KR20220008626A - System and method for controlling the regeneration action of DPF - Google Patents

Abstract

The present invention relates to a technology which automatically regenerates DPF according to a driver's will before over-sedimentation of PM by analyzing a section in which regeneration is possible within a driving route to a destination. The present invention introduces DPF regeneration control method and system, wherein a regeneration destination route is generated by searching for the section in which regeneration is possible and which is appropriate for DPF regeneration, based on road information to the destination when the destination is inputted to a navigation, and then a controller controls to automatically regenerate DPF when a vehicle enters the section in which regeneration is possible during driving along the regeneration destination route generated from the navigation.

Description

DPF regeneration control method and system {System and method for controlling the regeneration action of DPF}

An object of the present invention is to provide a DPF regeneration control method and system for regenerating the DPF by analyzing a section that can be regenerated within a driving route to a destination, thereby regenerating the DPF according to a driver's will before excessive accumulation of PM.

When a certain amount of PM is collected inside the DPF, the function of burning PM using high-temperature exhaust gas is called the DPF regeneration function.

However, when the PM is over-deposited inside the DPF, high temperature is emitted as the PM is burned inside the DPF. there is a problem

Meanwhile, while the vehicle is driving, the DPF is automatically regenerated by receiving an output value reflecting the driving state of the vehicle.

Accordingly, even when the driver does not want the DPF to be regenerated, it is also impossible for the driver to predict when the DFP can be regenerated.

The matters described as the background art above are only for improving the understanding of the background of the present invention, and should not be accepted as acknowledging that they correspond to the prior art already known to those of ordinary skill in the art.

JP 2010-0121531 A JP 4092499 B

The present invention has been devised to solve the above-described problems, and by analyzing a section where regeneration is possible within a driving route to a destination and regenerating the DPF, the DPF is regenerated according to the driver's will before excessive accumulation of PM. An object of the present invention is to provide a method and system for controlling regeneration.

In order to achieve the above object, the present invention comprises: a path generating step of generating a regeneration destination path by searching for a regeneration section suitable for DPF regeneration based on road information to the destination when a destination is input to a navigation system; and an auto-regeneration step of controlling the controller to automatically regenerate the DPF when the vehicle enters a reproducible section in the course of driving along the regeneration destination path created in the navigation.

In the route generating step, when a destination is input into the navigation system, it is confirmed whether a search request for the reproducible section is requested; When there is a request for a search for the reproducible section, a reproduction destination path may be generated.

In the route generating step, when there is no request for a search for the reproducible section, a general destination route may be generated instead of the reproduction destination route.

The route generating step may include selecting a plurality of predicted routes to a destination by using map information of a navigation system when there is a request for a search for a reproducible section; Searching for a reproducible section by reflecting road information to a destination for each expected route as an input variable; and generating a reproduction destination route by including reproduction information on a reproducible section for each predicted route.

It is possible to guide by displaying the reproduction information on the reproduction possible section for each reproduction destination path.

The road information may be the average vehicle speed, and the reproduction destination route may be divided into sections according to the average vehicle speed, and a section having an average vehicle speed greater than or equal to a predetermined vehicle speed may be determined as a reproducible section.

The road information is atmospheric pressure, and a section in which the atmospheric pressure is equal to or less than a predetermined value in the reproduction destination path may be excluded from the reproducible section.

The road information is the atmospheric temperature, and a section in the regeneration destination route in which the atmospheric temperature is less than or equal to a predetermined value may be excluded from the reproducible section.

determining whether a playable section exists within the selected reproduction destination path when the reproduction destination path generated in the path generation step is selected; receiving confirmation of whether to automatically regenerate the DPF in the reproducible section when the reproducible section exists; If it is selected to automatically regenerate the DPF in the reproducible section, it is possible to control to automatically regenerate the DPF in the reproducible section while guiding the reproduction destination path by entering the automatic regenerating step.

If it is selected not to automatically regenerate the DPF in the reproducible section, it is possible to guide the reproduction destination path, but control so that the DPF is not automatically regenerated in the reproducible section.

When there is no reproducible section in the selected reproduction destination path, a general destination path may be created and guided instead of the reproduction destination path.

In the automatic regeneration step, when entering the regeneration possible section, it is determined whether the output value of the vehicle satisfies the regeneration entry condition required for automatic regeneration of the DPF; when the regeneration entry condition is satisfied, automatic regeneration of the DPF is performed; When the regeneration entry condition is not satisfied, automatic regeneration of the DPF may not be performed.

In the automatic replay step, a reproducible time is calculated based on replay information for the reproducible section; The automatic regeneration of the DPF may be performed by setting the regeneration time within the regeneration time according to the soot collection amount of the DPF.

When the reproduction time is insufficient to make the soot collection amount reach the reproduction completion reference value, the soot collection amount remaining after reproduction may be displayed and guided.

The soot collection amount can be displayed on the terminal by connecting the vehicle and the terminal by the connected car service.

During automatic regeneration of the DPF, when a regeneration maintenance condition determined by a vehicle output value or road information is not satisfied, regeneration may be stopped.

The present invention provides a navigation system for generating a reproduction destination route by searching for a reproducible section suitable for DPF regeneration based on road information to the destination when a destination is input; and a controller configured to automatically regenerate the DPF when the vehicle enters the regeneration section while driving along the regeneration destination route after selecting the regeneration destination route generated in the navigation system.

Through the above-described problem solving means, the present invention, when the driver sets a destination in the navigation system, analyzes road information to generate a regeneration destination route that can be reproduced, and automatically regenerates the DPF in the regeneration section while driving along the regeneration destination route do.

Therefore, by regenerating the DPF before PM is excessively deposited at the driver's will, it prevents the temperature of the DPF from becoming excessively high during regeneration of the DPF, thereby preventing the crack of the DPF and minimizing the quality problem of the DPF. there is

1 is a block diagram of a DPF regeneration control system according to the present invention.
2 is a view showing the entire reproduction control process according to the present invention.
3 is a diagram illustrating reproduction information of a reproduction destination path according to the present invention;

A preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of a DPF regeneration control system according to the present invention. The DPF regeneration control system of the present invention includes a navigation system and a controller.

Referring to the drawings, the navigation system is installed on the vehicle and can guide not only general destination routes but also regeneration destination routes. Create a playback destination path. Here, in order to generate a regenerated destination route along with a reproducible section through navigation, current location information of the vehicle and road congestion situation must be provided to the navigation through GPS, etc. in addition to road information to be described later, and based on this, The estimated driving distance to the destination and the estimated driving time may be calculated.

In addition, the controller controls the DPF to be automatically regenerated when the driver selects the regeneration destination path generated by the navigation and enters the regeneration possible section while the vehicle travels along the regeneration destination path.

For example, the navigation and the controller can communicate by means of a CAN signal, and when it is confirmed by the navigation that the vehicle has entered the reproducible section, the navigation transmits a related signal to the controller, and the controller provides a condition for automatic regeneration of the DPF. DPF regeneration is carried out by analyzing them.

For reference, a controller according to an exemplary embodiment of the present invention includes a non-volatile memory (not shown) configured to store data regarding an algorithm configured to control the operation of various components of a vehicle or software instructions for reproducing the algorithm; It may be implemented through a processor (not shown) configured to perform operations described below using data stored in the corresponding memory. Here, the memory and the processor may be implemented as separate chips. Alternatively, the memory and processor may be implemented as a single chip integrated with each other. A processor may take the form of one or more processors.

Meanwhile, FIG. 2 is a view showing the regeneration control process according to the present invention as a whole. Referring to the drawing, when a destination is input into the navigation system, a regeneration destination path is determined by searching for a regeneration section suitable for DPF regeneration based on road information to the destination. a path generation step to create; When the vehicle enters the regeneration section in the process of driving along the regeneration destination path created in the navigation, the controller automatically regenerates the DPF.

That is, when the driver sets a destination in the navigation system, the road information is analyzed to generate a regeneration destination route that can be reproduced, and the DPF is automatically reproduced in the regeneration section while driving along the regeneration destination route.

Therefore, by regenerating the DPF before PM is excessively deposited at the driver's will, it prevents the temperature of the DPF from becoming excessively high during regeneration of the DPF, thereby preventing the crack of the DPF and minimizing the quality problem of the DPF. .

In addition, in the route generating step according to the present invention, when a destination is input to the navigation system, it is confirmed whether a search request for the reproducible section is requested; When there is a request for a search for the reproducible section, a reproduction destination path may be generated.

For example, if the driver inputs a destination into the navigation system, instead of directly searching for the regenerable section, the driver may ask whether to search for the reproducible section to create a regenerative destination route by displaying an active window or the like on the navigation device. When selecting to search for the reproducible section, the navigation searches for the reproducible section.

That is, when the driver selects whether to search for the regeneration section, the regeneration operation of the DPF can be performed according to the driver's will, and thus regeneration can be performed before soot is excessively deposited in the DPF.

On the other hand, in the path generating step, when there is no search request for the reproducible section, a general destination path may be generated instead of the reproduction destination path.

For example, when the driver selects not to search for the reproducible section, the navigation does not search for the reproducible section, and generates a general destination route such as an optimal route and a shortest route to the destination in the same manner as in general navigation.

In addition, to describe the process of the route generating step of generating the reproduction destination route in more detail, when there is a request for a search for a reproducible section, selecting a plurality of predicted routes to the destination using map information of the navigation system; Searching for a reproducible section by reflecting road information to a destination for each expected route as an input variable; and generating a reproduction destination route by including reproduction information on a reproducible section for each predicted route.

And, it is possible to display and guide the reproduction information on the reproducible section for each reproduction destination route, which is preferably displayed on the navigation system, but may also be displayed on the vehicle cluster.

For example, when a driver inputs a destination and selects a search for a reproducible section, the navigation system selects several routes based on map information.

And, by using input variables according to the road information, the route on which the automatic regeneration of the DPF can be entered is calculated, and several recommended routes (regeneration destination routes) are presented as shown in FIG. 3, and the automatic regeneration information of the DPF is provided for each route. will display

Accordingly, the driver may select one of the routes shown in FIG. 3 , and automatic regeneration of the DPF is performed in the process of driving the vehicle along the selected regeneration destination route.

Meanwhile, the road information used to determine the reproducible section in the process of generating the regeneration destination route may be the average vehicle speed of the vehicle.

Specifically, the regeneration destination route is divided into sections according to the average vehicle speed, and a section in which the average vehicle speed is greater than or equal to a certain vehicle speed is determined as a renewable section.

For example, a section having an average vehicle speed of less than 35 kph may be classified as a low speed section, a section having an average vehicle speed of 35 to 55 kph may be classified as a medium speed section, and a section having an average vehicle speed exceeding 55 kph may be classified as a high speed section. For reference, if the above average vehicle speed is maintained for a certain period of time or longer, it can be set to the corresponding section.

Accordingly, the high-speed section on the reproduction destination path may be determined as the reproducible section.

That is, in order to regenerate the DPF, it is necessary to increase the temperature of the exhaust gas. In order to increase the temperature of the exhaust gas to a high temperature, fuel is additionally consumed.

Accordingly, the present invention sets the high-speed driving section in which the temperature of the exhaust gas is relatively high as the renewable section, thereby increasing the temperature of the exhaust gas with relatively little fuel to automatically regenerate the DPF, thereby improving the fuel efficiency of the vehicle. be able to

In addition, other road information used to determine the reproducible section may include atmospheric pressure.

Specifically, a section in which the atmospheric pressure is equal to or less than a predetermined value in the regeneration destination path is excluded from the regeneration possible section.

That is, since regeneration of the DPF is not performed smoothly in the surrounding environment with low atmospheric pressure, it is checked whether there is a section in the searched regeneration destination path in which the atmospheric pressure is less than or equal to a certain pressure, and the section is excluded from the renewable section.

In addition, as another road information used to determine the reproducible section, there may be an atmospheric temperature.

Specifically, a section in which the atmospheric temperature is equal to or less than a predetermined value in the regeneration destination path is excluded from the regeneration possible section.

That is, since the regeneration of the DPF is not performed smoothly in the surrounding environment with a low ambient temperature, it is checked whether there is a section in the searched regeneration destination path in which the ambient temperature is below a certain temperature, and the section is excluded from the regeneration possible section.

Meanwhile, in the present invention, when the regeneration destination path is selected, whether the DPF regeneration is possible is checked once again, and the driver can confirm the will of the DPF regeneration again.

Specifically, when selecting the reproduction destination path generated in the path generating step, determining whether a reproducible section exists within the selected reproduction destination path; receiving confirmation of whether to automatically regenerate the DPF in the reproducible section when the reproducible section exists; When it is selected to automatically regenerate the DPF in the reproducible section, the automatic regenerating step is entered and the DPF is automatically regenerated in the reproducible section while guiding the reproduction destination path.

For example, when the driver selects one of several routes shown in FIG. 3 , it is determined whether there is a reproducible section in the selected route.

If there is a section that can be regenerated on the selected route, in the process of driving the route, the driver can ask whether the DPF should be automatically regenerated by displaying an active window on the navigation system, and the driver can choose to automatically regenerate the DPF. In this case, when the navigation device enters the reproducible section, the DPF is automatically regenerated by notifying the controller of this entry signal.

That is, when the driver selects whether to automatically regenerate the DPF, the DPF regeneration operation can be performed according to the driver's will, and thus regeneration can be performed before soot is excessively deposited in the DPF.

However, when selecting not to automatically regenerate the DPF in the regenerable section, the regeneration destination path is guided but the DPF is controlled not to be automatically regenerated in the reproducible section.

For example, when the driver selects not to automatically regenerate the DPF, the navigation guides the destination to the regeneration destination path selected by the driver, but even if the driver enters the regeneration section, the entry signal is not notified to the controller. control not to play.

In addition, when there is no reproducible section in the reproduction destination route selected by the driver, a general destination route is generated and guided instead of the reproduction destination route.

On the other hand, when the driver selects in the navigation system to automatically regenerate the DPF, the DPF is regenerated in consideration of the vehicle condition.

Specifically, in the automatic regeneration step, when the vehicle enters a regeneration section, it is determined whether an output value of the vehicle satisfies a regeneration entry condition required for automatic regeneration of the DPF; when the regeneration entry condition is satisfied, automatic regeneration of the DPF is performed; When the regeneration entry condition is not satisfied, it is controlled so that automatic regeneration of the DPF is not performed.

For example, when the vehicle reaches a point where regeneration is possible, the navigation device transmits a signal for automatic regeneration of the DPF to the controller, and the controller receives this signal and checks output values capable of entering the automatic regeneration of the DPF.

The output value may be a DOC front/rear temperature, coolant temperature, fuel amount, atmospheric pressure, atmospheric temperature, and the like.

Accordingly, when the output values satisfy the conditions for automatic DPF regeneration, DPF regeneration is started.

In addition, in the automatic replay step of the present invention, a reproducible time is calculated based on the replay information for the reproducible section; The automatic regeneration of the DPF is performed by setting a regeneration time within the regeneration time according to the soot collection amount of the DPF.

That is, in the case of DPF automatic regeneration to which the present invention is not applied, the DPF regeneration time can be determined by using the regeneration time model value for the soot collection amount, but the present invention has a limited period in which regeneration is possible, so it can be implemented within the regeneration period. The DPF is regenerated by calculating the regeneration time in advance.

However, if the regeneration time calculated as described above is insufficient to make the soot collection amount reach the regeneration completion reference value, the soot collection amount remaining after regeneration is displayed and guided.

For example, if the soot collection amount is 83% and it is assumed that it takes about 60 to 80 minutes to complete the DPF regeneration under high-speed driving conditions, if the calculated regeneration time is less than 60 minutes and it is impossible to remove all the accumulated soot, , the remaining soot amount is displayed on the cluster, etc. using the soot collection amount and the calculated playback time.

In addition, the soot collection amount can be displayed on the terminal by connecting the vehicle and the terminal through a connected car service such as 'BLUE LINK', so that the driver can check the soot collection amount in real time through the terminal, and through this The driver can select whether to regenerate the DPF when driving to the next destination, thereby improving the fuel efficiency of the vehicle.

In addition, during automatic regeneration of the DPF, when a regeneration maintenance condition determined by a vehicle output value or road information is not satisfied, regeneration may be stopped.

For example, the output value of the vehicle may be a DOC front/rear end temperature, coolant temperature, fuel amount, atmospheric pressure, atmospheric temperature, etc., and when these output values deviate from a preset regeneration maintenance condition, regeneration of the DPF is stopped.

In addition, when the road condition is specified during regeneration of the DPF and the vehicle speed is lowered, or the vehicle deviates from the regeneration destination path and travels on a road other than the regeneration destination path, the regeneration of the DPF is stopped.

Hereinafter, the DPF regeneration control process according to the present invention will be looked at as a whole with reference to FIG. 2 .

When a destination is input into the navigation system for driving the vehicle (S10), an active window asking whether to search for a route for automatic DPF regeneration is displayed on the navigation system (S20).

Accordingly, when the driver and other vehicle passengers select to search for a route for automatic DPF regeneration, the navigation system generates a number of routes to the regeneration destination including the renewable section based on the road information to the destination, and the generated regeneration The destination route is displayed on the navigation screen (S30).

Accordingly, the driver selects one of the reproduction destination paths displayed on the navigation system (S40).

However, when the passenger selects that he or she does not want to search for a route for automatic DPF regeneration, the navigation generates a plurality of general destination routes to the destination (S50).

Meanwhile, when the driver selects a regeneration destination path in step S40, the navigation system determines whether a DPF regeneration section exists within the regeneration destination path selected by the driver (S60).

As a result of the determination in step S60, if there is a reproducible section, an active window asking whether or not to automatically regenerate the DPF is displayed in the navigation (S70).

Accordingly, when the passenger of the vehicle selects to perform automatic DPF regeneration, the vehicle is guided to the destination of the vehicle to drive the vehicle (S80), and whether the vehicle enters the regeneration section is monitored during the driving process of the vehicle (S90).

However, if the passenger of the vehicle selects not to automatically regenerate the DPF, the vehicle's destination is guided to control the vehicle to be driven, but whether the vehicle enters the regeneration section is not monitored (S100).

Meanwhile, as a result of monitoring in step S90, when the vehicle enters the renewable section, the controller notifies that the navigation is located in the renewable section, and the controller determines whether the DPF auto-regeneration condition is satisfied based on the vehicle output value (S110).

As a result of the determination in step S110, when the DPF automatic regeneration condition is satisfied, the navigation continues to guide the destination, and the controller performs automatic regeneration of the DPF.

However, as a result of the determination in step S110, if the DPF automatic regeneration condition is not satisfied, the DPF automatic regeneration is not performed and only the destination is guided through the navigation (S100).

As described above, according to the present invention, when the driver sets a destination in the navigation system, road information is analyzed to generate a regeneration destination route that can be reproduced, and the DPF is automatically reproduced in the regeneration possible section while driving along the regeneration destination route.

Therefore, by regenerating the DPF before PM is excessively deposited at the driver's will, it prevents the temperature of the DPF from becoming excessively high during regeneration of the DPF, thereby preventing the crack of the DPF and minimizing the quality problem of the DPF. .

On the other hand, although the present invention has been described in detail only with respect to the specific examples described above, it is obvious to those skilled in the art that various modifications and variations are possible within the scope of the technical spirit of the present invention, and it is natural that such variations and modifications belong to the appended claims. .

10 : navigation
12: GPS
20: controller
30 : cluster
40: terminal

Claims (17)

a route generating step of generating a regeneration destination route by searching for a regeneration section suitable for DPF regeneration based on road information to the destination when a destination is input into the navigation system;
An automatic regeneration step of controlling the controller to automatically reproduce the DPF when the vehicle enters the regeneration section in the course of driving along the regeneration destination path created in the navigation system. The method according to claim 1,
In the path creation step,
when a destination is input in the navigation system, it is confirmed whether a search request for the playable section is requested;
The DPF regeneration control method according to claim 1, wherein the regeneration destination path is created when there is a request for a search for the playable section. 3. The method according to claim 2,
In the path creation step,
and generating a general destination path instead of the reproduction destination path when there is no request for a search for the reproducible section. 3. The method according to claim 2,
The path creation step is
selecting a plurality of predicted routes to a destination by using map information of a navigation system when there is a request for a search for a reproducible section;
Searching for a reproducible section by reflecting road information to a destination for each expected route as an input variable;
DPF regeneration control method comprising the; generating a regeneration destination route by including the regeneration information on the regeneration possible section for each predicted route. 5. The method according to claim 4,
The DPF regeneration control method, characterized in that by displaying and guiding the reproduction information on the reproduction possible section for each reproduction destination path. The method according to claim 1,
The road information is an average vehicle speed,
A DPF regeneration control method, characterized in that the regeneration destination route is divided into sections according to the average vehicle speed, and a section having an average vehicle speed greater than or equal to a certain vehicle speed is determined as a regeneration section. 7. The method of claim 6,
The road information is atmospheric pressure,
A DPF regeneration control method, characterized in that the section in the regeneration destination path in which the atmospheric pressure is less than or equal to a certain value is excluded from the regeneration possible section. 7. The method of claim 6,
The road information is the atmospheric temperature,
A DPF regeneration control method, characterized in that, in the regeneration destination path, a section in which the atmospheric temperature is less than or equal to a certain value is excluded from the regeneration possible section. 5. The method according to claim 4,
determining whether a playable section exists within the selected reproduction destination path when the reproduction destination path generated in the path generation step is selected;
receiving confirmation of whether to automatically regenerate the DPF in the reproducible section when the reproducible section exists;
In the case where automatic regeneration of the DPF is selected in the regenerable section, an automatic regeneration step is entered and the DPF regeneration control method is controlled to automatically regenerate the DPF in the regenerable section while guiding the regeneration destination path. 10. The method of claim 9,
When it is selected not to automatically regenerate the DPF in the regenerable section, the DPF regeneration control method according to claim 1, wherein the regeneration destination path is guided but the DPF is controlled not to be automatically regenerated in the regenerable section. 10. The method of claim 9,
The DPF regeneration control method according to claim 1, wherein, when there is no regeneration section within the selected regeneration destination path, a general destination path is created and guided instead of the regeneration destination path. 5. The method according to claim 4,
In the automatic regeneration step,
determining whether an output value of the vehicle satisfies a regeneration entry condition required for automatic regeneration of the DPF when entering the regeneration section;
when the regeneration entry condition is satisfied, automatic regeneration of the DPF is performed;
The DPF regeneration control method, characterized in that the automatic regeneration of the DPF is not performed when the regeneration entry condition is not satisfied. 13. The method of claim 12,
In the automatic regeneration step,
calculating a playable time based on the play information for the playable section;
A DPF regeneration control method, characterized in that automatic regeneration of the DPF is performed by setting a regeneration time within the regeneration available time according to the soot collection amount of the DPF. 14. The method of claim 13,
The DPF regeneration control method, characterized in that when the regeneration time is insufficient to make the soot collection amount reach the regeneration completion reference value, the soot collection amount remaining after regeneration is displayed and guided. 14. The method of claim 13,
A DPF regeneration control method, characterized in that the soot collection amount is displayed on the terminal by connecting the vehicle and the terminal by a connected car service. 13. The method of claim 12,
The DPF regeneration control method, characterized in that the regeneration is stopped when a regeneration maintenance condition determined by a vehicle output value or road information is not satisfied during automatic regeneration of the DPF. a navigation system for generating a regeneration destination route by searching for a regeneration section suitable for DPF regeneration based on road information to the destination when a destination is input;
A DPF regeneration control system comprising: a controller configured to automatically regenerate the DPF when the vehicle enters a regeneration section while driving along the regeneration destination route after selecting the regeneration destination route generated in the navigation system.

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