This document provides instructions for building a simplified wood gas generator that can fuel internal combustion engines as an emergency fuel source if petroleum supplies are disrupted. . Detailed, step-by-step fabrication procedures are presented for a simplified version of the World War II, Imbert wood gas generator. This simple, stratified, downdraft gasifier unit can be . In creating wood gas for fueling internal combustion engines, it is important that the gas not only be properly produce