JP2008223531A - Starting display device for motorcycle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To perform display for recommending kick starting by detecting a state in which cell starting is possible, and to prevent a battery charging amount from being reduced and battery performance from being decreased by unreasonable cell starting in a hybrid type vehicle. <P>SOLUTION: The battery 23 is power-generated by a generator also used as a starter motor 26 driven by an engine 3, and is charged by electric power. The starter motor 6 and the vehicle traveling motor 7 are driven making the battery 23 as a power source. ECU 24 compares SOC of the battery 23 and an intake temperature representing a battery temperature measured by a temperature sensor 20 with a predetermined value respectively. If the SOC or the intake temperature is a predetermined value or less, since the kick starting is recommended, a kick starting recommendation display unit 266 provided on a meter panel 26 is lighted/displayed. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a start display device for a motorcycle, and particularly to a motorcycle equipped with both a cell start device and a kick start device, whether it is appropriate to start the engine using either the cell start device or the kick start device. It is related with the starting display apparatus of the motorcycle suitable for displaying.

Cell starters and kick starters are known as engine starters for motorcycles. In the cell starting device, a starter motor is driven using a battery as a power source to rotate the crankshaft. In the kick starter, the crankshaft is rotated by stepping on a kick pedal coupled to the crankshaft. In a small engine, the engine can be easily started using a kick starter. However, in a large engine, a cell starter is often used because the kick starter may not be able to start the engine easily. However, the cell starter requires a battery with a large capacity, and the kick starter may be required when the battery charge is small. Therefore, there are cases where both a cell starter and a kick starter are mounted on a motorcycle and used appropriately. Examples of motorcycles equipped with both a cell starter and a kick starter are described in Japanese Patent Application Laid-Open Nos. Sho 62-111163 and 2005-248827.
JP-A-62-1111632 JP 2005-248827 A

  In a motorcycle equipped with both a cell starter and a kick starter, the cell starter is convenient and frequently used. For example, the cell starter may be difficult to operate in the following cases. First, when the battery temperature is low, the current required for starting the cell cannot be obtained. Second, the battery charge amount (SOC) is equal to or lower than a predetermined lower limit value, so that a current necessary for starting the cell cannot be obtained. However, since the user of the motorcycle cannot recognize these situations, it tries to start the cell. However, since it does not succeed in starting immediately, the start operation is repeated, resulting in a decrease in battery performance. There is.

  Therefore, it is desirable that the user can easily recognize the situation where the cell start is difficult and the start operation is not repeated. In particular, in a hybrid vehicle in which a vehicle is driven by a motor driven by a battery in addition to the engine, the battery SOC is kept within a predetermined range (for example, 30 to 80%), and the possibility of vehicle driving by the motor is increased. Since it is preferable to raise it, it is desirable not to repeat the cell starting operation which lowers | hangs SOC.

  In view of the above problems, an object of the present invention is to provide a start display device for a motorcycle capable of preserving a battery by recommending kick start in a situation where cell start is difficult.

  The present invention for solving the above-described problems includes a kick starter, a starter motor that also serves as a generator, and a battery that is charged by the generator and serves as a power source for the starter motor. In a motorcycle start display device capable of selecting one of the motors to start the engine, the SOC indicating the charge amount of the battery is equal to or lower than a predetermined low charge amount determination value, or the battery temperature is determined to be low A first feature is that it includes kick start recommendation determining means for outputting a kick start recommendation display instruction when the value is equal to or less than a value, and display means for performing kick start recommendation display in response to the kick start recommendation display instruction. is there.

  Moreover, the present invention has a second feature in that at least one of an indicator lamp and a sound generator is provided as the display means on the meter panel of the motorcycle.

  According to a third aspect of the present invention, the temperature detecting means is a temperature sensor provided in an intake pipe of an engine, and the battery temperature is represented by the intake air temperature detected by the temperature sensor. There are features.

  In addition, the present invention has a fourth feature in that it is a start display device mounted on a hybrid type motorcycle having a vehicle driving motor that uses the battery as a power source together with the engine as a driving means of the vehicle.

  Furthermore, the present invention has a fifth feature in that it is a start display device mounted on a hybrid type motorcycle that can operate a starter motor as an auxiliary drive source of the engine during traveling of the motorcycle.

