WO2022213431A1 - 一种连续可变气门升程控制装置和发动机 - Google Patents

一种连续可变气门升程控制装置和发动机 Download PDF

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Publication number
WO2022213431A1
WO2022213431A1 PCT/CN2021/090215 CN2021090215W WO2022213431A1 WO 2022213431 A1 WO2022213431 A1 WO 2022213431A1 CN 2021090215 W CN2021090215 W CN 2021090215W WO 2022213431 A1 WO2022213431 A1 WO 2022213431A1
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Prior art keywords
rocker arm
valve lift
cam
continuously variable
adjustment
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PCT/CN2021/090215
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English (en)
French (fr)
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李雷夫
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李雷夫
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Application filed by 李雷夫 filed Critical 李雷夫
Publication of WO2022213431A1 publication Critical patent/WO2022213431A1/zh

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    • 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
    • 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
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/12—Transmitting gear between valve drive and valve
    • F01L1/18—Rocking arms or levers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
    • F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • the invention belongs to the technical field of engines, and in particular relates to a continuously variable valve lift control device and an engine.
  • Engine valve lift technology is a popular research field of engine fuel efficiency in recent years.
  • the existing known engine variable valve lift control technologies include stage variable type and continuously variable type, among which the continuous variable type is divided into mechanical type and hydraulic type;
  • the stage variable type in the current prior art Valve lift control technology 1) It can only discretely control the lift of the valve in stages, two-stage and three-stage are common, and the valve lift cannot be changed continuously, resulting in non-linear control of engine operating conditions, which is not conducive to smooth driving; 2) Relying on multiple sets of cams with different lift sizes to realize the change of valve lift, the camshaft is very complicated, the processing is difficult, the number of parts and components increases significantly, and the cost increases;
  • the currently known mechanical continuously variable valve lift control technologies all have a common feature, which is achieved by adding a set of mechanisms (intermediate rocker arms) between the valve rocker arm and the camshaft of the traditional fixed valve lift engine.
  • Variable valve lift this structure leads to a very complex mechanism, a large increase in the number of parts, and poor high-speed dynamic response rigidity of the system.
  • the complex valve mechanism leads to a significant increase in the height of the engine cylinder head and a significant increase in manufacturing costs; 2 )
  • the hydraulic continuously variable valve lift control technology relies on the opening and closing of the solenoid valve to control the opening and closing of the valve with the hydraulic cylinder. At the same time, the cost is expensive, and the later use and maintenance are complicated.
  • the present invention provides a continuously variable valve lift control device and an engine, which can have the characteristics of simplicity, reliability, low cost and small volume and space.
  • the present invention provides a continuously variable valve lift control device, comprising a valve assembly, an adjustment cam, a rocker arm and a drive cam, wherein the rocker arm can swing around its first end located at the adjustment cam, The second end of the rocker arm is connected with the valve assembly, and the driving cam acts on the rocker arm and drives the second end of the rocker arm to swing around the first end to drive the valve assembly to move up and down.
  • the rocker arm provides an action point that abuts and interacts with the driving cam, and the rotation of the adjusting cam can change the height of the action point.
  • the point of action is a roller disposed between the first end and the second end of the rocker arm, and the roller abuts the rim of the driving cam.
  • the first end of the rocker arm is rotatably arranged on the adjustment cam, specifically, the first end of the rocker arm is rotatably arranged at the non-rotation center of the adjustment cam, and the adjustment The rotation of the cam can drive the first end of the rocker arm to swing in a circular arc, and the height of the roller can be changed while adjusting the posture of the rocker arm.
  • the roller is located in the center of the rocker arm.
  • the adjustment swing arm is connected to the swing arm through a hinge point, and the rotation of the adjustment cam can act on the first end of the adjustment swing arm to make the adjustment swing arm Rotating around the hinge point, the action point is the roller arranged on the second end of the adjusting swing arm.
