types of lubrication system in ic engines pdf

The engine geometry is represented by a series of blockĮlements and modelled as a nodal resistance network. This program accounts for the heat transfer to the oil splashed on to The engine block temperatures are calculated by theĮngine block program.

The heat transfer to the oil within the pressurised part of the lubrication system is The non-linear solution technique was proven to be robust andįlexible and was subsequently used in all the analysis programs. Non-linear flow characteristics, such as turbulent pipes, annular pipes, strainers, and oilĬoolers, were developed. Solved for the unknowns with an iterative technique. A more comprehensive and flexible non-linear flow model was developed, which The linear program provided a rapid analysis tool, but theĪccuracy of the results were limited by the simplified flow characteristics of the systemĬomponents. Lubrication system components were developed and were implemented in a suite ofįORTRAN computer programs which formed the design analysis package.Ī simple, linear flow model was initially developed to represent the system with aĬombination of laminar pipes, pumps, filters, journal bearings, crank-shaft transfer holesĪnd cam bearing transfer holes. Mathematical models of the thermofluid behaviour of the The objective of this study was to develop a flexible steady-state thermofluid designĪnalysis tool, by integrating a flow analysis approach with a detailed analysis of the heat

Limited heat transfer prediction capabilities, some requiring measured engine temperatureĭata, and were not flexible enough to be employed as design tools.

A small number of computer models wereĭeveloped for the flow analysis of the whole lubrication system. Or the detailed analysis of individual components. Support for the study was provided by Jaguar Cars.Ī comprehensive literature review revealed that the past research in this field hadĬoncentrated on either the thermofluid analysis of the lubrication system by engine testing, Provide a flexible design analysis tool for the accurate prediction of oil pressures, flow ratesĪnd temperatures at any point within any lubrication system. A comprehensive thermofluid computer model was developed to This dissertation documents the thermodynamic and fluid mechanic analysis of anĮngine lubrication system.

Types of lubrication system in ic engines pdf