A variable inertia dual-mass flywheel for automobile based on electromagnetic induction

Abstract

The invention discloses a variable inertia dual-mass flywheel for automobile based on electromagnetic induction, comprising a basic structure, a current sensing device and an inertia regulating device, wherein the basic structure is located on the right side of the dual-mass flywheel, the current sensing device is located in the middle of the dual-mass flywheel, the inertia regulating device is located on the left side of the dual-mass flywheel, a connecting plate is arranged between the current sensing device and the inertia regulating device, and the movable permanent magnet is controlled to change its position in the dual-mass flywheel under the combined action of electromagnetic force, inertia, spring force and friction, so as to achieve the purpose of changing the rotational inertia and improving the vibration reduction performance of the dual-mass flywheel, and the electromagnetic induction principle is adopted to generate an excitation current of a coil, the excitation current is generated by rotating a copper disk, and two control switches are arranged to control the on-off of the current, so that the direction of the electromagnetic force can be changed, thereby controlling the direction of the inertia change of the dual-mass flywheel.

Description

Technical Field

[0001] The invention relates to the technical field of automobile flywheel vibration reduction, in particular to an automobile variable inertia dual-mass flywheel based on electromagnetic induction. Background Art

[0002] In order to reduce the torsional vibration of the transmission system caused by the imbalance of engine rotation, a dual-mass flywheel torsional vibration damper has emerged. This damper has developed rapidly and has been widely used due to its advantages such as large rotation angle and low torsional stiffness. With the continuous development of scientific research, the vibration reduction characteristics of dual-mass flywheels have also tended to be perfect, but at this stage, the research on dual-mass flywheels mainly focuses on nonlinear stiffness and damping, while the research on another important factor affecting the vibration reduction performance of dual-mass flywheels - rotational inertia - is relatively small.

[0003] When faced with different road conditions, the engine will enter different operating conditions. For a dual-mass flywheel, too large or too small moment of inertia will affect its vibration reduction performance. However, the moment of inertia of a general dual-mass flywheel is a fixed value and cannot adapt to different engine operating conditions, which significantly reduces the vibration reduction performance of the dual-mass flywheel. Summary of the invention

[0004] The purpose of the present invention is to provide an automobile variable inertia dual-mass flywheel based on electromagnetic induction to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: an automobile variable inertia dual-mass flywheel based on electromagnetic induction, the overall structure of which is divided into three parts: left, middle and right. The right side is the basic structure of the dual-mass flywheel, the middle part is provided with a current sensing device, the left side is provided with an inertia adjustment device, the control switch can control the induced current generated by the current sensing device, and the connecting plate is used to connect the current sensing device and the inertia adjustment device;

[0006] The basic structure comprises a primary flywheel, a starter gear ring spot-welded on the circumference of the primary flywheel, an arc spring placed in a groove on the right side of the primary flywheel, a flange placed in the primary flywheel and compressing the arc spring, and a secondary flywheel connected to the flange by screws;

[0007] The center of the primary flywheel and the flange is provided with an axial hole which can be connected to the rotating shaft. Eight threaded holes are evenly arranged around the axial hole of the flange. The protrusion of the flange is placed in the gap between the two arc springs. The center of the secondary flywheel is connected to the bearing, and eight threaded holes are evenly arranged around it. The flange and the secondary flywheel are fixed by eight screws.

[0008] The left side of the primary flywheel is provided with an extended annular cavity, the center of the circumference of the annular cavity is provided with two switch holes, the top is provided with four threaded holes, and the annular cavity is provided with a current sensing device;

[0009] The current sensing device comprises a magnetic isolation cavity fixed in the primary flywheel annular cavity by screws, a first fixed permanent magnet passing through the rotating shaft and located in the magnetic isolation cavity, a copper plate with four terminals symmetrically distributed on the surface, a plurality of washers sleeved on the shaft shoulder of the rotating shaft, a separate fixing ring for fixing the first fixed permanent magnet, and a magnetic isolation gland with four threaded holes arranged on the side;

[0010] The inertia adjustment device comprises an outer support ring supporting the entire changing device, a second fixed permanent magnet generating electromagnetic force, a mobile mass component fixed to the outer support ring by screws, a magnetic isolation sleeve fixed to the mobile mass component, and a support cover fixed to the outer support ring by screws.

