Flywheel switching device, vehicle, control method, and storage medium

Abstract

Provided are a flywheel switching device, a vehicle, and a control method. In the flywheel switching device, a sliding member (1) is provided on a transmission input shaft (4) and can slide in the axial direction of the transmission input shaft (4); locking members (2) are provided on the transmission input shaft (4), and the locking members (2) abut against and are connected to the sliding member (1); under the sliding driving of the sliding member (1), the locking members (2) can slide in the radial direction of the transmission input shaft (4) to be embedded into locking member accommodating parts (503) on a primary flywheel (5), so as to lock the primary flywheel (5), and a reset member (3) stores energy; and when the sliding member (1) cancels the sliding driving on the locking members (2), the reset member (3) releases energy to drive the sliding member (1) to reset, so as to unlock the primary flywheel (5). The flywheel switching device is applied to a power system of a vehicle, and can implement free switching between a single mass flywheel and a dual mass flywheel, so that the vehicle can have both the comfort of the dual mass flywheel and the reliability of the single mass flywheel.

Description

Flywheel conversion device, vehicle, control method and storage medium

[0001] This disclosure claims priority to a patent application filed with the Patent Office of China on August 25, 2023, with application number 202311080707.3 and titled “Flywheel Conversion Device, Vehicle and Control Method,” the entire contents of which are incorporated herein by reference. Technical Field

[0002] The present disclosure relates to the technical field of vehicle components, and in particular to a flywheel conversion device. The present disclosure also relates to a vehicle using the flywheel conversion device, a vehicle control method for the vehicle, and a storage medium capable of implementing the vehicle control method. Background Art

[0003] As people's living standards improve, cars have become an essential means of transportation. Car owners are becoming younger, and driving comfort, rapid power response, and reliability have become increasingly important aspects of a vehicle.

[0004] Existing vehicles typically use a single-mass flywheel or dual-mass flywheel between the engine and transmission. Single-mass flywheels offer poor vibration damping, and with the introduction of six-speed transmissions, transmission noise is noticeable, making it difficult for customers to accept and resulting in a poor user experience.

[0005] When a dual-mass flywheel is used in a vehicle, the DMF (Dual Mass Flywheel) is prone to resonance and spring breakage when the engine is started, resulting in slow starting response and clutch burning.

[0006] In view of this, the present disclosure aims to provide a flywheel conversion device, which is installed in the power system of a vehicle, so that the dual-mass flywheel can be used as both a single-mass flywheel and a dual-mass flywheel.

[0007] To achieve the above objectives, the technical solution of the present disclosure is implemented as follows:

[0008] A flywheel conversion device includes a sliding member, a locking member, and a reset member, wherein:

[0009] The sliding member is provided on the transmission input shaft and is capable of sliding along the axial direction of the transmission input shaft;

[0010] The locking member is provided on the transmission input shaft, and the locking member and the sliding member are abutted and connected;

[0011] The reset member is provided between the locking member and the transmission input shaft, or the reset member is provided between the locking member and the primary flywheel of the dual mass flywheel;

[0012] Under the sliding drive of the sliding member, the locking member can slide along the radial direction of the transmission input shaft and be embedded in the locking member accommodating portion on the primary flywheel to lock the primary flywheel, and the reset member stores energy; the sliding member cancels the sliding drive of the locking member, and the reset member releases energy, which can drive the locking member to reset and release the lock of the primary flywheel.

[0013] Furthermore, a cavity is provided in the transmission input shaft, and a first opening communicating with the cavity is provided on the transmission input shaft;

[0014] The sliding member is arranged in the cavity, and the locking member is arranged at the first opening.

[0015] The sliding member is provided with a first inclined surface, the locking member is provided with a second inclined surface, and the first inclined surface and the second inclined surface are abutted and connected.

[0016] Furthermore, the reset member includes an elastic sheet arranged in the cavity, one end of the elastic sheet is fixedly connected to the transmission input shaft, and the other end is connected to the locking member.

[0017] Furthermore, there are a plurality of first openings, and the plurality of first openings are distributed at intervals around the circumference of the transmission input shaft;

[0018] The locking members correspond to the first openings one by one, and each locking member is provided at the corresponding first opening;

[0019] The elastic pieces correspond to the locking pieces one by one, and one end of each elastic piece is fixedly connected to the transmission input shaft, and the other end is connected to the locking piece;

[0020] The locking member accommodating portions correspond to the locking members one by one, and each locking member can be respectively embedded in the corresponding locking member accommodating portion.

