Detail publikačního výsledku

Computational Modelling of Piston Ring Dynamics in 3D

DLUGOŠ, J.; NOVOTNÝ, P.

Original Title

Computational Modelling of Piston Ring Dynamics in 3D

English Title

Computational Modelling of Piston Ring Dynamics in 3D

Type

Peer-reviewed article not indexed in WoS or Scopus

Original Abstract

Advanced computational models of a piston assembly based on the level of virtual prototypes require a detailed description of piston ring behaviour. Considering these requirements, the piston rings operate in regimes that cannot in general be simplified into an axisymmetric model in general. The piston and the cylinder liner do not have a perfect round shape, due mainly due to machining tolerances and external thermo-mechanical loads. If the ring cannot follow the liner deformations, a local loss of contact occurs and resulting in blow-by and increased consumption of lubricant oil consumption consequently increase in the engine. Current computational models are unable to implement such effects. The paper focuses on the development of the a flexible 3D piston ring model based on the Timoshenko beam theory with the use ofusing the mMultibody system (MBS). The MBS model is compared to the fFinite element method (FEM) solution.

English abstract

Advanced computational models of a piston assembly based on the level of virtual prototypes require a detailed description of piston ring behaviour. Considering these requirements, the piston rings operate in regimes that cannot in general be simplified into an axisymmetric model in general. The piston and the cylinder liner do not have a perfect round shape, due mainly due to machining tolerances and external thermo-mechanical loads. If the ring cannot follow the liner deformations, a local loss of contact occurs and resulting in blow-by and increased consumption of lubricant oil consumption consequently increase in the engine. Current computational models are unable to implement such effects. The paper focuses on the development of the a flexible 3D piston ring model based on the Timoshenko beam theory with the use ofusing the mMultibody system (MBS). The MBS model is compared to the fFinite element method (FEM) solution.

Keywords

piston ring, dynamics, hydrodynamics, friction

Key words in English

piston ring, dynamics, hydrodynamics, friction

Authors

DLUGOŠ, J.; NOVOTNÝ, P.

RIV year

2016

Released

01.11.2015

Publisher

ČVUT

Location

Praha

ISBN

1214-0821

Periodical

MECCA - Journal of Middle European Costruction and Design of Cars

Volume

2015

Number

1

State

Czech Republic

Pages from

1

Pages to

7

Pages count

7

URL

http://www.degruyter.com/view/j/mecdc.2014.12.issue-3/mecdc-2014-0009/mecdc-2014-0009.xml?format=INT

Full text in the Digital Library

http://hdl.handle.net/

BibTex

@article{BUT119016,
  author="Jozef {Dlugoš} and Pavel {Novotný}",
  title="Computational Modelling of Piston Ring Dynamics in 3D",
  journal="MECCA - Journal of Middle European Costruction and Design of Cars",
  year="2015",
  volume="2015",
  number="1",
  pages="1--7",
  doi="10.2478/mecdc-2014-0009",
  issn="1214-0821",
  url="http://www.degruyter.com/view/j/mecdc.2014.12.issue-3/mecdc-2014-0009/mecdc-2014-0009.xml?format=INT"
}