Fig. S-l. Schematic view
of the stratified, downdraft gasifier Fig. S-2. The prototype
wood gas generator unit mounted onto a tractor Fig. S-3. Wood gas
generator unit in operation during field testing Fig. 1-1. Wood gas
generator unit in operation during field testing Fig. 1-2. Schematic view
of the World War II, Imbert gasifier Fig. 1-3. Schematic view
of the stratified, downdraft gasifier Fig. 2-1.The prototype
wood gas generator unit mounted onto a tractor Fig. 2-2. Exploded,
schematic diagram of the wood gas generator unit and the fuel hopper Fig. 2-3. The fire tube
and circular top plate of the gasifier unit Fig. 2-4. Drilling holes
into the stainless steel mixing bowl to be used for the grate Fig. 2-5. Chains attached
to the lip of the stainless steel mixing bowl Fig. 2-6. Connect the
mixing bowl to the top plate with chains Fig. 2-7. Braze, do
not weld, the plumbing fittings to the, thin walled drums Fig. 2-8. Exploded,
schematic diagram of the grate shaking mechanism Fig. 2-9. Parts for the
shaker assembly Fig.
2-10. The support frame can be brazed or bolted to the side of the
gasifier unit Fig.
2-11. Containers used in constructing the prototype gasifier unit
Fig. 2-12. Cover
for the fuel hopper Fig. 2-13. Operating
configuration of the fuel hopper and it's cover Fig. 2-14. Lock ring and
welded tabs Fig.
2-15. Exploded, schematic diagram of the filter unit Fig. 2-16. Detail of the
standoffs for the bottom plate of the filter unit Fig. 2-17. Divider plate
(#1) and bottom plate (#3), with standoffs (#4), for the filter unit Fig. 2-18. Circular lid
(#1) for the filter unit Fig. 2-19. Blower (#1)
with exhaust extension assembly Fig. 2-20. Assembled and
installed blower (#1), extension assembly (#4), and conduit connectors for
gas inlet (#2) and outlet (#3) on lid of filter unit Fig. 2-21. Filter
container (#1) showing latches (#2) for lid and hose (#3) around top Fig. 2-22. Exploded,
schematic diagram of the carbureting unit and control valves Fig. 2-23. Schematic
diagram of a butterfly control valve Fig. 2-24. Parts required
for the butterfly valve Fig. 2-25. Butterfly
valve assembly Fig.
2-26. Assembled butterfly valves Fig. 2-27. Assembled
carburetion unit Fig.
2-28. Carburetion unit attached to engine's existing intake manifold
Fig. 3-1.
Virtually all varieties of wood chips can be used for fuel Fig. 3-2. Ignite a single
piece of newspaper to start the gasifier unit; push the flaming newspaper
through the ignition port and directly into the grate Fig. 3-3. Igniting the
exhaust gas will demonstrate that the gasifier unit is working properly
Fig. 3-4. Refill
the fuel hopper before it becomes two-thirds empty Fig. 3-5. The lid must be
used to cover the fuel hopper in wet weather or when shutting the unit
down