WO2021059743A1 - 摺動部材の損傷を監視するための自己検知材料を含む内燃機関の摺動部材 - Google Patents
摺動部材の損傷を監視するための自己検知材料を含む内燃機関の摺動部材 Download PDFInfo
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- WO2021059743A1 WO2021059743A1 PCT/JP2020/029394 JP2020029394W WO2021059743A1 WO 2021059743 A1 WO2021059743 A1 WO 2021059743A1 JP 2020029394 W JP2020029394 W JP 2020029394W WO 2021059743 A1 WO2021059743 A1 WO 2021059743A1
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- Prior art keywords
- sliding member
- self
- sliding
- detecting
- detecting material
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 18
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Images
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/02—Details or accessories of testing apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/12—Structural composition; Use of special materials or surface treatments, e.g. for rust-proofing
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F17/00—Compounds of rare earth metals
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B77/00—Component parts, details or accessories, not otherwise provided for
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F7/00—Casings, e.g. crankcases or frames
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F7/00—Casings, e.g. crankcases or frames
- F02F7/0085—Materials for constructing engines or their parts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/12—Sliding-contact bearings for exclusively rotary movement characterised by features not related to the direction of the load
- F16C17/24—Sliding-contact bearings for exclusively rotary movement characterised by features not related to the direction of the load with devices affected by abnormal or undesired positions, e.g. for preventing overheating, for safety
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C3/00—Shafts; Axles; Cranks; Eccentrics
- F16C3/04—Crankshafts, eccentric-shafts; Cranks, eccentrics
- F16C3/06—Crankshafts
- F16C3/08—Crankshafts made in one piece
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C3/00—Shafts; Axles; Cranks; Eccentrics
- F16C3/04—Crankshafts, eccentric-shafts; Cranks, eccentrics
- F16C3/18—Eccentric-shafts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/12—Structural composition; Use of special materials or surface treatments, e.g. for rust-proofing
- F16C33/122—Multilayer structures of sleeves, washers or liners
- F16C33/125—Details of bearing layers, i.e. the lining
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/12—Structural composition; Use of special materials or surface treatments, e.g. for rust-proofing
- F16C33/122—Multilayer structures of sleeves, washers or liners
- F16C33/127—Details of intermediate layers, e.g. nickel dams
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/20—Sliding surface consisting mainly of plastics
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/04—Bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B77/00—Component parts, details or accessories, not otherwise provided for
- F02B77/08—Safety, indicating, or supervising devices
- F02B77/083—Safety, indicating, or supervising devices relating to maintenance, e.g. diagnostic device
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2202/00—Solid materials defined by their properties
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2233/00—Monitoring condition, e.g. temperature, load, vibration
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2360/00—Engines or pumps
- F16C2360/22—Internal combustion engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/12—Structural composition; Use of special materials or surface treatments, e.g. for rust-proofing
- F16C33/122—Multilayer structures of sleeves, washers or liners
- F16C33/124—Details of overlays
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C41/00—Other accessories, e.g. devices integrated in the bearing not relating to the bearing function as such
Definitions
- the present invention relates to a sliding member of an internal combustion engine including a self-detecting material for monitoring damage to the sliding member.
- Patent Document 1 and Patent Document 2 disclose a bearing diagnostic device for a rotary bearing application and a detection method using an AE sensor. Further, Patent Document 3 and Patent Document 4 disclose a bearing wear monitoring system for sliding bearings and a detection method using an RFID sensor. Further, Patent Document 5 discloses a method for detecting damage to a slide bearing, in which an electrical signal provided by special particles is monitored by a detector installed in a lubricating oil passage.
- signal detection can be greatly affected by disturbance factors (for example, noise in components, foreign matter in lubricating oil, dirt, etc.). This makes accurate and reliable monitoring very difficult.
- disturbance factors for example, noise in components, foreign matter in lubricating oil, dirt, etc.
- Patent Document 1 and Patent Document 2 use an AE sensor, but the observation data is greatly affected by the actual engine environment (vibration, temperature change, integration into a sliding member having a complicated multilayer structure, etc.). there is a possibility.
- Patent Document 3 and Patent Document 4 use an RFID sensor, which is integrated into the sliding surface treatment (overlay) of the sliding member.
- RFID sensors forces production at low temperatures.
- this sensor size is typically tens of ⁇ m, it is very difficult or impossible to integrate into thin sliding surface treatments.
