Wierd application, hypothetical question.

[Shannen Durphey]

I've seenum diesel truck engine start in reverse, inna Autocar.  That
one was shut down quickly, no damage.  But they can end up burning the
oil in the crankcase, and there's little hope for 'em when that happens.
Shannen

Bruce Plecan wrote:
> 
> Most notibly diesels, can go into a run away state,
> What can happen is the fuel cools some metering down til it ices, and then
> goes very rich.  With no butterfly to close, and the metering *locked* at
> WOT.  The revs can soar..........
> You'll know it when you hear it.  Or at a tractor pull see the people run.
> 
> On a gas engine, without enough return spring if the linkage breaks (and
> there is enough air flow to keep the butterflies open), again that would be
> a runaway.  Nowadays, the shafts are sometimes off set, or the butterfly
> opening set just off of center, so that is about impossible to happen.
> 
> Probably other conditions
> Bruce
> 
> > Excuse my ignorance, but what is a 'runaway'?
> >
> >
>
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