Research on Magnetism Monitoring Technology of Piston Ring Wear for Marine Diesel Engine

Abstract With the development of computer technology, computer simulation has become a powerful tool to carry out liner - piston ring wear experiment of Marine diesel engines. Turbocharged diesel engine is a typical multi-system and multi-level complex power plant. There are many factors that affect the piston change and wear speed of diesel engine in practical operation, and many factors are interrelated and influence each other. Marine diesel engine is the most important mechanical equipment in Marine engine room, which has a complex system structure. If the diesel engine fails, it will seriously affect the navigation safety of the ship. In order to reduce the loss of Marine diesel engine piston ring wear, it is necessary to rely on fault diagnosis technology for timely and reliable diagnosis and maintenance.

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On the Abnormal Piston Ring Wear of a Marine Diesel Engine

Transactions of the Japan Society of Mechanical Engineers ◽

10.1299/kikai1938.29.1923 ◽

1963 ◽

Vol 29 (208) ◽

pp. 1923-1935

Author(s):

Tatsuo YANO ◽

Yutaro WAKURI ◽

Shoji MITSUTAKE ◽

Juji ONO

Keyword(s):

Diesel Engine ◽

Piston Ring ◽

Marine Diesel Engine ◽

Marine Diesel

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Lubrication analysis of the piston ring of a two-stroke marine diesel engine considering thermal effects

Engineering Failure Analysis ◽

10.1016/j.engfailanal.2021.105659 ◽

2021 ◽

pp. 105659

Author(s):

Bowen Jiao ◽

Tongyang Li ◽

Xuan Ma ◽

Chuanjuan Wang ◽

Hanzhang Xu ◽

...

Keyword(s):

Diesel Engine ◽

Thermal Effects ◽

Piston Ring ◽

Marine Diesel Engine ◽

Marine Diesel

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Simulation Analysis on Wearing Quantity of Marine Low-Speed Diesel Engine’s Piston Ring

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.152-154.1057 ◽

2012 ◽

Vol 152-154 ◽

pp. 1057-1062

Author(s):

Guo Jin Chen ◽

Zhang Ming Peng ◽

Jian Guo Yang ◽

Qiao Ying Huang

Keyword(s):

Mathematical Model ◽

Diesel Engine ◽

Piston Ring ◽

Simulation Analysis ◽

Marine Diesel Engine ◽

Axial Motion ◽

Marine Diesel ◽

The Mathematical Model ◽

Online Monitor ◽

Oil Tanker

This paper establishes the mathematical model of the piston ring’s wearing capacity for the marine diesel engine, studies the influence of the piston ring’s axial motion and radial motion to the magnetic field’s output signal, computes and analyzes the corresponding relationships of the magnetoresistive sensor’s output and the piston ring’s wearing capacity, and does the on-board experiment on the oil tanker with the 6RTA52U diesel engine. Measuring actually the magnetoresistive sensor’s output corresponding to the piston ring’s wearing capacity of the marine diesel engine confirms the correctness for the mathematical model of the wearing capacity. The research conclusions lay the technical foundation for the online monitor of the piston ring’s wear.

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Investigation of different piston ring curvatures on lubricant transport along cylinder liner in large two-stroke marine diesel engines

Proceedings of the Institution of Mechanical Engineers Part J Journal of Engineering Tribology ◽

10.1177/1350650117744100 ◽

2017 ◽

Vol 232 (1) ◽

pp. 85-93 ◽

Cited By ~ 4

Author(s):

H Overgaard ◽

P Klit ◽

A Vølund

Keyword(s):

Diesel Engine ◽

Piston Ring ◽

Reynolds Equation ◽

Hydrodynamic Lubrication ◽

Cylinder Liner ◽

Marine Diesel Engine ◽

Cyclic Variation ◽

Ring Shape ◽

Marine Diesel ◽

The Finite Difference Method

A theoretical investigation of the hydrodynamic lubrication of the top compression piston ring in a large two-stroke marine diesel engine is presented. The groove mounted piston ring is driven by the reciprocal motion of the piston. The ring shape follows a circular geometry and the effect of changes in radii is analysed. A numerical model based on the finite difference method in 1D has been developed for solving Reynolds equation in combination with the load equilibrium equation together with flow continuity between the piston ring surface and liner for analysis of the lubricant transport. The cyclic variation throughout one stroke is presented for the minimum film thicknesses at different interesting locations of the piston ring surface together with the friction and the pressure distribution history. The aforementioned parameters have been investigated numerically. The numerical results are presented and discussed.

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