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    METHOD FOR ON-LINE ADAPTATION OF ENGINE VOLUMETRIC EFFICIENCY USING A MASS AIR FLOW SENSOR
    5.
    发明申请
    METHOD FOR ON-LINE ADAPTATION OF ENGINE VOLUMETRIC EFFICIENCY USING A MASS AIR FLOW SENSOR 审中-公开
    使用大气流量传感器在线调节发动机体积效率的方法

    公开(公告)号：US20090049897A1

    公开(公告)日：2009-02-26

    申请号：US11844781

    申请日：2007-08-24

    申请人： Peter M. Olin ,  Sergio Quelhas ,  Koon Chul Yang ,  Sergio E. Garcia

    发明人： Peter M. Olin ,  Sergio Quelhas ,  Koon Chul Yang ,  Sergio E. Garcia

    IPC分类号： G01L3/26 ,  G01M15/04

    CPC分类号： G01M15/042 ,  F02D41/185 ,  F02D41/187 ,  F02D41/2451

    摘要： An electronic engine controller is configured to execute a process of adapting a base value of the volumetric efficiency of an engine through the addition of a correction value of the volumetric efficiency. The process includes comparing an estimated mass air flow value calculated using a speed-density equation, with an actual mass air flow value measured by a mass air flow (MAF) sensor. A percentage error of the estimated mass air flow value as compared to the actual mass air flow value is calculated. When the percentage error indicates that the air flow is at steady state, then the process updates the VE correction value, by integrating the percentage error. The new correction value, thus computed, is then stored in a cell of an array corresponding to the current engine operating condition. The process is configured to add the correction value to the corresponding base value to produce an updated value of the VE, valid for that operating condition. The process accommodates changes in the volumetric efficiency of the engine due to part aging and deposit build-up over time, among other things. The updated VE value may then be used for mass air flow estimation and accordingly for fueling control as well.

    摘要翻译： 电子发动机控制器被配置为执行通过添加容积效率的校正值来适配发动机的容积效率的基值的过程。 该方法包括将使用速度密度方程计算出的估计质量空气流量值与通过质量空气流量（MAF）传感器测量的实际质量空气流量值进行比较。 计算与实际质量空气流量值相比的估计质量空气流量值的百分比误差。 当百分比误差表示气流处于稳定状态时，过程通过积分百分比误差来更新VE校正值。 这样计算的新的校正值然后被存储在与当前发动机工作条件相对应的阵列的单元中。 该过程被配置为将校正值添加到相应的基本值以产生对于该操作条件有效的VE的更新值。 该过程适应了随着时间的推移，部分老化和沉积物堆积造成的发动机容积效率的变化等等。 然后，更新的VE值可以用于质量空气流量估计，并且因此也用于加油控制。

    Cam phasing system with mid-range engine shutdown
    6.
    发明申请
    Cam phasing system with mid-range engine shutdown 审中-公开
    凸轮定相系统具有中档发动机停机功能

    公开(公告)号：US20070251474A1

    公开(公告)日：2007-11-01

    申请号：US11415333

    申请日：2006-05-01

    申请人： Daniel Gauthier ,  Michael Kozan ,  John Waller ,  Daniel Moreno ,  Sergio Quelhas

    发明人： Daniel Gauthier ,  Michael Kozan ,  John Waller ,  Daniel Moreno ,  Sergio Quelhas

    IPC分类号： F01L1/34

    CPC分类号： F01L1/3442 ,  F01L1/024 ,  F01L2001/34426 ,  F01L2001/3443 ,  F01L2001/34459 ,  F01L2001/34473 ,  F01L2101/00 ,  F01L2820/041 ,  F01L2820/042

    摘要： A camshaft phaser system includes an oil control spool valve having two opposing springs to center the spool at a rest position to lock the phaser rotor by blocking supply/vent to both the C1 and C2 chambers, obviating a conventional locking pin mechanism. A double-acting solenoid actuator moves the spool to first and second positions, supplying or venting C1 and C2, respectively. The rotor may be locked hydraulically at any position between full advance and full retard. A system for monitoring the rotational positions of the crankshaft and camshaft includes magnets disposed on opposite sides of the shaft axis. A magnetic sensing element senses the rotational direction of the magnetic field for each position of the shaft. An engine control module uses the position signal and an algorithm to lock the rotor at a desired position.

