Redesign and dynamics of the valve train of an aircraft engine

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F21%3APU141679" target="_blank" >RIV/00216305:26210/21:PU141679 - isvavai.cz</a>

Výsledek na webu

<a href="https://koka2021.tf.czu.cz/sites/default/files/2021-09/Sborn%C3%ADk_KOKA_2021_0.pdf" target="_blank" >https://koka2021.tf.czu.cz/sites/default/files/2021-09/Sborn%C3%ADk_KOKA_2021_0.pdf</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Redesign and dynamics of the valve train of an aircraft engine

Popis výsledku v původním jazyce

In aviation, reciprocating internal combustion engines are currently used for propulsion of light aircraft. Their design is often based on older and proven engines. This paper describes part of the modernizing of a spark-ignition inverted in-line four-cylinder air-cooled engine for ultra-light aircraft. The aim of the presented section is to redesign the force transmission from the cam to the push rod of the OverHead Valve system in order to reduce production costs and improve engine performance. For this purpose, state-of-the-art methods of kinematics design and simulation of valve train dynamics are used. The article presents three variants with a flat-faced cam follower differing in the cam lift, in the lever ratio of the rocker arm and the length of the push rod. Based on dynamic simulations, the best variant is then selected with better parameters of the intake and exhaust process with the same lift and timing compared to the initial design, and simultaneously lower demands on production technolo

Název v anglickém jazyce

Redesign and dynamics of the valve train of an aircraft engine

Popis výsledku anglicky

In aviation, reciprocating internal combustion engines are currently used for propulsion of light aircraft. Their design is often based on older and proven engines. This paper describes part of the modernizing of a spark-ignition inverted in-line four-cylinder air-cooled engine for ultra-light aircraft. The aim of the presented section is to redesign the force transmission from the cam to the push rod of the OverHead Valve system in order to reduce production costs and improve engine performance. For this purpose, state-of-the-art methods of kinematics design and simulation of valve train dynamics are used. The article presents three variants with a flat-faced cam follower differing in the cam lift, in the lever ratio of the rocker arm and the length of the push rod. Based on dynamic simulations, the best variant is then selected with better parameters of the intake and exhaust process with the same lift and timing compared to the initial design, and simultaneously lower demands on production technolo

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

20301 - Mechanical engineering

Projekt

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Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2021

Kód důvěrnosti údajů

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