Publication detail
Design and Simulation of Progressive Crank Train
DRÁPAL, L. NOVOTNÝ, P.
Czech title
Návrh a simulace pokrokového klikového mechanismu
English title
Design and Simulation of Progressive Crank Train
Type
conference paper
Language
en
Original abstract
This paper describes efficiency enhancing of an internal-combustion engine by means of improvements in mechanical efficiency of its crank train. The keynote is the reduction of number of crankshaft main bearings to gain reduced crankshaft power losses. The progressive concept of an assembled crankshaft derives benefits from forging, sheet plate molding, and laser welding. For examination of not only power losses benefits, but also dynamic behaviour challenges, the state-of-the-art computational methods are used. The computational model, including modally reduced flexible bodies, is assembled as well as numerically solved in a Multi-Body System. An interaction between crankshaft and engine block and between crankshaft and connecting rods is simultaneously solved via hydrodynamic model of a journal bearing.
Czech abstract
Tento článek popisuje zvyšování účinnosti spalovacího motoru prostřednictvím zvýšení mechanické účinnosti jeho klikového mechanismu. Hlavní myšlenkou je snížení počtu hlavních ložisek, jež přináší snížení třecích ztrát. Pokroková koncepce klikového hřídele využívá výhod kování, tváření a laserového svařování. Přínos v oblasti třecích ztrát, jakož celkové dynamické chování, jsou stanoveny pomocí pokročilých soudobých výpočetních metod. Výpočtový model, obsahující modálně redukovaná pružná tělesa, je sestaven a numericky řešen v prostředí Multi-Body System. Vzájemné působení mezi klikovým hřídelem a blokem motoru i mezi klikovým hřídelem a ojnicemi je zahrnuto prostřednictvím hydrodynamického modelu kluzného ložiska.
English abstract
This paper describes efficiency enhancing of an internal-combustion engine by means of improvements in mechanical efficiency of its crank train. The keynote is the reduction of number of crankshaft main bearings to gain reduced crankshaft power losses. The progressive concept of an assembled crankshaft derives benefits from forging, sheet plate molding, and laser welding. For examination of not only power losses benefits, but also dynamic behaviour challenges, the state-of-the-art computational methods are used. The computational model, including modally reduced flexible bodies, is assembled as well as numerically solved in a Multi-Body System. An interaction between crankshaft and engine block and between crankshaft and connecting rods is simultaneously solved via hydrodynamic model of a journal bearing.
Keywords in Czech
klikový mechanismus, ztrátový výkon, Muti-Body System
Keywords in English
crank train, power losses, Multi-Body System
RIV year
2015
Released
22.10.2015
Publisher
Kaunas University of Technology
Location
Kaunas, Lithuania
ISBN
9955-09-935-6
ISSN
1822-296X
Book
Transport Means 2014: Proceeding of the 19th International Scientific Conference
Volume
2015
Number
1
Pages from–to
240–243
Pages count
4
BIBTEX
@inproceedings{BUT118021,
author="Lubomír {Drápal} and Pavel {Novotný},
title="Design and Simulation of Progressive Crank Train",
booktitle="Transport Means 2014: Proceeding of the 19th International Scientific Conference ",
year="2015",
volume="2015",
number="1",
month="October",
pages="240--243",
publisher="Kaunas University of Technology",
address="Kaunas, Lithuania",
isbn="9955-09-935-6",
issn="1822-296X"
}