JP2004106677A - Speed control method for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a speed control method for a vehicle for reducing a load of a driver by making running speed of the backward running substantially lower than the forward running under a certain condition. <P>SOLUTION: In this speed control method of the vehicle, the running speed during running the vehicle by pulling an accelerator operation member disposed in a steering operation device to the driver side is increased. When the vehicle runs backward and an operation amount of the accelerator operation member is a specific amount x1 or more, the backward running speed of the vehicle is kept constant by keeping a throttle opening at a constant amount y1. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a vehicle speed control method for controlling a traveling speed by accelerating or decelerating a vehicle.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, an accelerator pedal and a brake pedal for accelerating and decelerating an automobile are arranged near the driver's feet, and perform an accelerator operation and a brake operation with a right foot, for example. In recent years, a technique has been developed in which an accelerator lever and a brake lever are arranged on a steering wheel, and the lever is manually operated to control the vehicle speed. In the steering described in the above publication, an accelerator lever and a brake lever are rotatably mounted on a hub disposed inside the rim, and the tip of the lever is rotated with a thumb or forefinger while holding the rim. By doing so, an acceleration / deceleration operation is performed (for example, see Patent Document 1).
[0003]
[Patent Document 1]
JP-A-5-270410 (page 4 and FIGS. 3 and 4)
[0004]
[Problems to be solved by the invention]
However, in the acceleration / deceleration operation device described in the above publication, since the amount of change in the traveling speed with respect to the same accelerator operation amount is the same in the forward traveling and the backward traveling of the vehicle, for example, when the vehicle is traveling backwards such as entering a garage. I had to slow down enough and drive carefully.
[0005]
SUMMARY OF THE INVENTION It is an object of the present invention to provide a vehicle speed control method in which the traveling speed is made lower during forward running than during forward running under certain conditions to reduce the burden on the driver.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, a vehicle speed control method according to claim 1 of the present invention is configured such that when the vehicle is driven backward, an accelerator operation member disposed on a steering operation device is moved to the driver side, that is, the vehicle rearward. A vehicle speed control method for increasing the traveling speed by increasing the throttle opening by pulling the throttle opening side, wherein when the vehicle is traveling backward and the operation amount of the accelerator operation member is a specific amount or more, the throttle control The opening is maintained at a constant amount, whereby the speed of the vehicle when the vehicle travels backward is kept constant.
[0007]
Further, in the vehicle speed control method according to the second aspect of the present invention, the accelerator operation member disposed on the steering operation device is moved in the front-rear direction of the vehicle to change the throttle opening, and thereby the vehicle travels. A speed control method of a vehicle for controlling a speed, wherein a change amount of a throttle opening with respect to a change amount of a specific accelerator operation amount during a reverse running is changed from a change amount during a forward running of the vehicle. .
[0008]
Further, a speed control method for a vehicle according to a third aspect of the present invention is characterized in that a change amount of the throttle opening during the backward running of the vehicle is set smaller than a change amount during the forward running.
[0009]
According to a fourth aspect of the present invention, there is provided a vehicle speed control method, comprising: moving an accelerator operation member provided in a steering operation device in a front-rear direction of a driver to change a throttle opening; A speed control method of a vehicle for controlling a speed, wherein when traveling at a certain steering angle or more, a change amount of a throttle opening with respect to a change amount of a certain accelerator operation amount is determined by forward and backward movement of the vehicle. It is characterized by changing with running.
[0010]
The speed control method for a vehicle according to claim 5 of the present invention is characterized in that the change amount of the throttle opening during the backward running of the vehicle is set smaller than the change amount during the forward running.
[0011]
【The invention's effect】
According to the first aspect of the present invention, when the vehicle is traveling backwards such as in a garage, the traveling speed does not exceed a certain fixed speed. It is reduced.
[0012]
According to the second aspect of the present invention, it is possible to set the amount of change in the traveling speed with respect to a certain accelerator operation amount between the forward traveling and the backward traveling of the vehicle.
