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    • 1. 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。
    • 6. 发明授权
    • Valve lifter for three-dimensional cam and variable valve operating apparatus using the same
    • 用于三维凸轮和使用其的可变气门操作装置的气门挺杆
    • US06244229B1
    • 2001-06-12
    • US09352953
    • 1999-07-14
    • Shuuji NakanoYoshihito MoriyaHideo NagaosaShinichiro Kikuoka
    • Shuuji NakanoYoshihito MoriyaHideo NagaosaShinichiro Kikuoka
    • F01L134
    • F01L1/0532F01L1/143F01L13/0042F01L2001/0537F01L2107/00
    • A valve lifter for a three-dimensional cam and a variable valve operating apparatus have enhanced flexibility in the design of a detent mechanism of the valve lifter for the three-dimensional cam, as well as enhanced durability. It is possible to form a thick wall portion which is sufficiently thick without increasing the weight by providing an offset between an outer peripheral surface and an inner peripheral surface of the valve lifter. Therefore, a sufficiently large projection can be mounted without deforming the valve lifter. This structure makes it possible to increase an area contacting a detent groove, reduce the surface pressure, and enhance the durability. The thick wall portion exists longer in an axial direction of the valve lifter, so the detent mechanism can be formed on the outer peripheral surface instead of a top surface. Therefore, the flexibility of design of the detent mechanism can be enhanced.
    • 用于三维凸轮的气门挺杆和可变气门操作装置在三维凸轮的气门挺杆的止动机构的设计中具有增强的灵活性,以及​​增强的耐用性。 通过在气门挺杆的外周面和内周面之间设置偏移,可以形成厚壁部分,而不增加重量。 因此,可以安装足够大的突起而不使气门挺杆变形。 这种结构使得可以增加与止动槽接触的面积,降低表面压力并提高耐久性。 厚壁部在阀提升器的轴向上存在较长的时间,因此可以在外周面而不是上表面上形成止动机构。 因此,可以提高制动机构的设计灵活性。