Control method, control device, and saddle-type vehicle

Abstract

To provide a technique that suitably execute coasting in a saddle-riding type vehicle.SOLUTION: A method for controlling coasting in a saddle-riding type vehicle includes: a first detection process in which disengagement state of a clutch of a saddle-riding type vehicle is detected; a second detection process in which a throttle opening of the saddle-riding type vehicle is detected; a third process in which a bank angle of the saddle-riding type vehicle is detected; and a control process in which coasting for stopping an engine of the saddle-riding type vehicle is controlled. In the control process, when disconnection of the clutch is detected in the first detection process, it is detected that the throttle opening is less than a prescribed opening in the second detection process, and it is detected that the bank angle is less than a threshold in the third process, the coasting is started.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a control method and device for controlling the coasting of a saddle-ride type vehicle, and a saddle-ride type vehicle equipped with the same. [Background technology]

[0002] Patent Document 1 proposes a technology that determines whether the movement of the vehicle in the width direction while coasting is due to wobbling while driving straight or due to cornering, and ends coasting if it is determined that the movement of the vehicle is due to cornering. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-3979 Summary of the Invention [Problem to be solved by the invention]

[0004] It is desirable to apply coasting (also called inertial running) as described in Patent Document 1 not only to four-wheeled vehicles but also to saddle-type vehicles such as motorcycles. By applying coasting to a saddle-type vehicle, the fuel efficiency of the saddle-type vehicle can be improved. However, in a saddle-type vehicle, if coasting begins while the vehicle is banking, the stability of the vehicle may decrease.

[0005] Therefore, an object of the present invention is to provide a technique that enables appropriate coasting to be performed in a saddle-type vehicle. [Means for solving the problem]

[0006] In order to achieve the above object, a control method as one aspect of the present invention is a control method for controlling coasting of a saddle-riding type vehicle, comprising a first detection step of detecting a disengaged state of a clutch of the saddle-riding type vehicle, a second detection step of detecting a throttle opening degree of the saddle-riding type vehicle, a third detection step of detecting a bank angle of the saddle-riding type vehicle, and a control step of controlling the coasting to stop an engine of the saddle-riding type vehicle, characterized in that in the control step, the coasting is started when the first detection step detects that the clutch is disengaged, the second detection step detects that the throttle opening degree is less than a predetermined opening degree, and the third detection step detects that the bank angle is less than a threshold value. Effect of the Invention

[0007] According to the present invention, for example, a technique can be provided that enables appropriate coasting to be performed in a saddle-type vehicle. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is an external view showing an example of a saddle-type vehicle. [Diagram 2] A block diagram showing an example of the configuration of a control device. [Diagram 3] Flowchart showing coasting control of a saddle-type vehicle [Figure 4] Flowchart showing coasting control of a saddle-type vehicle [Diagram 5] FIG. 13 is a diagram showing an example of a relationship between vehicle speed and a threshold value of a bank angle; [Figure 6] Diagram to explain transition time [Figure 7] FIG. 1 is a diagram showing an example of the relationship between the bank angle and the engine speed. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The present invention is not limited to the following embodiment, and includes changes and modifications of the configuration within the scope of the present invention. Furthermore, not all of the combinations of features described in the present embodiment are necessarily essential to the present invention. Note that the same components are given the same reference numbers and their description will be omitted.

[0010] A control device 100 according to an embodiment of the present invention will be described. The control device 100 is a device that controls coasting of a saddle-riding type vehicle 10. Coasting refers to coasting in which the power transmission from a drive source (engine) to drive wheels (wheels) is interrupted by a clutch. In this embodiment, coasting is performed by stopping the engine, which is the drive source. That is, coasting in this embodiment involves stopping the engine. Examples of the saddle-riding type vehicle 10 include motorcycles and three-wheeled vehicles. In this embodiment, a motorcycle will be described as an example of the saddle-riding type vehicle 10.

[0011] FIG 1 is an external view (left side view) showing an example of a saddle-ride type vehicle 10 to which a control device 100 of this embodiment is applied (mounted). As shown in FIG 1, the saddle-ride type vehicle 10 includes an engine 11 and a transmission 12. The output of the engine 11 is transmitted to the transmission 12 via a clutch (not shown). The transmission 12 is a manual transmission having a plurality of speed stages (gear stages) with different gear ratios. In this embodiment, an example will be described in which the transmission 12 has 1st to 5th speed stages, but the present invention is not limited to this, and the transmission 12 may have any number of speed stages.

