An Experimental Investigation into the Lubrication of Piston Rings in an Internal Combustion Engine-Oil Film Thickness Trends, Film Stability and Cavitation

1993 ◽  
Author(s):  
Neil Grice ◽  
Ian Sherrington
2010 ◽  
Vol 97-101 ◽  
pp. 1239-1242
Author(s):  
De Liang Liu ◽  
Hui Biao Lu ◽  
C.G. Sun

Piston ring-cylinder is one of the most important friction pair of internal combustion engine,the lubricating state between them has decided internal combustion engine lubrication quality. So the theoretical research to the lubricating characteristics of the piston-ring group, especially the calculation of the lubricating oil film thickness is very important. The oil film thickness between piston-ring and cylinder is studied by calculation method. The calculation program is developed with average Reynolds equation taken the surface topography, viscosity-temperature effect, viscosity-pressure effect, extrusion effect and other factors into account. The position of oil outlet point is preinstalled, the full lubrication is assumed, and the Reynolds equation is solved by full pivot element gausses elimination approach, so the iterative course and calculation workload are reduced, and a great lot of the calculating time is saved, the oil film thickness of full period can be more accurately predicted by the ordinary PC within 30 minutes, which can supply quick effective evidence for next calculation and analysis.


2013 ◽  
Vol 690-693 ◽  
pp. 1999-2002
Author(s):  
Fan Ming Meng ◽  
Tao Yang ◽  
Tao Long

The influence of dimples on the inner surface of big end bearing in internal combustion engine (ICE) on tribological performances of the bearing was investigated based on Navier-Strokes equation and other associated equations. In doing so, the CFD modulus in the software ANSYS12 version is used to analyze the dimple effect on the tribological performances of the bearing using two-way fluid-solid coupling algorithm. Some mechanisms are revealed about the dimple effect on the load-carrying capacity and friction coefficient of oil film, and the deformation and stress for the textured big end bearing.


2019 ◽  
Vol 26 (01) ◽  
pp. 157-162
Author(s):  
Davaasuren G ◽  
Gantulga G

It is vitally important for vehicle users that are to study the operating regime that may negative effect to the operation of the engine, to reduce its effect, to maintain the engine's reliability in accordance with the specific operating conditions. Quality of lubrication is one of the main factors that are improving of reliability and operational efficiency for any machinery their spare parts. So this paper presents to optimize of oil change intervals and to determine of wear rating of spare parts by content of metal particles in the internal combustion engine used oil. Дотоод шаталтат хөдөлгүүрийн тос солих хугацааг оновчлох нь Хураангуй:  Машин ашиглагчдын хувьд тухайн хөдөлгүүрийн ажиллагаанд сөрөг нөлөө үзүүлэх  ашиглалтын горимыг судалж, түүний хор нөлөөг багасгах болон ашиглалтын өвөрмөц  нөхцөлд тохируулан хөдөлгүүрийн найдварт ажиллагааг ханган зөв, ашигтай ажиллуулах  чадвартай байх нь асар их ач холбогдолтой юм. Аливаа машин техник , тэдгээрийн агрегат,  зангилаа эд ангийн удаан эдлэхүй, найдвартай ажиллагааг хангах, ашиглалтын үр ашгийг  дээшлүүлэх гол хүчин зүйлүүдийн нэг нь тосолгооны чанар байдаг учраас дотоод шаталтат  хөдөлгүүрийн ашигласан тосон дахь металлын агууламжыг илрүүлж, эд ангийн элэгдлийн  явцыг тодорхойлон, тос солих хугацааг оновчлох асуудлыг судалгааны хүрээнд авч үзлээ.  Түлхүүр үг: Хөдөлгүүрийн ашигласан тосны шинжилгээ, металл хольц, тосны бохирдол,  тортог, элэгдлийн элементийн хязгаар 


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