JP2009298271A - Driving support device and driving support method for hybrid vehicle, and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a driving support device and a driving support method for a vehicle, and a program capable of suppressing increase of unnecessary fuel consumption by urging a driver to pay attention to unnecessary driving operation and the like. <P>SOLUTION: When an engine is started in a motor travel section on a guided route, a CPU 51 stores start position information for indicating a position where the engine 4 is started in a driving history DB 46. In the motor travel section on the guided route displayed on a liquid crystal display 15, the CPU 51 displays the position where the engine 4 is started with a start position mark on the guided route when the start position information for indicating a position where the engine 4 is started is stored in the driving history DB 46. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a driving support device, a driving method, and a program for a hybrid vehicle.

Conventionally, various techniques for setting a travel plan for a hybrid vehicle based on road conditions on a route to a destination have been proposed.
For example, the route to the destination is divided into multiple sections at points where departures and stops are predicted, and the vehicle speed pattern is estimated for each section based on the road conditions of the route to the destination and the driving history of the driver However, there is a drive control apparatus for a hybrid vehicle that sets an operation schedule of the engine and motor for each section so that the fuel consumption to the destination is minimized based on the vehicle speed pattern and the fuel consumption characteristics of the engine ( For example, see Patent Document 1.)
JP 2000-333305 A (paragraphs (0008) to (0045), FIGS. 1 to 10)

  However, in the hybrid vehicle drive control apparatus described in Patent Document 1 described above, there are cases where the vehicle is not driven according to the driving schedule depending on the driving method. For example, although the motor travel section travels only with the motor, the operation schedule is set so that the fuel consumption to the destination is minimized by starting the engine due to unnecessary accelerator operation, brake operation, etc. Despite this, there is a problem that the amount of fuel consumption is higher than planned.

  Therefore, the present invention has been made to solve the above-described problems, and it is possible to suppress an unnecessary increase in fuel consumption by urging the driver to pay attention to unnecessary driving operations. An object of the present invention is to provide a driving support device, a driving support method, and a program for a hybrid vehicle.

  In order to achieve the above object, a driving support apparatus for a hybrid vehicle according to claim 1 is based on map information in the driving support apparatus for a hybrid vehicle (1) using a motor (5) and an engine (4) as drive sources. A display means (33) for displaying a map, and a start position storage means (33, 46) for acquiring and storing a start position at which the engine is started when the engine is started in a situation where the motor should run only. Display control means (33) for controlling the start position to be displayed on the map displayed by the display means when the start position is stored in the start position storage means. It is characterized by that.

  According to a second aspect of the present invention, there is provided a driving support apparatus for a hybrid vehicle according to the first aspect of the present invention. Section setting means (33) is provided, and the start position storage means (33, 46) acquires the start position at which the engine is started when the engine is started in a situation where the vehicle is present in the motor travel section. And memorize it.

  A hybrid vehicle driving support device according to claim 3 is the hybrid vehicle driving support device according to claim 2, wherein the hybrid vehicle driving support device (1) searches for a route to a destination based on the map information. 33), and the travel section setting means (33) sets the motor travel section on the route based on the route.

  Furthermore, the driving support apparatus for a hybrid vehicle according to a fourth aspect is the driving support apparatus for a hybrid vehicle according to any one of the first to third aspects, wherein the display control means (33) is the own vehicle. Is controlled so as to display the starting position when a predetermined distance before the starting position stored in the starting position storage means is reached.

  A hybrid vehicle driving support method according to claim 5 is a hybrid vehicle driving support method using a motor and an engine as driving sources, and a display step of displaying a map based on map information, and driving by the motor alone. A start position storing step for acquiring and storing a start position at which the engine has started; and a display step for storing the start position in the start position storing step when the engine is started in a power situation. And a display control step for controlling the start position to be displayed on the map displayed in (1).

  Further, the program according to claim 6 includes a display step of displaying a map based on map information on a computer mounted on a hybrid vehicle having a motor and an engine as drive sources, and an engine in a situation where the motor should run only by the motor. When the engine is started, a start position storing step for acquiring and storing a start position at which the engine has started, and a map displayed in the display step when the start position is stored in the start position storing step And a display control process for controlling the start position to be displayed.

