Influence of cylinder liner vibration on lateral motion and tribological behaviors for piston in internal combustion engine

Meng, F-M; Xf, Wang; Tt, Li; Yp, Chen

doi:10.1177/1350650114545140

Cited by 13 publications

(12 citation statements)

References 32 publications

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“…Zhu et al, 7 Wong et al, 8 and Liu et al 9 established a more sophisticated model using the average flow model 10,11 to consider the influences of surface roughness and waviness in the piston skirt-liner system. In recent years, more piston parameters and influencing factors related to the tribo-dynamic behavior of the piston skirt have been investigated, 12–20 such as the piston skirt profile, the elastic deformation of the piston skirt and the liner, the cylinder liner vibration, and the connecting rod’s inertial parameters. Meng and Xie 21 presented a new tribo-dynamic model for the piston skirt-liner system in high-speed four-stroke engines by considering the effects of connecting rod inertia.…”

Section: Introductionmentioning

confidence: 99%

A new comprehensive tribo-dynamic analysis for lubricated translational joints in low-speed two-stroke marine engines

Meng

et al. 2019

International Journal of Engine Research

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In low-speed two-stroke marine engines, the effect of connecting rod inertia is important for the tribo-dynamics of crosshead slipper-guide and piston skirt-liner. However, this has not been considered in previous research. Therefore, a new tribo-dynamic model that considers the connecting rod inertia is presented for the two lubricated translational joints, and the lubricant viscosity–temperature properties are accurately incorporated into the model. The modified extended backward differentiation formulate method is used to solve the nonlinear stiff differential equations effectively. The simulation results show that the effect of connecting rod inertia on the dynamic characteristics of two translational joints is mainly observed during the latter half of the upward stroke. For the crosshead slipper, the amplitude of the transverse velocity is increased by 30% at a crank angle of approximately 300° compared to the early model that ignored the connecting rod inertia. With the increase of the connecting rod mass, the secondary motions of both the crosshead slipper and the piston skirt are increased. Furthermore, a decrease of the connecting rod mass can reduce the friction losses of the engine.

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Section: Introductionmentioning

confidence: 99%

A new comprehensive tribo-dynamic analysis for lubricated translational joints in low-speed two-stroke marine engines

Meng

et al. 2019

International Journal of Engine Research

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“…Besides the above works, more researches on the piston secondary motion have been carried out by taking some factors into 2 Shock and Vibration consideration, such as surface roughness and lubrication condition. Meng et al [11] investigated the influence of cylinder vibration on the lateral motion and tribological performances of the piston. The fluctuations of the cylinder vibration can be reduced by increasing mass, stiffness, and damping of the cylinder.…”

Section: Introductionmentioning

confidence: 99%

The Analysis of Secondary Motion and Lubrication Performance of Piston considering the Piston Skirt Profile

Lü

Wang

et al. 2018

Shock and Vibration

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The work performance of piston-cylinder liner system is affected by the lubrication condition and the secondary motion of the piston. Therefore, more and more attention has been paid to the secondary motion and lubrication of the piston. In this paper, the Jakobson-Floberg-Olsson (JFO) boundary condition is employed to describe the rupture and reformation of oil film. The average Reynolds equation of skirt lubrication is solved by the finite difference method (FDM). The secondary motion of pistonconnecting rod system is modeled; the trajectory of the piston is calculated by the Runge-Kutta method. By considering the inertia of the connecting rod, the influence of the longitudinal and horizontal profiles of piston skirt, the offset of the piston pin, and the thermal deformation on the secondary motion and lubrication performance is investigated. The parabolic longitudinal profile, the smaller top radial reduction and ellipticities of the middle-convex piston, and the bigger bottom radial reduction and ellipticities can effectively reduce the secondary displacement and velocity, the skirt thrust, friction, and the friction power loss. The results show that the connecting rod inertia, piston skirt profile, and thermal deformation have important influence on secondary motion and lubrication performance of the piston.

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“…We can see from Fig. (3), the crankshaft offset also has certain influences on piston transverse velocity, through the crank offset can reduce the piston transverse velocity maximum, but in addition to this case, offset -14.5 mm, can be 25% lower than the zero biased, other crank offsets' maximums have limited effects to reduce the piston transverse movement speed value [14].…”

Section: Effects Of Crankshaft Bias On Piston Transverse Movementsmentioning

confidence: 97%

Analysis of the Influences of Piston Crankshaft Offset on Piston Secondary Movements

Yan¹,

Jin²,

Zhang³

2015

TOMEJ

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This paper takes dynamics analysis on the piston and the dynamic lubrication theory on the skirt and the ring of piston as the basis. Using AVL Glide software, through the establishment of the analysis model of the piston secondary movements, this study focuses on the effects of the crankshaft bias on piston secondary movements’ characteristics. This paper takes 5 different offsets, by comparing the piston lateral displacement, transverse movement speed, transverse acceleration, swinging angle, swing angular velocity and angular acceleration, finds out the relationships between crank offset value and the piston “slap”, piston impact energy and piston skirt friction loss, thus, provides the basis for the design of internal combustion engines.

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Influence of cylinder liner vibration on lateral motion and tribological behaviors for piston in internal combustion engine

Cited by 13 publications

References 32 publications

A new comprehensive tribo-dynamic analysis for lubricated translational joints in low-speed two-stroke marine engines

A new comprehensive tribo-dynamic analysis for lubricated translational joints in low-speed two-stroke marine engines

The Analysis of Secondary Motion and Lubrication Performance of Piston considering the Piston Skirt Profile

Analysis of the Influences of Piston Crankshaft Offset on Piston Secondary Movements

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