Analysis of diverse simulation models for combustion engine journal bearings and the influence of oil condition

Bukovnik, Sasa; Dörr, Nicole; Caika, Valdas; Bartz, W. J.; Loibnegger, Bernhard

doi:10.1016/j.triboint.2005.07.023

Cited by 30 publications

(15 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The usage of this relaxation method allows the consideration of a simple cavitation algorithm. 3 Each negative pressure value is set equal to a given cavitation pressure which is constant.…”

Section: Numerical Solution Of the Coupled Systemmentioning

confidence: 99%

“…Both the energy equation of the oil fi lm (equation [9]) and the heat equation of the shell body (equation [3]) are iteratively solved with respect to the unknown temperature under consideration of the applied boundary conditions. In addition to the circumferential and axial fi nite volume discretisation applied to the Reynolds equation, a third discrete space dimension in the clearance gap direction is used.…”

Section: Numerical Solution Of the Coupled Systemmentioning

confidence: 99%

“…1 The interactive consideration of multi-body systems 2 and thermal effects in crankshaft bearings have provided new insights into the dynamic behaviour of crankshaft bearings, 3 but have also increased the numerical effort (CPU requirements) signifi cantly.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Thermo‐elasto‐hydrodynamic lubrication model for journal bearing including shear rate‐dependent viscosity

Bukovnik

Offner

Caika

et al. 2007

Lubrication Science

Self Cite

View full text Add to dashboard Cite

The simulation of the non-stationary response of the journal bearings used in combustion engines plays a signifi cant role in the bearing design process. Diverse simulation models contain various oil viscosity defi nitions taking pressure and temperature into consideration. However, viscosity dependence on the shear rate is often neglected. Within this paper, a bearing simulation model including the shear rate-dependent viscosity is described. The modifi ed Cross equation was used to describe shear rate infl uence on viscosity. Numerical modelling of the main crankshaft bearing of a modern four-cylinder gasoline engine was performed. Selected calculation results were discussed and conclusions drawn. The modelling and calculation were carried out using the AVL software EXCITE (AVL LIST GmbH, Advanced Simulation Technology, Hans-List-Platz 1, Graz, Austria 8020). Copyright

show abstract

Section: Numerical Solution Of the Coupled Systemmentioning

confidence: 99%

Section: Numerical Solution Of the Coupled Systemmentioning

confidence: 99%

See 1 more Smart Citation

Thermo‐elasto‐hydrodynamic lubrication model for journal bearing including shear rate‐dependent viscosity

Bukovnik

Offner

Caika

et al. 2007

Lubrication Science

Self Cite

View full text Add to dashboard Cite

show abstract

“…The simulation models are classified as the methods based on hydrodynamic, elastohydrodynamic (EHD), and thermo-elasto-hydrodynamic lubrication theories [6][7][8][9][10]. Bukovnick et al [11] compared the different models for the simulation of non-stationary response of the journal bearings used in combustion engines. Recently, coupling simulations between EHD and nonlinear multi-body dynamics (MBD) have been conducted for dynamically-loaded bearings of a marine diesel engine.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of lubrication performance of crank pin bearing in a marine diesel engine

2018

View full text Add to dashboard Cite

Abstract:In this study, the lubrication performance of the crank pin bearing in a marine two-stroke diesel engine is evaluated to investigate the adhesional failure on the crank pin bearing. A numerical algorithm for the lubrication analysis considering motion analysis of the crank pin system is developed. The film pressure and thickness for three clearances and three lubricant temperatures are calculated. The results show that the lubricant temperature has a higher effect on film thickness than clearance. In terms of the film parameter, the operating condition that can result in solid-solid contact is investigated. We also suggest the desirable operating conditions of clearance and lubricant temperature to prevent the solid-solid contact.

show abstract

“…Piston crankshaft system of multi-cylinder diesel engines is a system with complex structure and variable stiffness and damping. In the past researches, the load on the system was always seen as constant value in the dynamic performance simulation of piston crankshaft system, and oil film lubrication was ignored or seen as linear model in the lubrication analysis [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

Coupling simulation between tribology and dynamic of flexible multi-body of piston crankshaft system

Cui

2010

2010 International Conference on Mechanic Automation and Control Engineering

View full text Add to dashboard Cite

Based on a seven-cylinder diesel, coupling analysis between tribology and dynamics of flexible multi-body is studied. The flexible multi-body dynamic model is established using ADAMS and ANSYS, and the film forces models and computation program are constructed based hydrodynamic lubrication theory considering tribology action of cylinder-piston and crankshaft-bearing system, the coupling simulation analysis is studied. Comparing with the simulation result of not considering coupling analysis of tribology interaction, rotating speed of crank, friction force of piston, the film force of bearing and the danger position of crankshaft are compared. It is found that the coupling analysis has great affection to dynamics analysis and checking of piston crankshaft system, while it is necessary to study coupling of dynamic behavior of flexible multi-body and lubrication in design of diesel engine.

show abstract

Analysis of diverse simulation models for combustion engine journal bearings and the influence of oil condition

Cited by 30 publications

References 5 publications

Thermo‐elasto‐hydrodynamic lubrication model for journal bearing including shear rate‐dependent viscosity

Thermo‐elasto‐hydrodynamic lubrication model for journal bearing including shear rate‐dependent viscosity

Evaluation of lubrication performance of crank pin bearing in a marine diesel engine

Coupling simulation between tribology and dynamic of flexible multi-body of piston crankshaft system

Contact Info

Product

Resources

About