[0021] Furthermore, the transmission input shaft is provided with a guide post extending into the cavity, and the sliding member is sleeved on the guide post;

[0022] The transmission input shaft is provided with a second opening communicating with the cavity, and the sliding member is provided with an external force receiving portion extending from the second opening to the outside of the transmission input shaft;

[0023] The sliding member receives the sliding driving force of the sliding driving part through the external force receiving part. The sliding driving part includes a hydraulic release bearing sleeved on the transmission input shaft.

[0024] Furthermore, there are multiple second openings, and the multiple second openings are distributed at intervals around the circumference of the transmission input shaft. The external force receiving portions correspond to the first openings one by one, and each external force receiving portion extends from the corresponding second opening to the outside of the transmission input shaft; and / or,

[0025] The sliding member includes a sliding member body sleeved on the guide column and a connecting piece connected to the sliding member body. The external force receiving portion includes an external force receiving piece connected to the connecting piece, and the external force receiving piece is in a curved arc shape.

[0026] Compared with the prior art, the present disclosure has the following advantages:

[0027] The flywheel conversion device disclosed herein is installed in a vehicle's powertrain. A locking member is provided on the transmission input shaft, which can lock or unlock the primary flywheel. The transmission input shaft is connected to the secondary flywheel, thereby enabling the primary and secondary flywheels to be locked or unlocked. This allows the dual-mass flywheel to function as either a single-mass flywheel or a dual-mass flywheel. This allows the vehicle to achieve the comfort of a dual-mass flywheel while also achieving the quick start of a single-mass flywheel. Furthermore, the device prevents DMF resonance spring breakage and reduces the probability of clutch plate ablation.

[0028] Furthermore, the sliding member is positioned within the cavity, and the locking member is positioned at the first opening, resulting in a compact overall structure that is easy to assemble and arrange. The abutment and connection between the first inclined surface of the sliding member and the second inclined surface of the locking member facilitates the sliding member to push the locking member to slide smoothly. The reset member utilizes an elastic sheet connected to the locking member, resulting in a simple structure, easy processing, and convenient installation. The presence of multiple first openings, locking members, elastic sheets, and locking member accommodating portions facilitates rapid locking of the locking member with the primary flywheel.

[0029] In addition, a guide post is provided, and the sliding member is mounted on the guide post, which facilitates the smooth and steady sliding of the sliding member. A second opening is provided, so that the external force receiving portion of the sliding member extends from the second opening to the outside of the transmission input shaft, facilitating the arrangement of the sliding drive unit. The sliding drive unit can also utilize an existing hydraulic release bearing, resulting in a simple overall structure and low cost.

[0030] The presence of multiple second openings and external force receiving portions facilitates the application of a balanced sliding driving force to the sliding member. The sliding member comprises a sliding member body and a connecting piece, while the external force receiving portion comprises an external force receiving piece connected to the connecting piece. This reduces the material consumption and results in a lighter overall structure. The curved shape of the external force receiving piece increases the force-bearing area, effectively receiving the sliding driving force of the sliding driving member.

[0031] Another object of the present disclosure is to provide a vehicle, which is provided with a transmission and a dual-mass flywheel, and a flywheel conversion device as described above is provided between the transmission and the dual-mass flywheel.

[0032] The vehicle disclosed in the present invention can realize the free conversion between a single-mass flywheel and a dual-mass flywheel by applying the aforementioned flywheel conversion device, so that the vehicle can have both the comfort of a dual-mass flywheel and the reliability of a single-mass flywheel, and can start quickly. At the same time, it can also prevent DMF resonance spring breakage and reduce the probability of clutch plate burning.

[0033] Another object of the present disclosure is to provide a vehicle control method, the method comprising:

[0034] After the vehicle is powered on, the primary and secondary flywheels of the dual-mass flywheel are controlled to enter a locked state;

[0035] After the primary flywheel and the secondary flywheel enter the locked state, start the engine;

[0036] Determine whether the vehicle is in idle condition;

[0037] When the vehicle is in an idling condition, the primary flywheel and the secondary flywheel are controlled to release the locking state.

[0038] Further, after controlling the primary flywheel and the secondary flywheel to release the locked state;

[0039] Determine whether the vehicle is in the starting condition;

[0040] When the vehicle is in the starting condition, the primary flywheel and the secondary flywheel are controlled to enter the locked state.

[0041] Furthermore, after the vehicle starts, it is determined whether the vehicle is in a driving condition;

[0042] When the vehicle is in a driving condition, the primary flywheel and the secondary flywheel are controlled to release the locked state.

[0043] The vehicle control method disclosed in the present invention enables the vehicle to have both the comfort of a dual-mass flywheel and the reliability of a single-mass flywheel, and can start quickly. At the same time, it can also prevent DMF resonance spring breakage and reduce the probability of clutch plate burning.

[0044] At the same time, the present disclosure also proposes a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the vehicle control method described above is implemented.

