KR20210091621A - Vehicle EOL(End Of Line) Calibration Method - Google Patents

Abstract

The present invention relates to a vehicle EOL calibration apparatus and a method for performing a driving-related control using at least one of a plurality of vehicle control apparatuses, comprising: an input unit receiving a start signal including a command to perform EOL calibration for a plurality of shift stages of an automatic transmission; and a control unit configured to transmit a plurality of progress signals for a plurality of progress steps of the EOL calibration to an automatic transmission control device when the input unit receives the start signal to perform the EOL calibration, and outputting a progress status of the EOL calibration using the progress signals.

Description

Vehicle EOL Calibration Apparatus and Method {Vehicle End Of Line (EOL) Calibration Method}

The present invention relates to a vehicle EOL calibration apparatus and method for EOL calibration of an automatic transmission of a vehicle.

Since the automatic transmission automatically adjusts the gear shift according to the accelerator pedal and vehicle speed, it is important to minimize shift shock.

In order to automatically measure the air filling time and the gap pressure according to the gap deviation between the clutch and brake of the target automatic transmission in the automatic transmission control device reset at the factory of the automatic transmission, and to store these values as initial values in the automatic transmission control device An end of line (EOL) calibration method is applied.

The same applies when the automatic transmission control device needs to be replaced due to a failure of the automatic transmission control device.

In civil automobiles, EOL calibration is performed using a separate diagnostic device at the service center when a problem occurs with the automatic transmission or automatic transmission control device during factory shipment and during vehicle operation after the production of the first automatic transmission.

However, in a military combat vehicle such as a tank, if a shift shock occurs during emergency operation, it is required to perform EOL calibration by the vehicle itself.

In addition, even if the automatic transmission control device is replaced without disassembling the automatic transmission in the vehicle for urgent operation when the automatic transmission control device fails, EOL calibration is equally required.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a vehicle EOL calibration apparatus and method capable of performing EOL calibration for a plurality of shift stages of an automatic transmission by the vehicle itself.

According to one aspect of the present invention, a vehicle EOL calibration apparatus is a vehicle control apparatus that performs driving-related control using at least one of a plurality of vehicle control apparatuses, and includes a plurality of automatic transmission devices. an input unit for receiving a start signal including a command for performing EOL calibration for shift stages; and when the input unit receives the start signal, a plurality of progress signals for a plurality of progress steps of the EOL calibration are transmitted to the automatic transmission control device to perform EOL calibration, and the progress status of EOL calibration using the progress signals It includes a control unit for outputting.

A vehicle calibration method according to one aspect for realizing the object of the present invention is a vehicle control method for performing driving-related control using at least one of a plurality of vehicle control devices, and includes a plurality of shifts of an automatic transmission. receiving a start signal including a command to perform EOL calibration for singular numbers; performing EOL calibration by transmitting a plurality of progress signals for a plurality of progress steps of EOL calibration to an automatic transmission control device when the start signal is received; and outputting the progress status of the EOL calibration using the progress signals.

The step of receiving the start signal may include: determining whether the state of the vehicle meets the execution condition for executing the EOL calibration; outputting a guide signal for inputting the start signal when the state of the vehicle meets the execution condition; and receiving the start signal through any one or more of a plurality of manipulation devices capable of manipulating the vehicle.

The performing of the EOL calibration may include transmitting a pressure signal for applying pressure to a plurality of brakes and a plurality of clutches of the automatic transmission corresponding to the shift stages of the automatic transmission to the automatic transmission control device. ; measuring a key point pressure and flow rate charging time of the brakes and the clutches corresponding to the shift stage; and storing the kiss point pressure and flow rate charging time for each shift stage in the automatic transmission control device.

The outputting the progress status may include: identifying a plurality of brakes and a plurality of clutches corresponding to the shift stages in which EOL calibration is in progress through the progress signals; outputting an EOL calibration progress status of the brakes and the clutches in progress; determining whether EOL calibration of the brakes and the clutches corresponding to the respective shift stages has been completed; and outputting an EOL calibration completion signal when it is determined that the EOL calibration of the brake and the clutch corresponding to the last number of shift stages is completed.

The progress signals may include unique identification information of the brake or the clutch for which EOL calibration is in progress.

The outputting of the EOL calibration progress status may include outputting the EOL calibration progress status using an output device provided in the vehicle.

The method may further include receiving a stop signal from the driver through any one or more of a plurality of manipulation devices capable of manipulating the vehicle.