- dielectric particles contained in the bearing material are detected by a capacitance sensor installed in the oil drainage path. Specifically, when the bearing metal is damaged, fine particles having a different relative permittivity from the damaged piece of the bearing metal are included in the oil drainage, and between the electrodes of the capacitance sensor installed in the oil drainage path. The presence of fine particles is detected from the change in the electric field of.
- this method makes accurate and reliable measurement difficult for the following reasons.
- the measurement by the capacitance sensor is very sensitive to the amount of dust passing through the oil passage, and the amount of oil, oil temperature, density, deterioration of oil, and the performance of the oil filter can cause changes in the measurement data. For this reason, accurate and innovative monitoring is not possible.
- the detection method using the capacitance sensor cannot distinguish between the lubricating oil and the dielectric particles.
- the presence or absence of the dielectric particles in the metallic foreign matter cannot be determined, so that the dielectric particles cannot be sufficiently detected.
- the inclusion of water droplets in the oil can generate electrostatic pulses that, like metallic foreign matter, interfere with the detection of dielectric particles. Therefore, accurate and reliable monitoring is not possible.
- this capacitance sensor method requires regular maintenance because the sensor is built into the oil drainage pipe. Otherwise, sensor deterioration and significant reduction in signal detection accuracy are expected. Also, because the sensor is built into a complex engine oil lubricator, it can be very expensive to maintain.
- An object of the present invention is to provide a sliding member of an internal combustion engine including a self-detecting material for easily monitoring damage to the sliding member with high reliability.
- the present invention relates to a sliding member of an internal combustion engine including a self-detecting material for monitoring damage to the sliding member.
- the sliding member has a single-layer or multi-layer structure made of metal, alloy, and / or resin material.
- the self-detecting material is embedded in at least one of the layers constituting the sliding member.
- the self-detecting material is characterized in that it is composed of at least one kind of material that exhibits signal characteristics in response to external energy.
- the self-detecting material is a particle having a size of 0.1 ⁇ m to 100 ⁇ m.
- the self-detecting material is a particle having a size of 0.2 ⁇ m to 10 ⁇ m.
- the self-detection material is contained in a content of 50 vol% or less with respect to at least one layer of the sliding member in which the self-detection material is embedded.
- the sliding member includes self-detecting materials exhibiting different signal characteristics in layers having different depths of the sliding member.
- the self-detecting material exhibits signal properties with prominent visual features in response to external energy.
- Another aspect of the present invention is characterized in that, in the sliding device having a plurality of the above-mentioned sliding members, the plurality of the sliding members each include the self-detecting material exhibiting different signal characteristics.
- Another aspect of the present invention is an internal combustion engine including the above-mentioned sliding member or the above-mentioned sliding device.
- Another aspect of the present invention is in a method for monitoring damage to sliding members.
- the step of applying external energy to the sample It is characterized by including a step of detecting a self-detecting material in a sample.
- FIG. 1 shows a schematic view of an assembly 100 having a sliding member according to an embodiment of the present invention.
- Assembly 100 is, for example, a sliding device having a crankshaft of an internal combustion engine.
- four different sliding members 3a to 3d are shown.
- Each sliding member contains self-detecting materials 1a-1d for monitoring damage to the sliding member.
- Each sliding member has a single-layer or multi-layer structure made of metal, alloy, and / or resin material.
- the self-detecting materials 1a to 1d are embedded in at least one layer (lower layer 1 in this example) of the layers constituting the sliding member in a particle state in the present embodiment.
- the self-detecting material is composed of at least one kind of material that exhibits signal characteristics in response to external energy.
- each sliding member contains self-detecting materials 1a to 1d that emit signals different from each other. That is, the self-detection materials 1a to 1d show different colors at the time of signal detection.
- the self-detection materials 1a to 1d show different colors at the time of signal detection.
- the damaged sliding member can be identified by the color of the signal of the self-detecting materials 1a to 1d.
- Sample collection Samples for signal detection are collected in liquid or oil sludge during engine operation or repair. For example, with respect to the liquid state, the sample is recovered from the oil supply valve in the lubricating oil supply system. For sludge condition, the sample is collected from the oil filter. This oil sample or oil sludge sample is collected at regular intervals or at a specific operating time, depending on the purpose.
