Wear aspects of internal combustion engine valves

Panțuru, Marius; Chicet, Daniela Lucia; Paulin, C.; Alexandru, Adrian; Munteanu, Corneliu

doi:10.1088/1757-899x/147/1/012036

Cited by 10 publications

(7 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Из-за таких высоких температур, при неправильном выборе материала во время проектирования он теряет свои механические свойства: пластичность и прочность. Поэтому необходимо применять технологии, позволяю щие создавать новые покрытия на тарелке клапана с высокими механическими свойствами и эффективной теплопередачей к седлу и к головке блока цилиндров [1,2].…”

Section: введение виды изнашивания и причины разрушения клапановunclassified

Increasing the wear resistance of the ICE’s valves with the laser cladding method

Zavitkov,

Loktev,

Lyukhter

2023

Izvestiya MGTU MAMI

View full text Add to dashboard Cite

BACKGROUND: There is plenty of factors leading to failure and expensive repair of piston engines at their operation. One of the widespread factors capable of affecting the engine operation is combustion chamber sealing failure. During the engine operation, gases combusting in a chamber bring pressure on working surfaces of a valve and a valve seat. If these surfaces do not ensure sealing, exhaust gases begin to leak in the exhaust manifold untimely, in some cases in the intake manifold as well. In addition, filling of cylinders with inlet charge worsens. In majority of cases, combustion chamber sealing failure caused by defect formation at working surfaces of the valve — valve seat coupling. In order to avoid combustion chamber sealing failures and other issues of operation of piston engines, it is necessary to minimize working surfaces wearing by means of wear-resistant coating. AIMS: Wear- and corrosion-resistant coating of valve’s working surface to increase service life. METHODS: The factors affecting the reliability of the valve — valve seat coupling were defined by means of literary sources analysis. Laser cladding at the valve’s chamfer was conducted with the laser robotized facility based on ytterbium fiber laser. Quality of the coated surface at the valve’s working chamfer was defined by means of metallographic study and liquid penetrant test. RESULTS: After laser cladding of the PR-08Kh17N8S6G powder material at the valve’s working chamfer, the uniform coated surface with microhardness of 435–485 HV (44–48 HRC) was obtained. CONCLUSIONS: The study results may be used for development and implementation of new kinds of wear-resistant surfaces that make it possible to increase the service life and to repair worn-down surfaces of components.

show abstract

Section: введение виды изнашивания и причины разрушения клапановunclassified

Increasing the wear resistance of the ICE’s valves with the laser cladding method

Zavitkov,

Loktev,

Lyukhter

2023

Izvestiya MGTU MAMI

View full text Add to dashboard Cite

show abstract

“…Preferably, alloy steels, chromium steels, austenitic steels are used. However, titanium alloys, nickel-based super alloys like Inconel, nichrome, nimonic are also used [65]. Seralathan et al have studied the mechanical, thermal distribution performances of the aluminum nitride, stainless steel, and silicon nitride materials for the ICE valves.…”

Section: Valve Systems Of Enginesmentioning

confidence: 99%

Hybrid and electric vehicle tribology: a review

Hemanth¹,

Ananthapadmanabha²

2021

Surf. Topogr.: Metrol. Prop.

View full text Add to dashboard Cite

This comprehensive review article provides a cumulative insight into the tribology and the surface topography of the components of the electric vehicles (EV) and hybrid electric vehicles (HEV) that are subjected to friction and wear under their conventional operation. The comparison between the components that are native to EV and HEV and components that are common for both vehicle types are discretely discussed. The overall influence of such a tribology-critical component on the life and efficiency of the EV and HEV is indicated in this article as well. Identification of the research gaps in the key areas paves an avenue to channel the research and focus upon improving the efficiency of EV and HEV by improvising the design, materials, power harness, and lubrication techniques. Finally, the future scope of the global EV and HEV markets are discussed to signify the importance of the studies on the tribology of the trending automobile field. RECEIVED

show abstract

“…The burnishing rollers are pressed against the machined valve shaft (5) with springs (6) with a voltage regulated by nuts (7). The shaft of the machined valve is slided through the tubular guide (8) and supported by a spring (9). The valve face (10) of the machined valve head is burnished with a set of conical rollers (11), additionally mounted in the housing (12) which has the ability to travel in a longitudinal manner without the ability to rotate around the axis.…”

Section: The Machine For Comprehensive Surface Working Of Combustion mentioning

confidence: 99%

“…The whole machined valve is lifted up by the spring (9) and can be removed from the machine. After removing the machined valve, it is possible to place another valve in the guide (8). After releasing the lever (15), the housing (12) returns to the upper extreme position owing to the action of the spring (22).…”

Section: The Machine For Comprehensive Surface Working Of Combustion mentioning

confidence: 99%

“…Alternating thermal cycles of cooling -heating of the surface layer of the element result in its core in a steady state adopting an approximately constant, generally elevated temperature. During heating, the surface layer is subject to compression due to thermal expansion phenomena and when cooling below the core temperature, the surface layer is subject to stretching [6,8]. These variable stress cycles generated by thermal cycles can lead to the formation of a characteristic mesh of numerous cracks with a multi-directional pattern, often resembling "snake skin" [13] (Fig.…”

Section: Forms Of Operating Damage To the Valves Of Combustion Enginesmentioning

confidence: 99%

See 1 more Smart Citation

Use of Surface Working for Improving the Working Life of Piston Valves of Combustion Engines

Filipowicz¹,

Kuczaj²,

Mikuła³

2020

Transport Problems

View full text Add to dashboard Cite

show abstract

Wear aspects of internal combustion engine valves

Cited by 10 publications

References 2 publications

Increasing the wear resistance of the ICE’s valves with the laser cladding method

Increasing the wear resistance of the ICE’s valves with the laser cladding method

Hybrid and electric vehicle tribology: a review

Use of Surface Working for Improving the Working Life of Piston Valves of Combustion Engines

Contact Info

Product

Resources

About