JP4420157B2 - Control device for motorcycle - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a control device of a motorcycle having a center stand which supports the vehicle body in a state floated drive wheels from the ground to the car parking stop.
[0002]
[Prior art]
In general, a lightweight motorcycle such as a scooter is provided with a center stand at the bottom of the vehicle body. During parking, the center stand is removed from the vehicle body and the vehicle body is moved with the rear wheels (drive wheels) floating above the ground. The center stand is stored on the vehicle body side when traveling. In the state where the vehicle body is supported by the center stand, the rear wheel will idle when the engine output is transmitted to the rear wheel. In addition, a vehicle speed sensor is installed on the front wheel (non-driving wheel) side where idling does not occur, and a vehicle speed signal (pulse signal) corresponding to the rotational speed of the front wheel is output by this vehicle speed sensor, and a speed meter according to the vehicle speed signal And the integrated mileage meter is operated.
[0003]
[Problems to be solved by the invention]
By the way, some four-wheeled vehicles are equipped with a vehicle speed sensor abnormality diagnosis system, but two-wheeled vehicles are not equipped with a vehicle speed sensor abnormality diagnosis system. The conventional abnormality diagnosis system for a vehicle speed sensor of a four-wheeled vehicle determines, for example, the traveling state of the vehicle based on the throttle opening and the engine speed, and whether or not the vehicle speed sensor outputs a vehicle speed signal corresponding to the traveling state. Depending on the situation, the presence or absence of abnormality of the vehicle speed sensor is determined.
[0004]
As described above, in the state where the vehicle body is supported by the center stand, even if the rear wheel floating from the ground is idle, the front wheel that is in contact with the ground does not idle, so the vehicle speed sensor provided on the front wheel side when the rear wheel is idle. Does not output a vehicle speed signal. When the above-described abnormality diagnosis system for a four-wheeled vehicle speed sensor is applied to a two-wheeled vehicle, the abnormality diagnosis system erroneously determines that the idling of the parked rear wheel is a running state, and therefore the vehicle speed signal is output from the vehicle speed sensor when the rear wheel is idle. This causes a problem that it is erroneously determined that the operation is not performed.
[0005]
If the vehicle speed sensor is installed on the rear wheel side, erroneous determination of an abnormality in the vehicle speed sensor when the rear wheel idles can be prevented. However, as described above, if the vehicle speed sensor is installed on the rear wheel side, the rear wheel idle vehicle is parked. Occasionally, the speed meter and the integrated mileage meter operate.
[0006]
The present invention has been made in view of such circumstances. Accordingly, the object of the present invention relates to an abnormality diagnosis or meter operation of a vehicle speed sensor when a driving wheel (rear wheel) is idle in a motorcycle equipped with a center stand. It is an object of the present invention to provide a motorcycle control device that can solve the problems.
[0007]
[Means for Solving the Problems]
To achieve the above object, a control device for a motorcycle according to claim 1 of the present invention, non-driven wheels during parked is in contact with a non-idle state to the ground, and floated drive wheel from the ground has a center stand which supports the vehicle body capable of idling state, during the running in which the center stand is stored in the vehicle body,-out based on the engine operating state, the vehicle is running the engine output is transmitted to the drive wheels determining whether the state by the running state judging means, when said driving wheel by the running condition determination means determines that the vehicle rotates and a traveling state, the abnormality of the vehicle speed sensor based on the vehicle speed signal from the speed sensor The presence or absence of an abnormality is determined by an abnormality diagnosis means. At this time, it is determined from the output signal of the stand position detecting means whether or not the center stand is extended to the support position for supporting the vehicle body, and it is determined that the vehicle is in the traveling state by the traveling state determining means, and the stand When it is detected by the position detection means that the center stand is in the support position, it is determined that the driving wheel is idling and the abnormality diagnosis prohibiting means prohibits the abnormality diagnosis of the vehicle speed sensor.
[0008]
That is, since the center stand if issued support position, there is a possibility that erroneous determination that the running state of the idling of the drive wheels of the car parking stop, in the present invention, the center stand has been issued to the support position Sometimes, the abnormality diagnosis of the vehicle speed sensor is prohibited. Thus, it can be prevented beforehand that result in abnormal erroneous determination of normal vehicle speed sensor at the time of driving wheels racing of car parking stop, it is possible to improve the reliability of the abnormality diagnosis of the vehicle speed sensor.
