JP2016156347A - Idling stop control device for motorcycle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an idling stop control device for a motorcycle including a manual transmission, for enabling idling stop of an engine with a series of rider's operations in connection with stopping operation.SOLUTION: An idling stop control device 36 is provided for a motorcycle 1 which includes an engine 3, a manual transmission 22, and a clutch mechanism 31 for connecting (engaging)/disconnecting (disengaging) power transmission from the engine 3 to the manual transmission 22. It includes a crank rotation sensor 59 for detecting the speed of the engine 3, and an idling stop control part 68 for making the engine 3 transition from an operating condition into an idling stop condition when the speed of the engine 3 detected by the crank rotation sensor 59 is lower than a required engine speed Nstop which is preset to be a value lower than a normal idling engine speed for starting idling stop.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an idling stop control device for a motorcycle.

  An idling stop control device for a motorcycle that determines an operating state of an engine when an idle control switch is operated, stops the engine if the engine is operating, and starts the engine if the engine is stopped. It is known (see, for example, Patent Document 1).

JP 2013-83243 A

  Since the conventional idling stop control device requires the operation of the idle control switch at the time of idling stop and restart of the engine, it can provide an intentional idling stop of the passenger.

  By the way, in a motorcycle equipped with a manual transmission, a brake lever or a clutch lever is operated when the traveling motorcycle is stopped and when the motorcycle is started.

  Therefore, when applying a conventional idling stop control device to a motorcycle equipped with a manual transmission, the occupant operates the idle control switch while operating the brake lever or clutch lever to stop the engine idling. You have to do it, and you have to use your fingers.

  In view of this, the present invention proposes an idling stop control device for a motorcycle equipped with a manual transmission, in which the engine can be idling stopped by a series of passenger operations related to the stopping operation.

  In order to solve the above problems, an idling stop control device for a motorcycle according to the present invention includes an engine, a manual transmission, and a clutch mechanism that connects (fastens) or shuts (releases) power transmission from the engine to the manual transmission. Including a crank rotation sensor for detecting the engine speed, and the engine speed detected by the crank sensor being set in advance to a value lower than a normal idling speed. And an idling stop control unit that causes the engine to transition from an operating state to an idling stop state when the engine speed falls below a rotational speed (threshold value) for starting the idling stop.

  ADVANTAGE OF THE INVENTION According to this invention, in the motorcycle provided with a manual transmission, the idling stop control apparatus of the motorcycle which can make an engine idling stop by a series of operation of the passenger related to the operation | movement of stopping can be provided.

1 is a plan view showing a motorcycle to which an idling stop control device according to an embodiment of the present invention is applied. The block diagram which shows the idling stop control apparatus which concerns on embodiment of this invention. The timing chart which shows progress from the idling stop control by the idling stop control apparatus which concerns on embodiment of this invention to restart control. The flowchart which shows the idling stop start control by the idling stop control apparatus which concerns on embodiment of this invention. The flowchart which shows the restart control by the idling stop control apparatus which concerns on embodiment of this invention.

  Embodiments of an idling stop control device for a motorcycle according to the present invention will be described below with reference to FIGS.

  FIG. 1 is a plan view showing a motorcycle to which an idling stop control device according to an embodiment of the present invention is applied.

  In the present embodiment, front / rear, upper / lower / left / right expressions are based on the passenger of the motorcycle 1.

  As shown in FIG. 1, a motorcycle 1 according to the present embodiment is disposed in front of a vehicle body frame 2 that extends in the front and rear of the vehicle, an engine 3 that is an internal combustion engine mounted on the vehicle body frame 2, and the vehicle body frame 2. A steering mechanism 5 that can be steered in the left-right direction of the vehicle, a front wheel 6 that is disposed in front of the vehicle body frame 2 and is rotatably supported by the steering mechanism 5, and a vehicle wheel that is disposed behind the vehicle body frame 2 in the vertical direction of the vehicle. A rear wheel suspension device 7 that is swingably supported by the vehicle, a rear wheel 8 that is disposed behind the vehicle body frame 2 and is rotatably supported by the rear wheel suspension device 7, and an engine control that controls the operation of the engine 3. The apparatus 11 is provided.

  The vehicle body frame 2 includes a head pipe 12 disposed at the foremost portion of the vehicle body frame 2, a pair of left and right main frames 13 branching left and right from the head pipe 12 and extending obliquely backward and downward, and a pair of left and right main frames 13 respectively. A pair of left and right pivot frames 15 that are connected to the ends and hang downward are provided, and a rear frame 16 that is connected to the rear ends of each of the pair of left and right main frames 13 and extends gently rearward and upward.

