| 摘要 |
A throttle-valve assembly (10) having a housing (12) which has a throttle opening through which a gaseous medium (70) can flow in a main flow direction (72) and which has an approximately cylindrical cross section (16), in which a throttle valve (20, 80) which is fastened pivotably on a throttle-valve shaft (18) is arranged in the throttle opening (16), and in which the throttle-valve shaft (18) can be adjusted by an actuator (30) arranged in the housing (12), is to have a throttle valve (20, 80) which has a particularly high degree of strength and a particularly low tendency toward wear. For this purpose, the throttle valve (20, 80) has an at least partially radially encircling, annular first region (60) made of a first material (66) and an approximately circular, radial second region (62) made of a second material (68), the first region (60) at least partially enclosing the second region (62), and the first material (66) of the throttle valve (20, 80) having greater strength than the second material (68) of the throttle valve (20, 80).
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