Clutch pedal control method and device

Abstract

The invention discloses a clutch pedal control method and device.The method comprises the steps that in response to increase of pedal force for a clutch pedal, when the pedal force does not reach the maximum pedal force, whether the pedal stroke of the clutch pedal reaches a separation point or not is detected; controlling the engine and the gearbox to be separated in response to the pedal stroke reaching the separation point; after the pedal force reaches the maximum pedal force, responding to decrease of the pedal force, and detecting whether the pedal stroke reaches the meshing point or not; in response to the pedal travel reaching the engagement point, the engine is controlled to engage with the gearbox. The operation process of the clutch pedal can be simplified, the operation difficulty of the clutch pedal is reduced, and the comfort and safety of vehicle driving are improved.

Description

Technical Field

[0001] The present application relates to the field of vehicle control, and in particular to a clutch pedal control method and device. Background Art

[0002] The clutch is located in the flywheel housing between the engine and the gearbox. During the driving of the car, the clutch pedal is controlled to be depressed or released, so that the engine and gearbox are temporarily separated and gradually engaged to cut off or transfer the power input from the engine to the gearbox.

[0003] In the related art, the control difficulty of the clutch pedal is relatively high. When the user controls the clutch pedal, the user needs to have more driving experience to achieve smooth vehicle start and gear shifting. When the user does not have much driving experience, it is difficult to achieve smooth vehicle start and the vehicle driving safety is low. Summary of the invention

[0004] The embodiments of the present application provide a clutch pedal control method and device, which can simplify the operation process of the clutch pedal, reduce the difficulty of operating the clutch pedal, and improve the comfort and safety of vehicle driving.

[0005] In view of this, a first aspect of the present application provides a clutch pedal control method, the method comprising:

[0006] In response to an increase in a pedal force on a clutch pedal, when the pedal force has not reached a maximum pedal force, detecting whether a pedal stroke of the clutch pedal reaches a release point;

[0007] In response to the pedal stroke reaching the separation point, controlling the engine and the transmission to separate;

[0008] After the pedal force reaches the maximum pedal force, in response to a decrease in the pedal force, detecting whether the pedal stroke reaches an engagement point;

[0009] In response to the pedal travel reaching the engagement point, the engine is controlled to engage with the transmission.

[0010] Optionally, in the process where both the pedal force and the pedal stroke increase, when the pedal stroke reaches the maximum pedal stroke, the pedal force reaches the maximum pedal force.

[0011] Optionally, the engagement point is arranged at the maximum pedal travel;

[0012] After the pedal force reaches the maximum pedal force, in response to a decrease in the pedal force, detecting whether the pedal stroke reaches the engagement point comprises:

[0013] After the pedal force reaches the maximum pedal force, in response to a decrease in the pedal force, it is determined that the pedal stroke reaches the engagement point.

[0014] Optionally, after the pedal force reaches the maximum pedal force, in response to a decrease in the pedal force, detecting whether the pedal stroke reaches the engagement point comprises:

[0015] After the pedal force reaches the maximum pedal force, in response to the pedal stroke decreasing from the maximum pedal stroke, the pedal force decreases;

[0016] During the process of reducing the pedal force, it is detected whether the pedal stroke reaches the engagement point.

[0017] Optionally, in response to the pedal stroke reaching the engagement point, controlling the engine to engage with the gearbox comprises:

[0018] In response to the pedal stroke reaching the engagement point, controlling the engine to start engaging with the transmission;

[0019] In response to the pedal stroke reaching a synchronization point, the engine is controlled to fully engage with the gearbox.

[0020] Optionally, when the pedal stroke increases but does not reach the maximum pedal stroke, there is a first linear relationship between the pedal stroke and the pedal force; when the pedal stroke decreases from the maximum pedal stroke, there is a second linear relationship between the pedal stroke and the pedal force.

[0021] A second aspect of the present application provides a clutch pedal control device, the device comprising:

[0022] a first detection unit, configured to: in response to an increase in a pedal force on a clutch pedal, when the pedal force has not reached a maximum pedal force, detect whether a pedal stroke of the clutch pedal reaches a release point;

[0023] A first control unit, configured to: in response to the pedal stroke reaching the separation point, control the engine and the transmission to separate;

[0024] a second detection unit, configured to detect whether the pedal stroke reaches an engagement point in response to a decrease in the pedal force after the pedal force reaches the maximum pedal force;

[0025] The second control unit is used for controlling the engine to engage with the gearbox in response to the pedal stroke reaching the engagement point.

