KR100250530B1 - Auto-cruise control method of a vehicle - Google Patents

Abstract

PURPOSE: A travel control method of a vehicle is provided to control the travel of a vehicle control, which is suitable to each gearshift step, as a gearshift lever shifts, so that a driving feeling and a fuel consumption are improved. CONSTITUTION: A travel control method comprises: a step(S10) to input the operating signal of a system; a step(S20) to get the operating signal of an acceleration switch; a step(S30) to decide the operating condition of a constant speed travel system switch; a step to decide whether the acceleration switch is switched off(S40); a step(S50) to get the sensing signal of gearshift steps; a step(S60) to get the sensing signal of speed of a vehicle; a step(S70) to get the operating signal of a clutch switch; a step(S80) to decide whether the fixed speed of gearshift steps is equal to the speed of a vehicle; a step(S120) to decide whether the clutch switch is switched on; a step(S81) to decide whether the fixed speed of gearshift steps is slower than the speed of the vehicle; a step(S91) to close a throttle valve by an ECU when the step 81 is contented; a step(S101) to decide whether the fixed speed of gearshift steps is equal to the speed of the vehicle; a step(S111) to proceed to the step 120 when the step 101 is contented; a step(S92) to open the throttle valve then the step 101 is not contented; a step to decide whether the fixed speed of gearshift steps is equal to the speed of the vehicle.

Description

Vehicle speed control

1 is a block diagram of a constant speed traveling system of a vehicle of the present invention.

2 is a flowchart illustrating a control method of a constant speed traveling system of a vehicle according to the present invention.

[Industrial use]

The present invention relates to a constant speed driving control method of a vehicle, and more particularly, to a constant speed driving control method of a vehicle to easily maintain the running speed of the vehicle according to the shift lever position of the vehicle.

[Prior art]

A conventional vehicle regulates a traveling speed corresponding to a speed change stage of a transmission by depressing an accelerator pedal, and there is a vehicle that runs at a speed set at a high speed stage as a constant speed travel device.

Conventional cars are driven according to the operation of the accelerator pedal along with the transmission, the driver's skillful operation can proceed from fine movement to the highest acceleration, and can achieve the speed limit of the vehicle possessed.

In the case described above, the clutch is operated, the gear is operated, and the accelerator pedal is operated.

In addition, the conventional constant speed driving device is a vehicle that can run at a set speed even if the speed is set in the vehicle without driving the accelerator pedal, it is often used for long distance driving.

[Problem trying to solve the invention]

However, a vehicle using a conventional pedal must be stepping on the accelerator pedal during continuous operation, and a vehicle with a constant speed driving device has a problem in that it cannot automatically drive at a constant speed in accordance with a selection stage of a transmission.

Since a pedal vehicle is connected to an accelerator pedal and a throttle valve, the throttle valve closes and cannot speed unless the accelerator pedal is pressed.

This results in the inconvenience that the driver must keep stepping on the accelerator pedal when driving.

A vehicle with a constant speed driving device runs at a constant speed according to a speed setting, but cannot be used for a short distance because it is not driven by a transmission.

[Means to solve the problem]

The present invention has been invented to solve these problems in the related art, and an object of the present invention is to provide a vehicle that runs at a constant speed at a speed suitable for a gear stage according to an operation of a vehicle transmission.