  In the driving support apparatus for a hybrid vehicle according to claim 1 having the above-described configuration, the starting position where the engine is started in a situation in which the vehicle should run with only the motor is displayed on the displayed map. It is possible to call attention to operation and the like, and it is possible to suppress an unnecessary increase in fuel consumption.

  Further, in the driving support device for a hybrid vehicle according to claim 2, it is possible to accurately set the motor travel section that travels only by the motor based on the map information, and to prevent unnecessary fuel consumption in the motor travel section. It is possible to call attention.

  In the hybrid vehicle driving support device according to claim 3, since it is possible to appropriately set the motor travel section on the route to the destination based on the map information, the fuel consumption for the entire route is optimized. And an unnecessary increase in fuel consumption can be suppressed.

  Further, in the hybrid vehicle driving support device according to claim 4, when the host vehicle reaches a predetermined distance before the starting position where the engine is started, the starting position is displayed on the map. Attention to unnecessary driving operations and the like can be further effectively promoted.

  In the hybrid vehicle driving support method according to claim 5, since the starting position at which the engine is started in a situation where the motor should be driven only by the motor during driving is displayed on the displayed map, driving unnecessary for the driver is performed. It is possible to call attention to operation and the like, and it is possible to suppress an unnecessary increase in fuel consumption.

  Furthermore, in the program according to claim 6, the computer mounted on the hybrid vehicle that uses the motor and the engine as a drive source together reads the program and runs on the displayed map by the motor alone during traveling. Since the starting position at which the engine has started in the situation to be displayed is displayed, the driver can be alerted to unnecessary driving operations and the like, and an increase in unnecessary fuel consumption can be suppressed.

  Hereinafter, a driving support apparatus, a driving support method, and a program for a hybrid vehicle according to the present invention will be described in detail with reference to the drawings based on an embodiment in which a navigation apparatus is embodied.

  First, a schematic configuration of a vehicle control system 3 of a hybrid vehicle 2 equipped with the navigation device 1 according to the present embodiment as an in-vehicle device will be described with reference to FIGS. 1 and 2. FIG. 1 is a schematic configuration diagram of a vehicle control system 3 for a hybrid vehicle 2 according to the present embodiment. FIG. 2 is a block diagram schematically showing a control system of the vehicle control system 3.

  As shown in FIGS. 1 and 2, the vehicle control system 3 according to the present embodiment includes a navigation device 1, an engine 4, a drive motor 5, a generator 6, and a battery installed in the hybrid vehicle 2. 7, a planetary gear unit 8, a vehicle control ECU (Electronic Control Unit) 9, an engine control ECU 10, a drive motor control ECU 11, and a generator control ECU 12.

  Here, the navigation device 1 is provided on the center console or panel surface in the room of the hybrid vehicle 2 and outputs a liquid crystal display 15 that displays a map around the vehicle and a search route to the destination, and voice guidance regarding route guidance. A speaker 16 and the like are provided. Then, the current position of the hybrid vehicle 2 is specified by GPS or the like, and when the destination is set, the liquid crystal display 15 and the speaker 16 are used to search for the route to the destination and provide guidance according to the set route. To do. Further, in the navigation device 1 according to the present embodiment, as described later, when the engine is started during traveling in the motor traveling section that travels only by the drive motor 5, or the position where the engine has been started in the past in this motor traveling section. In some cases, the starting position of each engine is displayed on a map displayed on the liquid crystal display 15. The detailed configuration of the navigation device 1 will be described later.

  The engine 4 is an engine such as an internal combustion engine that is driven by fuel such as gasoline, light oil, and ethanol, and is used as a first drive source of the hybrid vehicle 2. The engine torque that is the driving force of the engine 4 is transmitted to the planetary gear unit 8, and the drive wheels 17 are rotated by a part of the engine torque distributed by the planetary gear unit 8, thereby driving the hybrid vehicle 2.

  The drive motor 5 is a motor that rotates based on the electric power supplied from the battery 7 and is used as a second drive source of the hybrid vehicle 2. The drive motor 5 is driven by the electric power supplied from the battery 7, and a drive motor torque that is a torque of the drive motor 5 is generated. Then, the drive wheels 17 are rotated by the generated drive motor torque, and the hybrid vehicle 2 is driven. Particularly, in the hybrid vehicle, the hybrid motor 2 is driven by the drive motor 5 when the engine 4 starts at a low efficiency or in a low rotation range such as an uphill road. Further, during acceleration traveling, the hybrid vehicle 2 is driven by generating driving force by both the engine 4 and the drive motor 5.

