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    Variable valve system of internal combustion engine, control device and variable valve device
    114.
    发明专利
    Variable valve system of internal combustion engine, control device and variable valve device 有权
    内燃机可变阀系统，控制装置和变量阀装置

    公开(公告)号：JP2014173451A

    公开(公告)日：2014-09-22

    申请号：JP2013044864

    申请日：2013-03-07

    Applicant: Hitachi Automotive Systems Ltd ,  日立オートモティブシステムズ株式会社

    Inventor： NAKAMURA MAKOTO

    IPC: F02D13/02 ,  F01L13/00 ,  F02D41/04 ,  F02D41/12

    CPC classification number: F01L13/0015 ,  B60K6/485 ,  F01L1/10 ,  F01L1/185 ,  F01L13/0005 ,  F01L13/0063 ,  F02D13/0203 ,  Y02T10/18 ,  Y02T10/6226

    Abstract: PROBLEM TO BE SOLVED: To provide a variable valve system capable of restricting partial wear and dropping caused by a lateral dislocation of a swing arm in respect to a supporting member by limiting the maximum number of revolution of an engine in response to a lost motion displacement magnitude (a stroke amount) of a valve stopper mechanism during stopping state of the valve.SOLUTION: At a step S1, a practical valve lift amount L corresponding to a rotational angle θ of a control shaft 21 is calculated and at the same time an output signal of a hydraulic switch 48 is inputted. At a step S2, when a signal outputted from the hydraulic switch is ON, the operation is transferred to a step S3 under an assumption that the valve is kept in its stopped state. In this case, a practical lift L at the operating side from the rotational angle θ of the control shaft is calculated and a lost motion displacement amount S is calculated as an imaginary lift at the stopped side, a practical allowable limit number of revolution Na corresponding to the displacement amount S is calculated in reference to a Na characteristic in Fig.11 and at a step S4, it is set with Na being applied as the limited revolution NI.

    Abstract translation: 要解决的问题：提供一种可变阀系统，其能够通过限制发动机的响应于空转位移的最大转数而限制摆臂相对于支撑构件的横向错位引起的部分磨损和下降 在阀的停止状态期间阀止动机构的大小（行程量）。解决方案：在步骤S1，对应于旋转角度的实际气门升程量L; 并且同时输入液压开关48的输出信号。 在步骤S2中，当从液压开关输出的信号为ON时，假定阀门处于停止状态，则将该操作转移到步骤S3。 在这种情况下，操作侧的实际升程L为旋转角度; 并且计算失速运动位移量S作为停止侧的虚拟升程，参照图11中的Na特性来计算与位移量S对应的实际容许极限转数Na 并且在步骤S4中，将Na设定为作为有限转数NI。

    Variable valve gear of internal combustion engine
    115.
    发明专利
    Variable valve gear of internal combustion engine 有权
    内燃机变速齿轮

    公开(公告)号：JP2014055556A

    公开(公告)日：2014-03-27

    申请号：JP2012201121

    申请日：2012-09-13

    Applicant: Hitachi Automotive Systems Ltd ,  日立オートモティブシステムズ株式会社

    Inventor： NAKAMURA MAKOTO

    IPC: F01L13/00

    CPC classification number: F01L1/267 ,  F01L1/10 ,  F01L13/0036 ,  F01L13/0063 ,  F01L2820/032

    Abstract: PROBLEM TO BE SOLVED: To provide a variable valve gear that can enhance fuel consumption by combustion improvement, in which a first intake valve repeatedly opens and closes and a second intake valve retains a closed state in, for example, a low load area, thereby producing a sufficient intake swirl in a cylinder.SOLUTION: A variable valve gear of an internal combustion engine includes: a variable mechanism that varies operation states of first and second intake valves 3a and 3b; a first swing arm 30 that transfers oscillating force by contact with a single oscillating cam 7 to open and close the first intake valve; a second swing arm 31 that opens and closes the second intake valve; and a connection switching mechanism 36 that brings both of the swing arms into connection or no connection with each other in response to an engine operation state. The second intake valve retains in a zero lift state if an oscillation amount of the first swing arm is controlled to be lower than a predetermined value, while the first and second intake valves open and close together if the oscillation amount of the first swing arm is controlled to be more than or equal to the predetermined value.

    Abstract translation: 要解决的问题：提供一种可变阀齿轮，其可以通过燃烧改善来提高燃料消耗，其中第一进气门重复地打开和关闭，并且第二进气门在例如低负载区域中保持关闭状态，由此 在气缸中产生足够的进气涡流。解决方案：内燃机的可变气门齿轮包括：改变第一和第二进气门3a和3b的运行状态的可变机构; 第一摆臂30，其通过与单个摆动凸轮7接触而传递振荡力，以打开和关闭第一进气门; 打开和关闭第二进气门的第二摆臂31; 以及连接切换机构36，其使两个摆臂相对于发动机运转状态彼此连接或不相连。 如果第一摆臂的振荡量控制在低于预定值，则第二进气门保持零升档状态，而如果第一摆臂的摆动量为 被控制为大于或等于预定值。