[0045] The computing and processing device and computer-readable storage medium disclosed herein have the same beneficial effects as the aforementioned vehicle control method relative to the prior art, and will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] The accompanying drawings, which constitute part of this disclosure, are used to provide a further understanding of the disclosure. The exemplary embodiments of the disclosure and their descriptions are used to explain the disclosure and do not constitute an improper limitation of the disclosure. In the accompanying drawings:

[0047] FIG1 is a schematic structural diagram of a flywheel conversion device in an application state according to a first embodiment of the present disclosure;

[0048] FIG2 is a front view of the flywheel conversion device in the application state according to the first embodiment of the present disclosure;

[0049] FIG3 is a cross-sectional view along line AA in FIG2 ;

[0050] FIG4 is a schematic structural diagram of a primary flywheel according to a first embodiment of the present disclosure;

[0051] FIG5 is a schematic structural diagram of the input shaft body according to the first embodiment of the present disclosure;

[0052] FIG6 is a schematic structural diagram of a sleeve according to a first embodiment of the present disclosure;

[0053] FIG7 is a schematic structural diagram of a locking member and a reset member according to the first embodiment of the present disclosure;

[0054] FIG8 is another structural schematic diagram of the locking member and the reset member according to the first embodiment of the present disclosure;

[0055] FIG9 is a schematic structural diagram of a sliding member according to a first embodiment of the present disclosure;

[0056] [Corrected 03.07.2024 in accordance with Article 91]

[0057] [Corrected 03.07.2024 in accordance with Article 91]

[0058] Description of reference numerals:

[0059] 1. Sliding member; 2. Locking member; 3. Reset member; 4. Transmission input shaft; 5. Primary flywheel;

[0060] 101. Sliding member body; 102. Connecting piece; 103. External force receiving portion;

[0061] 1011. The first inclined plane; 201. The second inclined plane;

[0062] 401, input shaft body; 402, sleeve; 403, cavity; 404, guide post; 405, groove;

[0063] 4021, first opening; 4022, second opening;

[0064] 501. Flange; 502. Spline teeth; 503. Locking member accommodating portion. DETAILED DESCRIPTION

[0065] The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments. Example 1

[0066] This embodiment relates to a flywheel conversion device that can be applied to the power system of a vehicle to achieve free conversion between a single-mass flywheel and a dual-mass flywheel, so that the vehicle can have both the comfort of a dual-mass flywheel and the reliability of a single-mass flywheel.

[0067] Based on the above design concepts, an exemplary structure of the flywheel conversion device of this embodiment is shown in Figures 1 to 3. Overall, the flywheel conversion device primarily comprises a sliding member 1, a locking member 2, and a reset member 3. The sliding member 1 is disposed on the transmission input shaft 4 and is capable of sliding axially along the transmission input shaft 4. The locking member 2 is also disposed on the transmission input shaft 4, and the locking member 2 and the sliding member 1 are abuttingly connected. The reset member 3 is disposed between the locking member 2 and the transmission input shaft 4, or between the locking member 2 and the primary flywheel 5 of the dual-mass flywheel.

[0068] Under the sliding drive of the sliding member 1, the locking member 2 can slide along the radial direction of the transmission input shaft 4 and be embedded in the locking member accommodating portion 503 on the primary flywheel 5 to lock the primary flywheel 5, and the reset member 3 stores energy. If the sliding member 1 cancels the sliding drive on the locking member 2, the reset member 3 releases energy and can drive the locking member 2 to reset, thereby releasing the lock on the primary flywheel 5.

[0069] Based on the above description of the overall structure and in order to facilitate a better understanding of this embodiment, the overall structure of the dual-mass flywheel is first described here. It mainly includes a primary flywheel 5 and a secondary flywheel. There is an annular installation space between the primary flywheel 5 and the secondary flywheel. A spring shock absorber is installed in the installation space, and the spring shock absorber connects the two parts of the flywheel into a whole.

[0070] Next, the structure of the primary flywheel 5 is briefly described. As shown in Figure 4, it is a schematic structural diagram of the primary flywheel 5. The main structure of the primary flywheel 5 can refer to the structure in the prior art. It mainly includes a flywheel body and a flange 501 connected to one side of the flywheel body. The flange 501 is specifically arranged on the side of the primary flywheel 5 facing the secondary flywheel.

[0071] In this embodiment, a through hole is formed in the flange 501, and the primary flywheel 5 can be mounted on the transmission input shaft 4 through the through hole. An internal spline is formed on the hole wall of the through hole, which includes a plurality of spline teeth 502. The plurality of spline teeth 502 are distributed at intervals around the circumference of the through hole, and the gaps between adjacent spline teeth 502 constitute the locking member accommodating portion 503 of this embodiment.

