| 摘要 |
<p>Fittings with internal drain passages leading to the outside through an exterior orifice are normally used in high pressure fluid systems where fluid must be transferred through a wall and leakage on at least one side of the wall cannot be tolerated. Such fittings are used, for example, in compression ignition engines where the fuel injectors are located inside of the valve cover. Any leakage drains from the exterior orifice of the fitting down the outside of the engine. On some installations the side of the engine on which these fittings are mounted must be located out of sight of the operator and the operator is unable to observe if any leakage is occurring. The present invention overcomes this problem by providing a fitting (12) that drains into a drain passage (64) that is located within the engine wall (7, 11). The drain passage (64) in the engine wall (7, 11) is routed within the engine (4) to the most convenient drain point (80) for monitoring.</p> |