  • the first end of the rocker arm is hinged on the rotating shaft of the adjusting cam, and the first end of the adjusting rocker arm abuts against and interacts with the adjusting cam;
  • the first end of the adjustment swing arm is hinged on the rotating shaft of the adjustment cam, and the first end of the swing arm abuts against the adjustment cam to interact;
  • the rotation of the adjustment cam can drive the roller on the second end of the adjustment swing arm to swing in a circular arc, and the angle between the adjustment swing arm and the swing arm is changed while changing the second end of the adjustment swing arm.
  • the height of the rocker arm does not change during this process.
  • the hinge point is located in the center of the rocker arm.
  • the center of rotation of the driving cam is located just above the point of action.
  • the present invention also provides an engine using the above continuously variable valve lift control device.
  • the invention uses the method of mechanical structure control to realize the continuously variable valve lift. Compared with the prior art, the number of parts of the action actuator is greatly reduced, the weight of the mechanism is greatly reduced, the action response of the mechanism is fast and reliable, and it can be used in a fast, stable, continuous and uninterrupted state. While switching the valve lift, the number of parts and the difficulty of assembly are significantly reduced, so that the overall cost of the engine valve lift mechanism is significantly reduced, which is conducive to large-scale promotion and application in the market.
  • Embodiment 1 is a schematic diagram of the principle of Embodiment 1 of the continuously variable valve lift control device of the present invention, which shows the posture of the roller in the first position;
  • Embodiment 1 is a schematic diagram of the principle of Embodiment 1 of the continuously variable valve lift control device of the present invention, which shows the posture of the roller in the second position;
  • FIG. 3 is a schematic diagram of a change process of valve lift in Embodiment 1 of the continuously variable valve lift control device of the present invention
  • Embodiment 1 of the continuously variable valve lift control device of the present invention
  • Embodiment 1 is another schematic structural diagram of Embodiment 1 of the continuously variable valve lift control device of the present invention.
  • Embodiment 6 is a schematic diagram of the principle of Embodiment 2 of the continuously variable valve lift control device of the present invention, which shows that a large angle is formed between the adjustment swing arm and the rocker arm;
  • Embodiment 7 is a schematic diagram of the principle of Embodiment 2 of the continuously variable valve lift control device of the present invention, which shows that a small angle is formed between the adjustment swing arm and the rocker arm;
  • FIG. 8 is a schematic diagram of a change process of valve lift in Embodiment 2 of the continuously variable valve lift control device of the present invention.
  • Embodiment 9 is a schematic structural diagram of Embodiment 2 of the continuously variable valve lift control device of the present invention.
  • FIG. 10 is another schematic structural diagram of Embodiment 2 of the continuously variable valve lift control device of the present invention.
  • This embodiment provides a mechanical continuously variable valve lift control device, which drives the valve assembly to move up and down by driving the rocker arm swinging around its own end to continuously swing, as shown in FIG. 1 and FIG. 2 .
  • the action principle is:
  • the eccentric swing pin O1 rotates synchronously with the valve lift adjustment eccentric shaft R1, and when the valve lift adjustment eccentric shaft R1 rotates around its center of rotation, the height of the eccentric swing pin O1 can change, thereby changing the position at the rocker arm L1.
  • the effective stroke of the roller W1 is changed. Under the rotary drive of the driving cam (the driving cam provides a vertical downward force F1, so that the valve assembly obtains a vertical downward force F2), the continuous valve lift is realized. Variable, that is, the actual lift h2 of the valve in FIG. 2 is greater than the actual lift h1 of the valve in FIG. 1 .
  • Fig. 3 compares the schematic diagrams showing that the phase of the valve lift adjustment eccentric shaft R1 changes from 0° to 90°, 180° and 270° in turn. It can be seen that the maximum valve lift The lift is different, that is, continuously variable valve lift can be achieved.
  • FIG. 1 A specific structure of a continuously variable valve lift control device based on the above principles is shown in FIG. 1
  • the rocker arm 103 has a first end 105 and a second end 106 , wherein the second end 106 of the rocker arm 103 is connected with the valve assembly 101 , and the first end 105 of the rocker arm 103 is rotatably disposed on the adjusting cam 102 At this point, the rocker arm 103 as a whole can swing around its first end 105 .
