Relation of Fuel-Air Ratio to Engine Performance
A 1925 technical report from NASA's Technical Reports Server, a set of engineering charts on fuel-air ratio and engine performance, likely for engine researchers and mechanical engineers. Its two plotted graphs show indicated mean effective pressure and fuel consumption per horse power hour plotted against pounds of fuel per pound of air, with numbered curves for cylinders run lean and at equal mixture quality. For a designer, the pictures offer a plain, dense grid of fine black curves, stepped labels and axis ticks that suit technical infographic reference.
