A CFD Method for Lubrication Circuits has been presented. The Method is able to map the behavior of Lubrication Circuits, this gives opportunity to assess the performance of lubrication, identifying the critical operating conditions and improve design process through virtual optimization. Assuring the correct lubrication distribution improves energy management, increases machine and components reliability and lifetime reducing the failures. The main physical phenomena involved were described, moreover an aggregated data analysis was carried out to manage the vast data collected and to illustrate the various trends and dependency from operative conditions. Going into details the centrifugal effect is important at low pressure drops and tend to be in favor of outlets nearest to inlet; at high pressure drops and medium and high temperature the flow balance is satisfactory; at low temperatures a laminar behavior is shown, the total flow rate falls dramatically and moreover the flow path isn't able to lubricate the end part of the shaft. The method has shown the capability to describe the global system behavior through simple models opening the possibility to deal with a complete lubrication system analyzing the various parts and building a concentrated parameters global model. This is an important achievement since it is nowadays impossible to study a modern off road machine lubrication system in his entirety for the extreme complexity and extent of fluid domain. This results encourage the development of CFD simulation in the field of Transmission Lubrication as an integrated part of machine development giving opportunity to optimize and speed up the design process.
Methods of Computational Fluid Dynamics for a CVT Transmission Lubrication System of Agricultural Tractor
2014
12 Seiten, Bilder, Tabellen, 18 Quellen
Aufsatz (Konferenz)
Englisch
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Engineering Index Backfile | 1938