[0072] As a preferred embodiment, as shown in Figures 5 and 6 , the transmission input shaft 4 primarily comprises an input shaft body 401 and a sleeve 402. Specifically, the input shaft body 401 and sleeve 402 are detachably connected. In this embodiment, a groove 405 is provided at the end of the input shaft body 401, with internal threads formed on the circumferential wall of the groove 405. The outer periphery of the sleeve 402 is provided with external threads, so that the input shaft body 401 and sleeve 402 are threadedly connected via the internal and external threads. Furthermore, the input shaft body 401 and sleeve 402 enclose a cavity 403. As shown in Figure 3 , the left side of the cavity 403 is open.

[0073] In a preferred embodiment, the transmission input shaft 4 is provided with a guide post 404 extending into the cavity 403. The axial direction of the guide post 404 is aligned with the axial direction of the input shaft body 401. The sliding member 1 described below can be mounted on the guide post 404, so that the guide post 404 can guide the sliding member 1 for smooth and stable sliding. The guide post 404 and the input shaft body 401 can be manufactured separately and then fixedly connected together, or the guide post 404 and the input shaft body 401 can be integrally formed.

[0074] It should be noted that the transmission input shaft 4 includes an input shaft body 401 and a sleeve 402, which enclose a cavity 403 and facilitate the installation and assembly of the slider 1 and the locking member 2. It is understood that the input shaft body 401 and the sleeve 402 can be connected by welding, riveting, or other methods other than threaded connection. Furthermore, the input shaft body 401 and the sleeve 402 can be manufactured as separate parts and then connected together, or they can be formed as a single piece.

[0075] As a preferred embodiment, as shown in Figures 3, 8 and 9, the transmission input shaft 4 is provided with a first opening 4021 that is connected to the cavity 403, the sliding member 1 is arranged in the cavity 403, and the locking member 2 is arranged at the first opening 4021, and a first inclined surface 1011 is provided on the sliding member 1. In Figure 3, along the left movement direction of the sliding member 1, the first inclined surface 1011 gradually tilts from right to left from the outside to the axial center line of the transmission input shaft 4, and a second inclined surface 201 is provided on the locking member 2. The inclination angle of the second inclined surface 201 is consistent with the inclination angle of the first inclined surface 1011, and the sliding member 1 and the locking member 2 are connected by abutting the first inclined surface 1011 and the second inclined surface 201.

[0076] Here, the sliding member 1 is arranged in the cavity 403, and the locking member 2 is arranged at the first opening 4021. The overall structure is compact and easy to assemble and arrange. The first inclined surface 1011 of the sliding member 1 and the second inclined surface 201 of the locking member 2 are abutted and connected, which is beneficial for the sliding member 1 to push the locking member 2 to slide smoothly.

[0077] In a preferred embodiment, as shown in FIG3 , FIG7 and FIG8 , the reset member 3 includes an elastic sheet disposed in the cavity 403 , one end of the elastic sheet is fixedly connected to the transmission input shaft 4 , and the other end is connected to the locking member 2 .

[0078] In this embodiment, the elastic sheet is partially bent toward the interior of the cavity 403. One end of the elastic sheet is secured to the inner wall of the sleeve 402 via a rivet (not shown), while the other end is connected to the locking member 2. It should be noted that the reset member 3 and the locking member 2 can be integral or made as separate components and then connected together. In addition to being secured to the inner wall of the sleeve 402 via rivets, the elastic sheet can also be secured to the inner wall of the sleeve 402 via screws, welding, or other methods.

[0079] In the above structure, the reset member 3 is an elastic sheet connected to the locking member 2, which has a simple structure, is easy to process, and is easy to install. In addition, the reset member 3 can of course adopt other structures. For example, a mounting block can be provided in the center of the cavity 403, and the mounting block can be installed on the aforementioned guide column 404, for example. A spring connected between the locking member 2 and the mounting block can be provided circumferentially of the mounting block, or a component that can store energy when the locking member 2 moves outward can be provided. In addition, a mounting hole can be provided at the bottom of the groove of the aforementioned locking member accommodating portion 503, and a component that can store energy when the locking member 2 moves outward, such as a spring, can be installed in the mounting hole.

[0080] In a preferred embodiment, a plurality of first openings 4021 are provided on sleeve 402, spaced apart circumferentially around transmission input shaft 4. Locking members 2 correspond one-to-one with each first opening 4021, and each locking member 2 is positioned at a corresponding first opening 4021. Elastic plates correspond one-to-one with each locking member 2, with one end of each elastic plate being fixedly attached to transmission input shaft 4 and the other end being connected to locking member 2. In the above structure, the plurality of first openings 4021, locking members 2, elastic plates, and locking member accommodating portions 503 facilitates rapid locking of the locking members 2 with the primary flywheel 5.

