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The Simulation on Gasoline Engine of the Movement of the Air-fuel Mixture by Lean Combustion Technique

Author: ZhuYunLong
Tutor: LiZhiJun
School: Tianjin University
Course: Power Machinery and Engineering
Keywords: Lean burn Steady flow test rig STAR-CD Inlet Numerical Simulation
CLC: TK411.1
Type: Master's thesis
Year: 2010
Downloads: 118
Quote: 3
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Abstract


With the energy and the increasingly serious environmental problems , the development of the automotive industry is facing unprecedented challenges. Lean-burn engine technology not only can effectively reduce fuel consumption and reduce greenhouse gas emissions , but also can significantly reduce HC and CO emissions. In this paper, a CA3GA2 four -valve electronically controlled fuel injection engine , through its inlet for CFD simulation analysis, on how to achieve lean , carried out relevant research . This paper describes the internal combustion engine cylinder air movement and its impact on the combustion process , recognizing the lean burn engine technology for improving the economy and emissions of many advantages, for further simulation and experimental study provides a theoretical basis . Learn CFD theory and current situation in mastering mass, momentum and energy conservation such as the three major theoretical basis of the premise, such as the use of STAR-CD CFD software for simulation of flow field performance . In this paper, modeling , numerical simulation method of the engine intake manifold , inlet and the coupled analysis of the situation , and through the steady flow test on the computer simulation results are verified . Subjects using STAR-CD software for steady flow test rig conditions and cylinder gas inlet flow three-dimensional numerical simulation, through meshing, boundary conditions and other steps to get the flow field analysis chart . Analysis of airway - cylinder flow field characteristics , indicating the engine inlet valve lift under different flow coefficient higher intake better, cylinder tumble motion evident , indicating inlet structure is more reasonable .

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CLC: > Industrial Technology > Energy and Power Engineering > Internal combustion engine > Gasoline > Theory > General thermodynamic problem
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