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Showing Abstract of The Effects of Inlet Valve Lift Profile Variation on Volumetric Efficiency and In-Cylinder Turbulence Characteristics in a Heavy Duty Diesel Engine

 
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[ Abstract Viewed: 1005 | Pages: 10 ]

Title

The Effects of Inlet Valve Lift Profile Variation on Volumetric Efficiency and In-Cylinder Turbulence Characteristics in a Heavy Duty Diesel Engine

Topic: Computational Mechanics - Simulation and Optimization Published Year: 1387
Presentation:
Published in:

[ 16th Annual Conference of Mechanical Engineering ]

Original Language: English Full Text Size: Not Available

 

Abstract of the Article

 

Note: English CIVILICA is in its Trial Period so Full Texts can not be provided! Persian users can download it here

Download This article in PDF format The Effects of Inlet Valve Lift Profile Variation on Volumetric Efficiency and In-Cylinder Turbulence Characteristics in a Heavy Duty Diesel Engine

 

Authors:

[ Mohammad hasan Shojaeefard ] - Professor –Iran University of Science and Technology
[ Alireza Noorpoor ] - Assistant Professor –Iran University of Science and Technology
[ Mehdi Sadegh kazemi ] - Post graduate student-Automotive Department - Iran University of Science and Technology

 

Abstract:

As turbulence has a significant effect on combustion, affecting ignition delay, combustion duration and emission level, the effects of valve lift profile variations on in-cylinder turbulence are investigated in this study. Volumetric efficiency is also studied as a determining factor on engine break power. The influence of five different cases i.e. fast lift, slow lift, sinus lift, flat lift and diminished flat lift are analyzed. The engine is a turbocharged heavy duty diesel engine with about 10 liter per cylinder swept volume. The aim of the research is to improve the performance of the engine, which is under studying. The mesh generation and CFD calculation are accomplished using ICEM-CFD package and KIVA-3V code. To keep a perfect match between engine geometry and KIVA-3V, some modifications are made on the code. Also, to trust the reliability of the results, the grid independency and validation are accomplished using different grids and experimental data. The results revealed that the valve lift profile variation has a profound effect on in-cylinder turbulence but a slight effect on volumetric efficiency. Also volumetric efficiency and in-cylinder turbulence do not show the same trend to the valve lift profile variation.

 

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