Bryansk, Bryansk, Russian Federation
employee
Bryansk, Bryansk, Russian Federation
employee
Bryansk, Bryansk, Russian Federation
graduate student
Bryansk, Bryansk, Russian Federation
VAK Russia 2.5.3
UDC 531.43
Russian Library and Bibliographic Classification 393
The paper considers the connecting rod-piston group of a car engine, in particular, the conical and connecting rod necks. It is shown that in the oil starvation mode, the crankshaft and connecting rod necks are subject to wear and lead to engine malfunction and shutdown. It is found that oil starvation occurred as a result of the discrepancy between the manufacture material and the hardness of the third necks in the third connecting rod bearing. It is shown that the cause of the accidental wear of the parts of the third connecting rod bearing (inserts and connecting rod neck) are defects in the manufacture of the crankshaft associated with the use of poor-quality structural material with an inhomogeneous structure (with non-metallic inclusions), as well as non–compliance with the manufacturing technology of the crankshaft (surface hardening technology - induction hardening).
wear, connecting rod-piston group, bearing, oil starvation, neck, friction, load
1. Lukashova EV, Vashchinina AP, Shalygin MG, Osipov TI. Study of the crankshaft of YaMZ-238D1 diesel engine that failed during operation. Transport Engineering. 2025;5: 32-38.
2. Shalygin MG, Vashchinin SP, Vashchinina AP. Study of physico-chemical and anti-wear properties of motor oils at the end of operation. Transport Engineering. 2024;3: 12-19.
3. Shets SP. On the issue of increasing the durability of sliding bearings in automobile engines. Collection of Papers of International Scientific and Technical Conference, June, 2007: Actual Problems of Tribology; Moscow: Mashinostroenie; 2007.
4. Madorsky LV. Diagnosis of the technical condition of machines by external signs: textbook. Rostov-on-Don: Rostov State Transport University; 2003.
5. Dmitrichenko NF, Milanenko AA, Glukhonets AA, Minyailo KN. Method for predicting the durability of rolling bearings and the optimal choice of lubricants in conditions of abundant lubrication and oil starvation. Friction and Wear. 2017;38(2):114-120.
6. Shets SP. Wear of unsteadily loaded radial sliding bearings. Bryansk.: Bryansk State Technical University. 2007;1(13):13-19.
7. Khrulev AE, Kochurenko YuV. Method for determining the causes of internal combustion engine malfunction in case of severe operational damage. Internal Combustion Engines. 2017;1:52-60.
8. Razgovorov KI. Method for determining the causes of oil starvation in gasoline engines of passenger cars. Novie Materiali I Tekhnologii v Mashinostroenii. 2019;30:77-80.
9. Shets SP, Gorlenko AO, Shalygin MG. Increasing the efficiency of hydrodynamic lubrication formation in sliding bearings using magnetic fluid. Stroitel'nye i Dorozhnye Mashiny. 2023;5:27-31.
