WO2012010081A1 - 连续可变气门升程的内燃机配气机构及其控制方法 - Google Patents

连续可变气门升程的内燃机配气机构及其控制方法 Download PDF

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Publication number
WO2012010081A1
WO2012010081A1 PCT/CN2011/077326 CN2011077326W WO2012010081A1 WO 2012010081 A1 WO2012010081 A1 WO 2012010081A1 CN 2011077326 W CN2011077326 W CN 2011077326W WO 2012010081 A1 WO2012010081 A1 WO 2012010081A1
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WIPO (PCT)
Prior art keywords
rocker arm
valve
valve lift
roller
cam
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Application number
PCT/CN2011/077326
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English (en)
French (fr)
Inventor
张侠
Original Assignee
奇瑞汽车股份有限公司
芜湖普威技研有限公司
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Application filed by 奇瑞汽车股份有限公司, 芜湖普威技研有限公司 filed Critical 奇瑞汽车股份有限公司
Publication of WO2012010081A1 publication Critical patent/WO2012010081A1/zh

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
    • F01L13/0021—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque by modification of rocker arm ratio

Definitions

  • the invention belongs to the technical field of internal combustion engine manufacturing, and particularly relates to a valve train of an internal combustion engine with continuously variable valve lift and a control method thereof. Background technique
  • the lift of the valve is generally fixed and immutable, but the requirements of the gas distribution system are different when the internal combustion engine, especially the gasoline engine, is operated under different working conditions and different rotational speeds, for example.
  • a smaller valve lift is required, which can generate a larger intake negative pressure and more eddy currents, allowing the air and fuel to be fully mixed, thereby increasing the torque output at low speeds; requiring a larger valve lift at high speeds.
  • the process allows the engine to breathe more smoothly and achieve a powerful power output at high speeds. Therefore, in order to meet the needs of different working conditions, a variable valve lift is required to match the output to improve output and improve. The purpose of fuel consumption.
  • the Chinese invention patent application "Engine Variable Valve Mechanism” (Application No.: 200410083212) discloses a variable valve mechanism having a switching mechanism for switching cams.
  • the displacement is transmitted from the second rocker arm to the first rocker arm, and the camshaft is placed obliquely above the rocker arm shaft.
  • the first abutting portion and the second abutting portion are placed in a dead zone between the upper side of the rocker shaft and one side of the cam shaft.
  • the first abutting portion is rotationally moved together with the first rocker arm in a direction in which the rocker arm rotates, and the second abutting portion and the second rocker arm are rotationally moved together.
  • the second abutment portion abuts against the first abutment portion from the direction of rotation of the rocker arm.
  • the switching mechanism of this scheme is relatively complicated in structure and expensive in manufacturing.
  • the Chinese utility model patent "New Variable Valve Lifting Mechanism” (Application No.: 02222780.6) discloses a novel variable valve lift mechanism including a cylinder head, a cam, a cam shaft that drives a cam to rotate, and is driven by a cam.
  • the valve tappet and the valve controlled by the tappet There is a high speed cam on the camshaft and two low speed cams symmetrically on either side of the high speed cam.
  • a return spring is mounted between the outer boss of the small tappet and the inner boss of the large tappet.
  • the small tappet plunger is located in the hydraulic chamber of the large tappet, and the small tappet is in contact with the high speed cam;
  • the large tappet plunger is located In the running rail of the tappet of the cylinder head, two valves are respectively connected at two ends of the large tappet, and the large tappet is in contact with the two low speed cams;
  • the hydraulic chamber communicates with the decompression chamber in the cylinder head through the hydraulic oil passage, and is installed on the hydraulic oil passage
  • solenoid valves There are solenoid valves.
  • An object of the present invention is to provide a continuously variable valve lift engine air distribution mechanism which is simple in structure and low in cost and can improve the output and fuel consumption of an internal combustion engine.
  • the continuously variable valve lift engine air distribution mechanism of the present invention comprises a cam driven by a cam shaft, a rocker arm driven by a cam, a valve controlled by a rocker arm, and a valve spring that drives a valve to return, one end of the rocker arm and The cam is abutted and tangential, and the other end of the rocker arm is movably connected to the top end of the valve.
  • the gas distribution structure is further provided with a support portion that can be moved along the length of the rocker arm under the control mechanism, and the top of the rocker arm
  • the surface is a smooth plane or a curved surface, and the bottom of the support portion is in close contact with the top surface of the rocker arm.
