| 摘要 |
<p>A pressure relief system for hydraulic power transmissions has a main relief valve and a pilot relief valve controlling the former. The spring force of the pilot relief valve is varied by two modifiers, one of which decreases the spring force as the system pressure increases and the other of which increases the spring force as the system pressure increases. A dashpot delays the action of the second modifier to thereby reduce the pressure overshoot when the system is subjected to sudden pressure transients.</p> |
