Study of the process of connecting rod liners’ shape changing in the pre-failure operation period of transport and technological machines and equipment
- Authors: Kulakov A.T.1, Kulakov O.A.1, Kalimullin R.F.2, Barylnikova E.P.2
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Affiliations:
- KAMAZ-Autosport
- Naberezhnye Chelny Institute (Branch) of Kazan Federal University
- Issue: Vol 90, No 5 (2023)
- Pages: 469-476
- Section: Quality, reliability
- URL: https://journals.rcsi.science/0321-4443/article/view/249969
- DOI: https://doi.org/10.17816/0321-4443-462805
- ID: 249969
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Abstract
BACKGROUND: During the operation of transport and technological machines and equipment, the most frequent failure is loose running of connecting rod liners of a crankshaft. Previous studies on tractor, locomotive and automotive diesel engines did not sufficiently disclose the reasons for loose running of liners.
AIMS: Study of the stress-strain state of the steel base of connecting rod liners as the initial and developing factors of the process leading to failure.
METHODS: The research is based on the analysis of numerous works devoted to the study of the causes of loose running of connecting rod liners of various internal combustion engines. The methods and results on the operational and bench studies of the stress state and shape changing of connecting rod liners for the KAMAZ-740 (8Ch 12/12) engine obtained by the team of authors are used as the basic data.
RESULTS: The process of change in stress state and consequent change in geometric parameters of the steel base, accompanied by change in the shape of connecting rod liners of the KAMAZ-740 engines has been revealed. It is established with the study that the occurrence of failure is not sudden. The process proceeds according to a certain pattern in three stages. The first stage is characterized by the appearance of deformation of a liner due to excessive stress state; the second stage is caused by development of obtained deformations up to critical values; the third stage is loose running of a connecting rod due to obtained deformations and violations of liner’s hydrodynamics conditions. The main result is justification of requirements and conditions for ensuring stability of parameters and shape of liners during long-term operation of engine.
CONCLUSIONS: Knowledge of the process leading to the change in shape of crankshaft bearing liners makes it possible to develop design and technological solutions and recommendations to eliminate failures by optimizing the parameters of liners.
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##article.viewOnOriginalSite##About the authors
Alexander T. Kulakov
KAMAZ-Autosport
Email: alttrak09@mail.ru
ORCID iD: 0000-0002-6443-0136
SPIN-code: 6745-0764
Dr. Sci. (Tech.), Professor of the Automobile Transport Operation Department
Russian Federation, Naberezhnye ChelnyOleg A. Kulakov
KAMAZ-Autosport
Email: kulakov.o@mail.ru
ORCID iD: 0009-0003-0102-4856
SPIN-code: 8504-0605
Chief Mechanic KAMAZ-Autosport
Russian Federation, Naberezhnye ChelnyRuslan F. Kalimullin
Naberezhnye Chelny Institute (Branch) of Kazan Federal University
Email: rkalimullin@mail.ru
ORCID iD: 0000-0003-4016-2381
SPIN-code: 3492-4311
Dr. Sci. (Tech.), Professor of the Automobile Transport Operation Department
Russian Federation, 18A Shamilya Usmanova street, 423813 Naberezhnye ChelnyElena P. Barylnikova
Naberezhnye Chelny Institute (Branch) of Kazan Federal University
Author for correspondence.
Email: 692401@mail.ru
ORCID iD: 0000-0002-1457-1598
SPIN-code: 8003-0262
Associate Professor, Cand. Sci. (Tech.), Associate Professor of the Automobile Transport Operation Department
Russian Federation, 18A Shamilya Usmanova street, 423813 Naberezhnye ChelnyReferences
- Buravtsev BK. Build quality of crankshaft bearings and reliability of diesel engines. Avtomobilnyy transport. 1982;12:41–42. (in Russ).
- Buravtsev SK, Buravtsev BK. Increasing the reliability of connecting rod bearings of engine crankshafts. Dvigatelestroenie. 1983;3:3–7. (in Russ).
- Gafiyatullin AA. Obespechenie rabotosposobnosti shatunnykh podshipnikov avtotraktornykh digateley putem sozdaniya nerazryvnosti maslyanogo potoka [dissertation] Saratov; 2005. (in Russ).
- Grigoriev MA, Doletsky VA. Ensuring engine reliability. Moscow: Izd-vo standartov; 1978. (in Russ).
- Surkin VI, Popov GP. Optimization of parameters of a tractor diesel connecting rod bearing. Dvigatelestroenie. 1984;3:41–43. (in Russ).
- Denisov AS, Kulakov AT. Analysis of the causes of operational destruction of connecting rod bearings of KamAZ-740 engines. Dvigatelestroenie. 1981;9:37–40. (in Russ).
- Kulakov AT. Razrabotka sposoba diagnostirovaniya shatunnykh podshipni¬kov dvigateley i prakticheskikh rekomendatsiy dlya snizheniya ikh otkazov v protsesse ekspluatatsii (na primere KamAZ-740) [dissertation] Saratov; 1986. (in Russ).
- Bykov VG, Saltykov MA, Gorbunov MN. Reasons for irreversible changes in thin-walled bearings and ways to improve the reliability of bearings in highly loaded diesel engines. Dvigatelestroenie. 1980;6:54–57. (in Russ).
- Bykov VG, Saltykov MA, Gorbunov MN. A new way to ensure stability of the geometric parameters of liners for highly loaded diesel bearings. Dvigatelestroenie. 1985;8:32–36. (in Russ).
- Antropov BS, Yanovsky MA, Nesterov DA. Improving the performance of crankshaft bearings. Tractors and agricultural machinery. 2007;12:35–36. (in Russ).
- Kulakov AT, Sakhapov IA, Kulakov OA. Diagnosis of shape changes in connecting rod bearings of diesel engines. Avtotransportnoe predpriyatie. 2008;8:47–49. (in Russ).
- Patent RUS № 2691259 / 11.06.2019. Byull. № 17. Makushin AA, Kulakov AT, Kulakov OA, et al. Sposob opredeleniya zazora v shatunnom podshipnike kolenchatogo vala pri ispytanii i diagnostike dvigatelya vnutrennego sgoraniya avtomobiley, transportnykh i transportno-tekhnologicheskikh mashin. (in Russ). Accessed: 29.05.2023. Available from: https://yandex.ru/patents/doc/RU2691259C1_20190611
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