[Gasification] Two Engines One Gasifier

linvent at aol.com linvent at aol.com
Wed May 20 08:17:18 CDT 2015

Lot easier way to do it. 


Leland T. "Tom" Taylor
Thermogenics Inc. 

-----Original Message-----
From: gasman <gasman at welho.com>
To: Discussion of biomass pyrolysis and gasification <gasification at lists.bioenergylists.org>
Sent: Wed, May 20, 2015 7:11 am
Subject: Re: [Gasification] Two Engines One Gasifier

Hello, Jeff! 
There are two logical "formulations" that, when both used, gives a practical working solution for an "independent" motor starting from a common gas-line. 
A common gasifier delivery line usually (in a good system) keeps below 50 cm H2O. 
A motor with tight valves, without overlap and hidden crankcase ventilation into the manifold develops ~ 500 cm H2O at cranking. 
Combined with the fact: 
Identical pressure drops over identical openings (slots) results in IDENTICAL FLOWS.  (with similar fluids) 
Using identical ganged twin flaps with identical geometry for gas and air will deliver a 50/50 air/gas mix, if starting both from atmospherical pressure.  
The secondary air intake pressure has to be regulated to equal the momentary gas-line  
pressure with a membrane and air-line flap, sensing the resulting air-pressure versus the gas-line pressure.  
This way the total pressure drops in both "legs" will constantly be equal. 
To furthermore assist slow crank starting, the twin-flaps will be closed by a trimmable spring closing the flaps COMPLETELY.  
A manifold-vacuum membrane or cylinder, diameter ~2-3" opens the twin-flaps  
when the spring starts to give in for a vacuum of ~100 - 200 cm H2O. 
This opening increases as the motor fires, and has to be controlled by a manually settable stopper = idle limiter! 
When fired, there has to be a "change over" to automatic run... 
Max Gasman 
------ Originalmeddelande ------ 
Från: "Jeff Davis" <  jeffdavis0124 at gmail.com> 
Till: "Discussion of biomass pyrolysis and gasification" <  gasification at lists.bioenergylists.org> 
Skickat: 30.3.2015 03:47:47 
Ämne: [Gasification] Two Engines One Gasifier 
Dear List,
Is it practical to fuel two engines with one gas producer? I think a check valve in each fuel line would be needed but would it be a problem to get the second engine running? My system would consist of a charcoal gas producer with two 6.5hp engines.


"Once an owner has got used to charcoal gas he will never revert to the more expensive fuels", Geo Bray

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