Gas Line

[NewToy]

My father- in -law was telling me of hitting a gas line with a dozer. The dozer got a sniff of that natural gas and it was off to the races. He said that thing was screaming like crazy and he couldn't get it shut off. He finally crossed it into some fresh air and things returned to normal. He said that was quite a ride.

John

 

[Egon]

That has happened more than once! /forums/images/graemlins/grin.gif

Most places now require positive air shutoff for diesel engines when operating in an environment that could contain combustible gasses.

Egon

 

[markct]

the only way to shutoff a diesel that has run away like that is by cutting the air flow to the engine, equipment working in areas where gas lines etc are present are often required to have a shutoff slidegate, much like an rv waste valve, in the intake line

 

[kubotaman68]

I had a 475 detroit runaway like that had to knock the fuel nozel off with a hammer emergency shutoff came off in my hand. un cool ! /forums/images/graemlins/mad.gif /forums/images/graemlins/ooo.gif

 

[NewToy]

I had never heard of anything like that before. Around here it's not uncommon for folks to have their own natural gas well. I wish I had one in the backyard.

John

 

[JSUnlimited]

One other way, is to discharge a dry chemical fire extinguisher into the intake. It's a last resort as the engine will be trashed after! /forums/images/graemlins/blush.gif

 

[markct]

</font><font color="blue" class="small">( I had a 475 detroit runaway like that had to knock the fuel nozel off with a hammer emergency shutoff came off in my hand. un cool !

)</font>

if the engine was running away from gas in the air, then cutting off the fuel supply by your method would have had no affect on it, the only way to stop it would be to block off the air intake, or as someone else said to shoot a fire extinguisher into the engine, altho i dont see why you would want to do that since it would probably cause engine damage

 

[Soundguy]

When our mechanic rebuilds a diesel, on it's first start he stands ready with a big choke plate if needed.. etc..

Soundguy

 

[Egon]

Usually when a diesel "Runs Away" from exlosive vapours in the air it's to late for the engine and operator! /forums/images/graemlins/frown.gif

Egon

 

[IslandTractor]

Wouldn't a compression release lever stop a runaway engine? I have one on my Yanmar marine diesel as it is the normal way to stop the engine. If so, why don't more tractors have the simple compression release systems?