WO2023053350A1

WO2023053350A1 - Saddle-riding vehicle

Info

Publication number: WO2023053350A1
Application number: PCT/JP2021/036160
Authority: WO
Inventors: 祐輔 ▲浜▼口; 昌志古谷; 善昭塚田; 潤石川; 篤志 ▲高▼▲崎▲; 惇安達; 康弘福吉
Original assignee: 本田技研工業株式会社
Priority date: 2021-09-30
Filing date: 2021-09-30
Publication date: 2023-04-06
Also published as: CN117881596A

Abstract

This saddle-riding vehicle comprises a control means that controls an automatic stop of an engine and a restart after the automatic stop. The control means restarts the engine at least on the condition that a starting operation of a throttle has been detected and a disengage operation of a clutch has been detected while the manual transmission is in gear, and, during a prescribed period after starting the restart, drives the engine at an idling rotation speed when a closing operation of the throttle has been detected, and drives the engine at a rotation speed in accordance with an operating amount when a closing operation of the throttle has not been detected.

Description

straddle-type vehicle

The present invention relates to a straddle-type vehicle.

A straddle-type vehicle with an idle stop function has been proposed. Such a saddle-ride type vehicle is advantageous in terms of improving fuel efficiency because the engine is automatically stopped when the saddle-ride type vehicle stops temporarily while waiting for a signal. Patent Document 1 discloses an idle stop control technique for a straddle-type vehicle equipped with a manual transmission. In the control technique of Patent Document 1, the engine can be automatically stopped when the manual transmission is in gear, and the conditions for restarting the engine are the opening of the throttle and the disengagement of the clutch. As a result, when the engine is restarted after the automatic stop, it is possible to reflect the rider's intention to start while preventing the straddle-type vehicle from jumping out abruptly.

Japanese Patent No. 5750020

After the engine automatically stops, the rider's intention to restart the engine may be that they want to start immediately, or that they want to restart the engine for the time being in preparation for starting. In the latter case, when the engine is driven at high speed, the rider may feel uncomfortable.

An object of the present invention is to provide a straddle-type vehicle capable of restarting the engine in accordance with the rider's intention.

According to the invention,
an engine (40);
a manual transmission (42) that is connected to the engine (40) via a clutch (43) and that changes and outputs the rotation of the engine (40);
a throttle operator (80) capable of adjusting the throttle opening of the engine (40);
a clutch operator (86) capable of operating the clutch (43) on and off;
throttle operation detection means (110) for detecting a rider's operation of the throttle operator (80);
clutch operation detection means (111) for detecting a rider's operation of the clutch operating element (86);
a control means (100) for controlling automatic stop of the engine (40) and restart after automatic stop;
A straddle-type vehicle (10) comprising
The control means (100)
When the manual transmission (42) is in the in-gear state, the opening operation of the throttle (52) is detected by the throttle operation detection means (110), and the clutch operation detection means (111) detects the clutch (52). 43) restarting the engine (40) at least on the condition that the cutoff operation of 43) is detected, and
If the throttle operation detection means (110) detects that the throttle (52) is closed within a predetermined period from the start of the restart, the engine (40) is driven at idling speed, and the throttle operation is detected. If the closing operation of the throttle (52) is not detected by the means (110), the engine (40) is driven at a rotation speed corresponding to the amount of operation detected by the throttle operation detection means (110).
There is provided a straddle-type vehicle characterized by:

According to the present invention, it is possible to provide a straddle-type vehicle capable of restarting the engine in accordance with the rider's intention.

1 is a left side view of a straddle-type vehicle according to an embodiment of the present invention; FIG. FIG. 2 is a top view of the straddle-type vehicle of FIG. 1; FIG. 2 is a block diagram of a control device for the straddle-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; 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;

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. It should be noted that the following embodiments do not limit the invention according to the claims, and not all combinations of features described in the embodiments are essential to the invention. Two or more of the features described in the embodiments may be combined arbitrarily. Also, the same or similar configurations are denoted by the same reference numerals, and redundant explanations are omitted.