  According to the present invention having the first feature described above, whether or not the battery charge (SOC) is a low charge below a threshold and / or whether the battery temperature is below a threshold low Thus, it is possible to detect a state in which the starter motor is expected to deteriorate with the starter motor. When a state in which the starter motor is expected to deteriorate with the starter motor is detected, the kick start recommendation display can be performed using the display means. Therefore, the user can recognize the starting method determined to be appropriate depending on the state of the battery among the kick start and the start by the starter motor (cell start). As a result, it is possible to avoid the problem that the performance of the battery is deteriorated by continuously trying to start the cell.

  According to the present invention having the second feature, since the display means is provided on the meter panel, the starting method can be easily recognized visually or audibly when the user tries to use the motorcycle.

  According to the present invention having the third feature, a temperature sensor generally provided in the intake pipe for the fuel supply control of the engine or the like can be used to detect the battery temperature, so that an increase in the number of sensors can be suppressed. Can do.

  According to the present invention having the fourth and fifth features, in a hybrid vehicle using a motor as a drive source together with an engine for vehicle travel, the battery charge amount is preserved to increase the possibility of travel by the motor. be able to.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing a system configuration of a hybrid motorcycle having a start display device according to an embodiment of the present invention. In the figure, a power unit 2 of a motorcycle 1 includes a four-cycle internal combustion engine 3, a transmission 4, a speed reducer 5, a generator / starter motor (hereinafter referred to as “starter motor”) 6, and a vehicle running motor 7. . The transmission 4 is a continuously variable transmission having a drive shaft 9 that is an extension of the crankshaft 8 and a V-belt 11 that transmits power from the drive shaft 9 to a driven shaft 10 that is an input shaft of the speed reducer 5. The transmission 5 includes a starting centrifugal clutch (not shown). The starter motor 6 is a brushless motor having a rotor magnet 61 rotated integrally with the crankshaft 8 and a stator coil 62 held by the crankcase 12 of the engine 3.

  One end of the driven shaft 10 of the transmission 4 is connected to the speed reducer 5, and a drive wheel 14 is connected to the output shaft 13 of the speed reducer 5. The vehicle running motor 7 is a brushless motor having a rotor magnet 71 connected to the other end of the driven shaft 10 via a one-way clutch (not shown) and a stator coil 72 held by the transmission case 15.

  A kick starter 16 is provided at the end of the drive shaft 9. The kick starter 16 is driven by the drive gear 162 connected to the support shaft of the kick pedal 161 and is rotated by the drive gear 162 to generate a thrust, which is biased toward the transmission 4 and engaged with the drive shaft 9. 163.

  An intake pipe 17 is connected to the intake port of the engine 3, a throttle valve 18 is disposed at an intermediate portion of the intake pipe 17, and an air cleaner 19 is disposed at an end of the intake pipe 17. Further, the intake pipe 17 is provided with a temperature sensor 20 for measuring the intake air temperature between the air cleaner 19 and the throttle valve 18.

  The control unit 21 of the motorcycle 1 includes a driver 22 for the starter motor 6, a battery 23, an ECU 24, a driver 25 for the vehicle travel motor 7, and a meter panel 26. The driver 22 includes a driver circuit that drives the starter motor 6 using the battery 23 as a power source, and a charging circuit that charges the battery 23 with the generated power when the starter motor 6 operates as a generator.

  The ECU 24 instructs the driver 22 and the driver 25 to drive the starter motor 6 and the vehicle travel motor 7 respectively. Further, the ECU 24 has a function of performing a process for issuing a warning or display for prompting the start by the kick starter 16 based on the intake air temperature detected by the temperature sensor 18 and the SOC of the battery 23. The ECU 24 includes an SOC calculating unit that integrates the charge / discharge current of the battery 23 and calculates the SOC of the battery 23 based on the integrated value. In addition, the ECU 24 includes a memory that stores a low temperature determination value and a low charge amount determination value, which will be described later, in advance. The meter panel 26 includes a display that displays a processing result by the ECU 24.

