以170f柴油机为例，建立单质量、二质量和四质量三种配气机构动力学模型，并相应进行气门动态特性试验研究。

A 170f diesel valve train was taken as example, one-mass, two-mass and four-mass models were built and the valve dynamic characteristics experiment was also carried out accordingly.

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试验结果表明发动机低速时配气机构噪声主要由气门间隙敲击引起的，而高速时主要由气门落座时撞击引起的。

Test result indicates that the main noise source is the valve clearance impact under the condition of low speed, while the main source is valve-seating impact under the condition of high speed.

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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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