  • control mechanism refers to the stepping motor that drives the rotating shaft to rotate at a certain angle.
  • the forward and reverse movement of the stepping motor ensures the positive and negative movement of the rotating shaft.
  • the rotating shaft rotates through a certain angle, and the roller bracket moves on the curved surface, changing The roller position changes the valve lift.
  • the support portion corresponds to a fulcrum
  • the rocker arm acts as a lever under the action of the support portion
  • the two ends of the lever are respectively a cam and a valve
  • the end of the lever rises.
  • the distance is proportional to the distance between the end and the fulcrum, that is: when the support is located at the end of the rocker near the valve, the valve lift obtained when the cam rotates is the smallest; when the support is located at the end of the rocker near the cam
  • the valve lift obtained when the cam rotates is the largest.
  • the top surface of the rocker arm is a smooth plane or curved surface, which makes the movement of the support portion linearly continuous, so that the adjustment of the valve lift is also linearly continuous.
  • Another object of the present invention is to provide a control method for a valve train, and the specific technical solutions are as follows:
  • control mechanism When it is necessary to reduce the valve lift, the control mechanism is used to drive the support portion to rotate along the top surface of the rocker arm toward the valve direction;
  • control mechanism When it is necessary to increase the valve lift, the control mechanism is used to drive the support portion to rotate in the cam direction along the top surface of the rocker arm.
  • the support portion may have various forms, for example, a shaft column is disposed above the rocker arm, and the shaft column is mounted with a roller serving as the support portion, and the shaft column is driven by a stepping motor, and is rocked
  • the arm length direction is rotated, the top surface of the rocker arm is a curved surface, and the roller is in close contact with the top surface of the rocker arm.
  • the roller moves along the top surface of the rocker arm under the action of the motor, the distance between the roller and the valve is changed, so as to adjust the valve lift.
  • the control method of the above gas distribution mechanism is as follows:
  • the rocker arm and the valve are connected through the ball connecting pair.
  • One end of the rocker arm and the valve is provided with a spherical groove, and the bottom of the groove is provided with a card; the top end of the valve is a spherical connecting portion.
  • the bottom end of the spherical connecting portion is provided with an annular card slot, and the spherical connecting portion of the valve protrudes into the spherical groove of the rocker arm, and the card is engaged with the annular card slot of the spherical connecting portion.
  • two sides of the top surface of the rocker arm are provided with ribs for preventing the roller from coming off.
  • the valve train of the present invention can continuously change the distance between the valve and the cam and the support portion by being provided with a support portion that can be moved along the length of the rocker arm by the control mechanism, thereby continuously changing the lift of the valve, thereby improving the output of the internal combustion engine and The purpose of fuel consumption.
  • Embodiment 1 is a state diagram of Embodiment 1 of a valve train of the present invention when a valve lift is small;
  • Figure 2 is a view showing the state of the gas distribution mechanism of the first embodiment of the present invention when the valve lift is large;
  • FIG. 3 is a valve lift curve diagram of the minimum and maximum states of the gas distribution mechanism of the present invention
  • FIG. 4 is a schematic structural view of the rocker arm of Embodiment 1 of the gas distribution mechanism of the present invention.
  • Figure 5 is a schematic structural view of a valve of Embodiment 1 of the valve train of the present invention.
  • Fig. 6 is a schematic view showing the connection structure of the rocker arm and the valve of the first embodiment of the valve train of the present invention.
  • the valve train of the continuously variable valve lift engine of the present invention comprises a cam driven by a cam shaft, a rocker arm driven by the cam 1, a valve 3 controlled by the rocker arm 2, and a driving valve.
  • 3 return valve spring 4 one end of the rocker arm 2 abuts and is tangent to the cam 1, the other end of the rocker arm 2 is movably connected with the top end of the valve 3, and a stepper motor is arranged above the rocker arm 2
  • the rotating shaft 5, the rotating shaft 5 is mounted with a roller 7 through the roller bracket 6, and the top surface of the rocker arm 2 is a curved surface 8 corresponding to the movement track of the roller 7, and the curved surface 8 is in close contact with the roller 7. .
  • the shaft 5 can be fixed above the cylinder head by a bracket (the camshaft and the stepping motor are not shown in the drawings).
