Email this article Thermometry of the torsional vibration damper of the crankshaft of an automotive eight-cylinder diesel engine.
- Authors: Kostina A., Nikishin V.N.
- Section: Theory, designing, testing
- Submitted: 13.09.2024
- Accepted: 28.06.2025
- Published: 01.07.2025
- URL: https://journals.eco-vector.com/0321-4443/article/view/635969
- DOI: https://doi.org/10.17816/0321-4443-635969
- ID: 635969
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Abstract
Abstract
BACKGROUND: The effectiveness of torsional vibration dampers depends on both the design characteristics and the operating conditions of the engine. Thermometry of the liquid damper will reveal the effectiveness of their use, and will also allow you to trace the nature of changes in the thermal state of the dampers with the nature of changes in the temperature of the working fluid of the engine.… .
AIMS: Investigation of the thermal state of the dampers and its effect on the efficiency of quenching torsional vibrations, as well as the effect on the performance of the dampers of the groove location on the supporting surface of the housing.… .
MATERIALS AND METHODS:The effectiveness of the damper was evaluated by the magnitude of the maximum amplitude of the angle of rotation of the crankshaft toe, measured by the operation of the engine according to the external speed characteristic … .
RESULTS: Проведено термометрирование гасителей крутильных колебаний, получена зависимость величины угла закрутки коленчатого вала, температуры масла и демпфера от времени прогрева при 2400 мин-1.… .
CONCLUSIONS: The thermal condition of the extinguishers is determined by the temperature of the oil in the engine pan and does not depend on the location of the measuring points in the housing. The angle of rotation of the crankshaft toe changes slightly during operation for an hour at 2400 min-1 mode… .
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Introduction
Dampers are used to dampen the torsional vibrations of the crankshaft. For this purpose, two types of dampers are usually used: rubber and liquid (silicone) [1]. Rubber dampers are simpler in design, but they can only be effective at one resonant frequency and cannot be placed in an enclosed space due to the possibility of overheating. Liquid dampers, as experience shows, are effective in almost the entire range of operating speeds of the crankshaft (Fig.1 and 2).
Fig. 1. Vibration damping efficiency of the coupling bolt of the front main support of a 4H13/12 diesel engine: 1 – without a torsional vibration damper; 2 – with a damper
Fig. 2. Efficiency of torsional vibration damping crankshaft oscillation by a liquid damper of a 4H13/12 diesel engine:1 – without a damper; 2 – with a damper
Structurally, liquid dampers are placed in an enclosed space without forced cooling. As is known, the damping efficiency depends on the viscosity of the applied
About the authors
Albina Kostina
Author for correspondence.
Email: satullaevaar@gmail.com
SPIN-code: 2612-7997
Russian Federation
Vyacheslav Nikolaevich Nikishin
Email: VNNikishin@kpfu.ru
SPIN-code: 6978-1196
References
- Nikishin V.N. Applied theory of vibrations in automobile and engine building: textbook / Vyach. Nick. Nikishin, Dr. techg. Sciences':FGBI VPO
- Naberezhnye Chelny: Publishing House of the Kama State Engineering and Economics. akad. , 2012 - 324 p. - Nikishin V.N. Formation and quality assurance of automotive diesel. Part II / V. N. Nikishin, Doctor of Technical Sciences:FGBI VPO
- Naberezhnye Chelny: Publishing House of the Kama State Engineering and Economics. Akad. , 2008 – 175 p. - Nikishin V.N. Formation and quality assurance of automobile diesel. Part I / V. N. Nikishn, Ministry of Education and Science;
- Naberezhnye Chelny: Publishing House of the Kama State Engineering and Economics. akad. , 2006 – 456 p. - Torsional vibration dampers: here's how they prevent crankshafts from breaking — Land Rover Discovery IV, 3 L, 2016 | other | DRIVE2. URL: https://www.drive2.ru/l/665469793058425744 /?ysclid=m0ktlpj3u6205892642 (07/10/2024)
- Grezina A.V., Komarov V. N. On extinguishing the KR
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СМИ зарегистрировано Федеральной службой по надзору в сфере связи, информационных технологий и массовых коммуникаций (Роскомнадзор).