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    INTERNAL COMBUSTION ENGINE
    3.
    发明公开
    INTERNAL COMBUSTION ENGINE 审中-公开

    公开(公告)号：EP2672092A4

    公开(公告)日：2018-04-18

    申请号：EP12741583

    申请日：2012-01-30

    申请人： NISSAN MOTOR

    发明人： HAMAMOTO TAKAYUKI ,  TOMINAGA KENSUKE ,  YOSHIOKA YOUKO

    IPC分类号： F02D13/02 ,  F01L1/34

    CPC分类号： F01L1/34 ,  F01L1/356 ,  F01L13/0015 ,  F01L2013/0073 ,  F01L2013/103 ,  F01L2250/02 ,  F01L2800/06 ,  F02D13/023 ,  F02D13/0238 ,  F02D13/0257 ,  Y02T10/18

    摘要： Provided is an internal combustion engine including two intake valves for each cylinder, the internal combustion engine including: a fixed cam for driving one of the two intake valves with a lift characteristic having a valve opening timing close to a top dead center; a variable valve actuation mechanism capable of changing, in accordance with an engine running condition, lift characteristics between a low-lift characteristic having an event angle and a lift amount each being smaller than an event angle and a lift amount of the fixed cam, and a high-lift characteristic having the event angle and the lift amount each being larger than the event angle and the lift amount of the fixed cam; and a variable cam for driving another of the two intake valves, the variable cam including the variable valve actuation mechanism, in which the variable valve actuation mechanism is configured to set the lift characteristic of the variable cam so as to obtain a valve opening timing on a retard side relative to the valve opening timing of the fixed cam in a case of the low-lift characteristic.

    VARIABLE VALVE MECHANISM OF INTERNAL COMBUSTION ENGINE
    5.
    发明公开
    VARIABLE VALVE MECHANISM OF INTERNAL COMBUSTION ENGINE 审中-公开
    内燃机的变阀机构

    公开(公告)号：EP3199771A1

    公开(公告)日：2017-08-02

    申请号：EP16196504.1

    申请日：2016-10-31

    申请人： Otics Corporation

    发明人： MAEZAKO, Takayuki ,  SUGIURA, Akira

    IPC分类号： F01L13/00 ,  F01L1/047 ,  F01L1/18

    CPC分类号： F01L1/18 ,  F01L1/047 ,  F01L1/185 ,  F01L1/34 ,  F01L13/0005 ,  F01L2001/186

    摘要： A variable valve mechanism of an internal combustion engine includes a camshaft having a general shaft part and a cam part arranged next to each other in an axial direction, an input arm that swings when pressed by the cam part, an output arm that is swingably mounted and that drives a valve when swinging, and a switch device that switches the variable valve mechanism between a coupled state where the input arm and the output arm are coupled to swing together and an uncoupled state. The output arm has a great height so that clearance between the output arm and the general shaft part is 3 mm or less when the variable valve mechanism is in the coupled state and the valve is closed. If the output arm bounces in the uncoupled state, the output arm comes into contact with the general shaft part through the clearance.

    摘要翻译： 内燃机的可变气门机构包括：凸轮轴，其具有在轴向上彼此相邻布置的一般轴部和凸轮部;输入臂，其在被凸轮部按压时摆动;输出臂，其可摆动地安装 并且在摆动时驱动阀;以及开关装置，其将所述可变气门机构切换为所述输入臂与所述输出臂连结成一体摆动的连结状态和非连结状态。 输出臂具有很高的高度，使得当可变气门机构处于连接状态并且气门关闭时，输出臂和一般轴部之间的间隙为3mm或更小。 如果输出臂在非耦合状态下弹起，则输出臂通过间隙与总轴部分接触。