JP7630631B2 - Saddle-type vehicle - Google Patents

Description

The present invention relates to a saddle-type vehicle.

A straddle-type vehicle equipped with an idle stop function has been proposed. Such a straddle-type vehicle is advantageous in terms of improving fuel efficiency because the engine is automatically stopped when the straddle-type vehicle is temporarily stopped at a traffic light. Patent Document 1 discloses an idle stop control technology for a straddle-type vehicle equipped with a manual transmission. The control technology of Patent Document 1 enables the engine to be automatically stopped when the manual transmission is in gear, while requiring the throttle to be opened and the clutch to be disengaged as conditions for restarting the engine. This makes it possible to prevent the straddle-type vehicle from suddenly jumping out when restarting after the engine has automatically stopped, while reflecting the rider's intention to start.

Patent No. 5750020

After the engine automatically stops, the rider may want to restart the engine in two cases: when he or she wants to start moving immediately, and when he or she wants to restart the engine in preparation for starting. In the latter case, if the engine is driven at high speed, the rider may feel uncomfortable.

The object of the present invention is to provide a saddle-type vehicle capable of engine restart control in accordance with the rider's intentions.

According to the present invention,
An engine (40);
a manual transmission (42) connected to the engine (40) via a clutch (43) for changing the speed of rotation of the engine (40) and outputting the rotation;
a throttle operator (80) capable of adjusting an opening degree of a throttle (52) of the engine (40);
a clutch operator (86) capable of engaging and disengaging the clutch (43);
a throttle operation detection means (110) for detecting a rider's operation of the throttle operator (80);
a clutch operation detection means (111) for detecting an operation of the clutch operator (86) by a rider;
a control means (100) for controlling the automatic stopping and restarting of the engine (40);
A saddle-type vehicle (10) comprising:
The control means (100)
restarting the engine (40) under at least the condition that, when the manual transmission (42) is in an in-gear state, the throttle (52) is opened by the throttle operation detection means (110) and the clutch (43) is disengaged by the clutch operation detection means (111); and
if the throttle operation detection means (110) detects a closing operation of the throttle (52) during a predetermined period from the start of restart, the engine (40) is driven at an idling speed, and if the throttle operation detection means (110) does not detect a closing operation of the throttle (52), the engine (40) is driven at a speed corresponding to the amount of operation detected by the throttle operation detection means (110).
A saddle-type vehicle is provided.

The present invention makes it possible to provide a saddle-type vehicle that enables engine restart control in accordance with the rider's intentions.

1 is a left side view of a saddle-type vehicle according to an embodiment of the present invention; FIG. 2 is a top view of the saddle-type vehicle of FIG. 1 . FIG. 2 is a block diagram of a control device for the saddle-type vehicle of FIG. 1 . 4 is a flowchart showing an example of processing executed by a control unit. 4 is a flowchart showing an example of processing executed by a control unit. 5 is a flowchart showing an example of processing executed by a control unit. 4 is a flowchart showing an example of processing executed by a control unit.

The embodiments are described in detail below with reference to the attached drawings. Note that the following embodiments do not limit the invention according to the claims, and not all combinations of features described in the embodiments are necessarily essential to the invention. Two or more of the features described in the embodiments may be combined in any desired manner. In addition, the same reference numbers are used for identical or similar configurations, and duplicate descriptions are omitted.

<Overview of saddle-type vehicles>
Fig. 1 is a left side view of a saddle riding type vehicle 10 according to an embodiment of the present invention, and Fig. 2 is a top view of the saddle riding type vehicle 10. Fig. 3 is a block diagram of a control device for the saddle riding type vehicle 10. As indicated by the arrows in Figs. 1 and 2, the overall length direction of the vehicle is also referred to as the front-rear direction, the width direction is also referred to as the left-right direction, and the height direction is also referred to as the up-down direction. The saddle riding type vehicle 10 may be simply referred to as the vehicle 10. The vehicle 10 is a naked type motorcycle, but the present invention is also applicable to various types of saddle riding type vehicles including other types of motorcycles.