- sample Preparation For oil samples, pour the oil sample into a clear bottle and centrifuge at 3,000 to 5,000 rpm. Centrifugation is preferably performed at 5,000 rpm for 10 minutes. This causes the inclusions in the oil sample (including the self-detecting material) to completely settle to the bottom of the bottle. For oil sludge samples, the sample is physically crushed into powder. Then, the powdered oil sludge sample is sprayed on the black paper as the background. The spray thickness is preferably 1 mm to 2 mm.
- a handheld lighting source is used for signal detection.
- the lighting device requires an output of 50 W or more, and an output of 100 W or more is desirable. Illuminate the sample for 5 to 10 minutes (preferably 10 minutes).
- the self-detecting material in the oil and sludge samples emits light of various colors by retaining high excitation energy. Here, the emitted light is due to emitting a specific wavelength (color) in response to excitation energy from an illumination source having a specific wavelength.
- the present invention it is possible to continuously monitor the state of the sliding member.
- continuous means that, for example, if a sample is collected and analyzed every 5,000 hours, a continuous wear amount tracking survey of the sliding member is possible.
- the present invention also makes it possible to detect wear of several different sliding members in an engine system.
- a self-detecting material is, for example, a particle that exhibits a particular signal characteristic in response to a particular external stimulus.
- the specific external stimulus includes, but is not limited to, an electric field, a magnetic field, an electromagnetic wave, an ultrasonic wave, and particularly an ultraviolet ray.
- a particular signal characteristic is, for example, to exhibit one or more emission colors, the emission having salient visual features.
- a prominent visual feature is that it is visually clear.
- a typical example of a commercially available self-detecting material that emits light when excited by ultraviolet rays is shown below.
- RE represents a rare earth element.
- the self-detection material is preferably particles having a size of 0.1 ⁇ m to 100 ⁇ m.
- the reason for this is that particles smaller than 0.1 ⁇ m are difficult to detect, and particles larger than 100 ⁇ m may deteriorate the mechanical properties of the sliding member.
- the lower limit side of the particle size is 0.2 ⁇ m.
- the upper limit side of the particle size is 10 ⁇ m.
- a self-detecting material having a thickness of more than 10 ⁇ m is applied to an overlay layer having a thickness of several ⁇ m to several tens of ⁇ m in general, there is a concern that the material performance may be deteriorated due to internal stress.
- the particle size is measured in the longitudinal direction of the particles with respect to an arbitrary particle shape.
- the particle size can be measured by devices generally known in the art such as: ⁇ Shimadzu Laser Diffraction Particle Size Distribution Measuring Device (SALD-2300) ⁇ Malvern Panasonic equipment lineup
- the self-detection material is preferably contained in a content of 50 vol% or less with respect to the layer of the sliding member in which the self-detection material is embedded.
- the layer of the sliding member is, for example, a bearing alloy layer, an intermediate layer, an overlay layer, or the like of a bearing.
- the upper limit side when the content of the self-detecting material is more than 50 vol%, it may be difficult to exhibit the original bearing performance in general.
- the lower limit side if even one particle (vol% as close to 0 as possible) emits light in the sample, a visual judgment is possible (for example, it is possible to find the luminescent particle in the oil sludge sample. it can). From the viewpoint of easy capture of luminescence, it is preferably contained in a content of 0.5 vol% or more.
- self includes the meaning that signal characteristics can be acquired only by a very simple procedure (in this example, an ultraviolet light as an illumination source).
- the sliding member has a single-layer structure or a multi-layer structure, and an overlay layer or the like can be deposited on various types of base layers.
- Base layers include, but are not limited to, bronze, brass, white metal (Babbitt metal), aluminum alloys, steel, and other base layers.
- the self-detecting material can be arbitrarily included in the overlay layer and other layers depending on the intended use of the sliding member and the like.
- Sliding members can be produced by, but are not limited to, the following material production methods: sintering, casting, pressure welding, vacuum sputtering, hot and cold spraying, baking, molding and electroplating. , Or a combination of these.
- FIG. 2 is a schematic view showing a specific example of monitoring the amount of wear of the sliding member according to the embodiment of the present invention.
- the sliding member is formed by three layers 2a to 2c in the initial stage 0 (S0), and the thicknesses of the three layers are set to be the same, for example.
- the three layers 2a to 2c having different depths contain self-detecting materials 1a to 1c showing different signal characteristics.