[0081] As shown in Figures 2 and 3, the locking member accommodating portions 503 correspond one-to-one to the locking members 2. In the state shown in Figure 3, if the locking members 2 are driven to the left by the sliding member 1, each locking member 2 moves radially outward from the cavity 403 along the transmission input shaft 4, and can be respectively embedded in the corresponding locking member accommodating portions 503, while the elastic sheet stores energy.

[0082] As shown in the above structure, after the multiple locking members 2 move outward, they can be engaged with the internal splines of the aforementioned flange 501, similar to the external splines formed on the transmission input shaft 4, so that the transmission input shaft 4 and the primary flywheel 5 rotate synchronously, that is, the locking members 2 lock the primary flywheel 5.

[0083] After the sliding driving force on the sliding member 1 is removed, or the sliding member 1 moves to the right, the elastic sheet releases energy, and each locking member 2 moves radially along the transmission input shaft 4 into the cavity 403, and can be disengaged from the corresponding locking member accommodating portion 503, so that the transmission input shaft 4 and the primary flywheel 5 rotate separately, and the two can rotate relative to each other, that is, the locking member 2 unlocks the primary flywheel 5.

[0084] It should be noted here that in order for each locking member 2 to engage smoothly with the internal spline on the flange 501, an arc-shaped chamfered structure can be provided on the locking member 2 to guide the locking member 2 to embed into the locking member accommodating portion 503, and an arc-shaped chamfered structure can also be provided on the internal spline on the flange 501 to guide the locking member 2 to embed into the locking member accommodating portion 503. Of course, it is also possible to provide an arc-shaped chamfered structure on either the locking member 2 or the internal spline on the flange 501.

[0085] In a preferred embodiment, the transmission input shaft 4 is provided with a second opening 4022 communicating with the cavity 403. The sliding member 1 is provided with an external force receiving portion 103 extending from the second opening 4022 to the exterior of the transmission input shaft 4. The sliding member 1 receives the sliding driving force of the sliding drive unit via the external force receiving portion 103. In this structure, the provision of the second opening 4022 allows the external force receiving portion 103 on the sliding member 1 to extend from the second opening 4022 to the exterior of the transmission input shaft 4, facilitating the arrangement of the sliding drive unit.

[0086] In a preferred embodiment, the sliding drive unit includes a hydraulic release bearing sleeved on the transmission input shaft 4. The specific structure of the hydraulic release bearing is not shown in the figure. Its structure and installation method can refer to the structure in the prior art, so that the overall structure is simple and the cost is low.

[0087] Depending on the structure of the power system of the existing vehicle, the hydraulic release bearing can be a single hydraulic release bearing or a double hydraulic release bearing, which can be driven by the existing electric booster and can apply a leftward sliding driving force to the sliding member 1, or the leftward sliding driving force applied to the sliding member 1 can be removed.

[0088] It should be noted that, in addition to the above-described structure, the sliding drive unit can also employ other structures. For example, a drive member capable of outputting a linear driving force can be mounted on the transmission input shaft 4 to apply a leftward sliding driving force to the sliding member 1. It is also worth mentioning that the external force receiving portion 103 does not need to extend outside the transmission input shaft 4 through the second opening 4022. In this case, a drive member capable of outputting a linear driving force can be disposed within the cavity 403, with the power output end of the drive member connected to the sliding member 1.

[0089] As a preferred embodiment, there are multiple second openings 4022, and the multiple second openings 4022 are distributed at circumferential intervals around the transmission input shaft 4, and the external force receiving portion 103 corresponds one-to-one to the first opening 4021. Each external force receiving portion 103 extends from the corresponding second opening 4022 outside the transmission input shaft 4, which is conducive to applying a balanced sliding driving force to the sliding member 1.

[0090] In a preferred embodiment, the slider 1 includes a slider body 101 that is sleeved onto a guide post 404, and a connecting piece 102 connected to the slider body 101. In this embodiment, the slider body 101 has a cylindrical shape at one end and a conical shape at another end, and has a guide hole formed therein that sleeves onto the guide post 404.

[0091] Preferably, the external force bearing part 103 includes an external force bearing piece connected to the connecting piece 102. There are multiple external force bearing pieces, and the connecting pieces 102 correspond to the external force bearing pieces one by one. Each external force bearing piece is connected to the sliding part body 101 through the corresponding connecting piece 102. In this way, less material is used and the overall structure is lighter.

[0092] Preferably, the external force receiving piece is in a curved arc shape, with its middle portion protruding outward in the radial direction of the transmission input shaft 4 , which is beneficial for increasing the force receiving area and can better receive the sliding driving force of the sliding driving part.

