Hi Rolf, The Listeroid at APL is a JKSon Indian copy which is an Indirect Injection with the original Lister type pre-chamber head and a flat topped piston.
I have not tinkered with the pre-chamber form, other than adding a spark-plug into the cast iron plug, where the compression change-over valve would have fitted. I was thinking of having some sort of arrangement like in a model compression ignition aero-engine, where the compression ratio could be varied with some sort of a movable "contra-piston" - but my machining skills are not up to producing such a component. I hope to make significant advances with woodgas trials on my Lister this summer. Ken On 1 July 2011 13:05, Rolf Uhle <[email protected]> wrote: > 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 > > > > _______________________________________________ > Gasification mailing list > > to Send a Message to the list, use the email address > [email protected] > > to UNSUBSCRIBE or Change your List Settings use the web page > > http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioenergylists.org > > for more Gasifiers, News and Information see our web site: > http://gasifiers.bioenergylists.org/ >
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