[0012] A clutch lever 14 for the driver (rider) to disengage the clutch (clutch operation) is provided near the left handle grip 13 of the saddle riding type vehicle 10. A shift pedal 15 for the driver to change gears in the transmission 12 is provided on the left side surface of the saddle riding type vehicle 10. When the driver operates the clutch lever 14 and the shift pedal 15, a shifter (not shown) operates accordingly, and the gear stage of the transmission 12 is changed (switched).

[0013] The right handle grip 16 of the saddle riding type vehicle 10 is configured to be rotatable so that the driver can operate the accelerator. That is, the handle grip 16 is configured as a throttle operation unit for adjusting the throttle opening in response to the rotation operation by the driver to control the output of the engine 11. In addition, a brake lever 17 for controlling the brakes of the saddle riding type vehicle 10 is provided near the handle grip 16.

[0014] 2 is a block diagram showing an example of the configuration of the control device 100 of this embodiment. The control device 100 is a device that controls the coasting of the saddle riding type vehicle 10 by controlling the engine 11, and in this embodiment, may include a control unit 110, various sensors 120, and a notification unit 130. The control unit 110 may be configured as a part of an ECU (Electronic Control Unit) provided in the saddle riding type vehicle 10.

[0015] The control unit 110 may include a processing unit 111, a storage unit 112, and an interface unit 113. The processing unit 111 is configured with a CPU (Central Processing Unit) and the like, and controls the coasting of the saddle riding type vehicle 10 based on the detection results of the various sensors 120. The storage unit 112 is configured with a RAM (Random Access Memory), a ROM (Read Only Memory), and the like, and stores a program for controlling the coasting of the saddle riding type vehicle 10. The program stored in the storage unit 112 may be read and executed by the processing unit 111. The interface unit 113 transmits and receives information and data to and from external devices such as the various sensors 120.

[0016] The various sensors 120 may include a clutch detection sensor 121, a throttle detection sensor 122, a rotation speed difference detection sensor 123, a gear stage detection sensor 124, a bank angle detection sensor 125, an engine rotation speed sensor 126, and a vehicle speed sensor 127. Information indicating the detection results of the various sensors 120 may be supplied (transmitted) to the control unit 110. That is, the information indicating the detection results of the various sensors 120 may be supplied (transmitted) to the processing unit 111 via the interface unit 113.

[0017] The clutch detection sensor 121 (first detection unit) detects the disengaged state of the clutch of the saddle riding type vehicle 10. The clutch detection sensor 121 may be understood as detecting whether or not the clutch of the saddle riding type vehicle 10 is in a disengaged state based on the amount of operation of the clutch lever 14 by the driver. Furthermore, the throttle detection sensor 122 (second detection unit) detects the throttle opening degree of the saddle riding type vehicle 10. The throttle detection sensor 122 may be understood as detecting the throttle opening degree based on the amount of operation (amount of rotation) of the handle grip 16 by the driver.

[0018] The rotation speed difference detection sensor 123 (third detection unit) detects the difference in rotation speed between the drive side and the driven side of the clutch of the saddle riding type vehicle 10. That is, the rotation speed difference detection sensor 123 detects the difference between the rotation speed of the drive shaft and the rotation speed of the driven shaft of the clutch of the saddle riding type vehicle 10 as the rotation speed difference. The gear stage detection sensor 124 detects the gear stage selected by the driver (i.e., the current gear stage) among multiple gear stages in the transmission 12 of the saddle riding type vehicle 10. The bank angle detection sensor 125 is composed of, for example, a gyro sensor, and detects the bank angle of the saddle riding type vehicle 10. The engine rotation speed sensor 126 detects the rotation speed of the engine 11 of the saddle riding type vehicle 10. Furthermore, the vehicle speed sensor 127 detects the speed (vehicle speed) of the saddle riding type vehicle 10.

[0019] The notification unit 130 (notification unit) notifies (notifies) the driver of various information. The notification unit 130 may notify the driver of various information by displaying the various information on a display device (display) provided in the saddle riding type vehicle 10, or may notify the driver of various information by transmitting the various information to an information terminal owned by the driver. In the present embodiment, the notification unit 130 can be used to notify whether or not coasting is being performed. For example, the notification unit 130 notifies the driver of the start and / or end of coasting.