[0026] Optionally, in the process where both the pedal force and the pedal stroke increase, when the pedal stroke reaches the maximum pedal stroke, the pedal force reaches the maximum pedal force.

[0027] Optionally, the engagement point is arranged at the maximum pedal travel;

[0028] The second detection unit is specifically used for:

[0029] After the pedal force reaches the maximum pedal force, in response to a decrease in the pedal force, it is determined that the pedal stroke reaches the engagement point.

[0030] Optionally, the second detection unit is specifically used to:

[0031] After the pedal force reaches the maximum pedal force, in response to the pedal stroke decreasing from the maximum pedal stroke, the pedal force decreases;

[0032] During the process of reducing the pedal force, it is detected whether the pedal stroke reaches the engagement point.

[0033] It can be seen from the above technical solutions that this application has the following advantages:

[0034] The embodiment of the present application provides a clutch pedal control method and device, which detects whether the pedal stroke reaches the separation point in response to the increase of the pedal force on the clutch pedal when the pedal force has not reached the maximum pedal force; in response to the pedal stroke reaching the separation point, controls the separation of the engine and the transmission, and sets the position of the separation point before the position where the maximum pedal force appears. The separation point can be reached before the clutch pedal receives the maximum pedal force, so that the engine and the transmission are separated, which simplifies the operation process during the clutch pedal depression process, and avoids applying a greater force to the clutch pedal after the maximum pedal force, thereby avoiding deformation of the clutch pedal due to excessive force, and improving the service life of the clutch pedal and driving safety. After the pedal force reaches the maximum pedal force, in response to the decrease in the pedal force, it is detected whether the pedal stroke reaches the engagement point; in response to the pedal stroke reaching the engagement point, the engine and the gearbox are controlled to engage, and the engagement point can be reached in the process of the pedal force decreasing from the maximum pedal force, and the engine and the gearbox are controlled to engage, which simplifies the operation process when the clutch pedal is lifted, reduces the difficulty of operation during the process of lifting the clutch pedal, reduces the possibility of vehicle stalling and shaking during starting and shifting, achieves smooth starting and shifting of the vehicle, and improves the comfort and safety of vehicle driving. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 A clutch pedal force characteristic curve analysis diagram provided for related technology;

[0036] Figure 2 A method flow chart of a clutch pedal control method provided in an embodiment of the present application;

[0037] Figure 3 A clutch pedal force characteristic curve diagram provided by another embodiment of the present application;

[0038] Figure 4 A comparison diagram of clutch pedal force characteristic curves provided in an embodiment of the present application;

[0039] Figure 5 A schematic structural diagram of a clutch pedal control device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0040] The embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be construed as being limited to the embodiments described herein. Instead, these embodiments are provided to provide a more thorough and complete understanding of the present application. It should be understood that the drawings and embodiments of the present application are only for exemplary purposes and are not intended to limit the scope of protection of the present application.

[0041] In the related art, when the clutch pedal is controlled, due to the requirement of the clutch reserve stroke and the existence of the clutch release characteristic, the pedal force on the clutch pedal in the entire pedal stroke often shows a saddle line characteristic of first increasing and then decreasing, such as Figure 1 As shown, Figure 1 It is an analysis diagram of the clutch pedal force characteristic curve in the related technology. Among them, point M is used to describe the maximum pedal force N2 corresponding to the clutch pedal and the pedal stroke L2 corresponding to the maximum pedal force; point D is the separation point, which is used to describe the pedal force and pedal stroke corresponding to the separation of the engine and the gearbox; point E is the engagement point, which is used to describe the pedal force and pedal stroke corresponding to the engagement of the engine and the gearbox; N1 is the initial force corresponding to the clutch pedal during the pressing process, and L1 is the corresponding initial action stroke; L3 is the maximum pedal stroke corresponding to the clutch pedal; L4 is the distance between the engagement point E and the maximum pedal stroke during the lifting process of the clutch pedal; N5 is the maintenance force corresponding to the clutch pedal, and L5 is the pedal stroke under the maintenance force; N6 is the hysteresis corresponding to the same pedal stroke during the clutch pedal falling and lifting process. Due to the damping inside the clutch pedal, the corresponding pedal force curves are not the same during the two processes of the clutch pedal falling and lifting, and there is a certain pedal hysteresis.

