Misfire detection in an internal combustion engine
    2.
    发明授权
    Misfire detection in an internal combustion engine 失效
    内燃机失火检测

    公开(公告)号:US06885932B2

    公开(公告)日:2005-04-26

    申请号:US10637121

    申请日:2003-08-08

    CPC classification number: G01M15/11

    Abstract: A method and system for a misfire detection acquires (301) a series of acceleration data (302) representative of acceleration behavior of an engine. The data is sampled (304) to obtain acceleration data samples at a rate sufficient to obtain up to fourth-order perturbations of the data. The samples are filtered (322) to provide bandwidth limited samples, which are provided to at least two channels (325, 329). The samples are pattern matched (332) in a first channel to enhance harmonic phenomena and pattern canceled (330) in a second channel to enhance random phenomena. Hard and random misfires are detected (334) dependent on a magnitude of the filtered acceleration data samples. Preferably, a third channel (335) is added to detect multiple misfires.

    Abstract translation: 用于失火检测的方法和系统获取(301)代表发动机的加速行为的一系列加速度数据(302)。 数据被采样(304)以获得加速度数据样本,其速率足以获得数据的高达四阶扰动。 对样本进行滤波(322)以提供带宽限制的样本,其被提供给至少两个信道(325,329)。 样品在第一通道中被模式匹配(332)以增强第二通道中的谐波现象和模式取消(330),以增强随机现象。 检测到硬和随机的失火(334),这取决于经滤波的加速度数据样本的大小。 优选地,添加第三通道(335)以检测多次失火。

    MISFIRE DETECTION IN AN INTERNAL COMBUSTION ENGINE
    3.
    发明申请
    MISFIRE DETECTION IN AN INTERNAL COMBUSTION ENGINE 失效
    内燃机中的MISFIRE检测

    公开(公告)号:US20050033501A1

    公开(公告)日:2005-02-10

    申请号:US10637121

    申请日:2003-08-08

    CPC classification number: G01M15/11

    Abstract: A method and system for a misfire detection acquires (301) a series of acceleration data (302) representative of acceleration behavior of an engine. The data is sampled (304) to obtain acceleration data samples at a rate sufficient to obtain up to fourth-order perturbations of the data. The samples are filtered (322) to provide bandwidth limited samples, which are provided to at least two channels (325, 329). The samples are pattern matched (332) in a first channel to enhance harmonic phenomena and pattern canceled (330) in a second channel to enhance random phenomena. Hard and random misfires are detected (334) dependent on a magnitude of the filtered acceleration data samples. Preferably, a third channel (335) is added to detect multiple misfires.

    Abstract translation: 用于失火检测的方法和系统获取(301)代表发动机的加速行为的一系列加速度数据(302)。 数据被采样(304)以获得加速度数据样本,其速率足以获得数据的高达四阶扰动。 对样本进行滤波(322)以提供带宽限制的样本,其被提供给至少两个信道(325,329)。 样品在第一通道中被模式匹配(332)以增强第二通道中的谐波现象和模式取消(330),以增强随机现象。 检测到硬和随机的失火(334),这取决于经滤波的加速度数据样本的大小。 优选地,添加第三通道(335)以检测多次失火。

    SYSTEMS AND METHODS FOR OCCUPANT CLASSIFICATION

    公开(公告)号:US20220219571A1

    公开(公告)日:2022-07-14

    申请号:US17610029

    申请日:2020-05-08

    Abstract: An occupant classification system for a seat assembly. The seat assembly includes a seat cushion and a seat back. The system comprises a plurality of sensors, an algorithm, a posture classifier and a weight classification system. Each of the plurality of sensors measures a force applied to the seat cushion and/or seat back by an occupant of the seat assembly. The algorithm monitors a compensation factor and adjusts the forces measured by the plurality of sensors to compensate for the compensation factor. The posture classifier identifies a posture of the occupant based on distribution of the adjusted forces for each of the plurality of sensors. The weight classification system identifies a weight class of the occupant based on the posture and magnitude of the adjusted forces for each of the plurality of sensors.

    Adaptive Control Strategy
    6.
    发明申请
    Adaptive Control Strategy 失效
    自适应控制策略

    公开(公告)号:US20120124967A1

    公开(公告)日:2012-05-24

    申请号:US12953325

    申请日:2010-11-23

    Abstract: A vehicle has an exhaust aftertreatment system including an LNT. The vehicle operates through a series of ignition cycles, deNOX cycles, and deSOX cycles. DeNOX operations begin when the LNT reaches a loading threshold. The applicable threshold depends on operating conditions, such as mean LNT temperature and mean exhaust flow rate. The thresholds are adapted based on NOX removal efficiency data. The data is compared to target values. The target values depend on the operating condition range, but remain fixed while the thresholds are adapted. NOX removal efficiency is measured over intervals corresponding to entire deNOX cycles. The data is sorted into bins according to operating conditions. The adaptations are only made if a bin has several data points accumulated over a minimum interval that is at least one ignition or deSOX cycle, preferably several. The method provides stable adaptations that compensate for aging.

    Abstract translation: 车辆具有包括LNT的排气后处理系统。 车辆通过一系列点火循环,脱硝循环和脱硫循环进行操作。 当LNT达到加载阈值时,DeNOX操作开始。 适用的阈值取决于操作条件,如平均LNT温度和平均排气流量。 基于NOX去除效率数据来调整阈值。 数据与目标值进行比较。 目标值取决于操作条件范围,但在修改阈值时保持固定。 在对应于整个deNOX循环的间隔上测量NO x去除效率。 根据操作条件将数据分类到箱中。 仅当箱体具有在至少一个点火或脱硫循环(最好几个)的最小间隔上积累的几个数据点时进行调整。 该方法提供稳定的适应性,以补偿老化。

    Adaptive control strategy
    7.
    发明授权
    Adaptive control strategy 失效
    自适应控制策略

    公开(公告)号:US08701390B2

    公开(公告)日:2014-04-22

    申请号:US12953325

    申请日:2010-11-23

    Abstract: A vehicle has an exhaust aftertreatment system including an LNT. The vehicle operates through a series of ignition cycles, deNOX cycles, and deSOX cycles. DeNOX operations begin when the LNT reaches a loading threshold. The applicable threshold depends on operating conditions, such as mean LNT temperature and mean exhaust flow rate. The thresholds are adapted based on NOX removal efficiency data. The data is compared to target values. The target values depend on the operating condition range, but remain fixed while the thresholds are adapted. NOX removal efficiency is measured over intervals corresponding to entire deNOX cycles. The data is sorted into bins according to operating conditions. The adaptations are only made if a bin has several data points accumulated over a minimum interval that is at least one ignition or deSOX cycle, preferably several. The method provides stable adaptations that compensate for aging.

    Abstract translation: 车辆具有包括LNT的排气后处理系统。 车辆通过一系列点火循环,脱硝循环和脱硫循环进行操作。 当LNT达到加载阈值时,DeNOX操作开始。 适用的阈值取决于操作条件,如平均LNT温度和平均排气流量。 基于NOX去除效率数据调整阈值。 数据与目标值进行比较。 目标值取决于操作条件范围,但在修改阈值时保持固定。 在对应于整个deNOX循环的间隔上测量NO x去除效率。 根据操作条件将数据分类到箱中。 仅当箱体具有在至少一个点火或脱硫循环(最好几个)的最小间隔上积累的几个数据点时才进行调整。 该方法提供稳定的适应性,以补偿老化。

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