On-Board Hydraulic Fluid Degasification System for a Hydraulic Hybrid Vehicle

A fluid degasification system for a hydraulic circuit includes a gas/fluid separation tank, a fluid entry passage directing fluid into a small foam generating cup containing foam and a small amount of additional fluid, thereby stimulating foam formation. A separation screen is positioned below the foam generating cup to receive bubbles formed in the cup and to allow liquid to pass through the screen to a degasified-fluid collecting chamber below the screen as the bubbles resting on the separation screen decompose.