公开(公告)号：US20060081203A1

公开(公告)日：2006-04-20

申请号：US11248251

申请日：2005-10-13

申请人： Kazunari Izumi ,  Haruyuki Urushihata

发明人： Kazunari Izumi ,  Haruyuki Urushihata

IPC分类号： F01L1/34 ,  F02D13/00

CPC分类号： F02D13/0219 ,  F01L1/344 ,  F01L2800/00 ,  F01L2800/14 ,  F01L2820/041 ,  F01L2820/042 ,  F02D41/009 ,  F02D41/0097 ,  F02D2041/001 ,  Y02T10/18

摘要： An ECU calculates an engine speed for calculating a camshaft phase based on a time period Tθ in which a crankshaft rotates a sampling angle θ. The camshaft phase is derived from a time difference between output timing of a cam angle signal and output timing of a crank angle signal based on the engine speed. According as the engine speed is lower, the sampling angle θ becomes small, so that the engine speed and the camshaft phase are precisely calculated.

摘要翻译： ECU基于曲轴旋转采样角度θ的时间段Tta来计算用于计算凸轮轴相位的发动机转速。 凸轮轴相位是根据发动机转速从凸轮角度信号的输出定时和曲柄角信号的输出定时之间的时间差导出的。 根据发动机转速较低，采样角度θ变小，从而精确计算发动机转速和凸轮轴相位。

公开(公告)号：US20060042578A1

公开(公告)日：2006-03-02

申请号：US11213898

申请日：2005-08-30

申请人： Kazunari Izumi ,  Haruyuki Urushihata

发明人： Kazunari Izumi ,  Haruyuki Urushihata

IPC分类号： F01L1/34

CPC分类号： F01L1/352 ,  F01L1/022 ,  F01L1/024 ,  F01L2800/00 ,  F01L2800/03 ,  F01L2820/032 ,  F01L2820/041

摘要： An internal combustion engine has a variable valve timing apparatus including a driving motor between a crankshaft and a camshaft. The driving motor rotates synchronously with the camshaft when the valve timing apparatus is not in operation. A motor rotation sensor produces a motor rotation signal. When the engine rotation speed is below a reference speed, the driving motor is not energized. Under this condition, the rotation speed and the rotation direction of the engine are calculated based on the motor rotation signal in place of a crank rotation signal produced by a crank angle sensor. Further, the rotation stop position of the engine is calculated based on the motor rotation signal when the engine is stopped.

摘要翻译： 内燃机具有可变气门正时装置，其包括在曲轴和凸轮轴之间的驱动电动机。 当气门正时装置不工作时，驱动电机与凸轮轴同步旋转。 电动机旋转传感器产生电动机旋转信号。 当发动机转速低于参考速度时，驱动电机不通电。 在这种条件下，代替由曲柄角传感器产生的曲柄旋转信号，基于马达旋转信号来计算发动机的转速和旋转方向。 此外，当发动机停止时，基于电动机旋转信号计算发动机的旋转停止位置。

公开(公告)号：US20050081808A1

公开(公告)日：2005-04-21

申请号：US10961038

申请日：2004-10-12

申请人： Hideji Tani ,  Haruyuki Urushihata

发明人： Hideji Tani ,  Haruyuki Urushihata

IPC分类号： F01L1/34 ,  F01L1/352 ,  F02D13/02

CPC分类号： F01L1/352 ,  F01L1/022 ,  F01L2800/00

摘要： The valve timing controller is driven by a motor. The valve controller has a control circuit and a driving circuit. The driving circuit receives a control signal generated by the control circuit and an engine rotation speed signal. The driving circuit supply a current to the motor to drive it based on the engine rotation speed represented by engine rotation speed signal and a target variation of the motor rotation speed represented by the control signal.

