Distribution and regularity of injection from a multicylinder fuel-injection pump
This is a 1936 NACA-style technical report, issued by the National Advisory Committee for Aeronautics and later catalogued by NASA Technical Reports Server, written for engineers testing diesel fuel-injection pumps. Its four pictures are engineering graphs: line charts of fuel discharge per injection against pump speed for each cylinder, a valve-stem lift trace over the cam cycle, and pressure and injection-lag curves. A designer could borrow the clean line-graph layout, the labelled axes, and the tidy grid of cylinder symbols as a restrained model for data-driven diagrams.