- stage 1 (S1) the layer 2a in which the self-detection material 1a is embedded begins to wear.
- the layer 2a is completely worn, and then the layer 2b containing the self-detection material 1b is exposed.
- the wear monitoring system warns that one-third of the thickness of the sliding member has been worn in the local area as an initial warning due to the detection of the self-detecting material 1b in the oil sample or oil sludge sample.
- the self-detection material 1c contained in the lower layer 2c is detected in the stage 3 (S3), as a final warning, two-thirds of the thickness of the sliding member is worn in the local area. Warn.
- the number of layers of the sliding member and the thickness (ratio) of each layer of the sliding member can be appropriately set. According to the present invention, it is possible to predict the life of the sliding member.
- the present invention provides the following advantages over the prior art. On-site measurements are possible without additional software or huge data storage for continuous record keeping. Also, it does not require a high degree of training for the measurer. It can be incorporated into the current production process without new equipment and procedures, and can be easily compatible with the current production process. This detection and monitoring method is accurate and reliable without being affected by engine noise, metallic foreign matter, lubricating oil stains, vibration, temperature changes, and the like. Self-detecting materials can be incorporated into sliding members without bearing design changes or additional sensors. It is also cost-effective without the need for additional maintenance associated with it.
- Sliding members of internal combustion engines include crankshafts, camshafts, bearings, bushes, thrust washers, and piston components (piston rings, sliding surfaces of cylinder liners). , Not limited to that.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Organic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Ocean & Marine Engineering (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Testing Of Engines (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Sliding-Contact Bearings (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
Description
摺動部材は、金属、合金、および/または樹脂材料から作製された単層または複層の構造体を有しており、
自己検知材料は、摺動部材を構成する層のうちの少なくとも1つの層の中に埋め込まれており、
自己検知材料は、外部エネルギーに反応して信号特性を示す少なくとも1種類の材料から構成されることを特徴とする。
上述の摺動部材、上述の摺動装置、または上述の内燃機関を提供するステップと、
内燃機関の潤滑油システムからサンプルをとるステップと、
サンプルに外部エネルギーを印加するステップと、
サンプルの中の自己検知材料を検知するステップと
を含むことを特徴とする。
1.サンプル収集
信号検知用のサンプルは、エンジン運転中または補修中に液体またはオイルスラッジの状態で回収される。例えば、液体の状態に関して、サンプルは、潤滑油供給システム中のオイル供給バルブから回収される。スラッジの状態に関して、サンプルは、オイルフィルタより回収される。このオイルサンプルまたはオイルスラッジサンプルは目的に応じて、一定時間ごとや特定の運転時間に回収される。
オイルサンプルの場合、透明なボトルへオイルサンプルを注ぎ、3,000rpmから5,000rpmで遠心分離させる。遠心分離は、5,000rpmで10分間行うことが望ましい。これによって、オイルサンプル中の含有物(自己検知材料を含む)を完全にボトルの底へ沈殿させる。
オイルスラッジサンプルの場合、サンプルを物理的に潰し、粉末状にする。そして、背景となる黒い紙の上へ粉末状のオイルスラッジサンプルを散布する。散布厚みは、1mmから2mmが望ましい。
