Penetration and Duration of Fuel Sprays from a Pump Injection System
This is a 1931 NASA technical report, a numbered NACA-style engineering study of diesel fuel injection, made for engine researchers and combustion engineers. The four plates are line graphs plotting injection timing, fuel penetration in inches against time in seconds, and pump speed against injection-valve and tube variables. For a designer the pictures offer dense, sparse grid charts with hand-drawn curves, dashed and solid line pairs, and small typed captions, useful as austere scientific chart textures.