[0020] In recent years, it is desired to apply coasting to the saddle riding type vehicle 10 from the viewpoint of improving the fuel efficiency of the saddle riding type vehicle 10. However, if coasting is started while the saddle riding type vehicle 10 is banking, the stability of the vehicle may decrease. Therefore, the control device 100 (control unit 110) of this embodiment starts coasting when the clutch detection sensor 121 detects that the clutch is disengaged, the throttle detection sensor 122 detects that the throttle opening is less than a predetermined opening, and the bank angle detection sensor 125 detects that the bank angle of the saddle riding type vehicle 10 is less than a threshold. That is, as a condition for starting coasting, in addition to detecting the clutch disengagement and the throttle opening less than the predetermined opening, detection of a bank angle less than a threshold is set. This makes it possible to prevent the stability of the vehicle from decreasing due to the start of coasting while the saddle riding type vehicle 10 is banking. That is, coasting can be appropriately performed in the saddle riding type vehicle 10.

[0021] An example of coasting control of the saddle riding type vehicle 10 will be described below with reference to Fig. 3 to Fig. 4. Fig. 3 to Fig. 4 are flowcharts showing coasting control of the saddle riding type vehicle 10. The flowcharts of Fig. 3 to Fig. 4 can be executed by the control unit 110 (processing unit 111).

[0022] In step S101, the control unit 110 determines whether or not the clutch is disengaged by the clutch detection sensor 121. If the clutch is not disengaged, step S101 is repeated, and if the clutch is disengaged, the process proceeds to step S102. In step S102, the control unit 110 determines whether or not the throttle detection sensor 122 detects that the throttle opening is less than a predetermined throttle opening. If the throttle opening is equal to or greater than the predetermined throttle opening, the process returns to step S101, and if the throttle opening is less than the predetermined throttle opening, the process proceeds to step S103. Here, the predetermined throttle opening is a value (threshold) for determining that the throttle is closed, and can be set to, for example, zero or a value close to zero.

[0023] In step S103, the control unit 110 determines whether or not the bank angle of the saddle riding type vehicle 10 is less than the threshold value TH based on the detection result of the bank angle detection sensor 125. The bank angle threshold value TH can be set in advance using experiments, simulations, etc. to a value that makes it difficult for the behavior of the saddle riding type vehicle 10 to become unstable even when coasting is performed (started) (i.e., a value that makes it easy to ensure the stability of the saddle riding type vehicle 10). If the bank angle is equal to or greater than the threshold value, the process returns to step S101, and if the bank angle is less than the threshold value TH, the process proceeds to S104.

[0024] Here, when the speed (vehicle speed) of the saddle riding type vehicle 10 is low, even if coasting is executed (started), the effect of coasting on the behavior of the vehicle is small. Therefore, the control unit 110 may change the bank angle threshold value TH according to the speed of the saddle riding type vehicle 10 detected by the vehicle speed sensor 127. For example, as shown in Fig. 5, the control unit 110 may change the bank angle threshold value TH according to the speed of the saddle riding type vehicle 10 so that the bank angle threshold value TH becomes smaller as the speed of the saddle riding type vehicle 10 is higher within a predetermined speed range on the low speed side. This makes it easier to execute (start) coasting when the speed of the saddle riding type vehicle 10 is low.

[0025] In step S104, the control unit 110 starts coasting of the saddle riding type vehicle 10. The control unit 110 stops the engine 11 and starts coasting of the saddle riding type vehicle 10 at the timing when the clutch detection sensor 121 detects that the clutch has been disengaged, the throttle detection sensor 122 detects that the throttle opening is less than a predetermined opening, and the bank angle detection sensor 125 detects that the bank angle is less than a threshold value TH.

[0026] In step S105, the control unit 110 controls the coasting of the saddle riding type vehicle 10. Details of the coasting control in step S105 are shown in Fig. 4. Hereinafter, the coasting control in step S105 will be described with reference to Fig. 4.

[0027] In step S111, the control unit 110 judges whether or not the bank angle detected by the bank angle detection sensor 125 is equal to or greater than the threshold value TH. If it is judged that the bank angle is equal to or greater than the threshold value TH, the control unit 110 executes processes (S112 to S116) for ending coasting, and then proceeds to step S106 in Fig. 3, where coasting is ended. The processes (S112 to S116) can be performed in order to reduce instability in the behavior of the vehicle that occurs when coasting is ended and the vehicle is returned to normal driving.