The vehicle 10 has a double-cradle body frame 12. The body frame 12 has a head pipe 14, a pair of left and right main frames 16, and a down frame 18. The pair of left and right main frames 16 branch off to the left and right from the head pipe 14, extend gently rearward, and then extend downward via a curved portion 16a. The down frame 18 branches off to the left and right from the head pipe 14, extends diagonally downward and rearward below the main frames 16, and then extends approximately horizontally rearward via a curved portion 18a and is connected to the rear end of the main frames 16.

The vehicle body frame 12 further has 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 reinforcing stays 24. The pair of left and right seat frames 20 extend slightly upward and rearward from near the curved portions 16a of the pair of left and right main frames 16. The pair of left and right pivot plates 22 are disposed near the rear end of the main frames 16. The pair of left and right reinforcing stays 24 extend diagonally upward and rearward from near where the pivot plates 22 of the main frames 16 are provided, and are connected to the seat frames 20. The pair of left and right pivot plates 22 are provided with pivots 26.

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

A meter section 34 having a speedometer and the like is attached to the top bridge 30a. A headlight 36 that illuminates the area ahead of the vehicle 10 and a pair of left and right front blinkers 37 are provided in front of the head pipe 14. The front wheel WF is rotatably supported by a pair of left and right front forks 28, and a front fender 38 is provided above the front wheel WF.

Between the main frame 16 and the down frame 18, an engine 40 and a manual transmission 42 are provided. The engine 40 is, for example, a single-cylinder, four-stroke DOHC engine, and is equipped with a throttle 52 for adjusting the amount of intake air, a fuel injection device (injector) 40b for injecting fuel, and an ignition device 40c for igniting the mixture in the combustion chamber. A fuel tank 44 containing fuel supplied to the engine 40 is attached above the engine 40 and to the upper 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. An oil cooler 50 is provided in front of the engine 40 and in front of the down frame 18, and a throttle 52 of the engine 40 and an air cleaner 54 for purifying the air supplied to the engine 40 through the throttle 52 are provided behind the engine 40.

The electric motor 41 is connected to the engine 40. The electric motor 41 functions as a starter that starts 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 connected to the engine 40 via the clutch 43, and shifts and outputs the rotation of the engine 40 transmitted to the rear wheel WR. The manual transmission 42 is a constant mesh type transmission that can be switched between, for example, one of the first to sixth gear ratios or neutral, depending on the rider's shift operation on the gear change pedal 88. The state in which one of the first to sixth gear ratios is selected is also called in-gear. The gear change pedal 88 is a shift operator that is provided in front of the left step 64 so that the rider can operate it. The rider places his left foot on the left step 64 and operates the gear change pedal 88 with his left foot to switch the state of the manual transmission 42. The clutch 43 is, for example, a wet multi-plate coil spring type manual clutch, and connects or disconnects the transmission of driving force between the engine 40 and the manual transmission 42.

A swing arm 56 is supported via a pivot 26 on the pair of left and right pivot plates 22 so as to be swingable in a generally vertical direction, and a rear cushion 58 is interposed between the upper side of the rear end of the swing arm 56 and the seat frame 20. A rear wheel WR, which is a drive wheel, is rotatably supported on the rear end of the swing arm 56. The driving force of the engine 40 is transmitted to the rear wheel WR via a manual transmission 42 and a chain 60. A pair of left and right step holders 62 extending rearward are fixed to the pair of left and right pivot plates 22, and steps 64, 66 for the rider and passenger are attached to the front and rear of the pair of left and right step holders 62, respectively.

