电磁柱塞拉下通气阀，堵住通向活性碳罐的通路。活塞销锁圈，活塞销扣环
The solenoid plunger pulls the vent valve down , blocking off the passage to the charcoal canister . piston pin snap ring
将活性炭单元插入碳罐并锁定盖。
Insert active carbon unit into the canister and lock the lid .
活性碳罐