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    • 2. 发明授权
    • Internal combustion engine variable valve characteristic control apparatus and three-dimensional cam
    • 内燃机可变阀门特征控制装置和三维凸轮
    • US06360704B1
    • 2002-03-26
    • US09506958
    • 2000-02-18
    • Yoshihito MoriyaShinichiro KikuokaShuuji NakanoHideo Nagaosa
    • Yoshihito MoriyaShinichiro KikuokaShuuji NakanoHideo Nagaosa
    • F01L100
    • F01L13/0042F01L1/08F01L1/34F01L1/344
    • Variable valve characteristic control apparatuses realize a change in a valve characteristic in accordance with a requirement of an internal combustion engine and a three-dimensional cam for use in the variable valve characteristic control apparatus. In the case of an intake valve, two lift patterns and continuously varying lift patterns between the two lift patterns are realized by the three-dimensional cam through the driving of the variable valve characteristic control apparatus. The two lift patterns provide different amounts of lift in the delay side of a peak within a valve operation angle, but provide equal amounts of lift in the delay side of the peak. Since the intake cam has the two lift patterns, it is possible to select a phase where the two lift patterns provide equal amounts of lift and provide different amounts of lift in phases other than the equal-lift phase so as to accord to the characteristics of the internal combustion engine. Therefore, it is possible to achieve conformation to the characteristics of the engine and therefore constantly realize a suitable valve characteristic in accordance with the operational condition of the engine. Hence, improvements can be achieved in the output performance of the engine, the fuel consumption, the combustion stability and the like.
    • 可变阀特性控制装置根据内燃机和用于可变阀特性控制装置的三维凸轮的要求实现阀特性的变化。 在进气阀的情况下,通过可变气门特性控制装置的驱动,通过三维凸轮实现两个提升图案之间的两个提升图案和连续变化的提升图案。 两个提升模式在阀操作角度内在峰值的延迟侧提供不同的提升量,但是在峰值的延迟侧提供等量的升力。 由于进气凸轮具有两个提升模式,因此可以选择两个提升模式提供相等数量的升力的阶段,并且在等升程阶段之外的阶段提供不同数量的升程,以符合 内燃机。 因此,可以实现对发动机的特性的构成,因此根据发动机的运行状态不断地实现合适的阀特性。 因此,可以在发动机的输出性能,燃料消耗,燃烧稳定性等方面实现改进。
    • 4. 发明授权
    • Revolution speed control apparatus for an internal combustion engine
    • 用于内燃机的转速调速装置
    • US6105551A
    • 2000-08-22
    • US352336
    • 1999-07-13
    • Shuuji NakanoYoshihito MoriyaHideo NagaosaShinichiro Kikuoka
    • Shuuji NakanoYoshihito MoriyaHideo NagaosaShinichiro Kikuoka
    • F01L1/344F01L13/00F02D11/10F02D13/02F02D41/22F02D41/32F02D45/00
    • F02D31/009F01L1/34406F01L13/0042F02D41/221
    • A revolution speed control apparatus is provided. In particular, a variable valve drive apparatus for an internal combustion engine is provided, capable of continuously and variably setting a valve lift in conjunction with use of a three-dimensional cam. The apparatus provides a proper fail-safe system by setting an appropriate allowable engine revolution speed. An actual amount of adjustment in the position of a cam shaft, that is performed by a valve lift varying actuator, is detected by a shaft position sensor. Based on the actual amount of adjustment, the apparatus determines a cam profile of each intake cam contacting the corresponding cam follower. That is, the apparatus determines what portion of the oblique cam surface of each intake cam is providing a present valve lift. A valve lift is thus specified in addition to other parameters needed to determine an allowable revolution speed. These parameters include the valve spring load and the valve mass, for example. As a result, it becomes possible to set a precise allowable revolution speed. Based on the set allowable revolution speed, the apparatus determines whether the state of the actual revolution speed is appropriate. If the actual revolution speed is equal to or higher than the allowable revolution speed, the engine revolution speed can be properly reduced. This may be performed by implementing a fuel-cut.
    • 提供一种转速控制装置。 特别地,提供了一种用于内燃机的可变气门驱动装置,其能够连续地并且可变地设置使用三维凸轮的气门升程。 该装置通过设定适当的允许的发动机转速来提供适当的故障安全系统。 通过轴位置传感器检测由阀升程变化致动器执行的凸轮轴的位置的实际调整量。 基于实际的调整量,该装置确定每个进气凸轮接触相应的凸轮从动件的凸轮轮廓。 也就是说,该装置确定每个进气凸轮的倾斜凸轮表面的哪一部分提供当前的气门升程。 因此除了确定允许的转速所需的其他参数之外,还规定了气门升程。 这些参数包括例如阀弹簧负载和阀体积。 结果,可以设定精确的允许转速。 基于设定的允许转速,设备确定实际转速的状态是否合适。 如果实际转速等于或高于允许转速,则可以适当地减小发动机转速。 这可以通过实施燃料切割来执行。
    • 9. 发明授权
    • Rocking follower mechanism for three-dimensional cam
    • 摇摆随动机构三维凸轮
    • US06220209B1
    • 2001-04-24
    • US09351284
    • 1999-07-12
    • Hideo NagaosaYoshihito MoriyaShinichiro KikuokaShuuji Nakano
    • Hideo NagaosaYoshihito MoriyaShinichiro KikuokaShuuji Nakano
    • F04B2308
    • F01L1/143F01L13/0042
    • A rocking follower mechanism for a three-dimensional cam is provided. The rocking follower mechanism prevents a hit sound without generating excessive abrasion on a cam follower or a cam surface of the three-dimensional cam, while providing a wide portion for the cam follower. The cam follower is restricted from moving in the axial direction. The wide portion of the cam follower is formed at a position so as not to be brought into contact with the cam surface of the intake cam. As a result, collision of the cam surface against an angular portion defined by a thrust surface and an end surface of the wide portion, i.e., direct abutment against the end surface, can be avoided. Therefore, it is possible to prevent the hit sound without generating excessive abrasion on the cam surface of the intake cam or the cam follower itself. Accordingly, excellent riding comfort of the vehicle can be maintained.
    • 提供了一种用于三维凸轮的摆动从动机构。 摆动从动机构防止撞击声而不会在三维凸轮的凸轮从动件或凸轮表面上产生过度磨损,同时为凸轮从动件提供宽的部分。 凸轮从动件被限制在轴向移动。 凸轮从动件的宽部形成为不与进气凸轮的凸轮面接触的位置。 结果,可以避免凸轮表面与由推力表面和宽部分的端面限定的角部分(即直接抵靠端面)的碰撞。 因此,可以防止撞击声而不会对进气凸轮或凸轮从动件本身的凸轮表面产生过度磨损。 因此,可以保持车辆的良好的乘坐舒适性。