  The head pipe 12 is a steering center of the steering mechanism 5 and supports the steering mechanism 5 on the vehicle body frame 2.

  The left and right main frames 13 extend rearward from the front end connected to the head pipe 12 while expanding to the same extent as the lateral width of the engine 3. The left and right main frames 13 support an air cleaner box 17 above the front half and a fuel tank 18 above the rear half.

  The pair of left and right pivot frames 15 includes a pivot shaft 19. The pivot shaft 19 is installed at a substantially central portion of the pair of left and right pivot frames 15.

  The left and right main frames 13 and the pair of left and right pivot frames 15 hold and support the engine 3.

  The engine 3 is, for example, a 4-cycle parallel multi-cylinder internal combustion engine, specifically, a parallel 4-cylinder engine. The engine 3 occupies the lower center part of the motorcycle 1. The intake system of the engine 3 is connected to an air cleaner box 17. The exhaust system of the engine 3 reaches a pair of exhaust mufflers 21 disposed on the left and right of the rear half of the vehicle body via an exhaust pipe (not shown) that passes under the engine 3.

  A manual transmission 22 is provided behind the engine 3. The manual transmission 22 is interposed between the engine 3 and the rear wheel 8, shifts the output (rotation) of the engine 3 and outputs it to the rear wheel 8.

  The rear frame 16 is disposed in the rear half of the vehicle and supports a passenger seat 23.

  The steering mechanism 5 is supported by the head pipe 12 and can be steered left and right around the head pipe 12. The steering mechanism 5 includes a pair of left and right front forks 25, a front fender 26 that is provided on the front forks 25 and covers the front wheel 6, and a handle 27 that is provided on the top of the steering mechanism 5.

  The front fork 25 includes a suspension mechanism (not shown) that grounds the front wheel 6. The right handle 27 includes a throttle grip 28. Further, a front wheel brake lever 29 for operating the brake of the front wheel 6 is provided in front of the right handle 27. On the other hand, a clutch lever 32 that operates a clutch mechanism 31 that connects or disconnects transmission of power between the engine 3 and the manual transmission 22 is provided in front of the left handle 27.

  The front wheel 6 is rotatably supported by front wheel shafts (not shown) installed at the lower ends of the pair of left and right front forks 25.

  The rear wheel suspension device 7 swings around the pivot shaft 19. The rear wheel suspension device 7 includes a swing arm 33 extending from the front end portion supported by the pivot shaft 19 to the rear of the vehicle, and a rear cushion unit 35 installed between the swing arm 33 and the vehicle body frame 2. .

  The swing arm 33 supports the rear wheel 8 so as to be swingable up and down with the pivot shaft 19 as a swing center.

  The rear cushion unit 35 buffers a force transmitted from the rear wheel 8 to the vehicle body frame 2.

  The rear wheel 8 is rotatably supported by a rear wheel shaft (not shown) provided at the rear end portion of the swing arm 33. The rear wheel 8 includes a driven sprocket (not shown). The rear wheel 8 obtains driving force from the engine 3 by a drive chain (not shown) wound around the driven sprocket.

  The engine control device 11 controls steady operation of the engine 3. The engine control device 11 also serves as a control unit of the idling stop control device 36 that controls idling stop of the engine 3 and restart of the engine 3 during idling stop.

  Further, the motorcycle 1 includes a front cowling 37 that covers both the left and right sides of the head pipe 12 and the steering mechanism 5 from the front of the head pipe 12, a side cover 38 that covers the lower space of the fuel tank 18 from both the left and right sides of the vehicle, A seat cowling 39 covering the rear half of the rear frame 16. A rear fender 41 is provided below the rear end of the seat cowling 39.

  Next, the idling stop control device 36 will be described in detail.

  FIG. 2 is a block diagram showing an idling stop control device according to the embodiment of the present invention.

  As shown in FIG. 2, the idling stop control device 36 of the motorcycle 1 according to the present embodiment also serves as the engine control device 11, and an ignition key switch 45 as a main switch and a start button switch 46 that starts the engine 3. And a kill switch 47 for forcibly stopping the operation of the engine 3. The ignition key switch 45 is disposed at the upper center of the handle 27. The start button switch 46 and the kill switch 47 are disposed on the right-hand side end portion of the handle 27.

  The idling stop control device 36 includes an indicator 48 that displays various information such as a traveling speed. The indicator 48 is disposed on the upper side near the center of the handle 27.

