KR20130008380A

KR20130008380A - Method for preventing idleing of tire, and apparatus applied to the same

Info

Publication number: KR20130008380A
Application number: KR1020110069092A
Authority: KR
Inventors: 최진일
Original assignee: 콘티넨탈 오토모티브 시스템 주식회사
Priority date: 2011-07-12
Filing date: 2011-07-12
Publication date: 2013-01-22

Abstract

The present invention discloses a tire idle prevention method and apparatus. In the tire idle prevention method and apparatus according to the present invention, when starting the vehicle on a slippery road surface such as a winter ice road or a sandy road, the number of revolutions of the tires is uniform and the fuel injection amount is generated in a specific tire. Even if the vehicle is not equipped with a driving force control device (eg, Electric Power Steering (EPS) or Transaction Control System (TCS)) that adjusts the vehicle's driving parameters, including the ignition timing and the throttle valve, to lower the engine's engine output. Through the operation of the control unit and the transmission itself, it is made of a configuration for preventing the tire idling by reducing the tire driving force of the vehicle. Accordingly, the present invention can stably start a slippery road surface even in a vehicle without a driving force control device, and can stably start a slippery road surface even when the drive power control device is mounted but fails to function due to a failure. have.

Description

METHOD FOR PREVENTING IDLEING OF TIRE, AND APPARATUS APPLIED TO THE SAME}

The present invention relates to a method and a device for preventing tire idle, and more particularly, when the vehicle starts on a slippery road such as a winter ice road or a sandy road, the number of revolutions of each tire is uniform and the idle occurs on a specific tire. It relates to a tire idle prevention method and apparatus for preventing the.

In general, when a vehicle starts on a slippery road such as snow or rain, a vehicle equipped with EPS (Electric Power Steering) or TCS (Traction Control System) has an excessive driving force so that a part of tires do not idle. To control the driving force.

Referring to FIG. 1, when the wheel sensor 10 mounted on each wheel outputs a sensor measurement signal for measuring a corresponding tire rotation speed, and the sensor measurement signal is determined, a difference between each tire rotation speed occurs. Electric power steering (EPS) or transaction control system (TCS) module 20 operates.

Then, the electric power steering (EPS) or transaction control system (TCS) module 20 adjusts the fuel injection amount, the ignition timing, the throttle valve of the engine through an electronic control unit (ie, an electrical control unit (ECU) 30), or Apply brakes to the drive wheels.

However, in the case of a vehicle in which a failure occurs in the EPS (Electric Power Steering) or the TCS (Traction Control System) module 20 or the vehicle is not equipped with the EPS (Electric Power Steering) or the TCS (Traction Control System) module 20, In order to prevent idling of a tire when starting a vehicle on a slippery road such as a rainy road, there is an inconvenience in that the driver artificially shifts the vehicle starting shift stage to the second straight shift stage.

Accordingly, the present invention has been made to solve the above problems, and an object of the present invention is to uniformize the number of revolutions of each tire when starting the vehicle on a slippery road surface such as a winter ice road or a sandy road. In the event of idling occurs, a driving force control device (e.g., Electric Power Steering (EPS) or TCS (Traction Control System)) that lowers the engine output of the vehicle by adjusting the vehicle driving parameters including fuel injection amount, ignition timing and throttle valve. It is to provide a tire idle prevention method and apparatus for preventing the tire idle by dropping the tire driving force of the vehicle through the operation of the electronic control device and the transmission itself, even if the vehicle is not provided in the vehicle.

In the tire idle prevention method according to the first aspect of the present invention for achieving the above object, the tire from the wheel sensor mounted on each wheel when the electronic control device starts to drive to the first shift stage already set at the start of the vehicle Determining whether the driving force restriction condition is satisfied based on the vehicle driving variable at the start and the sensor measurement signal after receiving the sensor measurement signal for the number of revolutions of the engine, and if the driving force restriction condition is satisfied, in advance than the first shift stage. And shifting to a second speed change stage in which the driving force falls below a predetermined level, thereby executing start control of the vehicle.

