CN117881596A

CN117881596A - Saddle-ride type vehicle

Info

Publication number: CN117881596A
Application number: CN202180101924.9A
Authority: CN
Inventors: 滨口祐辅; 古谷昌志; 塚田善昭; 石川润; 高崎笃志; 安达惇; 福吉康弘
Original assignee: Honda Motor Co Ltd
Current assignee: Honda Motor Co Ltd
Priority date: 2021-09-30
Filing date: 2021-09-30
Publication date: 2024-04-12
Also published as: JPWO2023053350A1; DE112021008287T5; WO2023053350A1

Abstract

The saddle-ride type vehicle includes a control mechanism that controls automatic stopping of the engine and restarting after the automatic stopping. The control means restarts the engine at least when an opening operation of a throttle is detected and a closing operation of a clutch is detected as a condition in a state where the manual transmission is engaged, and drives the engine at an idle rotation speed when a closing operation of the throttle is detected within a predetermined period from the start of the restart and at a rotation speed corresponding to an operation amount when the closing operation of the throttle is not detected.

Description

Saddle-ride type vehicle

Technical Field

The present invention relates to a saddle-ride type vehicle.

Background

A saddle-ride type vehicle having an idle stop function is proposed. Such a saddle-ride type vehicle is advantageous in that the engine is automatically stopped when the saddle-ride type vehicle is temporarily stopped while waiting for a green light, and thus fuel efficiency is improved. Patent document 1 discloses an idle stop control technique for a saddle-ride type vehicle provided with a manual transmission. In the control technique of patent document 1, a manual transmission is capable of automatically stopping an engine in a state of being engaged, and as a condition for restarting the engine, an opening operation of a throttle valve and a cut-off operation of a clutch are required. Thus, the abrupt bouncing of the saddle-ride type vehicle can be prevented after the automatic stop and at the time of restarting the engine, and the intention of the rider to start can be reflected.

Prior art literature

Patent literature

Patent document 1: japanese patent No. 5750020

Disclosure of Invention

Problems to be solved by the invention

After the automatic stop of the engine, as an intention of the rider to restart the engine, a case is considered in which the rider wants to prepare for starting and then restart the engine. In the latter case, if the engine is driven at a high rotation, the rider may feel uncomfortable.

The present invention provides a saddle-ride type vehicle capable of performing restart control of an engine according to the intention of a rider.

Means for solving the problems

In accordance with the present invention,

provided is a saddle-ride type vehicle (10) provided with:

an engine (40);

a manual transmission (42) that is coupled to the engine (40) via a clutch (43) and that changes the speed of the engine (40) and outputs the speed;

a throttle valve operation member (80) capable of adjusting the throttle opening of the engine (40);

a clutch operation member (86) capable of operating the interruption of the clutch (43);

a throttle operation detection mechanism (110) that detects an operation performed by a rider on the throttle operation member (80);

a clutch operation detection mechanism (111) that detects an operation of the clutch operation member (86) by a rider; and

a control means (100) for controlling the automatic stop of the engine (40) and the restarting of the engine after the automatic stop,

it is characterized in that the method comprises the steps of,

in a state in which the manual transmission (42) is in gear, the control means (100) restarts the engine (40) at least on condition that the throttle valve operation detection means (110) detects the opening operation of the throttle valve (52), and that the clutch operation detection means (111) detects the cutoff operation of the clutch (43), and,

the control means (100) drives the engine (40) at an idle rotation speed when a closing operation of the throttle valve (52) is detected by the throttle operation detection means (110) within a predetermined period from the start of restart, and drives the engine (40) at a rotation speed corresponding to an operation amount detected by the throttle operation detection means (110) when a closing operation of the throttle valve (52) is not detected by the throttle operation detection means (110).

Effects of the invention

According to the present invention, a saddle-ride type vehicle capable of performing restart control of an engine that meets the intention of a rider can be provided.

Drawings

Fig. 1 is a left side view of a saddle-ride type vehicle according to an embodiment of the present invention.

Fig. 2 is a plan view of the saddle-ride type vehicle of fig. 1.

