Hydraulic-Electric Analogies: Simple and Efficient (.PDF Download)

A simplified cut-away diagram of a conventional external-gear pump is shown in Figure 1. Gear pumps produce positive displacement, but they cannot be made variable displacement by any commercially viable means. Its principle of operation lies in the two gears and how the fluid is delivered from inlet to outlet, as well as how the inlet and outlet ports are sealed from one another...

Register or Sign in below to download the full article in .PDF format, including high-resolution graphics and schematics when applicable.