[0009]
In this case, in a state where the vehicle body is supported by the center stand, even if the driving wheel floating from the ground is idle, the non- driving wheel that is in contact with the ground does not idle. It is preferable to provide a vehicle speed signal corresponding to the rotational speed of the non-driven wheels. By this way, during idling of the drive wheel of the car parking stop, because the vehicle speed signal from a vehicle speed sensor provided in the non-driven wheel side is not output, the speed meter and integrated travel distance according to the vehicle speed signal from the speed sensor when controlling the meter, speed meter and integrated travel distance meter during idling of the drive wheel of the car parking stop it can be prevented from being operated.
[0010]
On the other hand, as claimed in claim 3, a vehicle speed sensor for detecting a vehicle speed, based on engine operating conditions, the engine output is transmitted to the drive wheels and determining the traveling state determining means for determining the vehicle is in the running state And a speed meter and / or an integrated travel distance meter according to a vehicle speed signal output from a vehicle speed sensor when the driving wheel is rotated by the driving state determining means to determine that the vehicle is in a driving state. When control is performed by the meter control means, when the vehicle state is determined by the travel state determination means and the center position is detected by the stand position detection means , the drive wheel is idled. It is preferable to stop the operation of the speed meter and / or the integrated mileage meter by the meter stop means based on the determination that the vehicle is running. That is, if the issued center stand, it is determined that the car parking stop, stop speed display of the speedometer (held in 0 km / h) or to stop the integration operation of the integrated travel distance meter. Thus, it is possible to prevent the time wheel racing of car parking stop be output vehicle speed signal from a vehicle speed sensor, that the speedometer and the accumulated travel distance meter put away malfunction.
[0011]
In this case, as in claim 4, when the vehicle body is supported by the center stand with the driving wheel floating from the ground, a vehicle speed sensor is provided on the driving wheel side or in the driving system, and according to the rotational speed of the driving wheel. It is better to output a vehicle speed signal. By this way, even when idling of the drive wheel of the car parking stop, just like when traveling, since the vehicle speed signal from the vehicle speed sensor is output, the abnormality of the vehicle speed sensor when idling of the drive wheel of the car parking stop Even if the diagnosis is erroneously determined as the traveling state, the output state of the vehicle speed sensor becomes the same as the traveling state, and it is possible to prevent the normal vehicle speed sensor from being erroneously determined as abnormal.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
[Embodiment (1)]
Hereinafter, an embodiment (1) of the present invention will be described with reference to FIGS.
First, a schematic configuration of the entire system will be described with reference to FIG. An intake manifold 12 is connected to the intake port 10 of each cylinder of the engine 11 which is an internal combustion engine, and an air box 13 is connected to the upstream side of the intake manifold 12 of each cylinder, and is sucked into the air box 13. The air is sucked into the intake manifold 12 of each cylinder through an air cleaner (not shown). An intake air temperature sensor 14 for detecting the intake air temperature is attached to the air box 13.
[0015]
A throttle valve 15 is attached in the middle of the intake manifold 12 of each cylinder, and an opening degree (throttle opening degree) of the throttle valve 15 is detected by a throttle opening degree sensor 16. Further, an intake pressure sensor 17 for detecting intake pressure is provided on the downstream side of the throttle valve 15 in the intake manifold 12, and a fuel injection valve 18 is attached in the vicinity of the intake port 10 of each cylinder. Yes.
[0016]
On the other hand, the fuel pumped up from the fuel tank 19 by the fuel pump 20 is sent to the fuel pipe 21 → the fuel filter 22 → the fuel pipe 23 → the delivery pipe 24, and is distributed to the fuel injection valve 18 of each cylinder. Excess fuel in the delivery pipe 24 is returned to the fuel tank 19 through a path of the pressure regulator 25 → the return pipe 26. The pressure regulator 25 adjusts the fuel pressure in the delivery pipe 24 so that the differential pressure between the fuel pressure in the delivery pipe 24 and the intake pressure is constant.
[0017]
An ignition plug 27 is attached to the cylinder head of the engine 11 for each cylinder, and a high voltage generated on the secondary side of the ignition coil 28 at each ignition timing is applied to the ignition plug 27 of each cylinder and ignited. The engine 11 is provided with an engine rotation speed sensor 29 that detects the engine rotation speed, a cylinder determination sensor 30 that determines a specific cylinder, and a water temperature sensor 31 that detects the cooling water temperature. An atmospheric pressure sensor 32 for detecting atmospheric pressure is attached to a predetermined position of the vehicle body.
[0018]
As shown in FIG. 2, the output of the engine 11 is transmitted to a rear wheel 33 that is a drive wheel via a transmission (not shown) such as a continuously variable transmission. Further, a vehicle speed sensor 36 (see FIG. 1) that outputs a vehicle speed signal (pulse signal) having a frequency corresponding to the rotational speed of the front wheel 34 is provided on the rotation shaft 35 of the front wheel 34 that is a non-drive wheel. When the front wheel 34 is stopped, no vehicle speed signal is output from the vehicle speed sensor 36.
