An articulated rocker arm dynamic cylinder valve control mechanism and working method

Abstract

The present invention discloses an articulated rocker arm dynamic cylinder closing valve control mechanism and a working method, which solves the problem that the valve control mechanism in the prior art is easily damaged, and has the beneficial effects of reliable structure and strong stability. The specific scheme is as follows: An articulated rocker arm dynamic cylinder closing valve control mechanism comprises an active rocker arm and a slave rocker arm, one side of the slave rocker arm is connected to the valve, the slave rocker arm is rotatably connected to the active rocker arm, and the other side of the slave rocker arm is hingedly connected to one end of a joint component, the joint component comprises multiple joints, and two adjacent joints are movably connected, the other end of the joint component is movably connected to the active rocker arm, the connecting end of the active rocker arm and the joint component cooperates with the camshaft, and the active rocker arm is provided with a control component, and the action of the control component can cause the joint component to separate from the limiting surface of the active rocker arm, and the camshaft pushes the active rocker arm to move, thereby causing the joint component to bend and drive the slave rocker arm to rotate.

Description

Technical Field

[0001] The invention relates to the field of engine valve train, in particular to an articulated rocker arm dynamic cylinder closing valve control mechanism and a working method. Background Art

[0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] Compared with traditional engines, dynamic cylinder deactivation technology has obvious advantages in energy conservation and emission reduction. Existing dynamic cylinder deactivation mechanisms mostly adopt the technical route of hydraulically driven mechanical locking, that is, hydraulic oil pushes the sliding pin to switch between two states. The sliding pin has to withstand a large mechanical shear force under normal conditions. This structure is suitable for small-displacement engines with small valve driving force, but it is not suitable for large-displacement engines with large valve driving force and high reliability requirements. In addition, the sliding pin switching has strict requirements on the switching timing, and there may be a situation where the switching is not in place, causing serious mechanical damage.

[0004] The Chinese patent application publication number CN114087076A provides an engine cylinder deactivation valve control device and method, which uses a sliding valve as an actuator. However, the large sliding valve stroke restricts the response speed of the system, so it can only be used for static cylinder deactivation systems and cannot meet the requirements of fast response of dynamic cylinder deactivation systems. Summary of the invention

[0005] In view of the deficiencies in the prior art, an object of the present invention is to provide an articulated rocker arm dynamic cylinder valve control mechanism, which has a more reliable structure and is less prone to damage.

[0006] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0007] An articulated rocker arm dynamic cylinder closing valve control mechanism comprises an active rocker arm and a slave rocker arm, wherein the slave rocker arm is rotatably connected to the active rocker arm, one side of the slave rocker arm is connected to the valve, and the other side of the slave rocker arm is hingedly connected to one end of a joint component, wherein the joint component comprises a plurality of joint sections, and two adjacent joint sections are movably connected, and the other end of the joint component is movably connected to the active rocker arm, and the connecting end of the active rocker arm and the joint component cooperates with a camshaft, and the camshaft pushes the active rocker arm to move so that the joint component drives the slave rocker arm to rotate to realize opening or closing of the valve, and the active rocker arm is provided with a control component, and the action of the control component can make the joint component disengage from the limiting surface of the active rocker arm, and under the action of the camshaft, the joint component gradually bends but cannot push the slave rocker arm to move so that the valve enters the cylinder closing state, so that the switching between the valve working state and the cylinder closing state is realized by the bending and extension of the joint component.

[0008] In the articulated rocker arm dynamic cylinder closing valve control mechanism as described above, when the joint component is bent, the valve is in the cylinder closing state, and when the joint component is extended, the valve is in the working state. At this time, all the joints in the joint component are located in the same plane, and the joint component is inclined upward relative to the central axis of the connection between the active rocker arm and the joint component.

[0009] In the articulated rocker arm dynamic cylinder closing valve control mechanism as described above, the two adjacent joints are connected by a first pin shaft, a second pin shaft is arranged between the joint component and the follower rocker arm, the first pin shaft is equipped with a torsion spring, the torsion spring is sleeved on the first pin shaft, one side of the torsion spring is pressed on the second pin shaft, and the other side of the torsion spring is pressed on the joint to keep the joint component in an extended state when the valve is in a working state.

