Method and system for fuel injection control to reduce variation
    2.
    发明授权
    Method and system for fuel injection control to reduce variation 有权
    燃料喷射控制的方法和系统,以减少变化

    公开(公告)号:US08364380B2

    公开(公告)日:2013-01-29

    申请号:US12540744

    申请日:2009-08-13

    IPC分类号: F02D41/30

    摘要: A method and system for controlling an engine includes a desired fuel mass determination module that determines fuel mass for injection into a cylinder. The system also includes a split determination module that splits the fuel mass into split fuel masses and a pulsewidth determination module that converts the split fuel masses into injection pulsewidths outside of an injector operation exclusion zone.

    摘要翻译: 用于控制发动机的方法和系统包括确定用于喷射到气缸中的燃料质量的期望燃料质量确定模块。 该系统还包括将燃料块分成分开的燃料块的分割确定模块和将分离的燃料质量转换成喷射器操作排除区域之外的喷射脉冲宽度的脉冲宽度确定模块。

    Individual cylinder fuel control systems and methods for oxygen sensor degradation
    3.
    发明授权
    Individual cylinder fuel control systems and methods for oxygen sensor degradation 有权
    单独的气缸燃料控制系统和氧传感器降解的方法

    公开(公告)号:US08261727B2

    公开(公告)日:2012-09-11

    申请号:US12898109

    申请日:2010-10-05

    IPC分类号: F02D41/30

    摘要: A system includes an offset determination module and a correction determination module. The offset determination module determines an offset value based on an average response time of an exhaust gas oxygen (EGO) sensor located upstream of a catalyst in an exhaust system. The offset value relates one of a predetermined number of cylinder imbalance values to a cylinder of an engine. The correction determination module determines a fueling correction for the cylinder based on the offset value and one of the predetermined number of cylinder imbalance values.

    摘要翻译: 系统包括偏移确定模块和校正确定模块。 偏移确定模块基于位于排气系统中的催化剂上游的排气氧(EGO)传感器的平均响应时间来确定偏移值。 偏移值将预定数量的气缸不平衡值中的一个与发动机的气缸相关联。 校正确定模块基于偏移值和预定数量的气缸不平衡值中的一个来确定气缸的加油校正。

    CAMSHAFT POSITION MEASUREMENT AND DIAGNOSIS
    4.
    发明申请
    CAMSHAFT POSITION MEASUREMENT AND DIAGNOSIS 有权
    CAMSHAFT位置测量和诊断

    公开(公告)号:US20100263438A1

    公开(公告)日:2010-10-21

    申请号:US12541463

    申请日:2009-08-14

    IPC分类号: G01M15/06

    摘要: A method of operating an engine includes determining a relative position between a first camshaft and a second camshaft during a startup event of the engine when the first camshaft is at a first home position and the second camshaft is at a second home position. The first home position is a first preset angular position of the first camshaft relative to a crankshaft. The second home position is a second preset angular position of the second camshaft relative to the crankshaft when the engine is in an OFF state. The method includes generating a first estimate of the first home position. The method also includes diagnosing a mis-build of the engine based on the relative position, the first estimate and a second estimate of the second home position.

    摘要翻译: 一种操作发动机的方法包括当第一凸轮轴处于第一起始位置并且第二凸轮轴处于第二起始位置时,在发动机的启动事件期间确定第一凸轮轴和第二凸轮轴之间的相对位置。 第一起始位置是第一凸轮轴相对于曲轴的第一预设角位置。 当发动机处于关闭状态时,第二起始位置是第二凸轮轴相对于曲轴的第二预设角位置。 该方法包括产生第一原始位置的第一估计。 该方法还包括基于相对位置,第一估计和第二起始位置的第二估计来诊断发动机的构建错误。

    Control method for a direct injection gas engine with fuel vapor purging
    5.
    发明授权
    Control method for a direct injection gas engine with fuel vapor purging 失效
    具有燃料蒸气吹扫的直喷式发动机的控制方法

