Hydrogen as an Auxiliary Fuel in Compression-Ignition Engines
This is a 1936 NASA technical report on using hydrogen as a supplementary fuel in diesel-type compression-ignition engines, issued through the NASA Technical Reports Server for engineers and researchers. The first picture shows a laboratory test setup with a gas-handling machine and a row of tall cylinders, while the second shows cross-section drawings of combustion chamber shapes at two compression ratios, which a designer could use as reference for clean technical line diagrams with labeled callouts.