Preferably, the driving force limiting condition is whether the first shift stage corresponds to the straight running shift D and the first straight shift stage, whether the starting speed of the vehicle falls below a predetermined threshold starting speed, Whether the acceleration measurement value provided from the accelerator position sensor falls below a predetermined threshold acceleration measurement value, whether the rotation speed difference between each tire exceeds the predetermined error range, and whether the driving force control device is applied to the vehicle. It is characterized by including.

Preferably, the rotation speed difference between the tires is a difference between the tire rotation speed of the left wheel and the tire rotation speed of the right wheel among the current driving wheels, or the tire rotation speed of the left wheel and the tire rotation speed of the right wheel of the rear drive wheels. It is characterized by including the difference between.

Preferably, the driving force control device includes an electric power steering (EPS) or a transaction control system (TCS).

Preferably, when the first shift stage is a first straight shift stage, the second shift stage is set as a second straight shift stage.

In addition, the tire idle prevention device according to the second aspect of the present invention for achieving the above object, the sensor measurement for measuring the tire rotation speed of each wheel when starting to start the first shift stage already set at the start of the vehicle On the basis of the wheel sensor for outputting the signal, the sensor measurement signal, and the vehicle driving variable at the start, it is determined whether the driving force limitation condition is satisfied. And an electronic controller for shifting to a second speed change stage in which driving force is lowered to execute starting control of the vehicle.

Preferably, the electronic control apparatus is a first determination unit for determining whether the first shift stage corresponds to the straight running shift (D) and the first straight shift stage of the driving force limitation condition, the vehicle of the driving force limitation condition A second judging unit for determining whether the starting speed of the vehicle falls below a predetermined threshold starting speed, and a second determining unit for determining whether an acceleration measurement value provided from an accelerator position sensor among the driving force limitation conditions falls below a predetermined threshold acceleration measurement value. 3 judging section, a fourth judging section for judging whether a difference in rotational speed between the tires among the driving force restriction conditions exceeds a predetermined error range, and determining whether a driving force control device is applied to the vehicle among the driving force restriction conditions. If the fifth determination unit and the driving force limitation condition is satisfied, the first shift stage And a shift control unit for shifting to the second shift stage.

Preferably, the determination of the difference in rotation speed between the tires is performed based on an error value made within a predetermined reference time.

Therefore, in the present invention, when starting the vehicle on a slippery road such as a winter ice road or a sandy road, the number of revolutions of the tires is uniform and the fuel injection amount, the ignition timing and the throttle valve Rotation of each tire in the electronic control unit, even if the vehicle is not equipped with a driving force control device (e.g., Electric Power Steering (EPS) or Transaction Control System (TCS)) that adjusts the vehicle's driving parameters to reduce the engine's engine output By detecting the idling of a particular tire due to the uniform number, it implements a function to reduce the engine output of the vehicle by adjusting various vehicle driving parameters, so that even on vehicles without a driving force control device, the vehicle can stably start a slippery road surface. The drive force control device Even if it does not function the advantage of starting a slippery road surface reliably.

1 is a view showing a tire idle prevention device according to the prior art,
2 is a view showing an embodiment of the tire idle prevention device according to the invention and
3 is a view illustrating an operation process of the tire idle prevention device of FIG. 2 as an example.

Hereinafter, a preferred embodiment of a tire idle prevention device according to the present invention with reference to the accompanying drawings in more detail.

2 is a view showing an embodiment of the tire idle prevention device according to the present invention. As shown by way of example only in FIG. 2, the tire idle prevention device is provided with a driving force control device such as EPS (Electric Power Steering) or TCS (Traction Control System) even when a vehicle or a failure occurs in the driving force control device. When starting the vehicle on a slippery road surface such as a winter ice road or a sandy road, the number of rotations of the tires is uniformly uniform to prevent idling from a specific tire.

Specific configuration of the tire idle prevention device for this purpose, the at least one or more of the wheel sensor 100 for measuring the number of tire revolutions of each wheel in the vehicle and the start of driving at the first shift stage that was already set at the start of the vehicle Limiting driving force preset based on sensor measurement signals received from the wheel sensor 100 and vehicle driving parameters at the start (e.g., a shift speed, starting speed, acceleration measurement value, rotation speed of each tire, etc.) And an electronic control apparatus 200 for controlling shifting to a second shift stage in which driving force is lowered to a predetermined level or less than a predetermined first shift stage when it is confirmed that the condition is satisfied after the determination of whether the condition is satisfied. Equipped with configuration.