信号検知には手持ち式の照明源を使用する。照明装置は、50W以上の出力を必要とし、100W以上の出力が望ましい。サンプルを5分から10分間照らす(10分間が望ましい)。オイルサンプルやスラッジサンプル内の自己検知材料が、高い励起エネルギーを保持することで、様々な色の光を放出する。ここで、放出される光は、特定の波長の照明源からの励起エネルギーに反応して特定の波長(色)を発することによるものである。
粒子タイプ1(1a); Al2SrO4:RE (黄緑)
粒子タイプ2(1b); BaMg2Al16O27:RE (青)
粒子タイプ3(1c); Y2O3:RE (赤)
粒子タイプ4(1d); Gd2O2S:RE (緑)
粒子タイプ5(1e); Y3Al5O12:RE (黄)
ここで、REとは、希土類元素を表している。
・島津製作所 レーザ回折式粒子径分布測定装置 (SALD-2300)
・Malvern Panalytical社 装置ラインナップ
追加のソフトウェアや継続的な記録保管のための膨大なデータストレージなしに、現場での測定が可能である。また、測定者への高度な訓練を必要としない。
新しい設備および手順なしに、現在行っている生産工程への組み込みが可能であり、現在の生産工程との両立が容易である。
この検出監視方法は、エンジンノイズ、金属系異物、潤滑油汚れ、振動、温度変化等に影響されず、正確で信頼性がある。
自己検知材料は軸受設計の変更や追加のセンサなしに摺動部材の中に組み込むことができる。また、それに付随する追加のメンテナンスを必要とせず、費用対効果が高い。
1a~1d 自己検知材料
2 上層
2a~2c 摺動層
3a~3d 摺動部材
100 組立品
Claims (9)
- 摺動部材の損傷を監視するための自己検知材料を含む内燃機関の摺動部材において、
前記摺動部材は、金属、合金、および/または樹脂材料から作製された単層または複層の構造体を有しており、
前記自己検知材料は、前記摺動部材を構成する層のうちの少なくとも1つの層の中に埋め込まれており、
前記自己検知材料は、外部エネルギーに反応して信号特性を示す少なくとも1種類の材料から構成されることを特徴とする摺動部材。 - 前記自己検知材料は、0.1μmから100μmのサイズを有する粒子であることを特徴とする請求項1に記載の摺動部材。
- 前記自己検知材料は、0.2μmから10μmのサイズを有する粒子であることを特徴とする請求項1に記載の摺動部材。
- 前記自己検知材料は、前記自己検知材料が埋め込まれた前記摺動部材の前記少なくとも1つの層に対して、50vol%以下の含有量で含まれることを特徴とする請求項1~3のいずれか一項に記載の摺動部材。
- 前記摺動部材が、前記摺動部材の異なる深さの層の中に、互いに異なる信号特性を示す前記自己検知材料をそれぞれ含むことを特徴とする請求項1~4のいずれか一項に記載の摺動部材。
- 前記自己検知材料は、前記外部エネルギーに反応して顕著な視覚的特徴を有する前記信号特性を示すことを特徴とする請求項1~5のいずれか一項に記載の摺動部材。
- 請求項1~6のいずれか一項に記載の摺動部材を複数有する摺動装置において、複数の前記摺動部材が、互いに異なる信号特性を示す前記自己検知材料をそれぞれ含むことを特徴とする摺動装置。
- 請求項1~6のいずれか一項に記載の摺動部材または請求項7に記載の摺動装置を備えることを特徴とする内燃機関。
- 摺動部材の損傷を監視するための方法において、
請求項1~6のいずれか一項に記載の摺動部材、請求項7に記載の摺動装置、または請求項8に記載の内燃機関を提供するステップと、
前記内燃機関の潤滑油システムからサンプルをとるステップと、
前記サンプルに前記外部エネルギーを印加するステップと、
前記サンプルの中の前記自己検知材料を検知するステップと
を含むことを特徴とする方法。
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KR1020227009723A KR20220045235A (ko) | 2019-09-27 | 2020-07-31 | 슬라이딩 부재의 손상을 감시하기 위한 자기 검지 재료를 포함하는 내연 기관의 슬라이딩 부재 |
US17/763,521 US20230341293A1 (en) | 2019-09-27 | 2020-07-31 | Sliding member of internal combustion engine including self-detecting material for monitoring sliding member damage |
EP20868678.2A EP4036550A4 (en) | 2019-09-27 | 2020-07-31 | SLIDING ELEMENT OF AN COMBUSTION ENGINE WITH SELF-DETECTING MATERIAL FOR MONITORING DAMAGE TO SLIDING ELEMENTS |
CN202080067770.1A CN114450497A (zh) | 2019-09-27 | 2020-07-31 | 包含用于监视滑动构件的损伤的自检材料的内燃机的滑动构件 |
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Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59205022A (ja) | 1983-05-06 | 1984-11-20 | Toshiba Corp | すべり軸受の監視方法 |
JPS6258133A (ja) * | 1985-04-08 | 1987-03-13 | レツクスノルド インコ−ポレ−テツド | 機械状態診断システム |
US4884449A (en) | 1987-06-03 | 1989-12-05 | Koyo Seiko Co., Ltd | Apparatus for detecting a failure in bearings |
US5834065A (en) * | 1992-11-13 | 1998-11-10 | Surface Technology, Inc. | Composite plated articles having light-emitting properites |
JP2004144078A (ja) * | 2002-09-23 | 2004-05-20 | Man B & W Diesel As | 内燃機関の磨耗を制御するための方法 |
US20120304733A1 (en) * | 2009-07-08 | 2012-12-06 | Feist Joerg Peter | Luminescent wear sensing |
US20160208849A1 (en) | 2015-01-16 | 2016-07-21 | Mahle Engine Systems Uk Ltd. | Sliding bearing |
