[Gasification] dual fueling two stroke diesels?

[Benjamin Domingo Bof]

Rolf; would you to tell me bore  and stroke of Lanz?
  regards, Benjamin

Rolf Uhle <energiesnaturals at gmx.de> escribió:
  Hallo Bruce and all,

one of the main probs of the Lanz gas engines was the fouling inside the 
crank case!
It required frequent "freeburns" with abundant petrol  and delivered 
enormous clouds of smoke on that occasion.
That´s why the gas sluice was invented. This is simply a tube slightly 
bigger (30 %) than the crank/stroke volume connected to the crankase inlet 
port with the diaprhagm valve removed and mounted at the end of that tube. 
A T- piece connected the gas sluice directly to the inlet port of the 
engine and the downgoing piston pressed the content of the sluice right 
into the cylinder without fouling the crankcase.
This and the simple  twostroke -hotbulb design helped to seemingly cope 
with very low quality gas. 
Due to the low CR of 6- 9 , this engine was never a good converter eff. 
wise.

In dual fuel mode Lanz recommanded to inject 150 - 200 g/ l engine volume 
and h unregarded of the actual power reqirements to help to ignite the low 
grade gas and largely compensate for the typical power loss.
I  have a drawing of this arrangement and also one of a Lanz engine with 
inlet valves in the head from an old publication. Anyone want to see it ?

Rolf 

> 
> -------- Original-Nachricht --------
> Datum: Wed, 16 Jan 2008 13:27:11 -0800
> Von: "jim mason" 
> An: "Discussion of biomass pyrolysis and gasification" 
> 
> Betreff: Re: [Gasification] dual fueling two stroke diesels?
> 
> On Jan 16, 2008 11:39 AM, Bruce Jackson 
> wrote:
> > Has anyone heard of dualfueling detroit two stroke
> > diesel engines with producer gas? Websites? Anything?
> > thanks
> > BPJ
> >
> 
> i thought andy in the great lakes had a truck set up like this.
> someone around the list does. there is a webpage about it.
> 
> the lack of intake valves would surely help to prevent tar fouling of
> the intake valves. or just transfer the problem to the blower
> bearings. but as those are turning, not linearly sliding, there will
> be less issue. better of course, to not make tar.
> 
> i would think these engines would be good candidates for syngas.
> 
> jim
> 
> 
> 
> >
> > 
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> -- 
> 
> --------------------------------------------------------------------------------
> jim mason
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