  • the first end 105 of the rocker arm 103 can be directly hinged on the rotating shaft of the adjusting cam 102, and the first end 105 of the rocker arm 103 can also be overlapped (for example, the first end 105 is provided with a shaft matching (circular arc structure) on the rotating shaft of the adjusting cam 102, the first end 105 of the rocker arm 103 can also be rotatably connected with the rotating shaft of the adjusting cam 102 through the connecting mechanism, and the other can drive the rocker arm through the rotation of the adjusting cam 102
  • the structure of the height change of the first end 105 of the 103 should be within the scope of protection, and will not be listed and expanded here.
  • the driving cam 104 is located on the upper side of the rocker arm 103
  • the valve assembly 101 is located on the lower side of the rocker arm 103
  • the rocker arm 103 provides an action point for abutting and interacting with the driving cam 104 to adjust the rotation of the cam 102 The height of this point of action can be changed.
  • a self-rotating roller 107 is provided on the rocker arm 103, the roller 107 provides the point of action, and the roller 107 is provided on the first end 105 and the second end of the rocker arm 103 by means of, for example, a pin connection Between 106 , preferably, the roller 107 is located in the middle of the rocker arm 103 , the rotation center of the driving cam 104 is located just above the roller 107 , and the roller 107 is in contact with the rim of the driving cam 104 .
  • the valve assembly 101 is provided with a rebound structure to keep the driving cam 104 in constant contact with the roller 107 through the rocker arm 103 .
  • the cam 104 is driven to act on the roller 107 in the middle of the rocker arm 103, and the second end 106 of the rocker arm 103 is driven to swing around the first end 105 of the rocker arm 103 to drive the valve assembly 101 to move up and down.
  • the rotation can drive the first end 105 of the rocker arm 103 to swing in a circular arc, and the height of the roller 107 is changed while the posture of the rocker arm 103 is adjusted, and the effective stroke of the roller 107 is changed. down to obtain different valve lifts.
  • the structural form of the rocker arm 103 can be designed according to actual requirements to adapt to different valve structures, for example, in FIG.
  • the size of the included angle, the corresponding shapes and sizes of other components in this embodiment can be adaptively adjusted according to design requirements, and will not be expanded here.
  • This embodiment provides a mechanical continuously variable valve lift control device, which drives the valve assembly to move up and down by driving the rocker arm swinging around its own end to continuously swing, as shown in FIG. 6 and FIG. 7 .
  • the action principle is:
  • the left end of the rocker arm L2 is fixed and hinged to form a swing fulcrum
  • the height of the eccentric swing pin O2 can be changed, thereby changing the angle between the adjustment swing arm L3 and the swing arm L2, that is, the angle in Figure 6 ⁇ 1 is greater than the included angle ⁇ 2 in Fig. 7, the height change of the eccentric swing pin O2 will be transmitted through the lever form to form the height position change of the right end of the adjustment swing arm L3;
  • the effective stroke of the right end of the adjustment swing arm L3 is changed.
  • the driving cam provides a vertical downward force F3, so that the valve assembly obtains a vertical downward force F4
  • the valve is realized.
  • the lift is continuously variable, that is, the actual valve lift h3 in FIG. 6 is greater than the actual valve lift h4 in FIG. 7 .
  • Fig. 8 compares the schematic diagrams showing that the phase of the valve lift adjustment eccentric shaft R2 changes from 0° to 45°, 90° and 180° in turn. It can be seen that the maximum valve lift The lift is different, that is, continuously variable valve lift can be achieved.
  • FIG. 1 A specific structure of a continuously variable valve lift control device based on the above principles is shown in FIG. 1
  • the rocker arm 203 has a first end 206 and a second end 207 , wherein the second end 207 of the rocker arm 203 is connected with the valve assembly 201 , and the first end 206 of the rocker arm 203 is hinged on the rotating shaft of the adjusting cam 202 Above, the rocker arm 203 can swing around its first end 206 as a whole.
