高响应性空燃比传感器的开发  

Development of High Response A/F Sensor

作　　者：苏振洲 今村宏男 梶山理一 中藤充伸 

机构地区：[1]株式会社电装,日本爱知县刈谷市昭和町1-1,448-8661

出　　处：《汽车工程》2011年第10期911-913,共3页Automotive Engineering

摘　　要：作为汽车发动机控制系统的主要部件,空燃比传感器的响应性对燃油喷射控制的影响很大。为提高空燃比传感器的响应性,分别通过数值模拟和试验,对传感器感测元件的性状进行了研究。结果表明,感测元件的扩散层对传感器响应时间的影响最大,使用5～10μm孔径的多孔固体并增加其孔隙率,可在保证温度稳定性的同时提高其响应性。The responsiveness of A/F sensor,a major component in automotive engine management system,has a significant effect on fuel injection control.For enhancing the responsiveness of sensor,both numerical simulation and tests are conducted respectively to investigate the behavior of sensing elements in A/F sensor.The results show that the diffusion layer of sensing element has a most important effect on the response time of sensor.Using a porous diffusion layer with 5 to 10 μm pore diameter and high porosity can effectively improve the responsiveness of A/F sensor while ensuring its temperature stability.

关 键 词：发动机控制系统 空燃比传感器 感测元件 响应性 扩散层 

分 类 号：U464.13[机械工程—车辆工程]