[0093] The flywheel conversion device of this embodiment is installed in a vehicle's powertrain. Because a locking member 2 is located on a transmission input shaft 4, it can lock or unlock a primary flywheel 5. The transmission input shaft 4 is connected to a secondary flywheel. This allows the primary flywheel 5 and the secondary flywheel to be locked or unlocked, allowing the dual-mass flywheel to function as both a single-mass flywheel and a dual-mass flywheel. This allows the vehicle to achieve both the comfort of a dual-mass flywheel and the quick start of a single-mass flywheel. It also prevents DMF spring breakage due to resonance and reduces the probability of clutch plate ablation. Example 2

[0094] This embodiment also relates to a vehicle having a transmission and a dual-mass flywheel, wherein a flywheel conversion device as described in Example 1 is disposed between the transmission and the dual-mass flywheel. The structure and installation method of the flywheel conversion device can be referred to the above description.

[0095] At the same time, this embodiment also relates to a vehicle control method, which can be implemented by the vehicle's ECU (Electronic Control Unit) or VCU (Vehicle Control Unit). The following description takes the implementation by the ECU as an example. When implementing by the VCU, the VCU can be replaced by the ECU below.

[0096] [Corrected 03.07.2024 according to Rule 91] The method mainly comprises the following steps:

[0097] S101: After the vehicle is powered on, the primary flywheel 5 and the secondary flywheel of the dual-mass flywheel are controlled to enter a locked state.

[0098] The method of powering on the vehicle can refer to the existing method. After the vehicle is powered on, the primary flywheel 5 and the secondary flywheel of the dual-mass flywheel are controlled to enter a locked state. For example, the ECU is connected to a driving component that can drive the sliding member 1 to slide. A signal can be sent to the driving component through the ECU. The driving component can be, for example, the electric booster in Example 1. In the state shown in Figure 3, the electric booster performs an operation to move a working surface of the hydraulic release bearing to the left, and the sliding member 1 moves to the left accordingly. The locking member 2 locks the primary flywheel 5, that is, the primary flywheel 5 and the secondary flywheel enter a locked state.

[0099] It should be noted here that after the vehicle is powered on, preferably, after the ECU recognizes that the vehicle speed is 0 km / h and the speed is 0 rpm, the ECU sends a signal to the electric booster. In addition, after the vehicle is powered on, it is also possible to directly control the primary flywheel 5 and the secondary flywheel of the dual-mass flywheel to enter a locked state.

[0100] S102: After the primary flywheel 5 and the secondary flywheel of the dual-mass flywheel enter a locked state, start the engine.

[0101] It should be noted here that the timing can be started after the ECU sends a signal to the electric booster. When the time exceeds the preset time threshold, it is determined that the primary flywheel 5 and the secondary flywheel of the dual-mass flywheel have entered the locked state, and the engine is started. The specific method of starting the engine can refer to the existing method.

[0102] In addition to using timing to determine whether the primary and secondary flywheels of the dual-mass flywheel are locked, other methods are also possible. For example, a travel switch can be provided on the transmission. When the travel switch is triggered by the working surface of the hydraulic release bearing, it indicates that the primary and secondary flywheels of the dual-mass flywheel are locked, and this trigger signal is transmitted to the ECU. Alternatively, a pressure sensor can be used to detect the hydraulic pressure applied to the hydraulic release bearing. When the hydraulic pressure reaches a preset pressure threshold, it indicates that the primary and secondary flywheels of the dual-mass flywheel are locked, and this pressure signal is transmitted to the ECU.

[0103] S103: Determine whether the vehicle is in an idling condition.

[0104] Specifically, determining whether the vehicle is in idle condition includes obtaining engine speed, vehicle speed and vehicle gear information. When the engine speed is not less than 700rpm, the vehicle speed is 0km / h, and the vehicle gear is in neutral, the ECU determines that the vehicle is in idle condition.

[0105] It should be noted here that the methods for obtaining the engine speed, vehicle speed, and vehicle gear can refer to the existing methods. The obtained engine speed, vehicle speed, vehicle gear and other information are transmitted to the ECU, and the ECU executes the following steps.

[0106] S104: When the vehicle is in an idling condition, the primary flywheel 5 and the secondary flywheel of the dual-mass flywheel are controlled to release the locked state.

[0107] In detail, the primary flywheel 5 and the secondary flywheel of the dual mass flywheel are controlled to release the locked state. For example, the ECU can send a signal to a driving component that can drive the sliding member 1 to slide, such as the electric booster in Example 1. The electric booster performs an operation to move the working surface of the hydraulic release bearing to the right. In the state shown in Figure 3, the sliding member 1 moves to the right, and the locking member 2 releases the lock on the primary flywheel 5, that is, the primary flywheel 5 and the secondary flywheel are released from the locked state.