[0019]
On the other hand, as shown in FIG. 2, a center stand 37 for supporting the vehicle body in an upright state is rotatably provided at the lower part of the vehicle body. rotated in the support position protruding downward), floating the center stand 37, in a non-idle wheel 34 is non-driven wheels in contact with the ground state, wheel 33 after and a drive wheel from the ground And support the vehicle body in an idle state. On the other hand, during traveling, the center stand 37 is rotated and stored in the vehicle body side (upward) so as not to interfere with traveling. Whether or not the center stand 37 is in the support position is detected by a center stand position sensor 38 (see FIG. 1) which is a stand position detecting means.
[0020]
Output signals from various sensors are input to an engine ECU 39 which is an engine control means for controlling the engine operating state. The output signals of the engine rotation speed sensor 29, the vehicle speed sensor 36, the center stand position sensor 38, and the fuel fuel gauge (not shown) are meter control means for controlling the operation of each meter in the meter panel 40. Also input to the ECU 41. The engine ECU 39 and the meter ECU 41 are each composed mainly of a microcomputer, and the engine ECU 39 executes various control programs (not shown) stored in the ROM 42 (storage medium), so that the fuel according to the engine operating state is obtained. The fuel injection amount of the injection valve 18 and the ignition timing of the spark plug 27 are controlled. The meter ECU 41 controls the operation of the speed meter in the meter panel 40 and the integrated travel distance meter according to the vehicle speed signal from the vehicle speed sensor 36, and the engine according to the engine speed signal from the engine speed sensor 29. Controls the operation of the rotation speed meter.
[0021]
Further, the engine ECU 39 executes a vehicle speed sensor abnormality diagnosis routine of FIG. 3 to detect a predetermined traveling state (for example, a deceleration state) based on the engine operating state, and the vehicle speed signal is input from the vehicle speed sensor 36 during deceleration. The presence or absence of abnormality of the vehicle speed sensor 36 is determined depending on whether or not it exists. At this time, when the center stand 37 is in the support position, the abnormality diagnosis of the vehicle speed sensor 36 is prohibited, and when the rear wheel 33 is parked, the vehicle is erroneously determined to be in a decelerating state and the abnormality diagnosis of the vehicle speed sensor 36 is performed. Prevent accidental implementation.
[0022]
The vehicle speed sensor abnormality diagnosis routine of FIG. 3 is executed every predetermined time (for example, every 4 ms). When this routine is started, first, at step 101, based on the output signal of the center stand position sensor 38, it is determined whether or not the center stand 37 is in a support position for supporting the vehicle body. If it is determined that the center stand 37 is in the support position, it is determined that there is a possibility of erroneous determination that the vehicle is decelerating in the process of step 102 described later when the rear wheel 33 is idling. This routine is terminated without performing the abnormality diagnosis process (steps 102 to 107). This prevents erroneous determination of the vehicle speed sensor 36 from being erroneously determined as a deceleration state when the rear wheel 33 is parked idle. The processing in step 101 serves as an abnormality diagnosis prohibiting means in the claims.
[0023]
On the other hand, if it is determined in step 101 that the center stand 37 is stored, it is determined that no erroneous determination of the deceleration state due to the idling of the rear wheel 33 occurs because the rear wheel 33 is grounded. Then, the abnormality diagnosis process after step 102 is performed as follows.
[0024]
First, in step 102, it is determined whether or not the vehicle is decelerating. The determination at the time of deceleration is, for example, determined at the time of deceleration when the throttle is fully closed and the engine speed is equal to or higher than a predetermined speed. The process of step 102 serves as a traveling state determination means in the claims. If the vehicle is decelerating, the process proceeds to step 103 to determine whether or not a vehicle speed signal is input from the vehicle speed sensor 36. At the time of deceleration, since the vehicle is running, it is normal that the front wheel 34 rotates and a vehicle speed signal is input from the vehicle speed sensor 36. Accordingly, if it is determined in step 103 that the vehicle speed signal is input from the vehicle speed sensor 36, the process proceeds to step 107, where it is determined that the vehicle speed sensor 36 is normal, and this routine is terminated.
