Large Eddy Simulations of the fuel injection and mixing process of the ECN GDi Injector Spray G

Jaime Gimeno,María Martínez,Pedro Martí-Aldaraví,Raul Payri

doi:10.2218/iclass.2021.5874

Abstract

Large Eddy Simulations of the fuel injection and mixing process of the ECN GDi Injector Spray G

Highlights

The evolution of the automotive industry has been part of the causes of the climate change and stringent emission regulations that have emerged
The Engine Combustion Network (ECN), an international network of researchers working in the field of sprays and combustion in Internal Combustion Engines (ICEs), made available a multi-orifice injector known as Spray G
It is important to note that the computationally obtained mass flow rate profiles have been generated by measuring the value in perpendicular planes to the counterbored orifices

Summary

Introduction

The evolution of the automotive industry has been part of the causes of the climate change and stringent emission regulations that have emerged. Within the concept of cleaner and more efficient transport, the importance of liquid atomization and mixture formation in reducing emissions and achieving high efficiency in spark ignited (SI) engines is highlighted. For this purpose, the technology of Gasoline Direct injection (GDi), which stands out in terms of reducing harmful emissions, is gaining interest and is the main focus of the article. The Engine Combustion Network (ECN), an international network of researchers working in the field of sprays and combustion in Internal Combustion Engines (ICEs), made available a multi-orifice injector known as Spray G The aim of this group is to share the findings of their studies and facilitate the understanding of the phenomena that take place in the injection process and that significantly affect the engine performance. It is worth mentioning the efforts made to estimate certain macroscopic and microscopic parameters such as spray shape, jet penetration, axial velocity at the centre of the discharge volume and particle diameter, among others [4]

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Conclusion