LIST OF FIGURES
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 gasifierFig.
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 stainicss 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, schematie 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 gasifie-r 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 hottom 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, schematie 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