[0028] In step S112, the control unit 110 determines the transition time of the clutch connection. The transition time is the time taken to transition the clutch from a disengaged state to an engaged state, as shown in FIG. 6(a), and may be understood as the time required to engage the clutch. The transition of the clutch state from the disengaged state to the engaged state may be performed after timing t1 when the engine 11 is started and before timing t2 when coasting is ended. In addition, the longer the transition time, the more the shock occurring when the clutch is engaged can be reduced, so that the greater the bank angle, the greater the instability of the vehicle's behavior can be reduced by making the transition time longer. In this embodiment, the control unit 110 may determine the transition time according to the bank angle, so that the greater the bank angle, the longer the transition time.

[0029] In step S113, the control unit 110 determines a target rotation speed of the engine 11 after starting the engine 11 while coasting is being performed. The control unit 110 determines a target rotation speed of the engine 11 that allows the rotation speed difference of the clutch to fall within an allowable range, based on the gear stage of the transmission 12 detected by the gear stage detection sensor 124 and the speed (vehicle speed) of the saddle riding type vehicle 10 detected by the vehicle speed sensor 127. The rotation speed difference of the clutch refers to the rotation speed difference between the drive side (drive shaft) and the driven side (driven shaft) of the clutch in a disengaged state.

[0030] For example, if the gear stage of the transmission 12 and the vehicle speed are known, the rotation speed of the driven side (driven shaft) of the clutch can be obtained. As an example, the control unit 110 can obtain the rotation speed of the driven side of the clutch by a calculation formula using the gear ratio of the gear stage of the transmission 12 and the vehicle speed as variables. Then, if the rotation speed of the driven side of the clutch is obtained, the control unit 110 can obtain the rotation speed of the driving side so that the difference between the rotation speed of the driven side of the clutch and the rotation speed of the driving side (drive shaft) falls within an allowable range, and determine (calculate) a target rotation speed of the engine 11 for realizing the obtained rotation speed of the driving side. Here, the allowable range can be set in advance to a range of the clutch rotation speed difference that can make the impact generated when the clutch is engaged less than a specified value using experiments, simulations, etc.

[0031] The control unit 110 may also change (increase or decrease) the target rotation speed of the engine 11 according to the bank angle detected by the bank angle detection sensor 125. For example, when the clutch is engaged in a state where the bank angle of the saddle riding type vehicle 10 is large, the behavior of the saddle riding type vehicle 10 is more likely to become unstable than in a state where the bank angle is small. Therefore, it is preferable to improve the stability of the behavior of the saddle riding type vehicle 10 when the clutch is engaged by controlling the rotation speed of the engine 11 so that the rotation speed difference between the driving side and the driven side of the clutch is reduced in accordance with the bank angle of the saddle riding type vehicle 10. In the case of this embodiment, as shown in FIG. 7, during coasting, the control unit 110 changes the rotation speed of the engine 11 according to the bank angle so that the rotation speed difference of the clutch is reduced as the bank angle of the saddle riding type vehicle 10 is larger. This makes it possible to suppress a decrease in the stability of the vehicle when the clutch is engaged, even if the bank angle increases and reaches the bank angle threshold value TH.

[0032] In step S114, the control unit 110 starts the engine 11. Next, in step S115, the control unit 110 controls the rotation speed of the engine 11 based on the target rotation speed determined in step S113. Specifically, the control unit 110 controls the rotation speed of the engine 11 so that the rotation speed of the engine 11 becomes the target rotation speed. In the case of this embodiment, when the engine 11 is started while coasting is being performed, the rotation speed of the engine 11 is controlled so that the rotation speed difference of the clutch falls within an allowable range.

[0033] In step S116, the control unit 110 engages the clutch. In this embodiment, by performing the above steps S112 to S115, it is possible to reduce the impact (shock) that occurs when the clutch is engaged in step S116, and therefore it is possible to reduce instability in the behavior of the vehicle. After step S116 is completed, the process proceeds to step S106 in FIG. 3, where the control unit 110 ends coasting.

[0034] Also, if it is determined in step S111 that the bank angle is less than the threshold value TH, the process proceeds to step S117. In step S117, the control unit 110 determines whether or not a termination condition for terminating coasting is satisfied. The termination condition may be a condition in which the clutch detection sensor 121 detects that the clutch is engaged, or a condition in which the throttle detection sensor 122 detects that the throttle opening is equal to or greater than a predetermined opening. If the termination condition is not satisfied, the process returns to step S111. On the other hand, if the termination condition is satisfied, the process proceeds to step S106 in FIG. 3, where the control unit 110 terminates coasting. The flowcharts in FIGS. 3 and 4 may be repeatedly executed. That is, when the flowchart in FIG. 3 is terminated, the flowchart in FIG. 3 may be started again.