A seat 68 for the rider and passenger to sit (straddle) is attached to the rear of the fuel tank 44 and to the top of the seat frame 20. The seat 68 is a tandem seat consisting of a rider seat 68a for the rider and a passenger seat 68b for the passenger. A pair of grab bars 70 for the passenger to grasp, and rear blinkers 72 are attached to the rear 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 grip 80 is provided on the right end of the handlebar 32 so as to be rotatable relative to the handlebar 32. The throttle grip 80 is a throttle operator that is operable by the rider and allows the rider to adjust the opening of the throttle 52. In the present embodiment, the throttle grip 80 and the throttle 52 are physically connected by a mechanical wire. However, a throttle-by-wire system may be adopted in which the throttle grip 80 and the throttle 52 are not physically connected and the throttle operation (accelerator operation) of the rider is converted into an electrical signal to control the throttle.

A brake lever 82 is provided on the handlebar 32 in front of the throttle grip 80. The brake lever 82 is a brake operator that is operable by the rider and can operate a front wheel brake 81 that applies a braking force to the front wheel WF of the vehicle 10. When the rider operates the brake lever 82 with his/her right hand, the front wheel brake 81 provided on the front wheel WF is operated, and a braking force is applied to the front wheel WF. The front wheel brake 81 is, for example, a disc brake.

A foot brake pedal 84 is provided in front of the right step 64. The foot brake pedal 84 is a brake operator that is operable by the rider and can operate a rear wheel brake 83 that applies a braking force to the rear wheel WR of the vehicle 10. When the rider places his/her right foot on the right step 64 and operates the foot brake pedal 84 with his/her right foot, the rear wheel brake 83 provided on the rear wheel WR is activated and a braking force is applied to the rear wheel WR. The rear wheel brake 83 is, for example, a disc brake.

In addition, a clutch lever 86 is provided on the handlebar 32, in front of the left end side of the handlebar 32. The clutch lever 86 is a clutch operator that is operable by the rider and can operate to engage and disengage the clutch 43. When the rider pulls the clutch lever 86, the clutch 43 is disengaged, and when the rider releases it, the clutch 43 is engaged.

<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 such as a CPU, a storage device such as a semiconductor memory, an input/output interface with an external device, a processing circuit for sensor signals, and a drive circuit for actuators. The storage device stores programs executed by the processor, data used by the processor for processing, etc. A plurality of processors and storage devices may be provided.

The control unit 100 acquires the detection results of various sensors 110-116 and controls the engine 40 and the electric motor 41. The throttle operation sensor 110 is a sensor that detects the rider's operation of the throttle grip 80, and may be a sensor provided on the throttle grip 80 that detects the amount of rotation of the throttle grip 80, or a sensor provided on the throttle 52 that detects the throttle opening. The clutch operation sensor 111 is a sensor that detects the rider's operation of the clutch lever 86, and may be a sensor provided on the clutch lever 86 that detects that the lever has been pulled (disengagement operation), or a sensor provided on the clutch 43 that detects the rotation of the arm of the clutch 43.

The brake operation sensor 112 is a sensor that detects the operation of the rider on the foot brake pedal 84. The engine speed sensor 113 is a sensor that detects the rotation speed of the engine 40. The shift position sensor 114 is a sensor that detects the state of the manual transmission 42 (any of first to sixth gears, or neutral). The vehicle speed sensor 115 is a sensor that detects the vehicle speed of the vehicle 10, for example, a sensor that detects the amount of rotation of the front wheel WF. The gradient sensor 116 is a sensor that detects the gradient of the road on which the vehicle 10 is traveling.

<Processing 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 at a traffic light, and the engine 40 is restarted when it is estimated that the vehicle 10 will start moving after the automatic stop. Figures 4 to 7 are flowcharts showing examples of processing executed by the processor of the control unit 100 regarding the idle stop control.

Figure 4 shows an example of processing related to automatic stopping of the engine 40. In S1, the detection results of each sensor are obtained. In S2, it is determined whether or not a predetermined idle stop condition is met based on the detection results obtained in S1. If it is determined that the idle stop condition is met, the process proceeds to S3.

