The effect of stabilizing pressure of a stable pressure box with damping line of the air flow is studied in order to measure the pulsate flow ability of air at the intake and exhaust pipes of engine.
为了测量发动机进、排气管内气流的脉动流动特性，对自行设计的对气流起稳压作用的阻尼稳压箱进行了研究。
The maximum resistance allowances of the intake system and air filter are gained for the D9-220 engine. This provides a basis for the intake line design and the air filter selection of the engine.
得到D9-220柴油机进气系统和空滤器的最大阻力限值，为进气管路的设计和空滤器的选择提供了依据。
The maximum resistance allowances of the intake system and air filter are gained for the D9-220 engine. This provides a basis for the intake line design and the air filter selection of the engine.
得到D9-220柴油机进气系统和空滤器的最大阻力限值，为进气管路的设计和空滤器的选择提供了依据。
应用推荐