[0042] according to Figure 1It can be seen that when the clutch pedal is pressed down, it first passes through point M corresponding to the maximum pedal force, and then passes through separation point D. The pedal stroke corresponding to separation point D is between the pedal stroke L2 corresponding to the maximum pedal force and the maximum pedal stroke. That is to say, when the clutch pedal is controlled, the engine and the gearbox are not separated after the maximum pedal force is passed. For users with insufficient driving experience, in order to find the separation point, they may apply a greater pedal force to the clutch pedal to further increase the pedal stroke. However, according to Figure 1 It can be seen that in the process of reaching the separation point after the maximum pedal force, the pedal force corresponding to the clutch pedal is a process of gradually decreasing. If too much force is applied to the clutch pedal during this process, then after the clutch pedal is pressed to the bottom, the excessive force will cause the clutch pedal to deform, that is, Figure 1 The middle pedal stroke exceeds L3 and the pedal force rises sharply in the curve section. The deformation of the clutch pedal due to excessive force will reduce the life of the clutch pedal and affect the safety of vehicle driving.

[0043] At the same time, when the clutch pedal is lifted, a maintaining force N5 needs to be applied to the clutch pedal first, so that the clutch pedal will not be lifted quickly, and the vehicle will not be stalled due to the clutch pedal being lifted quickly. In the process of slowly controlling the clutch pedal to be lifted, the meshing point E is reached, so that the engine and the gearbox are meshed, and then the engine provides power to the gearbox, and the vehicle starts to move; after the engine and the gearbox are fully engaged, the clutch pedal is quickly lifted again to allow the vehicle to drive normally. In other words, in the process of the clutch pedal being lifted, it can be roughly divided into three different control stages, and in the three different control stages, the clutch pedal needs to be controlled with different forces and speeds to maintain a smooth start of the vehicle. This requires the operator to have sufficient driving experience to correctly control the clutch pedal in the three different control stages to achieve a smooth start and shifting of the vehicle.

[0044] In the related technology, when controlling the clutch pedal, the user is required to have relatively rich driving experience and understand the saddle line characteristics of the pedal force first increasing and then decreasing during the entire pedal stroke, so that the user can use appropriate force and speed to control the clutch pedal for smooth starting and shifting. If the user has less driving experience, then during the process of pressing down and lifting the clutch pedal, the gear shift may not be able to be changed because the pedal stroke has not reached the separation point, affecting the normal driving of the vehicle, or the clutch pedal may be lifted too quickly, causing the vehicle to stall and produce a certain impact, affecting driving safety and the user's driving experience.

[0045] To this end, the present application provides a clutch pedal control method and device, which responds to the increase of the pedal force on the clutch pedal, and detects whether the pedal stroke reaches the separation point when the pedal force has not reached the maximum pedal force; in response to the pedal stroke reaching the separation point, controls the separation of the engine and the transmission, and sets the position of the separation point before the position where the maximum pedal force appears. The separation point can be reached before the clutch pedal receives the maximum pedal force, so that the engine and the transmission are separated, simplifying the operation process during the clutch pedal depression process, and avoiding applying a greater force to the clutch pedal after the maximum pedal force, thereby avoiding deformation of the clutch pedal due to excessive force, and improving the service life of the clutch pedal and driving safety. After the pedal force reaches the maximum pedal force, in response to the decrease in the pedal force, it is detected whether the pedal stroke reaches the engagement point; in response to the pedal stroke reaching the engagement point, the engine and the gearbox are controlled to engage, and the engagement point can be reached in the process of the pedal force decreasing from the maximum pedal force, and the engine and the gearbox are controlled to engage, which simplifies the operation process when the clutch pedal is lifted, reduces the difficulty of operation during the process of lifting the clutch pedal, reduces the possibility of vehicle stalling and shaking during starting and shifting, achieves smooth starting and shifting of the vehicle, and improves the comfort and safety of vehicle driving.

[0046] See also Figure 2 , Figure 2 A method flow chart of a clutch pedal control method provided in an embodiment of the present application, the method specifically comprises the following steps:

[0047] Step 201 : In response to an increase in the pedal force on the clutch pedal, when the pedal force has not reached the maximum pedal force, detecting whether the pedal stroke of the clutch pedal reaches a release point.

