throttling action

Owing to the totally elimination of the throttling action to the air inflow, this kind of unthrottled SI engine can greatly decrease the pumping loss, which makes the fuel consumption reduce 10-15% under small and medium-sized load.

由于完全取消了节气门对进气的节流作用，这种无节气门汽油机将大幅度地降低泵气损失，使中小负荷时的燃油耗降低10-15%。

In medium and high-pressure system, temperature increases quickly because of throttling action.

在中、高压系统中，节流作用使油温升高很快。

This paper presents the control principle and method based on the equivalent throttling action of an aircraft arresting system and also presents the simulation of the arresting process by using this method.

文章主要给出了某型飞机拦阻系统基于当量节流作用的控制原理及方法，进行了拦阻过程仿真，仿真结果表明，采用此控制方法设计的系统能够适应不同撞网状况飞机的拦阻。