  The idling stop control device 36 includes a fuel injection device 49 that injects gasoline into the engine 3, an ignition device 51 that ignites the air-fuel mixture in the engine 3, a battery 52 that supplies power to the electrical system of each part, A starter motor 53 that starts the engine 3 with electric power supplied from the battery 52 and a starter motor relay 55 that opens and closes an electric path connecting the battery 52 and the starter motor 53 are provided.

  The idling stop control device 36 includes a throttle position sensor 56 that detects a twist amount (throttle opening) of the throttle grip 28, and a vehicle speed sensor 57 that detects a traveling speed of the vehicle. The vehicle speed sensor 57 generates a pulse signal a plurality of times, for example, 40 times per one rotation of the rear wheel 8 to detect the traveling speed of the vehicle.

  The idling stop control device 36 includes a water temperature sensor 58 that detects the coolant temperature of the engine 3, a crank rotation sensor 59 that detects the number of revolutions of the engine 3, and a side stand that supports the stopped motorcycle in an upright state. A side stand switch 61 for detecting the state, a clutch position switch 62 for detecting whether or not the clutch lever 32 for operating the clutch mechanism 31 is operated, and at least one of the front wheel brake lever 29 and the rear wheel brake pedal 63 is operated. A brake position switch 65 for detecting whether or not the gear is in position, and a gear position sensor 66 for detecting the shift position of the manual transmission 22.

  The manual transmission 22 includes, for example, a shift position from the first stage to the sixth stage and a neutral position (neutral position) where power transmission from the engine 3 to the rear wheel 8 is not performed. The gear position sensor 66 detects whether the manual transmission 22 is in the first to sixth gear positions or the neutral position.

  The idling stop control device 36 includes an ignition key switch 45, a start button switch 46, a kill switch 47, a throttle position sensor 56, a vehicle speed sensor 57, a water temperature sensor 58, a crank rotation sensor 59, a side stand switch 61, a clutch position switch 62, It receives various sensors including a brake position switch 65 and a gear position sensor 66, and detection signals from the various switches, and controls the vehicle in an integrated manner. The idling stop control device 36 refers to various control processing programs and various parameters stored in advance in the ROM so as to be readable, and is executed by the CPU using the RAM as a work area.

  As a specific control process, first, the idling stop control device 36 closes the starter motor relay 55 and supplies power from the battery 52 to the starter motor 53 when the ignition key switch 45 is ON and the start button switch 46 is pushed down. And start the engine 3. In addition, as a precondition for starting control of the engine 3, it is detected that the side stand is being stored by the side stand switch 61, and that the kill switch 47 is OFF, that is, the start of the engine 3 is not prohibited. Something needs to be met.

  The engine control device 11 (idling stop control device 36) starts the engine 3 and then injects the gasoline amount to be injected into the engine 3 in accordance with the twist amount of the throttle grip 28 detected by the throttle position sensor 56. Adjust at 49 to adjust the running speed. While the motorcycle 1 is traveling, the engine control device 11 (idling stop control device 36) causes the indicator 48 to display the traveling speed detected by the vehicle speed sensor 57.

  The idling stop control device 36 includes an idling stop mode selection switch 67 that switches whether to perform idling stop control of the engine 3. When the idling stop mode selection switch 67 is turned on, the idling stop control device 36 transitions to an idling stop mode for performing idling stop control of the engine 3. On the other hand, when the idling stop mode selection switch 67 is turned OFF, the idling stop control device 36 does not perform the idling stop control of the engine 3 and shifts to the normal mode in which the idling of the engine 3 is continued. Note that if the idling stop mode selection switch 67 is turned off when the engine 3 is in the idling stop state by the idling stop control device 36, the control related to idling stop is completed, so the restart control is not performed and the engine 3 The stop is maintained. When the engine 3 is restarted, a normal starting operation is performed.

  The idling stop mode selection switch 67 may be disposed on the right hand side end portion of the handle 27 together with, for example, the throttle grip 28, the start button switch 46, and the kill switch 47, or the left hand side of the handle 27 on which the clutch lever 32 is disposed. You may arrange | position at the edge part.

  When the idling stop mode is selected, the idling stop control device 36 stops the engine 3 idling when the engine 3 is in operation (operating state) and the idling stop condition is satisfied. The engine 3 during idling stop (idling stop state) is temporarily stopped in a state where it can be restarted immediately.

  Further, the idling stop control device 36 immediately restarts the engine 3 when the engine is in the idling stop state and the engine restart condition is satisfied.