[0011] Four threaded holes are arranged at the bottom and the top of the circumference of the magnetic isolation cavity, respectively. The washer and the separate fixing ring can adjust and fix the positions of the first fixed permanent magnet and the copper disk. The positions of the first fixed permanent magnet and the copper disk are different, and the magnetic field strength cut by the electromagnetic induction is different, generating induced currents of different sizes. The copper disk is fixed by the thread combination of the rotating shaft. The first fixed permanent magnet and the copper disk are both placed in the magnetic isolation cavity, and the magnetic isolation gland and the magnetic isolation cavity are assembled together by screws.

[0012] An axial hole is dug in the center of the outer supporting ring, four threaded holes are evenly distributed around the axial hole, and four magnet fixing seats are arranged on the side along the circumferential direction. The second fixed permanent magnet is wound with an upper and lower coil. The currents introduced by the upper and lower coils are in different directions, and electromagnetic forces in opposite directions are generated. The second fixed permanent magnet is fixed to the magnet fixing seat of the outer supporting ring by screws and is inserted into the magnetic isolation sleeve. The mobile mass component is a multi-component structure;

[0013] The mobile mass assembly includes a central support frame fixed on the outer support ring, a spring sleeved on the guide column of the central support frame and welded to the side of the central support frame, and a movable permanent magnet welded to the other end of the spring and sleeved on the guide column of the central support frame;

[0014] The central support frame is a support frame composed of a square support body and a guide column. The square support body has a square blind hole in the center, a circular through hole on the bottom, and four threaded holes evenly distributed around the circular through hole. The guide column is welded to the four sides of the square support body. The central support frame is fixed at the center of the bottom of the outer support ring by screws. The sides of the central support frame are arranged with threaded holes, and the magnetic isolation sleeve is fixed to the central support frame by screws.

[0015] Preferably, the rotating shaft is a detachable shaft assembled together by twisting a thread, and the left-side threaded shaft is connected to the right-side screw hole shaft with a shoulder, which is convenient for assembly and disassembly.

[0016] Preferably, two through holes are distributed on the surface of the magnetic isolation cover, and the wires connected to the copper disk terminal can pass through the through holes.

[0017] Preferably, the assembly of the magnetic isolation cover and the magnetic isolation cavity can isolate the magnetic field, so that the induced current is only generated in the current sensing device.

[0018] Preferably, the magnetic isolation sleeve has a magnetic shielding effect, preventing the electromagnetic field from leaking out, making the effect of the electromagnetic field on the movable permanent magnet more obvious.

[0019] Preferably, the control switch is glued to the switch hole in the center of the circular cavity on the left side of the primary flywheel. There are two control switches arranged at 180 degrees, which can control the on and off of the induced current.

[0020] Preferably, the connecting plate is fixed to the annular cavity extending on the left side of the primary flywheel by screws, and an inertia adjustment device is fixed to the other side of the connecting plate by screws.

[0021] Preferably, the connecting plate and the outer supporting ring of the inertia adjusting device are both provided with two through holes, so as to facilitate connecting the current sensing device and the inertia adjusting device with a wire.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. An electromagnetic induction variable inertia structure is introduced into the dual-mass flywheel. The position change of the movable permanent magnet in the dual-mass flywheel is controlled by the combined action of electromagnetic force, inertia, spring force and friction, thereby achieving the purpose of changing the rotational inertia and improving the vibration reduction performance of the dual-mass flywheel.

[0024] 2. The principle of electromagnetic induction is adopted to generate the excitation current of the coil. The excitation current is generated by the rotation of the copper disk, and two control switches are set to control the on and off of the current, so that it can change the direction of the electromagnetic force, thereby controlling the direction of the change of the inertia of the dual-mass flywheel. The rotational inertia of the flywheel automatically changes with the rotation speed of the copper disk, so that the rotational inertia of the dual-mass flywheel can be flexibly adjusted.

