摘要
基于某1.5L自然吸气汽油发动机,建立了歧管式催化转化器三维数值模型,采用计算流体力学方法分析了氧传感器位置对其周围流场分布的影响。通过调整氧传感器座面位置,使氧传感器位于排气主流区域,且载体前均匀性系数显著提高,均满足了设计要求。
A three-dimensional numerical model of manifold catalytic converter was developed based on a 1.5 liter naturally aspirated gasoline engine. Employing the computational fluid dynamics method, the influence of the oxygen sensor position on the flow field around was calculated. Following the calculation results, the oxygen sensor position was optimized. The sensor was finally located in the core area of exhaust flow, and the uniform coefficient of front of subtract was improved significantly, which meted the design requirement.
作者
解亮
欧力郡
南出勇
黄保科
赵真真
XIE Liang;OU Lijun;NAN Chuyong;HUANG Baoke;ZHAO Zhenzhen(Anhui Jianghuai Automobile Group Co., Ltd., Hefei 230601)
出处
《内燃机》
2019年第5期1-4,共4页
Internal Combustion Engines
关键词
排气系统
氧传感器
计算流体力学
均匀性系数
exhaust system
oxygen sensor
computational fluid dynamics
uniform coefficient