  The idling stop control device 36 includes an idling stop control unit 68 that causes the engine 3 to transition from an operating state to an idling stop state based on an intentional operation to start idling stop by a rider of the motorcycle 1, and boarding of the motorcycle 1. And a restart control unit 69 that restarts the engine 3 from the idling stop state to the operating state based on an intentional operation to end (restart) the idling stop by the person. That is, the idling stop control device 36 determines that the specific operation by the occupant of the motorcycle 1 or the specific vehicle state is the occupant's idling stop start request, and changes the engine 3 from the driving state to the idling stop state. Let Further, the idling stop control unit 68 determines that the specific operation by the occupant of the motorcycle 1 or the state of the specific vehicle is a request for ending (restarting) the idling stop of the occupant, and sets the engine 3 in the idling stop state. Restart from the starting state.

  The intentional operation (specific operation) for starting the idling stop is performed by operating the clutch lever 32 of the stopped motorcycle 1 and connecting the engine 3 and the manual transmission 22 through the clutch mechanism 31 in a half-connected state (so-called half-operation). In the clutch state), the operation is to lower the rotational speed of the engine 3 below a preset idling stop required rotational speed Nstop. Note that at least one operation of the front wheel brake lever 29 or the rear wheel brake pedal 63 may be added to this operation. The state of the specific vehicle is a state in which the rotational speed of the engine 3 is lower than the idling stop required rotational speed Nstop which is a preset threshold value. The idling stop required rotational speed Nstop is set lower (for example, 800 rpm) than a predetermined idling rotational speed (for example, 1000 rpm) in a normal operation state. When the engine speed (rotation speed) detected by the crank rotation sensor 59 is lower than the normal idling speed and lower than a preset idling stop required speed Nstop, the idling stop control unit 68 performs idling of the passenger. The stop request is determined, and the engine 3 is changed from the operating state to the idling stop state.

  The intentional operation for restarting the engine 3 is an operation on the clutch mechanism 31 detected by the clutch position switch 62, that is, an operation of the clutch lever 32. When the clutch lever 32 is operated, the MT vehicle is a start operation by a normal occupant, and an idling stop vehicle that realizes an easy-to-use restart without forcing the occupant to perform only the restart operation. Can be provided. In addition, since the idling stop state is in an idling stop state under the control of the occupant because the rider intentionally operates the engine 3 to reduce the rotational speed of the engine 3 below the required idling stop rotational speed Nstop. The starting condition can be only the operation of the clutch lever 32, and the control becomes easy.

  Further, a restart request switch 71 that receives an intentional operation for restarting the engine 3 may be provided. The restart request switch 71 is disposed at the right hand side end portion of the handle 27 together with the throttle grip 28, the start button switch 46, and the kill switch 47, for example. If it is arranged at the right hand side end of the handle 27, the restart request switch 71 can be operated with the right hand simultaneously with the occupant's clutch operation (left hand), and the usability is improved. The idling stop control device 36 restarts the engine 3 when the restart request switch 71 is pushed down. Note that the restart request switch 71 can also have the function of the start button switch 46.

  Whether the engine 3 is restarted by the operation of the clutch lever 32 or the restart request switch 71 depends on the long press operation of the idling stop mode selection switch 67 or the long press operation of the restart request switch 71. It may be switched.

  Next, idling stop control of the engine 3 by the idling stop control device 36 according to the present embodiment will be described.

  FIG. 3 is a timing chart showing the progress from the idling stop start control to the restart control by the idling stop control device according to the embodiment of the present invention.

  FIG. 4 is a flowchart showing the idling stop start control by the idling stop control device according to the embodiment of the present invention.

  As shown in FIGS. 3 and 4, the idling stop control device 36 according to the present embodiment checks the state of the idling stop mode selection switch 67 in the operating state of the engine 3 (step S <b> 1), and the idling stop mode selection switch. If 67 is ON (step S1 Yes), it is determined whether an idling stop permission condition is satisfied (step S2). On the other hand, when the idling stop mode selection switch 67 is not ON (No in step S1), the idling stop control device 36 sets the normal mode in which the idling stop control is not performed.

  When the idling stop permission condition is satisfied (Yes in step S2), the idling stop control device 36 transitions from the normal mode to the idling stop mode (step S3). On the other hand, when the idling stop permission condition is not satisfied (No in step S2), the idling stop control device 36 ends the idling stop control and maintains the normal mode without shifting to the idling stop mode.

  The idling stop control device 36 determines whether or not the idling stop permission condition is satisfied as the idling stop permission condition (step S2). The permission conditions are the detection results of various switches and sensors, the cooling water temperature of the engine 3 detected by the water temperature sensor 58, the rotational speed of the engine 3 detected by the crank rotation sensor 59, and the side stand switch 61 detected by the side stand switch 61. It is judged including the state.