  Further, the drive motor 5 regenerates the vehicle inertia energy as electric energy. Specifically, when traveling downhill, the battery 7 is charged by causing the drive motor 5 to function as a generator according to the remaining capacity (SOC) of the battery 7. In particular, when engine braking is requested during downhill, the regenerative power of the drive motor 5 functioning as a generator can be increased to obtain a sufficient engine braking effect.

  When the driver steps on the foot brake and requests to stop the hybrid vehicle 2, the regenerative power of the drive motor 5 is further increased to operate as a regenerative brake, and the inertia energy of the hybrid vehicle 2 is regenerated as electric power. Thus, energy dissipation due to heat based on the friction brake is reduced. In the middle speed range, the drive motor 5 is in a regenerative state so that the engine 4 can be operated in a higher output and higher efficiency range. As a result, the engine efficiency can be improved, and the motor travel can be increased based on the charging of the battery 7 by the regeneration, so that the energy efficiency is improved. As the drive motor 5, an AC motor, a DC brushless motor or the like is used.

  The generator 6 is a generator that is driven by a part of the engine torque distributed by the planetary gear unit 8 to generate electric power. The generator 6 is connected to the battery 7 via a generator inverter (not shown). The generated alternating current is converted into a direct current and supplied to the battery 7. In addition, you may comprise the drive motor 5 and the generator 6 integrally.

  The battery 7 is a secondary battery as a power storage means capable of repeating charging and discharging, and a lead storage battery, a nickel cadmium battery, a nickel hydrogen battery, a lithium ion battery, a sodium sulfur battery, or the like is used. Further, the battery 7 is connected to a charging connector 18 provided on the side wall of the hybrid vehicle 2. The battery 7 can be charged by connecting the charging connector 18 to a power supply source such as an outlet in a home or a charging facility equipped with a predetermined charging facility. Furthermore, the battery 7 is also charged by regenerative power generated by the drive motor 5 or power generated by a generator.

  The planetary gear unit 8 includes a sun gear, a pinion, a ring gear, a carrier, and the like, distributes part of the driving force of the engine 4 to the generator 6 and transmits the remaining driving force to the driving wheels 17.

  The vehicle control ECU 9 is an electronic control unit that performs overall control of the hybrid vehicle 2. The vehicle control ECU 9 is connected to an engine control ECU 10 for controlling the engine 4, a drive motor control ECU 11 for controlling the drive motor 5, and a generator control ECU 12 for controlling the generator 6. In addition, the navigation device 1 is connected to a navigation ECU 33 described later. The vehicle control ECU 9 is connected to an SOC sensor (not shown) that detects the remaining capacity (SOC) of the battery 7.

The vehicle control ECU 9 includes an internal storage device such as a CPU 21 as an arithmetic device and a control device, a RAM 22 used as a working memory when the CPU 21 performs various arithmetic processes, and a ROM 23 in which a control program and the like are recorded. I have.
The engine control ECU 10, the drive motor control ECU 11, and the generator control ECU 12 include a CPU, a RAM, a ROM, and the like (not shown), and control the engine 4, the drive motor 5, and the generator 6, respectively.

Next, a schematic configuration of the navigation device 1 will be described with reference to FIG.
As shown in FIG. 2, the navigation apparatus 1 according to the present embodiment is based on a current position detection unit 31 that detects the current position of the host vehicle, a data recording unit 32 that records various data, and input information. The navigation ECU 33 that performs various arithmetic processes, the operation unit 34 that receives operations from the user, the liquid crystal display 15 that displays a map, a guidance route, and the like around the vehicle to the user, and voice guidance related to route guidance. Via the mobile phone network between the speaker 16 to be output and the DVD drive 37 that reads a DVD as a storage medium storing the program, the road traffic information center (not shown), the information distribution center that distributes map information, etc. And a communication module 38 for performing communication. The navigation ECU 33 is connected to a vehicle speed sensor (not shown) that detects the traveling speed of the vehicle.

