LPP combustion control for IC engine with abnormal combustion
    31.
    发明授权
    LPP combustion control for IC engine with abnormal combustion 失效
    具有异常燃烧的IC发动机的LPP燃烧控制

    公开(公告)号:US4711215A

    公开(公告)日:1987-12-08

    申请号:US923577

    申请日:1986-10-27

    IPC分类号: F02P5/145 F02P5/15

    CPC分类号: F02P5/1455 Y02T10/46

    摘要: An LLP ignition timing control for an internal combustion engine periodically senses LPP in an engine combustion chamber and generates an average LPP value. A DLPP value indicating a desired LPP is generated; and ignition timing is periodically adjusted. The apparatus advances ignition timing if the average LPP value is retarded with respect to the DLPP value. The ignition timing is maintained in the same direction as the previous adjustment if the average LPP is advanced and becoming less advanced with respect to the DLPP value, but is reversed to the opposite direction from that of the previous adjustment if the average LPP is advanced and becoming more advanced with respect to the DLPP value. The amount of adjustment is proportional to the product of the difference between the average LPP value and DLPP value and the rate of change in the average LPP value. Thus, MBT is maintained in spite of the foldover effect in the LPP vs. spark advance curve produced by abnormal combustion modes without the need for independently sensing the abnormal combustion modes themselves.

    摘要翻译: 用于内燃机的LLP点火正时控制器周期性地检测发动机燃烧室中的LPP并产生平均LPP值。 产生指示所需LPP的DLPP值; 定时调整点火正时。 如果平均LPP值相对于DLPP值延迟,则该装置提前点火正时。 如果平均LPP提前并且相对于DLPP值变得不太先进,则点火正时保持在与先前调整相同的方向上,但是如果平均LPP前进,则反转到与先前调整相反的方向, 相对于DLPP值越​​来越高。 调整量与平均LPP值和DLPP值之间的差异与平均LPP值的变化率的乘积成正比。 因此,尽管在不同的燃烧模式产生的LPP与火花提前曲线之间仍然保持MBT,而不需要独立地感测异常燃烧模式本身。

    Diagnostic systems and methods for variable lift mechanisms of engine systems having a camshaft driven fuel pump
    33.
    发明授权
    Diagnostic systems and methods for variable lift mechanisms of engine systems having a camshaft driven fuel pump 有权
    具有凸轮轴驱动的燃油泵的发动机系统的可变升程机构的诊断系统和方法

    公开(公告)号:US07921701B2

    公开(公告)日:2011-04-12

    申请号:US12429769

    申请日:2009-04-24

    IPC分类号: G01M15/04

    摘要: A lift mechanism diagnostic system comprises a fuel pump disabling module, a pressure module, and a diagnostic module. The fuel pump disabling module selectively disables a fuel pump that is driven by a camshaft. The pressure module determines a first pressure of fluid provided to a variable valve lift mechanism when the variable valve lift mechanism is operated in a first lift mode while the fuel pump is disabled and determines a second pressure of the fluid when the variable valve lift mechanism is operated in a second lift mode while the fuel pump is disabled. The diagnostic module selectively diagnoses a fault in the variable valve lift mechanism based on the first and second pressures.

    摘要翻译: 升降机构诊断系统包括燃料泵禁用模块,压力模块和诊断模块。 燃油泵停用模块选择性地禁用由凸轮轴驱动的燃油泵。 当可变气门提升机构在第一提升模式下操作而燃料泵被禁用时,压力模块确定提供给可变气门提升机构的流体的第一压力,并且当可变气门升程机构是可变气门升程机构时,确定流体的第二压力 在燃油泵停用时,以第二提升模式运行。 诊断模块基于第一和第二压力选择性地诊断可变气门提升机构中的故障。

    Fuel temperature estimation in a spark ignited direct injection engine
    35.
    发明授权
    Fuel temperature estimation in a spark ignited direct injection engine 有权
    火花点火直喷发动机的燃油温度估算

    公开(公告)号:US07873461B2

    公开(公告)日:2011-01-18

    申请号:US12272176

    申请日:2008-11-17

    IPC分类号: F02D41/34

    摘要: A fuel control system that includes a fuel injector control module that selectively applies a power source to a coil of a fuel injector. The fuel control system also includes a current determination module that selectively measures current flowing through the coil. The fuel control system also includes a fuel temperature estimation module that selectively calculates a resistance of the coil based on the measured current and a voltage value of the power source and that determines an estimated fuel temperature based on the resistance. The fuel injector control module controls operation of a fuel system based on the estimated fuel temperature.

