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

WJ Seidl wjsvt at sover.net
Mon Jul 2 08:01:23 EDT 2007


Thanks, Mark.
I'm just now learning about diesels.
Best,
Wayne

Mark Ludlow wrote:
> Wayne,
>
> The issue of discussion was originally the notion of running a diesel at
> half-speed at but at identical torque as at higher speed (linear de-rating,
> or 1/2 the horsepower output). At idle, the engines can have a very lean
> mixture, (there's a very low torque requirement), which requires much lower
> combustion pressures. In practice, the multi-ranged gearboxes of semis are
> designed so that the engines are always operating at their optimum RPM
> (except during idling).
>
>   
>   



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