Publication result detail

Torsional Vibration of Unconventional Crankshaft in Four-cylinder Passenger Car Engine

DRÁPAL, L.; VOPAŘIL, J.

Original Title

Torsional Vibration of Unconventional Crankshaft in Four-cylinder Passenger Car Engine

English Title

Torsional Vibration of Unconventional Crankshaft in Four-cylinder Passenger Car Engine

Type

Paper in proceedings (conference paper)

Original Abstract

Modern internal-combustion engines have to meet demands on the overall engine efficiency which consists of particular efficiencies. The one of them is mechanical efficiency and its high value is exacted from internal-combustion engines. The reduction of friction losses of crankshaft main bearings can significantly contribute to the enhancement of this efficiency. This is the reason of development of an innovative design of a crankshaft. The potential and capabilities of computational modelling during the development of this innovative crank train is described in the paper. The dynamic computational model of the whole crank train is assembled and solved by using a Multi-Body System software, where modally reduced flexible bodies along with hydrodynamic bearings are incorporated. The paper presents the simulation results concentrated on the torsional vibration and its analysis, including concept design of a torsional damper, because a reduction of friction losses is associated with the improvement of torsional vibration in this case. On the grounds of low-costs, a rubber torsional damper is taken into account.

English abstract

Modern internal-combustion engines have to meet demands on the overall engine efficiency which consists of particular efficiencies. The one of them is mechanical efficiency and its high value is exacted from internal-combustion engines. The reduction of friction losses of crankshaft main bearings can significantly contribute to the enhancement of this efficiency. This is the reason of development of an innovative design of a crankshaft. The potential and capabilities of computational modelling during the development of this innovative crank train is described in the paper. The dynamic computational model of the whole crank train is assembled and solved by using a Multi-Body System software, where modally reduced flexible bodies along with hydrodynamic bearings are incorporated. The paper presents the simulation results concentrated on the torsional vibration and its analysis, including concept design of a torsional damper, because a reduction of friction losses is associated with the improvement of torsional vibration in this case. On the grounds of low-costs, a rubber torsional damper is taken into account.

Keywords

torsional vibration, crank train, crankshaft, Multi-Body System

Key words in English

torsional vibration, crank train, crankshaft, Multi-Body System

Authors

DRÁPAL, L.; VOPAŘIL, J.

RIV year

2018

Released

20.09.2017

Publisher

Kaunas University of Technology

Location

Kaunas, Lithuania

Book

Transport Means 2017 – Proceedings of the 21st International Conference

ISBN

1822-296X

Periodical

Transport Means

Volume

2

Number

21

State

Republic of Lithuania

Pages from

699

Pages to

703

Pages count

5

BibTex

@inproceedings{BUT144940,
  author="Lubomír {Drápal} and Jan {Vopařil}",
  title="Torsional Vibration of Unconventional Crankshaft in Four-cylinder Passenger
Car Engine",
  booktitle="Transport Means 2017 – Proceedings of the 21st International Conference",
  year="2017",
  journal="Transport Means",
  volume="2",
  number="21",
  pages="699--703",
  publisher="Kaunas University of Technology",
  address="Kaunas, Lithuania",
  issn="1822-296X"
}