| 摘要 |
Apparatus is provided for controlling a vacuum motor to regulate the position of an air blend door in an automotive air conditioning system. The apparatus includes a sensor and an aspirator spaced apart from the sensor, with the outlet of the sensor in fluid communication with the aspirated-air inlet of the aspirator. The sensor includes a valve casing, a vacuum supply line, and a vacuum control line connected to the vacuum motor. Valve means is provided within the valve casing so that the vacuum supply line and the vacuum control line are in open communication when the valve means is open. The sensor has a bimetal element mounted in the flow of air at in-car temperatures and an adjustment arm which are independent of each other, but in operative association with the valve means to effect movement thereof. |
