Sliding member for internal combustion engine comprising self-test material for monitoring damage to sliding member

Abstract

Provided is a sliding member for an internal combustion engine including a self-test material for monitoring damage to the sliding member in a highly reliable and simple manner. In a sliding member for an internal combustion engine, which contains a self-checking material for monitoring damage to the sliding member, the sliding member has a single-layer or multi-layer structure made of a metal, alloy, and/or resin material, and the self-checking material is embedded in at least one of the layers constituting the sliding member. The self-test material is comprised of at least one material that reacts to external energy and exhibits signal characteristics.

Description

technical field [0001] The invention relates to a sliding member of an internal combustion engine comprising a self-testing material for monitoring damage to the sliding member. Background technique [0002] Patent Document 1 and Patent Document 2 disclose a detection method realized by a bearing diagnostic device and an AE sensor used in a rotary bearing program. In addition, Patent Document 3 and Patent Document 4 disclose a detection method realized by a bearing wear monitoring system for a sliding bearing and an RFID sensor. In addition, Patent Document 5 discloses a damage detection method of a sliding bearing that monitors electrical signals generated by special particles using a detector provided in a lubricating oil passage. [0003] Conventional sensor technology required complex production processes, additional software for observation, huge data storage, and well-trained technicians in production and data observation. Therefore, the application of conventional s...

AI Technical Summary

Problems solved by technology

Therefore, accurate and innovative surveillance is not possible

[0009] In addition, since the dielectric constants of lubricating oil and dielectric particles are similar, detection methods using electrostatic capacitance sensors cannot distinguish between lubricating oil and dielectric particles.

In addition, when the metallic foreign matter contains dielectric particles, it cannot be judged whether there are dielectric particles in the metallic foreign matter, so the dielectric particle cannot be sufficiently detected.

Also, when water droplets are mixed with oil, there may be electrostatic pulses that hinder the detection of dielectric particles in the same way as metal foreign objects

Therefore, accurate and reliable monitoring is not possible

[0010] Moreover, the electrostatic capacity sensor method requires regular maintenance because the sensor is assembled in the pipeline of the oil discharge channel.

Otherwise, sensor degradation and significant drop in signal detection accuracy are expected

Also, since the sensors are assembled in complex engine oil lubrication arrangements, their maintenance can be costly

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