Control apparatus and method for valve actuating system of internal combustion engine
    4.
    发明授权
    Control apparatus and method for valve actuating system of internal combustion engine 失效
    内燃机气门控制系统的控制装置及方法

    公开(公告)号:US06782853B2

    公开(公告)日:2004-08-31

    申请号:US10645912

    申请日:2003-08-22

    IPC分类号: F01L134

    摘要: A control apparatus is provided for a valve actuating system which is operable to lift an intake valve or an exhaust valve of an internal combustion engine and includes a lift characteristic changing mechanism for changing a lift characteristic of the intake valve or the exhaust valve. The control apparatus calculates a target operation value of the lift characteristic changing mechanism, and calculates a realizable range of the operation value which can be realized by the lift characteristic changing mechanism, based on a controlled variable that can be given to the lift characteristic changing mechanism and at least one parameter related to an environment surrounding the lift characteristic changing mechanism. If the target operation value is not within the realizable range of the operation value, the control apparatus calculates a new target operation value to be within the realizable range.

    摘要翻译: 提供了一种用于阀致动系统的控制装置,其可操作以提升内燃机的进气门或排气门,并且包括用于改变进气门或排气门的升程特性的提升特性改变机构。 控制装置计算升降特性变更机构的目标运转值,根据提升特性变更机构的受控变量,计算升降特性变更机构能够实现的运转值的可实现范围 以及与围绕提升特性变化机构的环境有关的至少一个参数。 如果目标操作值不在操作值的可实现范围内,则控制装置将新的目标操作值计算在可实现的范围内。

    Control device and method for variable valve mechanism
    5.
    发明授权
    Control device and method for variable valve mechanism 有权
    可变气门机构的控制装置及方法

    公开(公告)号:US07690339B2

    公开(公告)日:2010-04-06

    申请号:US11713750

    申请日:2007-03-05

    IPC分类号: F01L1/34

    摘要: A variable valve timing and lift mechanism includes an actuator that adjusts the period in which an intake valve is held open by moving a drive element. When a control unit switches the duration, the control unit controls the actuator so that the duration is changed at a first speed when the duration is equal to a first value, and at a second speed when the duration is equal to a second value that is smaller than the first value. The absolute value of the second speed is smaller than the absolute value of the first speed. In effect, the actuator is controlled so that when the duration is in a short-duration range, the duration changes more slowly than when the duration is in a long-duration range.

    摘要翻译: 可变气门正时和提升机构包括致动器,其通过移动驱动元件来调节进气门保持打开的时段。 当控制单元切换持续时间时,控制单元控制致动器,使得持续时间在持续时间等于第一值时以第一速度改变持续时间,并且当持续时间等于第二值时 小于第一个值。 第二速度的绝对值小于第一速度的绝对值。 实际上,致动器被控制,使得当持续时间处于短持续时间范围时,持续时间变化比持续时间长于持续时间范围的变化更慢。

    Control device and method for variable valve mechanism
    6.
    发明授权
    Control device and method for variable valve mechanism 有权
    可变气门机构的控制装置及方法

    公开(公告)号:US07685978B2

    公开(公告)日:2010-03-30

    申请号:US11646272

    申请日:2006-12-28

    IPC分类号: F01L1/34

    摘要: A control device for a variable valve mechanism that avoids the overheating an actuator while reducing adverse effects on the driveability of a vehicle. The actuator adjusts the lift of an intake valve by moving a drive element, and a sensor is used to determine whether the actuator will overheat. A control unit stops the drive element if the lift adjusted by the actuator is equal to or larger than a first predetermined value, when the control unit determines that the actuator will overheat. The actuator may be an electric actuator. In this case, the actuator maintains the drive element in a fixed position when supply of electric power to the actuator is interrupted. The control unit stops the drive element, and interrupts the supply of electric power to the actuator.

    摘要翻译: 一种用于可变气门机构的控制装置,其避免了致动器的过热,同时减少对车辆的驾驶能力的不利影响。 致动器通过移动驱动元件来调节进气阀的升程,并且使用传感器来确定执行器是否会过热。 如果由致动器调节的升程等于或大于第一预定值,则控制单元停止驱动元件,当控制单元确定致动器将过热时。 致动器可以是电致动器。 在这种情况下,当致动器的电力供应中断时,致动器将驱动元件保持在固定位置。 控制单元停止驱动元件,并中断对致动器的电力供应。