[0108] It should be noted here that if the vehicle is not in an idling condition, the primary flywheel 5 and the secondary flywheel of the dual mass flywheel can be controlled to remain in a locked state.

[0109] [Corrected 03.07.2024 according to Rule 91] As a preferred embodiment, after controlling the primary flywheel 5 and the secondary flywheel of the dual mass flywheel to release the locked state, the aforementioned vehicle control method further includes:

[0110] S105: Determine whether the vehicle is in a starting condition.

[0111] Specifically, determining whether the vehicle is in the starting condition includes: obtaining the engine speed, vehicle gear information, clutch low switch information and vehicle speed. When the engine speed is not less than 700rpm, the vehicle gear is in forward gear or reverse gear, the clutch low switch is triggered and the vehicle speed is 0km / h, the ECU determines that the vehicle is in the starting condition.

[0112] It should be noted that the method for obtaining the clutch low switch information can refer to the existing method, and the information of the clutch low switch being triggered is transmitted to the ECU, and the ECU executes the following steps.

[0113] S106. When the vehicle is in the starting condition, the primary flywheel 5 and the secondary flywheel of the dual-mass flywheel are controlled to enter a locked state. The specific control method is still referred to the above description.

[0114] S107: After the vehicle starts, determine whether the vehicle is in a driving condition.

[0115] In detail, determining whether the vehicle is in a driving condition includes obtaining the engine speed, vehicle gear information, clutch high-position switch information and vehicle speed; when the engine speed is not less than 700rpm, the vehicle gear is in forward gear or reverse gear, the clutch high-position switch is triggered and the vehicle speed is not less than 5km / h, the ECU determines that the vehicle is in a driving condition.

[0116] It should be noted here that when the vehicle is not in a driving condition, the primary flywheel 5 and the secondary flywheel of the dual mass flywheel can be controlled to remain in a locked state.

[0117] In addition, the method for obtaining the clutch high position switch information can refer to the existing method, and the information of the clutch high position switch being triggered is transmitted to the ECU, and the ECU executes the following steps.

[0118] S108. When the vehicle is in a driving condition, the primary flywheel 5 and the secondary flywheel of the dual-mass flywheel are controlled to release the locked state. The specific control method can still refer to the above description.

[0119] Finally, it should be noted that the above ECU or VCU can adopt the existing structure on the vehicle. In addition, a controller can also be set up to achieve the above functions.

[0120] The vehicle and vehicle control method of this embodiment have the same beneficial effects as the flywheel conversion device of the first embodiment relative to the prior art, and will not be described in detail here.

[0121] The present embodiment also relates to a computer program, which includes computer-readable codes. When the computer-readable codes are run on a computing device such as a computer, the vehicle control method of the present embodiment is executed.

[0122] At the same time, this embodiment also relates to a computing and processing device, including a processor and a memory, wherein the memory stores a computer-readable program code. When the processor executes the computer-readable program code, the computing and processing device executes the above vehicle control method.

[0123] The computing and processing device of this embodiment may generally be a vehicle ECU (Electronic Control Unit). The processor may be, for example, a microprocessor or a digital signal processor, and the memory may be an electronic memory such as flash memory, EEPROM (Electrically Erasable Programmable Read-Only Memory), or EPROM. The memory has storage space for the aforementioned computer program.

[0124] This embodiment also relates to a computer-readable storage medium, which is used to store a computer program. When the computer program is executed by a processor, it can implement the above vehicle control method.

[0125] At this time, a general example of a computer-readable storage medium is a memory. In addition, the computer-readable storage medium includes permanent and non-permanent, removable and non-removable media and can implement information storage by any method or technology.

[0126] Information can be computer-readable instructions, data structures, program modules, or other data. Examples of computer-readable storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory, or other memory technology, compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device.

[0127] The above are only preferred embodiments of the present disclosure and are not intended to limit the present disclosure. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present disclosure should be included in the scope of protection of the present disclosure.

Claims

1. A flywheel conversion device, characterized in that: It comprises a sliding member (1), a locking member (2) and a resetting member (3); The sliding member (1) is arranged on the transmission input shaft (4) and is capable of sliding along the axial direction of the transmission input shaft (4); The locking member (2) is arranged on the transmission input shaft (4), and the locking member (2) and the sliding member (1) are abutted and connected; The reset member (3) is arranged between the locking member (2) and the transmission input shaft (4), or the reset member (3) is arranged between the locking member (2) and the primary flywheel (5) of the dual mass flywheel; Under the sliding drive of the sliding member (1), the locking member (2) can slide along the radial direction of the transmission input shaft (4) and be embedded in the locking member accommodating portion (503) on the primary flywheel (5) to lock the primary flywheel (5), and the reset member (3) stores energy; when the sliding member (1) cancels the sliding drive on the locking member (2), the reset member (3) releases energy and can drive the locking member (2) to reset, so as to release the lock on the primary flywheel (5).

