A Study on Dynamic Response and Diagnosis Method of the Wear on Connecting Rod Bush

Jiang, Zhinong; Mao, Zhiwei; Zhang, Yidan; Zhang, Jinjie

doi:10.1007/s11668-017-0301-8

Cited by 9 publications

(4 citation statements)

References 17 publications

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“…In order to keep the analysis simple and to illustrate the dynamic behavior, all the bodies are considered to be rigid. A contact pair model is introduced to simulate the clearance [ 18 ]. Two sets of simulations are performed: one is for a different valve clearance simulated by setting a different valve clearance, and the other one is for different operating conditions simulated by changing the engine speed.…”

Section: Feature Selectionmentioning

confidence: 99%

Fault Diagnosis of Internal Combustion Engine Valve Clearance Using the Impact Commencement Detection Method

Jiang

Mao

Zhang

2017

Sensors

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Internal combustion engines (ICEs) are widely used in many important fields. The valve train clearance of an ICE usually exceeds the normal value due to wear or faulty adjustment. This work aims at diagnosing the valve clearance fault based on the vibration signals measured on the engine cylinder heads. The non-stationarity of the ICE operating condition makes it difficult to obtain the nominal baseline, which is always an awkward problem for fault diagnosis. This paper overcomes the problem by inspecting the timing of valve closing impacts, of which the referenced baseline can be obtained by referencing design parameters rather than extraction during healthy conditions. To accurately detect the timing of valve closing impact from vibration signals, we carry out a new method to detect and extract the commencement of the impacts. The results of experiments conducted on a twelve-cylinder ICE test rig show that the approach is capable of extracting the commencement of valve closing impact accurately and using only one feature can give a superior monitoring of valve clearance. With the help of this technique, the valve clearance fault becomes detectable even without the comparison to the baseline, and the changing trend of the clearance could be trackable.

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Section: Feature Selectionmentioning

confidence: 99%

Fault Diagnosis of Internal Combustion Engine Valve Clearance Using the Impact Commencement Detection Method

Jiang

Mao

Zhang

2017

Sensors

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“…Die steel possesses proper hardness and toughness, good tempering resistance, and moderate cost; thus, it is widely utilized in the manufacturing industry [1]. Wear is one of the main causes of mechanical parts failure [2][3][4][5][6]. In working processes, cyclic mechanical loadings are applied to dies, finally leading to serious damage to the workpiece.…”

Section: Introductionmentioning

confidence: 99%

Repetitive Impact Wear Behaviors of the Tempered 25Cr3Mo2NiWV Fe-Based Steel

Zhang

Dong

et al. 2020

Coatings

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This study aimed to reveal the impact wear behaviors of tempered 25Cr3Mo2NiWV steel. The specimens were subject to various heat treatment processes for generating different mechanical and wear properties. The impact wear tests were performed with an MLD-10 dynamic abrasive wear tester. Worn surface morphologies and micro-cracks of the cross-sections were analyzed by optical microscope and scanning electron microscope. The Vickers hardness of the sample and the impact wear mechanism were also analyzed. The steel with the best combination of hardness and toughness had the lowest wear. With the increase of wear time, the dominant wear mechanism varied from slight plastic deformation to micro-cutting and adhesive wear. Finally, micro fatigue peeling occurred. After impact wear, the cracks could initiate from the surface or the sub-surface. Micrographs of the crack in the cross-section demonstrated two different propagation modes of fatigue fractures. The results showed that the strength and toughness of steel affected the crack propagation, surface spalling, and wear failure mechanism during impact wear.

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“…The results showed that these factors play a significant role for the dynamic behavior of the reciprocating compressor. Jiang et al. (2017) demonstrated the study of the dynamic response and diagnosis method on wear fault of the small-end bush of a linkage in the reciprocating compressor system based on the dynamic simulation and vibration signal analysis.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear dynamic response of reciprocating compressor system with rub-impact fault caused by subsidence

Xiao

Liu

Jiang

et al. 2019

Journal of Vibration and Control

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In this paper, a nonlinear dynamic model of the single-stage reciprocating compressor system with a rub-impact fault caused by subsidence is developed, considering the piston rod flexibility. Meanwhile, different rub-impact scenarios of the crosshead including no corner, a single corner, two opposite corners, and two adjacent corners of the crosshead impacting on the slide, are considered in this model. Numerical simulation results show that the subsidence, time-varying load, and piston rod flexibility have significant effects on the vibration response of the reciprocating compressor system with rub-impact, where the larger the subsidence and time-varying load, the more intense the vibration response. Moreover, compared to the rigid piston rod, the flexible piston rod causes the system to generate stronger shock. In the rub-impact, the crosshead appeared in three different motion modes: noncontact; permanent contact; and collision – and most of the collisions occur in the form of two adjacent corners impacting on the slide. In addition, strange attractors are observed in the phase space trajectories, and the existence of chaotic behavior is verified using the Poincaré section method and maximum Lyapunov exponent method.

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A Study on Dynamic Response and Diagnosis Method of the Wear on Connecting Rod Bush

Cited by 9 publications

References 17 publications

Fault Diagnosis of Internal Combustion Engine Valve Clearance Using the Impact Commencement Detection Method

Fault Diagnosis of Internal Combustion Engine Valve Clearance Using the Impact Commencement Detection Method

Repetitive Impact Wear Behaviors of the Tempered 25Cr3Mo2NiWV Fe-Based Steel

Nonlinear dynamic response of reciprocating compressor system with rub-impact fault caused by subsidence

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