Below, each component which comprises the navigation apparatus 1 is demonstrated in order.
The current position detection unit 31 includes a GPS 41, a geomagnetic sensor 42, a distance sensor 43, a steering sensor 44, a gyro sensor 45 as an azimuth detection unit, an altimeter (not shown), and the like. It is possible to detect the vehicle direction indicating the direction of the vehicle.

  The data recording unit 32 includes an external storage device and a hard disk (not shown) as a recording medium, a driving operation history database (driving operation history DB) 46 and a map information database (map information DB) 47 recorded on the hard disk. , And various parameters relating to the vehicle (for example, vehicle weight, rolling resistance coefficient, air resistance coefficient, foreshadow projection area, etc.) and a predetermined program, and a driver for writing predetermined data to the hard disk And a recording head (not shown).

  Here, the driving operation history DB 46 is a database that stores the driving operation history of the driver. Specifically, when the engine 4 is started in a motor travel section in which the hybrid vehicle 2 travels using only the drive motor 5, start position information (for example, date and time, link ID) indicating the position where the engine 4 is started. , Latitude and longitude, etc.) are stored cumulatively. Then, the navigation ECU 33 displays the position where the engine 4 is started in the motor travel section as will be described later based on the start position information indicating the position where the engine 4 is started stored in the driving operation history DB 46 (FIG. 3). reference).

  The map information DB 47 stores various map data necessary for route guidance, traffic information guidance, and map display. Specifically, facility data relating to facilities such as restaurants and parking lots, link data relating to roads (links), node data relating to node points, intersection data relating to each intersection, search data for searching for routes, and searching for points Image drawing data for drawing images such as search data, maps, roads, traffic information and the like on the liquid crystal display 15. In particular, the navigation apparatus 1 according to the present embodiment also records the gradient information 48 relating to the road gradient.

  The link data includes a link ID for identifying each link constituting the road, the width of the road to which the link belongs, the node ID of both end nodes, the gradient, the cant, the bank, the road surface state, the number of road lanes, the road Attributes (downhill road, uphill road, etc.), road type (national road, prefectural road, high-speed automobile national road, etc.) and the like are stored.

  The node data includes node points coordinates (positions), node IDs, node attributes (crossings, traffic lights, etc.) set according to actual road junctions (including intersections, T-junctions, etc.) and curvature radii. , Junction points, intersections, T-junctions, corner entrances and exits, points where the gradient changes, etc.), link ID list that is a list of link IDs of links connected to nodes, data on the height of each node point, etc. Etc. are memorized.

  The contents of the map information DB 47 are updated by downloading update information distributed from the information distribution center (not shown) via the communication module 38. Further, the navigation ECU 33 calculates the remaining capacity (SOC) of the battery 7 and the fuel consumption from the vehicle position to the destination based on the road shape of the link on the route to the destination and the gradient information 48 as will be described later. Thus, an operation plan is set (see FIG. 4).

  In addition, the navigation ECU 33 is used as a working memory for the CPU 51 as the arithmetic device and the control device for controlling the navigation device 1 as a whole, and for the CPU 51 to perform various arithmetic processes, and the route when the route is searched for. In addition to the RAM 52 for storing data and the like, a control program, a display processing program for displaying the position where the engine 4 is started on a map displayed on the liquid crystal display 15 in a motor travel section on the guidance route described later (see FIG. 3), an internal storage device such as a flash memory 54 for storing a program read from the ROM 53, a timer 55 for measuring time, and the like.

  The operation unit 34 is operated when inputting a departure point as a guidance start point and a destination point as a guidance end point, and includes a plurality of operation switches (not shown) such as various keys and buttons. The Then, the navigation ECU 33 performs control to execute various corresponding operations based on switch signals output by pressing the switches. In addition, a touch panel is provided on the front surface of the liquid crystal display 15, and various instruction commands can be input by pressing a button displayed on the screen of the liquid crystal display 15 or a map.

  The liquid crystal display 15 includes a map image including a road, traffic information, operation guidance, operation menu, key guidance, guidance route from the current position to the destination, guidance information along the guidance route, news, weather forecast, Time, mail, TV program, etc. are displayed.

The speaker 16 outputs voice guidance for guiding traveling along the guidance route and traffic information guidance based on an instruction from the navigation ECU 33.
The DVD drive 37 is a device that can read data recorded on a recording medium such as a DVD or a CD. Then, the map information DB 47 is updated based on the read data.