  The idling stop control device 36 transitions from the normal mode to the idling stop mode when the permission condition (1) to the permission condition (5) are satisfied, and the transition from the operating state of the engine 3 to the idling stop state is performed. Allow implementation.

  Permission condition (1) The idling stop mode selection switch 67 is ON.

  Permission condition (2) The rotational speed of the engine 3 detected by the crank rotation sensor 59 indicates the operating state of the engine 3. That is, the engine 3 is in an operating state in which the idling stop can be used effectively.

  Permission condition (3) The cooling water temperature detected by the water temperature sensor 58 is within a predetermined setting range. The setting range is, for example, 60 ° C. to 110 ° C., and it is intended that the engine 3 is warmed up and smoothly restarted.

  Permission condition (4) In the current operation state of the engine 3, there is a travel history that is equal to or higher than a predetermined travel speed. The traveling history of a predetermined traveling speed or more is, for example, a history of traveling at 10 km or more per hour, and is intended to be a situation in the middle of traveling where the idling stop can be used effectively, for example, waiting for a signal.

  Permission condition (5) The side stand switch 61 detects the storage state of the side stand. For example, it is intended not to be in the middle of warming up the engine 3 with the side stand set up, but to be a situation where the idling stop can be used effectively.

  When the side stand switch 61 does not detect the storage state of the side stand, that is, when the side stand is standing, the engine 3 may be stopped by a control different from the idling stop control.

  The idling stop control device 36 switches from the normal mode to the idling stop mode (from the operation state of the engine 3 to the idling stop state) when the permission condition (1) to the permission condition (5) are satisfied (step S2 Yes). The mode is changed to a mode in which the execution of the transition is permitted (step S3).

  And the idling stop control apparatus 36 permits the transition from the driving | running state of the engine 3 to an idling stop state, when the implementation condition (C) is satisfy | filled from the following implementation conditions (A). When the idling stop control device 36 detects the execution condition (D) that is the intentional operation by the occupant who decreases the rotational speed of the engine 3 or decreases the rotational speed of the engine 3, a predetermined time elapses. Then, the engine 3 is temporarily stopped in a state where it can be restarted quickly.

  Implementation condition (A) The twist amount (operation amount) of the throttle grip 28 detected by the throttle position sensor 56 is zero, that is, the throttle opening is fully closed. This condition contemplates that the passenger is not requesting the motorcycle 1 to travel.

  Implementation condition (B) The traveling speed detected by the vehicle speed sensor 57 is 0 km / hour. That is, the motorcycle 1 is intended to stop.

  Implementation condition (C) The rotation speed of the engine 3 detected by the crank rotation sensor 59 is equal to or less than “normal idling rotation speed + 200 rpm”.

  Implementation condition (D) The rotational speed of the engine 3 detected by the crank rotational sensor 59 is lower than the idling stop required rotational speed Nstop.

  In order to detect an intentional operation by the occupant that decreases the rotational speed of the engine 3, the following condition execution condition (E) to execution condition (F) can be used. By utilizing these implementation conditions, it is possible to determine that the decrease in the rotational speed of the engine 3 at the time of starting is an idling stop request operation (vehicle state).

  Implementation condition (E) The shift position of the manual transmission 22 detected by the gear position sensor 66 is not at the neutral position but at any one of the shift positions from the first stage to the sixth stage.

  Implementation condition (F) At least one of the front wheel brake lever 29 and the rear wheel brake pedal 63 is operated, and the detection signal of the brake position switch 65 is in the ON state.

  The idling stop control device 36 that has transitioned to the idling stop mode (step S3) satisfies the execution condition (C) from the execution condition (A), and the engine 3 speed is lower than the preset idling stop request speed Nstop. It is determined whether or not (step S4).

  The idling stop control device 36 satisfies the execution condition (A) to the execution condition (C), and when the engine speed is lower than the preset idling stop request speed Nstop (step S4 Yes). The engine 3 is temporarily stopped in a state where it can be restarted immediately, that is, idling is stopped (step S5), and the fact that the engine 3 is idling stopped is displayed on the indicator 48 (step S6). A flag indicating the idling stop state is recorded in the storage unit of the idling stop control device 36 (step S7), and the idling stop start control is ended.

  On the other hand, the idling stop control device 36, when the rotation speed of the engine 3 is not lower than the preset idling stop required rotation speed Nstop, that is, when the rotation speed of the engine 3 is equal to or higher than the idling stop required rotation speed Nstop. (No in step S4), the idling stop start control is terminated, and the process returns to step S1.

