[Gasification] Which engine design might be BEST for woodgas?

GF gfwhell at aol.com
Sat Aug 13 09:38:51 CDT 2011


There is a simple circuit in the "Encyclopedia of Electronic Circuits" for converting a step motor, into a poor mans "encoder", turning the sine wave into a square wave.
There is no guarantee a starter ring has the correct number of teeth dividable by 4. Our Mercedes has a sensor on a  fly wheel,for its ignition timing, perhaps I could copy their arrangement.
This car doesn't have an engine oil dipstick so I refuse to open the hood.All maintenance requirements, being directed to the driver via the dashboard.
What is the expected temperature of the exhaust, at the exhaust manifold of this type of engine when fully loaded? 
Would it be worth keeping the diesel fuel "capability" ? seems like there is a conversion for regulating wood gas into the inlet manifold using diesel oil,  for ignition only?
This engine will be used for "co generating' under full load..
I will never forget the day my "Coventry Climax" 2 cylinder diesel engine ran away due to an idiot putting to much oil in the air cleaner oil bath, it almost got fully climaxed.

GF


-----Original Message-----
From: Mark E. Ludlow <mark at ludlow.com>
To: 'Discussion of biomass pyrolysis and gasification' <gasification at lists.bioenergylists.org>
Sent: Sat, Aug 13, 2011 2:14 am
Subject: Re: [Gasification] Which engine design might be BEST for woodgas?


Solid advice, Greg, but not everyone speaks the lingo. Maybe you could kit
his for a small stipend(?) I agree with the approach.
But it would take a novice several days to decipher what we could do with a
ouple of schematics; the parts are cheap and in terms of the total project
ost, the cost is insignificant. Alas! Not everyone is of the digital age!
Best, Mark
-----Original Message-----
rom: gasification-bounces at lists.bioenergylists.org
mailto:gasification-bounces at lists.bioenergylists.org] On Behalf Of Greg
anning
ent: Friday, August 12, 2011 6:32 PM
o: Discussion of biomass pyrolysis and gasification
ubject: Re: [Gasification] Which engine design might be BEST for woodgas?
-Hi GF, List.
It would make a good candidate rom the standoint of high compression, is is
 three of four cylinder ?
The injector pump could simply be removed and a  cover plate installed.
As far as Solid-state timing and CDI spark, We could get "Real Fancy"
ith a PIC or Stamp, but really now, KISS (Keep It Simple Stupid), the most
elable way would be a hall effect transister and a devide by 4 counter
assuming that this engine is a 4 cylinder) the pulse train for the
ounter's clock cycle could be a second hall effect transistor counting
lywheel teeth (the main sensor would be TDC or what ever basic advance you
ould want in the system.
The Flywheel tooth sensor would be clocked by the teeth themself's, and a
evide by "X" counter would count "X" flywheel teeth and then advance the
evide by 4 counter for spark trigger.
the entire SI conversion unit could be housed in a WP zinc project box
Hammond or equ.) and the hall effect transistors are available from most
lectronics supply houses or Woodward (used on the L or M series position
ontrolers).
The entire unit (trigger assy), NOT CDI or coil packs or plug conversions,
hould cost under 20 bucks, the rest would be in the
00-250 area.
Getting a set of injectors from the scrapyard would save on design cost of
he sparkplug conversion, by using the spare injector bodies as the "meat"
f the plug converters.
Sparkplugs,  I would assume that a 1" (25mm) reach plug wold be required.
Champion has a "find by type" application
http://www.championsparkplugs.com/search_char.asp?threadSize=14mm&hexSize=&g
p=&seatType=gasket&terminalType=&heatRange=&reach=25.4mm+%281%22%29&resisto
=&action.x=44&action.y=14
(watch for word wrap on the above)
Greg
On Thu, Aug 11, 2011 at 7:23 PM, GF <gfwhell at aol.com> wrote:
 Greg,
 I have an old complete Rabbit Diesel engine (early version).Do you 
 think this would make a suitable candidate for conversion to "Wood GAS"
 for driving a 15kw alternator? If so what solid state ignition system 
 should I substitute for the injector pump?

 GF

 -----Original Message-----
 From: Greg Manning <a31ford at gmail.com>
 To: Discussion of biomass pyrolysis and gasification 
 <gasification at lists.bioenergylists.org>
 Sent: Thu, Aug 11, 2011 7:49 pm
 Subject: Re: [Gasification] Which engine design might be BEST for woodgas?

 Greetings Pete, and list.
 Large piston, long stroke (slow RPM),  many cylinder (8+), high 
 compression engines, are the best Candidates  A 16 cylinder 1000 CID 
 15 to 1 Compression, 5" + stroke would be ideal.
 Caterpillar makes a Really Nice 3412. remove the injectors, double the 
 headgaskets,  re-lash the valves for the higher head height, install 
 SI unit in place of the injector pump... would be fantastic !!!!
 anyone got a cool 40 grand kicking around for the engine ??
 Greg Manning
 On Thu, Aug 11, 2011 at 4:54 PM, Pete & Sheri 
 <spaco at baldwin-telecom.net>
 wrote:
>
>
> Since folks are currently commenting on their favorite exotic engine, 
> maybe it would be worthwhile to examine the whole field of “funny” 
> engines that have appeared and disappeared over the years as 
> candidates for  the unique properties of producer gas/woodgas, etc.
>
>
>
> Of course, I have my own favorite funny engine, invented by the 
> brother of a co worker, but I will not burden you all with that one 
> for now.
>
>
>
> There may even be some value in imagining a ground-up engine design 
> that would be IDEAL for our fuel.
>
>
>
> Pete Stanaitis
>
> ------------------
>
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 --
  Regards,
 Greg Manning,
 Brandon, Manitoba, Canada
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--
Regards,
Greg Manning,
randon, Manitoba, Canada
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