[0013]
According to the third aspect of the present invention, the amount of change in the traveling speed with respect to a certain accelerator operation amount during the backward traveling can be set smaller than that during the forward traveling, so that the retreat requiring more attention than the forward traveling. Traveling can be performed slowly and reliably.
[0014]
According to the fourth aspect of the present invention, when the vehicle is running, for example, in a garage, in which the steering angle of the steering operation device is increased, higher attention is required than when the steering angle is small. Therefore, when the steering angle is equal to or more than a specific angle, by changing the amount of change in speed with respect to the amount of change in the amount of steering operation, more reliable driving can be performed.
[0015]
According to the fifth aspect of the present invention, the vehicle travels reliably by setting the speed at the time of reverse travel at a large steering steering angle, which has a special attention, substantially lower than at the time of forward travel. be able to.
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0017]
1 to 4 show an embodiment of the present invention. FIG. 1 is a perspective view showing a vehicle steering operation device used in the present invention, FIG. 2 is a graph showing a correlation between an accelerator operation amount and a throttle opening degree in a first embodiment, and FIG. 3 is a graph showing a correlation in a second embodiment. FIG. 4 is a graph showing the correlation between the accelerator operation amount and the throttle opening degree, and FIG. 4 is a graph showing the correlation between the accelerator operation amount and the throttle opening degree in the third embodiment.
[0018]
As shown in FIG. 1, a vehicle steering operation device 10 used in the present embodiment includes a hub portion 11 attached to a rear end portion of a steering shaft (not shown) disposed in a vehicle front-rear direction, Rim parts 12, 12 formed integrally with the hub part 11 are provided at both left and right ends of the part 11. The hub 11 is provided with various switches such as turn signal switches 13 and 13.
[0019]
The hub portion 11 is formed in a substantially T-shape. A circular center pad 14 is provided at the center, and an airbag (not shown) is stored inside the center pad 14. In the hub portions 11 on both left and right sides of the center pad 14, various horizontally long push-type switches are arranged vertically. The horn switches 15 and 15 are provided at the top, the wiper switches 16 and 16 are provided at the second position, and the headlight switches 17 and 17 and the room light switches 18 and 18 are provided below the wiper switches 16 and 16. It is arranged.
[0020]
The hub portion 11 is formed in a substantially T-shape. A circular center pad 14 is provided at the center, and an airbag (not shown) is stored inside the center pad 14. Further, on the front side of the upper end of the rim portion, that is, on the rear side as viewed from the driver, vertical plate-shaped accelerator operation members 21 and 21 are configured to be slidable in the front-rear direction. In the present invention, a so-called "small steering angle steering system" is assumed, which is capable of turning from the neutral position to a maximum steering angle by a rotation of about 90 ° left and right.
[0021]
Next, a vehicle speed control method according to the first to third embodiments will be described with reference to FIGS.
[0022]
First, a first embodiment will be described with reference to FIG. In the first embodiment, the relationship between the accelerator operation amount and the throttle opening when the vehicle is moving backward is changed with a certain accelerator operation amount as a boundary. In the figure, the horizontal axis indicates the operation amount of the accelerator operation member, and the vertical axis indicates the throttle opening. The solid line shows the correlation between the accelerator operation amount and the throttle opening when the AT position is in the driving state when the vehicle is moving forward, that is, in an automatic vehicle, and the broken line shows the accelerator operation when the AT position is in the reverse state when the vehicle is traveling backward, that is, in an automatic vehicle. 9 shows a correlation between the amount and the throttle opening.
[0023]
When the vehicle is moving forward, as shown by the solid line graph in FIG. 2, as the accelerator operation amount increases, the throttle opening increases substantially in proportion to the accelerator operation amount, and the vehicle speed also increases correspondingly. . Note that in a real vehicle, the gear state and the required torque state affect the correlation between the accelerator operation amount and the throttle opening, and are not necessarily a straight line indicating a proportional relationship as shown by the solid line in FIG. Is shown by a straight line for the sake of simplicity. This is the same for FIGS. 3 and 4.