And, prior to the step of receiving the start signal, determining whether the automatic transmission and the automatic transmission control device are abnormal; and when an abnormality is found in at least one of the automatic transmission and the automatic transmission control device, any one of a notification to the driver of replacement of at least one of the automatic transmission control device and the automatic transmission and a notification of the need for EOL calibration of the automatic transmission It may further include the step of outputting.

According to the vehicle EOL calibration apparatus and method according to an embodiment of the present invention,

First, since the vehicle itself can perform EOL calibration for a plurality of shift stages of the automatic transmission, it is possible to quickly respond to an emergency situation.

Second, since the EOL calibration can be performed using the operation devices provided in the vehicle, an additional device is not required and thus can be easily applied.

Third, it is easy to grasp the progress state because unique identification information that can distinguish each of the brake and clutch is used.

Fourth, by using the progress signal, it is possible to inform the user of the progress status, such as in progress, failure, and completion.

Fifth, since the output devices provided in the vehicle are used, an additional device is not required to output the progress status.

Sixth, it is possible to stop the EOL calibration by using the operation devices provided in the vehicle, so that it is possible to quickly respond to an emergency situation.

Seventh, since it measures the presence or absence of abnormalities in the automatic transmission and automatic transmission control device, it is possible to quickly identify an abnormality.

1 is a conceptual diagram schematically illustrating a vehicle EOL calibration apparatus according to an embodiment of the present invention.
2 is a flowchart illustrating a vehicle EOL calibration method according to an embodiment of the present invention.
FIG. 3 is a flowchart for explaining a process of receiving the start signal shown in FIG. 2 .
FIG. 5 is a flowchart for explaining a process of outputting the progress shown in FIG. 2 .
6 is a graph showing a signal flow while the vehicle EOL calibration method of the present invention is in progress.
FIG. 7 is an enlarged graph of part A of FIG. 6 .
FIG. 8 is an enlarged graph of part B of FIG. 6 .

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings. In this case, it should be noted that in the accompanying drawings, the same components are denoted by the same reference numerals as much as possible. In addition, detailed descriptions of well-known functions and configurations that may obscure the gist of the present invention will be omitted. For the same reason, some components are exaggerated, omitted, or schematically illustrated in the accompanying drawings.

1 is a conceptual diagram schematically illustrating a vehicle EOL calibration apparatus according to an embodiment of the present invention.

The present invention relates to a vehicle EOL calibration apparatus for performing driving-related control using at least one of a plurality of vehicle control apparatuses.

The vehicle EOL calibration apparatus 100 of the present invention includes an input unit 110 and a control unit 120 .

The input unit 110 receives a start signal including a command to perform EOL calibration for a plurality of shift stages of the automatic transmission from the driver.

When the input unit 110 receives the operation signal, the control unit 120 transmits a plurality of progress signals for a plurality of progress steps of the EOL calibration to the automatic transmission control device to perform EOL calibration, and uses the progress signals to perform EOL calibration. Displays the progress of calibration.

FIG. 2 is a flowchart for explaining a vehicle EOL calibration method according to an embodiment of the present invention, FIG. 3 is a flowchart for explaining a process of receiving the start signal shown in FIG. 2 , and FIG. 5 is shown in FIG. This is a flowchart to explain the process of outputting the progress made.

1 and 2, the present invention relates to a vehicle calibration method for performing driving-related control using at least one of a plurality of vehicle control devices,

The control unit 120 determines whether the automatic transmission and the automatic transmission control device are abnormal (step S110).

If an abnormality is found in any one or more of the automatic transmission and the automatic transmission control device in step S110,

The control unit 120 outputs any one of a replacement notification for at least one of the automatic transmission control device and the automatic transmission and a notification of EOL calibration of the automatic transmission required to the driver based on step S110 (step S120).

When an error occurs in the automatic transmission control device, an automatic transmission control device replacement notification is output. When an automatic transmission error occurs, an automatic transmission replacement notification is output. If it is determined that the automatic transmission EOL calibration is required, an EOL calibration required notification is issued. print out

Even when replacing the automatic transmission and automatic transmission control device, EOL calibration is required, and EOL calibration is required to improve the accuracy of automatic transmission even without replacing the automatic transmission and automatic transmission control device.

If the automatic transmission or automatic transmission control device is replaced by the notification in step S120 or EOL calibration of the automatic transmission is required,

The driver inputs a start signal including a command to perform EOL calibration for a plurality of shift stages of the automatic transmission to the input unit 110 (step S130 ).

