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

Sat Aug 13 01:14:02 CDT 2011

Solid advice, Greg, but not everyone speaks the lingo. Maybe you could kit
this 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
couple of schematics; the parts are cheap and in terms of the total project
cost, the cost is insignificant. Alas! Not everyone is of the digital age!

Best, Mark

-----Original Message-----
From: gasification-bounces at lists.bioenergylists.org
[mailto:gasification-bounces at lists.bioenergylists.org] On Behalf Of Greg
Manning
Sent: Friday, August 12, 2011 6:32 PM
To: Discussion of biomass pyrolysis and gasification
Subject: 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
a 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"
with a PIC or Stamp, but really now, KISS (Keep It Simple Stupid), the most
relable 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
counter's clock cycle could be a second hall effect transistor counting
flywheel teeth (the main sensor would be TDC or what ever basic advance you
would want in the system.

The Flywheel tooth sensor would be clocked by the teeth themself's, and a
devide by "X" counter would count "X" flywheel teeth and then advance the
devide 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
electronics supply houses or Woodward (used on the L or M series position
controlers).

The entire unit (trigger assy), NOT CDI or coil packs or plug conversions,
should cost under 20 bucks, the rest would be in the
100-250 area.

Getting a set of injectors from the scrapyard would save on design cost of
the sparkplug conversion, by using the spare injector bodies as the "meat"
of 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
ap=&seatType=gasket&terminalType=&heatRange=&reach=25.4mm+%281%22%29&resisto
r=&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,
Brandon, Manitoba, Canada

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