当进汽歧管(即化油器节汽门下方)之真空变小(约小于10inHg以下时)，弹簧将真空活塞(vacuum piston)向下推，将强力阀打开，汽油由强力油阀进入主油道，提供较浓混合汽，不经主油嘴而与高速油路并联供油。
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vacuum piston assembly 真空活塞组件
vacuum piston plate 真空活塞板
piston vacuum pump [真空] 往复真空泵
rotary piston vacuum pump [真空] 定片真空泵 ; 滑阀真空泵 ; 回转式柱塞真空泵
vacuum control piston 真空控制活塞
vacuum cylinder piston spring 真空缸活塞弹簧
single piston pressure vacuum gauge 单活塞压力真空计
piston vacuum generator 活塞式真空发生器
The automatic choke includes a thermostatic spring and a vacuum piston.
自动阻风门包括一个恒温控制弹簧和一个真空活塞。
One end of a probe telescopic rod is provided with an ultrasonic sensor, a flow velocity determinator, a pressure sensor and a vacuum piston water sample collector.
探头伸缩杆一端安有超声波传感器、流速测定仪、压力传感器和真空活塞水样采集器。
The piston moves up and down in the piston chamber primarily in response to changes in intake manifold vacuum.
活塞主要因进气歧管真空度的变化而在活塞腔内上下移动。
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