Effiziente Finite-Elemente-Lösung der Energiegleichung zur thermischen Berechnung tribologischer Kontakte

Jaitner, Dirk; Schönen, R.; Knoll, Gunter; Rienäcker, Adrian

doi:10.1007/s10010-018-0282-0

Cited by 6 publications

(1 citation statement)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…By coupling of the energy equation to the heat conduction in the surrounding structures, it is finally possible to calculate the temperature in the lubricant and also in the surrounding solid structures. For this purpose, the energy equation for the solid has to be solved additionally (Jaitner, 2017):…”

Section: Thermo-elastohydrodynamic Lubrication (Tehl) Simulation Methodsmentioning

confidence: 99%

Thermo-elastohydrodynamic simulation of the piston-cylinder contact in high-pressure pumps at 3000 bar

Özdemir

Fischer

Rienäcker

et al. 2019

ILT

View full text Add to dashboard Cite

Purpose The purpose of this paper is to show these effects in an abstracted micro gap test bench. Because of stronger emission laws, the ambition to raise the rail pressure in common-rail systems from the current 2500 bar to 3000 bar is a given. The pressure increase will allow fine atomization of fuel and therefore more efficient combustion. But within the technical system of the high-pressure pump, stronger thermal stresses of the piston–cylinder contact are expected. A pressure drop from such a high level causes high temperature gradients due to energy dissipation. Design/methodology/approach For a detailed examination, the critical piston–cylinder contact has been investigated in an abstracted test bench with a flat parallel gap and an equivalent thermo-elastohydrodynamic simulation model. Findings The simulation results show good accordance to the measurements of pressures, temperatures and leakages for pressures up to 3000 bar. Comparison with elastohydrodynamic lubrication results outlines the need to consider temperature and pressure effects viscosity and solid deformation for the simulation and design of tribological contacts at high pressures. Originality/value This paper describes a simulation method with high accuracy to investigate tribological contacts considering temperature effects on solid structures and the fluid film. The thermo-elastohydrodynamic lubrication simulation method is valid not only for piston–cylinder contacts in high-pressure pumps but also for journal bearings in combustion engines.

show abstract

Section: Thermo-elastohydrodynamic Lubrication (Tehl) Simulation Methodsmentioning

confidence: 99%

Thermo-elastohydrodynamic simulation of the piston-cylinder contact in high-pressure pumps at 3000 bar

Özdemir

Fischer

Rienäcker

et al. 2019

ILT

View full text Add to dashboard Cite

show abstract

Thermo-Elastohydrodynamic Connecting Rod Simulation of a Four Stroke Medium Speed Engine

Lang

Knoll

Böhm³

et al. 2021

Experten-Forum Powertrain: Simulation Und Test 2020

View full text Add to dashboard Cite

Design and research of a heavy load fatigue test system based on hydraulic control for full-size marine low-speed diesel engine bearings

Chen,

Wang,

Zhong

et al. 2023

Ocean Engineering

View full text Add to dashboard Cite

Effiziente Finite-Elemente-Lösung der Energiegleichung zur thermischen Berechnung tribologischer Kontakte

Cited by 6 publications

References 16 publications

Thermo-elastohydrodynamic simulation of the piston-cylinder contact in high-pressure pumps at 3000 bar

Thermo-elastohydrodynamic simulation of the piston-cylinder contact in high-pressure pumps at 3000 bar

Thermo-Elastohydrodynamic Connecting Rod Simulation of a Four Stroke Medium Speed Engine

Design and research of a heavy load fatigue test system based on hydraulic control for full-size marine low-speed diesel engine bearings

Contact Info

Product

Resources

About