[0048] In the process of controlling the clutch pedal, the pedal force is the force applied to the clutch pedal. Under the control of the pedal force, the clutch pedal is pressed down or lifted up, and the pedal stroke is the position change between the current position and the initial position of the clutch pedal. When the pedal force applied to the clutch pedal gradually increases from zero, the clutch pedal is pressed down under the action of the pedal force, and the pedal stroke also increases. In the vehicle control system, the power transmission between the vehicle engine and the gearbox is controlled by controlling the clutch pedal. When the clutch pedal is pressed down to a certain pedal stroke, the engine and gearbox power are disconnected, and this pedal stroke is set as the separation point corresponding to the clutch pedal.

[0049] In the embodiment of the present application, in order to improve the control experience of the clutch pedal, the separation point is set before the maximum pedal force. When the pedal force gradually increases but has not yet increased to the maximum pedal force, the pedal stroke is detected to determine whether the pedal stroke reaches the separation point. In other words, when the pedal force on the clutch pedal gradually increases from zero, if the pedal force of the clutch pedal increases to the maximum pedal force, then the pedal stroke of the clutch pedal has passed the separation point in this process. At the maximum pedal force, the engine and the gearbox have been separated, and the gear shifting operation can be performed normally. In this way, when controlling the clutch pedal, there is no need to apply more force to the clutch pedal after the clutch pedal is subjected to the maximum pedal force, so as to avoid deformation of the clutch pedal due to excessive pedal force.

[0050] Specifically, in the process that both the pedal force and the pedal stroke increase, when the pedal stroke reaches the maximum pedal stroke, the pedal force reaches the maximum pedal force.

[0051] In the process of controlling the clutch pedal to be pressed down, when the clutch pedal reaches the maximum pedal stroke, the pedal force corresponding to the clutch pedal also reaches the maximum pedal force. In this way, in the process of controlling the clutch pedal to be pressed down, the pedal force gradually increases with the increase of the pedal stroke, that is, there is a positive correlation between the pedal force and the pedal stroke. Such a setting can make the force trend of the clutch pedal in the process of being pressed down the same. It is only necessary to gradually increase the pedal force to the maximum pedal force and directly press the clutch pedal down to the maximum pedal stroke to separate the engine and the gearbox, thereby reducing the difficulty of operating the clutch pedal.

[0052] At the same time, the pedal force at the maximum pedal stroke is the maximum pedal force. At the maximum pedal force, the pedal stroke has passed the separation point. The clutch pedal will not continue to be pressed down at the maximum pedal stroke, thereby avoiding the pedal stroke exceeding the maximum pedal stroke and causing deformation of the clutch pedal.

[0053] Step 202: In response to the pedal stroke reaching the separation point, controlling the engine and the transmission to separate.

[0054] In the process of gradually increasing the pedal force on the clutch pedal, if it is detected that the pedal stroke has reached the separation point, the engine and the gearbox are controlled to separate, cutting off the power input from the engine to the gearbox, so that the power between the engine and the gearbox is disconnected, so as to switch gears while the vehicle is driving.

[0055] Step 203: After the pedal force reaches the maximum pedal force, in response to a decrease in the pedal force, detecting whether the pedal stroke reaches an engagement point.

[0056] After the pedal force reaches the maximum pedal force, since the pedal stroke has reached the separation point, the gear shifting and other operations during vehicle driving can be completed normally. In order to reconnect the engine and gearbox and control the vehicle speed, it is necessary to reduce the pedal force on the clutch pedal so that the clutch pedal can be lifted.

[0057] Since during the clutch pedal lifting process, if the pedal stroke decreases rapidly, the engine will be stalled. When the vehicle is driving at a certain speed, the engine stalling will also bring a certain impact force to the vehicle and the passengers on the vehicle, affecting driving safety and driving experience, so it is necessary to use a maintenance force to control the clutch pedal to gradually lift. At the same time, since there is energy loss in the process of controlling the clutch pedal, and the process of pressing the clutch pedal is to apply force to the clutch pedal to press it down, and the process of lifting the clutch pedal is to apply force to the clutch pedal to suppress its rapid lifting, the pedal force of the clutch pedal during the lifting process will be less than the pedal force during the clutch pressing process. At the maximum pedal force, when the pedal force for the clutch pedal begins to decrease, it is considered that the clutch pedal begins to gradually lift, and the corresponding pedal stroke gradually decreases. By responding to the decrease in pedal force, it is started to detect whether the pedal stroke reaches the engagement point. In the process of clutch pedal lifting, the process of pedal force first increasing and then decreasing in the related art is simplified to the process of pedal force gradually decreasing. In this way, in the process of controlling the clutch pedal to lift, there is no need to divide it into multiple stages to control the clutch pedal according to different forces and different speeds, which simplifies the operation process for the clutch pedal and reduces the difficulty of operation.