In order to achieve the above object, the constant speed traveling control method of the vehicle according to the present invention is a method for operating a throttle valve according to the sensors and the switch signal, the first step of inputting a system operation signal, and the first A second step of receiving an acceleration switch operation signal after the step; a third step of determining whether the system operation signal input in the first step is on; and a system operation signal determined in the third step is on. A fourth step of determining whether the acceleration switch operation signal input in the second step is Off; a fifth step of receiving a shift stage detection signal when the acceleration switch operation signal determined in the fourth step is off; After the fifth step, the sixth step of receiving the vehicle speed detection signal and the operation signal of the clutch switch is equal to the preset speed according to the speed of the vehicle and the speed change stage input in the sixth step. In the seventh step of judging and the shift speed setting speed determined in the seventh step and the speed of the car are the same, the eighth step of determining whether the clutch switch operation signal is On (On), and the determination in the seventh step In the case where the shift speed setting speed is not the same as the speed of the car, the electronic control apparatus may further determine whether the shift speed setting speed is smaller than the speed of the car. Control the throttle valve to close and again determine whether the set speed is equal to the speed of the car, and if the set speed is not less than the speed of the car in the ninth step, the electronic control device opens the throttle valve. And adjust the throttle valve if the setting speed and the speed of the car are equal to each other in the eleventh step of determining whether the set speed is equal to the speed of the car. Paper and comprises a first step 13 is to proceed from the second step 12 to proceed to the eighth stage, the clutch switch is turned on (On) is determined in the eighth step begins, it.

[Action]

Since the speed is set according to each gear speed, the throttle valve is adjusted to reach the speed set in the gear speed when the gear shift lever is started, and the speed can be maintained continuously when the speed is reached. .

Thus, in the present invention, the accelerator pedal can be used to drive the vehicle, and the vehicle can run at a constant speed without stepping on the accelerator pedal.

In particular, in the present invention, since it is possible to reach a constant speed appropriately for each selection stage without stepping on the accelerator pedal, it is possible to drive with the shift lever.

EXAMPLE

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in more detail.

1 is a block diagram of the system of the present embodiment, in which the system of the present embodiment is installed in the constant speed traveling system switch S1 for operating the system and the accelerator pedal mechanism and is connected when the accelerator pedal is pressed, and disconnected when the accelerator pedal is not pressed. Acceleration switch S2, and vehicle speed sensor S3 for checking the speed of the vehicle installed in the transmission.

In addition, the system of the present embodiment is installed on the clutch mechanism, the clutch switch (S4) is connected when the clutch pedal is pressed down, and disconnected if the clutch pedal is not pressed, and the shift stage detection sensor installed on the transmission lever and detecting the set end of the shift lever ( S5) holds more.

In addition, the system of the present invention detects the operation signal of the constant speed traveling system switch, the operation signal of the acceleration switch, the vehicle speed detection signal of the vehicle speed sensor, the operation switch of the clutch switch, and the shift stage detection sensor. An electronic control unit (ECU) which receives and converts the signals and outputs the converted signals, and an electronic throttle valve B which receives and operates the converted signals sent from the electronic control unit.

Thus, the above-mentioned electronic throttle valve B receives and operates the converted signal sent from the electronic control apparatus.

As shown in FIG. 2, in the constant speed traveling control method of the vehicle of the present embodiment, the determination of the intermittent state of the system operation switch and the determination of the intermittent state of the acceleration switch are compared with the set speed according to the number of gear stages and the speed of the car. And a control step of holding a judgment of the intermittent state of the clutch switch, and a control step of controlling the throttle valve to open and close when it is determined to control the speed in this determination step.

The control method includes inputting an operation signal of the system (S10), receiving an acceleration switch operation signal (S20), and determining whether the operation state of the constant speed traveling system switch (S1) is on (S30). And determining whether the acceleration switch S2 is off (S40), receiving a shift stage detection signal (S50), receiving a vehicle speed detection signal (S60), and receiving a clutch switch operation signal ( S70, determining whether the speed set according to the shift stage and the speed of the vehicle sent by the vehicle speed sensor S3 are the same (S80), and determining whether the clutch switch S4 is on (S120). .

Here, in consideration of the setting value which is not unreasonable according to the gear shift stage, 20 KM / h is set at the first stage, 40 KM / h is set at the second stage, and 60 KM / h is set at the third stage. In the fourth stage, 80 KM / h is set as the setting value, and in the fifth stage, 100 KM / h is set as the setting value.

Of course, the above-described setting may vary depending on the setting.

In addition, in the above-described control method, when the shift stage setting speed and the speed of the vehicle are not the same in step S80, determining whether the shift stage setting speed is smaller than the speed of the vehicle (S81) and this step (S81). If the electronic control device is satisfied to control the throttle valve to close (S91), the step of determining whether the shift stage setting speed and the speed of the car is the same (S101), and if this step (S101) is satisfied In step S111, the control apparatus stops adjusting the throttle valve and proceeds to step S120.