[0025] 3. For the magnetic field acting on the copper disk, the change of magnetic field strength can be achieved by adjusting the distance from the first fixed permanent magnet to the copper disk. Different magnetic field strengths will produce induced currents of different sizes. At this time, the electromagnetic force exerted on the movable permanent magnet will change, thereby controlling the intensity of the change in inertia of the dual-mass flywheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is an overall exploded view of the present invention;

[0027] Figure 2 It is the overall assembly diagram of the present invention;

[0028] Figure 3 is an assembly diagram of the current sensing device of the present invention;

[0029] Figure 4 is an exploded view of the current sensing device of the present invention;

[0030] Figure 5 It is a schematic diagram of the splitting of the rotating shaft of the present invention;

[0031] Figure 6 is an assembly diagram of the inertia adjustment device of the present invention;

[0032] Figure 7 is an exploded view of the inertia adjustment device of the present invention;

[0033] Figure 8 is an assembly diagram of the mobile mass assembly of the present invention;

[0034] Fig. 9 is an exploded view of the mobile mass assembly of the present invention;

[0035] Fig.10 It is a two-dimensional diagram of the internal wire connection of the present invention.

[0036] In the accompanying drawings: 1. secondary flywheel; 2. flange; 3. arc spring; 4. primary flywheel; 5. starting gear ring; 6. control switch; 7. current sensing device; 8. connecting plate; 9. inertia adjustment device; 10. rotating shaft; 71. magnetic isolation cavity; 72. first fixed permanent magnet; 73. copper disk; 74. gasket; 75. separate fixing ring; 76. magnetic isolation pressure cover; 91. outer supporting ring; 92. second fixed permanent magnet; 93. moving mass assembly; 94. magnetic isolation sleeve; 95. supporting cover; 931. movable permanent magnet; 932. spring; 933. center supporting frame. DETAILED DESCRIPTION

[0037] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. The same parts are represented by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the accompanying drawings, and the words "bottom" and "top", "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0038] Example: See Figure 1-Figure 2The present invention provides a technical solution: a variable inertia dual-mass flywheel for automobile based on electromagnetic induction, the overall structure of which is divided into three parts: left, middle and right. The right side is the basic structure of the dual-mass flywheel, the middle part is provided with a current sensing device 7, the left side is provided with an inertia regulating device 9, the control switch 6 can control the induced current generated by the current sensing device 7, and the connecting plate 8 is used to connect the current sensing device 7 and the inertia regulating device 9;

[0039] The basic structure includes a primary flywheel 4, a starter gear ring 5 spot-welded on the circumference of the primary flywheel 4, an arc spring 3 placed in a groove on the right side of the primary flywheel 4, a flange 2 placed in the primary flywheel 4 and compressing the arc spring 3, and a secondary flywheel 1 connected to the flange 2 by screws;

[0040] The primary flywheel 4 and the flange 2 are each provided with an axial hole at the center, which can be connected to the rotating shaft 10. Eight threaded holes are evenly arranged around the axial hole of the flange 2. The protrusion of the flange 2 is placed in the gap between the two arc springs 3. The center of the secondary flywheel 1 is connected to the bearing, and eight threaded holes are evenly arranged around it. The flange 2 and the secondary flywheel 1 are fixed by eight screws.

[0041] The rotating shaft 10 is a detachable shaft assembled by twisting the threads, the left threaded shaft is connected to the right screw hole shaft with a shoulder, and the assembly and disassembly is convenient;

[0042] The left side of the primary flywheel 4 is provided with an extended annular cavity, two switch holes are arranged at the center of the circumference of the annular cavity, four threaded holes are arranged at the top, and a current sensing device 7 is built into the annular cavity;

[0043] The control switch 6 is glued to the switch hole in the center of the circular cavity on the left side of the primary flywheel 4. There are two control switches 6, which are arranged at 180 degrees and can control the on and off of the induced current.

[0044] The connecting plate 8 is fixed to the annular cavity extending on the left side of the primary flywheel 4 by screws, and an inertia adjusting device 9 is fixed to the other side of the connecting plate 8 by screws;

[0045] The connecting plate 8 and the outer supporting ring 91 of the inertia adjusting device 9 are both provided with two through holes, so as to facilitate connecting the current sensing device 7 and the inertia adjusting device 9 with a wire.