    摘要翻译： 凸轮轴相位器系统包括油控滑阀，其具有两个相对的弹簧，以使阀芯处于静止位置，以通过阻止C 1和C 2室的供应/排气来锁定相位器转子，从而消除常规的锁定销机构。 双作用电磁阀执行器将阀芯移动到第一和第二位置，分别供应或排放C 1和C 2。 转子可以液压地锁定在完全提前和完全延迟之间的任何位置。 用于监测曲轴和凸轮轴的旋转位置的系统包括设置在轴轴线的相对侧上的磁体。 感测元件感测轴的每个位置的磁场的旋转方向。 发动机控制模块使用位置信号和算法将转子锁定在期望的位置。

    Control method for a direct injection gas engine with fuel vapor purging
    7.
    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

    申请人： Andrew P. Bagnasco ,  Michael J. Steckler ,  Sergio Quelhas ,  Derk Geurts

    发明人： Andrew P. Bagnasco ,  Michael J. Steckler ,  Sergio Quelhas ,  Derk Geurts

    IPC分类号： F02B1700

    CPC分类号： F02D41/3023 ,  F02B2075/125 ,  F02D41/0032 ,  F02D41/0042 ,  F02D41/0045 ,  F02D41/2432 ,  F02D41/2441 ,  F02D41/2454 ,  F02D41/3029 ,  F02M25/08 ,  Y02T10/123

    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。

    Crank signal error detection using a cam signal interval
    8.
    发明授权
    Crank signal error detection using a cam signal interval 有权
    使用凸轮信号间隔的曲轴信号错误检测

    公开(公告)号：US08978453B2

    公开(公告)日：2015-03-17

    申请号：US13445471

    申请日：2012-04-12

    申请人： Salem Ahmad Fayyad ,  Andy Tenka ,  Sergio Quelhas

    发明人： Salem Ahmad Fayyad ,  Andy Tenka ,  Sergio Quelhas

    IPC分类号： G01M15/00 ,  G01M15/06

    CPC分类号： G01M15/06

    摘要： A method of detecting a crank signal error that includes incrementing a crank tooth counter in response to detecting a crank signal, comparing the crank tooth counter to an expected value when a cam signal is detected, and indicating a crank signal error if the crank tooth counter is not substantially equal to the expected value. This method is advantageous because a cam interval used to determine when to start and stop counting crank tooth pulses is automatically adjusted for variations in engine speed, while the prior art time based methods must adjust the time interval for variations in engine speed.

    摘要翻译： 一种检测曲柄信号误差的方法，包括响应于检测到曲柄信号而增加曲柄齿计数器，当检测到凸轮信号时将曲柄齿计数器与期望值进行比较，并且如果曲柄齿计数器 基本上不等于预期值。 该方法是有利的，因为用于确定启动和停止计数曲柄齿脉冲的凸轮间隔是自动调节发动机转速的变化，而现有技术的基于时间的方法必须调整发动机转速变化的时间间隔。

    Cam phasing system with mid-range engine shutdown
    9.
    发明申请
    Cam phasing system with mid-range engine shutdown 审中-公开
    凸轮定相系统具有中档发动机停机功能

    公开(公告)号：US20080136404A1

    公开(公告)日：2008-06-12

    申请号：US12069476

    申请日：2008-02-11

    申请人： Daniel G. Gauthier ,  Michael A. Kozan ,  John H. Waller ,  Daniel J. Moreno ,  Sergio Quelhas

    发明人： Daniel G. Gauthier ,  Michael A. Kozan ,  John H. Waller ,  Daniel J. Moreno ,  Sergio Quelhas

    IPC分类号： G01B7/30

    CPC分类号： F01L1/3442 ,  F01L1/024 ,  F01L2001/34426 ,  F01L2001/3443 ,  F01L2001/34459 ,  F01L2001/34473 ,  F01L2101/00 ,  F01L2820/041 ,  F01L2820/042

    摘要： A camshaft phaser system includes an oil control spool valve having two opposing springs to center the spool at a rest position to lock the phaser rotor by blocking supply/vent to both the C1 and C2 chambers, obviating a conventional locking pin mechanism. A double-acting solenoid actuator moves the spool to first and second positions, supplying or venting C1 and C2, respectively. The rotor may be locked hydraulically at any position between full advance and full retard. A system for monitoring the rotational positions of the crankshaft and camshaft includes magnets disposed on opposite sides of the shaft axis. A magnetic sensing element senses the rotational direction of the magnetic field for each position of the shaft. An engine control module uses the position signal and an algorithm to lock the rotor at a desired position.

    摘要翻译： 凸轮轴相位器系统包括一个油控滑阀，具有两个相对的弹簧，以使阀芯处于静止位置，以便通过阻止C1和C2两个腔室的供应/排气来锁定相位器转子，从而避免了常规的锁定销机构。 双作用电磁阀执行器将阀芯移动到第一和第二位置，分别供应或排出C1和C2。 转子可以液压地锁定在完全提前和完全延迟之间的任何位置。 用于监测曲轴和凸轮轴的旋转位置的系统包括设置在轴轴线的相对侧上的磁体。 感测元件感测轴的每个位置的磁场的旋转方向。 发动机控制模块使用位置信号和算法将转子锁定在期望的位置。