پاورپوینت کامل A New Approach to Flow Network Analysis of an Engine Lubrication System 27 اسلاید در PowerPoint

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پاورپوینت کامل A New Approach to Flow Network Analysis of an Engine Lubrication System 27 اسلاید در PowerPoint

اسلاید ۴: Modern engines are being designed to operate at high engine speeds and loads. In order to fulfill the requirements of developing new engines, lubrication system must be improved.Yiqing Yuan et al, in 2007, established a methodology for predicting lubrication flow in the rod bearings and oil circuits that can be used to guide engineering designs.Introduction

اسلاید ۵: Yaguo Lu et al. [10], in 20loped a software for simulating aero-engine lubrication system.In this paper, two important components, chain tensioner and anti-drain valve, have been investigated as well as other components in the lubrication system.Introduction

اسلاید ۶: There are three important reasons for improving the base engine to the modified engine: (1) using inexpensive and locally abundant CNG fuel, (2) demanding higher power and (3) modifying weaknesses of the base engine. The engine parameters are listed in table.Engine description

اسلاید ۷: This test is applicable to Diesel and Gasoline engines.After installing the sensors in particular locations of lubrication circuit like the main gallery, oil pump outlet, oil filter inlet and outlet, the end side of the hydraulic lifter gallery, the engine is configured on the dynamometer and prepared for lubrication functional test. This test is divided into steady state and transient parts.Lubrication functional test

اسلاید ۸: In the steady state part the oil temperature is fixed at 90 and 130 C and for each temperature engine speed is swept from idle to rated speed and data acquisition is performed for each point. In the transient part, on the other hand, the time of delivering oil to different elements in the lubrication circuit is measured.

اسلاید ۹: The Flowmaster is a one-dimensional fluid flow program based on the theory of stream lines. The physical basis for this program comprises empirical and analytical equations for mass, momentum, and energy plus an extensive database to describe the system parts.The flowmaster v7.6 program

اسلاید ۱۰: Bearing calculations are carried out in AVL-EXCITE software by solving the Reynolds equation.The Flowmaster can find the needed oil flow rate of bearings by a simple formula and iterative method. Moreover, this allows the user to supply an oil flow rate map for bearings by supplementary software like AVL-EXCITE.Bearing calculation

اسلاید ۱۱: One of the most important design parameters in bearing design which should always be verified is minimum oil film thickness. Our calculations in AVL-EXCITE software demonstrate that the value of this parameter for all bearings are in the