| 摘要 |
<p>The throttle valve has a shaft (44) which is positioned by a centering sleeve (56) in a hole (54) through the valve housing (2). The centering sleeve has an inner base (58) directly next to a duct. The shaft is enclosed by an inner sleeve (60) which is axially tensioned outside the valve housing especially by springs (64). The sleeve exerts pressure on the seal (62) enclosing the shaft, inside the valve housing. At least near the throttle valve (33), the duct has a rectangular, preferably square cross-section. <IMAGE></p> |