  For example, when the motorcycle 1 stops waiting for a signal, the rider loosens the throttle grip 28 (operation in the closing direction), so that a decrease in the rotational speed of the engine 3 is detected by the crank rotation sensor 59, and the rider When the motorcycle 1 is braked by operating at least one of the front wheel brake lever 29 and the rear wheel brake pedal 63, the vehicle speed sensor 57 detects a reduction in the traveling speed. The throttle position sensor 56 detects the fully closed state of the throttle opening, the crank rotation sensor 59 detects that the rotational speed of the engine 3 has dropped to a predetermined rotational speed or less, and the vehicle speed sensor 57 stops the motorcycle 1. Detected. At this time, when the idling stop control device 36 detects that the implementation conditions (A) to (C) are satisfied among the idling stop conditions and further satisfies the implementation conditions (D), the idling stop control device 36 activates the count timer function of the CPU. The elapsed time is counted by using it, and the engine 3 is idling stopped after a predetermined time, for example, 1 second has elapsed.

  That is, the idling stop control device 36 monitors the engine speed after the execution conditions (A) to (C) are satisfied among the idling stop conditions. The idling stop control device 36 stops the motorcycle 1, closes the throttle grip 28, engages at least one of the front wheel brake lever 29 and the rear wheel brake pedal 63, and detects the engine 3 detected by the crank rotation sensor 59. When the rotational speed is lower than the idling stop required rotational speed Nstop, the engine 3 is stopped and transitions to an idling stop state when the engine has continued for a predetermined time, for example, 1 second. In the idling stop control, when the rider stops the motorcycle 1, the throttle grip 28 is closed, the front wheel brake lever 29 or the rear wheel brake pedal 63 is applied, and the clutch mechanism 31 is disconnected. By connecting the clutch mechanism 31 by operating the clutch lever 32 through a series of operations without releasing the hand from the handle 27 continuously, the engine 3 can be rotated at a reduced speed and idling can be stopped.

  It should be noted that the idling stop control according to the present invention relates to the engine speed stabilization control during idling (control to increase the engine speed when the idling engine speed decreases). By setting the rotational speed higher than the rotational speed at which the rotational speed stabilization control is performed, the engine 3 can be stopped without a feeling of jumping out of the motorcycle 1 (feeling that a relatively large forward driving force is applied). On the other hand, in the idling stop control of the present invention, when the idling stop required rotation speed Nstop is set lower than the rotation speed at which the stabilization control works, a relatively large forward driving force (feeling of popping out) is generated. The operation of the lever 29 or the rear wheel brake pedal 63 is required. At this time, the idling stop condition includes that the at least one of the front wheel brake lever 29 and the rear wheel brake pedal 63 is operated and the detection signal of the brake position switch 65 is in the ON state (implementation condition (F)). It is possible to detect the idling stop request of the person more accurately. Further, by including the execution condition (F) in the idling stop start condition, the engine stall due to the start failure, that is, the decrease in the engine speed due to the start failure is not erroneously recognized and the idling stop is not performed.

  Note that the idling stop start control repeatedly performs the flow of FIG. 4 when the idling stop mode selection switch 67 is ON.

  Next, restart control of the engine 3 by the idling stop control device 36 according to the present embodiment will be described.

  FIG. 5 is a flowchart showing the restart control by the idling stop control device according to the embodiment of the present invention.

  As shown in FIGS. 3 and 5, the idling stop control device 36 according to this embodiment is recorded in the storage unit of the idling stop control device 36 when the idling stop mode selection switch 67 is turned on (step S11). A flag (a flag indicating that the engine 3 is in an idling stop state) is checked (step S12).

  The idling stop control device 36 determines whether or not the restart condition of the engine 3 is satisfied (step S13) when the flag indicating the idling stop state is stored (step S12 Yes). On the other hand, when the flag indicating that the idling stop state is not stored (No in step S12), the idling stop control device 36 ends the restart control and returns to step S11.

  When the restart condition is satisfied (step S13 Yes), the idling stop control device 36 monitors the clutch position switch 62 and determines whether or not the clutch lever 32 is operated (step S14). On the other hand, when the restart condition is not satisfied (No at Step S13), the idling stop control device 36 ends the restart control and returns to Step S11.