Here, the first gear shift stage corresponds to a first straight gear shift stage (commonly referred to as 'stage 1') set at the start of the vehicle, and the second gear shift stage has a lower driving force than the first straight gear shift stage. It is possible to judge that it corresponds to two straight shift stages (commonly referred to as 'two stages').

Unlike the braking of the engine output control or the driving of the vehicle by using the conventional driving force control device through the configuration of the present invention, the slippery road surface at the start of the vehicle through the interaction between the electronic control device 200 and the transmission When it is determined that it is detected, it is possible to control the shift to the second stage immediately to start the vehicle stably or to reduce the torque by limiting the torque to prevent the idling of the tire generated.

That is, even when the vehicle is not provided with a driving force control device or provided with a driving force control device, even when a failure occurs, the present invention can implement a function capable of stably starting a vehicle on a slippery road surface.

More specifically, the above-mentioned driving force limitation condition refers to whether the shift stage at the start of the vehicle is a straight running shift D and is set at 'first stage' (in the case of the first stage, the tire idling due to the large driving force). Is a condition that takes into account this), whether the vehicle's departure speed falls below a predetermined threshold departure speed (a condition for checking whether the vehicle is stationary), and an acceleration measurement value provided from the accelerator position sensor is predetermined. It corresponds to whether it is equal to or less than the acceleration measurement value, whether the rotation speed difference between each tire corresponds to the predetermined error range or more, and whether the driving force control device is applied to the vehicle.

Here, when all of the driving force limiting conditions are satisfied, the electronic control apparatus 200 determines that the vehicle is located on a slippery road surface, and reduces the driving force according to the shift control to 'stage 2' to achieve a stable start of the vehicle.

However, when any one of the driving force limitation conditions is not satisfied, the electronic control apparatus 200 determines that the vehicle is in a normal road surface state and controls the start of the vehicle according to the shift control maintaining the first stage.

In addition, the difference in the rotation speed between the tires determined by the electronic controller 200 is a difference between the tire rotation speed of the left wheel and the tire rotation speed of the right wheel among the front wheel driving wheels, or the tire rotation speed of the left wheel of the rear wheel driving wheels. This is the difference between the number of tires on the right wheel.

In some cases, the difference in tire rotation speed between the front wheel drive wheel and the rear wheel drive wheel may also be considered as a parameter for determining the road surface condition.

3 is a view illustrating an operation process of the tire idle prevention device of FIG. 2 as an example. As shown only as an example in FIG. 3, the tire idling prevention method satisfies the driving force limitation condition to control the start of the vehicle without starting the tire by idling by checking the road surface state in which the vehicle is started and in contact with the tire of the vehicle. It proceeds to check whether it is (S1).

The driving force limiting condition mentioned in step S1 proceeds step by step. First, when the vehicle is started, it is checked whether the shift is set in the D shift stage and whether the identified shift stage is 'stage 1' (S3).

If the condition of step S3 is satisfied, it is checked whether the vehicle is in the stopped state by checking whether the vehicle's starting speed is less than a predetermined threshold starting speed (S5).

If the condition of step S5 is satisfied, the process proceeds to the next step and checks whether the acceleration measurement value provided from the accelerator position sensor is less than the predetermined threshold acceleration measurement value (S7).

If the condition of step S7 is satisfied, the electronic control apparatus 200 receives a sensor measurement signal from the wheel sensor 100 mounted on each wheel, and then uses a sensor measurement signal received to determine a difference in rotation speed between the tires in advance. Check whether the error range is exceeded (S9).

That is, if the difference in the number of revolutions of each tire is within a predetermined error range, the state of the road surface on which the vehicle is located is determined to be normal. If the difference in the number of revolutions between the tires exceeds the predetermined error range, the state of the road surface on which the vehicle is located is slippery. Determined to be.

Thereafter, when the condition of step S9 is satisfied, it is checked whether the vehicle is provided with the driving force control device or if the vehicle does not perform its function even when the driving force control device is provided (S11).

