Improved design of front intake system of three-way catalytic converter

In order to improve the conversion performance of the three-way catalytic converter, this paper establishes the physical model and simulation model of the entire three-way catalytic converter and the front intake system. Based on CFD theory and exhaust system theory, the system has been improved design and simulation analysis. The simulation results show that after the front intake system is improved, the pressure loss at the front intake of the three-way catalytic converter is reduced to 1400Pa, the total pressure drop is reduced to 6700Pa, and the total pressure drop is reduced by 800Pa compared with the original total pressure drop, and the airflow velocity direction is more gentle. The intake air volume is significantly increased, effectively improving the conversion performance of the three-way catalytic converter, and verifying the rationality of the improved design.