| 摘要 |
<p>A solenoid actuator has an external casing comprising a part (16) mechanically drawn from a mild steel work piece and a second part in the form of a machined, screw threaded bush (20) welded to the drawn part (16). The part (16) is mechanically drawn to incorporate means such as a nut (18) by which the actuator can be threaded in to engagement with a complementary structure. In the case of a diesel engine, for example, the actuator may form a fuel cut off valve when mounted to the diesel engine valve casting.</p> |
