会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 5. 发明授权
    • Method for automatic traction control in a hybrid electric vehicle
    • 混合动力汽车自动牵引力控制方法
    • US07222014B2
    • 2007-05-22
    • US10846016
    • 2004-05-14
    • Xuefeng T. TaoTodd M. SteinmetzTung-Ming HsiehWilliam R. Cawthorne
    • Xuefeng T. TaoTodd M. SteinmetzTung-Ming HsiehWilliam R. Cawthorne
    • G06F7/00
    • B60W20/00B60K1/02B60K6/40B60K6/445B60W10/06B60W10/08B60W30/18172B60W2720/30F16H3/728F16H2037/0866F16H2037/102F16H2037/104F16H2037/106F16H2200/201F16H2200/2035Y02T10/6239Y02T10/6286Y02T10/7258
    • A method for providing traction control in vehicle powertrain systems is particularly adapted for traction control in a powertrain system of a hybrid electric vehicle comprising an internal combustion engine, an electric machine and a transmission that is operatively coupled to the electric machine and the engine and adapted to provide a transmission torque output in response to a transmission torque input received as a torque output from either or both of the engine and the electric machine. The method is adapted to utilize conventional traction control and engine control hardware, software and communication standards to implement traction control. In one embodiment of the invention, a conventional traction controller is used to detect a wheel spin condition and provide a plurality of first output torque command messages in response thereto. The plurality of first output torque command messages are used to obtain a torque reduction which is applied to a reference output torque to obtain a corresponding plurality of traction control output torque commands for the powertrain system during the wheel spin condition. A rate limit may also be applied to control the rate of change between successive ones of the traction control output torque commands in order to reduce the possibility of extension of the wheel spin condition, or recurrence of another wheel spin condition. Each traction control output torque command may be used to determine an associated traction control engine torque output command and traction control electric machine torque output command.
    • 用于在车辆动力系统中提供牵引力控制的方法特别适用于混合动力车辆的动力系统中的牵引力控制,所述混合动力车辆包括内燃机,电机和可操作地耦合到电机和发动机的变速器, 以响应于作为从发动机和电机中的一个或两者输出的扭矩接收的传动转矩输入来提供传动转矩输出。 该方法适用于利用传统的牵引力控制和发动机控制硬件,软件和通信标准来实现牵引力控制。 在本发明的一个实施例中,传统的牵引控制器用于检测车轮旋转状态,并响应于此提供多个第一输出转矩指令消息。 多个第一输出转矩指令消息用于获得施加到参考输出转矩的转矩降低,以在车轮旋转状态期间获得用于动力系统的相应的多个牵引控制输出转矩指令。 也可以应用速率限制来控制牵引控制输出转矩指令中连续的转矩指令之间的变化率,以便减少车轮旋转状态的延长或另一个车轮旋转状态的再现。 每个牵引力控制输出转矩指令可用于确定相关的牵引力控制发动机转矩输出指令和牵引力控制电机转矩输出指令。
    • 6. 发明授权
    • Multi-stage compression ignition engine start
    • 多级压缩点火发动机起动
    • US07028657B2
    • 2006-04-18
    • US10846013
    • 2004-05-14
    • Jy-Jen F. SahGregory A. HubbardWilliam R. CawthorneXuefeng T. TaoTodd M. Steinmetz
    • Jy-Jen F. SahGregory A. HubbardWilliam R. CawthorneXuefeng T. TaoTodd M. Steinmetz
    • F02N11/00
    • F02D41/064F02N11/08F02N2300/102
    • A powertrain includes a diesel compression engine and an electric machine operatively coupled thereto and effective to rotate the engine during engine cranking. Cold engine cranking is accomplished in a staged manner including a first stage wherein the engine is cranked to a first speed below the resonant speed of the coupled engine and electric machine combination for a first duration and thereafter cranked to a second speed above the resonant speed for a second duration. Transition out of cranking at the first and second speeds is accomplished when relative combustion stability is demonstrated. Cranking at the first or second speed is aborted when excessive crank times or if low battery voltages are observed. A third stage is included wherein the engine is cranked to a third speed below the engine idle speed. Transition out of cranking at the third speed is accomplished when relative combustion stability is demonstrated, whereafter normal engine control takes over.
    • 动力系包括柴油压缩发动机和可操作地联接到其上的电机,并且在发动机起动期间有效地使发动机旋转。 冷发动机起动以分阶段方式实现,包括第一阶段,其中发动机起动至低于联合发动机和电机组合的共振速度的第一速度,并且之后起动至高于谐振速度的第二速度 第二个持续时间。 当相对燃烧稳定性得到证实时,可以以第一和第二速度转换起动。 在超过曲柄时间或观察到电池电压不足时,以第一或第二速度起动。 包括第三级,其中发动机起动至低于发动机怠速转速的第三速度。 当相对燃烧稳定性得到证明时,在第三速度下转变为起动,此后正常的发动机控制接管。
    • 7. 发明授权
    • System for detection of low power in at least one cylinder of a
multi-cylinder engine
    • 用于在多气缸发动机的至少一个气缸中检测低功率的系统
    • US5392642A
    • 1995-02-28
    • US84071
    • 1993-06-30
    • Xuefeng T. Tao
    • Xuefeng T. Tao
    • G01M15/04G01H17/00G01L5/00G01M15/12G01M15/00
    • G01M15/12F02D35/02F02D2041/288F02D2200/025F02D2200/1015F02D35/027
    • Vibration sensors are used to monitor the resonant frequency of each cylinder of a multi-cylinder engine and the detection of an abnormal resonant frequency, i.e., one outside of an established range, is used as an indication that one or more specific cylinders is operating at an improper power level. Vibration signals associated with combustion in each cylinder can be used to perform FFT (Fast Fourier Transformation) with the combustion resonant frequencies for all engine cycles being determined and an averaged resonant frequency for each cylinder obtained. Shifts in the averaged resonant frequency or the detection of a zero resonant frequency for only one of the cylinders can be used as an indication that the cylinder with the shifted or zero resonant frequency is experiencing a low power condition, including misfiring.
    • 振动传感器用于监测多气缸发动机的每个气缸的谐振频率,并且使用异常谐振频率(即,在建立的范围之外的一个)的检测作为一个或多个特定气缸在 不正确的权力水平。 与每个气缸中的燃烧相关的振动信号可用于执行FFT(快速傅里叶变换),其中确定所有发动机循环的燃烧谐振频率,并获得每个气缸的平均谐振频率。 可以使用平均谐振频率的移动或仅对一个气缸检测零谐振频率作为具有移位或零谐振频率的气缸经历低功率状况(包括失火)的指示。