When the input unit 110 receives the start signal, the control unit 120 transmits a plurality of progress signals for a plurality of progress steps of the EOL calibration to the automatic transmission control device to perform the EOL calibration (step S140).

Then, the controller 120 outputs the progress status of the EOL calibration using the progress signals (step S150).

A process of receiving a calibration start signal (step S130) will be described in detail with reference to FIGS. 1 and 3 .

The controller 120 determines whether the state of the vehicle meets the execution conditions for executing the EOL calibration (step S131).

If the state of the vehicle meets the execution condition in step S131,

The control unit 120 outputs a guide signal for input of the start signal so that the driver can input the start signal (step S132).

In addition, the input unit 110 receives a start signal from the driver through any one or more of a plurality of manipulation devices capable of manipulating the vehicle.

For example, in step S131, the execution condition is a state in which the transmission gear is neutral, the engine speed is maintained at 750 RPM or higher, and the vehicle can be maintained in an immovable state while the engine is on, such as a state in which the parking brake is engaged. means

Here, the reason that the engine must be turned on in the running condition is that when the speed of the engine serving as a pump is changed, an accurate keypoint pressure value and flow rate charging time cannot be measured.

Therefore, EOL calibration must be performed with the vehicle stopped and the engine turned on.

Execution conditions are not limited thereto and may vary depending on settings.

In step S132, the guide signal output for the start signal input may be output using any one of the output devices provided in the vehicle.

A process (step S140) of performing EOL calibration will be described in detail with reference to FIGS. 1 and 4 .

The control unit 120 transmits a pressure signal for applying pressure to the plurality of brakes and the plurality of clutches of the automatic transmission corresponding to the shift stages of the automatic transmission to the automatic transmission control device (step S141).

The control unit 120 measures the key point pressure and flow rate charging time of the brakes and the clutches corresponding to the shift stages (step S142).

The control unit 120 stores the key point pressure and flow rate charging time for each shift stage in the automatic transmission control device (step S143).

Here, the key point pressure is the pressure generated by the operation of the solenoid valve by the pressure signal generated by the automatic transmission control device, and is the pressure measured when the piston of the clutch cylinder is pushed to contact the clutch.

And, the flow rate charging time represents the time the pressure flows into the clutch cylinder until it pushes the piston and touches the clutch.

The process of outputting the progress status (step S150) will be described in detail with reference to FIGS. 1 and 5 .

The control unit 120 identifies a plurality of brakes and a plurality of clutches corresponding to the number of shift stages in which EOL calibration is in progress through the progress signals (step S151).

The controller 120 outputs the EOL calibration progress status of the brakes and clutches in progress (step S152).

The controller 120 determines whether the EOL calibration of the brakes and the clutches is completed (step S153).

If it is determined in step S153 that the EOL calibration of the brake and clutch corresponding to the last shift stage is completed, the controller 120 outputs an EOL calibration completion signal (step S154).

In step S151, the progress signal includes unique identification information of the brake or clutch for which calibration is in progress.

Here, the plurality of brakes and the plurality of clutches each have unique identification information.

For example, if you have 5 breaks, each can have a number from 0 to 4.

Accordingly, the brake and clutch corresponding to each shift stage can be distinguished, so that the EOL calibration process can be easily grasped.

The output of the progress status in step S152 outputs the EOL calibration progress status to the driver using an output device provided in the vehicle.

For example, it may be output through a plurality of notifications provided in the vehicle, and may be output using a display device such as AVN and HUD.

Additionally, if a situation occurs in which EOL calibration must be stopped while steps S130 to S150 are in progress, the driver may input a stop signal through any one or more of a plurality of manipulation devices capable of manipulating the vehicle.

The input unit 110 receives a stop signal from the driver through one or more of a plurality of manipulation devices capable of manipulating the vehicle (step S160).

Then, the control unit 120 transmits the stop signal to the automatic transmission control device to stop the EOL calibration.

For example, if the condition for generating the stop signal is to press the accelerator pedal while the EOL calibration is in progress, if the driver presses the accelerator pedal while the EOL calibration is in progress, the process is stopped.

As described above, according to the present invention, the EOL calibration of the automatic transmission can be performed by the vehicle itself, so that an emergency can be immediately dealt with.

In addition, since the EOL calibration can be performed using the operating devices provided in the vehicle, an additional device is not required, so it is easy to apply to the vehicle, and the driver can easily operate it.

In addition, it is easy to grasp the number of shift stages and brakes and clutches currently in progress through the progress signal, and it is easy to determine whether the EOL calibration for each brake and clutch has been completed.