[0010] In an articulated rocker arm dynamic cylinder valve control mechanism as described above, the active rocker arm is provided with a roller, the roller cooperates with the camshaft, the roller pin passes through the active rocker arm, the roller and the joint component, the contact position between the active rocker arm and the joint component is located between the first pin shaft and the second pin shaft, and when the control component is actuated, the central axis of the first pin shaft can deviate from the line connecting the central axis of the second pin shaft and the central axis of the roller pin, so that the joint component can achieve effective bending, so that the joint component bends in the direction away from the limiting surface.

[0011] In an articulated rocker arm dynamic cylinder valve control mechanism as described above, a protrusion is provided on one side of the active rocker arm, and the control component is installed in the protrusion. The control component includes an oil chamber, and hydraulic oil can be injected into the oil chamber. A slider is provided in the oil chamber, and one end of the slider is provided through the protrusion. The end of the slider passing through the protrusion can contact the joint component, and the end side of the protrusion forms a part of the limiting surface. The control component is actuated to push the slider toward the joint component, so that the joint component is separated from the limiting surface of the active rocker arm.

[0012] An articulated rocker arm dynamic cylinder valve control mechanism as described above, wherein the active rocker arm comprises a gate-type body, a first opening is arranged on one side of the gate-type body, the active rocker arm cooperates with the slave rocker arm through the first opening, the protrusion is located on one side of the hollow part of the gate-type body, the roller is arranged in the hollow part of the other side of the gate-type body, the roller pin is arranged through the gate-type body, the diameter of the first opening is larger than the diameter of the roller pin, when the joint component is separated from the limiting surface, the camshaft pushes the roller, thereby pushing the roller pin and the active rocker arm to move, the joint component overcomes the force of the torsion spring to bend, but cannot overcome the valve spring force to push the slave rocker arm to move;

[0013] The active rocker arm door-type body extends at the end side of the protruding portion to form a plane, which is the limiting surface, and the limiting surface can fit with part of the joint component.

[0014] In the articulated rocker arm dynamic cylinder valve closing control mechanism as described above, the active rocker arm and the slave rocker arm are connected by a sliding bearing, the sliding bearing and the active rocker arm are clearance-fitted, and the sliding bearing and the slave rocker arm are interference-fitted, so that the active rocker arm can rotate relative to the slave rocker arm.

[0015] As described above, in the articulated rocker arm dynamic cylinder valve closing control mechanism, considering the rationality of the structural setting, the slave rocker arm is a fork-shaped structure, and the active rocker arm is located at the open part of the slave rocker arm.

[0016] In the articulated rocker arm dynamic cylinder closing valve control mechanism as described above, the slave rocker arm comprises a rocker arm body, one end of the rocker arm body is connected to the valve foot, a second opening is provided on the rocker arm body, and the rocker arm body cooperates with the active rocker arm through the second opening.

[0017] In a second aspect, the present invention further provides a working method of an articulated rocker arm dynamic cylinder valve control mechanism, including the following contents:

[0018] When the valve is in working state: the joint component is in an extended state, and the main part of the camshaft contacts one side of the active rocker arm during the rotation process, and the valve is in an open state at this time; during the rotation of the camshaft, the convex part of the camshaft gradually contacts one side of the active rocker arm, so that one side of the active rocker arm is gradually raised. Since the active rocker arm is connected to one side of the slave rocker arm through the joint component, the side of the slave rocker arm connected to the valve is gradually lowered to achieve the closing of the valve;

[0019] When the valve needs to enter the closed cylinder state: the control component drives the joint component to separate from the limit surface of the active rocker arm, and the camshaft pushes the active rocker arm to move, thereby bending the joint component. At this time, the valve is always in the closed cylinder state because the slave rocker arm cannot be driven to overcome the valve spring force;

[0020] When the control component is not working, the connection end of the active rocker arm and the joint component returns to the side that cooperates with the camshaft, the joint component is gradually in an extended state, and the valve enters a working state.