[0046] like Figure 3-Figure 5As shown, the current sensing device 7 includes a magnetic isolation cavity 71 fixed in the annular cavity of the primary flywheel 4 by screws, a first fixed permanent magnet 72 passing through the rotating shaft 10 and located in the magnetic isolation cavity 71, a copper plate 73 with four terminals symmetrically distributed on the surface, a plurality of washers 74 sleeved on the shaft shoulder of the rotating shaft 10, a separate fixing ring 75 for fixing the first fixed permanent magnet 72, and a magnetic isolation gland 76 with four threaded holes arranged on the side. The bottom and the top of the circumference of the magnetic isolation cavity 71 are respectively arranged with four threaded holes. The washers 74 and the separate fixing ring 75 can adjust and fix the positions of the first fixed permanent magnet 72 and the copper plate 73.

[0047] The rotating shaft 10 is a detachable shaft assembled by twisting the threads, the left threaded shaft is connected to the right screw hole shaft with a shoulder, and the assembly and disassembly is convenient;

[0048] The copper disk 73 is fixed by a thread combination of the rotating shaft 10, the first fixed permanent magnet 72 and the copper disk 73 are both placed in the magnetic isolation cavity 71, and the magnetic isolation gland 76 is assembled with the magnetic isolation cavity 71 by screws;

[0049] The induced current of the current sensing device 7 is generated by the copper plate 73 cutting the magnetic flux lines of the first fixed permanent magnet 72. The magnitude of the induced current is closely related to the magnetic field strength of the first fixed permanent magnet 72. The washer 74 and the separate fixing ring 75 can adjust and fix the positions of the first fixed permanent magnet 72 and the copper plate 73. Several washers 74 can be applied to change the magnetic field strength, thereby changing the magnitude of the induced current. The magnetic isolation gland 76 and the magnetic isolation cavity 71 are assembled together by screws to isolate the magnetic field, so that the induced current is only generated in the current sensing device 7.

[0050] There are two through holes distributed on the surface of the magnetic isolation cover 76 , and the wires connected to the terminals of the copper plate 73 can pass through the through holes to lead out the induced current generated by the current sensing device 7 .

[0051] Figure 6-Figure 7 As shown, the inertia adjustment device 9 includes an outer support ring 91 supporting the entire changing device, a second fixed permanent magnet 92 generating electromagnetic force, a mobile mass component 93 fixed to the outer support ring 91 by screws, a magnetic isolation sleeve 94 sleeved and fixed to the mobile mass component 93, and a support cover 95 fixed to the outer support ring 91 by screws;

[0052] An axial hole is dug in the center of the outer supporting ring 91, and four threaded holes are evenly distributed around the axial hole. Four magnet fixing seats are provided on the side along the circumferential direction. The second fixed permanent magnet 92 is wound with upper and lower coils. The second fixed permanent magnet 92 is fixed to the magnet fixing seat of the outer supporting ring 91 by screws and inserted into the magnetic isolation sleeve 94. The movable mass component 93 is a multi-component structure.

[0053] like Figure 8-Figure 9As shown, the mobile mass assembly 93 includes a central support frame 933 fixed on the outer support ring 91, a spring 932 sleeved on the guide column of the central support frame 933 and welded to the side of the central support frame 933, and a movable permanent magnet 931 welded to the other end of the spring 932 and sleeved on the guide column of the central support frame 933;

[0054] The center support frame 933 is a support frame composed of a square support body and guide columns. A square blind hole is dug in the center of the square support body, a circular through hole is dug in the bottom surface, and four threaded holes are evenly distributed around the circular through hole. The guide columns are welded to the four sides of the square support body. The center support frame 933 is fixed to the center of the bottom of the outer support ring 91 by screws. Threaded holes are arranged on the sides of the center support frame 933, and the magnetic isolation sleeve 94 is fixed to the center support frame 933 by screws.

[0055] like Fig.10 As shown, the current generated by the copper disk 73 is connected to two control switches 6 via wires, and then introduced into the second fixed permanent magnet 92. The second fixed permanent magnet 92 is wound with an upper and lower coil. The currents introduced by the upper and lower coils have different directions, generating electromagnetic fields in opposite directions. The control switch 6 can control the on and off of the current, thereby controlling the direction of the electromagnetic field.