[0035] As described above, the control device 100 of this embodiment starts coasting when the clutch detection sensor 121 detects that the clutch is disengaged, the throttle detection sensor 122 detects that the throttle opening is less than a predetermined opening, and the bank angle detection sensor 125 detects that the bank angle of the saddle riding type vehicle 10 is less than a threshold value. This makes it possible to prevent the start of coasting while the saddle riding type vehicle 10 is banking, thereby preventing the stability of the vehicle from decreasing. In other words, coasting can be appropriately performed in the saddle riding type vehicle 10.

[0036] <Summary of the embodiment> 1. The control method of the above embodiment is A control method for controlling coasting of a saddle-type vehicle (e.g., 10), comprising: A first detection step (e.g., S101) of detecting a disengaged state of the clutch of the saddle riding type vehicle; A second detection step (e.g., S102) of detecting a throttle opening degree of the saddle riding type vehicle; A third detection step (e.g., S103) of detecting a bank angle of the saddle riding type vehicle; A control process (e.g., S104 to S106) for controlling the coasting accompanied by stopping the engine of the saddle riding type vehicle; Including, In the control process, the coasting is started when the first detection process detects that the clutch has been disengaged, the second detection process detects that the throttle opening is less than a predetermined opening, and the third detection process detects that the bank angle is less than a threshold value. According to this embodiment, it is possible to prevent the start of coasting while the saddle riding type vehicle is banking, which would otherwise cause the vehicle stability to decrease. That is, coasting can be appropriately performed in the saddle riding type vehicle. Furthermore, applying coasting to the saddle riding type vehicle is advantageous in terms of improving the fuel efficiency of the saddle riding type vehicle.

[0037] 2. In the above embodiment, In the control step, the threshold value is changed in accordance with a speed of the saddle riding type vehicle. According to this embodiment, it is possible to change the ease with which coasting can be performed (started) in accordance with the speed of the saddle riding type vehicle.

[0038] 3. In the above embodiment, In the control step, the threshold value is changed so that the threshold value becomes smaller as the speed of the saddle riding type vehicle increases within a predetermined speed range. According to this embodiment, coasting can be easily performed (started) in a low speed state where the effect of coasting on the vehicle behavior is relatively small.

[0039] 4. In the above embodiment, In the control process, when the bank angle becomes equal to or greater than the threshold value while the coasting is being performed (eg, S111), the coasting is ended (eg, S106). According to this embodiment, it is possible to prevent the saddle riding type vehicle from banking while coasting, which would otherwise cause the stability of the vehicle to decrease, and thus it is possible to appropriately coast the saddle riding type vehicle.

[0040] 5. In the above embodiment, In the control process, when the coasting is ended, a transition time taken for the clutch to transition from a disengaged state to an engaged state is changed in accordance with the bank angle (eg, S112). According to this embodiment, it is possible to reduce the impact (shock) that occurs when the clutch is engaged, and to reduce instability in the vehicle behavior.

[0041] 6. In the above embodiment, In the control step, the transition time is changed in accordance with the bank angle such that the transition time is longer as the bank angle increases (eg, S112). According to this embodiment, the longer the transition time, the more the impact (shock) that occurs when the clutch is engaged can be reduced, so by making the transition time longer for larger bank angles, the instability of the vehicle's behavior can be reduced.

[0042] 7. In the above embodiment, In the control step, if the bank angle becomes equal to or greater than the threshold value while the coasting is being performed, the engine is started before the coasting is ended (for example, S114). According to this embodiment, coasting can be appropriately terminated.

[0043] 8. In the above embodiment, In the control step, when the engine is started while the coasting is being performed, the engine speed is controlled so that the difference in speed between the driving side and the driven side of the clutch in the disengaged state falls within an allowable range (e.g., S113, S115). According to this embodiment, it is possible to reduce the impact (shock) that occurs when the clutch is engaged.

[0044] 9. In the above embodiment, In the control step, when the engine is started while the coasting is being performed, the engine speed is controlled in accordance with the bank angle (for example, S113, S115). According to this embodiment, the engine speed can be appropriately controlled taking into account the vehicle body posture (bank angle) of the saddle riding type vehicle, thereby improving the stability of the behavior of the saddle riding type vehicle when the clutch is engaged.