The idle stop condition may be, for example, that the vehicle speed is equal to or lower than a specified vehicle speed (e.g., 3 km/h) and that the rider has not opened the throttle 52 for a specified time (e.g., 3 seconds). In addition, when the manual transmission 42 is in-gear, the rider has not disengaged the clutch 43 for a specified time (e.g., 3 seconds). When the manual transmission 42 is in neutral, the rider has not disengaged the clutch 43 for a specified time (e.g., 3 seconds). Other conditions may include that the headlights 36 are turned off and that the rider has permitted the execution of the idle stop control in advance (that is, that an idle stop switch is provided and turned on by the rider).

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 by stopping ignition by the ignition device 40c.

Figure 5 shows an example of the process for restarting the engine 40 after an automatic stop. In S11, the detection results of each sensor are obtained. In S12, a process is performed to determine whether or not the restart conditions are met, as will be described in detail below. In S13, if it is determined in S12 that the restart conditions are met, the process proceeds to S14. In S14 to S17, settings related to the restart of the engine 40 are made.

In S14, a determination is made as to whether or not to drive the electric motor 41 as a starter when restarting the engine 40 and assist in the restart. When starting and restarting the engine 40, the electric motor 41 is basically driven as a starter to assist in starting the engine 40.

However, after the engine 40 is automatically stopped, the restart condition may be satisfied while the vehicle 10 is coasting before being stopped. For example, when the rider is slowly moving toward an intersection because of a red light, the light immediately turns green, and the rider accelerates the vehicle 10 without stopping it. In S14, based on the detection result of the engine speed sensor 113 acquired in S11, it is determined whether the rotation speed of the engine 40 is equal to or greater than a threshold value (e.g., 600 rpm). If the rotation speed is equal to or greater than the threshold value, the process proceeds to S15, and if the rotation speed is less than the threshold value, the process proceeds to S16. If the rotation speed of the engine 40 is equal to or greater than the threshold value, the engine 40 can be restarted without driving the electric motor 41. For this reason, in S15, the electric motor 41 is set not to operate as a starter when the engine 40 is restarted. Since the electric power generation by the electric motor 41 is also stopped due to the automatic stopping of the engine 40, there is a concern that the amount of electricity stored in the battery of the vehicle 10 may decrease. However, by reducing the frequency with which the electric motor 41 is used to restart the engine 40, it is possible to reduce power consumption.

In S16, based on the detection result of the gradient sensor 116 obtained in S11, it is determined whether the gradient of the road on which the vehicle 10 is traveling is an uphill gradient equal to or greater than a threshold value. If the uphill gradient is equal to or greater than the threshold value, the process proceeds to S17, and if the uphill gradient is less than the threshold value, the process proceeds to S18. In S17, the target rotation speed of the engine 40 at the time of restart is set higher than normal. For example, the idling rotation speed is set to 1.2 times, or the rotation speed of the engine 40 is set higher than normal in response to the rider's throttle operation. The vehicle 10 of this embodiment is equipped with a manual clutch 43, which can prevent the engine 40 from stalling or the vehicle 10 from rolling backwards when the vehicle 10 starts on an uphill road.

In S18, the engine 40 is restarted. Details will be described later.

<Restart Determination Process>
An example of the restart determination process in S13 will be described with reference to Fig. 6. In S21, it is determined whether or not a disengagement operation of the clutch 43 by the rider has been detected based on the detection result of the clutch operation sensor 111 acquired in S11, and if it has been detected, the process proceeds to S22, and if it has not been detected, the process proceeds to S27, in which it is determined that the stop is maintained (the restart condition is not satisfied).

