[Gasification] Producer Gas Engine Paper

[Rolf Uhle]

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
>