EP3054292A1 (en) | 2015-02-06 | 2016-08-10 | Mitsubishi Heavy Industries, Ltd. | Apparatus and method for diagnosing abnormality of bearing |
WO2017174167A1 (de) | 2016-04-04 | 2017-10-12 | Federal-Mogul Deva Gmbh | Gleitlager mit verschleissüberwachung und zugehöriges verfahren |
WO2019123925A1 (ja) * | 2017-12-20 | 2019-06-27 | 三菱日立パワーシステムズ株式会社 | スプレイパイプ、それを備えた脱硫装置およびその点検方法 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2938125A (en) * | 1955-06-06 | 1960-05-24 | Phillips Petroleum Co | Wear determination method |
US3054292A (en) | 1959-09-15 | 1962-09-18 | Vandoni Remo | Remote indicating system for liquid tanks, especially fuel tanks |
FR2877990B1 (fr) * | 2004-11-16 | 2007-02-09 | Snecma Moteurs Sa | Turbomachine a dispositif de detection automatique de particules ferromagnetiques dans une enceinte a huile |
US8845776B2 (en) * | 2009-04-28 | 2014-09-30 | Taiho Kogyo Co., Ltd. | Lead-free copper-based sintered sliding material and sliding parts |
US9404843B2 (en) * | 2014-10-09 | 2016-08-02 | Caterpillar Inc. | System and method for determining wear of a worn surface |
WO2017022803A1 (ja) * | 2015-08-03 | 2017-02-09 | Ntn株式会社 | 摺動部材、転がり軸受および保持器 |
-
2019
- 2019-09-27 JP JP2019176710A patent/JP2021056023A/ja active Pending
-
2020
- 2020-07-31 WO PCT/JP2020/029394 patent/WO2021059743A1/ja active Application Filing
- 2020-07-31 EP EP20868678.2A patent/EP4036550A4/en not_active Withdrawn
- 2020-07-31 US US17/763,521 patent/US20230341293A1/en active Pending
- 2020-07-31 KR KR1020227009723A patent/KR20220045235A/ko not_active Application Discontinuation
- 2020-07-31 CN CN202080067770.1A patent/CN114450497A/zh not_active Withdrawn
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59205022A (ja) | 1983-05-06 | 1984-11-20 | Toshiba Corp | すべり軸受の監視方法 |
JPS6258133A (ja) * | 1985-04-08 | 1987-03-13 | レツクスノルド インコ−ポレ−テツド | 機械状態診断システム |
US4884449A (en) | 1987-06-03 | 1989-12-05 | Koyo Seiko Co., Ltd | Apparatus for detecting a failure in bearings |
US5834065A (en) * | 1992-11-13 | 1998-11-10 | Surface Technology, Inc. | Composite plated articles having light-emitting properites |
JP2004144078A (ja) * | 2002-09-23 | 2004-05-20 | Man B & W Diesel As | 内燃機関の磨耗を制御するための方法 |
US20120304733A1 (en) * | 2009-07-08 | 2012-12-06 | Feist Joerg Peter | Luminescent wear sensing |
US20160208849A1 (en) | 2015-01-16 | 2016-07-21 | Mahle Engine Systems Uk Ltd. | Sliding bearing |
EP3054292A1 (en) | 2015-02-06 | 2016-08-10 | Mitsubishi Heavy Industries, Ltd. | Apparatus and method for diagnosing abnormality of bearing |
WO2017174167A1 (de) | 2016-04-04 | 2017-10-12 | Federal-Mogul Deva Gmbh | Gleitlager mit verschleissüberwachung und zugehöriges verfahren |
WO2019123925A1 (ja) * | 2017-12-20 | 2019-06-27 | 三菱日立パワーシステムズ株式会社 | スプレイパイプ、それを備えた脱硫装置およびその点検方法 |
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EP4036550A1 (en) | 2022-08-03 |
KR20220045235A (ko) | 2022-04-12 |
CN114450497A (zh) | 2022-05-06 |
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