When all the above-mentioned conditions are met, the electronic control apparatus 200 controls the start of the vehicle by shifting the starting shift stage of the vehicle from one stage to two stages (S13).

On the contrary, if none of the above-mentioned conditions is satisfied, the electronic control apparatus 200 controls the start of the vehicle by continuing the start shift stage of the vehicle to one step.

Departure of the vehicle is made through the setting (S17).

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the present invention as defined by the following claims It can be understood that

In addition, the present invention provides a fuel injection amount, ignition timing and throttle valve when the tires are uniformly rotated when starting the vehicle on a slippery road such as a winter ice road or a sandy road. Even if the vehicle is not equipped with a driving force control device (for example, an electric power steering (EPS) or a transaction control system (TCS)) that reduces the engine output of the vehicle by adjusting a vehicle driving variable to be included, only the electronic control unit and the transmission itself In order to prevent tire idling by reducing the tire driving force of the vehicle by performing the operation, it is an invention that is industrially applicable because not only is there a sufficient possibility of commercialization or sales, but also it can be clearly implemented in reality. .

100: wheel sensor 200: electronic control device

Claims

When the electronic controller starts driving to the first shift stage set at the start of the vehicle, the vehicle driving variable and the sensor at the start of the vehicle are received after receiving a sensor measurement signal for the number of revolutions of the tire from a wheel sensor mounted on each wheel. Determining whether the driving force limitation condition is satisfied based on the measurement signal; And
And starting the control of the vehicle by shifting to a second shift stage in which driving force is lowered to a predetermined level or less than the first shift stage when the driving force limitation condition is satisfied.

The method according to claim 1,
The driving force limitation condition may include whether the first shift stage corresponds to the straight traveling shift D and the first straight shift stage, whether the starting speed of the vehicle falls below a predetermined threshold starting speed, and an accelerator position sensor. Whether the acceleration measurement provided corresponds to less than a predetermined threshold acceleration measurement, whether the rotational difference between the tires exceeds a predetermined error range, and whether a driving force control device is applied to the vehicle. Tire idle prevention method.

The method of claim 2,
The difference in rotation speed between the tires includes a difference between the tire rotation speed of the left wheel and the tire rotation speed of the right wheel among the current driving wheels, or the difference between the tire rotation speed of the left wheel and the tire rotation speed of the right wheel among the rear wheels. Tire idle prevention method characterized in that.

The method of claim 2,
The driving force control device is a tire idle prevention method comprising an EPS (Electric Power Steering) or TCS (Traction Control System).

The method according to claim 1,
And the second shift stage is set as a second straight shift stage when the first shift stage is a first straight shift stage.

A wheel sensor which outputs a sensor measurement signal for measuring tire rotation speed of each wheel when starting to drive to a first shift stage that is already set at the start of the vehicle; And
It is determined whether the driving force limiting condition is satisfied based on the sensor measurement signal and the vehicle driving variable at the start, and when the driving force limiting condition is satisfied in the determination result, the second shifting stage in which the driving force drops below a predetermined level than the first shifting stage. And an electronic control device configured to perform a start control of the vehicle by shifting to the tire.

The method of claim 6,
The electronic control apparatus may include: a first determining unit configured to determine whether the first shift stage corresponds to a straight running shift D and a first straight shift stage among the driving force limitation conditions;
A second judging unit for judging whether a starting speed of the vehicle falls below a predetermined threshold starting speed among the driving force limitation conditions;
A third determination unit for determining whether an acceleration measurement value provided from an accelerator position sensor among the driving force limiting conditions is less than a predetermined threshold acceleration measurement value;
A fourth judging unit for judging whether the rotation speed difference between the tires among the driving force limiting conditions exceeds a predetermined error range;
A fifth determination unit for determining whether a driving force control device is applied to the vehicle among the driving force limitation conditions; And
And a shift control unit for shifting the first shift stage to the second shift stage when the driving force limiting condition is satisfied.

The method of claim 7, wherein
The determination of the difference in the number of revolutions between the tires is carried out on the basis of an error value made within a predetermined reference time, tire idle prevention device.