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

The vehicle 10 has a double cradle type vehicle body frame 12 . This 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 left and right from the head pipe 14 and extend rearward in a gently descending rearward direction, and then extend downward via a curved portion 16a. The down frame 18 branches left and right from the head pipe 14 and extends obliquely rearward and downward under the main frame 16 , and then extends substantially horizontally rearward via a curved portion 18 a to reach the rear end portion of the main frame 16 . Connected.

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 reinforcing stays 24. The pair of left and right seat frames 20 extend rearward and slightly upward from the vicinity of the curved portion 16 a of the pair of left and right main frames 16 . A pair of left and right pivot plates 22 are arranged near the rear end of the main frame 16 . A pair of left and right reinforcing stays 24 are connected to the seat frame 20 by extending obliquely rearward from the vicinity of the pivot plate 22 of the main frame 16 . A pivot 26 is provided on the pair of left and right pivot plates 22 .

A pair of left and right front forks 28 are rotatably supported by the head pipe 14, and a handlebar 32 for steering 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 for illuminating the front of the vehicle 10 and a pair of left and right front winkers 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.

An engine 40 and a manual transmission 42 are provided between the main frame 16 and the down frame 18 . The engine 40 is, for example, a single-cylinder four-stroke DOHC engine, and includes a throttle 52 that adjusts the amount of intake air, a fuel injection device (injector) 40b that injects fuel, and an ignition device that ignites the air-fuel mixture in the combustion chamber. 40c. A fuel tank 44 containing fuel to be supplied to the engine 40 is attached 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 in front of the down frame 18 . is located behind.

The electric motor 41 is connected to the engine 40 . The electric motor 41 functions as a starter that starts the engine 40 and 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 a clutch 43, and outputs the rotation of the engine 40 that is transmitted to the rear wheels WR. The manual transmission 42 is a constant-mesh transmission that can be switched, for example, to a gear ratio of 1st to 6th gears or to a neutral state in accordance with the rider's shift operation on the gear change pedal 88 . The state in which one of the gear ratios of 1st to 6th is selected is also called in-gear. A gear change pedal 88 is a shift operator provided in front of the left step 64 so that it can be operated by the rider. By placing the left foot on the left step 64 and operating the gear change pedal 88 with the left foot, the state of the manual transmission 42 is switched. The clutch 43 is, for example, a wet multi-plate coil spring type manual clutch that connects or disconnects transmission of driving force between the engine 40 and the manual transmission 42 .

A swing arm 56 is pivotally supported by the pair of left and right pivot plates 22 via a pivot 26 so as to be capable of swinging in a substantially vertical direction. 58 is interposed. A rear wheel WR, which is a drive wheel, is rotatably supported at the rear end of the swing arm 56 . The driving force of engine 40 is transmitted to rear wheels WR via manual transmission 42 and 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.

Steps

64 and 66 for a rider and a passenger are provided at front and rear portions of the pair of left and right step holders 62, respectively. Installed left and right.

A seat 68 for the rider and fellow passenger to sit on (straddle) is attached behind the fuel tank 44 and above the seat frame 20. The seat 68 includes a rider seat 68a on which the rider rides and a passenger seat 68a. is a tandem seat consisting of a passenger seat 68b on which . A pair of right and left grab bars 70 and a rear blinker 72 are attached to the rear portion of the seat frame 20 to be gripped by a fellow passenger. 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 side of the handlebar 32 so as to be rotatable with respect 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 this embodiment, the throttle grip 80 and the throttle 52 are physically connected by a mechanical wire. However, the throttle grip 80 and the throttle 52 may not be physically connected, and a throttle-by-wire system may be adopted in which the rider's throttle operation (accelerator operation) is converted into an electric signal to control the throttle.

