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1.发明授权公开(公告)号：US06360704B1
公开(公告)日：2002-03-26
申请号：US09506958
申请日：2000-02-18
IPC分类号： F01L100
CPC分类号： F01L13/0042 , F01L1/08 , F01L1/34 , F01L1/344
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US06517601B1
公开(公告)日：2003-02-11
申请号：US09654270
申请日：2000-09-01
IPC分类号： B22F312
CPC分类号： F01L13/0042 , F01L1/047 , F01L1/08
摘要： A three-dimensional cam has a cam profile surface shape that changes along a rotating axis of the cam, and is produced by net-shape-sintering. The sintered density of a sintering material at the time of net-shape-sintering is set to 7 to 7.4 g/cm3 to achieve a hole rate of the cam profile surface within the range of 5 to 10%. The three-dimensional cam has an improved durability, while securing high productivity.
摘要翻译： 三维凸轮具有沿着凸轮的旋转轴线变化的凸轮轮廓表面形状，并且通过网状烧结来制造。 将网状烧结时的烧结材料的烧结密度设定为7〜7.4g / cm 3，以使凸轮轮廓面的孔率在5〜10％的范围内。 三维凸轮具有改善的耐久性，同时确保高生产率。
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3.发明授权公开(公告)号：US06386155B2
公开(公告)日：2002-05-14
申请号：US09962682
申请日：2001-09-26
IPC分类号： F01L100
CPC分类号： F01L13/0042 , F01L1/08 , F01L1/34 , F01L1/344
摘要： 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.
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公开(公告)号：US6105551A
公开(公告)日：2000-08-22
申请号：US352336
申请日：1999-07-13
CPC分类号： F02D31/009 , F01L1/34406 , F01L13/0042 , F02D41/221
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US06318313B1
公开(公告)日：2001-11-20
申请号：US09394529
申请日：1999-09-10
IPC分类号： F01L1300
CPC分类号： F02D13/0207 , F01L1/34 , F01L13/0042 , F01L2800/00 , F01L2800/11 , F02D13/0211 , F02D13/0219 , F02D13/0226 , F02D13/0246 , F02D13/0261 , F02D13/0265 , Y02T10/18
摘要： A valve train for an internal combustion engine has a variable valve performance mechanism for changing the valve open angle of at least one set of intake valves and exhaust valves. The valve train further includes an electronic control unit (ECU) for controlling the variable valve performance mechanism and a sensor for detecting the running state of the engine. The ECU judges whether there is a malfunction in the engine based on detection signals from the sensor. If there is a malfunction in the engine, the ECU actuates the variable valve performance mechanism to decrease the valve overlap thereby performing a failsafe. The ECU also advances the closing timing of the intake valves. Alternatively, the ECU retards the opening timing of the exhaust valve.
摘要翻译： 用于内燃机的气门机构具有用于改变至少一组进气门和排气门的阀开度的可变阀性能机构。 气门机构还包括用于控制可变阀性能机构的电子控制单元（ECU）和用于检测发动机的运行状态的传感器。 ECU根据来自传感器的检测信号判断发动机是否发生故障。 如果发动机发生故障，则ECU启动可变阀性能机构以减小阀重叠，从而执行故障保护。 ECU还提前进气阀的关闭时机。 或者，ECU延迟排气门的打开正时。
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6.发明授权Valve lifter for three-dimensional cam and variable valve operating apparatus using the same 失效用于三维凸轮和使用其的可变气门操作装置的气门挺杆公开(公告)号：US06244229B1
公开(公告)日：2001-06-12
申请号：US09352953
申请日：1999-07-14
IPC分类号： F01L134
CPC分类号： F01L1/0532 , F01L1/143 , F01L13/0042 , F01L2001/0537 , F01L2107/00
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US6164256A
公开(公告)日：2000-12-26
申请号：US369830
申请日：1999-08-09
CPC分类号： F01L1/143 , F01L13/0042 , Y10T74/2107
摘要： A cam follower mechanism for transmitting the movement of a three-dimensional cam to an intake valve. The cam operates a valve through a cam follower mechanism. A valve lifter includes a guide groove having an arcuate cross section. A cam follower is received in the guide groove and engages the cam. The cam follower can pivot about a pivoting axis. The cam follower has an arcuate cross section. The follower includes tapered surfaces, which are inclined less than ninety degrees with respect to the pivoting axis. Contact between the tapered surfaces and the guide groove prevents the cam follower from moving in the direction of the pivoting axis.