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

In S23, based on the detection result of the throttle operation sensor 110 obtained in S11, it is determined whether or not the opening operation of the throttle 52 (rotation operation of the throttle grip 80) by the rider has been detected. If it has been detected, the process proceeds to S24. If it has not been detected, the process proceeds to S27 and it is determined that the engine is to remain stopped (the restart condition is not satisfied). When the manual transmission 42 is in-gear, by including the opening operation of the throttle 52 as well as the disengagement operation of the clutch 43 as a restart condition, the output of the engine 40 can be improved at the time of restart when the rider intends to start moving immediately, and the engine 40 can be prevented from stalling.

In S24, based on the detection result of the gradient sensor 116 acquired in S11, it is determined whether the gradient of the road on which the vehicle 10 is traveling is an uphill gradient equal to or greater than a threshold value. If the uphill gradient is equal to or greater than the threshold value, the process proceeds to S25. If the uphill gradient is less than the threshold value, the process proceeds to S26, where it is determined that the restart condition is satisfied. The threshold value here may be the same as or different from the threshold value in S16. In S25, based on the detection result of the brake operation sensor 112 acquired in S11, it is determined whether or not the operation of the rear wheel brake 83 by the rider has been detected. If the operation of the rear wheel brake 83 has been detected, the process proceeds to S26, where it is determined that the restart condition is satisfied. If the operation of the rear wheel brake 83 has not been detected, the process proceeds to S27, where it is determined that the vehicle is stopped and maintained (the restart condition is not satisfied). By including the operation of the rear wheel brake 83 in the restart condition, it is possible to prevent the vehicle 10 from rolling back on an uphill road when starting.

When the manual transmission 42 is in neutral, the restart conditions do not include detection of the operation of the rear wheel brake 83. This is because when the manual transmission 42 is in neutral, the manual transmission 42 is subsequently shifted by the left foot. When the manual transmission 42 is in neutral, the restart conditions may also include detection of the operation of the front wheel brake 81, in which case a sensor may be provided that detects the rider's operation of the brake lever 82.

In this embodiment, when the manual transmission 42 is in gear, the restart conditions are disengaging the clutch 43, opening the throttle 52, and, if the road is an uphill road, further activating the rear wheel brake 83. However, the activation of the rear wheel brake 83 may be excluded from the restart conditions, or other conditions may be added to the restart conditions.

<Restart process>
The restart process of S18 will be described with reference to Fig. 7. In S31, restart of the engine 40 is started. If the non-operation of the electric motor 41 is not set in S15, the electric motor 41 is driven as a starter, and fuel is supplied by the fuel injection device 40b and ignited by the ignition device 40c to drive the engine 40. If the non-operation of the electric motor 41 is set in S15, the engine 40 is driven without driving the electric motor 41. Also, if the target rotation speed of the engine 40 at the time of restart is set higher than normal in S17, drive control reflecting this is performed.

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

S34 to S37 are processes related to the control of the engine 40 speed during a predetermined period from the start of the restart. In the case of restarting with the manual transmission 42 in the in-gear state, in this embodiment, the restart condition requires the opening of the throttle 52 (S23). Here, the rider may want to immediately start the vehicle 10, or may want to restart the engine 40 for the time being and wait for the start. If the rider's intention is to restart the engine 40 for the time being, simply increasing the engine 40 speed in proportion to the rider's operation of the throttle grip 80 may cause the engine 40 to rev up to a high speed against the rider's intention, and the rider may be startled by the noise, which may cause the rider to feel uncomfortable.

Therefore, in this embodiment, if a closing operation of the throttle 52 is detected for a predetermined period of time after the start of the restart, the engine 40 is driven at a reduced idling speed to reflect the rider's intention to restart the engine 40 for the time being. On the other hand, if a closing operation is not detected, the engine 40 is increased in speed according to the amount of operation (opening degree) to reflect the rider's intention to start moving immediately. This makes it possible to control the restart of the engine 40 in accordance with the rider's intention.

In S34, the detection result of the throttle operation sensor 110 is obtained. In S35, based on the detection result obtained in S34, it is determined whether or not a closing operation of the throttle 52 has been detected. If a closing operation has been detected, the process proceeds to S33, and if a closing operation has not been detected, the process proceeds to S36.