  The idling stop control device 36 monitors the clutch position switch 62 and, when the clutch lever 32 is operated (Yes in step S14), closes the starter motor relay 55, operates the starter motor 53, and restarts the engine 3. The engine 48 is started (step S15), the fact that the engine 3 is in operation is displayed on the indicator 48 (step S16), and the flag indicating that the engine 3 is in the idling stop state is deleted from the storage unit of the idling stop control device 36 ( Initialization) (step S17), and the restart control is terminated. On the other hand, the idling stop control device 36 monitors the clutch position switch 62, and when the clutch lever 32 is not operated (No at Step S14), returns to Step S11.

  The idling stop control device 36 determines whether or not a restart permission condition is satisfied as a restart condition (step S13), and waits for the restart of the engine 3 when each condition is satisfied. (Step S13 Yes). The permission conditions are the detection results of various switches and sensors, the cooling water temperature of the engine 3 detected by the water temperature sensor 58, the rotational speed of the engine 3 detected by the crank rotation sensor 59, and the side stand switch 61 detected by the side stand switch 61. It is judged including the state.

  The idling stop control device 36 permits the engine 3 to perform a transition from the idling stop state to the operating state when the following permission condition (1) to permission condition (5) are satisfied.

  Permission condition (1) The idling stop mode selection switch 67 is ON. If the idling stop mode selection switch 67 changes from the ON state to the OFF state when the engine 3 is in the idling stop state, the idling stop restart control is terminated, and a start request by the start button switch 46 by a normal passenger In order to restart, the start button switch 46 is operated.

  Permission condition (2) The rotational speed of the engine 3 detected by the crank rotation sensor 59 is 0 rpm. That is, the engine 3 is in a stopped state.

  Permission condition (3) The cooling water temperature detected by the water temperature sensor 58 is within a predetermined setting range. Within the set range, it is set lower than the cooling water temperature (for example, 50 ° C. to 110 ° C.) of the previous permission condition (3) permitting the transition from the operation state of the engine 3 to the idling stop state. It is intended to detect that the warm-up operation has been completed and that the engine can be smoothly restarted and that the engine 3 has not been left for a long time after it has entered the idling stop state. In addition, in order to detect leaving for a long time, you may provide the timer which measures the time after the engine 3 will be in an idling stop state separately, and may utilize it for control. When it is detected that the engine has been left for a long time, the idling stop restart control is terminated, and a normal start request from the start button switch 46 by an occupant is awaited. To restart the operation, the start button switch 46 is operated. Will be performed.

  Permission condition (4) In the current operation state of the engine 3, there is a travel history that is equal to or higher than a predetermined travel speed. The traveling history of a predetermined traveling speed or more is, for example, a history of traveling at 10 km or more per hour, and is intended to be a situation in the middle of traveling where the idling stop can be used effectively, for example, waiting for a signal.

  Permission condition (5) The side stand switch 61 detects the storage state of the side stand. For example, even when the engine 3 is in the idling stop state, it is intended to end the idling stop restart control when attempting to park the motorcycle 1 with the side stand raised. In other words, when the side stand is set up in the idling stop state, the restart control of the idling stop is terminated, and a normal request for a start by the start button switch 46 by a passenger is waited. Will be performed.

  The idling stop control device 36 permits the engine 3 to perform the transition from the idling stop state to the operating state when the above permission conditions (1) to permission condition (5) are satisfied (step S13 Yes).

  The idling stop control device 36 operates the engine 3 from the idling stop state when the execution condition (D) is satisfied from the next execution condition (A) and the clutch lever 32 is operated (Yes in step S14). The transition to restart (step S15) for setting the state is permitted.

  Implementation condition (A) At least one of the front wheel brake lever 29 and the rear wheel brake pedal 63 is operated, and the detection signal of the brake position switch 65 is in the ON state.

  Implementation condition (B) The operation amount of the throttle grip 28 detected by the throttle position sensor 56 is zero, that is, the throttle opening is fully closed. This condition is intended to suppress defects after restart. In order to improve the restartability of the engine 3, the throttle opening may not be fully closed but may be, for example, 20% (ratio to full opening) or less.

  Implementation condition (C) The traveling speed detected by the vehicle speed sensor 57 is 0 km / hour. That is, the motorcycle 1 is intended to stop.

  Implementation condition (D) The rotational speed of the engine 3 detected by the crank rotation sensor 59 is 0 rpm. That is, the engine 3 is in a stopped state.

  In the restart control, when the idling stop mode selection switch 67 is ON, the flow of FIG. 5 is repeatedly processed.

