Publication detail
Shape Design of a Piston Ring
DRÁPAL, L. VOPAŘIL, J.
Czech title
Návhr tvaru pístního kroužku
English title
Shape Design of a Piston Ring
Type
conference paper
Language
en
Original abstract
This paper deals with an engineering design of a fire-ring originated in a two-stroke compression-ignition engine with opposed pistons and uniflow scavenging. Determination of ring profile design, material, and ring thermal expansion are described. Main attention is paid to the design algorithm of a piston ring free shape to assure static pressure distribution of the ring mounted to the cylinder liner and simultaneously avoid plastic deformations during correct ring installation to the piston. A strain-stress analysis is performed by using the finite elements method. The developed methodology is generally utilizable for design of top and second compression rings for two- and also four-stroke engines.
Czech abstract
Tento článek se zabývá konstrukčním návrhem žárového pístního kroužku dvoudobého vznětového motoru s protiběžnými písty a souproudým vyplachováním a popisuje profil kroužku, jeho materiál a tepelnou roztažnost. Hlavní pozornost je věnována algoritmu návrhu tvaru pístního kroužku v nezamontovaném stavu, tak aby bylo dodrženo rozložení statického tlaku po zamontování do válce a současně byly vyloučeny plastické deformace při montáži kroužku na píst. Napěťově-deformační analysa je provedena s využitím metody konečných prvků. Vyvinutá metodika je obecně použitelná pro návrh těsnicích pístních kroužků dvoudobých i čtyřdobých motorů.
English abstract
This paper deals with an engineering design of a fire-ring originated in a two-stroke compression-ignition engine with opposed pistons and uniflow scavenging. Determination of ring profile design, material, and ring thermal expansion are described. Main attention is paid to the design algorithm of a piston ring free shape to assure static pressure distribution of the ring mounted to the cylinder liner and simultaneously avoid plastic deformations during correct ring installation to the piston. A strain-stress analysis is performed by using the finite elements method. The developed methodology is generally utilizable for design of top and second compression rings for two- and also four-stroke engines.
Keywords in Czech
pístní kroužek, píst, rozložení tlaku, návrh, metoda konečných prvků
Keywords in English
piston ring, piston, pressure distribution, design, finite elements method
Released
05.10.2016
Publisher
Kaunas University of Technology
Location
Kaunas, Lithuania
ISSN
1822-296X
Book
Transport Means 2016: Proceeding of the 20th International Scientific Conference
Volume
2
Number
20
Pages from–to
767–771
Pages count
5
BIBTEX
@inproceedings{BUT129628,
author="Lubomír {Drápal} and Jan {Vopařil},
title="Shape Design of a Piston Ring",
booktitle="Transport Means 2016: Proceeding of the 20th International Scientific Conference ",
year="2016",
volume="2",
number="20",
month="October",
pages="767--771",
publisher="Kaunas University of Technology",
address="Kaunas, Lithuania",
issn="1822-296X"
}