A brake lever 82 is provided in front of the throttle grip 80 on the handlebar 32 . The brake lever 82 is provided so as to be operable by the rider, and is a brake operator capable of operating a front wheel brake 81 that applies a braking force to the front wheels WF of the vehicle 10 . When the rider operates the brake lever 82 with his or her right hand, the front wheel brake 81 provided on the front wheel WF is actuated to apply a 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 in front of the step 64 on the right side. The foot brake pedal 84 is provided so as to be operable by the rider, and is a brake operator capable of operating a rear wheel brake 83 that applies a braking force to the rear wheels WR of the vehicle 10 . By placing the right foot on the right step 64 and operating the foot brake pedal 84 with the right foot, the rider operates the rear wheel brake 83 provided on the rear wheel WR to apply braking force to the rear wheel WR. The rear wheel brake 83 is, for example, a disc brake.

In addition, the handlebar 32 is provided with a clutch lever 86 in front of the left end of the handlebar 32 . The clutch lever 86 is a clutch operating element that is operable by the rider and that allows the clutch 43 to be connected and disconnected. When the rider pulls the clutch lever 86, the clutch 43 is disengaged, and when released, it is engaged.

<Control device>
Mainly referring to FIG. 3, the control device of the vehicle 10 will be described. Vehicle 10 includes a control unit (ECU) 100 . The control unit 100 includes a processor represented by a CPU, a storage device such as a semiconductor memory, an input/output interface with an external device, a sensor signal processing circuit, and an actuator drive circuit. The storage device stores programs executed by the processor, data used for processing by the processor, and the like. A plurality of processors and storage devices may be provided.

The control unit 100 acquires detection results from various sensors 110 to 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 on the throttle grip 80, and may be a sensor that is provided on the throttle grip 80 and detects the amount of rotation of the throttle grip 80, or is provided on the throttle 52, A sensor that detects the throttle opening may be used. The clutch operation sensor 111 is a sensor that detects a rider's operation of the clutch lever 86, and may be a sensor that is provided on the clutch lever 86 and detects that the lever is pulled (disengagement operation). A sensor may be provided to detect the rotation of the arm of the clutch 43 .

The brake operation sensor 112 is a sensor that detects the rider's operation of the foot brake pedal 84 . An engine speed sensor 113 is a sensor that detects the speed of the engine 40 . The shift position sensor 114 is a sensor that detects the state of the manual transmission 42 (one of 1st to 6th speed 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 wheels 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 due to waiting for a signal, and the engine 40 is restarted when it is estimated that the vehicle 10 will start moving after the automatic stop. 4 to 7 are flowcharts showing examples of processing executed by the processor of the control unit 100 regarding idle stop control.

FIG. 4 shows an example of processing related to the automatic stop of the engine 40. A detection result of each sensor is obtained in S1. In S2, it is determined whether or not a predetermined idling stop condition is established based on the detection result obtained in S1. If it is determined that the idle stop condition is satisfied, the process proceeds to S3.

The idle stop conditions include, for example, at least that the vehicle speed is equal to or lower than a specified vehicle speed (eg, 3 km/h) and that the opening operation of the throttle 52 by the rider is not detected for a specified period of time (eg, 3 seconds). be able to. In addition, when the manual transmission 42 is in gear, it is detected that the rider disengages the clutch 43 for a specified time (for example, 3 seconds). For example, the disengagement operation of the clutch 43 by the rider was not detected for a period of time (for example, 3 seconds). In addition, the headlights 36 are turned off, the rider has previously permitted the execution of idle stop control (an idle stop switch is provided and the rider has turned it on), etc. good.

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 the ignition by the ignition device 40c.

FIG. 5 shows an example of processing when the engine 40 is restarted after an automatic stop. The detection result of each sensor is acquired in S11. In S12, the details of the process of determining whether or not 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, settings related to restarting of the engine 40 are performed.

In S14, it is determined whether or not the electric motor 41 should be driven as a starter to assist the restart when the engine 40 is restarted. When the engine 40 is started and restarted, the electric motor 41 is basically driven as a starter to assist the starting of the engine 40 .

