In a diesel engine, adding more fuel will almost always result in more horsepower, and last month, that's exactly what we did in our "Fuel It Up!" article. There are drawbacks to making power in this ...

This file type includes high resolution graphics and schematics when applicable. The images above are simple cross sections of a typical spool valve (left) and a poppet valve (right). (Courtesy of ...

Determine forces on the valve spool to optimize solenoid size. Designers of spool-type, solenoid-operated hydraulic valves often face the vexing problem of increasing flow while shrinking the size of ...