| 摘要 |
An actuator for controlling the flow of air through an air inlet port, particularly a secondary air inlet port, in an intake manifold in an internal combustion engine. The actuator actuates means disposed in the throat of the inlet port for opening and closing said port. The actuator comprises a housing, a reversible motor disposed in the housing, power transmission means with said motor comprising a non-planetary gear train disposed in the housing, and a shaft rotatably mounted in the housing operably engaged at one end thereof with the power transmission means and at its other end with the means for opening and closing the air inlet port.
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