摘要翻译： 气门正时控制器由电机驱动。 阀控制器具有控制电路和驱动电路。 驱动电路接收由控制电路产生的控制信号和发动机转速信号。 驱动电路基于由发动机转速信号表示的发动机转速和由控制信号表示的电动机转速的目标变化，向电动机供给电流来驱动电动机。

公开(公告)号：US10047643B2

公开(公告)日：2018-08-14

申请号：US13210771

申请日：2011-08-16

申请人： Haruyuki Urushihata

发明人： Haruyuki Urushihata

IPC分类号： F01L1/34 ,  F01L1/344

摘要： When a variable valve timing device controls an oil pressure control valve in a manner that a VCT phase is locked at a middle lock phase, an advance chamber and a retard chamber are made to communicate with each other, so that oil is filled into both of the advance chamber and the retard chamber when the oil pressure control valve supplies oil to one of the advance chamber and the retard chamber in an oil filling mode. An oil pump supplies oil to the oil pressure control valve, and is controlled to have an oil flow rate that is equal to or larger than a predetermined value in the oil filling mode.

公开(公告)号：US08651074B2

公开(公告)日：2014-02-18

申请号：US12828793

申请日：2010-07-01

申请人： Haruyuki Urushihata ,  Minoru Wada

发明人： Haruyuki Urushihata ,  Minoru Wada

IPC分类号： F01L1/34

CPC分类号： F01L1/3442 ,  F01L1/024 ,  F01L2001/3443 ,  F01L2001/34469 ,  F01L2001/34476 ,  F01L2800/01

摘要： A VVT has a movable restriction member and a restriction slot. When the restriction member is in a projected position, the VVT is variable in a restricted range to which the restriction member can be rotatable within the restriction slot. When the restriction member is in a retracted position, the VVT is variable in a range wider than the restricted range. When a condition where the restriction member shall be projected is satisfied, if the variable range of the VVT reaches beyond the restricted range, the device determines that the restriction member is stuck at the retracted position. When a condition where the restriction member shall be retracted is satisfied, if the variable range of the VVT is restricted in the restricted range, the device determines that the restriction member is stuck at the projected position.

摘要翻译： VVT具有可动限制构件和限制槽。 当限制构件处于突出位置时，VVT可以在限制构件能够在限制槽内旋转的限制范围内变化。 当限制构件处于缩回位置时，VVT可在比限制范围更宽的范围内变化。 当满足限制部件投射的条件时，如果VVT的可变范围超过限制范围，则装置判断为限制部件被卡在缩回位置。 当满足限制件缩回的条件时，如果VVT的可变范围被限制在限制范围内，则该装置确定限制件被卡在投影位置。

公开(公告)号：US08297245B2

公开(公告)日：2012-10-30

申请号：US12852283

申请日：2010-08-06

申请人： Haruyuki Urushihata

发明人： Haruyuki Urushihata

IPC分类号： F01L1/34

CPC分类号： F01L1/3442 ,  F01L2001/34426 ,  F01L2001/34453 ,  F01L2001/34463 ,  F01L2001/34476

摘要： A valve timing adjuster includes a first rotor, a second rotor, a control valve, and a lock mechanism. The lock mechanism includes a retard limitation pin and an advance limitation pin, each of which is provided to the second rotor. The lock mechanism includes a retard limitation groove and an advance limitation groove, each of which is formed to the first rotor. The retard limitation groove and the advance limitation groove are designed to limit the displacement of the retard limitation pin in the retard direction and simultaneously limit the displacement of the advance limitation pin in the advance direction in order to lock the first rotor and the second rotor. The valve timing adjuster alternately increases the oil pressure in the retard chamber and the oil pressure in the advance chamber when the lock of the first and second rotors is released.

摘要翻译： 气门正时调节器包括第一转子，第二转子，控制阀和锁定机构。 锁定机构包括延迟限制销和前进限制销，每个都设置在第二转子上。 锁定机构包括延迟限制槽和前进限制槽，每个都形成在第一转子上。 延迟限制槽和前进限制槽被设计成限制延迟限制销在延迟方向上的位移，同时限制前进限制销在前进方向上的位移，以便锁定第一转子和第二转子。 当释放第一和第二转子的锁定时，气门正时调节器交替地增加延迟室中的油压和提前室中的油压。

