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    VARIABLE VALVE TIMING APPARATUS AND CONTROL METHOD THEREFOR
    7.
    发明申请
    VARIABLE VALVE TIMING APPARATUS AND CONTROL METHOD THEREFOR 有权
    可变阀定时装置及其控制方法

    公开(公告)号：US20090194047A1

    公开(公告)日：2009-08-06

    申请号：US12303341

    申请日：2007-03-22

    申请人： Zenichiro Mashiki ,  Yasumichi Inoue ,  Noboru Takagi ,  Haruyuki Urushihata

    发明人： Zenichiro Mashiki ,  Yasumichi Inoue ,  Noboru Takagi ,  Haruyuki Urushihata

    IPC分类号： F01L1/34 ,  F02D41/00

    CPC分类号： F01L1/34 ,  F01L1/352

    摘要： An ECU executes a program including the steps of: controlling, when the phase of an intake valve is a phase advanced relative to a threshold value CA (FF) (NO in S106), an electric motor operating an intake VVT mechanism by feedback control (S202); and controlling, when the phase of the intake valve is a phase retarded relative to the threshold value CA (FF) (YES in S106), the electric motor by feed-forward control (S200). Under the feed-forward control, a duty command value is output that is smaller than an upper limit of a duty command value under the feedback control.

    摘要翻译： ECU执行程序，包括以下步骤：当进气门的相位相对于阈值CA（FF）相位提前（S106中为“否”）时，控制通过反馈控制来操作进气VVT机构的电动机 S202）; 并且当进气门的相位相对于阈值CA（FF）相位延迟（S106中为“是”）时，通过前馈控制来控制电动机（S200）。 在前馈控制下，输出比反馈控制下的占空指令值的上限小的占空指令值。

    VARIABLE VALVE TIMING SYSTEM
    8.
    发明申请
    VARIABLE VALVE TIMING SYSTEM 有权
    可变阀门时序系统

    公开(公告)号：US20090101094A1

    公开(公告)日：2009-04-23

    申请号：US12159987

    申请日：2007-08-29

    申请人： Zenichiro Mashiki ,  Yasumichi Inoue ,  Noboru Takagi ,  Haruyuki Urushihata

    发明人： Zenichiro Mashiki ,  Yasumichi Inoue ,  Noboru Takagi ,  Haruyuki Urushihata

    IPC分类号： F01L1/34

    CPC分类号： F02D41/0002 ,  F01L1/352 ,  F01L1/356 ,  F02D41/221 ,  F02D2041/001 ,  F02D2041/2027 ,  Y02T10/42

    摘要： An ECU transmits a pulsed operation command signal, indicating operation commands for an electric motor used as a VVT actuator, to an electric-motor EDU. The electric-motor EDU recognizes the combination of the direction in which the actuator should be operated (actuator operation direction) and the control mode based on the duty ratio of the operation command signal, and the rotational speed command value based on the frequency of the operation command signal. The electric-motor EDU controls the electric motor according to the control commands. The duty ratio indicating the combination is set such that even if the duty ratio is falsely recognized, a false recognition concerning the actuator operation direction is prevented, such false recognition causing the valve phase to change in an undesirable direction, and even if the actuator operation direction is falsely recognized, the rate of change in the phase is restricted.

    摘要翻译： ECU向电动机EDU发送用于指示用作VVT致动器的电动机的操作命令的脉冲操作指令信号。 电动机EDU基于操作指令信号的占空比和转速指令值，识别执行器应该被操作的方向（致动器操作方向）与控制模式的组合， 操作指令信号。 电动机EDU根据控制命令控制电动机。 设定表示组合的占空比，使得即使占空比被错误识别，也可以防止对致动器操作方向的错误识别，这种错误识别导致阀相在不期望的方向上变化，并且即使致动器操作 方向被错误地认定，阶段的变化率受到限制。

    Valve characteristic controller and control method for internal combustion engine
    9.
    发明申请
    Valve characteristic controller and control method for internal combustion engine 有权
    内燃机阀门特征控制器及控制方法

    公开(公告)号：US20060243231A1

    公开(公告)日：2006-11-02

    申请号：US11257155

    申请日：2005-10-25

    申请人： Tadao Hasegawa ,  Yoshihito Moriya ,  Noboru Takagi

    发明人： Tadao Hasegawa ,  Yoshihito Moriya ,  Noboru Takagi

    IPC分类号： F01L1/34

    CPC分类号： F01L13/0015 ,  F01L1/34 ,  F01L2800/00 ,  F01L2800/10 ,  F02D13/0219 ,  F02D13/0261 ,  F02D13/0265 ,  F02D41/0002 ,  F02D41/10 ,  F02D2041/001 ,  Y02T10/18 ,  Y02T10/42

    摘要： A valve characteristic controller for an engine including variable valve actuation mechanisms, one for a first valve and another for a second valve, to vary the opening and closing timings of the valves. The controller executes main control to calculate a target timing of the first valve in accordance with an operation state of the engine and has the corresponding variable valve actuation mechanism adjust the timing of the first valve to the target timing. Further, the controller executes sub-control to calculate a target timing of the second valve based on a target valve overlap amount and the actual timing of the first valve and has the corresponding variable valve actuation mechanism adjust the valve timing of the second valve to the target timing. The main control is executed on the one of the two variable valve actuation mechanisms having a lower response speed.

    摘要翻译： 一种用于发动机的阀门特征控制器，其包括可变气门致动机构，一个用于第一阀，另一个用于第二阀，以改变阀的打开和关闭正时。 控制器执行主控制，以根据发动机的操作状态来计算第一阀的目标定时，并且相应的可变气门致动机构将第一阀的定时调节到目标定时。 此外，控制器执行子控制，以基于目标阀重叠量和第一阀的实际正时来计算第二阀的目标正时，并且具有相应的可变阀致动机构将第二阀的气门正时调节为 目标时机。 在具有较低响应速度的两个可变气门致动机构中的一个上执行主控制。