Fig. 3 is a block diagram of a control device of the saddle-ride type vehicle of fig. 1.

Fig. 4 is a flowchart showing an example of processing performed by the control unit.

Fig. 5 is a flowchart showing an example of processing performed by the control unit.

Fig. 6 is a flowchart showing an example of processing performed by the control unit.

Fig. 7 is a flowchart showing an example of processing performed by the control unit.

Detailed Description

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. The following embodiments are not intended to limit the invention according to the technical aspects, and the combination of features described in the embodiments is not necessarily essential to the invention. Two or more of the features described in the embodiments may be arbitrarily combined. The same or similar components are denoted by the same reference numerals, and redundant description thereof is omitted.

< summary of saddle-ride type vehicle >

Fig. 1 is a left side view of a saddle-ride type vehicle 10 according to an embodiment of the present invention, and fig. 2 is a plan view of the saddle-ride type vehicle 10. Fig. 3 is a block diagram of a control device of the saddle-ride type vehicle 10. As indicated by arrows shown in fig. 1 and 2, the overall length direction of the vehicle is also referred to as the front-rear direction, the width direction is referred to as the left-right direction, and the height direction is referred to as the up-down direction. The saddle-ride type vehicle 10 is sometimes simply referred to as the vehicle 10. The vehicle 10 is a bare type motorcycle, but the present invention can also be applied to various straddle type vehicles including other types of motorcycles.

The vehicle 10 has a double cradle type body frame 12. The body frame 12 includes a head pipe 14, a pair of left and right main frames 16, and a lower frame 18. The pair of left and right main frames 16 branch from the head pipe 14 to the left and right, gradually extend downward rearward, and then extend downward through the bent portion 16 a. The lower frame 18 branches from the head pipe 14 to the left and right, extends obliquely downward rearward under the main frame 16, and then extends substantially horizontally rearward via a bent portion 18a, and is connected to the rear end portion of the main frame 16.

The body frame 12 further includes a pair of left and right seat frames 20, a pair of left and right pivot plates 22, and a pair of left and right reinforcement stays 24. The pair of left and right seat frames 20 slightly extend rearward and upward from the vicinity of the bent portions 16a of the pair of left and right main frames 16. A pair of left and right pivot plates 22 are disposed near the rear end portion of the main frame 16. A pair of left and right reinforcing stays 24 extend obliquely rearward and upward from the vicinity of the main frame 16 where the pivot plate 22 is provided, and are connected to the seat frame 20. A pivot 26 is provided on the pair of left and right pivot plates 22.

The pair of left and right front forks 28 are rotatably journaled by the head pipe 14, and a steering handle bar 32 is attached to the upper ends of the pair of left and right front forks 28 via a top bridge 30 a.

A meter unit 34 having a speedometer and the like is mounted on the top bridge 30 a. A headlight 36 for illuminating the front of the vehicle 10 and a pair of left and right front direction indicators 37 are provided in front of the head pipe 14. The front wheel WF is rotatably journaled by a pair of left and right front forks 28, and a front fender 38 is provided at an upper portion of the front wheel WF.

An engine 40 and a manual transmission 42 are provided between the main frame 16 and the lower frame 18. The engine 40 is, for example, a single-cylinder four-stroke DOHC engine, and includes a throttle valve 52 for adjusting an intake air amount, a fuel injection device (injector) 40b for injecting fuel, and an ignition device 40c for igniting a mixture in a combustion chamber. A fuel tank 44 that accommodates fuel supplied to the engine 40 is mounted above the engine 40 and above the front side of the main frame 16. An exhaust pipe 46 is attached to the engine 40, and a muffler 48 is connected to the exhaust pipe 46. The oil cooler 50 is provided in front of the engine 40 and on the front side of the lower frame 18, and a throttle valve 52 of the engine 40 and an air cleaner 54 for cleaning air supplied to the engine 40 through the throttle valve 52 are provided in the rear of the engine 40.

The motor 41 is coupled to the engine 40. The motor 41 functions as a starter for starting the engine 40 and also functions as an alternator that is driven by the engine 40 to generate electric power.