[0024]
On the other hand, when the vehicle is moving in reverse, the throttle opening increases in proportion to the accelerator operation amount in the initial stage as shown by the broken line graph in FIG. The opening maintains the constant value y1. That is, at and above the point A, the throttle opening does not increase to y1 or more even if the accelerator operation member is operated to a value greater than or equal to x1, and the vehicle speed also becomes a constant value.
[0025]
According to the above-described first embodiment, the traveling speed of the vehicle is suppressed to a certain limit even when the driver performs an unintended accelerator operation during reverse travel where the confirmation consciousness at the time of accelerator operation tends to decrease. By doing so, it is possible to perform a reliable reverse travel.
[0026]
Normally, when the driver drives the vehicle backward, the driver operates the accelerator operation member and the steering operation device while confirming the rear with a door mirror, a rearview mirror, or the like, so that the driver's attention is less distracted than when the vehicle is moving forward. It is easy to fall and concentrate. In addition, when watching the vehicle, the driver is forced to take an unreasonable posture with the body facing backward, and it may be difficult to perform a delicate accelerator operation in this state. Therefore, when the throttle opening is kept constant when the accelerator operation amount becomes equal to or more than a certain fixed amount of accelerator operation, it is possible to perform a safe and secure reverse.
[0027]
Next, a second embodiment will be described with reference to FIG. Also in this figure, the horizontal axis shows the operation amount of the accelerator operation member, and the vertical axis shows the throttle opening. The solid line shows the correlation between the accelerator operation amount and the throttle opening when the AT position is in the driving state when the vehicle is moving forward, that is, in an automatic vehicle, and the broken line shows the accelerator operation when the AT position is in the reverse state when the vehicle is traveling backward, that is, in an automatic vehicle. 9 shows a correlation between the amount and the throttle opening.
[0028]
At the time of forward movement, as shown by the solid line graph in the same figure, as the accelerator operation amount increases, the throttle opening increases substantially in proportion to the accelerator operation amount, and the vehicle speed also increases correspondingly. .
[0029]
On the other hand, when the vehicle is moving backward, the throttle opening is almost proportional to the accelerator operation amount, as shown by the broken line graph in FIG. That is, when the forward operation and the reverse operation are compared, even when the accelerator operation of the same operation amount is performed, the throttle opening degree in the reverse operation is smaller than that in the forward operation, and accordingly, the vehicle speed is also lower. As described above, in order to change the correlation between the throttle opening and the accelerator operation amount between when the vehicle is moving backward and when the vehicle is moving forward, a signal is received from an electronically controlled fuel injection device (hereinafter, referred to as ECCS) or a detent switch of the mission. The output may be changed inside the ECCS.
[0030]
According to the second embodiment described above, when the vehicle is traveling backward when the confirmation consciousness at the time of accelerator operation tends to decrease, the traveling speed of the vehicle is set to be substantially lower than that at the time of forward traveling, so that the vehicle can reliably perform reverse traveling. Can be. As described above, the driver's attention on the accelerator operation is more likely to be distracted when the vehicle is traveling backward than when traveling forward. Therefore, the vehicle can travel more reliably when the speed is reduced when the vehicle is traveling backward.
[0031]
A third embodiment will be described with reference to FIG. 2 and 3, the horizontal axis indicates the operation amount of the accelerator operation member, and the vertical axis indicates the throttle opening. The solid line indicates the forward operation, and the broken line indicates the accelerator operation amount and the throttle operation amount during the reverse operation. The correlation with the degree is shown.
[0032]
In the third embodiment, when the steering angle of the steering operation device is equal to or more than a certain angle and the vehicle is moving backward, the throttle opening with respect to the accelerator operation amount is changed with a certain accelerator operation amount as a boundary. That is, when the driver runs the vehicle almost backward, the conventional accelerator operation member-throttle opening degree correlation is used. When the steering angle exceeds a certain angle, the accelerator operation member-throttle opening degree is changed. Hereinafter, description will be made with reference to FIG.
