[Gasification] Producer Gas Engine Paper
Rolf Uhle
energiesnaturals at gmx.de
Fri Jul 1 07:05:19 CDT 2011
Hello Ken,
it all relates to many factors, piston speed, head cavern design,piston
surface temp,timing of course,all versus flame propagation speed.
A small "normal" 1500/1800 or even 3000/3600 engine can very well have slower
piston speeds than a big oldfashioned longstroke engine.
By the way, have you ever tinkered with the prechamber form in your Lister?
Is Jim' s Listeroid DI ? Can' t ask him myself 'cause he doesn' t answer me
any more.
salut
Rolf
Am Freitag, 1. Juli 2011 13:29:21 schrieb Ken Boak:
> This is an interesting discussion, which tends to make me believe that the
> future of woodgas, will be ignited with the use of conventional diesel
> engines, modified for spark ignition, rather than the initially more
> obvious choice of a gasoline engine.
>
> If, as suggested that woodgas can be used without knock problems in a stock
> diesel engine at a compression ratio of 17:1, then this better than
> compensates for the loss of efficiency when used in a gasoline engine.
>
> As an enthusiastic user of the slow speed Lister type diesel engines, I
> hope to be commencing some power tests on woodgas later this year. It
> will be interesting to see how woodgas performs at the much slower 600
> rpm of the Lister, compared to the more normal 1500/1800rpm of a direct
> drive diesel generator. The Lister being an old design with a relatively
> long stroke of 5.5" has a mean piston speed of about 10 feet per second
> - how this relates to a modern, "squarer" higher rpm engine I would need
> to
> investigate.
>
>
>
> Ken
>
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