| 摘要 |
<p>The seat (87) has a bore, into which the closing member (84) projects with a cylindrical region (88), the diameter of which is slightly smaller than the diameter of the bore in the seat (87). As a result, the throttle effect with the valve partially opened is increased and easily controllable. Additionally or alternatively, there is arranged between servomotor (4) and closing member (84) a differential screw gear (50', 51, 50'', 52) in order to ensure a sensitive control of the closing member (84). <IMAGE></p> |