[0021] The beneficial effects of the present invention are as follows:

[0022] 1) The present invention is provided with a valve control mechanism, which as a whole includes an active rocker arm and a slave rocker arm, and the two can rotate relative to each other. A joint component is arranged between the active rocker arm and the slave rocker arm, and the joints of the joint component are movably connected to realize the bendable setting of the joint. Under the action of the camshaft, the active rocker arm drives the joint component to drive the slave rocker arm to rotate, so as to realize the opening or closing of the valve in the valve working state; the active rocker arm is provided with a control component, and the control component can make the joint component separate from the limiting surface of the active rocker arm, and under the action of the camshaft, the joint component is gradually bent, and at this time, the slave rocker arm cannot be driven to open the valve, so that the valve enters the closed cylinder state, so that the switching between the valve working state and the closed cylinder state (closing, stopping working) is realized by the control component, the structure is more reliable, the stability is stronger, it is not easy to be damaged, there is no need to set a sliding valve, and the feasibility is stronger.

[0023] 2) In the present invention, a torsion spring is installed at the first pin shaft in the joint component, and the torsion spring is sleeved on the first pin shaft. One side of the torsion spring is pressed on the second pin shaft, and the other side of the torsion spring is pressed on the joint. Under the setting of the torsion spring, the two adjacent joints can be kept in an extended state to ensure that the valve is in a working state. At this time, even if the camshaft can drive the active rocker arm to rotate, the active rocker arm cannot drive the driven rocker arm to rotate because the valve cannot move.

[0024] 3) In the present invention, an oil chamber is provided at the active rocker arm, a slider is provided in the oil chamber, hydraulic oil is injected into the oil chamber, and the movement of the slider relative to the protrusion is controlled by the hydraulic oil so that the joint component can be separated from the active rocker arm limit surface, thereby realizing the switching of the two working modes, the slider stroke is small, and the response speed is fast.

[0025] 4) The active rocker arm and the driven rocker arm in the present invention are reasonably structured. The active rocker arm is located in the hollow of the fork-shaped driven rocker arm. The two are connected by a sliding bearing so that the active rocker arm and the driven rocker arm can rotate relative to each other. The active rocker arm includes a door-type body. The door-type body is provided with a protrusion to set a control component. The door-type body is provided with a roller, and the roller can cooperate with the camshaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0027] Figure 1 It is a schematic diagram of an articulated rocker arm dynamic cylinder closing valve control mechanism controlling a valve in a working state according to one or more embodiments of the present invention.

[0028] Figure 2 It is a schematic diagram of an articulated rocker arm dynamic cylinder closing valve control mechanism controlling a valve to be in a cylinder closing state according to one or more embodiments of the present invention.

[0029] Figure 3 It is a schematic diagram of the connection between the first joint and the second joint in an articulated rocker arm dynamic cylinder valve control mechanism according to one or more embodiments of the present invention.

[0030] Figure 4 It is a front view of a slave rocker arm in an articulated rocker arm dynamic cylinder valve closing control mechanism according to one or more embodiments of the present invention.

[0031] Figure 5 It is a schematic diagram of a slave rocker arm in an articulated rocker arm dynamic cylinder valve control mechanism according to one or more embodiments of the present invention.

[0032] Figure 6 It is a cross-sectional view of an active rocker arm in an articulated rocker arm dynamic cylinder valve closing control mechanism according to one or more embodiments of the present invention.

[0033] Figure 7 It is a schematic diagram of an active rocker arm in an articulated rocker arm dynamic cylinder valve control mechanism according to one or more embodiments of the present invention.

[0034] Figure 8 It is a schematic diagram of the position of a joint component in an articulated rocker arm dynamic cylinder deactivation valve control mechanism when the valve is in a working state according to one or more embodiments of the present invention.

[0035] Fig. 9 It is a schematic diagram of the position of a joint component of an articulated rocker arm dynamic cylinder deactivation valve control mechanism when the valve is in a cylinder deactivation state according to one or more embodiments of the present invention.

[0036] In the figure: the distances or sizes between parts are exaggerated to show the positions of various parts, and the schematic diagram is for reference only.