The manual transmission 42 is coupled to the engine 40 via a clutch 43, and changes the speed of the rotation of the engine 40 transmitted to the rear wheels WR and outputs the change. The manual transmission 42 is a constant mesh type transmission that is shifted to any one of a gear ratio of first gear to sixth gear and a neutral gear, for example, according to a shift operation of a rider with respect to the gear shift pedal 88. A state in which any one of the gear ratios of first gear to sixth gear is selected is also referred to as a shift-in state. The gear shift pedal 88 is a shift position operating member provided in front of the left foot pedal 64 so as to be operable by the rider. The rider places the left foot on the left foot pedal 64 and operates the gear shift pedal 88 with the left foot, thereby switching the state of the manual transmission 42. The clutch 43 is, for example, a wet type multiple plate coil spring type manual clutch, and connects or disconnects transmission of driving force between the engine 40 and the manual transmission 42.

The swing arm 56 is pivotally supported by a pair of left and right pivot plates 22 via a pivot shaft 26 so as to be swingable in a substantially vertical direction, and a rear bumper 58 is interposed between an upper side of a rear end portion of the swing arm 56 and the seat frame 20. A rear wheel WR as a driving wheel is rotatably journaled at the rear end of the swing arm 56. The driving force of the engine 40 is transmitted to the rear wheel WR via the manual transmission 42 and the chain 60. A pair of left and right foot pedal holders 62 extending rearward are fixed to the pair of left and right pivot plates 22, and a rider foot pedal 64 and a co-rider foot pedal 66 are mounted on the front and rear portions of the pair of left and right foot pedal holders 62.

A seat 68 for seating (straddling) a rider and a co-rider is attached to the rear of the fuel tank 44 and the upper portion of the seat frame 20, and the seat 68 is a tandem seat composed of a seat 68a for the rider and a seat 68b for the co-rider. A pair of left and right grab rails 70 and a rear turn signal 72 for a rider to hold are attached to the rear portion of the seat frame 20. A rear fender 74 is provided behind the seat frame 20, and a tail lamp 76 is attached to the rear fender 74.

As shown in fig. 2, a throttle handle 80 is provided rotatably with respect to the handle bar 32 on the right end side of the handle bar 32. The throttle grip 80 is a throttle operation member provided so as to be operable by a rider and so as to be able to adjust the opening degree of the throttle valve 52 by the rider. In the case of the present embodiment, the throttle grip 80 and the throttle valve 52 are physically coupled by a mechanical wire. However, a throttle by wire system may be employed in which the throttle grip 80 is not physically connected to the throttle valve 52, but the throttle operation (accelerator operation) by the rider is converted into an electric signal to control the throttle valve.

A brake lever 82 is provided on the handlebar 32 in front of the throttle grip 80. The brake lever 82 is a brake operation member provided so as to be operable by a rider and operable to operate the front wheel brake 81 that applies a braking force to the front wheel WF of the vehicle 10. The rider operates the brake lever 82 with the right hand, and thereby the front wheel brake 81 provided to the front wheel WF operates to apply braking force to the front wheel WF. The front wheel brake 81 is, for example, a disc brake.

A foot brake pedal 84 is provided forward of the right foot pedal 64. The foot brake pedal 84 is a brake operation member provided to be operable by a rider and operable to operate the rear wheel brake 83 that applies braking force to the rear wheel WR of the vehicle 10. The rider puts a right foot on the right foot pedal 64, and operates the foot brake pedal 84 with the right foot, thereby operating the rear wheel brake 83 provided to the rear wheel WR to apply braking force to the rear wheel WR. The rear wheel brake 83 is, for example, a disc brake.

The handle bar 32 is provided with a clutch lever 86 at the front of the left end side of the handle bar 32. The clutch lever 86 is an intermittent clutch operation member provided to be operable by the rider and operable by the clutch 43. When the rider pulls the clutch lever 86, the clutch 43 is in the off state, and when released, the clutch is in the on state.