  • the curved surface 8 of the rocker arm 2 coincides with the movement track of the roller 7, that is, the curved surface 8 is concentric with the rotating shaft 5, so as to ensure that the position of the base circle where the valve 3 is located during the rotation of the rotating shaft 5 is unchanged, and therefore, The rotation of the rotating shaft 5 realizes different opening degrees of the valve 3 at different angles.
  • the valve lift curves of the minimum and maximum states of the valve train of the first embodiment are respectively shown.
  • the minimum valve lift range is 0.01 to 1 mm
  • the maximum valve lift range is 0.01 to 10 mm.
  • the lift range may also vary depending on the size and positional relationship between the components of the mechanism, due to the cam in the first embodiment. It is a simplified irregular cam, so the obtained lift curve has a large slope, and the curve can be re-optimized according to the shape of the optimized cam.
  • the rocker arm 2 and the valve 3 are connected by a ball joint pair: one end of the rocker arm 2 connected to the valve 3 is provided with a spherical groove 21, The bottom of the groove 21 is mounted with a card 22; the top end of the valve 3 is a spherical connecting portion 31, and the bottom end of the spherical connecting portion 31 is provided with an annular card slot 32.
  • the valve When the rocker arm 2 is connected with the valve 3, the valve is The spherical connecting portion 31 extends into the spherical recess 21 of the rocker arm, and the card 22 is snapped into the annular slot 32 of the spherical connecting portion.
  • the top surface of the rocker arm is provided with a rib for preventing the roller from coming off.
  • Embodiment 2 The difference between Embodiment 2 and Embodiment 1 is that: a shaft column is disposed above the rocker arm, and the shaft column is mounted with a roller serving as the support portion, and the shaft column is driven by a stepping motor and a horizontal transmission mechanism. Horizontal movement is performed along the length of the rocker arm, the top surface of the rocker arm is a plane, and the roller is in close contact with the top surface of the rocker arm.
