[Gasification] SFC for De-rated Engines Was: small scalegasifiers for those that need them

[Bob Stuart]

> <snip>  Prolonging the time duration the
> rings have to contain high combustion pressures by slowing the  
> engine to a
> lower rpm than recommended is a diesel engine killer.  This is  
> especially
> true of the 20+:1 compression ratio engines in modern vehicles.
>
> Art

That is an interesting point.  At lower RPM, there is more loss to  
blow-by, although I don't see how it would increase the wear rate per  
hour.  The big diesel engines in ocean freighters are only turning  
110 RPM, and getting 50% efficiency on cheap oil.

Best,
Bob Stuart