In S33, the engine 40 is driven at idling speed. In the case of restarting with the manual transmission 42 in gear, if the opening operation of the throttle 52 is detected and restart of the engine 40 is started, and then a closing operation (operation of the throttle grip 80 to return) is detected, the operation of the engine 40 is restricted to idling speed by reducing the amount of fuel supply, etc., even if the throttle 52 is open at that time. This reflects the rider's intention to restart the engine 40 for the time being. After S33, normal control of the engine 40 is started, and if the throttle 52 is opened, the output of the engine 40 is increased in proportion to the amount of operation.

In S36, based on the detection result obtained in S34, the engine 40 is driven at a speed corresponding to the opening operation amount (opening degree) of the throttle 52. This can reflect the rider's intention to start the vehicle 10 immediately. S37 determines whether a specified time (e.g., 3 seconds) has elapsed since the restart initiation in S31. If not, the process returns to S34 and monitors the closing operation of the throttle 52. If the time has elapsed, normal control of the engine 40 is started.

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

1. The saddle-type vehicle (10) of the above embodiment is
An engine (40);
a manual transmission (42) connected to the engine (40) via a clutch (43) for changing the speed of rotation of the engine (40) and outputting the rotation;
a throttle operator (80) capable of adjusting an opening degree of a throttle (52) of the engine (40);
a clutch operator (86) capable of engaging and disengaging the clutch (43);
a throttle operation detection means (110) for detecting a rider's operation of the throttle operator (80);
a clutch operation detection means (111) for detecting an operation of the clutch operator (86) by a rider;
a control means (100) for controlling the automatic stopping and restarting of the engine (40);
A saddle-type vehicle (10) comprising:
The control means (100)
restarting the engine (40) under at least the condition that, when the manual transmission (42) is in an in-gear state, the throttle (52) is opened by the throttle operation detection means (110) and the clutch (43) is disengaged by the clutch operation detection means (111); and
If the throttle operation detection means (110) detects a closing operation of the throttle (52) within a predetermined period from the start of restart, the engine (40) is driven at an idling speed, and if the throttle operation detection means (110) does not detect a closing operation of the throttle (52), the engine (40) is driven at a speed corresponding to the amount of operation detected by the throttle operation detection means (110).
According to this embodiment, when the throttle is opened and then released, it is presumed that the rider's intention is to restart the engine for the time being, and the engine is driven at an idling speed. On the other hand, when the throttle is not released, it is presumed that the rider intends to start immediately, and the engine is driven at a speed according to the amount of operation. Also, by using the throttle opening operation as a restart trigger, even if the rider wants to start immediately, it is possible to start with the same throttle and clutch operations as during normal starting when the engine is running, and engine stall can be suppressed. Thus, according to this embodiment, it is possible to provide a saddle-type vehicle that allows engine restart control in accordance with the rider's intention.

2. The saddle-type vehicle (10) of the above embodiment is
an electric motor (41) for assisting in starting the engine (40);
a rotation speed detection means (113) for detecting the rotation speed of the engine (40),
When the engine (40) is restarted, the control means (100)
When the detection result of the rotation speed detection means (113) is less than a predetermined rotation speed, the electric motor (41) is driven to assist in restarting the engine (40),
When the rotation speed detection means (113) detects that the rotation speed is equal to or greater than the predetermined rotation speed, the electric motor (41) is not driven.
According to this embodiment, the frequency with which the electric motor is driven can be reduced, thereby reducing the power load.