< control device >

The control device of the vehicle 10 will be described mainly with reference to fig. 3. The vehicle 10 includes a control unit (ECU) 100. The control unit 100 includes a processor typified by a CPU, a memory device such as a semiconductor memory, an input/output interface with an external device, a processing circuit for a sensor signal, and a drive circuit for an actuator. Programs executed by the processor, data used by the processor in processing, and the like are stored in the storage device. The processor and the storage device may also be provided in plural.

The control unit 100 obtains detection results of the various sensors 110 to 116 to control the engine 40 and the motor 41. The throttle operation sensor 110 is a sensor that detects an operation of the throttle handle 80 by the rider, and may be a sensor that is provided to the throttle handle 80 and detects a rotation amount of the throttle handle 80, or may be a sensor that is provided to the throttle valve 52 and detects a throttle opening. The clutch operation sensor 111 is a sensor that detects an operation of the clutch lever 86 by the rider, and may be a sensor that is provided to the clutch lever 86 and detects a state in which the lever is pulled (a cut-off operation), or may be a sensor that is provided to the clutch 43 and detects rotation of an arm of the clutch 43.

The brake operation sensor 112 is a sensor that detects an operation of the foot brake pedal 84 by the rider. The engine speed sensor 113 is a sensor that detects the speed of the engine 40. The gear sensor 114 is a sensor that detects the state of the manual transmission 42 (one of first gear to sixth gear or neutral gear). The vehicle speed sensor 115 is a sensor that detects the vehicle speed of the vehicle 10, and is, for example, a sensor that detects the rotation amount of the front wheels WF. The gradient sensor 116 is a sensor that detects the gradient of the traveling road of the vehicle 10.

< treatment example >

The control unit 100 performs idle stop control of the engine 40. In the idle stop control, the engine 40 is automatically stopped when the vehicle 10 is temporarily stopped by waiting for a green light, or the engine 40 is restarted when it is estimated that the vehicle 10 starts after the automatic stop. Fig. 4 to 7 are flowcharts showing an example of processing performed by the processor of the control unit 100 for the idle stop control.

Fig. 4 shows an example of processing related to automatic stop of the engine 40. In S1, the detection results of the respective sensors are acquired. In S2, it is determined whether or not a predetermined idle stop condition is satisfied based on the detection result acquired in S1. If it is determined that the idle stop condition is satisfied, the process proceeds to S3.

The idle stop condition may be, for example, at least a case where the vehicle speed is equal to or less than a predetermined vehicle speed (for example, 3 km/h) and an opening operation of the throttle valve 52 by the rider is not detected for a predetermined time (for example, 3 seconds). Further, when the manual transmission 42 is engaged, the clutch 43 is not operated to be disconnected by the rider for a predetermined period of time (for example, 3 seconds), and when the manual transmission 42 is disengaged, the clutch 43 is not operated to be disconnected by the rider for a predetermined period of time (for example, 3 seconds). Further, the headlight 36 may be turned off, and the rider may be permitted to perform the idle stop control (an idle stop switch is provided, and the idle stop switch is turned on) in advance.

In S3, the engine 40 is automatically stopped. For example, the engine 40 can be stopped by cutting off the supply of fuel by the fuel injection device 40b or stopping the ignition by the ignition device 40c.

Fig. 5 shows an example of the process when the engine 40 is restarted after the automatic stop. In S11, the detection results of the respective sensors are acquired. In S12, details of the determination processing for determining whether the restart condition is satisfied will be described later. In S13, if it is determined in S12 that the restart condition is satisfied, the process proceeds to S14. In S14 to S17, a setting associated with restarting of the engine 40 is performed.

In S14, the motor 41 is driven as a starter at the time of restarting the engine 40, and a determination is made as to whether or not to assist the restart. In starting and restarting the engine 40, basically, the motor 41 is driven as a starter to assist the starting of the engine 40.