[0056] like Figure 4 , Figure 7 , Fig. 9 and Fig.10As shown, the working principle of a variable inertia dual-mass flywheel for automobiles based on electromagnetic induction is as follows: the copper disk 73 in the current sensing device 7 cuts the magnetic field of the first fixed permanent magnet 72 to generate an induced current, and the induced current is connected to two control switches 6 via a wire. The magnetic isolation cover 76 and the magnetic isolation cavity 71 are assembled together by screws, which can isolate the magnetic field so that the induced current is only generated in the current sensing device 7, and then the induced current is introduced into the second fixed permanent magnet 92 of the inertia adjustment device 9. The second fixed permanent magnet 92 is wound with an upper and lower coil. The current introduced by the upper and lower coils has different directions, and generates electromagnetic fields in opposite directions. The second fixed permanent magnet 92 is inserted into the magnetic isolation sleeve 94. The magnetic isolation sleeve 94 has a magnetic shielding effect, which prevents the electromagnetic field from leaking out, so that the effect of the electromagnetic field on the movable permanent magnet 931 is more obvious. The control switch 6 can control The direction of the electromagnetic field is controlled by turning on and off the induced current. The movable mass component 93 is built into the inertia adjustment device 9. The movable permanent magnet 931 of the movable mass component 93 moves under the combined action of the elastic force of the spring 932, the centrifugal force and the electromagnetic force generated by the second fixed permanent magnet 92. When the first control switch 6 is turned on and the second control switch 6 is turned off, the second fixed permanent magnet 92 generates an electromagnetic force on the movable permanent magnet 931, and the movable permanent magnet 931 mounted on the guide column of the center support frame 933 will move close to the rotation center, and the rotational inertia of the dual-mass flywheel will decrease. On the contrary, when the first control switch 6 is turned off and the second control switch 6 is turned on, the second fixed permanent magnet 92 generates a reverse electromagnetic force on the movable permanent magnet 931, and the movable permanent magnet 931 mounted on the guide column of the center support frame 933 will move away from the rotation center, and the rotational inertia of the dual-mass flywheel will increase.

[0057] like Figure 4 As shown in the figure, the steps to control the intensity of the change in the moment of inertia of the dual-mass flywheel of the car are:

[0058] The copper disk 73 in the current sensing device 7 cuts the magnetic field of the first fixed permanent magnet 72 to generate an induced current. The magnitude of the induced current is closely related to the magnetic field strength of the first fixed permanent magnet 72. The washer 74 and the separate fixing ring 75 can adjust and fix the positions of the first fixed permanent magnet 72 and the copper disk 73. When it is necessary to weaken the intensity of the change in the moment of inertia of the dual-mass flywheel, the number of washers 74 can be increased to move the copper disk 73 away from the first fixed permanent magnet 72, and the electromagnetic induction intensity is weakened; when it is necessary to strengthen the intensity of the change in the moment of inertia of the dual-mass flywheel, the number of washers 74 can be reduced to move the copper disk 73 close to the first fixed permanent magnet 72, and the electromagnetic induction intensity is enhanced.

[0059] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0060] In the description of the present invention, unless otherwise specified, "multiple" means two or more than two; the orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. An automobile variable inertia dual-mass flywheel based on electromagnetic induction, characterized in that: The invention comprises a basic structure, a current sensing device (7) and an inertia regulating device (9), wherein the basic structure is located on the right side of a dual-mass flywheel, the current sensing device (7) is located in the middle of the dual-mass flywheel, the inertia regulating device (9) is located on the left side of the dual-mass flywheel, and a connecting plate (8) is provided between the current sensing device (7) and the inertia regulating device (9); The basic structure comprises a primary flywheel (4), a starter gear ring (5) spot-welded on the circumference of the primary flywheel (4), two arc springs (3) arranged in a groove on the right side of the primary flywheel (4), a flange (2) arranged in the primary flywheel (4) and compressing the arc springs (3), and a secondary flywheel (1) connected to the flange (2) by screws; The centers of the primary flywheel (4) and the flange (2) are both provided with corresponding axial holes, the two axial holes are connected via a rotating shaft (10), eight corresponding threaded holes are evenly arranged around the axial hole of the flange (2), the flange (2) and the secondary flywheel (1) are fixedly connected via eight screws, the protrusion of the flange (2) is located in the gap between the two arc springs (3), and the center of the secondary flywheel (1) is connected to the bearing; An extended annular cavity is provided on the left side of the primary flywheel (4), two switch holes are provided at the center of the circumference of the annular cavity, four corresponding threaded holes are provided at the top of the circumference of the annular cavity, and the current sensing device (7) is located in the annular cavity; The current sensing device (7) comprises a magnetic isolation cavity (71) fixedly connected to the annular cavity of the primary flywheel (4) by screws, a first fixed permanent magnet (72) passing through the rotating shaft (10) and located in the magnetic isolation cavity (71), a copper plate (73) with four terminal posts symmetrically distributed on the surface, a plurality of washers (74) sleeved on the shaft shoulder of the rotating shaft (10), a separate fixing ring (75) for fixing the first fixed permanent magnet (72), and a magnetic isolation gland (76) with four corresponding threaded holes arranged on the side. The bottom and the top of the circumference of the magnetic isolation cavity (71) are both provided with four corresponding threaded holes, the washer (74) and the separate fixing ring (75) can adjust and fix the positions of the first fixed permanent magnet (72) and the copper disk (73), the copper disk (73) is fixed by a threaded combination of the rotating shaft (10), the first fixed permanent magnet (72) and the copper disk (73) are both located in the magnetic isolation cavity (71), and the magnetic isolation pressure cover (76) and the magnetic isolation cavity (71) are assembled by screws; The inertia adjustment device (9) comprises an outer support ring (91) supporting the entire adjustment device, a second fixed permanent magnet (92) generating electromagnetic force, a moving mass component (93) fixed to the outer support ring (91) by screws, a magnetic isolation sleeve (94) sleeved and fixedly connected to the moving mass component (93), and a support cover (95) fixed to the outer support ring (91) by screws; The current generated by the copper disk (73) is connected to the second fixed permanent magnet (92) via a wire.