[0058] In a possible implementation, step 203 may also be implemented in the following manner:

[0059] Step 11: After the pedal force reaches the maximum pedal force, in response to the pedal stroke decreasing from the maximum pedal stroke, the pedal force decreases;

[0060] Step 12: During the process of reducing the pedal force, detecting whether the pedal stroke reaches the engagement point.

[0061] After the pedal force on the clutch pedal reaches the maximum pedal force, the pedal stroke of the clutch pedal also reaches the maximum pedal stroke. At this time, if the clutch pedal is to be lifted, the pedal stroke of the clutch pedal begins to decrease from the maximum pedal stroke, and correspondingly, the pedal force of the clutch pedal also begins to decrease from the maximum pedal force. When the clutch pedal is lifted, the engine and the gearbox are reconnected by controlling the pedal stroke. Therefore, in the process of the pedal force gradually decreasing from the maximum pedal force, the pedal stroke corresponding to the clutch pedal is detected, and the pedal stroke is used to determine whether the engagement point that enables the engine and the gearbox to engage is reached.

[0062] By setting the corresponding changes between pedal stroke and pedal force, that is, the pedal stroke increases accordingly when the pedal force increases, and the pedal stroke decreases accordingly when the pedal force decreases, the control process of the clutch pedal is simplified and the operating experience of the clutch pedal is improved.

[0063] In a possible implementation, in order to make the vehicle start, shift and other processes more stable, the engagement point can be set at the maximum pedal stroke. In this case, step 203 can be implemented as follows:

[0064] After the pedal force reaches the maximum pedal force, in response to a decrease in the pedal force, it is determined that the pedal stroke reaches the engagement point.

[0065] During the clutch pedal depression process, the pedal force and pedal stroke both gradually increase, and at the maximum pedal stroke, the pedal force reaches the maximum pedal force; at this time, if the pedal force on the clutch pedal begins to decrease, due to the different forces during the clutch pedal depression and lifting process, the pedal force during the clutch pedal lifting process is less than the pedal force during the clutch pedal depression process, so at the maximum pedal stroke, when the pedal force reaches the maximum pedal force and begins to decrease, the pedal stroke may not have changed. For example, during the clutch pedal depression process, the pedal force applied to the clutch pedal must be greater than the force of the clutch pedal spring, and during the clutch pedal lifting process, the pedal force applied to the clutch pedal only needs to be less than or equal to the force of the clutch pedal spring. Then at the maximum pedal stroke, the clutch pedal stroke does not change during the process of the pedal force decreasing from greater than the force of the clutch pedal spring to equal to the force of the clutch pedal spring. In the case where the engagement point is set at the maximum pedal stroke, in response to the decrease in the pedal force, it is determined that the clutch pedal enters the lifting process, and at the same time, it is determined that the pedal stroke reaches the engagement point.

[0066] See also Figure 3 As shown, Figure 3 A clutch pedal force characteristic curve diagram provided in another embodiment of the present application, Figure 3 In the figure, the horizontal axis is the pedal stroke and the vertical axis is the pedal force. During the clutch pedal depression process, the clutch pedal passes through the separation point D and the point M corresponding to the maximum pedal force in sequence, and the separation point D is set before the point M corresponding to the maximum pedal force. At the same time, the point M corresponds to the maximum pedal stroke on the horizontal axis. During the clutch pedal lifting process, the clutch pedal passes through the meshing point E and the synchronization point S in sequence, and the meshing point E is set at the maximum pedal stroke, and the synchronization point S is set after the meshing point E. In this way, at the maximum pedal stroke, when the pedal force on the clutch pedal decreases, it is determined that the pedal stroke reaches the meshing point E.

