配气机构是发动机的换气机构，换气过程：控制气门按时关了，保证气配时充分燃烧混合气和排撂废气。
Valve bodies are engines of ventilators, ventilation process: on time and turn off the control valve to ensure full combustion gas mixed with gas and emissions.
配气机构是发动机的换气机构，换气过程：控制气门按时关了，保证气配时充分燃烧混合气和排撂废气。
Valve bodies are engines of ventilators, ventilation process: on time and turn off the control valve to ensure full combustion gas mixed with gas and emissions.
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