    摘要翻译: 一种燃料控制系统,其包括燃料喷射器控制模块,其将电源选择性地施加到燃料喷射器的线圈。 燃料控制系统还包括电流确定模块,其选择性地测量流过线圈的电流。 燃料控制系统还包括燃料温度估计模块,其基于测量的电流和电源的电压值选择性地计算线圈的电阻,并且基于电阻来确定估计的燃料温度。 燃料喷射器控制模块基于估计的燃料温度控制燃料系统的操作。

    FUEL PUMP CONTROL SYSTEM AND METHOD
    37.
    发明申请
    FUEL PUMP CONTROL SYSTEM AND METHOD 有权
    燃油泵控制系统及方法

    公开(公告)号:US20100263630A1

    公开(公告)日:2010-10-21

    申请号:US12424175

    申请日:2009-04-15

    IPC分类号: F02M59/36

    摘要: A control system includes a fuel pump control module and a diagnostic module. The fuel pump control module controls a fuel pump to provide fuel to a fuel rail. The diagnostic module controls the fuel pump control module to provide a predetermined amount of fuel to the fuel rail, determines an estimated pressure increase within the fuel rail based on the predetermined amount of fuel, and compares an actual pressure increase within the fuel rail to the estimated pressure increase. The fuel pump control module selectively controls the fuel pump based on the comparison.

    摘要翻译: 控制系统包括燃料泵控制模块和诊断模块。 燃料泵控制模块控制燃料泵以向燃料轨提供燃料。 诊断模块控制燃料泵控制模块以向燃料轨提供预定量的燃料,基于预定量的燃料确定燃料轨道内的估计压力增加,并且将燃料轨道内的实际压力增加与 估计压力增加。 燃料泵控制模块基于比较选择性地控制燃料泵。

    Two-step oil control valve failure diagnostic
    38.
    发明授权
    Two-step oil control valve failure diagnostic 有权
    两步油控阀故障诊断

    公开(公告)号:US07783413B2

    公开(公告)日:2010-08-24

    申请号:US12041159

    申请日:2008-03-03

    IPC分类号: F01L9/04 F01L9/02 G05D1/00

    摘要: A method may include commanding operation of an engine in a first lift mode. The engine may include a valve lifter system that selectively operates a valve member in the first lift mode and a second lift mode through engagement with a camshaft. A first duty cycle of a cam phaser oil control valve (OCV) may be determined to maintain a first camshaft position corresponding to the first lift mode. The camshaft position may be maintained by a cam phaser that is coupled to the camshaft and in communication with the cam phaser OCV. Engine operation may be commanded to the second lift mode and a second duty cycle of the cam phaser OCV may be determined to maintain a second camshaft position corresponding to the second lift mode. A valve lifter system failure may be diagnosed based on a difference between the first and second duty cycles.

    摘要翻译: 一种方法可以包括以第一提升模式命令发动机的操作。 发动机可以包括气门升降器系统,其在第一提升模式中选择性地操作阀构件,并且通过与凸轮轴接合而包括第二提升模式。 可以确定凸轮相位器油控制阀(OCV)的第一占空比以保持对应于第一升程模式的第一凸轮轴位置。 凸轮轴位置可以由耦合到凸轮轴并与凸轮移相器OCV连通的凸轮相位器来维持。 发动机操作可以被命令到第二提升模式,并且可以确定凸轮移相器OCV的第二占空比以保持对应于第二提升模式的第二凸轮轴位置。 可以基于第一和第二占空比之间的差异来诊断气门挺杆系统故障。

    SOLENOID DIAGNOSTIC SYSTEMS FOR CYLINDER DEACTIVATION CONTROL
    40.
    发明申请
    SOLENOID DIAGNOSTIC SYSTEMS FOR CYLINDER DEACTIVATION CONTROL 有权
    用于气缸停止控制的电磁诊断系统

    公开(公告)号:US20100154526A1

    公开(公告)日:2010-06-24

    申请号:US12338017

    申请日:2008-12-18

    IPC分类号: G01M15/04 F02D43/00

    摘要: A solenoid diagnostic system includes a pressure monitoring module that determines a first pressure in an intake cam phaser for an intake camshaft and a second pressure in an exhaust cam phaser for an exhaust camshaft associated with a cylinder. A fuel injection monitoring module determines a fuel injection status associated with the cylinder. A fault determination module diagnoses a fault in a solenoid associated with the cylinder based on the first pressure, the second pressure, and the fuel injection status.

    摘要翻译: 螺线管诊断系统包括压力监测模块,其确定用于进气凸轮轴的进气凸轮相位器中的第一压力和用于与气缸相关联的排气凸轮轴的排气凸轮相位器中的第二压力。 燃料喷射监测模块确定与气缸相关联的燃料喷射状态。 故障确定模块基于第一压力,第二压力和燃料喷射状态来诊断与气缸相关联的螺线管中的故障。