[0067] By setting the engagement point at the maximum pedal travel, the idle travel of the clutch pedal during lifting is reduced, realizing the "engagement as foot lifts" control process, improving vehicle control efficiency, and enhancing the control experience of the clutch pedal and vehicle driving experience.

[0068] Step 204: In response to the pedal stroke reaching the engagement point, controlling the engine to engage with the transmission.

[0069] The engagement point is the pedal travel corresponding to the time when the engine and the gearbox are reconnected when the clutch pedal is lifted. After the vehicle shifts gears, the engine and the gearbox need to be re-engaged to connect the power input from the engine to the gearbox in order to control the vehicle's speed and keep the vehicle running normally.

[0070] Specifically, during the clutch pedal lifting process, step 204 can be implemented in the following manner:

[0071] Step 21: In response to the pedal stroke reaching the engagement point, controlling the engine to start engaging with the gearbox;

[0072] Step 22: In response to the pedal stroke reaching a synchronization point, controlling the engine to fully engage with the gearbox.

[0073] During the process of lifting the clutch pedal, the points related to the engagement process of the engine and the gearbox include the engagement point and the synchronization point. When the pedal stroke reaches the engagement point, the engine and the gearbox are controlled to start engaging, and the vehicle starts to creep start. After passing the engagement point, when the pedal stroke reaches the synchronization point, the engine and the gearbox are controlled to be fully fitted, and the engine provides power to the gearbox to control the vehicle's driving speed.

[0074] See also Figure 4 , Figure 4 A comparison diagram of the clutch pedal force characteristic curve provided in the embodiment of the present application. The solid line portion is the force characteristic curve corresponding to the clutch pedal control method in the related art, and the dotted line portion is the force characteristic curve corresponding to the clutch pedal control method provided in the present application. Figure 4In the figure, M1 is the point corresponding to the maximum pedal force in the force characteristic curve corresponding to the related art, M2 is the point corresponding to the maximum pedal force in the force characteristic curve corresponding to the present application, D is the separation point corresponding to both force characteristic curves, and E is the meshing point corresponding to both force characteristic curves. It can be seen that compared with the force characteristic curve corresponding to the related art, in the force characteristic curve corresponding to the present application, the change of pedal force is positively correlated with the change of pedal stroke in the process of gradually increasing pedal stroke of the clutch pedal, that is, the pedal force increases with the increase of pedal stroke, and before reaching the maximum pedal stroke, the pedal force has passed the separation point; at the same time, in the process of gradually decreasing pedal stroke from the maximum pedal stroke, the pedal force also decreases with the decrease of pedal stroke. Whether the clutch pedal is pressed down or lifted up, the change between pedal stroke and pedal force is positively correlated. Compared with the related art, the clutch pedal control method provided in the present application is simpler for the operation process of the clutch pedal.

[0075] In one possible implementation, when the pedal stroke increases but does not reach the maximum pedal stroke, there is a first linear relationship between the pedal stroke and the pedal force; when the pedal stroke decreases from the maximum pedal stroke, there is a second linear relationship between the pedal stroke and the pedal force.

[0076] In the embodiment of the present application, the changing relationship between the pedal stroke and the pedal force can be set as a linear relationship, that is, the relationship between the pedal stroke and the pedal force can be roughly fitted into a straight line in the two-dimensional coordinate system. Since the forces are not the same during the clutch pedal is pressed down and lifted, the pedal stroke and the pedal force present a first linear relationship in the process of increasing but not reaching the maximum pedal stroke, that is, during the clutch pedal is pressed down, and the pedal stroke and the pedal force present a second linear relationship in the process of decreasing from the maximum pedal stroke, that is, during the clutch pedal is lifted. It should be noted that in the embodiment of the present application, the first linear relationship is not the same as the second linear relationship.

[0077] By setting the changing relationship between pedal stroke and pedal force to a linear relationship during the process of pressing and lifting the clutch pedal, the change process of pedal force during clutch pedal control can be made more uniform, providing a more comfortable operating experience.

[0078] In addition, in the embodiment of the present application, the setting of the separation point, the meshing point, etc. in the pedal stroke can be achieved by testing the pedal stroke of the clutch pedal and adjusting the stiffness of the clutch pedal according to the pedal stroke, or by testing the pedal force of the clutch pedal and adjusting the clutch pedal stroke according to the pedal force. The stiffness adjustment of the clutch pedal can be achieved by selecting a suitable clutch spring.

