw the engine out and not a catastrophic engine disassembly, tho it is possible a disaster on the bottom end could have resulted in the oil/air explosion.
Notice there are no flames yet, except just a bit of orange under the truck.
You can see the engine up above the engine bay in this picture:
The absence of large pieces of engine shrapnel (pistons and cylinder heads) flying about leads me to believe it was a bottom end failure. I'm not even convinced anything came thru the side of the block.
I have seen a piston ejected with such force, that it tore the cylinder head off and both were hurled from the engine block. (on bigger diesels, each cylinder has it's own cylinder head)[This message has been edited by maryjane (edited 11-05-2020).]
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