    公开(公告)号:US06622691B2

    公开(公告)日:2003-09-23

    申请号:US09950283

    申请日:2001-09-10

    IPC分类号: F02B1700

    摘要: A control method for a direct injection gasoline engine operable in stratified or homogenous combustion modes and having a fuel vapor purge system estimates the hydrocarbon concentration of purge vapor during open loop fuel control in the stratified combustion mode, and controls the fuel injection quantity and the combustion mode based on the estimated concentration. The hydrocarbon concentration of the purge vapor is estimated during open-loop fuel control by measuring the air/fuel ratio error during steady state operation with no fuel vapor purging, and using such air/fuel ratio error to normalize the air/fuel error observed during steady state operation with purge control. The fuel injection quantity is compensated for the estimated purge vapor concentration, and engine combustion mode is determined in part based on a comparison of the estimated concentration with a calibrated threshold.

    摘要翻译: 一种直接喷射汽油发动机的控制方法,其分层或均匀的燃烧模式可操作并且具有燃料蒸汽清除系统以分层燃烧模式估计开环燃料控制期间的净化蒸汽的烃浓度,并且控制燃料喷射量和燃烧 模式基于估计浓度。 在开环燃料控制期间通过在稳态运行期间测量空燃比误差来估计净化蒸汽的碳氢化合物浓度,而不使用燃料蒸汽清除,并且使用这种空/燃比误​​差来标准化在 稳态运行与清除控制。 燃料喷射量被补偿估计的吹扫蒸汽浓度,并且部分地基于估计浓度与校准阈值的比较来确定发动机燃烧模式。

    TECHNIQUES FOR DETECTING SUPERCHARGER BELT SLIP
    6.
    发明申请
    TECHNIQUES FOR DETECTING SUPERCHARGER BELT SLIP 有权
    用于检测超级带皮带的技术

    公开(公告)号:US20140316641A1

    公开(公告)日:2014-10-23

    申请号:US13865384

    申请日:2013-04-18

    IPC分类号: F02D23/00

    摘要: A technique can include receiving, at a controller for a vehicle, the controller including one or more processors, a signal indicative of a pressure in an intake manifold of an engine of the vehicle. The vehicle can include a supercharger configured to supply pressurized air to the intake manifold. The supercharger can be driven by a crankshaft of the engine via a belt. The technique can include estimating, at the controller, a frequency of the signal to obtain an estimated frequency. The technique can include determining, at the controller, whether the belt is slipping based on a comparison between the estimated frequency and a predetermined frequency. The technique can also include outputting, at the controller, a notification when the belt is determined to be slipping.

    摘要翻译: 技术可以包括在车辆的控制器处接收包括一个或多个处理器的控制器,指示车辆发动机的进气歧管中的压力的​​信号。 车辆可以包括配置成向进气歧管供应加压空气的增压器。 增压器可以由发动机的曲轴通过皮带驱动。 该技术可以包括在控制器处估计信号的频率以获得估计的频率。 该技术可以包括在控制器处基于估计频率和预定频率之间的比较确定皮带是否滑动。 该技术还可以包括当控制器确定滑动时在控制器处输出通知。

    DIAGNOSTIC SYSTEM AND METHOD FOR A VARIABLE VALVE LIFT MECHANISM
    8.
    发明申请
    DIAGNOSTIC SYSTEM AND METHOD FOR A VARIABLE VALVE LIFT MECHANISM 有权
    用于可变阀门提升机构的诊断系统和方法

    公开(公告)号:US20130073178A1

    公开(公告)日:2013-03-21

    申请号:US13237441

    申请日:2011-09-20

    IPC分类号: F02D13/02 F02D28/00

    摘要: A system according to the principles of the present disclosure includes a timing control module and a diagnostic module. The timing control module controls engine valve timing by sending fluid to an advancing chamber of a cam phaser to adjust the cam phaser to an advanced position and by sending fluid to a retarding chamber of the cam phaser to adjust the cam phaser to a retarded position. The diagnostic module identifies a fault in a variable valve lift (VVL) mechanism based on a first difference between an advancing pressure of the advancing chamber and a retarding pressure of the retarding chamber.