[0079] As an example, during the clutch pedal depression process, the separation point can be set at 80% to 100% of the maximum pedal stroke, and during the clutch pedal lifting process, the maximum pedal stroke is used as the starting point, the engagement point can be set at 0% to 30% of the maximum pedal stroke, and the synchronization point can be set at 20% to 60% of the maximum pedal stroke. It should be noted that in the embodiment of the present application, the maximum pedal stroke is used as the initial position, and the distance between the synchronization point and the maximum pedal stroke is greater than the distance between the engagement point and the maximum pedal stroke.

[0080] A clutch pedal control method provided by the present application detects whether the pedal stroke reaches the separation point in response to the increase of the pedal force on the clutch pedal when the pedal force has not reached the maximum pedal force; controls the engine and the gearbox to separate in response to the pedal stroke reaching the separation point, sets the separation point before the position of the maximum pedal force, and reaches the separation point before the clutch pedal receives the maximum pedal force, so that the engine and the gearbox are separated, simplifying the operation process during the clutch pedal depression process, and avoiding applying a greater force to the clutch pedal after the maximum pedal force, thereby avoiding deformation of the clutch pedal due to excessive force, and improving the service life and driving safety of the clutch pedal. After the pedal force reaches the maximum pedal force, detect whether the pedal stroke reaches the meshing point in response to the decrease of the pedal force; controls the engine and the gearbox to mesh in response to the pedal stroke reaching the meshing point, and reaches the meshing point in the process of the pedal force decreasing from the maximum pedal force, controls the engine and the gearbox to mesh, simplifies the operation process when the clutch pedal is lifted, reduces the difficulty of operation during the clutch pedal lifting process, reduces the possibility of the vehicle stalling and shaking during the starting and shifting process, realizes the smooth starting and shifting of the vehicle, and improves the comfort and safety of vehicle driving.

[0081] It should be understood that the various steps described in the method implementation of the present application can be performed in different orders and / or performed in parallel. In addition, the method implementation may include additional steps and / or omit the steps shown. The scope of the present application is not limited in this respect.

[0082] Although operations are depicted in a particular order, this should not be understood as requiring that the operations be performed in the particular order shown or in a sequential order.Multitasking and parallel processing may be advantageous under certain circumstances.

[0083] See also Figure 5 , Figure 5A clutch pedal control device is provided in an embodiment of the present application, and the device specifically includes: a first detection unit 501, a first control unit 502, a second detection unit 503 and a second control unit 504.

[0084] A first detection unit 501 is used for: in response to an increase in the pedal force on the clutch pedal, when the pedal force has not reached the maximum pedal force, detecting whether the pedal stroke of the clutch pedal reaches a release point;

[0085] The first control unit 502 is used to: in response to the pedal stroke reaching the separation point, control the engine and the transmission to separate;

[0086] A second detection unit 503 is used to: after the pedal force reaches the maximum pedal force, in response to the decrease of the pedal force, detect whether the pedal stroke reaches the engagement point;

[0087] The second control unit 504 is used to control the engine to engage with the gearbox in response to the pedal stroke reaching the engagement point.

[0088] Optionally, in the process where both the pedal force and the pedal stroke increase, when the pedal stroke reaches the maximum pedal stroke, the pedal force reaches the maximum pedal force.

[0089] Optionally, the engagement point is arranged at the maximum pedal travel;

[0090] The second detection unit 503 is specifically used for:

[0091] After the pedal force reaches the maximum pedal force, in response to a decrease in the pedal force, it is determined that the pedal stroke reaches the engagement point.

[0092] Optionally, the second detection unit 503 is specifically configured to:

[0093] After the pedal force reaches the maximum pedal force, in response to the pedal stroke decreasing from the maximum pedal stroke, the pedal force decreases;

[0094] During the process of reducing the pedal force, it is detected whether the pedal stroke reaches the engagement point.

[0095] Optionally, the second control unit 504 is specifically configured to:

[0096] In response to the pedal stroke reaching the engagement point, controlling the engine to start engaging with the transmission;

[0097] In response to the pedal stroke reaching a synchronization point, the engine is controlled to fully engage with the gearbox.