    Failure diagnostic apparatus for variable valve mechanism of internal combustion engine and failure diagnostic method for variable valve mechanism
    7.
    发明授权
    Failure diagnostic apparatus for variable valve mechanism of internal combustion engine and failure diagnostic method for variable valve mechanism 失效
    内燃机可变气门机构故障诊断装置及可变气门机构故障诊断方法

    公开(公告)号:US07424872B2

    公开(公告)日:2008-09-16

    申请号:US11035078

    申请日:2005-01-14

    IPC分类号: F01L1/34

    摘要: A failure diagnosis for a slide sensor of a variable valve mechanism is performed when a valve working angle is at a value in the initial state. The initial state is set to a valve characteristic state where the valve working angle is at the maximum value. The maximum valve working angle corresponds to the refuge running performable region in which an engine can be started and refuge running can be performed. Therefore, even when it is difficult to adjust the valve working angle using rotation of a spiral cam due to a failure in the slide sensor, the refuge running can be performed only by maintaining the initial state by maintaining control. It is thus possible to increase reliability of the refuge running in the case where a failure has occurred in the variable valve mechanism.

    摘要翻译: 当阀工作角度处于初始状态的值时,执行可变气门机构的滑动传感器的故障诊断。 初始状态被设定为阀工作角为最大值的阀特性状态。 最大阀工作角度对应于能够启动发动机并可进行避难运行的避难所运行区域。 因此,即使由于滑动传感器的故障而难以通过螺旋凸轮的旋转来调节阀的工作角度,所以只能通过维持控制来维持初始状态来进行避难运行。 因此,在可变气门机构发生故障的情况下,可以提高避难运行的可靠性。

    Control apparatus and control method for variable valve actuation mechanism of internal combustion engine
    8.
    发明授权
    Control apparatus and control method for variable valve actuation mechanism of internal combustion engine 有权
    内燃机可变气门驱动机构的控制装置及控制方法

    公开(公告)号:US07316210B2

    公开(公告)日:2008-01-08

    申请号:US11360763

    申请日:2006-02-24

    申请人: Naohide Fuwa

    发明人: Naohide Fuwa

    IPC分类号: F01L1/34

    摘要: An electronic control unit sets a target valve actuation parameter in accordance with an operating state of an internal combustion engine, and controls a variable valve actuation mechanism such that an actual valve actuation parameter of an intake valve becomes equal to the target valve actuation parameter. The variable valve actuation mechanism changes a valve actuation parameter of the intake valve. From before an initial fuel injection is performed to when a starting process of the engine is completed, the electronic control unit sets the target valve actuation parameter to an engine starting valve actuation parameter at which the valve closing timing of the intake valve coincides with or is close to a bottom dead center of the intake valve.

    摘要翻译: 电子控制单元根据内燃机的运转状态来设定目标阀致动参数,并控制可变气门致动机构,使得进气门的实际气门致动参数等于目标气门致动参数。 可变阀致动机构改变进气门的阀致动参数。 从执行初始燃料喷射到发动机的起动过程完成之前,电子控制单元将目标阀致动参数设定为进气门关闭正时重合的发动机起动阀启动参数,或者是 靠近进气阀的下止点。

    Control device and method for variable valve mechanism
    9.
    发明申请
    Control device and method for variable valve mechanism 有权
    可变气门机构的控制装置及方法

    公开(公告)号:US20070163525A1

    公开(公告)日:2007-07-19

    申请号:US11646272

    申请日:2006-12-28

    IPC分类号: F01L1/34

    摘要: A control device for a variable valve mechanism that avoids the overheating an actuator while reducing adverse effects on the driveability of a vehicle. The actuator adjusts the lift of an intake valve by moving a drive element, and a sensor is used to determine whether the actuator will overheat. A control unit stops the drive element if the lift adjusted by the actuator is equal to or larger than a first predetermined value, when the control unit determines that the actuator will overheat. The actuator may be an electric actuator. In this case, the actuator maintains the drive element in a fixed position when supply of electric power to the actuator is interrupted. The control unit stops the drive element, and interrupts the supply of electric power to the actuator.

    摘要翻译: 一种用于可变气门机构的控制装置,其避免了致动器的过热,同时减少对车辆的驾驶能力的不利影响。 致动器通过移动驱动元件来调节进气阀的升程,并且使用传感器来确定执行器是否会过热。 如果由致动器调节的升程等于或大于第一预定值,则控制单元停止驱动元件,当控制单元确定致动器将过热时。 致动器可以是电致动器。 在这种情况下,当致动器的电力供应中断时,致动器将驱动元件保持在固定位置。 控制单元停止驱动元件,并中断对致动器的电力供应。