  The idling stop control device 36 monitors the clutch position switch 62 and operates the clutch lever 32 (Yes in step S14) until the engine 3 is restarted (step S15). An interval of Td, for example, 0.5 seconds may be provided. By this time interval Td, the idling stop control device 36 restarts the engine 3 after the clutch mechanism 31 completely cuts off the transmission of power, so as to cope with variations in the operation of the clutch mechanism 31, The detection accuracy requirement can be relaxed.

  The idling stop control device 36 according to the present embodiment is a motorcycle 1 without separating the passenger's fingers from the clutch lever 32 and the front wheel brake lever 29 as in the operation of the idle control switch in the conventional idling stop control device. The operation state is shifted to the idling stop state by reducing the rotation speed of the engine 3 in a series of stop operations. Thereby, the idling stop control device 36 can provide an easy-to-use idling stop that is less troublesome than the conventional idling stop control device.

  Further, the idling stop control device 36 according to the present embodiment stops the engine 3 from the driving state when the brake position switch 65 detects the operation of at least one of the front wheel brake lever 29 and the rear wheel brake pedal 63. By making the transition to the state, it is possible to prevent the idling stop from being erroneously recognized due to a decrease in the engine speed due to the start failure, and consequently no influence is exerted when the engine is restarted later.

  Further, the idling stop control device 36 according to the present embodiment may restart the engine 3 by operating the restart request switch 71. However, the engine 3 is placed in the idling stop state based on the intentional operation by the passenger. Therefore, it is possible to restart from the idling stop state to the driving state by detecting the operation of the clutch lever 32 by the occupant, and to operate the idle control switch in order to restart the engine 3. For example, the engine 3 can be restarted by a series of operations from when a green light is generated until the vehicle starts, without requiring any extra operation (operation) other than the operation.

  Furthermore, the idling stop control device 36 according to the present embodiment detects an intentional operation by an operation on the clutch mechanism 31, and thus performs an action that is always performed when the motorcycle 1 including the manual transmission 22 is started. Therefore, the troublesomeness can be eliminated as compared with the conventional idling stop control device that requires an individual or separate operation for restarting the engine 3.

  Therefore, according to the idling stop control device 36 according to the present invention, in the motorcycle 1 including the manual transmission 22, the engine 3 can be idling stopped by a series of operations related to the stopping operation.

DESCRIPTION OF SYMBOLS 1 Motorcycle 2 Body frame 3 Engine 5 Steering mechanism 6 Front wheel 7 Rear wheel suspension device 8 Rear wheel 11 Engine control device 12 Head pipe 13 Main frame 15 Pivot frame 16 Rear frame 17 Air cleaner box 18 Fuel tank 19 Pivot shaft 21 Exhaust muffler 22 Manual transmission 23 Seat 25 Front fork 26 Front fender 27 Handle 28 Throttle grip 29 Front wheel brake lever 31 Clutch mechanism 32 Clutch lever 33 Swing arm 35 Rear cushion unit 36 Idling stop control device 37 Front cowling 38 Side cover 39 Seat cowling 41 Rear fender 45 Ignition Key switch 46 Start button switch 47 Kill switch 48 Indices 49 Fuel injection device 51 Ignition device 52 Battery 53 Starter motor 55 Starter motor relay 56 Throttle position sensor 57 Vehicle speed sensor 58 Water temperature sensor 59 Crank rotation sensor 61 Side stand switch 62 Clutch position switch 63 Rear wheel brake pedal 65 Brake position switch 66 Gear position Sensor 67 Idling stop mode selection switch 68 Idling stop control unit 69 Restart control unit 71 Restart request switch

Claims (4)

In an idling stop control device for a motorcycle including an engine, a manual transmission, and a clutch mechanism that connects (fastens) or shuts off (releases) power transmission from the engine to the manual transmission.
A crank rotation sensor for detecting the rotation speed of the engine;
When the engine rotation speed detected by the crank rotation sensor falls below a rotation speed (threshold value) for starting idling stop that is preset to a value lower than the normal idling rotation speed, the engine is stopped from the operating state. An idling stop control device for a motorcycle, comprising: an idling stop control unit that transitions to a state. A brake position switch for detecting whether or not at least one of a front wheel brake lever and a rear wheel brake pedal is operated;
The idling stop control unit causes the engine to transition from an operating state to an idling stop state when the brake position switch detects an operation of at least one of a front wheel brake lever and a rear wheel brake pedal. Motorcycle idling stop control device. The idling stop control device for a motorcycle according to claim 1 or 2, further comprising: a restart control unit that restarts the engine from an idling stop state to a driving state based on an intentional operation by a rider of the motorcycle. . The idling stop control device for a motorcycle according to claim 3, wherein the intentional operation is an operation on the clutch mechanism.

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