公开(公告)号：US20120055429A1

公开(公告)日：2012-03-08

申请号：US13208652

申请日：2011-08-12

申请人： Takayoshi Nakamura ,  Haruyuki Urushihata

发明人： Takayoshi Nakamura ,  Haruyuki Urushihata

IPC分类号： F01L1/344

CPC分类号： F02D13/0238 ,  F01L1/3442 ,  F01L2001/3443 ,  F01L2001/34459 ,  F01L2001/34463 ,  F01L2001/34466 ,  F01L2001/34469 ,  F01L2001/34483 ,  F01L2250/02 ,  F01L2800/00 ,  F01L2800/12 ,  F01L2820/041 ,  F01L2820/042 ,  Y02T10/18

摘要： A variable valve timing control apparatus includes an abnormality determining portion and a valve controller. The abnormality determining portion determines whether there is an abnormality in a system of a VCT phase control in which an oil pressure control valve is controlled in a manner that an actual VCT phase coincides with a target phase. The valve controller controls the oil pressure control valve to drive a lock pin in a locking direction so as to lock the VCT phase when the abnormality determining portion determines that there is an abnormality in the system of the VCT phase control.

摘要翻译： 可变气门正时控制装置包括异常判定部和阀控制器。 异常判定部判定在实际的VCT相位与目标相位一致的方式控制油压控制阀的VCT相位控制的系统中是否存在异常。 阀控制器控制油压控制阀，以在锁定方向上驱动锁定销，以在异常确定部分确定VCT相位控制的系统中存在异常时锁定VCT相位。

公开(公告)号：US08020527B2

公开(公告)日：2011-09-20

申请号：US12438955

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： F01L1/352 ,  F01L1/344 ,  F01L2001/0537 ,  F01L2820/032 ,  F02D13/0219 ,  F02D13/0238 ,  F02D35/0007 ,  F02D2041/001 ,  F02D2041/1419 ,  Y02T10/18

摘要： A valve timing control is executed by an ECU that controls an engine and an electric-motor ECU that controls an electric motor. The ECU and the electric-motor EDU serve different functions. The ECU sets the target phase of an intake valve based on the engine operating state, and prepares a rotational speed command value for the electric motor that serves as an actuator such that a phase feedback control loop, in which the intake valve phase is caused to match the target phase, is formed. The electric-motor EDU forms a feedback control loop for the motor speed, in which the electric power supplied to the electric motor is controlled such that the electric motor rotates in accordance with the rotational speed command value.

摘要翻译： 气门正时控制由控制发动机的ECU和控制电动机的电动机ECU执行。 ECU和电动机EDU具有不同的功能。 ECU根据发动机工作状态设定进气门的目标相位，并为作为致动器的电动机准备转速指令值，使得使进气阀相位成为相位反馈控制回路 匹配目标阶段，形成。 电动机EDU形成用于电动机速度的反馈控制回路，其中控制供给到电动机的电力，使得电动机根据转速指令值旋转。

公开(公告)号：US07938088B2

公开(公告)日：2011-05-10

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根据控制指令控制电动机。 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。

公开(公告)号：US20100222990A1

公开(公告)日：2010-09-02

申请号：US12279778

申请日：2007-02-07

申请人： Zenichiro Mashiki ,  Yasumichi Inoue ,  Yoshihito Moriya ,  Haruyuki Urushihata

发明人： Zenichiro Mashiki ,  Yasumichi Inoue ,  Yoshihito Moriya ,  Haruyuki Urushihata

IPC分类号： F02D41/00 ,  F01L1/34

CPC分类号： F01L1/352

摘要： An ECU executes a program including the step of stopping power supply to an electric motor if a phase of an intake valve is in a first region between the most retarded angle and CA. In the case where the phase of the intake valve is in the first region, the rotational speed of relative rotation between the output shaft of the electric motor and a sprocket is reduced at reduction gear ratio R thereby to vary the phase of the intake valve. In the case where the phase of the intake valve is in a second region between CA and the most advanced angle, the rotational speed of the relative rotation is reduced at reduction gear ratio R thereby to vary the phase of the intake valve.

摘要翻译： 如果进气门的相位处于最大延迟角和CA之间的第一区域，则ECU执行包括停止向电动机供电的步骤的程序。 在进气门的相位处于第一区域的情况下，电动机的输出轴与链轮之间的相对旋转速度在减速比R下降低，从而改变进气门的相位。 在进气门的相位处于CA和最高提前角度的第二区域的情况下，相对旋转的转速在减速比R下降低，从而改变进气门的相位。