Affiliation:
1. Technion Israel Institute of Technology, Mechanical
Abstract
<div class="section abstract"><div class="htmlview paragraph">A numerical study of airflow at piston engine ports and the cylinder was
conducted to obtain the swirl ratio and manifold volumetric efficiency. The
mathematical model of the cylinder induction was validated by comparing it with
published experimental data. Swirl ratio and manifold volumetric efficiency were
analyzed using computational fluid dynamics (CFD) modeling of cylinder induction
and compression strokes. The effects of charge pressure, engine speed, and
charge air temperature on swirl ratio were studied. It was also found that the
swirl ratio slightly increases as inlet air temperature and pressure grow, and
it linearly decreases as engine speed rises. Furthermore, it was found that
vortex speed is proportional to the power of 0.9 of the engine speed. The
reasons for the changing swirl ratio and manifold volumetric efficiency were
researched.</div></div>
Reference16 articles.
1. Kavtaradze , R.Z.
Piston Engines Theory Moscow Bauman University
Publishing House 2016 978-5-7038-4117-4
2. Galgovkiy , V.R.
Determination of the Air Charge Tangential
Velocity at Direct Injection Diesel Engine Combustion
Chamber NAMI Works 119 1969 56 75
3. Oh , D.S. and
Lee , C.H.
Development of a New System for Measuring the
Swirl Ratio of an Engine Cylinder Head under an Unsteady Flow
Condition Journal of Mechanical Science and
Technology 33 2019 955 965 10.1007/s12206-019-0152-1
4. Oghabneshin ,
Y. ,
Seddighi ,
S. ,
Zabetian , M.
et al.
Experimental and Numerical Analysis of the
In-Cylinder Swirl Flow Dependence on the Pressure Heat Mass Transfer 54 2018 3547 3558 https://doi.org/10.1007/s00231-018-2384-5
5. Jena , A. ,
Singh , H. ,
and
Agarwal , A.K.
Effect of Swirl Ratio on Charge Convection,
Temperature Stratification, and Combustion in Gasoline Compression Ignition
Engine Phys. Fluids 33 2021 085113 https://doi.org/10.1063/5.0059579