[Gasification] Two Engines One Gasifier

[Jeff Davis]

Thanks Max. Interesting method.

Thanks again,
Jeff





______________________________________________
"Once an owner has got used to charcoal gas he will never revert to the
more expensive fuels", Geo Bray
On May 20, 2015 9:11 AM, "gasman" <gasman at welho.com> wrote:
>
> 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
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