[0037] Wherein: 1. valve, 2. valve foot, 3. driven rocker arm, 4. clearance adjustment screw, 5. nut, 6. active rocker arm, 7. first joint, 8. second joint, 9. roller, 10. camshaft, 11. torsion spring, 12. roller pin, 13. slider, 14. circlip, 15. second pin shaft, 16. first pin shaft, 17. sliding bearing, 18. rocker arm shaft;

[0038] 3-1. Rocker arm body, 3-2. First extension portion, 3-3. Second extension portion, 3-4. Fourth opening, 3-5. Second opening;

[0039] 6-1. Door-shaped body, 6-2. Protrusion, 6-3. First opening;

[0040] 7-1. Beam. DETAILED DESCRIPTION

[0041] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0042] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless otherwise explicitly stated in the present invention, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "include" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof;

[0043] As introduced in the background technology, the dynamic valve control mechanism in the prior art has the problem of being easily damaged. In order to solve the above technical problem, the present invention proposes an articulated rocker arm dynamic cylinder deactivation valve control mechanism.

[0044] Embodiment 1

[0045] In a typical embodiment of the present invention, reference is made to Figure 1 and Figure 2 As shown, an articulated rocker arm dynamic cylinder closing valve control mechanism includes an active rocker arm 6 and a slave rocker arm 3, one side of the slave rocker arm 3 is connected to the valve 1, the slave rocker arm 3 is slidably connected to the active rocker arm 6 so that the two can rotate relative to each other, and the other side of the slave rocker arm 3 is hingedly connected to one end of a joint component, the joint component includes multiple joints, and two adjacent joints are movably connected, and the other end of the joint component is movably connected to the active rocker arm 6, the active rocker arm 6 cooperates with the camshaft 10, the camshaft 10 pushes the active rocker arm 6 to move so that the joint component drives the slave rocker arm 3 to rotate to realize the opening or closing of the valve 1, the active rocker arm 6 is provided with a control component, the control component can drive the joint component to disengage from the limiting surface of the active rocker arm 6, the camshaft 10 pushes the active rocker arm 6 to move so that the joint component gradually bends but cannot push the slave rocker arm to move, and the switching between the valve working state and the cylinder closing state is realized by the bending and extension of the joint component.

[0046] It is easy to understand that when the joint component is bent, the valve 1 is in a closed cylinder state, and when the joint component is extended, the valve 1 is in a working state. At this time, all the joints in the joint component are located in the same plane, or the angles between two adjacent joints are close to 180°.

[0047] refer to Figure 3 , Figure 8As shown, in this embodiment, the joint component includes two sections, namely the first joint 7 and the second joint 8. The first joint 7 is H-shaped. A crossbeam 7-1 is arranged in the middle of the first joint 7. The output end of the control component is in contact with the crossbeam 7-1. The first joint 7 and the second joint 8 are connected by a first pin shaft 16. A second pin shaft 15 is arranged between the upper side of the first joint 7 and the driven rocker arm 3. The second pin shaft 15 passes through the driven rocker arm 3 and the first joint 7. The first pin shaft 16 is equipped with a torsion spring 11. One side of the torsion spring 11 is pressed against the second pin shaft 15, and the other side of the torsion spring 11 is pressed against the second joint 8. Under the action of the torsion spring 11, the first joint 7 and the second joint 8 remain in an extended state, so that when the valve 1 is in a working state, the joint component remains in an extended state.

[0048] It is easy to understand that the second joint 8 includes two side plates, the upper sides of which are connected to the first joint 7 , and the lower sides of which are connected to the roller pin 12 .

[0049] Considering the rationality of the structural setting, refer to Figure 4 and Figure 5 As shown, the slave rocker arm 3 is a fork-shaped structure, the height of the middle part of the slave rocker arm 3 is greater than the height of the two sides, and the active rocker arm 6 is located at the open part of the slave rocker arm 3.

