发动机喷油嘴微小喷油孔尺寸和形状测量系统

A System for Measuring the Geometry of Spray Holes of Engine Nozzle

本文介绍一种集光学方法和机械接触方法优点于一体，用于测量发动机喷油嘴微小喷油孔尺寸和形状的测量系统，并首次给出对直径２１４μｍ的油嘴微小喷油孔尺寸和形状的测量结果。该系统测头直径为４０μｍ～１００μｍ，测量精度优于１μｍ，测量力小于１０μＮ。

A system for measuring the geometry of spray holes of engine nozzle,which combines the advantage of optical non contact method and mechanical contact one,is proposed.The measuring results of spray hole of diameter of 214 μm are reported for the first time.The stylus ball of the system is from 40 μm to 100 μm,the accuracy of the system is less than 1 μm,and the measuring force is less than 10 μN.