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一、概述 1.用节流法测量流体流量在内燃机设计,研究和试验工作中,空气流量测量是一项必要的项目,如测定发动机的充气效率,了解可燃混合器的空燃比,测定增压器的效率等。冶金、化工、石油等部门在输送液体或气体的管道中,安装节流器来测量流量的方法,在内燃机空气流量测量中也被广泛应用。这是因为节流器构造简单,造价低,测量精度高,积累的实验数据丰富。
I. Overview 1. Measurement of fluid flow throttling method In the design, research and experimental work of internal combustion engines, air flow measurement is an essential project, such as measuring the engine’s charge efficiency, understanding the combustible air-fuel ratio of the mixer, determining the boost The efficiency of the device. Metallurgical, chemical, petroleum and other departments in the delivery of liquid or gas pipe, install the throttle to measure the flow of the method, the internal combustion engine air flow measurement is also widely used. This is because the throttle structure is simple, low cost, high measurement accuracy, the accumulation of experimental data.