  • stepper motor When it is necessary to increase the valve lift, the stepper motor is controlled to rotate, and the roller on the shaft column and the shaft column is moved along the top surface of the rocker arm toward the cam direction.
  • the minimum valve lift range is 0.01 to 1 mm
  • the maximum valve lift range is 0.01 to

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)

Description

连续可变气门升程的内燃机配气机构及其控制方法
技术领域
本发明属于内燃机制造技术领域， 特别涉及到一种连续可变气门升程的内燃机配 气机构及其控制方法。 背景技术
在往复式内燃机的配气系统上， 气门的升程一般是固定不可变的， 但是内燃机特 别是汽油机在不同的工况、 不同的转速下运行时， 对配气系统的要求也不一样， 例如， 低速时要求较小的气门升程， 能产生更大的进气负压及更多的涡流， 让空气和燃油充 分混合， 从而提高低转速时的扭力输出； 高速时要求较大的气门升程， 让发动机的呼 吸更顺畅， 以获得高转速时强大的功率输出， 因此， 为满足不同工况下的需求， 需要 有一套可变的气门升程与之相配合， 以达到提高输出和改善燃油消耗量的目的。
目前， 可改变气门升程的内燃机已经比较多， 例如， 中国发明专利申请 "发动机 可变气门机构" （申请号： 200410083212) 所公开的可变气门机构具有一个切换机构， 切换机构用于将凸轮位移从第二摇臂传递给第一摇臂， 凸轮轴被放置在摇臂轴的斜上 方。 第一邻接部分和第二邻接部分被放置在摇臂轴的上侧和凸轮轴的一侧之间的死区 中。 第一邻接部分沿着摇臂转动的方向和第一摇臂一起旋转移动， 第二邻接部分和第 二摇臂一起旋转移动。 第二邻接部分从摇臂的旋转方向紧靠着第一邻接部分。 在这样 构造的切换元件中， 第二摇臂的位移被传递给第一摇臂并减小了应力负担。 该种方案 的切换机构结构比较复杂， 制造成本也较昂贵。
又例如， 中国实用新型专利 "新型可变气门升程机构"（申请号： 02222780.6 ) 公 开一种新型可变气门升程机构， 包括汽缸盖、 凸轮、 带动凸轮转动的凸轮轴、 由凸轮 带动的气门挺柱和由挺柱控制的气门。 在凸轮轴上有一个高速凸轮和对称位于高速凸 轮两边的两个低速凸轮。 小挺柱的外凸台与大挺柱的内凸台之间安装复位弹簧， 小挺 柱柱塞位于大挺柱的液压腔内， 小挺柱与高速凸轮接触配合； 大挺柱柱塞位于汽缸盖 的挺柱运行轨道内， 大挺柱两端分别连接两个气门， 大挺柱与两低速凸轮接触配合； 液压腔通过液压油通道连通汽缸盖内的减压腔， 液压油通道上安装有电磁阀。 该种方 案在高速和低速时分别使用不同的凸轮驱动气门挺柱， 来改变配气相位和气门升程， 此结构非常复杂， 制造成本较高。 发明内容
本发明的一个目的是提供一种连续可变气门升程的内燃机配气机构， 该配气机构 结构简单、 成本低廉， 可以改善内燃机的输出和燃油消耗状况。
本发明连续可变气门升程的内燃机配气机构包括由凸轮轴带动的凸轮、 由凸轮带 动的摇臂、 由摇臂控制的气门及带动气门回位的气门弹簧， 所述摇臂的一端与凸轮抵 靠并相切， 摇臂的另一端与气门的顶端活动连接， 关键在于该配气结构还设置有可在 控制机构带动下沿摇臂长度方向移动的支撑部，所述摇臂的顶面为平滑的平面或弧面， 所述支撑部的底部与摇臂顶面紧密接触。 其中， 控制机构指的是带动转轴做具有一定 角度转动的步进电机， 步进电机的正反运动保证了转轴的正反运动， 转轴转过一定角 度， 滚轮支架会在弧面上运动， 改变滚子位置， 从而改变气门升程。