2. The variable inertia dual-mass flywheel for automobiles based on electromagnetic induction according to claim 1, characterized in that: Two through holes are distributed on the surface of the magnetic isolation pressure cover (76), and the wires connected to the copper plate (73) terminal blocks can pass through the through holes.

3. The variable inertia dual-mass flywheel for automobiles based on electromagnetic induction according to claim 2, characterized in that: An axial hole is provided at the center of the outer support ring (91), and four corresponding threaded holes are evenly distributed around the axial hole. Four magnet fixing seats are provided on the side surface of the outer support ring (91) along the circumferential direction. An upper and lower coil are wound around the second fixed permanent magnet (92). The second fixed permanent magnet (92) is fixed to the magnet fixing seat of the outer support ring (91) by screws and is inserted into the magnetic isolation sleeve (94). The movable mass component (93) is a multi-component structure.

4. The variable inertia dual-mass flywheel for automobiles based on electromagnetic induction according to claim 3, characterized in that: The movable mass component (93) comprises a central support frame (933) fixed on an outer support ring (91), a spring (932) sleeved on a guide column of the central support frame (933) and welded at one end to the side of the central support frame (933), and a movable permanent magnet (931) welded to the other end of the spring (932) and sleeved on the guide column of the central support frame (933).

5. The variable inertia dual-mass flywheel for automobiles based on electromagnetic induction according to claim 4, characterized in that: The central support frame (933) is a support frame composed of a square support body and a guide column. A square blind hole is provided at the center of the square support body, a circular through hole is provided on the bottom surface of the square support body, and four corresponding threaded holes are evenly distributed around the circular through hole. The guide column is welded to the four sides of the square support body. The central support frame (933) is fixed to the center of the bottom of the outer support ring (91) by screws. The sides of the central support frame (933) are arranged with corresponding threaded holes. The magnetic isolation sleeve (94) is fixed to the central support frame (933) by screwing.

6. The variable inertia dual-mass flywheel for automobiles based on electromagnetic induction according to claim 5, characterized in that: A control switch (6) is glued to the switch hole in the center of the circular cavity on the left side of the primary flywheel (4). There are two control switches (6) for controlling the on and off of the induced current.

7. The variable inertia dual-mass flywheel for automobiles based on electromagnetic induction according to claim 6, characterized in that: The connecting plate (8) is fixed to the annular cavity extending from the left side of the primary flywheel (4) by means of screws, and one side of the connecting plate (8) is fixedly connected to the inertia adjusting device (9) by means of screws.

8. The variable inertia dual-mass flywheel for automobiles based on electromagnetic induction according to claim 7, characterized in that: The connecting plate (8) and the outer supporting ring (91) of the inertia adjusting device (9) are both provided with two through holes, which facilitate connecting the current sensing device (7) and the inertia adjusting device (9) with a wire.

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