  • the driving cam 205 is located on the upper side of the rocker arm 203
  • the valve assembly 201 is located on the lower side of the rocker arm 203
  • the adjusting rocker arm 204 is connected to the rocker arm 203 through a hinge point 208 (eg, a pin connection), wherein the A hinge point 208 is preferably located in the center of the rocker arm 203 , the first end 210 of the adjustment swing arm 204 abuts and interacts with the adjustment cam 202 , and the second end 211 of the adjustment swing arm 204 is provided with a roller 209 , the roller 209 provides an action point for abutting and interacting with the driving cam 205 .
  • a hinge point 208 eg, a pin connection
  • the center of rotation of the driving cam 205 is located just above the roller 209, and the roller 209 is in contact with the rim of the driving cam 205, wherein a rebound structure is provided on the valve assembly 201 to maintain the driving through the rocker arm 203.
  • the cam 205 is in constant contact with the roller 209 .
  • the rotation of the adjustment cam 202 can drive the roller 209 on the second end 211 of the adjustment swing arm 204 to swing in a circular arc (around the rotation axis of the adjustment cam 202 ).
  • the height of the second end 211 of the swing arm 204 is adjusted while the included angle between 203 is changed, and the posture of the swing arm 203 does not change during this process.
  • the driving cam 205 acts on the roller 209 on the second end 211 of the adjusting swing arm 204, and the second end 207 of the rocker arm 203 is driven to swing around the first end 206 thereof to drive the valve assembly 201 to perform Moving up and down, the rotation of the adjustment cam 202 can drive the roller 209 on the adjustment swing arm 204 to swing along the arc trajectory (centered on the hinge point 208 of the adjustment swing arm 204 and the swing arm 203), while maintaining the position of the swing arm 203 At the same time, the height of the roller 209 on the adjustment swing arm 204 is changed, and the effective stroke of the roller 209 is changed. Under the action of the driving cam 205, different valve lifts are obtained.