2. The flywheel conversion device according to claim 1, characterized in that: A cavity (403) is provided in the transmission input shaft (4), and a first opening (4021) communicating with the cavity (403) is provided on the transmission input shaft (4); The sliding member (1) is arranged in the cavity (403), and the locking member (2) is arranged at the first opening (4021); The sliding member (1) is provided with a first inclined surface (1011), and the locking member (2) is provided with a second inclined surface (201), and the first inclined surface (1011) and the second inclined surface (201) are abutted and connected.

3. The flywheel conversion device according to claim 2, characterized in that: The reset member (3) comprises an elastic sheet arranged in the cavity (403), one end of the elastic sheet is fixedly connected to the transmission input shaft (4), and the other end is connected to the locking member (2).

4. The flywheel conversion device according to claim 3, characterized in that: There are a plurality of the first openings (4021), and the plurality of the first openings (4021) are distributed at intervals in the circumferential direction of the transmission input shaft (4); The locking members (2) correspond to the first openings (4021) one by one, and each locking member (2) is arranged at the corresponding first opening (4021); The elastic sheets correspond to the locking members (2) one by one, and each of the elastic sheets has one end fixedly connected to the transmission input shaft (4) and the other end connected to the locking member (2); The locking member accommodating portions (503) correspond one to one with the locking members (2), and each locking member (2) can be respectively embedded in the corresponding locking member accommodating portion (503).

5. The flywheel conversion device according to claim 2, characterized in that: The transmission input shaft (4) is provided with a guide column (404) extending into the cavity (403), and the sliding member (1) is sleeved on the guide column (404).

6. The flywheel conversion device according to claim 5, characterized in that: The transmission input shaft (4) is provided with a second opening (4022) communicating with the cavity (403), and the sliding member (1) is provided with an external force receiving portion (103) extending from the second opening (4022) to the outside of the transmission input shaft (4); The sliding member (1) receives the sliding driving force of a sliding driving part through the external force receiving part (103), and the sliding driving part comprises a hydraulic release bearing sleeved on the transmission input shaft (4).

7. The flywheel conversion device according to claim 6, characterized in that: There are a plurality of second openings (4022), and the plurality of second openings (4022) are distributed at intervals around the circumference of the transmission input shaft (4); the external force receiving portions (103) correspond to the first openings (4021) one by one, and each of the external force receiving portions (103) extends from the corresponding second opening (4022) to the outside of the transmission input shaft (4).

8. The flywheel conversion device according to claim 6, characterized in that: The sliding member (1) comprises a sliding member body (101) sleeved on the guide column (404), and a connecting piece (102) connected to the sliding member body (101), and the external force receiving portion (103) comprises an external force receiving piece connected to the connecting piece (102), and the external force receiving piece is in a curved arc shape.

9. The flywheel conversion device according to any one of claims 2 to 8, characterized in that: The transmission input shaft (4) comprises an input shaft body (401) and a sleeve (402); The input shaft body (401) and the sleeve (402) are detachably connected and surround and form the cavity (403).

10. A vehicle, characterized in that: The vehicle is provided with a transmission and a dual-mass flywheel, and a flywheel conversion device according to any one of claims 1 to 9 is provided between the transmission and the dual-mass flywheel.

11. A vehicle control method of a vehicle as claimed in claim 10, characterized in that: The method comprises: After the vehicle is powered on, the primary flywheel (5) and the secondary flywheel of the dual-mass flywheel are controlled to enter a locked state; After the primary flywheel (5) and the secondary flywheel enter a locked state, starting the engine; Determine whether the vehicle is in idling condition; When the vehicle is in an idling condition, the primary flywheel (5) and the secondary flywheel are controlled to release the locked state.

12. The vehicle control method according to claim 11, characterized in that: After controlling the primary flywheel (5) and the secondary flywheel to release the locked state; Determine whether the vehicle is in the starting condition; When the vehicle is in a starting condition, the primary flywheel (5) and the secondary flywheel are controlled to enter a locked state.

13. The vehicle control method according to claim 12, characterized in that: After the vehicle starts, determine whether the vehicle is in a driving condition; When the vehicle is in a driving condition, the primary flywheel (5) and the secondary flywheel are controlled to release the locked state.

14. A computer-readable storage medium having a computer program stored thereon, characterized in that: The computer-readable storage medium is used to store a computer program, and when the computer program is executed by a processor, it can implement the vehicle control method as described in any one of claims 11 to 13.

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