[0025]
On the other hand, if it is determined in step 103 that the vehicle speed signal is not input from the vehicle speed sensor 36, the process proceeds to step 104, where it is determined whether or not the state where no vehicle speed signal is input continues for a predetermined time. If the state of no input continues for a predetermined time, the routine proceeds to step 105, where the vehicle speed sensor 36 determines that there is an abnormality, and this routine is terminated. If the vehicle speed signal input state does not reach the predetermined time, it is not determined that the vehicle is decelerating.For example, the engine speed is temporarily increased by racing or the like while the driver stops while supporting the vehicle body. This routine is terminated without determining whether the vehicle speed sensor 36 is normal or abnormal.
[0026]
On the other hand, if it is determined in step 102 that the vehicle is not decelerating, the process proceeds to step 106, where it is determined whether a vehicle speed signal is input from the vehicle speed sensor 36, and if a vehicle speed signal is input, step 107 is performed. If the vehicle speed sensor 36 is determined to be normal and there is no vehicle speed signal input, the cause may be during idling (stopped), so the vehicle speed sensor 36 is determined to be normal / abnormal. This routine is terminated without any processing. The processes in steps 102 to 107 serve as abnormality diagnosis means in the claims.
[0027]
An execution example of the vehicle speed sensor abnormality diagnosis routine described above will be described with reference to the time chart of FIG.
When the center stand 37 is in the support position (period until time t1), the abnormality diagnosis of the vehicle speed sensor 36 is prohibited, so that the judgment condition at the time of deceleration (the throttle is fully closed and the engine rotational speed is a predetermined rotational speed). Even if the above is established, abnormality diagnosis of the vehicle speed sensor 36 is not performed.
[0028]
After that, when the center stand 37 is stored at time t1, the prohibition of abnormality diagnosis of the vehicle speed sensor 36 is canceled, but the abnormality diagnosis execution condition is satisfied during a period (period from time t1 to t2) where it is not determined that the vehicle is decelerating. It is not established, and the normal / abnormality of the vehicle speed sensor 36 is not determined.
[0029]
Thereafter, during the period in which the center stand 37 is stored and it is determined that the vehicle is decelerating (the period from time t2 to t3), the abnormality diagnosis execution condition is satisfied, and the abnormality diagnosis of the vehicle speed sensor 36 is performed. If no vehicle speed signal is input from the vehicle speed sensor 36 for a predetermined time, it is determined that the vehicle speed sensor 36 is abnormal.
[0030]
According to the embodiment (1) described above, since the abnormality diagnosis of the vehicle speed sensor 36 is prohibited when the center stand 37 is in the support position, when the rear wheel 33 is parked, It is possible to prevent erroneous determination of an abnormality of the vehicle speed sensor 36 that should be performed in the deceleration state by erroneously determining that the vehicle is in the deceleration state, and erroneously determining that the normal vehicle speed sensor 36 is abnormal. It can be prevented in advance.
[0031]
In the present embodiment (1), the vehicle speed sensor 36 is provided on the front wheel 34 side so that a vehicle speed signal corresponding to the rotational speed of the front wheel 34 is output. It is possible to prevent the integrated travel distance meter from operating.
[0032]
In the present embodiment (1), the abnormality diagnosis of the vehicle speed sensor 36 is performed at the time of deceleration. For example, the abnormality of the vehicle speed sensor 36 is detected when the engine load is equal to or greater than a predetermined value (greater than the load during idling). The abnormality diagnosis method may be changed as appropriate, for example, diagnosis may be performed.
[0035]
[Embodiment (2)]
In the embodiment (1), the vehicle speed sensor 36 is provided on the front wheel 34 side to output a vehicle speed signal having a frequency corresponding to the rotational speed of the front wheel 34. However, in the embodiment (2) of the present invention, the vehicle speed sensor 36 is illustrated. However, the vehicle speed sensor 36 is installed on the rear wheel 33 side or on the drive system, and a vehicle speed signal having a frequency corresponding to the rotational speed of the rear wheel 33 is output. Other system configurations are the same as in the above embodiment (1).
[0036]
As described above, if the vehicle speed signal is output from the vehicle speed sensor 36 according to the rotational speed of the rear wheel 33, the speed meter and the integrated travel distance meter are activated when the rear wheel 33 is parked. appear.
[0037]
As a countermeasure, in this embodiment (2), the meter ECU 41 executes the meter control routine of FIG. This routine is executed every predetermined time (for example, every 4 ms). First, in step 201, it is determined whether or not the center stand 37 is in the support position, and the center stand 37 is in the support position. If it is determined that the vehicle is parked, the process proceeds to step 202 where a meter stop process is performed to stop the speed display of the speedometer (hold at 0 km / h) and stop the integration operation of the integrated travel distance meter. The process in step 202 serves as meter stop means in the claims.
