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© 2019. This work is licensed under https://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.

Abstract

Besides the previous considerations, for the volume variation due to geometrical clearances, it was assumed that the lubricating film obeys the theory of hydrodynamic lubrication [17]. [...]a laminar flow for the film was assumed, the viscosity of the fluid is considered constant, and the inertial effects, as well as the direct contact between components, are ignored, leaving only the hydrodynamic behavior of the fluid. [...]the expressions obtained will be unified in systems of linear equations in order to find the required unknowns. [...]the film height expression has the following structure [26]: h=e·cosσ+Ra·cosδ−Rb Equation (24) fulfills the objective of providing an expression for the film height. Because of this, trigonometric relations from (25) are used to obtain (26), esinδ=Rasinσ h=C(ε·cosσ+1) In the literature, it is common to find the mathematical modeling of the parameters necessary for the design of a radial short bearing, such as the load capacity that the film can withstand without breaking, and the position of the locus with the smallest film size (which corresponds to the position of the center line). [...]of the above, it is assumed that the behavior of the lubricating film is a factor required to calculate the overall variation of the free height of the piston, and hence the instantaneous volume variation in the combustion chamber.

Details

Title
Instantaneous in-Cylinder Volume Considering Deformation and Clearance due to Lubricating Film in Reciprocating Internal Combustion Engines
Author
Consuegra, Franklin; Bula, Antonio; Wilson Guillín; Sánchez, Jonathan; Jorge Duarte Forero
Publication year
2019
Publication date
Feb 2019
Publisher
MDPI AG
e-ISSN
19961073
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2316759366
Copyright
© 2019. This work is licensed under https://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.