JPH053382Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field] The present invention relates to an accelerator control device for a vehicle.

[Conventional technology] Of the mechanical automatic systems that achieve both easy driving and fuel efficiency, only the clutch is operated manually when starting, and after driving, the driver specifies the target gear using the selector lever or uses the auto range. A semi-automatic system is known in which, if specified, all operations are automatically performed by a control unit as the vehicle speed increases (for example, see Japanese Utility Model Application Publication No. 139830/1983 by the present applicant).

On the other hand, when driving a vehicle, an unskilled person may accidentally press the brake pedal and the accelerator pedal incorrectly, resulting in a serious accident. In such a case, the control unit of the semi-automatic system described above cannot handle the erroneous depression of the pedal.

Furthermore, Japanese Utility Model Application Publication No. 61-31928 discloses a technology that reduces engine output when the accelerator pedal is pressed by mistake. Since this is the time when you have to step on the pedal, simply reducing the engine output is not enough as the vehicle is still running.

[Object of the invention] Therefore, an object of the invention is to provide an accelerator control device for a vehicle that controls the vehicle to be safe when the brake pedal and the accelerator pedal are depressed incorrectly.

[Principle of the invention] This invention recognizes that there is an essential difference between the operation of pressing the brake pedal and the accelerator pedal, and in particular, the operation of pressing the brake pedal during sudden braking and the operation of pressing the accelerator pedal in all cases. This was done based on the principle that there is a clear difference between the two, and therefore it is possible to determine that the driver accidentally depressed the accelerator pedal while attempting to brake suddenly.

[Configuration of the invention] According to the invention, there is provided an accelerator opening detection means for detecting the opening of the fuel injection pump to the accelerator lever based on the amount of depression of the accelerator pedal, a vehicle speed detection means, and a vehicle speed detection means for detecting the opening of the accelerator lever. An accelerator control device for a vehicle having an accelerator opening control means for controlling a service brake external operating valve, a warning lamp, an accelerator opening signal from the accelerator opening detection means and a vehicle speed signal from the vehicle speed detection means. a control unit that outputs an activation signal to the service brake external activation valve and alarm based on the accelerator opening signal, and the control unit calculates an accelerator operation speed from the accelerator opening signal and sets the calculated accelerator operation speed as a reference. If the accelerator opening is greater than the reference value, the accelerator opening is compared with the reference value, and if the accelerator operation speed is greater than the reference value and the accelerator opening is smaller than the reference value, the accelerator fully closed control signal is generated. It has the function of outputting this to the accelerator opening control means, opening the service brake external operating valve to brake the vehicle, and operating an alarm.

[Description of Effects] Therefore, when applying the brake, the driver takes his foot off the accelerator pedal, so the accelerator opening degree is smaller than the reference value. When the driver depresses the accelerator pedal with the intention of depressing the brake pedal, the accelerator operation speed of the accelerator pedal increases, so at that time, the accelerator opening degree is reduced, the service brake is activated, and the alarm is activated.

Therefore, since the vehicle decelerates quickly, accidents can be prevented.

[Preferred Embodiment] When implementing the present invention, it is preferable to use a known accelerator opening sensor as the accelerator opening detection means.

When implementing the present invention, it is preferable to use a step motor or an electronic governor as the accelerator opening control means.

In implementing the invention, in the case of vehicles with semi-automatic systems, it is preferred to use a control unit for the entire system.

[Examples] Examples of the present invention will be described below with reference to the drawings.

In FIG. 1, a transmission 3 connected to an engine 1 via a clutch 2 is provided with a vehicle speed sensor 4 that detects vehicle speed from the rotational speed of a countershaft (not shown).

A drive arm 7 of a step motor 6, which is an accelerator opening control means, is connected to an accelerator lever 5 of a fuel injection pump (not shown) of the engine 1 via a link 8. The opening degree of the accelerator lever 5 can be controlled by

On the other hand, an accelerator pedal 9 (not shown) provided in the driver's cabin is provided with a known accelerator opening sensor 10, which is an accelerator opening detection means for detecting the instruction opening to the accelerator lever based on the amount of pedal depression. The valve 11 is provided with a brake pedal 12 for operating the valve. Air lines L1 and L2 connecting the service brake valve 11 to an air tank and a brake booster (not shown) are provided with a bypass line L3, and a service brake external operation valve 13 is provided on the bypass line L3. The vehicle speed sensor 4, accelerator opening sensor 10, step motor 6, and service brake external operating valve 13 are each controlled by a control unit (in the semi-automatic system described above, a control unit that controls the entire system can be used). ) 16, and the control unit 16 has an alarm lamp (and or an alarm buzzer)
14 and a reset button 15 are connected.