[0038]
On the other hand, if it is determined in step 201 that the center stand 37 is stored, the process proceeds to step 203 where normal processing is performed and integration with the speed meter is performed according to the vehicle speed signal from the vehicle speed sensor 36. Controls the operation of the mileage meter.
[0039]
According to the embodiment (2) described above, the operation of the speed meter and the integrated mileage meter is stopped when the center stand 37 is in the support position. Thus, even if a vehicle speed signal is output from the vehicle speed sensor 36, it is possible to prevent the speed meter and the integrated travel distance meter from operating.
[0040]
Further, in the present embodiment (2), the vehicle speed sensor 36 is provided on the rear wheel 33 side or the drive system so as to output a vehicle speed signal corresponding to the rotational speed of the rear wheel 33. Even if the idling is erroneously determined as the traveling state and the abnormality diagnosis of the vehicle speed sensor 36 to be performed in the traveling state is performed when the rear wheel 33 is idling, the normal vehicle speed sensor 36 is prevented from being erroneously determined as abnormal. be able to.
[0042]
Further, the engine control ECU 39 may stop the operation of the speed meter and the integrated travel distance meter when the center stand 37 is extended to the support position.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram of an entire system showing an embodiment (1) of the present invention. FIG. 2 is a side view of a motorcycle. FIG. 3 is a flowchart showing a flow of processing of a vehicle speed sensor abnormality diagnosis routine. FIG. 5 is a flowchart showing a flow of processing of a meter control routine according to an embodiment (2) of the present invention.
DESCRIPTION OF SYMBOLS 11 ... Engine, 33 ... Rear wheel (drive wheel), 34 ... Front wheel (non-drive wheel), 36 ... Vehicle speed sensor, 37 ... Center stand, 38 ... Center stand position sensor (stand position detection means), 39 ... Engine ECU ( Traveling state determination means, abnormality diagnosis means, abnormality diagnosis prohibition means), 41... Meter ECU (meter control means, meter stop means).

Claims (4)

In contact with impossible idling state to the non-driven wheels to car parking stop the ground and the driving wheels has a center stand which supports the vehicle body by There floating capable idle state from the ground, the center stand during running in There control device for a motorcycle stored in the vehicle body,
A vehicle speed sensor for detecting the vehicle speed;
-Out based on the engine operating conditions, and determines the running state determining means for determining the vehicle engine output is transmitted to the driving wheel is in the traveling state,
An abnormality that determines whether or not the vehicle speed sensor is abnormal based on a vehicle speed signal that is output from the vehicle speed sensor when the driving wheel is rotated by the driving state determination unit and the vehicle is determined to be in a traveling state Diagnostic means;
Stand position detecting means for detecting whether or not the center stand is extended to a support position for supporting the vehicle body;
When it is determined that the vehicle is in a traveling state by the traveling state determination unit and the center position is detected to be in the support position by the stand position detection unit , the driving wheel is idling. And a failure diagnosis prohibiting means for prohibiting the abnormality diagnosis of the vehicle speed sensor by the abnormality diagnosis means.   2. The motorcycle control apparatus according to claim 1, wherein the vehicle speed sensor is provided on a non-driving wheel side and outputs a vehicle speed signal corresponding to a rotational speed of the non-driving wheel. In contact with impossible idling state to the non-driven wheels to car parking stop the ground and the driving wheels has a center stand which supports the vehicle body by There floating capable idle state from the ground, the center stand during running In a motorcycle control device in which is stored on the vehicle body side,
A vehicle speed sensor for detecting the vehicle speed;
Based on the engine operating state, the engine output is transmitted to the drive wheels, and a traveling state determination unit that determines whether the vehicle is in a traveling state;
A speed meter and / or an integrated travel distance meter is controlled in accordance with a vehicle speed signal output from the vehicle speed sensor when the driving wheel is rotated by the driving state determining means to determine that the vehicle is in a driving state. Meter control means to
Stand position detecting means for detecting whether or not the center stand is extended to a support position for supporting the vehicle body;
When it is determined that the vehicle is in a traveling state by the traveling state determination unit and the center position is detected to be in the support position by the stand position detection unit , the driving wheel is idling. control device for a motorcycle, characterized by comprising a meter stopping means for stopping the operation of the speed meter and / or the accumulated running distance meter determines that. The center stand supports the vehicle body in a state floated drive wheels from the ground to the car parking stop,
4. The motorcycle control apparatus according to claim 3, wherein the vehicle speed sensor is provided on the drive wheel side or the drive system and outputs a vehicle speed signal corresponding to the rotation speed of the drive wheel.

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