Numerical Simulation of Emission Characteristics for Single-Cylinder Diesel Engine
- 1 College of Automotive Engineering, Shanghai University of Engineering and Science, Shanghai, China
- 2 College of Mechanical Engineering, Shanghai University of Engineering and Science, Shanghai, China
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 CO 2 ), and separately using EGR would be studied. It is concluded that EGR synergy oxygen-enriched combustion is beneficial to exhaust treatment and 21% CO 2 + 23% oxygen content is the optimal matching to improve diesel engine exhaust emissions.
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