  • the first end 206 of the rocker arm 203 is hinged on the rotating shaft of the adjusting cam 202, and the first end 210 of the adjusting rocker arm 204 abuts and interacts with the adjusting cam 202.
  • the first end 210 of the adjustment swing arm 204 may also be hinged on the rotating shaft of the adjustment cam 202 , and the first end 206 of the swing arm 203 abuts against and interacts with the adjustment cam 202 .
  • the structural form of the adjustment swing arm 204 can be designed according to actual needs to adapt to different valve structures, for example, in FIG.
  • the corresponding shapes and sizes of other components in this embodiment can be adaptively adjusted according to design requirements, and will not be expanded here.

Abstract

一种连续可变气门升程控制装置，包括气门组件（101）、调节凸轮（102）、摇臂（103）和驱动凸轮（104），摇臂（103）能够围绕其位于调节凸轮（102）处的第一端部（105）进行摆动，摇臂的第二端部（106）与气门组件（101）相连接，驱动凸轮（104）作用于摇臂（103）上并驱动摇臂（103）的第二端部（106）围绕其第一端部（105）进行摆动以带动气门组件（101）进行上下运动。还公开了一种发动机。在实际应用中，可在快速稳定、连续不间断切换气门升程的同时，降低零部件数量和装配难度。

Description

一种连续可变气门升程控制装置和发动机 技术领域
本发明属于发动机技术领域，具体涉及一种连续可变气门升程控制装置和发动机。
背景技术
发动机气门升程技术是近年来比较热门发动机燃效研究领域。
现有已知的发动机可变气门升程控制技术有阶段式可变式和连续可变式，其中连续可变式又有机械式和液压式之分；目前现有技术中的阶段可变式气门升程控制技术1)只能阶段性离散控制气门的升程，常见两段式和三段式，无法连续改变气门升程，导致发动机工况控制不线性，不利于驾驶的平顺；2)依靠多组不同升程大小的凸轮实现气门升程的改变，导致凸轮轴非常复杂，加工困难，零部件数量显著上升，成本增加；现有技术中的连续可变式气门升程控制技术1)目前已知的机械式连续可变式气门升程控制技术都有一个共同特点，都是在传统固定气门升程发动机的气门摇臂和凸轮轴之间增加一组机构(中间摇臂)来实现气门升程的可变；这种结构导致机构非常复杂，零部件数大幅增加，系统高速动态响应刚性不好，复杂的配气机构导致发动机缸盖高度显著增大，制造成本亦显著增加；2)液压式的连续可变式气门升程控制技术依靠电磁阀的通断用液压油缸控制气门的开闭，系统十分复杂，加工精度要求高，对油液的清洁度要求苛刻，不利于提升可靠性；同时造价昂贵，后期使用维护保养复杂。
现有技术中的“气门可变升程”技术均无法同时兼备“简单可靠”、 “成本低廉”和“体积空间小”的特性，因此需要提供一种全新的连续可变的发动机气门升程控制装置。
