TITLE:
Numerical Simulation of Emission Characteristics for Single-Cylinder Diesel Engine
AUTHORS:
Changwei Ding, Weijun Liu
KEYWORDS:
Single-Cylinder Diesel Engine, EGR, Oxygen-Enriched Combustion, Numerical Simulation
JOURNAL NAME:
Energy and Power Engineering,
Vol.8 No.2,
February
25,
2016
ABSTRACT: First, the geometry model and the calculation mesh of single-cylinder direct injection diesel engine are built, using ESE module of the 3D simulation software AVL FIRE v2014 [1]. Then, by setting appropriate boundary condition, initial condition and calculating step length, and selecting spray, the burning emissions on model and on the basis of adjusting the parameters, a scientific and reasonable simulation platform is built. Emission characteristics of single-cylinder diesel engines in oxygen-enriched, oxygen-enriched + EGR (inlet adding CO2), and separately using EGR would be studied. It is concluded that EGR synergy oxygen-enriched combustion is beneficial to exhaust treatment and 21% CO2 + 23% oxygen content is the optimal matching to improve diesel engine exhaust emissions.