Enhanced real-time ammonia slip detection
    5.
    发明授权
    Enhanced real-time ammonia slip detection 有权
    增强型实时氨滑移检测

    公开(公告)号:US09381468B2

    公开(公告)日:2016-07-05

    申请号:US14248875

    申请日:2014-04-09

    Abstract: Systems and methods for detecting ammonia slip in an exhaust system based upon transient NOx sensor responses are described. In one example method, an exhaust system allocates tailpipe NOx sensor output to NOx and NH3 levels responsive to the transient sensors using a segment length method that processes the transient signals based on the total segment lengths calculated within a window. A ratio of segment lengths relative to a threshold is determined for a measured and expected NOx rate of change downstream of an SCR that is further used to determine a probability of NOx and NH3 based on the measured sensor activities, and a controller is included to adjust one or more parameters based on the allocation and changes of sensor output.

    Abstract translation: 描述了基于瞬态NOx传感器响应来检测排气系统中氨滑移的系统和方法。 在一个示例性方法中,排气系统使用使用基于在窗口内计算的总段长度来处理瞬态信号的段长度方法来响应于瞬态传感器而将尾管NOx传感器输出分配给NO x和NH 3水平。 确定段长度相对于阈值的比率,用于SCR的下游的测量和预期的NOx变化率,其进一步用于基于测量的传感器活动来确定NOx和NH 3的概率,并且包括控制器以调整 基于传感器输出的分配和变化的一个或多个参数。

    ENHANCED REAL-TIME AMMONIA SLIP DETECTION
    6.
    发明申请
    ENHANCED REAL-TIME AMMONIA SLIP DETECTION 有权
    增强实时氨基酸检测

    公开(公告)号:US20140301925A1

    公开(公告)日:2014-10-09

    申请号:US14248875

    申请日:2014-04-09

    Abstract: Systems and methods for detecting ammonia slip in an exhaust system based upon transient NOx sensor responses are described. In one example method, an exhaust system allocates tailpipe NOx sensor output to NOx and NH3 levels responsive to the transient sensors using a segment length method that processes the transient signals based on the total segment lengths calculated within a window. A ratio of segment lengths relative to a threshold is determined for a measured and expected NOx rate of change downstream of an SCR that is further used to determine a probability of NOx and NH3 based on the measured sensor activities, and a controller is included to adjust one or more parameters based on the allocation and changes of sensor output.

    Abstract translation: 描述了基于瞬态NOx传感器响应来检测排气系统中氨滑移的系统和方法。 在一个示例性方法中,排气系统使用使用基于在窗口内计算的总段长度来处理瞬态信号的段长度方法来响应于瞬态传感器而将尾管NOx传感器输出分配给NO x和NH 3水平。 确定段长度相对于阈值的比率,用于SCR的下游的测量和预期的NOx变化率,其进一步用于基于测量的传感器活动来确定NOx和NH 3的概率,并且包括控制器以调整 基于传感器输出的分配和变化的一个或多个参数。

    BATTERY ARRANGEMENTS WITH SUPERCOOLED PHASE CHANGE MATERIALS

    公开(公告)号:US20250087782A1

    公开(公告)日:2025-03-13

    申请号:US18463524

    申请日:2023-09-08

    Inventor: Minghong Liu Hao Wu

    Abstract: A PCM with supercooling function may be used to release heat to warm a battery prior to fast charging by triggering a solidifying phase change in the PCM with supercooling function. A battery temperature management system may include a PCM with supercooling function in a temperature-modulating cell to supply heat to a battery prior to fast charging and to absorb heat during fast charging. A vehicle may include a battery and a PCM with supercooling function in a temperature-modulating cell to supply heat to the battery prior to fast charging and to absorb heat during fast charging.

Patent Agency Ranking