3. The saddle-type vehicle (10) of the above embodiment is
A brake (83) capable of braking the saddle-ride type vehicle;
a brake operator (84) capable of operating the brake;
A brake operation detection means (112) for detecting an operation of the rider with respect to the brake operator;
A gradient detection means (116) for detecting the gradient of a roadway;
When the manual transmission (42) is in gear and the gradient detection means (116) detects a gradient of a predetermined value or more, the control means (100) restarts the engine (40) under at least the following conditions: the throttle operation detection means (110) detects the opening operation of the throttle (52), the clutch operation detection means (111) detects the disengagement operation of the clutch (43), and the brake operation detection means (112) detects the actuation operation of the brake (83).
According to this embodiment, it is possible to prevent the vehicle from rolling back when the vehicle starts moving, and it is possible to more clearly estimate the rider's intention to start moving.

4. The saddle-type vehicle (10) of the above embodiment is
When restarting the engine (40), the control means (100)
When the gradient detection means (116) detects a gradient equal to or greater than the predetermined value, the engine (40) is driven at a higher rotation speed than when the gradient detection means (116) detects a gradient less than the predetermined value.
According to this embodiment, it is possible to prevent the engine from stalling when the vehicle starts moving on an uphill road, and the vehicle from rolling backward when the vehicle starts moving.

The above describes an embodiment of the invention, but the invention is not limited to the above embodiment, and various modifications and variations are possible within the scope of the gist of the invention.

Claims (4)

An engine (40);
a manual transmission (42) connected to the engine (40) via a clutch (43) for changing the speed of rotation of the engine (40) and outputting the rotation;
a throttle operator (80) capable of adjusting an opening degree of a throttle (52) of the engine (40);
a clutch operator (86) capable of engaging and disengaging the clutch (43);
a throttle operation detection means (110) for detecting a rider's operation of the throttle operator (80);
a clutch operation detection means (111) for detecting an operation of the clutch operator (86) by a rider;
a control means (100) for controlling the automatic stopping and restarting of the engine (40);
A saddle-type vehicle (10) comprising:
The control means (100)
restarting the engine (40) under at least the condition that, when the manual transmission (42) is in an in-gear state, the throttle (52) is opened by the throttle operation detection means (110) and the clutch (43) is disengaged by the clutch operation detection means (111); and
if the throttle operation detection means (110) detects a closing operation of the throttle (52) during a predetermined period from the start of restart, the engine (40) is driven at an idling speed, and if the throttle operation detection means (110) does not detect a closing operation of the throttle (52), the engine (40) is driven at a speed corresponding to the amount of operation detected by the throttle operation detection means (110).
A saddle-type vehicle characterized by the above. A saddle-type vehicle (10) according to claim 1,
an electric motor (41) for assisting in starting the engine (40);
a rotation speed detection means (113) for detecting the rotation speed of the engine (40),
When the engine (40) is restarted, the control means (100)
When the detection result of the rotation speed detection means (113) is less than a predetermined rotation speed, the electric motor (41) is driven to assist in restarting the engine (40),
When the detection result of the rotation speed detection means (113) is equal to or higher than the predetermined rotation speed, the electric motor (41) is not driven.
A saddle-type vehicle characterized by the above. A saddle-type vehicle (10) according to claim 1,
A brake (83) capable of braking the saddle-ride type vehicle;
a brake operator (84) capable of operating the brake;
A brake operation detection means (112) for detecting an operation of the rider with respect to the brake operator;
A gradient detection means (116) for detecting the gradient of a roadway;
When the gradient detection means (116) detects a gradient equal to or greater than a predetermined value while the manual transmission (42) is in gear, the control means (100) restarts the engine (40) on at least the following conditions: an opening operation of the throttle (52) is detected by the throttle operation detection means (110), a disengagement operation of the clutch (43) is detected by the clutch operation detection means (111), and an actuation operation of the brake (83) is detected by the brake operation detection means (112).
A saddle-type vehicle characterized by the above. A saddle-type vehicle (10) according to claim 3,
When restarting the engine (40), the control means (100)
When the gradient detection means (116) detects a gradient equal to or greater than the predetermined value, the engine (40) is driven at a higher rotation speed than when the gradient detection means (116) detects a gradient less than the predetermined value.
A saddle-type vehicle characterized by the above.

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