Analysis of tribological aspects during operation and repair of internal combustion engine valve mechanism parts
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Дата
2024
Назва журналу
Номер ISSN
Назва тому
Видавець
Хмельницький національний університет
Анотація
The problem of researching mechanisms of wear of valve mechanism parts remains very relevant due to
the need for constant improvement of the design and increase in durability of internal combustion engines. The
paper provides an overview of modern research on the following issues: analysis of operating conditions and
malfunctions of the valve mechanism of the internal combustion engine, research on friction and wear of valve
mechanism parts, repair and restoration technologies, increasing the wear resistance of engine valves, modeling,
calculations of valve mechanism parts. It is shown that an important aspect for the analysis of the wear resistance
of valve mechanism parts is the operating conditions and the nature of damage to the surfaces of the friction pair
parts. The existing hypotheses about the mechanisms of friction, lubrication and wear of valve mechanism parts
are considered, the designs of test stands are given, and the results of tribological tests are analyzed. It is
substantiated that the technological methods of surface engineering are becoming an increasingly viable alternative
to structural changes to improve the performance of valve mechanism parts. An overview of calculation methods
for assessing the stress and thermal state of valve mechanism parts of internal combustion engines is provided.
Опис
Ключові слова
internal combustion engine, valve, guide, damage, restoration, wear resistance, modeling, finite element method
Бібліографічний опис
Vychavka A. A. Analysis of tribological aspects during operation and repair of internal combustion engine valve mechanism parts / A. A. Vychavka, O. V. Dykha, M. V. Hetman // Problems of Tribology. – 2024. – Vol. 29, No 2/112. – Р. 37-49.