According to the emission test results, the emissions from motorcycles can be reduced effectively after fitted with the secondary air-in devices.
2
PCV系统将窜漏进曲轴箱的混合气引入进气系统，然后在燃烧室内进行二次燃烧。
PCV system will be a mixture of leaking into the crankcase leap into air intake system in the combustion chamber, then a second combustion.
3
提出了进气初始分布器与二次气体分布盘的组合模式，并列举了组合模式在大型塔中的应用实例。
The combination pattern of initial gas distributor and secondary gas distributing tray is put forward and its application example in large column was enumerated.
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