And, if the control method does not satisfy the step S81, the step of adjusting the electronic control device to open the throttle valve (S92), and again determining whether or not the speed of the shift stage setting speed and the difference (S102) It includes.

If the step S101 is not satisfied, the electronic control device adjusts to keep the throttle valve closed.

When the above step S30 is not satisfied, when the above step S40 is not satisfied, or when the above step S120 is satisfied, the process proceeds from the initial state again.

The above step S102 is not satisfied and the electronic control device is adjusted to keep the throttle valve open.

If the above step S102 is not satisfied, the process proceeds to the step of receiving the vehicle speed detection signal again.

By controlling as described above, it is possible to maintain the speed set at the stage of the shift lever.

Of course, when the accelerator pedal is pressed, the system is in an initial ready state, and thus the throttle valve is not operated by the system but is operated by the accelerator pedal.

In addition, when the clutch pedal is pressed, it is ready for initial operation in order to prevent idling of the power shaft.

[effect]

As described above, since the system of the present invention can operate at a constant speed without stepping on the accelerator pedal, the fuel consumption can be saved by setting the fuel consumption in consideration of the improvement in performance.

In addition, since the vehicle is set at an appropriate speed at each gear, the vehicle can be driven only by the gear shift lever.

Moreover, when driving with this system, it is possible to prevent rapid acceleration, and there is no need to step on the accelerator pedal, thereby reducing the driver's fatigue.

Claims (6)

A first step S10 of inputting a system operation signal; A second step (S20) of receiving an acceleration switch operation signal after the first step, a third step (S30) of determining whether the system operation signal input in the first step is On, and the third A fourth step S40 of determining whether the acceleration switch operation signal input in the second step is OFF when the system operation signal determined in the step is ON; and shifting when the acceleration switch operation signal determined in the fourth step is OFF The fifth step (S50) of receiving the detection signal, the sixth step (S60, S70) of receiving the vehicle speed detection signal and the operation signal of the clutch switch after the fifth step and the difference of the car input in the sixth step In the seventh step S80 of determining whether the preset speed is the same according to the speed and the shift stage, and when the shift stage setting speed and the speed of the vehicle determined in the seventh stage are the same, is the clutch switch operation signal On? Determining an eighth step (S120) and the seventh step When the shift speed setting speed and the speed of the car are not the same, the ninth step S81 determines whether the shift speed setting speed is smaller than the speed of the car, and the setting speed is smaller than the speed of the car. If the electronic control device adjusts to close the throttle valve and again determines whether the set speed and the speed of the car is the same (S91, S101), and if the set speed is not smaller than the speed of the car in the ninth step The eleventh step (S92, S102) and the electronic control device is adjusted to open the throttle valve to determine whether the set speed and the speed of the car is the same again, and the set speed and the difference determined in the tenth or eleventh step A twelfth step (S111) of stopping the adjustment of the throttle valve and proceeding to the eighth step if the speeds are the same; And a thirteenth step of proceeding again from a start state when the clutch switch determined in the eighth step is on. The constant speed travel control of the vehicle according to claim 1, further comprising a fourteenth step of adjusting the electronic control device to keep the throttle valve closed if the set speed determined in the tenth step and the speed of the car are not the same. Way. The constant speed travel control of the vehicle according to claim 1, further comprising a fifteenth step of adjusting the electronic control device to continuously open the throttle valve when the set speed determined in the eleventh step is not the same as the speed of the car. Way. The method of claim 1, further comprising: if the system operation switch determined in the third step (S30) is Off, further comprising a sixteenth step of proceeding again in a start state. According to claim 1, If the acceleration switch operation signal determined in the fourth step (S40) is On (On), the constant speed running control method of the vehicle, characterized in that further comprising the step of proceeding again. The method of claim 1, further comprising: an eighteenth step of returning to the sixth step if the clutch switch determined in the eighth step is Off.