[Gasification] SFC for De-rated EnginesWas:smallscalegasifiers for those that need them

[gfwhell at aol.com]

Harmon.
You must admit ! you get a relative, bigger bang.
GF


-----Original Message-----
From: Harmon Seaver <hseaver at gmail.com>
To: Discussion of biomass pyrolysis and gasification <gasification at listserv.repp.org>
Sent: Sun, 1 Jul 2007 10:40 pm
Subject: Re: [Gasification] SFC for De-rated EnginesWas:smallscalegasifiers for those that need them



gfwhell at aol.com wrote:
> Crank case compression on large 4 stroke diesel engines is avoided as a safety 
measure, one of the ships I was on had fiber board panels installed on 
> both sides of the lower crank case. the crank case is normally aspirated to a 
negative pressure, to avoid destructive?explosions. when an explosion does 
occur, due to the ignition of hot oil mist being ignited within the crank case. 
the fiber boards blow out "fairly" harmlessly. much better than having cast iron 
shrapnel.
> On the other hand a greater danger exists with worn rings, because this can 
cause the engine to "run amok", Other than preventing air from being sucked into 
the upper combustion zone the engine can explode due to centrifugal force. 
getting all the fuel and air it needs from the crank case.This can be a very 
traumatic experience.
> 

   Even small diesels do that.


-- 
Harmon Seaver

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