This control unit 16 receives the accelerator opening signal θ from the accelerator opening sensor 10 and the vehicle speed sensor 4.
Based on the vehicle speed signal V from It's becoming like that.

Next, the operation will be explained mainly with reference to FIG.

In FIG. 2, the control unit 16 reads the accelerator opening signal θ from the accelerator opening sensor 10 (step S1), calculates the accelerator operation speed dθ/dt (step S2), and then calculates the accelerator operation speed dθ/dt (step S2). It is determined whether the speed dθ/dt is greater than a reference value (dθ/dt)o (step S3). YES
If so, it is determined whether the accelerator opening degree θ is larger than a reference accelerator opening degree θ1 which is close to the fully closed accelerator (step S4). In the case of NO, that is, when the accelerator opening degree θ is smaller than or equal to the reference accelerator opening degree θ1, that is, when the accelerator opening degree is near zero, an accelerator fully closed control signal is output to the step motor 6, and the drive arm 7 is actuated. Reduce the stroke and fully close the accelerator (step
S5), to the service brake external actuation valve 13.
It outputs an ON signal and opens, guides the air in airline L1 directly to the brake booster via airline L2, brakes the vehicle (step S6), outputs an ON signal to alarm lamp 14, and lights alarm lamp 14. to warn the driver that the brake pedal 12 and accelerator pedal 9 are pressed incorrectly (step
S7). Next, it is determined whether the vehicle speed has reached zero based on the vehicle speed signal V from the vehicle speed sensor 4 (step S8), and if YES, a control signal is output to the step motor 6 to release the fully closed accelerator. (Step S9), sends an OFF signal to the service brake external operating valve 13 and closes it (Step S10).
An OFF signal is output to the alarm lamp 14 to turn it off (step S11), and the process returns to step S1. Therefore, when the brake pedal 12 and the accelerator pedal 9 are pressed incorrectly, the accelerator is fully closed and the service brake is activated to brake and stop the vehicle, thereby preventing danger.

If step S3 is NO or step S4 is YES, it is determined that the accelerator pedal 9 has been depressed normally, and an accelerator opening control signal according to the accelerator opening map shown in FIG. 3 is output to the step motor 6. (step S12) and return to step S1.

In the control mode described above, steps S6 and S10 may be deleted, that is, the service brake may not be used, and step S8 may be read as "Whether or not the reset button 15 is turned on."

[Effects of the invention] As described above, the invention provides the following excellent effects.

(i) Since the mistake in pressing the brake pedal and the accelerator pedal is determined based on the accelerator opening degree and accelerator operation speed, the determination is reliable and can be clearly distinguished from acceleration operations while driving.

(ii) Since the service brake is activated, the vehicle can be quickly decelerated and stopped, which is safe.

(iii) An alarm can be used to notify the driver, and the driver can immediately learn of the mistake.

[Brief explanation of the drawing]

FIG. 1 is an overall configuration diagram showing an embodiment of the present invention;
FIG. 2 is a control flowchart, and FIG. 3 is an accelerator opening map. 4... Vehicle speed sensor, 5... Accelerator lever, 6
...Step motor, 9...Accelerator pedal, 1
0...Accelerator opening sensor, 12...Brake pedal, 16...Control unit.

Claims (1)

[Scope of utility model registration request] A vehicle comprising an accelerator opening detection means for detecting an opening degree instructed to an accelerator lever of a fuel injection pump based on the amount of depression of an accelerator pedal, a vehicle speed detection means, and an accelerator opening degree control means for controlling an opening degree of the accelerator lever. The accelerator control device includes a service brake external activation valve, a warning lamp,
and a control unit that outputs an activation signal to the service brake external activation valve and the alarm based on the accelerator opening signal from the accelerator opening detection means and the vehicle speed signal from the vehicle speed detection means, the control unit Calculate the accelerator operating speed from the accelerator opening signal, compare the calculated accelerator operating speed with a reference value, and if it is greater than the reference value, compare the accelerator opening with the reference value, and determine whether the accelerator operating speed is the reference value. outputs an accelerator fully closed control signal to the accelerator opening control means, and opens a service brake external operating valve to brake the vehicle when the accelerator opening is smaller than the reference value;
An accelerator control device for a vehicle, characterized in that the device also has a function of activating an alarm.