However, after the automatic stop of the engine 40, the restart condition may be satisfied during the period of the inertia running before the stop of the vehicle 10. For example, when the rider runs slowly toward the intersection while waiting for the red light, the rider immediately turns to the green light, so that the vehicle 10 is not stopped and accelerated. In S14, it is determined whether or not the rotational speed of the engine 40 is equal to or greater than a threshold (for example, 600 rpm) based on the detection result of the engine rotational speed sensor 113 acquired in S11, and if the rotational speed is equal to or greater than the threshold, the routine proceeds to S15, and if the rotational speed is less than the threshold, the routine proceeds to S16. When the rotational speed of the engine 40 is equal to or greater than the threshold value, the engine 40 can be restarted without driving the motor 41. Therefore, in S15, it is set that the motor 41 is not operated as a starter at the time of restarting the engine 40. Since the electric power generation in the electric motor 41 is also stopped by the automatic stop of the engine 40, there is a concern that the amount of electric power stored in the battery of the vehicle 10 decreases, but by reducing the frequency of using the electric motor 41 in restarting the engine 40, the electric power consumption can be suppressed.

In S16, it is determined whether the gradient of the traveling road of the vehicle 10 is an upward gradient equal to or greater than a threshold value, based on the detection result of the gradient sensor 116 acquired in S11. If the upward gradient is equal to or greater than the threshold value, the flow proceeds to S17, and if the upward gradient is less than the threshold value, the flow proceeds to S18. In S17, the target rotation speed of the engine 40 at the time of restarting is set higher than usual. For example, the idle rotation speed is set to 1.2 times, or the rotation speed of the engine 40 is set to be higher than usual with respect to the throttle operation of the rider. The vehicle 10 of the present embodiment is provided with the manual clutch 43, and can prevent the engine 40 from stalling and the vehicle 10 from backing up when the vehicle 10 starts on an uphill road.

In S18, the engine 40 is restarted. The details are described later.

< restart determination Process >

An example of the restart determination process of S13 will be described with reference to fig. 6. In S21, based on the detection result of the clutch operation sensor 111 acquired in S11, it is determined whether or not the disconnection operation of the clutch 43 by the rider is detected, and if so, the routine proceeds to S22, and if not, the routine proceeds to S27, and it is determined that the vehicle is kept stopped (the restart condition is not satisfied).

In S22, based on the detection result of the shift position sensor 114 acquired in S11, it is determined whether the state of the manual transmission 42 is in gear or in neutral, and the process proceeds to S23 when in gear, and proceeds to S26 when in neutral, and it is determined that the restart condition is satisfied. In the present embodiment, if the manual transmission 42 is in neutral, if the clutch 43 is disengaged, it is considered that the rider intends to restart the engine 40, and only the detection is used as a condition to restart the engine 40. However, other conditions may be added to the restart conditions.

In S23, based on the detection result of the throttle operation sensor 110 acquired in S11, it is determined whether or not an opening operation of the throttle valve 52 by the rider (turning operation of the throttle grip 80) is detected, and if so, the routine proceeds to S24, and if not, the routine proceeds to S27, where it is determined that the vehicle is stopped (restart condition is not satisfied). When the manual transmission 42 is in the engaged state, not only the cut-off operation of the clutch 43 but also the opening operation of the throttle valve 52 are included in the restart condition, so that when the rider intends to start immediately, the increase in the output of the engine 40 at the time of restarting is improved, and the engine 40 can be prevented from stalling.

In S24, it is determined whether the gradient of the traveling road of the vehicle 10 is an upward gradient equal to or greater than a threshold value, based on the detection result of the gradient sensor 116 acquired in S11. If the upward gradient is equal to or greater than the threshold value, the flow proceeds to S25, and if the upward gradient is equal to or less than the threshold value, the flow proceeds to S26, and it is determined that the restart condition is satisfied. The threshold value here may be the same as or different from the threshold value of S16. In S25, based on the detection result of the brake operation sensor 112 acquired in S11, it is determined whether or not an operation of the rear wheel brake 83 by the rider is detected, the flow proceeds to S26 when the operation is detected, it is determined that the restart condition is satisfied, and when the operation is not detected, it is determined that the stop is maintained (the restart condition is not satisfied) to S27. By including the operation of the rear wheel brake 83 in the restart condition, the vehicle 10 can be prevented from moving backward on an uphill road at the time of starting.