[0033]
When the vehicle is moving forward, as shown by the solid line graph in FIG. 4, as the accelerator operation amount increases, the throttle opening increases substantially in proportion to the accelerator operation amount, and the vehicle speed also increases correspondingly. . During this forward movement, the throttle opening is proportional to the accelerator operation amount regardless of the magnitude of the steering angle of the steering operation device.
[0034]
On the other hand, when the steering angle of the steering operating device is more than a specific angle during reverse travel, the throttle opening increases in proportion to the accelerator operation amount in the initial stage as shown in the broken line graph of FIG. When the amount is equal to or more than the point B (the accelerator operation amount is x2 and the throttle opening is y2), the inclination of the graph becomes smaller than when the vehicle is moving forward. In other words, when the accelerator operation amount is equal to or more than x2, the amount of change in the throttle opening is smaller when the vehicle is moving backward as compared to when the vehicle is moving forward with respect to a certain amount of accelerator operation, and therefore the vehicle speed is also slower.
[0035]
According to the above-described third embodiment, when a large steering angle such as a garage is required at the time of reverse movement where the confirmation consciousness at the time of accelerator operation tends to decrease, the traveling speed of the vehicle is substantially higher than at the time of forward movement. By setting it late, it is possible to perform a reliable reverse travel. As described above, the driver's attention on the accelerator operation is more likely to be distracted when moving backward than when moving forward. However, when traveling straight back, the driver wants to travel relatively smoothly in a short time, and can cope calmly even if the accelerator operation is erroneous. On the other hand, in a steering operation that requires a large steering angle, such as in a garage, the driver needs to determine various situations, and thus there is a problem that it is difficult to cope with an erroneous operation of the accelerator operation member. However, according to the present embodiment, a reliable steering operation can be performed even when a large steering angle is required.
[0036]
As described above, the present invention has been described by taking the above embodiment as an example, but it is needless to say that the present invention is not limited to this embodiment, and various embodiments are adopted without departing from the gist of the present invention. be able to.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a vehicle steering operation device used in the present invention.
FIG. 2 is a graph showing a correlation between an accelerator operation amount and a throttle opening degree according to the first embodiment.
FIG. 3 is a graph showing a correlation between an accelerator operation amount and a throttle opening degree according to a second embodiment.
FIG. 4 is a graph showing a correlation between an accelerator operation amount and a throttle opening degree according to a third embodiment.
[Explanation of symbols]
10 Steering operation device 21 Accelerator operation member

Claims (5)

A vehicle speed control method for increasing a throttle opening by pulling an accelerator operation member (21) provided on a steering operation device (10) toward a driver to increase a traveling speed when the vehicle travels. ,
When the vehicle is traveling backward and the operation amount of the accelerator operation member (21) is equal to or more than a predetermined value (x1), the vehicle is kept traveling backward by maintaining the throttle opening at a constant amount (y1). A speed control method for a vehicle, wherein the speed control is performed at a speed. A vehicle speed control method for controlling a traveling speed of a vehicle by changing an throttle opening by moving an accelerator operation member (21) provided on a steering operation device (10) in a front-rear direction with respect to a driver,
A speed control method for a vehicle, characterized in that a change amount of a throttle opening with respect to a change amount of a predetermined accelerator operation amount is changed between forward running and reverse running of the vehicle. 3. The vehicle speed control method according to claim 2, wherein the amount of change in the throttle opening during backward running of the vehicle is set smaller than the amount of change during forward running. A vehicle speed control method for controlling a traveling speed of a vehicle by changing an opening degree of a throttle by moving an accelerator operation member (21) provided on a steering operation device (10) in a front-rear direction with respect to driving,
A vehicle speed control method characterized in that when traveling at a specific steering angle or more, the amount of change in throttle opening with respect to the amount of change in a predetermined accelerator operation amount is changed between forward traveling and reverse traveling of the vehicle. The vehicle speed control method according to claim 4, wherein the amount of change in the throttle opening during backward running of the vehicle is set smaller than the amount of change during forward running.

Images