在上述配气机构中， 支撑部相当于一个支点， 而摇臂在支撑部的作用下就相当于 一个杠杆， 杠杆的两端分别是凸轮和气门， 根据杠杆的原理， 杠杆的端部的升程同该 端部与支点的距离成正比关系， 也就是说： 当支撑部位于摇臂接近气门的一端时， 凸 轮转动时得到的气门升程最小； 当支撑部位于摇臂接近凸轮的一端时， 凸轮转动时得 到的气门升程最大。 摇臂的顶面为平滑的平面或弧面， 可以使得支撑部的移动线性连 续， 从而使得气门升程的调整也为线性连续。
本发明的另一个目的是提供配气机构的控制方法， 具体技术方案如下：
A: 当需要减少气门升程时， 利用控制机构带动支撑部沿摇臂的顶面向气门方向 旋转移动；
B : 当需要增大气门升程时， 利用控制机构带动支撑部沿摇臂的顶面向凸轮方向 旋转移动。
上述支撑部可以有多种形式， 例如， 所述摇臂上方设置有一个轴柱， 所述轴柱安 装有充作所述支撑部的滚子， 所述轴柱利用步进电机带动， 沿摇臂长度方向做旋转运 动， 所述摇臂的顶面为弧面， 所述滚子与摇臂的顶面紧密接触。 当滚子在电机的带动 下沿摇臂顶面移动时， 就会改变滚子距离凸轮及气门的距离， 从而达到调整气门升程 的目的。 上述配气机构的控制方法如下：
A: 当需要减少气门升程时， 控制步进电机转动， 带动轴柱及轴柱上的滚子沿摇 臂的顶面向气门方向移动；
B : 当需要增大气门升程时， 控制步进电机转动， 带动轴柱及轴柱上的滚子沿摇 臂的顶面向凸轮方向移动。 上述传动机构较为复杂， 为了节省成本， 特别提出一种形式更为简单的支撑部： 所述摇臂上方设置有一个利用步进电机带动的转轴， 所述转轴通过滚轮支架安装有一 个充作所述支撑部的滚子， 摇臂的顶面为与所述滚子的运动轨迹相符的弧面， 所述滚 子与弧面紧密接触。 当转轴转动时， 就会带动滚子沿摇臂顶部的弧面移动， 从而改变 滚子距离凸轮及气门的距离， 达到调整气门升程的目的。
上述配气机构的控制方法如下：
A: 当需要减少气门升程时， 控制步进电机转动， 通过转轴带动滚子沿摇臂的顶 面向气门方向移动；
B : 当需要增大气门升程时， 控制步进电机转动， 通过转轴带动滚子沿摇臂的顶 面向凸轮方向移动。
为防止摇臂与气门脱离， 摇臂与气门通过球连接副连接， 所述摇臂与气门连接的 一端设置有一球形凹槽， 凹槽的底部安装有卡片； 所述气门的顶端为球形连接部， 所 述球形连接部的底端设置有环形卡槽，所述气门的球形连接部伸入摇臂的球形凹槽内， 所述卡片卡入球形连接部的环形卡槽。
进一步地， 所述摇臂的顶面两侧设置有防止滚子脱出的挡边。
本发明配气机构通过设置在控制机构带动下可沿摇臂长度方向移动的支撑部， 可 以连续改变气门及凸轮与支撑部的距离， 从而可以连续改变气门的升程， 实现改善内 燃机的输出和燃油消耗状况的目的。 附图说明
图 1是本发明配气机构实施例 1在气门升程较小时的状态图；
图 2是本发明配气机构实施例 1在气门升程较大时的状态图；
图 3是本发明配气机构实施例 1的最小和最大两种状态的气门升程曲线图； 图 4是本发明配气机构实施例 1的摇臂的结构示意图；
图 5是本发明配气机构实施例 1的气门的结构示意图；
图 6是本发明配气机构实施例 1的摇臂与气门的连接结构示意图。
附图标记：
1.凸轮 2.摇臂 3.气门 4.气门弹簧
5.转轴 6.滚轮支架 7.滚子 8.弧面
21.球形凹槽 22.卡片 31.球形连接部 32.环形卡槽 具体实施方式
下面结合具体实施例和附图详细地说明本发明。
实施例 1
如图 1、 2 所示， 本发明连续可变气门升程的内燃机配气机构包括由凸轮轴带动 的凸轮 1、 由凸轮 1带动的摇臂 2、 由摇臂 2控制的气门 3及带动气门 3回位的气门弹 簧 4， 所述摇臂 2的一端与凸轮 1抵靠并相切， 摇臂 2的另一端与气门 3的顶端活动 连接， 摇臂 2上方设置有一个利用步进电机带动的转轴 5， 所述转轴 5通过滚轮支架 6 安装有一个滚子 7， 摇臂 2的顶面为与滚子 7 的运动轨迹相符的弧面 8， 所述弧面 8 与滚子 7紧密接触。 转轴 5可以通过一个支架固定在汽缸盖的上方 （凸轮轴和步进电 机在附图中未画出）。
摇臂 2的弧面 8与滚子 7的运动轨迹相符， 即弧面 8与转轴 5同心， 这样可以确 保转轴 5在转动的过程中气门 3所处的基圆位置不变， 因此， 可以通过对转轴 5的旋 转实现不同角度下气门 3的不同开度。
本实施例的配气机构的控制方法的技术方案如下：
A: 如图 1所示， 当需要减少气门升程时， 控制步进电机转动， 通过转轴 5带动 滚子 7沿摇臂的顶面 8向气门 3方向移动；
B : 如图 2所示， 当需要增大气门升程时， 控制步进电机转动， 通过转轴 5带动 滚子 7沿摇臂的顶面 8向凸轮 1方向移动。