[0050] Specifically, the slave rocker arm 3 includes a rocker arm body 3-1, one end of the rocker arm body 3-1 is connected to the valve foot 2, the rocker arm body 3-1 is provided with a second opening 3-5, the second opening 3-5 is a round hole, the rocker arm body 3-1 cooperates with the active rocker arm 6 through the second opening 3-5, a first extension part 3-2 is provided on one side of the upper side of the rocker arm body 3-1, a third opening is provided at the first extension part 3-2, the third opening is connected to the valve foot 2, specifically connected by a clearance adjustment screw 4, and locked by a nut 5, a second extension part 3-3 is provided on the other side of the upper side of the rocker arm body 3-1, the angle between the second extension part 3-3 and the first extension part 3-2 is greater than 120° and less than 180°, a fourth opening 3-4 is provided at the second extension part 3-3, the center axis of the fourth opening 3-4 and the center axis of the second opening 3-5 are set at a distance, and the connection between the slave rocker arm 3 and the first joint 7 is realized through the fourth opening 3-4.

[0051] refer to Figure 6 and Figure 7 As shown, the active rocker arm 6 is provided with a roller 9, and the roller 9 cooperates with the camshaft 10. The roller pin 12 is provided through the active rocker arm 6, the roller 9 and the second joint 8. The contact position of the active rocker arm 6 and the joint component is located between the first pin shaft 16 and the second pin shaft 15, which can make the central axis of the first pin shaft 16 deviate from the line connecting the central axis of the second pin shaft 15 and the central axis of the roller pin 12, so that the joint component can achieve effective bending, so that the joint component bends in the direction away from the limiting surface.

[0052] In this embodiment, a protrusion 6-2 is provided on one side of the active rocker arm 6, and a control component is installed in the protrusion 6-2. The control component specifically includes an oil chamber, which is provided inside the protrusion 6-2. Hydraulic oil can be injected into the oil chamber, and the hydraulic oil with a set pressure is controlled by a solenoid valve to flow into the oil chamber. A slider 13 is provided in the oil chamber, and one end of the slider 13 is provided through the protrusion 6-2. The end of the slider 13 passing through the protrusion 6-2 can contact the joint component. An elastic retaining ring 14 is provided on the side of the oil chamber close to the joint component, and the displacement of the slider 13 is limited by the elastic retaining ring 14. A reduced diameter section is provided at one end of the slider 13 close to the joint component, and an end of the reduced diameter section away from the slider 13 is provided as an arc surface, and the arc surface of the reduced diameter section can contact the cross beam 7-1 of the first joint. The end side of the protrusion 6-2 forms a part of the limiting surface. The control component is actuated to push the slider toward the joint component, so that the joint component is separated from the limiting surface of the active rocker arm.

[0053] Specifically, the active rocker arm includes a door-type body 6-1, a first opening 6-3 is arranged on one side of the door-type body 6-1, the first opening 6-3 is a circular hole, the active rocker arm cooperates with the driven rocker arm through the first opening 6-3, the first opening and the second opening of the driven rocker arm are used for the installation of the sliding bearing 17, the rocker shaft 18 is arranged through the center of the sliding bearing 17, the protrusion 6-2 is located on one side of the hollow part of the door-type body 6-1, and a fifth opening is arranged on the other side of the door-type body 6-1, and the protrusion 6-2 is located at the upper right corner of the fifth opening. The slider 13 can be cylindrical, with the fifth opening as the center, the central axis of the slider 13 is at an acute angle to the horizontal line, the central axis of the fifth opening is set at a distance from the central axis of the first opening 6-3, and the door-type body 6-1 is at the fifth A roller 9 is arranged on the inner side of the opening, i.e., the hollow part of the gate-type body 6-1. A step is arranged on the gate-type body 6-1 to accommodate the roller 9. A roller pin 12 passes through the fifth opening of the gate-type body 6-1 and the roller 9. The diameter of the roller pin 12 is adapted to the inner diameter of the fifth opening. The diameter of the first opening 6-3 is larger than the diameter of the roller pin 12. The gate-type body 6-1 smoothly transitions between the first opening 6-3 and the fifth opening. In this way, when the joint component of the gate-type body 6-1 detaches from the limiting surface, the camshaft 10 pushes the roller 9, and then pushes the roller pin 12 and the active rocker arm 6 to move. The joint component overcomes the force of the torsion spring 11 and bends, but cannot overcome the valve spring force, so that the valve cannot be opened, so that the valve 1 is always in a closed state, that is, the valve is in a closed cylinder state at this time.