In addition, in the case where the manual transmission 42 is in neutral, detection of the operation of the rear wheel brake 83 is not included in the restart condition. This is because, when the manual transmission 42 is in neutral, the shift operation of the manual transmission 42 is performed by the left foot. In the case where the manual transmission 42 is in neutral, detection of the operation of the front wheel brake 81 may be included in the restart condition, and in this case, a sensor may be provided to detect the operation of the brake lever 82 by the rider.

In the present embodiment, the operation of the rear wheel brake 83 is further set to the restart condition when the manual transmission 42 is engaged, the opening operation of the throttle valve 52, and the running road are on an ascending road, but the restart condition of the rear wheel brake 83 may be excluded, and other conditions may be added to the restart condition.

< restart Process >

The restart processing of S18 will be described with reference to fig. 7. In S31, restarting of the engine 40 is started. If no non-operation of the motor 41 is set in S15, the motor 41 is driven as a starter, and the fuel of the fuel injection device 40b is supplied and the ignition device 40c is ignited to drive the engine 40. If the non-operation of the motor 41 is set in S15, the motor 41 is not driven and the engine 40 is driven. In S17, when the target rotation speed of the engine 40 at the time of restarting is set higher than usual, drive control is performed reflecting this.

In S32, it is determined whether the manual transmission 42 is restarted in the engaged state or in the neutral state based on the detection result of the shift position sensor 114 acquired in S11, and the process proceeds to S34 if the manual transmission is restarted in the engaged state, and proceeds to S33 if the manual transmission is restarted in the neutral state. In S33, the engine 40 is controlled to maintain the idle rotation speed (for example, about 1000 rpm).

In S34 to S37, the process is related to the rotational speed control of the engine 40 for a predetermined period from the start of restart. When the manual transmission 42 is restarted in a state of being engaged, in the present embodiment, an opening operation of the throttle valve 52 is required as a restart condition (S23). Here, there are cases where the rider wants to start the vehicle 10 immediately, and cases where the rider wants to start the engine 40 again and wait for starting. When the rider intends to restart the engine 40 at ease, if the rotation speed of the engine 40 is simply increased in proportion to the amount of operation of the rider with respect to the throttle handle 80, the engine 40 is accelerated to a high rotation against the rider's intention, and the rider may be surprised by the noise, which gives the rider a sense of discomfort.

Therefore, in the present embodiment, when the closing operation of the throttle valve 52 is detected between the restart start and the predetermined period, the rotation speed of the engine 40 is suppressed to the idle rotation speed and the vehicle is driven, and the intention of the rider who wants to restart the engine 40 is reflected. On the other hand, when the closing operation is not detected, the rotation speed of the engine 40 is increased according to the operation amount (opening degree) to reflect the intention of the rider who wants to start immediately. This enables restart control of the engine 40 in accordance with the intention of the rider.

In S34, the detection result of the throttle operation sensor 110 is acquired. In S35, it is determined whether the closing operation of the throttle valve 52 is detected based on the detection result acquired in S34. S33 is entered when the closing operation is detected, and S36 is entered when the closing operation is not detected.

In S33, the engine 40 is driven at an idle rotation speed. When the manual transmission 42 is restarted while engaged, if a closing operation (an operation to return the throttle handle 80) is detected after the restart of the engine 40 is started by detecting an opening operation of the throttle valve 52, the drive idle rotation speed of the engine 40 is limited by reducing the fuel supply amount or the like even when the throttle valve 52 is opened at that time. This makes it possible to reflect the intention of the rider who wants to restart the engine 40. After S33, normal control of the engine 40 is started, and when the throttle valve 52 is opened, the output of the engine 40 is increased in proportion to the operation amount.

In S36, the engine 40 is driven at a rotation speed corresponding to the opening operation amount (opening degree) of the throttle valve 52 based on the detection result obtained in S34. It is possible to reflect the intention of the rider who wants to immediately step up the vehicle 10. S37 determines whether a predetermined time (for example, 3 seconds) has elapsed from the restart of S31. If not, the flow returns to S34, and the closing operation of the throttle valve 52 is monitored. When the vehicle passes, normal control of the engine 40 is started.

