ENGINE KNOCK DIAGNOSTIC
    2.
    发明申请
    ENGINE KNOCK DIAGNOSTIC 有权
    发动机锁定诊断

    公开(公告)号:US20090276147A1

    公开(公告)日:2009-11-05

    申请号:US12269346

    申请日:2008-11-12

    IPC分类号: F02D45/00

    摘要: A knock diagnostic module having a knock module that increments a sample count when a cylinder firing signal corresponding to a first cylinder is received and selectively increments a knock count based on a knock detection signal that corresponds to the cylinder firing signal of the first cylinder A knock analysis module analyzes the knock count of the first cylinder when the sample count of the first cylinder reaches a predetermined value and selectively generates an excessive knock signal when the knock count exceeds a predetermined threshold. A remedial action module selectively performs a remedial action based on the excessive knock signal.

    摘要翻译: 一种敲击诊断模块,具有敲击模块,当接收到与第一气缸相对应的气缸触发信号时,增加抽样计数,并且基于与第一气缸A的气缸触发信号相对应的爆震检测信号选择性地增加爆震计数 当第一气缸的样本计数达到预定值时,分析模块分析第一气缸的敲击数,并且当爆震计数超过预定阈值时选择性地产生过大的爆震信号。 补救动作模块基于过度的敲击信号选择性地执行补救动作。

    Diagnostic systems and methods for engine knock sensors
    5.
    发明授权
    Diagnostic systems and methods for engine knock sensors 有权
    发动机爆震传感器的诊断系统和方法

    公开(公告)号:US07769536B2

    公开(公告)日:2010-08-03

    申请号:US12391479

    申请日:2009-02-24

    IPC分类号: F02P5/15

    摘要: An engine control system includes a digital signal processing (DSP) module that generates a fast Fourier transform (FFT) of an engine knock signal generated by an engine knock sensor. An intensity determination module determines an engine knock intensity based on one of a maximum of and an average of the FFT. A status determination module determines a status of the engine knock sensor based on the engine knock intensity, a plurality of predetermined knock intensity thresholds, and a rotational speed of an engine crankshaft.

    摘要翻译: 发动机控制系统包括产生由发动机爆震传感器产生的发动机爆震信号的快速傅里叶变换(FFT)的数字信号处理(DSP)模块。 强度确定模块基于FFT的最大值和平均值之一来确定发动机爆震强度。 状态确定模块基于发动机爆震强度,多个预定爆震强度阈值和发动机曲轴的转速来确定发动机爆震传感器的状态。

    DIAGNOSTIC SYSTEMS AND METHODS FOR ENGINE KNOCK SENSORS
    6.
    发明申请
    DIAGNOSTIC SYSTEMS AND METHODS FOR ENGINE KNOCK SENSORS 有权
    发动机感应传感器的诊断系统和方法

    公开(公告)号:US20100168991A1

    公开(公告)日:2010-07-01

    申请号:US12391479

    申请日:2009-02-24

    IPC分类号: F02D41/04

    摘要: An engine control system includes a digital signal processing (DSP) module that generates a fast Fourier transform (FFT) of an engine knock signal generated by an engine knock sensor. An intensity determination module determines an engine knock intensity based on one of a maximum of and an average of the FFT. A status determination module determines a status of the engine knock sensor based on the engine knock intensity, a plurality of predetermined knock intensity thresholds, and a rotational speed of an engine crankshaft.

    摘要翻译: 发动机控制系统包括产生由发动机爆震传感器产生的发动机爆震信号的快速傅里叶变换(FFT)的数字信号处理(DSP)模块。 强度确定模块基于FFT的最大值和平均值之一来确定发动机爆震强度。 状态确定模块基于发动机爆震强度,多个预定爆震强度阈值和发动机曲轴的转速来确定发动机爆震传感器的状态。