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

Harmon Seaver hseaver at gmail.com
Sun Jul 1 22:44:03 EDT 2007


Peter Singfield wrote:
> At 06:04 PM 7/1/2007 -0700, you wrote:
>> Harmon,
>>
>> I may be confused, but it was my impression that crankcases are normally
>> vented, except in the case of two-cycle engines which use the downward
>> stroke of the piston to force a fresh charge into the combustion chamber.
>>
>> Mark
>>
> 
> Not to start a major argument -- but single cylinder old style Listers and
> single cylinder chinese diesels have no "back" pressure in the crank case!!
> 
> Inertia due to rapid reversal of direction of piston travel "sets" the rings.
> 
    Not inertia, it's the pressure that builds up behind the piston as
it goes down. Regardless of the crankcase ventilation.

-- 
Harmon Seaver



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