  Next, an example of processing by the ECU 24 is shown. FIG. 2 is a flowchart showing a kick start indicator determination process, which is a main part of the process performed by the ECU 24. This determination process is started when the main switch of the motorcycle 1 is turned on and a predetermined control voltage is applied to the ECU 24. In the figure, in step S1, it is determined whether or not the actually measured temperature T measured by the temperature sensor 20 is equal to or lower than a preset low temperature determination value C_TL. If the determination in step S1 is affirmative, the process proceeds to step S2 to output a kick start recommendation display instruction signal to an indicator of the meter panel 26, that is, a display.

  If the determination in step S1 is negative, the process proceeds to step S3, in which it is determined whether the SOC of the battery 23 is equal to or less than a preset low charge amount determination value C_SOC. If the determination in step S3 is affirmative, the process proceeds to step S2 to output a kick start recommendation display instruction signal to the meter panel 26. If the determination in step S3 is negative, step S2 is skipped and the process ends.

  When the intake air temperature is lower than the predetermined value, that is, when the battery temperature is estimated to be low as in the above-described process, or when the SOC of the battery 23 is lower than the predetermined value, the kick start recommendation display is displayed on the meter panel 24. Done. That is, when the engine startability by the starter motor 6 is expected to be not good, the user is prompted to start by the kick starter 16.

  FIG. 3 is a diagram showing an example of the relationship between the SOC of the battery and the maximum output current, that is, the characteristics of the battery, using the battery temperature as a parameter. The usable range of the starter motor 6 is a range in which the SOC is A% or more and B% or less, and the maximum output current is greater than the lower limit value of the current required for starting by the starter motor 6 (cell starting current lower limit value). It is. When the SOC is B% or more, the engine 3 is not started because it is suitable for driving the vehicle travel motor 7 by the output of the battery 23. Therefore, when the SOC is B% or more, the starter motor 6 is out of the usable range.

  According to the battery having the characteristics shown in FIG. 3, when the battery temperature is 25 ° C. and 20 ° C., the maximum output current equal to or higher than the cell starting current lower limit value is obtained even when the SOC is the lower limit value A%. Therefore, the low temperature determination value C_TL can be set to 20 ° C. or less. In this way, the low temperature determination value C_TL can be set based on the battery characteristics measured in advance. The maximum output current determines the cell starting current lower limit value based on the 5-second maximum output current, but the criteria for determining the cell starting current lower limit value differ depending on the vehicle type and engine type. Regardless of the battery temperature, if the SOC is equal to or lower than the low charge amount determination value C_SOC, the battery is out of the usable range. That is, the low charge amount determination value C_SOC is A%.

  FIG. 4 is a diagram illustrating an example of the meter panel 24. The meter panel 26 is provided in the front part of the motorcycle 1, and is provided with a speedometer 261, a remaining fuel amount meter 262, an odometer 263, direction indication indicators 264R and 264L, and a headlamp indicator 265. These are meters and displays that are conventionally provided in a meter panel. In this embodiment, in addition to these, a kick start recommendation display 266 is provided on the meter panel 26. The kick start recommendation indicator 266 is a visually recognizable indicator such as an LED lamp. In this example, the kick start recommendation display 266 is disposed between the headlight display 245 and the direction indication display 244R. However, the position is not limited to this position, and the front surface of the meter panel 26 (surface facing the occupant). As long as it is provided.

  It should be noted that the kick start recommendation display 266 can not only allow the occupant to visually recognize the recommendation of the start of the kick, but a sound generator 267 such as a speaker (or buzzer) may be provided to make a kick start recommendation by sound. . Further, kick start recommendation may be performed only by sound instead of the display by the LED lamp.

  Thus, by performing a kick start recommendation display appealing to sight and hearing, the user of the motorcycle 1 can recognize that it is difficult to start the cell using the starter motor 6, and instead of starting the cell, The engine can be started with an appropriate kick operation.

  Further, the battery temperature is represented by the actually measured temperature of the temperature sensor 20 provided in the intake pipe 17, but the battery temperature may be represented by another temperature sensor. For example, the battery temperature may be the case internal temperature of the battery 23, the battery case surface temperature, or the actually measured temperature inside the vehicle body cowl covering the battery 23. Further, since a motorcycle is usually provided with a thermometer for measuring the engine oil temperature, the battery temperature may be represented by the engine oil temperature.