    摘要翻译: 根据本公开的原理的系统包括定时控制模块和诊断模块。 定时控制模块通过将流体发送到凸轮相位器的推进室来控制发动机气门正时,以将凸轮相位器调整到高级位置,并且通过将流体发送到凸轮移相器的减速室以将凸轮相位器调整到延迟位置。 诊断模块基于前进室的前进压力和延迟室的延迟压力之间的第一差异来识别可变气门升程(VVL)机构中的故障。

    IMBALANCE RE-SYNCHRONIZATION CONTROL SYSTEMS AND METHODS
    9.
    发明申请
    IMBALANCE RE-SYNCHRONIZATION CONTROL SYSTEMS AND METHODS 有权
    不平衡重新同步控制系统和方法

    公开(公告)号:US20130060449A1

    公开(公告)日:2013-03-07

    申请号:US13223887

    申请日:2011-09-01

    IPC分类号: F02D28/00 F02D41/30

    摘要: Fueling to one cylinder of an engine is selectively adjusted based on a correction associated with the cylinder. An instability module increments a counter value when the correction is equal to one of a first predetermined value and a second predetermined value and was previously equal to the other one of the first and second predetermined values. The instability module selectively generates a first indicator based on the counter value. A variance of imbalance values can be determined based on samples of an exhaust gas oxygen signal. Two variances are determined: one variance with adjustment based on the correction, one without adjustment based on the correction. A variance checking module selectively generates a second indicator based on the first and second variances. A re-synchronization module re-synchronizes the imbalance values with the cylinders, respectively, in response to generation of the first indicator and/or the second indicator.

    摘要翻译: 基于与气缸相关联的校正来选择性地调节对发动机的一个气缸的加油。 当校正等于第一预定值和第二预定值中的一个并且先前等于第一和第二预定值中的另一个时,不稳定性模块递增计数器值。 不稳定性模块基于计数器值选择性地生成第一指示符。 可以基于废气氧信号的样本来确定不平衡值的变化。 确定两个方差:一个方差与基于校正的调整,一个不根据校正进行调整。 方差检查模块基于第一和第二方差选择性地生成第二指示符。 响应于第一指示器和/或第二指示器的产生,重新同步模块分别将不平衡值与气缸重新同步。

    Diagnostic systems and methods for sensors in homogenous charge compression ignition engine systems
    10.
    发明授权
    Diagnostic systems and methods for sensors in homogenous charge compression ignition engine systems 有权
    用于均质充气压缩点火发动机系统的传感器的诊断系统和方法

    公开(公告)号:US08255143B2

    公开(公告)日:2012-08-28

    申请号:US12512459

    申请日:2009-07-30

    IPC分类号: G01M15/02 G01M15/00

    摘要: An engine control system for a homogenous charge compression ignition (HCCI) engine includes an airflow determination module and a sensor diagnostic module. The airflow determination module generates a first plurality of estimates of airflow into the HCCI engine when the HCCI engine is operating in a first combustion mode, wherein the first plurality of estimates are based on an intake manifold absolute pressure (MAP), a mass air flow (MAF) rate, and a camshaft position. The sensor diagnostic module determines a state of at least one of a first plurality of sensors based on a predetermined threshold and differences between one of the first plurality of estimates and others of the first plurality of estimates, wherein the first plurality of sensors includes a MAP sensor, a MAF sensor, and a camshaft sensor.

    摘要翻译: 用于均质充气压缩点火(HCCI)发动机的发动机控制系统包括气流确定模块和传感器诊断模块。 当HCCI发动机以第一燃烧模式操作时,气流确定模块产生对HCCI发动机的气流的第一多个估计值,其中第一多个估计值基于进气歧管绝对压力(MAP),质量空气流量 (MAF)速率和凸轮轴位置。 所述传感器诊断模块基于预定阈值来确定第一多个传感器中的至少一个的状态,以及所述第一多个估计中的一个与所述第一多个估计中的另一个之间的差异,其中所述第一多个传感器包括MAP 传感器,MAF传感器和凸轮轴传感器。