Aerated Oil in the Rotating Channel

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24210%2F25%3A00013574" target="_blank" >RIV/46747885:24210/25:00013574 - isvavai.cz</a>

Výsledek na webu

<a href="https://saemobilus.sae.org/articles/aerated-oil-rotating-channel-03-18-03-0018" target="_blank" >https://saemobilus.sae.org/articles/aerated-oil-rotating-channel-03-18-03-0018</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.4271/03-18-03-0018" target="_blank" >10.4271/03-18-03-0018</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Aerated Oil in the Rotating Channel

Popis výsledku v původním jazyce

In this paper we examine the behavior of oil in the lubrication channel between the main bearing and the connecting rod bearing in the crankshaft of an internal combustion engine. The requirement for high service life and proper operation of these bearings while minimizing input power of the lubrication system, lead to the need to understand the function of these structural parts in detail. To simulate and visualize this process, an experimental device was created. The device allows the experimenters to change individual parameters such as rotation speed, oil pressure, oil temperature and aeration, while simultaneously visualizing the process with the help of a special rotating camera. These parameters are then obtained by image processing. In this way, the following influences are investigated here: at oil temperatures of 30, 50 and 80 °C, relative oil pressures of 1, 2, 3 and 4 bar, at undissolved air in the oil of 5 and 10 vol% and crankshaft station speeds from 0 to 6000 1/min. The work is inspired by previously known publications by other authors. Their results were obtained mainly using computational methods. In the case of experiments, the authors used indirect methods of measurement using pressures and flows. Therefore, this work has a great contribution in the experimental area. The results of the experiments show the influence of the tested parameters on the gradual limitation of the oil flow through the channel. At a relative oil pressure of 1 bar and a crankshaft speed of 6000 1/min, the pressure even drops to 0 bar and the oil flow through the channel collapses. The results of image processing show not only the area of the channel filled with oil, but also the distance of the beginning and end of the air bubble from the beginning of the channel.

Název v anglickém jazyce

Aerated Oil in the Rotating Channel

Popis výsledku anglicky

In this paper we examine the behavior of oil in the lubrication channel between the main bearing and the connecting rod bearing in the crankshaft of an internal combustion engine. The requirement for high service life and proper operation of these bearings while minimizing input power of the lubrication system, lead to the need to understand the function of these structural parts in detail. To simulate and visualize this process, an experimental device was created. The device allows the experimenters to change individual parameters such as rotation speed, oil pressure, oil temperature and aeration, while simultaneously visualizing the process with the help of a special rotating camera. These parameters are then obtained by image processing. In this way, the following influences are investigated here: at oil temperatures of 30, 50 and 80 °C, relative oil pressures of 1, 2, 3 and 4 bar, at undissolved air in the oil of 5 and 10 vol% and crankshaft station speeds from 0 to 6000 1/min. The work is inspired by previously known publications by other authors. Their results were obtained mainly using computational methods. In the case of experiments, the authors used indirect methods of measurement using pressures and flows. Therefore, this work has a great contribution in the experimental area. The results of the experiments show the influence of the tested parameters on the gradual limitation of the oil flow through the channel. At a relative oil pressure of 1 bar and a crankshaft speed of 6000 1/min, the pressure even drops to 0 bar and the oil flow through the channel collapses. The results of image processing show not only the area of the channel filled with oil, but also the distance of the beginning and end of the air bubble from the beginning of the channel.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20104 - Transport engineering

Projekt

<a href="/cs/project/TN02000054" target="_blank" >TN02000054: Národní centrum kompetence inženýrství pozemních vozidel Josefa Božka</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

SAE International Journal of Engines>

ISSN

1946-3936

e-ISSN

—

Svazek periodika

18

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

22

Strana od-do

—

Kód UT WoS článku

001504700900002

EID výsledku v databázi Scopus

2-s2.0-105006646523