会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 7. 发明申请
    • APPROACH FOR DETERMINING EXHAUST GAS SENSOR DEGRADATION
    • 确定排气气体传感器降解的方法
    • US20100242569A1
    • 2010-09-30
    • US12412182
    • 2009-03-26
    • James Michael KernsTimothy Joseph Clark
    • James Michael KernsTimothy Joseph Clark
    • G01M15/10F01N3/00F02D41/00
    • F01N11/007F01N2550/00F01N2560/025F02D41/1454F02D41/1458F02D41/1475F02D41/1495Y02T10/47
    • A method for determining degradation of an exhaust gas sensor positioned in an exhaust system for an internal combustion engine of a vehicle is provided. The method includes modulating an air/fuel ratio of gas exhausted by the internal combustion engine to the exhaust system through a cycle that includes at least one rich-to-lean transition and at least one lean-to-rich transition, indicating a degradation condition of the exhaust gas sensor in response to at least one of a rich-to-lean response duration of the exhaust gas sensor and a lean-to-rich response duration of the exhaust gas sensor being greater than a delay threshold, and indicating the degradation condition of the exhaust gas sensor in response to a ratio of the rich-to-lean response duration to the lean-to-rich response duration being greater than an asymmetry threshold that is relative to an axis of symmetry of the rich-to-lean response duration versus the lean-to-rich response duration.
    • 提供了一种用于确定位于车辆的内燃机的排气系统中的排气传感器的劣化的方法。 该方法包括通过包括至少一个富稀迁移和至少一个富富转换的循环来调节由内燃机排出的气体与排气系统的空燃比,表明降解条件 响应于废气传感器的富稀的响应持续时间和排气传感器的贫 - 富响应持续时间中的至少一个大于延迟阈值,并且指示劣化的废气传感器 响应于贫富响应持续时间与贫富响应持续时间之比的排气传感器的状态大于相对于富 - 贫之间的对称轴的不对称阈值 反应持续时间与贫富比反应持续时间有关。