Rotary motion measuring device of piston ring that also serves to measure the temperature of the cylinder liner wall surface

摘要

An object of the present invention is to provide means for simultaneously measuring the rotational motion of the piston ring and the temperature of the inner wall surface of the cylinder liner.;In order to accomplish the above object, the present invention provides a method of manufacturing a thermocouple, comprising: drilling a drill hole at a predetermined interval in a cylinder liner where a piston ring is brought into contact with the piston when the piston is located at a top dead center; inserting a thermocouple wire; sealing a drill hole with a cast-After the wires are fixed, the thermocouple wires are collectively collected through the wall surface of the cylinder block, and the temperature distribution information of each part of the cylinder liner detected through the thermocouple wires is sent to the analyzer to measure the number of revolutions of the piston ring .