Summary of the embodiments

The above embodiment discloses at least the following saddle-ride type vehicle.

1. The saddle-ride type vehicle (10) according to the above embodiment is provided with:

an engine (40);

wherein,

the control means (100) drives the engine (40) at an idle rotation speed when the closing operation of the throttle valve (52) is detected by the throttle operation detection means (110) within a predetermined period from the start of restart, and drives the engine (40) at a rotation speed corresponding to the operation amount detected by the throttle operation detection means (110) when the closing operation of the throttle valve (52) is not detected by the throttle operation detection means (110).

According to this embodiment, when the throttle valve is opened and returned, it is estimated that the rider intends to restart the engine and drive at the idle rotation speed. On the other hand, when the operation of returning the throttle valve is not performed, it is estimated that the rider intends to start immediately and drives the engine at a rotational speed corresponding to the operation amount. Further, by using the opening operation of the throttle valve as a trigger for restarting, even when the rider wants to start immediately, it is possible to realize the same start in the throttle operation and clutch operation as in the normal start in which the engine is driven, and to suppress the engine stall. As described above, according to the present embodiment, it is possible to provide a saddle-ride type vehicle capable of performing restart control of an engine that meets the intention of a rider.

2. The saddle-ride type vehicle (10) according to the above embodiment is provided with:

an electric motor (41) that assists in starting the engine (40); and

a rotation speed detection means (113) for detecting the rotation speed of the engine (40),

upon restart of the engine (40),

when the detection result of the rotation speed detection means (113) is less than a predetermined rotation speed, the control means (100) drives the motor (41) and makes it assist in restarting the engine (40),

when the detection result of the rotation speed detection means (113) is equal to or greater than the predetermined rotation speed, the control means (100) does not drive the motor (41).

According to this embodiment, the driving frequency of the motor can be reduced and the electric load can be reduced.

3. The saddle-ride type vehicle (10) according to the above embodiment is provided with:

a brake (83) capable of braking the saddle-ridden vehicle;

a brake operating member (84) operable to operate the operation of the brake;

a brake operation detection mechanism (112) that detects an operation of the brake operation member by a rider; and

a gradient detecting means (116) for detecting a gradient of the traveling road,

when the manual transmission (42) is in a state of being engaged, and a gradient equal to or greater than a predetermined value is detected by the gradient detection means (116), the control means (100) restarts the engine (40) at least on the condition that an opening operation of the throttle valve (52) is detected by the throttle operation detection means (110), a closing operation of the clutch (43) is detected by the clutch operation detection means (111), and an operation of the brake (83) is detected by the brake operation detection means (112).

According to this embodiment, the vehicle can be prevented from moving backward when the vehicle starts, and the intention of the rider to start can be estimated more clearly.

4. In the saddle-ride type vehicle (10) according to the above embodiment, when the engine (40) is restarted,

the control means (100) drives the engine (40) at a higher rotational speed when a gradient of the predetermined value or more is detected by the gradient detection means (116) than when a gradient of less than the predetermined value is detected.

According to this embodiment, it is possible to suppress the engine stall at the start of the vehicle on the ascending road and the vehicle reverse at the start of the vehicle.

The embodiments of the present invention have been described above, but the present invention is not limited to the above embodiments, and various modifications and changes can be made within the scope of the present invention.

Claims

1. A saddle-ride type vehicle (10) is provided with:

an engine (40);

it is characterized in that the method comprises the steps of,

2. The straddle-type vehicle (10) according to claim 1, wherein,

the saddle-ride type vehicle (10) is provided with:

an electric motor (41) that assists in starting the engine (40); and

upon restart of the engine (40),

3. The straddle-type vehicle (10) according to claim 1, wherein,

the saddle-ride type vehicle (10) is provided with:

a brake (83) capable of braking the saddle-ridden vehicle;

a brake operating member (84) operable to operate the operation of the brake;

4. The straddle-type vehicle (10) according to claim 3, wherein,

in the case of restarting the engine (40),