[0045] 10. The control device of the above embodiment is A control device (e.g., 100) for controlling coasting of a saddle-type vehicle (e.g., 10), A clutch detection means (e.g., 121) for detecting a disengaged state of the clutch of the saddle riding type vehicle; A throttle detection means (e.g., 122) for detecting a throttle opening of the saddle riding type vehicle; A bank angle detection means (e.g., 125) for detecting a bank angle of the saddle riding type vehicle; A control means (e.g., 110) for controlling the coasting accompanied by stopping of the engine of the saddle riding type vehicle; Equipped with The control means starts the coasting when the clutch detection means detects that the clutch has been disengaged, the throttle detection means detects that the throttle opening is less than a predetermined opening, and the bank angle detection means detects that the bank angle is less than a threshold value. According to this embodiment, it is possible to prevent the start of coasting while the saddle riding type vehicle is banking, which would otherwise cause the vehicle stability to decrease. That is, coasting can be appropriately performed in the saddle riding type vehicle. Furthermore, applying coasting to the saddle riding type vehicle is advantageous in terms of improving the fuel efficiency of the saddle riding type vehicle.

[0046] The present invention is not limited to the above-described embodiments, and various modifications and variations are possible without departing from the spirit and scope of the present invention. [Explanation of symbols]

[0047] 10: saddle-type vehicle, 11: engine, 12: transmission, 13: left handle grip, 14: clutch lever, 15: shift pedal, 16: right handle grip (throttle operation section), 17: brake lever, 100: control device, 110: control section, 120: various sensors, 121: clutch detection sensor, 122: throttle detection sensor, 123: rotation speed difference detection sensor, 124: gear stage detection sensor, 125: bank angle detection sensor, 126: engine rotation speed sensor, 127: vehicle speed sensor

Claims

1. A control method for controlling coasting of a saddle-ride type vehicle, comprising: a first detection step of detecting a disengaged state of the clutch of the saddle riding type vehicle; a second detection step of detecting a throttle opening degree of the saddle riding type vehicle; a third detection step of detecting a bank angle of the saddle riding type vehicle; a control step of controlling the coasting to stop an engine of the saddle riding type vehicle; Including, The control method is characterized in that, in the control step, the coasting is started when the first detection step detects that the clutch has been disengaged, the second detection step detects that the throttle opening is less than a predetermined opening, and the third detection step detects that the bank angle is less than a threshold value.

2. 2. The control method according to claim 1, wherein the control step changes the threshold value in accordance with a speed of the saddle riding type vehicle.

3. 3. The control method according to claim 2, wherein in the control step, the threshold value is changed so that the threshold value becomes smaller as the speed of the saddle riding type vehicle increases within a predetermined speed range.

4. 4. The control method according to claim 1, wherein, in the control step, when the bank angle becomes equal to or greater than the threshold value while the coasting is being performed, the coasting is terminated.

5. 5. The control method according to claim 4, wherein, in the control step, when the coasting is terminated, a transition time taken for the clutch to transition from a disengaged state to an engaged state is changed in accordance with the bank angle.

6. 6. The control method according to claim 5, wherein in the control step, the transition time is changed in accordance with the bank angle such that the transition time is longer as the bank angle increases.

7. 5. The control method according to claim 4, wherein, in the control step, when the bank angle becomes equal to or greater than the threshold value while the coasting is being performed, the engine is started before the coasting is terminated.

8. 8. The control method according to claim 7, wherein, in the control step, when the engine is started while the coasting is being performed, the engine speed is controlled so that a difference in speed between a drive side and a driven side of the clutch in a disengaged state falls within an allowable range.

9. 8. The control method according to claim 7, wherein in the control step, when the engine is started while the coasting is being performed, a rotation speed of the engine is controlled in accordance with the bank angle.

10. A control device for controlling coasting of a saddle-type vehicle, comprising: a clutch detection means for detecting a disengaged state of the clutch of the saddle riding type vehicle; a throttle detection means for detecting a throttle opening of the saddle riding type vehicle; a bank angle detection means for detecting a bank angle of the saddle riding type vehicle; a control means for controlling the coasting of the saddle riding type vehicle to stop an engine of the saddle riding type vehicle; Equipped with The control means starts the coasting when the clutch detection means detects that the clutch has been disengaged, the throttle detection means detects that the throttle opening is less than a predetermined opening, and the bank angle detection means detects that the bank angle is less than a threshold value.

11. A saddle-type vehicle comprising the control device according to claim 10.

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