2차원 다물리 모델 기반 전기가열식 촉매 필터의 구조 및 가열 전략 해석 연구

초록

This numerical study aimed to enhance the design and heating method of an electrically heated catalytic gasoline particulate filter(EH-cGPF) using two-dimensional (2D) multiphysics models. This EH-cGPF incorporated a three-way catalyst(TWC) wash coat on porous substrates with electric heaters positioned between silicon carbide substrate plates, chosen for their high thermal conductivity. Initially, the 2D multiphysics model was validated against experimental results. Subsequently, it was used for a parametric analysis focused on variations in filter layer number, heater power, and heating duration. The analysis revealed that employing a heater power of 4 kW for 40 seconds effectively raised the volume average temperature to 143 °C, achieving a 15-second performance gain compared to configurations without electric heating. This study underscores the potential of optimized heating strategies in enhancing the operational efficiency of EH-cGPF systems. Copyright © 2024 KSAE.

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