Dissertation
Dissertation > Industrial Technology > Energy and Power Engineering > Internal combustion engine > Gasoline > Theory

Numerical Simulation Study on Intake Port of C14D Engine

Author ZhouChangQi
Tutor WeiMingRui
School Wuhan University of Technology
Course Power Machinery and Engineering
Keywords Numerical Simulation Improved inlet Flow Coefficient CFD
CLC TK411
Type Master's thesis
Year 2011
Downloads 111
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In the gasoline engine , the inlet is to determine the coefficient of charge , the process of mixture formation and combustion of the key factors of quality ; into the cylinder in the intake air amount and the resulting flow state is affecting the internal combustion engine power, economy and emissions performance of the main factors . The traditional design flow inlet is experienced steady flow test rig design with repeated tests. In the design and development of the existence of greater blindness and limitations , not only design and development cycle is long, consuming large and difficult to get the ideal solution. The gas flows through the inlet of the three-dimensional numerical simulation , the flow coefficient obtained , airway pressure, flow rate and other parameters of the spatial distribution and shape , airway , mounting position and the gas flow characteristics ( including flow coefficient, etc. ) relationship for automotive engine intake and exhaust channels provide the basis for design and improvement . This research work : 1. Summarizes the development of methods gasoline engine inlet fluid followed by physical laws and mathematical models related theories . (2) the use of 3D modeling software UG, established a solid model. 3 Use FIRE, including the establishment of the airway - valve - cylinder including a computational mesh . 4 Use the FIRE three-dimensional simulation . Computer simulation outlet channel flow coefficient , the intake flow velocity field , pressure field and roll trace diagrams and three-dimensional flow simulation results . 5 Comparison of different turbulence models for simulation results. 6 on the basis of the original model , and the combustion chamber to change the angle airway model , comparing the simulation results before and after improvement . The significance of this paper : CFD simulation through the inlet , the inlet structure obtained on the flow coefficient of the law , and the use of CAD / CFD means of combining analyzes tangential airway and Punta shaped combustion chamber angle changes a gasoline engine inlet flow field .

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