Effect of Viscosity on Fuel Leakage Between Lapped Plungers and Sleeves and on the Discharge from a Pump-Injection System
This is a 1935 NASA technical report, issued by the NACA-era Technical Reports Server, examining how fuel viscosity affects leakage past lapped pump plungers and discharge in diesel injection systems, aimed at engine engineers. The two pictures are engineering line graphs: the first plots fuel discharged in pounds per degree of pump travel for water, auto diesel and S.A.E. 30 oil across three injection-tube diameters, and the second plots leakage against a pressure axis for auto diesel, laboratory diesel and water. A designer could borrow their clean grid layouts, dashed and solid curve styling, and labelled annotations as a plain technical chart idiom.