[0054] It should be noted that the door-type body 6-1 in the active rocker arm extends at the end side of the protruding part to form a plane, which is the limiting surface. The limiting surface is arranged to intersect with the central axis of the slider 13. The limiting surface can fit with the first joint 7. The rocker arm body 3-1 in the slave rocker arm is also provided with a plane to avoid interference with the movement of the joint component.

[0055] In addition, the sliding bearing 17 is clearance-fitted with the active rocker arm 6 , and the sliding bearing 17 is interference-fitted with the passive rocker arm 3 , so that the active rocker arm 6 can rotate relative to the passive rocker arm 3 .

[0056] The valve control mechanism provided in the present embodiment comprises an active rocker arm 6 and a slave rocker arm 3 as a whole, and the two can rotate relative to each other. A joint component is arranged between the active rocker arm 6 and the slave rocker arm 3, and the joints of the joint component are movably connected to realize the bendable setting of the joint. A control component is arranged on the active rocker arm 6, and the control component drives the joint component to separate from the limiting surface of the active rocker arm. Under the action of the camshaft 10, the joint component is gradually bent. At this time, the slave rocker arm cannot be driven to open the valve 1, so that the valve enters the closed cylinder state. In this way, the switching between the valve working state and the closed cylinder state is realized by the control component, and the structure is more reliable, more stable, not easy to be damaged, no sliding valve is required, and the feasibility is stronger. The overall structure is reasonably arranged. When there is no control oil pressure, the slider 13 cannot push the joint component to bend. When there is control oil pressure, under the action of the oil pressure, the slider 13 will push the joint component to bend, and can quickly switch between the normal working state and the closed cylinder working state to achieve rapid response.

[0057] Embodiment 2

[0058] This embodiment discloses a working method of an articulated rocker arm dynamic cylinder valve control mechanism, including the following contents:

[0059] refer to Figure 7 As shown, when the valve is in working state: the joint component is in an extended state, and the main part of the camshaft 10 contacts one side of the active rocker arm 6 during the rotation process, and the valve is in an open state at this time; during the rotation of the camshaft, the convex part of the camshaft 10 gradually contacts one side of the active rocker arm 6, so that one side of the active rocker arm 6 is gradually raised, and because the active rocker arm is connected to one side of the slave rocker arm 3 through the joint component, the side of the slave rocker arm connected to the valve is gradually lowered to achieve the closing of the valve;

[0060] When the valve needs to enter the closed cylinder state: the solenoid valve opens, and the hydraulic oil is injected into the oil chamber. Figure 8 As shown, the slider moves to drive the joint component to separate from the limiting surface of the active rocker arm 6, and the camshaft 10 pushes the roller 9, thereby pushing the roller pin 12 and the active rocker arm 6 to move. The joint component will overcome the force of the torsion spring 11 and bend, and cannot overcome the valve spring force so that the valve is always in a closed state;

[0061] When the solenoid valve is disconnected, the side where the active rocker arm 6 cooperates with the camshaft 10 returns to its original position, the joint component is gradually in an extended state, and the valve 1 enters a working state.

[0062] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An articulated rocker arm dynamic cylinder valve control mechanism, characterized in that: The invention comprises an active rocker arm and a slave rocker arm, wherein the slave rocker arm is rotatably connected to the active rocker arm, one side of the slave rocker arm is connected to the valve, and the other side of the slave rocker arm is hingedly connected to one end of a joint component, wherein the joint component comprises a plurality of joint sections, and two adjacent joint sections are movably connected, and the other end of the joint component is movably connected to the active rocker arm, and the connecting end of the active rocker arm and the joint component cooperates with a camshaft, and the camshaft drives the active rocker arm to move so that the joint component drives the slave rocker arm to rotate to realize opening or closing of the valve, and the active rocker arm is provided with a control component, and the action of the control component can make the joint component separate from the limiting surface of the active rocker arm, and under the action of the camshaft, the joint component gradually bends but cannot drive the slave rocker arm to move so that the valve enters a closed cylinder state, so that the switching between the valve working state and the closed cylinder state is realized by the bending and extension of the joint component; When the joint member is bent, the valve is in a closed cylinder state, and when the joint member is extended, the valve is in a working state; The joint component includes a first joint and a second joint. The first joint is H-shaped. A crossbeam is arranged in the middle of the first joint. The output end of the control component contacts the crossbeam. The first joint and the second joint are connected by a first pin shaft. A second pin shaft is arranged between the upper side of the first joint and the driven rocker arm. The second pin shaft passes through the driven rocker arm and the first joint. The first pin shaft is equipped with a torsion spring, which is sleeved on the first pin shaft. One side of the torsion spring is pressed on the second pin shaft, and the other side of the torsion spring is pressed on the second joint to keep the joint component in an extended state when the valve is in a working state.