摘要翻译： 一种用于将三维凸轮的运动传递到进气门的凸轮从动机构。 凸轮通过凸轮从动机构操作阀。 气门挺杆包括具有弓形横截面的导向槽。 凸轮随动件被容纳在引导槽中并与凸轮接合。 凸轮从动件可围绕枢转轴线枢转。 凸轮从动件具有弓形横截面。 从动件包括相对于枢转轴线倾斜小于九十度的锥形表面。 锥形表面和引导槽之间的接触防止凸轮从动件沿枢转轴线的方向移动。
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公开(公告)号：US06561150B1
公开(公告)日：2003-05-13
申请号：US10048791
申请日：2002-02-05
IPC分类号： F01L134
CPC分类号： F01L13/0042 , F01L1/08 , F01L1/34 , F01L1/34406 , F01L2001/0537 , F01L2800/00 , F02B2275/18
摘要： The cam face of an intake cam has a main lift portion, which causes an intake valve to execute a basic lift operation, and a sub lift portion, which assists the action of the main lift portion. The main lift portion and the sub lift portion continuously change in an axial direction of the intake cam. An axial movement mechanism moves the intake cam in the axial direction to adjust the axial position of the cam face that drives the intake valve. The axial movement of the intake cam results in the valve being given a variety of valve lift characteristics in the form of a combination of a cam lift pattern realized by the main lift portion and a cam lift pattern realized by the sub lift portion. Therefore, various engine performances required according to the running conditions of the engine can be fully satisfied by the valve characteristics.
摘要翻译： 进气凸轮的凸轮面具有主升程部分，其使进气门执行基本升程操作，辅助提升部分有助于主提升部分的作用。 主提升部分和副提升部分在进气凸轮的轴向方向上连续变化。 轴向运动机构使进气凸轮沿轴向移动，以调节驱动进气门的凸轮面的轴向位置。 进气凸轮的轴向运动导致阀被赋予各种气门升程特性，其形式为通过主提升部分实现的凸轮提升模式和由副提升部分实现的凸轮提升模式的组合。 因此，根据发动机的运行条件需要的各种发动机性能可以通过阀特性完全满足。
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公开(公告)号：US06435149B1
公开(公告)日：2002-08-20
申请号：US09963561
申请日：2001-09-27
IPC分类号： F01L1300
摘要： A valve train for an internal combustion engine has a variable valve performance mechanism for changing the valve open angle of at least one set of intake valves and exhaust valves. The valve train further includes an electronic control unit (ECU) for controlling the variable valve performance mechanism and a sensor for detecting the running state of the engine. The ECU judges whether there is a malfunction in the engine based on detection signals from the sensor. If there is a malfunction in the engine, the ECU actuates the variable valve performance mechanism to decrease the valve overlap thereby performing a failsafe. The ECU also advances the closing timing of the intake valves. Alternatively, the ECU retards the opening timing of the exhaust valves.
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10.发明授权公开(公告)号：US06415753B1
公开(公告)日：2002-07-09
申请号：US09634882
申请日：2000-08-07
IPC分类号： F01L134
CPC分类号： F01L1/34 , F01L1/344 , F01L1/46 , F01L13/0042
摘要： A variable valve apparatus of an internal combustion engine is capable of realizing more precise valve characteristic control by reducing the error in-detection of the amount of movement of a camshaft caused by a difference in the rate of thermal expansion. The variable valve apparatus has a camshaft that is supported so as to be rotatable and slidable in a direction of an axis thereof and that has three-dimensional cams whose cam profile continuously changes in the direction of the axis. The apparatus also has an actuator for moving the camshaft in the direction of its axis. The apparatus further has a camshaft position sensor provided in a cylinder head, a detected portion provided in the camshaft, and a camshaft movement amount detection portion for detecting the amount of movement of the camshaft in the direction of the axis. The camshaft movement amount detection portion is provided near a camshaft reference position.
摘要翻译： 内燃机的可变气门装置能够通过减少由热膨胀率的差异引起的凸轮轴的运动量的检测误差来实现更精确的阀特性控制。 可变气门装置具有凸轮轴，该凸轮轴被支撑成能够在其轴线方向上旋转和滑动，并且具有凸轮轮廓在轴线方向上连续变化的三维凸轮。 该装置还具有用于沿其轴线方向移动凸轮轴的致动器。 该装置还具有设置在气缸盖中的凸轮轴位置传感器，设置在凸轮轴中的检测部分和用于检测凸轮轴在轴线方向上的移动量的凸轮轴移动量检测部。 凸轮轴移动量检测部分设置在凸轮轴参考位置附近。
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