如图 3所示， 分别为本实施例 1的配气机构的最小和最大两种状态的气门升程曲 线图。最小气门升程的范围为 0.01〜lmm， 最大气门升程的范围为 0.01〜10mm， 根据 机构零部件间的尺寸及位置关系的不同， 升程范围亦可改变， 由于本实施例 1中的凸 轮是简化的非规则凸轮， 所以得到的升程曲线坡度较大， 可根据优化凸轮的形状以对 该曲线进行再优化。
如图 4、 5、 6所示， 为了防止摇臂 2与气门 3脱离， 摇臂 2与气门 3通过球连接 副连接： 所述摇臂 2与气门 3连接的一端设置有一球形凹槽 21， 凹槽 21的底部安装 有卡片 22; 所述气门 3的顶端为球形连接部 31， 所述球形连接部 31的底端设置有环 形卡槽 32， 在摇臂 2与气门 3连接时， 气门的球形连接部 31伸入摇臂的球形凹槽 21 内， 卡片 22卡入球形连接部的环形卡槽 32内， 所述摇臂的顶面两侧设置有防止滚子 脱出的挡边。 实施例 2
实施例 2与实施例 1的不同在于： 摇臂上方设置有一个轴柱， 所述轴柱安装有充 作所述支撑部的滚子， 所述轴柱利用步进电机及水平传动机构带动， 沿摇臂长度方向 做水平运动， 所述摇臂的顶面为平面， 所述滚子与摇臂的顶面紧密接触。
本实施例的配气机构的控制方法的技术方案如下：
A: 当需要减少气门升程时， 控制步进电机转动， 带动轴柱及轴柱上的滚子沿摇 臂的顶面向气门方向移动；
B : 当需要增大气门升程时， 控制步进电机转动， 带动轴柱及轴柱上的滚子沿摇 臂的顶面向凸轮方向移动。
在实施例 2中，最小气门升程的范围为 0.01〜lmm，最大气门升程的范围为 0.01〜
10mm。
最后应说明的是： 以上实施例仅用以说明本发明而非限制， 尽管参照较佳实施例 对本发明进行详细说明， 本领域的普通技术人员应当理解， 可以对本发明进行修改或 者等同替换， 而不脱离本发明的精神和范围， 其均应涵盖在本发明的权利要求范围当 中。

Claims

权利要求书
1. 一种连续可变气门升程的内燃机配气机构， 包括由凸轮轴带动的凸轮、 由凸轮 带动的摇臂、 由摇臂控制的气门及带动气门回位的气门弹簧， 所述摇臂的一端与凸轮 抵靠并相切， 摇臂的另一端与气门的顶端活动连接， 其特征在于： 该配气结构还设置 有在控制机构带动下沿摇臂长度方向移动的支撑部， 所述摇臂的顶面为平滑的平面或 弧面， 所述支撑部的底部与摇臂顶面紧密接触。
2. 根据权利要求 1所述的连续可变气门升程的内燃机配气机构， 其特征在于： 所 述摇臂上方设置有一个由步进电机带动的转轴， 所述转轴通过滚轮支架安装有一个充 作所述支撑部的滚子， 摇臂的顶面为与所述滚子的运动轨迹相符的弧面， 所述滚子与 弧面紧密接触。
3. 根据权利要求 1所述的连续可变气门升程的内燃机配气机构， 其特征在于： 所 述摇臂上方设置有一个轴柱， 所述轴柱安装有充作所述支撑部的滚子， 所述轴柱由步 进电机带动， 沿摇臂长度方向做旋转运动， 所述摇臂的顶面为弧面， 所述滚子与摇臂 的顶面紧密接触。
4. 根据权利要求 1至 3任一项所述的连续可变气门升程的内燃机配气机构，其特 征在于： 所述摇臂与气门连接的一端设置有一球形凹槽， 凹槽的底部安装有卡片； 所 述气门的顶端为球形连接部， 所述球形连接部的底端设置有环形卡槽， 所述气门的球 形连接部伸入摇臂的球形凹槽内， 所述卡片卡入球形连接部的环形卡槽。
5. 根据权利要求 2或 3所述的连续可变气门升程的内燃机配气机构，其特征在于： 所述摇臂的顶面两侧设置有防止滚子脱出的挡边。
6. 根据权利要求 2或 3所述的连续可变气门升程的内燃机配气机构，其特征在于： 最小气门升程范围为 0. 01〜lmm， 最大气门升程范围为 0. 01〜10mm。
7. 根据权利要求 1所述的连续可变气门升程的内燃机配气机构的控制方法， 其特 征在于： A: 当需要减少气门升程时， 利用控制机构带动支撑部沿摇臂的顶面向气门 方向移动；
B : 当需要增大气门升程时， 利用控制机构带动支撑部沿摇臂的顶面向凸轮方向 移动。
8. 根据权利要求 7所述的连续可变气门升程的内燃机配气机构的控制方法， 其特 征在于： A: 当需要减少气门升程时， 控制步进电机转动， 通过转轴带动滚子沿摇臂 的顶面向气门方向移动；
B : 当需要增大气门升程时， 控制步进电机转动， 通过转轴带动滚子沿摇臂的顶 面向凸轮方向移动。
9. 根据权利要求 7所述的连续可变气门升程的内燃机配气机构的控制方法， 其特 征在于： A: 当需要减少气门升程时， 控制步进电机转动， 带动轴柱及轴柱上的滚子 沿摇臂的顶面向气门方向移动；
B : 当需要增大气门升程时， 控制步进电机转动， 带动轴柱及轴柱上的滚子沿摇 臂的顶面向凸轮方向移动。
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