Diagnostic systems and methods for engine knock sensors
    3.
    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。

    Managing lean air/fuel transients in coordinated torque control
    9.
    发明授权
    Managing lean air/fuel transients in coordinated torque control 失效
    在协调扭矩控制中管理贫气/燃料瞬态

    公开(公告)号:US07748362B2

    公开(公告)日:2010-07-06

    申请号:US12437193

    申请日:2009-05-07

    IPC分类号: F02P5/15

    摘要: An engine control system includes an air control module, a spark control module, a torque control module, a transient detection module, and a launch torque module. The air control module controls a throttle valve of an engine based on a commanded predicted torque. The spark control module controls spark advance of the engine based on a commanded immediate torque. The torque control module increases the commanded predicted torque when a catalyst light-off (CLO) mode is active, and increases the commanded immediate torque when a driver actuates an accelerator input. The transient detection module generates a lean transient signal when an air per cylinder increase is detected while the CLO mode is active. The launch torque module generates a torque offset signal based on the lean transient signal. The torque control module increases the commanded immediate torque based on the torque offset signal.

    摘要翻译: 发动机控制系统包括空气控制模块,火花控制模块,转矩控制模块,瞬态检测模块和发射扭矩模块。 空气控制模块基于指令的预测转矩来控制发动机的节气门。 火花控制模块基于指令的立即扭矩控制发动机的火花提前。 当催化剂熄灭(CLO)模式有效时,转矩控制模块增加指令预测转矩,并且当驾驶员启动加速器输入时增加指令的立即转矩。 当CLO模式有效时,当检测到每缸增加的空气时,瞬态检测模块产生稀薄瞬态信号。 发射扭矩模块基于稀薄瞬态信号产生扭矩偏移信号。 转矩控制模块基于转矩偏移信号增加指令的立即转矩。

    DIAGNOSTIC SYSTEMS AND METHODS FOR ENGINE KNOCK SENSORS
    10.
    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。