SU1441183A1 - Method of measuring clearance between cylinder linear and compression ring of piston internal combustion engine - Google Patents

Abstract

This invention relates to a measurement technique. The goal is to simplify and increase the reliability of the method for determining the gap between the cylinder liner and the compression ring of an internal combustion piston engine (ICE). This is achieved by placing gap sensors on the piston of the internal combustion engine, which reduces the number of gap needed to measure the sensor and eliminates the damaging effect of hot gases on their working ends due to their location in the gap between the piston and cylinder liner. In the implementation of the method, the gap 5 between and the compression ring is built into the bottom of the annular groove 3 in the process of the method, and the gap 7 is measured simultaneously and continuously with the aid of the sensor 7 installed in the inter-ring bridge of the piston 2. 8 between the piston 2 and the cylinder liner 1 of the engine. According to the results of these measurements, taking into account the dimensions of the depth of the grooves 3 and the width of the compression ring 4, determined on the piston and the ring heated to the operating temperature, calculate the required gap between the compression ring 4 and the cylinder 1 of the internal combustion engine. 1 il. (L 4 i (

Description

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The invention relates to a measurement technique and can be used to determine the gap between the cylinder liner and the compression ring of an operating internal combustion piston engine (ICE).

The purpose of the invention is to simplify and improve the reliability of the method for determining gaps during ICE operation by reducing the number of gap sensors used and preventing their damage by hot gases in a working ICE due to the location of the sensor ends in the gaps between the piston and the cylinder liner.

The drawing shows the scheme of implementation of the method. A piston 2 is installed in the sleeve of the cylinder I of the internal combustion engine, in which the compression ring 4 is placed. The sensor 5 of the gap 6 formed between the bottom of the annular groove 3 and the inner surface of the compression ring 4 is mounted in the bottom of the ring groove 3. , In the annular crosspiece of the piston 2, a sensor 7 of the gap 8 is formed, which is formed between this crosspiece of the piston 2 and the cylinder liner 1 of the cylinder. Signal: from the sensors 5 and 7 gaps are recorded by the measuring and recording unit 9.

The method is carried out as follows.

Bringing the internal combustion engine to the operating mode. Using the gap sensor 5, the gap size h is measured 6, and the gap sensor 7 measures the gap size hj. Measurements are taken simultaneously and continuously throughout the entire working cycle, registering the signals of the sensors 5 and 7 in the unit 9 registrations. According to the results of measurements with taking into account the size of the depth o. annular groove 3 and width b of the compression ring 4, known from the design documentation of the internal combustion engine and determined on the piston and ring heated to the working / temperature, calculate the required component L Editor M.Kelemesh Tehred M.Hod

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Zor h between the sleeve 1 pression ring 4 expressions:

h (a-b) - (h - hg; where a, is the depth of the annular groove 3; b is the width of the compression ring 4; hj and 2 are the gaps 6 and 8, respectively.

By placing the sensors not in the cylinder liner, but in the surface areas of the piston in the gap area, where they are not in contact with burning gases that have a high temperature, and do not experience mechanical effects, their durability is significantly increased and the laboriousness of installing them and ensuring current collection with them is reduced at the same time reducing the number of sensors used to two pieces,

Claims (1)

Formula izbretenik The method of determining the gap between the cylinder liner and the compression ring of an internal combustion piston engine S, which consists in placing the gap sensors on the engine, taking the engine to an operating mode, and registering the signals of the gap sensors during piston movement, which in order to simplify and increase reliability, use two gap sensors, one of which is installed flush with the surface of the annular jumper of the piston and the gap between this bridge and the cylinder liner is measured with it, and Another sensor is installed flush with the bottom surface of the annular groove of the piston and the gap between the bottom of this groove and the piston compression ring is measured using it, and the magnitude of the desired clearance is determined from the measurement results taking into account the depth dimensions of the piston annular groove and the diameter of its compression ring. Proofreader L, Pilipenko