6 is a graph showing a signal flow while the vehicle calibration method of the present invention is in progress, FIG. 7 is an enlarged graph of part A of FIG. 6 , and FIG. 8 is an enlarged graph of part B of FIG. 6 .

The process of the vehicle calibration method of the present invention will be described by way of example with reference to FIGS. 6 to 8 .

In this example, it is assumed that there are 5 brakes, B1, B2, B3, BF, and BR, and 3 clutches, C1, C2, and LU. Each of the brakes has a unique number from 0 to 4, and the clutches are from 5 to 7, respectively. has a unique number.

In addition, two warning lights are used, and for convenience of explanation, the two warning lights are expressed as a first warning light and a second warning light.

In addition, the signals shown in FIGS. 6 to 8 are classified into an identification signal 10 , a status signal 20 , a first warning light signal 30 , a second warning light signal 40 , and a pressure signal 50 .

The identification signal 10 represents the unique numbers of the brakes and clutches currently undergoing EOL calibration and has values of 0 to 7.

The status signal 20 indicates the progress of EOL calibration, a value of 0 indicates EOL calibration inactive state, a value of 1 indicates EOL calibration request state, a value of 2 indicates EOL calibration activation state, a value of 3 indicates EOL calibration stop state, and a value of 4 indicates EOL. Calibration failure status, a value of 5 indicates EOL calibration completion status.

The first warning light signal 30 and the second warning light signal 40 indicate the states of the first and second warning lamps, a value of 0 indicates an off state during EOL calibration, a value of 1 indicates a flashing state, and a value of 2 indicates a lit state, A value of 3 indicates the light-off state under normal circumstances.

The pressure signal 50 indicates the pressure applied to the brakes and clutches corresponding to the plurality of shift stages, and the completion or failure of the EOL calibration of the respective brakes and clutches can be determined by this signal.

Among the signals, the identification signal 10 and the pressure signal 50 are signals included in a plurality of progress signals received from the automatic transmission control device, and the status signal 20, the first warning light signal 30, and the second warning light Signal 40 changes based on the progress signals.

When the vehicle has a change in the gap between the plurality of brakes and the plurality of clutches of the automatic transmission due to an external impact, or when the EOL calibration of the automatic transmission is required due to the replacement of the automatic transmission control device and automatic transmission due to aging,

The controller 120 determines whether the vehicle satisfies the execution condition for performing the EOL calibration.

If the driver sets the gear to manual 1st gear neutral and engages the parking brake while the engine is running, the controller 120 determines that the execution condition is satisfied.

Then, the controller 120 outputs a guide signal capable of generating a start signal, and when the driver presses a preset button for 5 seconds or longer, the input unit 110 generates a start signal.

Changes in signal values in the process of receiving a start signal will be described with reference to FIG. 7 .

When the user calls the EOL calibration by pressing the button, the status signal 20 recognizes the EOL calibration request and changes from a value of 0 to a value of 1.

The first warning light signal 30 and the second warning light signal 40 have a value of 3, which is an off state of a general situation, and the first warning light signal 30 changes to a value of 1 to become a blinking state, and the second warning light signal (40) changes to a value of 0, and the EOL calibration is turned off.

The pressure signal 50 maintains a value of 0 because the process of applying pressure to the brakes and clutches of the automatic transmission has not yet been performed.

And, the identification signal 10 has a value of 5 because the gear is in a neutral state according to the execution condition, indicating the clutch corresponding to the lowest number of shift stages.

Thereafter, when the button is released, the input unit 110 generates a start signal.

Then, the control unit 120 transmits a pressure signal for applying pressure to the plurality of brakes and the plurality of clutches of the automatic transmission corresponding to the shift stages of the automatic transmission to the automatic transmission control device.

Changes in signals in the process of performing EOL calibration will be described with reference to FIGS. 6 and 7 .

As shown in FIG. 7 , when the control unit 120 transmits the pressure signal to the automatic transmission control device, the identification signal 10 changes to a value of 0 to indicate a brake having a value of 0, and the status signal 20 is changed to a value of 2 It changes to indicate the EOL calibration activation status.

In addition, the first warning light signal 30 and the second warning light signal 40 maintain their previous states.

In response to the pressure signal, the automatic transmission control device applies pressure to the brake and clutch corresponding to each shift stage.

As shown in FIG. 6 , the identification signal 10 increases from 0 to 7 to indicate the brake and clutch in progress, and the pressure signal 50 applies pressure whenever the value of the identification signal 10 increases.