2. The articulated rocker arm dynamic cylinder valve control mechanism according to claim 1, characterized in that: The active rocker arm is provided with a roller, the roller cooperates with the camshaft, the roller pin passes through the active rocker arm, the roller and the joint component, the contact position between the active rocker arm and the joint component is located between the first pin shaft and the second pin shaft, and when the control component is actuated, the center axis of the first pin shaft can deviate from the line connecting the center axis of the second pin shaft and the center axis of the roller pin.

3. The articulated rocker arm dynamic cylinder valve control mechanism according to claim 2, characterized in that: A protrusion is arranged on one side of the active rocker arm, and the control component is installed in the protrusion. The control component includes an oil chamber, and hydraulic oil can be injected into the oil chamber. A slider is arranged in the oil chamber, and one end of the slider passes through the protrusion. The end of the slider passing through the protrusion can contact the joint component, and the end side of the protrusion forms a part of the limiting surface.

4. The articulated rocker arm dynamic cylinder valve control mechanism according to claim 3, characterized in that: The active rocker arm comprises a door-shaped body, a first opening is arranged on one side of the door-shaped body, the active rocker arm cooperates with the driven rocker arm through the first opening, the protrusion is located on one side of the hollow part of the door-shaped body, the roller is arranged in the hollow part on the other side of the door-shaped body, the roller pin passes through the door-shaped body, and the diameter of the first opening is greater than the diameter of the roller pin; The active rocker arm door-type body extends at the end side of the protruding portion to form a plane, which is the limiting surface, and the limiting surface can fit with part of the joint component.

5. The articulated rocker arm dynamic cylinder valve control mechanism according to claim 1, characterized in that: The active rocker arm and the slave rocker arm are connected via a sliding bearing, the sliding bearing is clearance-fitted with the active rocker arm, and the sliding bearing is interference-fitted with the slave rocker arm.

6. The articulated rocker arm dynamic cylinder valve control mechanism according to claim 1, characterized in that: The slave rocker arm is a fork-shaped structure, and the active rocker arm is located at the open portion of the slave rocker arm.

7. The articulated rocker arm dynamic cylinder valve control mechanism according to claim 1, characterized in that: The slave rocker arm comprises a rocker arm body, one end of which is connected to the valve foot, and the rocker arm body is provided with a second opening, and the rocker arm body cooperates with the active rocker arm through the second opening.

8. A working method of an articulated rocker arm dynamic cylinder valve control mechanism according to any one of claims 1 to 7, characterized in that: It includes the following: When the valve is in working state: the joint component is in an extended state, and the main part of the camshaft contacts one side of the active rocker arm during the rotation process, and the valve is in an open state at this time; during the rotation of the camshaft, the convex part of the camshaft gradually contacts one side of the active rocker arm, so that one side of the active rocker arm is gradually raised. Since the active rocker arm is connected to one side of the slave rocker arm through the joint component, the side of the slave rocker arm connected to the valve is gradually lowered to achieve the closing of the valve; When the valve needs to enter the closed cylinder state: the control component drives the joint component to separate from the limit surface of the active rocker arm, and the camshaft pushes the active rocker arm to move, thereby bending the joint component. At this time, the valve is always in the closed cylinder state because the slave rocker arm cannot be driven to overcome the valve spring force; When the control component is not working, the connection end of the active rocker arm and the joint component returns to the side that cooperates with the camshaft, the joint component is gradually in an extended state, and the valve enters a working state.

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