Testing system for monitoring temperature of piston ring of marine engine

By installing fiber-optic coupled infrared sensors and data processing units on the engine cylinder liners, the limitations of traditional contact measurement methods have been overcome, enabling real-time and accurate monitoring of piston ring temperature and improving the engine's operational safety and reliability.

CN224552710UActive Publication Date: 2026-07-24CSSC POWER INST CO LTD
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Patent Information

Application Number
CN202521703886.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-08-11
Publication Date
2026-07-24
Estimated Expiration
2035-08-11

AI Technical Summary

Technical Problem

In existing technologies, traditional contact-type piston ring temperature measurement methods cannot achieve real-time monitoring. They suffer from problems such as destructiveness, large errors, material limitations, and inability to dynamically calibrate, and cannot meet the real-time temperature monitoring requirements of engines under high temperature and high pressure environments.

Method used

By employing non-contact infrared temperature measurement technology, multiple test holes are designed on the cylinder liner to install fiber-coupled infrared sensors. Combined with an FPGA-based data acquisition unit and a data processing unit based on Planck's radiation law, accurate and real-time monitoring of piston ring temperature is achieved.

Benefits of technology

It achieves high-precision, high-speed non-contact measurement of piston ring temperature, reducing the risk of damage to the engine structure, improving measurement accuracy and response speed, and capturing minute temperature changes in the piston rings, thereby enhancing the engine's operational safety and reliability.

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Abstract

The utility model relates to a test system for monitoring the temperature of a piston ring of a marine engine, which belongs to the technical field of marine engine temperature monitoring and comprises an infrared temperature measurement module arranged in a cylinder sleeve test hole, a data acquisition unit electrically connected with the infrared temperature measurement module and a data processing unit electrically connected with the data acquisition unit. The number of the cylinder sleeve test holes is multiple, the infrared temperature measurement module is used for measuring the temperature of different positions of the piston ring, measured temperature data are collected through the data collection unit and subjected to primary processing, and the data processing unit receives the data transmitted by the data collection unit and then conducts deep analysis and processing so as to obtain the temperature distribution condition of the piston ring. According to the utility model, the temperature of the piston ring can be accurately monitored in real time in the operation process of the engine, so that the limitation of the traditional contact measurement method is overcome, and the damage risk of the piston ring and the cylinder sleeve is reduced.
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