However, after the engine 40 has automatically stopped, the restart condition may be met while the vehicle 10 is coasting before it stops. For example, when a rider is driving slowly toward an intersection due to a red light, the light soon turns green, causing the vehicle 10 to accelerate without stopping. In S14, based on the detection result of the engine speed sensor 113 acquired in S11, it is determined whether or not the speed of the engine 40 is equal to or higher than a threshold value (for example, 600 rpm). If there is, proceed to S16. If the rotation speed of the engine 40 is equal to or higher than the threshold, the engine 40 can be restarted without driving the electric motor 41 . Therefore, in S15, it is set not to operate the electric motor 41 as a starter when the engine 40 is restarted. Since the automatic stop of the engine 40 also stops power generation by the electric motor 41, there is a concern that the amount of electricity stored in the battery of the vehicle 10 will decrease. can be suppressed.

In S16, 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 upward gradient equal to or greater than a threshold. If the upward gradient is greater than or equal to the threshold, the process proceeds to S17, and if the upward gradient is less than the threshold, the process proceeds to S18. In S17, the target rotation speed of the engine 40 at restart is set higher than normal. For example, the idling speed is set to 1.2 times, or the speed of the engine 40 is set to be higher than normal with respect to the rider's throttle operation. Since the vehicle 10 of this embodiment includes the manual clutch 43, it is possible to prevent the engine 40 from stalling and the vehicle 10 from moving backward when starting the vehicle 10 on an uphill road.

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

<Restart determination processing>
An example of the restart determination process of S13 will be described with reference to FIG. In S21, based on the detection result of the clutch operation sensor 111 obtained in S11, it is determined whether or not the disconnection operation of the clutch 43 by the rider has been detected. It is determined that the engine continues to stop (the restart condition is not met).

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 acquired in S11. If in gear, proceed to S23, and if in neutral, proceed to S26. , it is determined that the restart condition is satisfied. 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 condition of this detection. 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 by the rider (rotating operation of the throttle grip 80) has been detected. If it is not detected, the process advances to S27 to determine that the stop is maintained (the restart condition is not met). When the manual transmission 42 is in the in-gear state, not only the disengagement operation of the clutch 43 but also the opening operation of the throttle 52 are included in the restart condition, so that the restart can be performed when the rider intends to start immediately. The start-up of the output of the engine 40 is improved, and the stall of the engine 40 can be prevented.

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 upward gradient equal to or greater than a threshold. If the upward gradient is equal to or greater than the threshold, the process proceeds to S25, and if the upward gradient is less than the threshold, the process proceeds to S26 and determines that the restart condition is satisfied. The threshold here may be the same as the threshold in S16, or may be different. In S25, based on the detection result of the brake operation sensor 112 obtained in S11, it is determined whether or not the operation of the rear wheel brake 83 has been detected by the rider. If no actuation operation is detected, the process proceeds to S27 to determine that the stop is maintained (the restart condition is not met). By including the operating operation of the rear wheel brake 83 in the restart condition, it is possible to prevent the vehicle 10 from moving backward on an uphill road when starting.

It should be noted that when the manual transmission 42 is in neutral, detection of operation of the rear wheel brake 83 is not included in the restart conditions. This is because when the manual transmission 42 is in neutral, the shift operation of the manual transmission 42 is then performed by the left foot. When the manual transmission 42 is in neutral, the restart condition may include detection of operation of the front wheel brake 81. In this case, a sensor that detects the rider's operation of the brake lever 82 may be provided.

In this embodiment, when the manual transmission 42 is in gear, the clutch 43 is disengaged and the throttle 52 is opened. , may be excluded from the restart conditions for the rear wheel brake 83, or other conditions may be added to the restart conditions.

<Restart processing>
The restart processing of S18 will be described with reference to FIG. 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 the 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 S<b>15 , the engine 40 is driven without driving the electric motor 41 . Further, if the target rotation speed of the engine 40 at the time of restarting is set higher than normal in S17, drive control reflecting this is performed.