Here, the completion or failure of the EOL calibration of each brake and clutch can be determined using the pressure signal 50 .

In addition, the status signal 20 , the first warning light signal 30 , and the second warning light signal 40 maintain their existing values.

When the EOL calibration of clutch 7 is completed, it is recognized as the completion of the entire EOL calibration, and the key point pressure and hydraulic charge time measured at each brake and clutch are stored in the automatic transmission control unit.

As shown in FIG. 8 , when the calibration of the 7th clutch is completed, the identification signal 10 again indicates the 5th clutch which is a neutral state of the gear, and the status signal 20 changes to a 5 value to indicate the completion of the EOL calibration.

The first warning light signal 30 is changed to a value of 3 to indicate a normal light-off state, and the second warning light signal 40 is changed to a value of 2 and turned on.

The pressure signal 50 has a value of 0 since the application of the pressure is completed.

In this example, the operation of the first warning light and the second warning light may vary depending on the setting, and may be output as an image on a display device provided in the vehicle instead of the warning light.

Although it has been described with reference to the above embodiments, it will be understood by those skilled in the art that various modifications and changes can be made to the present invention without departing from the spirit and scope of the present invention as set forth in the claims below. will be able

110...input unit 120...control unit
10...Identification signal 20...Status signal
30...Signal of first warning light 40...Signal of second warning light
50...pressure signal

Claims (9)

A vehicle control device for performing driving-related control using at least one of a plurality of vehicle control devices, the vehicle control device comprising:
an input unit receiving a start signal including a command to perform EOL calibration for a plurality of shift stages of the automatic transmission; and
When the input unit receives the start signal, a plurality of progress signals for a plurality of progress steps of EOL calibration are transmitted to the automatic transmission control device to perform EOL calibration, and the progress of EOL calibration is monitored using the progress signals. Vehicle EOL calibration device including a control unit for outputting. A vehicle control method for performing driving-related control using at least one of a plurality of vehicle control devices, the vehicle control method comprising:
receiving a start signal including a command to perform EOL calibration for a plurality of shift stages of an automatic transmission;
performing EOL calibration by transmitting a plurality of progress signals for a plurality of progress steps of EOL calibration to an automatic transmission control device when the start signal is received; and
and outputting a progress status of EOL calibration using the progress signals. 3. The method of claim 2,
The step of receiving the start signal is,
determining whether the state of the vehicle satisfies the execution condition for executing the EOL calibration;
When the state of the vehicle satisfies the execution condition,
outputting a guide signal for inputting the start signal; and
and receiving the start signal through any one or more of a plurality of manipulation devices capable of manipulating the vehicle. 3. The method of claim 2,
The step of performing the EOL calibration comprises:
transmitting a pressure signal for applying pressure to a plurality of brakes and a plurality of clutches of the automatic transmission corresponding to the shift stages of the automatic transmission to the automatic transmission control device;
measuring a key point pressure and flow rate charging time of the brakes and the clutches corresponding to the shift stage; and
and storing the key point pressure and flow rate charging time for each shift stage in the automatic transmission control device. 3. The method of claim 2,
The step of outputting the progress is,
identifying a plurality of brakes and a plurality of clutches corresponding to the shift stages in which EOL calibration is in progress through the progress signals;
outputting an EOL calibration progress status of the brakes and the clutches in progress;
determining whether EOL calibration of the brakes and the clutches corresponding to the respective shift stages has been completed; and
When it is determined that the EOL calibration for the brake and the clutch corresponding to the last number of shift stages is completed,
A vehicle EOL calibration method comprising outputting an EOL calibration completion signal. 6. The method of claim 5,
The progress signals are
The vehicle EOL calibration method, characterized in that it includes unique identification information of the brake or the clutch in which the EOL calibration is in progress. 6. The method of claim 5,
The step of outputting the EOL calibration progress status includes:
The vehicle EOL calibration method, characterized in that outputting the EOL calibration progress status using an output device provided in the vehicle. 3. The method of claim 2,
The vehicle EOL calibration method further comprising the step of receiving a stop signal from the driver through any one or more of a plurality of manipulation devices capable of manipulating the vehicle. 3. The method of claim 2,
Before the step of receiving the start signal,
determining whether the automatic transmission and the automatic transmission control device are abnormal; and
When an abnormality is found in any one or more of the automatic transmission and the automatic transmission control device,
The method of claim 1, further comprising outputting either a replacement notification of at least one of the automatic transmission control device and the automatic transmission and a notification that EOL calibration of the automatic transmission is required to the driver.

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