发明内容
针对现有技术的缺陷，本发明提供了一种连续可变气门升程控制装置和发动机，能够兼备简单可靠、成本低廉和体积空间小的特性。
为了实现上述目的，本发明提供了一种连续可变气门升程控制装置，包括气门组件、调节凸轮、摇臂和驱动凸轮，摇臂能够围绕其位于调节凸轮处的第一端部进行摆动，摇臂的第二端部与气门组件相连接，驱动凸轮作用于摇臂上并驱动摇臂的第二端部围绕其第一端部进行摆动以带动气门组件进行上下运动。
根据本发明的另一种具体实施方式，摇臂提供与驱动凸轮相抵接而相互作用的一作用点，调节凸轮的回转能够改变该一作用点的高度。
根据本发明的另一种具体实施方式，该一作用点为设置于摇臂的第一端部和其第二端部之间的滚轮，滚轮与驱动凸轮的轮缘相抵接。
根据本发明的另一种具体实施方式，摇臂的第一端部可转动地设置在调节凸轮上，具体为摇臂的第一端部可转动地设置在调节凸轮的非回转中心处，调节凸轮的回转能够带动摇臂的第一端部以圆弧轨迹进行摆动，在调整摇臂位姿的同时改变滚轮的高度。
根据本发明的另一种具体实施方式，滚轮位于摇臂的中央。
根据本发明的另一种具体实施方式，进一步包括调节摆臂，调节摆臂通过一铰接点连接在摇臂上，调节凸轮的回转能够作用于调节摆臂的第一端部而使调节摆臂围绕该一铰接点转动，该一作用点为设置于调节摆臂的第二端部上的滚子。
根据本发明的另一种具体实施方式，摇臂的第一端部铰接在调节凸轮的回转轴上，调节摆臂的第一端部与调节凸轮之间抵接而相互作用；或
调节摆臂的第一端部铰接在调节凸轮的回转轴上，摇臂的第一端部与调节凸轮之间抵接而相互作用；
调节凸轮的回转能够带动调节摆臂的第二端部上的滚子以圆弧轨迹进行摆动，在改变调节摆臂与摇臂之间的夹角的同时改变调节摆臂的第二端部的高度，此过程中摇臂的位姿不产生变化。
根据本发明的另一种具体实施方式，该一铰接点位于摇臂的中央。
根据本发明的另一种具体实施方式，驱动凸轮的回转中心位于该一作用点的正上方。
本发明同时提供一种采用上述的连续可变气门升程控制装置的发动机。
本发明具备以下有益效果：
本发明使用机械结构控制的方法实现气门升程的连续可变，相比现有技术，动作执行机构的零件数量大幅减少，机构重量大幅降低，机构动作响应快速可靠，可在快速稳定连续不间断切换气门升程的同时，显著降低零部件数量和装配难度，使发动机气门升程机构整体成本显著降低，利于市场大规模推广应用。
下面结合附图对本发明作进一步的详细说明。
附图说明
图1是本发明连续可变气门升程控制装置实施例1的原理示意图，其显示出滚轮处于第一位置的位姿；
图2是本发明连续可变气门升程控制装置实施例1的原理示意图，其显示出滚轮处于第二位置的位姿；
图3是本发明连续可变气门升程控制装置实施例1气门升程的变化过程示意图；
图4是本发明连续可变气门升程控制装置实施例1的一种结构示意图；
图5是本发明连续可变气门升程控制装置实施例1的另一结构示意图；
图6是本发明连续可变气门升程控制装置实施例2的原理示意图，其显示出调节摆臂与摇臂之间的形成了较大夹角；
图7是本发明连续可变气门升程控制装置实施例2的原理示意图，其显示出调节摆臂与摇臂之间的形成了较小夹角；
图8是本发明连续可变气门升程控制装置实施例2气门升程的变化过程示意图；
图9是本发明连续可变气门升程控制装置实施例2的一种结构示意图；
图10是本发明连续可变气门升程控制装置实施例2的另一结构示意图。
具体实施方式
为了能够更清楚地理解本发明的上述目的、特征和优点，下面结合附图和具体实施方式对本发明进行进一步的详细描述。需要说明的是，在不冲突的情况下，本申请的实施例及实施例中的特征可以相互组合。
在下面的描述中阐述了很多具体细节以便于充分理解本发明，但是，本发明还可以采用其他不同于在此描述的其他方式来实施，因此，本发明的保护范围并不限于下面公开的具体实施例的限制。
实施例1
本实施例提供了一种机械式连续可变气门升程控制装置，通过驱动围绕其自身一端部摆动的摇臂进行连续摆动以驱动气门组件进行上下运动，如图1、图2所示，其动作原理为：
以与摇臂L1的左端铰接的偏心摆销O1为摆动支点；
其中偏心摆销O1随着气门升程调节偏心轴R1进行同步转动，气门升程调节偏心轴R1围绕其回转中心进行转动时，可使偏心摆销O1的高度发生变化，进而改变位于摇臂L1上的滚轮W1的位置高度；
滚轮W1下压的有效行程发生改变，在驱动凸轮的回转驱动下(驱动凸轮提供竖直向下的作用力F1，使得气门组件获得竖直向下的作用力F2)，实现气门升程的连续可变，即图2中气门实际升程h2大于图1中气门实际升程h1。
具体的，为了更好的显示上述变化过程，图3对比显示出气门升程调节偏心轴R1的相位由0°依次变化到90°、180°和270°的示意图，可以看出，气门的最大升程是不同的，也即可以实现气门升程的连续可变。
一种基于上述原理的连续可变气门升程控制装置的一种具体结构如图4所示，包括气门组件101、调节凸轮102、摇臂103和驱动凸轮104。
摇臂103具有第一端部105和第二端部106，其中摇臂103的第二端部106与气门组件101相连接，摇臂103的第一端部105可转动地设置在调节凸轮102处，摇臂103整体能够围绕其第一端部105进行摆动。
具体的，摇臂103的第一端部105可以直接铰接在调节凸轮102的回转轴上，摇臂103的第一端部105也可以搭接(例如在第一端部105设置有与轴配合的圆弧结构)在调节凸轮102的回转轴上，摇臂103的第一端部105还可以通过连接机构与调节凸轮102的回转轴进行转动连接，其他通过调节凸轮102的回转能够带动摇臂103的第一端部105产生高度变化的结构理应在保护范围之内，这里不再进行一一列举和展开。
进一步的，驱动凸轮104位于摇臂103的上方一侧，气门组件101位于摇臂103的下方一侧，摇臂103提供与驱动凸轮104相抵接而相互作用的一作用点，调节凸轮102的回转能够改变该一作用点的高度。
再进一步的，在摇臂103上设有自转动的滚轮107，滚轮107提供该一作用点，滚轮107通过例如销连接的方式设置于摇臂103的第一端部105和其第二端部106之间，优选的，滚轮107位于摇臂103的中部，驱动凸轮104的回转中心位于滚轮107的正上方，滚轮107与驱动凸轮104的轮缘相抵接。
其中在气门组件101上设有回弹结构，以通过摇臂103保持驱动凸轮104与滚轮107始终接触。
本实施例通过驱动凸轮104作用于摇臂103中部的滚轮107上，驱动摇臂103的第二端部106围绕其第一端部105进行摆动以带动气门组件101进行上下运动，调节凸轮102的回转能够带动摇臂103的第一端部105以圆弧轨迹进行摆动，在调整摇臂103位姿的同时改变滚轮107的高度，滚轮107下压的有效行程发生变化，在驱动凸轮104的作用下，进而得到不同的气门升程。
相应的，可以根据实际需求设计摇臂103的结构形式以适应不同的气门结构，例如图5中将摇臂103设置为具有固定连接的两段，其中两段之间可以根据需要设置满足要求的夹角大小，本实施例中其他零部件的相应形状和尺寸均可按照设计需求进行适应性调整，这里不再展开。
实施例2
本实施例提供了一种机械式连续可变气门升程控制装置，通过驱动围绕其自身一端部摆动的摇臂进行连续摆动以驱动气门组件进行上下运动，如图6、图7所示，其动作原理为：
将摇臂L2的左端固定铰接形成摆动支点；
提供与摇臂L2相铰接的调节摆臂L3，其中调节摆臂L3的左端与位于气门升程调节偏心轴R2上的偏心摆销O2相接触；
气门升程调节偏心轴R2围绕其回转中心进行转动时，可使偏心摆销O2的高度发生变化，进而改变调节摆臂L3和摇臂L2之间的夹角大小，即图6中的夹角α1大于图7中的夹角α2，偏心摆销O2的高度变化通过杠杆形式会传递形成调节摆臂L3的右端的高度位置变化；
调节摆臂L3的右端下压的有效行程发生改变，在驱动凸轮的回转驱动下(驱动凸轮提供竖直向下的作用力F3，使得气门组件获得竖直向下的作 用力F4)，实现气门升程的连续可变，即图6中气门实际升程h3大于图7中气门实际升程h4。
具体的，为了更好的显示上述变化过程，图8对比显示出气门升程调节偏心轴R2的相位由0°依次变化到45°、90°和180°的示意图，可以看出，气门的最大升程是不同的，也即可以实现气门升程的连续可变。
一种基于上述原理的连续可变气门升程控制装置的一种具体结构如图9所示，包括气门组件201、调节凸轮202、摇臂203、调节摆臂204和驱动凸轮205。
摇臂203具有第一端部206和第二端部207，其中摇臂203的第二端部207与气门组件201相连接，摇臂203的第一端部206铰接在调节凸轮202的回转轴上，摇臂203整体能够围绕其第一端部206进行摆动。
进一步的，驱动凸轮205位于摇臂203的上方一侧，气门组件201位于摇臂203的下方一侧，调节摆臂204通过一铰接点208(例如销接)连接在摇臂203上，其中该一铰接点208优选位于摇臂203的中央，调节摆臂204的第一端部210与调节凸轮202之间抵接而相互作用，在调节摆臂204的第二端部211设有滚子209，滚子209提供与驱动凸轮205相抵接而相互作用的一作用点。
再进一步的，驱动凸轮205的回转中心位于滚子209的正上方，滚子209与驱动凸轮205的轮缘相抵接，其中在气门组件201上设有回弹结构，以通过摇臂203保持驱动凸轮205与滚子209始终接触。
具体的，调节凸轮202的回转能够带动调节摆臂204的第二端部211上的滚子209以圆弧轨迹(围绕调节凸轮202的回转轴)进行摆动，在改变调节摆臂204与摇臂203之间的夹角的同时改变调节摆臂204的第二端部211高度，此过程中摇臂203的位姿不产生变化。
本实施例通过驱动凸轮205作用于调节摆臂204的第二端部211上的滚子209，驱动摇臂203的第二端部207围绕其第一端部206进行摆动以带动 气门组件201进行上下运动，调节凸轮202的回转能够带动调节摆臂204上的滚子209沿圆弧轨迹(以调节摆臂204和摇臂203的铰接点208为中心)进行摆动，在保持摇臂203位姿不变的同时，改变调节摆臂204上滚子209的高度，滚子209下压的有效行程发生变化，在驱动凸轮205的作用下，进而得到不同的气门升程。
本实施例中摇臂203的第一端部206铰接在调节凸轮202的回转轴上，调节摆臂204的第一端部210与调节凸轮202之间抵接而相互作用，在其他示例中，同理，也可以将调节摆臂204的第一端部210铰接在调节凸轮202的回转轴上，摇臂203的第一端部206与调节凸轮202之间抵接而相互作用。
相应的，可以根据实际需求设计调节摆臂204的结构形式以适应不同的气门结构，例如图5中在调节摆臂204上设置了两组滚子209，通过两组驱动凸轮205进行同步驱动；本实施例中其他零部件的相应形状和尺寸均可按照设计需求进行适应性调整，这里不再展开。
虽然本发明以较佳实施例揭露如上，但并非用以限定本发明实施的范围。任何本领域的普通技术人员，在不脱离本发明的发明范围内，当可作些许的改进，即凡是依照本发明所做的同等改进，应为本发明的范围所涵盖。

Claims (10)

  1. 一种连续可变气门升程控制装置，包括气门组件、调节凸轮、摇臂和驱动凸轮，所述摇臂能够围绕其位于所述调节凸轮处的第一端部进行摆动，所述摇臂的第二端部与所述气门组件相连接，所述驱动凸轮作用于所述摇臂上并驱动所述摇臂的第二端部围绕其第一端部进行摆动以带动所述气门组件进行上下运动。
  2. 如权利要求1所述的连续可变气门升程控制装置，其中，所述摇臂提供与所述驱动凸轮相抵接而相互作用的一作用点，所述调节凸轮的回转能够改变该一作用点的高度。
  3. 如权利要求2所述的连续可变气门升程控制装置，其中，该一作用点为设置于所述摇臂的第一端部和其第二端部之间的滚轮，所述滚轮与所述驱动凸轮的轮缘相抵接。
  4. 如权利要求3所述的连续可变气门升程控制装置，其中，所述摇臂的第一端部可转动地设置在所述调节凸轮上，所述调节凸轮的回转能够带动所述摇臂的第一端部以圆弧轨迹进行摆动，在调整所述摇臂位姿的同时改变所述滚轮的高度。
  5. 如权利要求3所述的连续可变气门升程控制装置，其中，所述滚轮位于所述摇臂的中央。
  6. 如权利要求2所述的连续可变气门升程控制装置，其中，进一步包括调节摆臂，所述调节摆臂通过一铰接点连接在所述摇臂上，所述调节凸轮的回转能够作用于所述调节摆臂的第一端部而使所述调节摆臂围绕该一铰接点转动，该一作用点为设置于所述调节摆臂的第二端部上的滚子。
  7. 如权利要求6所述的连续可变气门升程控制装置，其中，
    所述摇臂的第一端部铰接在所述调节凸轮的回转轴上，所述调节摆臂的第一端部与所述调节凸轮之间抵接而相互作用；或
    所述调节摆臂的第一端部铰接在所述调节凸轮的回转轴上，所述摇臂的第一端部与所述调节凸轮之间抵接而相互作用；
    所述调节凸轮的回转能够带动所述调节摆臂的第二端部上的所述滚子以圆弧轨迹进行摆动，在改变所述调节摆臂与所述摇臂之间的夹角的同时改变所述调节摆臂的第二端部的高度，此过程中所述摇臂的位姿不产生变化。
  8. 如权利要求6所述的连续可变气门升程控制装置，其中，该一铰接点位于所述摇臂的中央。
  9. 如权利要求2所述的连续可变气门升程控制装置，其中，所述驱动凸轮的回转中心位于该一作用点的正上方。
  10. 一种采用权利要求1－9任一项所述的连续可变气门升程控制装置的发动机。
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