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

Steps S34 to S37 are processes related to the rotation speed control of the engine 40 during a predetermined period from the start of restart. In the case of restarting with the manual transmission 42 in the in-gear state, in this embodiment, opening operation of the throttle 52 is requested as a condition for restarting (S23). Here, the rider may want to start the vehicle 10 immediately, 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, simply increasing the rotation speed of the engine 40 in proportion to the rider's operation amount of the throttle grip 80 will cause the engine 40 to restart contrary to the rider's intention. is blown up to high rotation, and the noise may startle the rider, giving the rider a sense of discomfort.

Therefore, in this embodiment, when the closing operation of the throttle 52 is detected for a predetermined period from the start of restarting, the rotation speed of the engine 40 is suppressed to the idling rotation speed, and the engine 40 is restarted for the time being. It reflects the intention of the rider who wants to start. 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), thereby reflecting the rider's intention to start immediately. As a result, the engine 40 can be restarted in accordance with the rider's intention.

At 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 the closing operation of the throttle 52 has been detected. If the closing operation is detected, the process proceeds to S33, and if the closing operation is not 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 the in-gear state, after the opening operation of the throttle 52 is detected and the restart of the engine 40 is started, the closing operation (operation on the side of returning the throttle grip 80) is detected. If so, even if the throttle 52 is open at that time, the drive of the engine 40 is restricted to the idling speed by reducing the amount of fuel supply or the like. 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.

At S36, the engine 40 is driven at a rotation speed corresponding to the opening operation amount (opening degree) of the throttle 52 based on the detection result acquired at S34. The rider's intention to start the vehicle 10 immediately can be reflected. In S37, it is determined whether or not a specified time (for example, 3 seconds) has passed since the start of restarting in S31. If it has not passed, the process returns to S34 to monitor the closing operation of the throttle 52 . If it has passed, normal control of the engine 40 is started.

<Summary of embodiment>
The above embodiment discloses at least the following straddle-type vehicle.

1. The straddle-type vehicle (10) of the above-described embodiment includes:
an engine (40);
a manual transmission (42) that is connected to the engine (40) via a clutch (43) and that changes and outputs the rotation of the engine (40);
a throttle operator (80) capable of adjusting the throttle opening of the engine (40);
a clutch operator (86) capable of operating the clutch (43) on and off;
throttle operation detection means (110) for detecting a rider's operation of the throttle operator (80);
clutch operation detection means (111) for detecting a rider's operation of the clutch operating element (86);
a control means (100) for controlling automatic stop of the engine (40) and restart after automatic stop;
A straddle-type vehicle (10) comprising
The control means (100)
When the manual transmission (42) is in the in-gear state, the opening operation of the throttle (52) is detected by the throttle operation detection means (110), and the clutch operation detection means (111) detects the clutch (52). 43) restarting the engine (40) at least on the condition that the cutoff operation of 43) is detected, and
If the throttle operation detection means (110) detects that the throttle (52) is closed within a predetermined period from the start of the restart, the engine (40) is driven at idling speed, and the throttle operation is detected. If the closing operation of the throttle (52) is not detected by the means (110), the engine (40) is driven at a rotation speed corresponding to the amount of operation detected by the throttle operation detecting means (110).
According to this embodiment, when the throttle is opened and released, it is assumed that the rider's intention is to restart the engine for the time being, and the engine is driven at the idling speed. On the other hand, if the throttle is not returned, it is assumed that the rider intends to start the vehicle immediately, and the engine is driven at the rotational speed corresponding to the operation amount. In addition, by using the opening operation of the throttle as a trigger for restarting, even if the rider wants to start immediately, it is possible to start by operating the throttle and clutch in the same way as when starting normally when the engine is running. Engine stall can be suppressed. As described above, according to the present embodiment, it is possible to provide a straddle-type vehicle capable of restarting the engine in accordance with the rider's intention.

2. The straddle-type vehicle (10) of the above-described embodiment includes:
an electric motor (41) that assists in starting the engine (40);
Rotational speed detection means (113) for detecting the rotational speed of the engine (40),
When the engine (40) is restarted, the control means (100)
if 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 restarting of 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.
According to this embodiment, the power load can be reduced by reducing the frequency of driving the electric motor.