    Variable valve device of internal combustion engine
    116.
    发明专利
    Variable valve device of internal combustion engine 审中-公开
    内燃机可变阀装置

    公开(公告)号：JP2014005756A

    公开(公告)日：2014-01-16

    申请号：JP2012140574

    申请日：2012-06-22

    Applicant: Hitachi Automotive Systems Ltd ,  日立オートモティブシステムズ株式会社

    Inventor： NAKAMURA MAKOTO

    IPC: F01L13/00

    CPC classification number: F01L1/267 ,  F01L1/10 ,  F01L1/2405 ,  F01L13/0005 ,  F01L13/0026 ,  F01L2013/0073 ,  F01L2105/00

    Abstract: PROBLEM TO BE SOLVED: To provide a variable valve device capable of suppressing falling or the like of a swing arm with respect to a pivot by inhibiting valve stopping control when a lost motion amount (stroke amount) of a valve stopping mechanism during one valve stopping exceeds a predetermined value.SOLUTION: An oscillation cam 7 is oscillated via a transmission mechanism in accordance with rotation of a driving cam 5a and, thereby, respective intake valves 3, 3 are openably and closably operated by a pair of swing arms 6. A valve stopping mechanism is provided for stopping one side intake valve by subjecting a first hydraulic lash adjuster 10a which is brought into contact with the other edge part 6b of one side swing arm to get to an oscillation fulcrum to lost motion in accordance with an engine operation state. Meanwhile, when a lost motion amount of the valve stopping mechanism exceeds a predetermined value, a solenoid selection valve 55 is controlled by a valve stopping inhibition circuit of a control unit 53 such that the valve stopping is inhibited by a regulation pin 41.

    Abstract translation: 要解决的问题：提供一种可变阀装置，其能够通过在一个阀停止期间当阀停止机构的运动量（行程量））通过禁止阀停止控制而相对于枢轴来抑制摆臂的跌落等 超过预定值。解决方案：摆动凸轮7根据驱动凸轮5a的旋转经由传动机构振动，从而相应的进气门3,3可由一对摆臂6打开和关闭操作。 阀停止机构用于通过使与一侧摆臂的另一边缘部6b接触的第一液压间隙调节器10a根据发动机运转而发生振动支点而失去动作来停止一侧进气阀 州。 同时，当阀止动机构的运动量超过预定值时，由控制单元53的阀阻止电路控制螺线管选择阀55，使得阀停止被调节销41阻止。

    Variably operated valve system and tightening structure between control shaft and actuator of variably operated valve system
    117.
    发明专利
    Variably operated valve system and tightening structure between control shaft and actuator of variably operated valve system 审中-公开
    可变阀门系统和可变阀门系统控制轴与执行器之间的紧凑结构

    公开(公告)号：JP2013170554A

    公开(公告)日：2013-09-02

    申请号：JP2012036889

    申请日：2012-02-23

    Applicant: Hitachi Automotive Systems Ltd ,  日立オートモティブシステムズ株式会社

    Inventor： KATAYAMA MANABU ,  YOSHIDA KATSUNARI ,  YAMADA YOSHIHIKO

    IPC: F01L13/00

    CPC classification number: F01L1/044 ,  F01L1/10 ,  F01L13/0026 ,  F01L2820/032 ,  F01L2820/042 ,  F01L2820/044 ,  Y10T74/18288

    Abstract: PROBLEM TO BE SOLVED: To provide a variably operated valve system that facilitates size management on a control shaft and of which the manufacturing work efficiency can be improved.SOLUTION: A variably operated valve system includes: a plane part 24 formed on an outer peripheral surface of a control shaft 19 and having raised opposite surfaces 24b, 24c cut from a shaft direction so as to hold a connection member 27 therebetween from a shaft direction; a bolt hole 25 bored from the plane part along a diameter direction through an oil passage 23, and having a female screw hole 25a formed on a tip side; and a restriction part comprising a cylindrical fitting groove 26 formed at an upper hole edge of the bolt hole of the plane part and a cylindrical fitting projection part 28 formed at a lower hole edge of a bolt insertion hole of the connection member and fitted in the fitting groove, the connection member being fixed to a control shaft by threadedly tightening a fixing bolt 19 in the bolt hole through the bolt insertion hole of the connection member.

    Abstract translation: 要解决的问题：提供一种可变操作的阀系统，其便于控制轴上的尺寸管理，并且可以提高其制造工作效率。解决方案：可变操作的阀系统包括：形成在外周表面上的平面部分24 控制轴19并且具有从轴向切割的相对表面24b，24c的凸起，以便在轴向上保持连接构件27; 沿着直径方向从平面部穿过油路23钻出的螺栓孔25，并且具有形成在前端侧的内螺纹孔25a; 以及限制部，其包括形成在平面部的螺栓孔的上孔边缘处的圆筒形嵌合槽26和形成在连接构件的螺栓插入孔的下孔边缘处的圆筒形嵌合突出部28， 所述连接构件通过所述连接构件的螺栓插入孔螺栓地拧紧在所述螺栓孔中的固定螺栓19而固定到控制轴。

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