  Next, a second embodiment of the present invention will be described. The above-described example is a start display device for a hybrid type motorcycle in which a motor 7 is provided separately from the starter motor 6 and dedicated to vehicle travel. In the second embodiment, the starter motor 6 can also be used for driving the motorcycle 1. FIG. 5 is a block diagram showing a system configuration of the motorcycle 1 according to the second embodiment, and the same reference numerals as those in FIG. 1 denote the same or equivalent parts. The starter motor 6 is not only used for starting the engine 3 and charging the battery 23 but also assists the power of the engine 3. That is, the starter motor 6 is driven not only when the engine 3 is started but also with the battery 23 as a power source while the engine 3 is rotating. First, the engine 3 is started by the starter motor 6 or the kick starter 16. When the engine 3 is started, the starter motor 6 operates as a generator, and the battery 23 is charged with the generated power. If the battery 23 is sufficiently charged, power generation is stopped when necessary, such as during acceleration, and power is supplied from the battery 23 to the starter motor 6. Thus, the starter motor 6 is used as an auxiliary drive source for the engine 3.

  The ECU 24 detects acceleration of the engine 3 due to a change in a throttle valve opening degree (not shown), intake pipe negative pressure, or the like, and drives the starter motor 6 as an auxiliary drive source. Further, the ECU 24 recommends kick start with the meter panel 26 when it is determined that the engine start by the kick starter 16 is appropriate depending on the temperature of the battery 23 or the charge amount of the battery 23, as described with reference to FIGS. Display.

  In this specification, in the first and second embodiments, the kick start recommendation display is applied to a hybrid type vehicle as a motorcycle, but the present invention is not limited to this, and the starter motor and the kick start device are not limited thereto. The present invention can also be applied to a motorcycle using only an engine having both of these as a drive source.

1 is a system configuration diagram of a motorcycle including a start display device according to an embodiment of the present invention. It is a flowchart which shows the principal part process of the start display apparatus which concerns on one Embodiment of this invention. It is a figure which shows the example of a characteristic of the battery by the maximum output electric current and charge amount (SOC). It is a front view of the meter panel which has a kick start recommendation display means. It is a system block diagram of the motorcycle provided with the starting display apparatus which concerns on 2nd Embodiment of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Motorcycle, 2 ... Power unit, 3 ... Engine, 4 ... Transmission, 5 ... Reduction gear, 6 ... Starter motor, 7 ... Vehicle drive motor, 8 ... Crankshaft, 9 ... Drive shaft, 10 ... Drive shaft, DESCRIPTION OF SYMBOLS 11 ... V belt, 12 ... Crank case, 16 ... Kick starter, 17 ... Intake pipe, 18 ... Throttle valve, 19 ... Air cleaner, 20 ... Temperature sensor, 21 ... Control unit, 22 ... Driver, 23 ... Battery, 24 ... ECU, 25 ... Motor driver for vehicle travel, 26 ... Meter panel

Claims (5)

A kick starter, a starter motor that also serves as a generator, and a battery that is charged with the power generated by the generator to serve as a power source for the starter motor, and selects either the kick starter or the starter motor In the motorcycle start display device that can start the engine,
SOC calculating means for calculating the SOC indicating the amount of charge of the battery;
Temperature detecting means for detecting the battery temperature;
Storage means for presetting a low temperature determination value of the battery and a low charge amount determination value of the battery;
Kick start recommendation determination means for outputting a kick start recommendation display instruction when the SOC calculated by the SOC calculation means is not more than the low charge amount determination value or the battery temperature is not more than the low temperature determination value;
A start display device for a motorcycle, comprising display means for displaying a kick start recommendation display in response to the kick start recommendation display instruction.   2. The starting display device for a motorcycle according to claim 1, wherein the display means is at least one of an indicator lamp and a sound generator provided on a meter panel of the motorcycle.   3. The temperature sensor is a temperature sensor provided in an intake pipe of an engine, and the battery temperature is represented by an intake air temperature detected by the temperature sensor. A motorcycle start display device.   The start display apparatus for a motorcycle according to any one of claims 1 to 3, which is mounted on a hybrid motorcycle having a vehicle driving motor that uses the battery as a power source together with the engine as a driving means of the vehicle.   The start display device for a motorcycle according to any one of claims 1 to 3, which is mounted on a hybrid motorcycle that operates the starter motor as a driving means of a vehicle using the battery as a power source together with the engine.

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