3. The straddle-type vehicle (10) of the above-described embodiment includes:
a brake (83) capable of braking the straddle-type vehicle;
a brake operator (84) capable of operating the brake;
brake operation detection means (112) for detecting a rider's operation of the brake operator;
and a gradient detection means (116) for detecting the gradient of the road,
When the manual transmission (42) is in the in-gear state and the slope detection means (116) detects a slope equal to or greater than a predetermined value, the control means (100) controls the throttle operation detection means (110). ) detects the opening operation of the throttle (52), the clutch operation detection means (111) detects the disconnection operation of the clutch (43), and the brake operation detection means (112) detects the brake (83). ) is detected, the engine (40) is restarted.
According to this embodiment, it is possible to suppress the vehicle from moving backward when starting the vehicle, and to more clearly estimate the rider's intention to start.

4. The straddle-type vehicle (10) of the above-described embodiment includes:
When the control means (100) restarts the engine (40),
When the gradient detecting means (116) detects a gradient equal to or greater than the predetermined value, the engine (40) is driven at a higher rotational speed than when a gradient smaller than the predetermined value is detected.
According to this embodiment, it is possible to prevent the engine from stalling when starting the vehicle on an uphill road and preventing the vehicle from reversing when starting the vehicle.

Although the embodiments of the invention have been described above, the invention is not limited to the above embodiments, and various modifications and changes are possible within the scope of the gist of the invention.

Claims

an engine (40);
a manual transmission (42) that is connected to the engine (40) via a clutch (43) and that changes and outputs the rotation of the engine (40);
a throttle operator (80) capable of adjusting the throttle opening of the engine (40);
a clutch operator (86) capable of operating the clutch (43) on and off;
throttle operation detection means (110) for detecting a rider's operation of the throttle operator (80);
clutch operation detection means (111) for detecting a rider's operation of the clutch operating element (86);
a control means (100) for controlling automatic stop of the engine (40) and restart after automatic stop;
A straddle-type vehicle (10) comprising
The control means (100)
When the manual transmission (42) is in the in-gear state, the opening operation of the throttle (52) is detected by the throttle operation detection means (110), and the clutch operation detection means (111) detects the clutch (52). 43) restarting the engine (40) at least on the condition that the cutoff operation of 43) is detected, and
If the throttle operation detection means (110) detects that the throttle (52) is closed within a predetermined period from the start of the restart, the engine (40) is driven at idling speed, and the throttle operation is detected. If the closing operation of the throttle (52) is not detected by the means (110), the engine (40) is driven at a rotation speed corresponding to the amount of operation detected by the throttle operation detection means (110).
A straddle-type vehicle characterized by:
A straddle-type vehicle (10) according to claim 1,
an electric motor (41) that assists in starting the engine (40);
Rotational speed detection means (113) for detecting the rotational speed of the engine (40),
When the engine (40) is restarted, the control means (100)
if 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 restarting of the engine (40);
If 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 straddle-type vehicle characterized by:
A straddle-type vehicle (10) according to claim 1,
a brake (83) capable of braking the straddle-type vehicle;
a brake operator (84) capable of operating the brake;
brake operation detection means (112) for detecting a rider's operation of the brake operator;
and a gradient detection means (116) for detecting the gradient of the road,
When the manual transmission (42) is in the in-gear state and the slope detection means (116) detects a slope equal to or greater than a predetermined value, the control means (100) controls the throttle operation detection means (110). ) detects the opening operation of the throttle (52), the clutch operation detection means (111) detects the disconnection operation of the clutch (43), and the brake operation detection means (112) detects the brake (83). ) restarting the engine (40), at least on the condition that an activation operation of
A straddle-type vehicle characterized by:
A straddle-type vehicle (10) according to claim 3,
When the control means (100) restarts the engine (40),
When the slope detection means (116) detects a slope equal to or greater than the predetermined value, the engine (40) is driven at a higher rotation speed than when a slope lower than the predetermined value is detected.
A straddle-type vehicle characterized by: