JP6574587B2 - Vehicle control device - Google Patents

Description

  The present invention relates to a vehicle control apparatus that regenerates a filter unit by burning particulate matter accumulated in a filter unit of a vehicle exhaust gas.

  In order to remove particulate matter (PM) contained in engine exhaust gas, a filter unit such as GPF (Gasoline particulate filter) or DPF (Diesel particulate filter) may be attached to the exhaust system of the vehicle. When PM accumulates in the filter unit, a regeneration process is performed in which the fuel injection amount of the engine is increased and the exhaust gas is heated to burn the accumulated PM.

  However, if the vehicle stops frequently in an urban area, the exhaust gas does not reach the temperature required for the regeneration process even though the fuel injection amount of the engine is increased, or the temperature of the exhaust gas before the regeneration process is completed. Or the fuel is wasted. Therefore, during the regeneration process, if it is determined that the PM combustion is not sufficiently advanced based on the elapsed time after reaching the PM combustion start temperature and the PM combustion amount per unit time, the filter unit A technique for stopping the reproduction process is disclosed (for example, Patent Document 1).

JP 2010-106691 A

  In the control described in Patent Document 1 described above, after the reproduction process is started, the reproduction process is stopped when the progress per reproduction process is poor. For this reason, there is a case where the fuel injected before the stop of the regeneration process is wasted, and there is a demand for development of a technique for suppressing such fuel consumption.

  Therefore, an object of the present invention is to provide a vehicle control device that can reduce fuel that is not wasted because the regeneration process cannot be completed.

In order to solve the above problems, the particulate matter deposited on the filter part for removing the particulate matter contained in the exhaust gas of the vehicle of the present invention is burned by raising the temperature of the exhaust gas, and the filter part The vehicle control device that performs the regeneration processing for regenerating the temperature of the exhaust gas by increasing the fuel injection amount and the regeneration necessity determining portion that determines whether the regeneration processing is necessary based on the amount of particulate matter accumulated The regeneration control process is performed by the fuel control unit that performs the regeneration process, the vehicle stop prediction unit that performs the prediction process for predicting the stop of the vehicle, and the regeneration necessity determination unit when the regeneration process is not performed. Then, as a result of the prediction process, a reproduction execution determination unit that determines whether or not to start the reproduction process based on whether or not the vehicle stops within a reproduction completion time that is a time when the reproduction process is completed ; It is characterized by providing.

In order to solve the above problems, the particulate matter deposited on the filter part for removing the particulate matter contained in the exhaust gas of the vehicle of the present invention is burned by raising the temperature of the exhaust gas, and the filter part The vehicle control apparatus for performing the regeneration process for regenerating the fuel is a fuel control unit for increasing the fuel injection amount to raise the exhaust gas temperature to perform the regeneration process, and the vehicle stop for performing the prediction process for predicting the stop of the vehicle Reproduction execution that determines whether or not to continue the reproduction process based on whether or not the vehicle stops within a reproduction completion time that is a time during which the reproduction process is completed as a result of the prediction process during the reproduction process And a determination unit.

  The regeneration execution determination unit determines that the regeneration process is necessary by the regeneration necessity determination unit, and if it is determined that the vehicle stops within the regeneration completion time, which is the time when the regeneration process is completed, as a result of the prediction process, Based on the parameters including the temperature, it is determined whether or not the regeneration process can be performed in the idle state, and if it is determined not to perform the regeneration process in the idle state, the regeneration process is not started or the ongoing regeneration process is stopped. Also good.

  According to the present invention, it is possible to reduce wasteful fuel that cannot be completely regenerated.

It is the schematic which shows the structure of an engine and a vehicle control apparatus. It is explanatory drawing for demonstrating the performance period of a reproduction | regeneration process. It is a flowchart which shows the flow of a process of a vehicle control method. It is the schematic which shows the structure of the engine and vehicle control apparatus in a modification. It is a flowchart which shows the flow of a process of the vehicle control method in a modification.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The dimensions, materials, and other specific numerical values shown in the embodiments are merely examples for facilitating understanding of the invention, and do not limit the present invention unless otherwise specified. In the present specification and drawings, elements having substantially the same function and configuration are denoted by the same reference numerals, and redundant description is omitted, and elements not directly related to the present invention are not illustrated. To do.

  FIG. 1 is a schematic diagram showing the configuration of the engine 1 and the vehicle control device 100. As shown in FIG. 1, in the engine 1, a cylinder block 2, a cylinder head 3 provided on an upper portion of the cylinder block 2, and a piston 5 supported by a connecting rod 4 so as to be slidable in the cylinder block 2 Is provided. A space surrounded by the cylinder block 2, the cylinder head 3, and the upper surface of the piston 5 is a combustion chamber 6.

  An intake port 7 and an exhaust port 8 are provided in the cylinder head 3 so as to communicate with the combustion chamber 6. Between the intake port 7 and the combustion chamber 6, the tip of the intake valve 9 is located, and between the exhaust port 8 and the combustion chamber 6, the tip of the exhaust valve 10 is located. The intake valve 9 is in contact with the cam 11 at the other end, and opens and closes between the intake port 7 and the combustion chamber 6 as the cam 11 rotates. The exhaust valve 10 is in contact with the cam 12 at the other end, and opens and closes between the exhaust port 8 and the combustion chamber 6 as the cam 12 rotates.

  The cylinder head 3 is provided with a spark plug 13 so that the tip is located in the combustion chamber 6. Then, the spark plug 13 is ignited at a predetermined timing, and the fuel flowing into the combustion chamber 6 is combusted.

  A fuel injection device 14 is provided in the combustion chamber 6, and an intake passage 15 is communicated with the upstream side of the intake port 7. A throttle valve 16 is provided in the intake passage 15. The throttle valve 16 is driven by an actuator (not shown) to adjust the opening, thereby varying the amount of intake air into the combustion chamber 6 of the engine 1.

  Further, an exhaust passage 17 formed of an exhaust muffler or the like is communicated with the downstream side of the exhaust port 8. In the exhaust passage 17, for example, a catalyst portion 18 made of a catalyst such as platinum or palladium is provided. The catalyst unit 18 purifies the exhaust gas by oxidizing hydrocarbons and carbon monoxide contained in the exhaust gas and reducing nitrogen oxides.

  On the downstream side of the catalyst unit 18, for example, a filter unit 19 (GPF (Gasoline particulate filter)) made of a porous material such as ceramic or stainless steel is provided. The filter unit 19 collects particulate matter contained in the exhaust gas and removes the particulate matter from the exhaust gas.

  The pressure sensor 20 measures a pressure differential pressure between the catalyst unit 18 and the filter unit 19 (near the upstream side of the filter unit 19) and the downstream side of the filter unit 19 in the exhaust flow path 17, A signal indicating the differential pressure is output to the vehicle control device 100.

  The imaging device 21 includes an imaging element such as a charge-coupled device (CCD) or a complementary metal-oxide semiconductor (CMOS), and can capture the front of the vehicle and generate a monochrome image or a color image. The imaging devices 21 are in pairs and are spaced apart in a substantially horizontal direction so that their optical axes are substantially parallel on the vehicle traveling direction side.

  The vehicle control apparatus (ECU: Engine Control Unit) 100 is composed of a ROM that stores various programs, a CPU that reads out the programs from the ROM and performs arithmetic processing, and a microcomputer that has a RAM as a processing area.

  Further, when the accumulation amount of the particulate matter in the filter unit 19 increases, the vehicle control device 100 performs a regeneration process for regenerating the filter unit 19 by burning the accumulated particulate matter. At this time, the vehicle control device 100 functions as a regeneration necessity determination unit 110, a fuel control unit 112, a travel environment recognition unit 114, a vehicle stop prediction unit 116, and a regeneration execution determination unit 118.

  The regeneration necessity determination unit 110 determines whether regeneration processing is necessary based on the amount of particulate matter deposited. Here, the amount of particulate matter deposited is estimated based on a signal from the pressure sensor 20, for example. That is, the regeneration necessity determination unit 110 performs the regeneration process when the differential pressure between the upstream vicinity and the downstream vicinity of the filter unit 19 exceeds a preset first threshold based on a signal from the pressure sensor 20. Is determined to be necessary.

  In addition, the reproduction necessity determination unit 110 determines whether or not a reproduction process completion condition is satisfied during the reproduction process. For example, the regeneration necessity determination unit 110 sets a second threshold value that is set in advance based on a signal from the pressure sensor 20 so that the differential pressure between the upstream side and the downstream side of the filter unit 19 is smaller than the first threshold value. If it is less than that, it is determined that the particulate matter is sufficiently combusted and the completion condition of the regeneration process is satisfied.

  For example, when the amount of accumulated particulate matter is excessive, if the amount of fuel injection is increased and the particulate matter is combusted, the filter unit 19 becomes too hot. Therefore, a third threshold value that is larger than the first threshold value is set as the threshold value for the differential pressure. If the third threshold value is exceeded, the regeneration necessity determination unit 110 does not determine that the regeneration process is necessary. Then, a warning light etc. is informed that maintenance is required at a maintenance factory. In order to facilitate understanding, in the following, description of processing when the differential pressure exceeds the third threshold will be omitted, and regeneration processing performed when the differential pressure is equal to or lower than the third threshold will be mainly described.

  The fuel control unit 112 controls the fuel injection device 14 to control the fuel injection timing and the fuel injection amount. Further, when the fuel control unit 112 determines that there is an instruction to start the regeneration process from the regeneration execution determination unit 118, the fuel control unit 112 increases the fuel injection amount from the fuel injection device 14 by post injection or the like, thereby being included in the exhaust gas. Increase the amount of unburned fuel. The unburned fuel contained in the exhaust gas reacts at the catalyst unit 18 to raise the temperature of the exhaust gas, so that the particulate matter deposited on the filter unit 19 burns. Thus, the reproduction process is performed.

  The travel environment recognition unit 114 recognizes a travel environment outside the vehicle based on color information and position information in an image captured by the imaging device 21. Here, the traveling environment includes the state of the road in front of the vehicle accompanying the traveling of the vehicle, the state of the building located outside the road, the traveling state of the automobile traveling or crossing the road, the traveling state of pedestrians, etc. Comprehensive environmental information including Based on such a driving environment, for example, an obstacle or the like in the image is identified, a collision with the obstacle is avoided, or the relative distance (inter-vehicle distance) from the preceding vehicle is kept at a predetermined distance So-called following cruise control that follows the vehicle and so-called constant speed cruise control that travels while maintaining the vehicle speed at a predetermined target speed are realized. Here, the traveling environment is recognized using functions used for such collision avoidance processing, follow-up cruise control, constant speed cruise control, and the like.

  First, the driving environment recognition unit 114 acquires image data from each of the two imaging devices 21 and selects blocks corresponding to blocks arbitrarily extracted from one of the two images (for example, an array of horizontal 4 pixels × vertical 4 pixels). The parallax is derived using so-called pattern matching that is searched from the other image. Here, “horizontal” indicates the horizontal direction of the captured image, and “vertical” indicates the vertical direction of the captured image. The travel environment recognition unit 114 performs such block-based parallax derivation processing for all blocks displayed in the detection area (for example, horizontal 600 pixels × vertical 180 pixels). Here, the block is assumed to be horizontal 4 pixels × vertical 4 pixels, but the number of pixels in the block can be arbitrarily set.

  Subsequently, the traveling environment recognition unit 114 derives three-dimensional position information including a horizontal distance, a height, and a relative distance using a so-called stereo method based on the parallax for each block in the detection area. Here, the stereo method is a method of deriving a relative distance of the block with respect to the imaging device 21 from the parallax of the block by using a triangulation method. At this time, the traveling environment recognition unit 114 determines the height of the block from the road surface based on the relative distance of the block and the distance on the detection area from the point on the road surface to the block at the same relative distance as the block. Is derived.

  Next, the traveling environment recognition unit 114 has an arbitrary block as a base point, and the horizontal distance difference, height difference, and relative distance difference are within a predetermined range (for example, 0.1 m). Blocks are grouped on the assumption that they correspond to the same three-dimensional object. In this way, a three-dimensional object that is a virtual block group is generated. The above range is represented by a distance in real space, and can be set to an arbitrary value by a manufacturer or a passenger. Further, the driving environment recognition unit 114 also adds a block having a horizontal distance difference, a height difference, and a relative distance difference within a predetermined range with respect to a block newly added by grouping. Group. As a result, all blocks that can be assumed to be the same specific object are grouped.

  Subsequently, the traveling environment recognition unit 114 determines that the grouped three-dimensional object satisfies a predetermined condition corresponding to a predetermined vehicle (for example, the three-dimensional object is positioned on the road and the size of the entire three-dimensional object is large. If the size corresponds to the size of the specific object “vehicle”), the three-dimensional object is specified as the specific object “vehicle”. Then, the traveling environment recognition unit 114 identifies a vehicle having the same traveling direction as that of the own vehicle based on the positional relationship with the own vehicle and the relative speed among the specific item “vehicle” as a preceding vehicle. The preceding vehicle specified in this way is a target of collision avoidance or a target of tracking in the tracking cruise control.

  In addition, the traveling environment recognition unit 114 determines that the three-dimensional object satisfies a predetermined condition corresponding to the traffic signal (for example, the position, size, outer diameter shape, color of the light emitting unit, etc. ”), The three-dimensional object is specified as the specific object“ signal ”. The traffic light identified here is used for control for automatically stopping the vehicle when the lighting color is red. Since the specific processing of the specific object performed by the traveling environment recognition unit 114 described above can employ various existing technologies such as Japanese Patent No. 5580233, detailed description thereof is omitted here.

  By the way, in the regeneration process of the filter unit 19 described above, it is necessary to raise the temperature of the exhaust gas to a temperature higher than the temperature at which the particulate matter burns, but the vehicle frequently stops in an urban area and the temperature of the exhaust gas is sufficiently increased. If it is not heated, the fuel consumption will increase and the regeneration process will not proceed. In the present embodiment, in order to suppress (avoid) such inefficient regeneration processing, the vehicle stop prediction unit 116 and the regeneration execution determination unit 118 perform the following processing.

  The vehicle stop prediction unit 116 performs a prediction process for predicting the stop of the vehicle based on the specific object specified by the traveling environment recognition unit 114. For example, the vehicle stop prediction unit 116 identifies the lighting color of the traffic light corresponding to the road on which the vehicle travels, and predicts that the vehicle will stop when the traffic light is red. Further, the vehicle stop prediction unit 116 predicts that the vehicle is stopped based on the distance to the preceding vehicle, for example, when the preceding vehicle is stopped.

  When the vehicle is predicted to stop, the vehicle stop prediction unit 116 determines, for example, the distance to the traffic signal or the preceding vehicle depending on the vehicle speed, the distance to the traffic light whose red color is red, or the distance to the preceding vehicle, for example. Is divided by the vehicle speed to calculate the time until the vehicle stops.

  The reproduction execution determination unit 118 determines whether to start the reproduction process based on the result of the prediction process by the vehicle stop prediction unit 116 when the reproduction process is not being performed. Specifically, when the vehicle stop prediction unit 116 predicts that the vehicle will stop, the regeneration execution determination unit 118 determines whether to start the regeneration process.

  In addition, when the reproduction process has already started (during the reproduction process), the reproduction execution determination unit 118 determines whether or not to continue the reproduction process based on the result of the prediction process. Specifically, when the vehicle stop prediction unit 116 predicts that the vehicle will stop, the regeneration execution determination unit 118 determines whether or not to continue the regeneration process.

  Various conditions that trigger the execution of the regeneration process can be set in addition to the result of the prediction process of the vehicle stop prediction unit 116. Here, for the sake of easy understanding, the start and the continuation of the regeneration process are performed. The description of other conditions for determining is omitted.

  FIG. 2 is an explanatory diagram for explaining the execution period of the reproduction process. In FIG. 2, the horizontal axis represents time, and the vertical axis represents the vehicle speed and the state of the regeneration process (whether the regeneration process is being performed or stopped).

  In FIG. 2, a case where the amount of particulate matter deposited increases and the regeneration necessity determination unit 110 determines that regeneration processing is necessary is taken as an example. In the comparative example shown in FIG. 2A, after the vehicle has started, when the regeneration necessity determination unit 110 determines that the regeneration process is necessary, the regeneration process starts in response to various conditions such as the vehicle speed and elapsed time. (Time ta). However, when the vehicle stops for a short time, the regeneration process is terminated (time tb), and the exhaust gas is not sufficiently heated and fuel is consumed.

  On the other hand, in the present embodiment, the regeneration necessity determination unit 110 determines that the regeneration process is necessary, and the vehicle stop prediction unit 116 determines that the vehicle is within the first time (regeneration completion time) even if the above various conditions are satisfied. If it is predicted to stop, the reproduction execution determination unit 118 does not start the reproduction process as shown in FIG. Therefore, fuel consumption for the period from time ta to time tb when the fuel was supposed to be injected is suppressed (indicated by hatching in FIG. 2B). Here, the first time is, for example, the time taken from the start to the completion of the regeneration process, and may be a fixed value set in advance, or the amount of particulate matter deposited (output of the pressure sensor 20) or exhaust gas It may be variably set according to the temperature.

  Further, as shown in FIG. 2 (c), even after the regeneration execution determination unit 118 determines that the regeneration process is to be performed once and starts the regeneration process, the vehicle stop prediction unit 116 performs the second time (reproduction). If it is predicted that the vehicle will stop within the completion time), the reproduction execution determination unit 118 stops the reproduction process being performed. Therefore, fuel consumption for the period from time tc to time td when fuel should have been injected is suppressed (indicated by hatching in FIG. 2C).

  Here, the second time is a time taken to complete the reproduction process being performed, and may be a fixed value set in advance, or the elapsed time from the start of the reproduction process is counted, and the first time described above is reached. It may be a difference value obtained by subtracting the elapsed time from (the time from the start to completion of the reproduction process). The second time may be variably set according to the amount of particulate matter deposited and the temperature of the exhaust gas. Furthermore, the temperature of the filter unit 19, the outside air temperature, and the coolant temperature of the engine 1 may be used as parameters for determining the second time. The temperature of the filter unit 19 is estimated from, for example, the temperature of the exhaust gas, the fuel injection amount, the vehicle body temperature, and the like.

  FIG. 3 is a flowchart showing a process flow of the vehicle control method. The process shown in FIG. 3 is repeatedly executed at a predetermined cycle. As shown in FIG. 3, the reproduction necessity determination unit 110 determines whether reproduction processing is being performed (S200). When the regeneration process is not being performed (NO in S200), the regeneration necessity determination unit 110 determines whether the regeneration process is necessary based on the signal from the pressure sensor 20 (S202). If the regeneration process is not necessary (NO in S202), the vehicle control process is terminated.

  When the regeneration process is necessary (YES in S202), the vehicle stop prediction unit 116 performs a prediction process for predicting the stop of the vehicle (S204). As a result of the prediction process, when it is determined that the vehicle stops within the first time (YES in S206), the vehicle control process is terminated. If it is determined that the vehicle does not stop within the first time (NO in S206), the regeneration execution determination unit 118 causes the fuel control unit 112 to increase the fuel injection amount and start the regeneration process (S208). Then, the vehicle control process ends.

  When it is determined that the regeneration process is being performed in the regeneration process execution determination process S200 (YES in S200), the regeneration necessity determination unit 110 performs the regeneration process based on the signal from the pressure sensor 20. It is determined whether a completion condition is satisfied (S210). If the completion condition for the regeneration process is satisfied (YES in S210), the fuel control unit 112 stops increasing the fuel injection amount, stops the regeneration process (S212), and ends the vehicle control process.

  If it is determined in the completion condition determination process S210 that the end condition is not satisfied (NO in S210), the vehicle stop prediction unit 116 performs a prediction process for predicting the stop of the vehicle (S214). As a result of the prediction process, when it is determined that the vehicle will stop within the second time (YES in S216), the process is transferred to the reproduction process stop process S212 to stop the reproduction process. If it is determined that the vehicle does not stop within the second time (NO in S216), the vehicle control process is terminated. As a result, the reproduction process is continued.

  As described above, when the regeneration process is not performed, the regeneration execution determination unit 118 performs the regeneration process based on the prediction process result of the vehicle stop prediction unit 116 in addition to the determination result of the regeneration necessity determination unit 110. Since it is determined whether or not to start, it is possible to avoid performing inefficient regeneration processing and suppress fuel consumption.

  Further, during the reproduction process, the reproduction execution determination unit 118 determines whether or not to continue the reproduction process based on the prediction process result of the vehicle stop prediction unit 116, and thus shortens the duration of the inefficient reproduction process. In addition, fuel consumption can be suppressed.

  Further, when it is determined as a result of the prediction process that the vehicle is to be stopped within the reproduction completion time (first time, second time), the reproduction execution determination unit 118 does not start the reproduction process or is performing the reproduction process being performed. To stop. Therefore, it is possible to accurately determine the case of inefficient reproduction processing.

(Modification)
In the vehicle control device 100 of the above-described embodiment, the configuration in which the regeneration execution determination unit 118 determines the start or continuation of the regeneration process based on whether or not the vehicle stops within the regeneration completion time has been described as an example. In the modification, a case will be described in which the start or continuation of the reproduction process is determined based on conditions different from those in the above-described embodiment.

  FIG. 4 is a schematic diagram showing a configuration of the engine 31 in the modified example. Constituent elements that are substantially the same as those of the engine 1 described above are denoted by the same reference numerals and description thereof is omitted. Here, the regeneration execution determination unit 318 of the vehicle control device 300 will be described in detail.

  For example, when the vehicle stops and enters an idle state, the temperature of the exhaust gas becomes inefficient compared to when the vehicle is traveling, and more fuel is required for the temperature increase. Nevertheless, when the engine load before the stop is continuously large, the exhaust gas or the filter unit 19 is already at a high temperature, or when the regeneration process is almost completed, the regeneration process is performed in an idle state. May be desirable.

  Therefore, when the regeneration process is not performed, the regeneration execution determination unit 318 determines that the regeneration process is necessary by the regeneration necessity determination unit 110 and determines that the vehicle stops within the first time as a result of the prediction process. If it is determined whether or not the reproduction process can be performed in the idle state, and if it is determined not to perform the reproduction process in the idle state, the reproduction process is not started.

  Therefore, it is possible to accurately determine when it is inefficient to continue the reproduction process in the idle state and when it is desirable to continue the reproduction process in the idle state and avoid performing the inefficient reproduction process. Is possible.

  Also, during the playback process, if the playback execution determination unit 318 determines that the vehicle will stop within the second time as a result of the prediction process, the playback execution determination unit 318 determines whether or not the playback process can be performed in the idle state and performs the playback process in the idle state. If it is determined not to be performed, the playback process being performed is stopped.

  Therefore, it is possible to accurately determine when it is inefficient to continue the reproduction process in the idle state and when it is desirable to continue and complete the reproduction process in the idle state, and shorten the time for performing the inefficient reproduction process. It becomes possible.

  Here, the regeneration execution determination unit 318 determines whether or not the regeneration process can be performed in an idle state from a parameter including at least the temperature of the exhaust gas. Examples of other parameters include the amount of particulate matter deposited, the temperature of the filter unit 19, the outside air temperature, the cooling water temperature of the engine 31, and the like. Furthermore, the regeneration execution determination unit 318 may derive a shortage time that is insufficient until the completion of the regeneration process when the vehicle is stopped, and determine whether or not the regeneration process can be performed in the idle state based on the shortage time.

  FIG. 5 is a flowchart showing a process flow of the vehicle control method according to the modification. Here, processing steps that are substantially the same as those of the above-described embodiment are denoted by the same reference numerals and description thereof is omitted.

  As shown in FIG. 5, when it is determined that the vehicle does not stop within the first time as a result of the vehicle stop prediction process S204 (NO in S206), the process proceeds to the regeneration process start process S208. If it is determined that the vehicle stops within the first time (YES in S206), regeneration execution determination unit 318 determines the performance of the regeneration process in the idle state (S306). If it is determined that the reproduction process in the idle state is to be performed (YES in S306), the process proceeds to the reproduction process start process S208. If it is determined not to perform the regeneration process in the idle state (NO in S306), the vehicle control process is terminated.

  When it is determined that the vehicle does not stop within the second time as a result of the vehicle stop prediction process S214 (NO in S216), the vehicle control process ends. If it is determined that the vehicle stops within the second time (YES in S216), the regeneration execution determination unit 318 determines the performance of the regeneration process in the idle state (S316). If it is determined not to perform the reproduction process in the idle state (NO in S316), the process proceeds to the reproduction process stop process S212. If it is determined to perform the regeneration process in the idle state (YES in S316), the vehicle control process is terminated.

  The preferred embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the above-described embodiments, and various modifications within the scope described in the claims. Needless to say, the modified examples also belong to the technical scope of the present invention.

  For example, in the above-described embodiment and modification, a direct injection engine is exemplified as the engine 1, but a port injection type engine or an engine that performs both direct injection and port injection may be used. Good. Moreover, it is not restricted to a gasoline engine, A diesel engine may be sufficient. In the case of a diesel engine, DPF (Diesel particulate filter) is used instead of GPF. Further, the case where the vehicle stop prediction unit 116 predicts the stop of the vehicle based on the specific objects “traffic light” and “preceding vehicle” specified by the traveling environment recognition unit 114 has been described. However, the vehicle stop prediction unit 116 may predict the stop of the vehicle by, for example, a parking sign specified as a specific object and the deceleration of the vehicle. Further, the vehicle stop prediction unit 116 may determine that the vehicle stops when the vehicle decelerates close to a place (parking or the like) where the vehicle is estimated to stop based on the output from the car navigation device, for example. Good.

  In the above-described embodiment, the reproduction execution determination unit 118 determines that the reproduction process is necessary by the reproduction necessity determination unit 110, and determines that the vehicle stops within the reproduction completion time as a result of the prediction process. The case where the process is not started or the reproduction process being performed is stopped has been described. However, if it is predicted that the vehicle will be stopped as a result of the prediction process without setting or deriving the reproduction completion time, the reproduction execution determination unit 118 does not start the reproduction process or the reproduction process being performed May be determined to stop.

  Note that each step of the vehicle control method of the present specification does not necessarily have to be processed in time series in the order described as a flowchart, and may include processing in parallel or by a subroutine.

  INDUSTRIAL APPLICABILITY The present invention can be used for a vehicle control apparatus that performs a regeneration process for regenerating a filter unit by burning particulate matter deposited on a filter unit of a vehicle exhaust gas.

19 Filter unit 100, 300 Vehicle control device 110 Regeneration necessity determination unit 112 Fuel control unit 116 Vehicle stop prediction unit 118, 318 Regeneration execution determination unit

Claims (3)

Vehicle control for performing regeneration processing for regenerating the filter unit by burning the particulate matter deposited on the filter unit for removing the particulate matter contained in the exhaust gas of the vehicle by raising the temperature of the exhaust gas A device,
A regeneration necessity determination unit that determines whether the regeneration process is necessary based on the amount of particulate matter deposited;
A fuel control unit for increasing the fuel injection amount to raise the temperature of the exhaust gas and performing the regeneration process;
A vehicle stop prediction unit for performing a prediction process for predicting the stop of the vehicle;
When the reproduction process is not performed and the reproduction necessity determination unit determines that the reproduction process is necessary, the vehicle is within a reproduction completion time which is a time when the reproduction process is completed as a result of the prediction process. A reproduction execution determination unit that determines whether or not to start the reproduction process based on whether or not is stopped ;
A vehicle control device comprising: Vehicle control for performing regeneration processing for regenerating the filter unit by burning the particulate matter deposited on the filter unit for removing the particulate matter contained in the exhaust gas of the vehicle by raising the temperature of the exhaust gas A device,
A fuel control unit for increasing the fuel injection amount to raise the temperature of the exhaust gas and performing the regeneration process;
A vehicle stop prediction unit for performing a prediction process for predicting the stop of the vehicle;
During the reproduction process, reproduction that determines whether or not to continue the reproduction process based on whether or not the vehicle stops within a reproduction completion time that is a time when the reproduction process is completed as a result of the prediction process An execution determination unit;
A vehicle control device comprising:   The regeneration execution determining unit determines that the regeneration process is necessary by the regeneration necessity determining unit, and as a result of the prediction process, determines that the vehicle stops within a regeneration completion time that is a time for completing the regeneration process. In this case, based on at least a parameter including the temperature of the exhaust gas, it is determined whether or not the regeneration process can be performed in the idle state, and when it is determined that the regeneration process in the idle state is not performed, the regeneration process is not started, or The vehicle control device according to claim 1, wherein the regeneration process being performed is stopped.

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