[0098] Optionally, when the pedal stroke increases but does not reach the maximum pedal stroke, there is a first linear relationship between the pedal stroke and the pedal force; when the pedal stroke decreases from the maximum pedal stroke, there is a second linear relationship between the pedal stroke and the pedal force.

[0099] The names of the messages or information exchanged between multiple devices in the embodiments of the present application are only used for illustrative purposes and are not used to limit the scope of these messages or information.

[0100] Computer program code for performing the operations of the present application may be written in one or more programming languages ​​or a combination thereof, including, but not limited to, object-oriented programming languages, such as Java, Smalltalk, C++, and conventional procedural programming languages, such as "C" or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving a remote computer, the remote computer may be connected to the user's computer via any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0101] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the above-described devices and units can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here.

[0102] In the several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0103] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0104] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0105] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), disk or optical disk and other media that can store computer programs.

[0106] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A clutch pedal control method, It is characterized in that The method comprises: In response to an increase in a pedal force on a clutch pedal, when the pedal force has not reached a maximum pedal force, detecting whether a pedal stroke of the clutch pedal reaches a release point; In response to the pedal stroke reaching the separation point, controlling the engine and the transmission to separate; After the pedal force reaches the maximum pedal force, in response to a decrease in the pedal force, detecting whether the pedal stroke reaches an engagement point; In response to the pedal travel reaching the engagement point, the engine is controlled to engage with the transmission.

2. The method according to claim 1, It is characterized in that In the process that both the pedal force and the pedal stroke increase, when the pedal stroke reaches a maximum pedal stroke, the pedal force reaches the maximum pedal force.

3. The method according to claim 2, It is characterized in that The engagement point is arranged at the maximum pedal travel; After the pedal force reaches the maximum pedal force, in response to a decrease in the pedal force, detecting whether the pedal stroke reaches the engagement point comprises: After the pedal force reaches the maximum pedal force, in response to a decrease in the pedal force, it is determined that the pedal stroke reaches the engagement point.

4. The method according to claim 2, It is characterized in that After the pedal force reaches the maximum pedal force, in response to a decrease in the pedal force, detecting whether the pedal stroke reaches the engagement point comprises: After the pedal force reaches the maximum pedal force, in response to the pedal stroke decreasing from the maximum pedal stroke, the pedal force decreases; During the process of reducing the pedal force, it is detected whether the pedal stroke reaches the engagement point.

5. The method according to claim 2, It is characterized in that In response to the pedal stroke reaching the engagement point, controlling the engine to engage with the transmission comprises: In response to the pedal stroke reaching the engagement point, controlling the engine to start engaging with the transmission; In response to the pedal stroke reaching a synchronization point, the engine is controlled to fully engage with the gearbox.

6. The method according to any one of claims 1 to 5, It is characterized in that When the pedal stroke increases but does not reach the maximum pedal stroke, there is a first linear relationship between the pedal stroke and the pedal force; when the pedal stroke decreases from the maximum pedal stroke, there is a second linear relationship between the pedal stroke and the pedal force.

7. A clutch pedal control device, It is characterized in that The device comprises: a first detection unit, configured to: in response to an increase in a pedal force on a clutch pedal, when the pedal force has not reached a maximum pedal force, detect whether a pedal stroke of the clutch pedal reaches a release point; A first control unit, configured to: in response to the pedal stroke reaching the separation point, control the engine and the transmission to separate; a second detection unit, configured to detect whether the pedal stroke reaches an engagement point in response to a decrease in the pedal force after the pedal force reaches the maximum pedal force; The second control unit is used for controlling the engine to engage with the gearbox in response to the pedal stroke reaching the engagement point.

8. The device according to claim 7, It is characterized in that In the process that both the pedal force and the pedal stroke increase, when the pedal stroke reaches a maximum pedal stroke, the pedal force reaches the maximum pedal force.

9. The device according to claim 8, It is characterized in that The engagement point is arranged at the maximum pedal travel; The second detection unit is specifically used for: After the pedal force reaches the maximum pedal force, in response to a decrease in the pedal force, it is determined that the pedal stroke reaches the engagement point.

10. The device according to claim 8, It is characterized in that The second detection unit is specifically used for: After the pedal force reaches the maximum pedal force, in response to the pedal stroke decreasing from the maximum pedal stroke, the pedal force decreases; During the process of reducing the pedal force, it is detected whether the pedal stroke reaches the engagement point.

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