  In addition, the communication module 38 includes each of traffic information, traffic regulation information, parking lot information, traffic accident information, and the like transmitted from a road traffic information center such as a VICS (registered trademark: Vehicle Information and Communication System) center or a probe center. It is a communication device for receiving traffic information consisting of information, for example, a mobile phone or DCM. The communication module 38 is a communication unit that communicates with the information distribution center, and transmits / receives updated map information and the like of the latest version to / from the information distribution center.

  Next, a process executed by the navigation ECU 33 in the navigation device 1 having the above-described configuration, in which a position where the engine 4 is started is displayed on a map displayed on the liquid crystal display 15 in the motor travel section on the guidance route. The processing will be described with reference to FIGS. FIG. 3 is a main flowchart showing a process executed by the navigation ECU 33 and displaying the position where the engine 4 is started on the map displayed on the liquid crystal display 15 in the motor travel section on the guidance route. FIG. 4 is a sub-flow chart showing a sub-process of the “operation plan setting process” of FIG.

  Here, the “display process” shown in the flowchart of FIG. 3 is a process executed when a destination is set by the user. Note that the program shown in the flowchart in FIG. 3 is stored in the RAM 52 or ROM 53 provided in the navigation device 1 and is executed by the CPU 51.

  As shown in FIG. 3, first, in step (hereinafter abbreviated as “S”) 11, the CPU 51 acquires destination information related to the set destination. Specifically, the CPU 51 determines the destination from the map data stored in the map information DB 47 based on the coordinate position (for example, latitude or longitude), address, telephone number, etc. of the destination input via the operation unit 34. The position of the destination on the map is specified and stored in the RAM 52. Then, the CPU 51 searches for a guidance route from the departure point to the destination input via the operation unit 34 by a technique such as the Dijkstra method, and stores it in the RAM 52.

In S12, the CPU 51 proceeds to S13 after executing a sub-process of “operation plan setting process” described later.
In S13, the CPU 51 detects the vehicle position via the current position detection unit 31, reads out the driving plan from the RAM 52, and determines whether or not the vehicle position is traveling in the motor travel section on the guidance route. A determination process for determining Specifically, CPU51 specifies the link in which the own vehicle is located from the coordinate of the own vehicle position. Then, the CPU 51 acquires a travel pattern associated with each link on the guidance route determined in S12 as described later, and determines whether the travel pattern associated with the link is a motor travel section. The determination process to be executed is executed.

  When the vehicle is not traveling in the motor travel section on the guidance route, that is, when the travel pattern associated with the link where the host vehicle is located is not the motor travel section (S13: NO), the CPU 51 is described later. The process proceeds to S19.

  On the other hand, when the vehicle travels in the motor travel section of the control sections on the guidance route (S13: YES), the CPU 51 proceeds to the process of S14. In S <b> 14, the CPU 51 reads the link ID of each link in the control section currently traveling on the guidance route from the map information DB 47 and stores it in the RAM 52. Then, the CPU 51 reads out each link ID from the RAM 52 again in order from the place close to the departure place, and includes start position information (for example, date and time) indicating the position where the engine 4 is started, including the link ID from the driving operation history DB 46. Link ID, latitude and longitude, etc.) are read out and stored in the RAM 52 sequentially.

  Subsequently, in S15, the CPU 51 stores in the RAM 52 whether or not there is a start position where the engine 4 is started in the motor travel section, that is, whether or not start position information indicating the position where the engine 4 is started in S14 is stored. A determination process for determining whether or not is executed. If the starting position information indicating the position at which the engine 4 is started in S14 is not stored in the RAM 52 (S15: NO), the CPU 51 proceeds to the processing of S17.

On the other hand, when the starting position information indicating the position where the engine 4 is started in S14 is stored in the RAM 52 (S15: YES), the CPU 51 proceeds to the processing of S16.
In S <b> 16, the CPU 51 reads again each start position information indicating the position where the engine 4 is started from the RAM 52, and rounds the start position mark at a position corresponding to each start position information on the guidance path displayed on the liquid crystal display 15. Display in yellow.

  If the starting position information has been stored for a predetermined number of times or more (for example, three or more times) at the same point in the motor travel section, the starting position mark is displayed with a round red flashing display or the like for emphasis. Display may be performed.

Here, an example in which the position where the engine 4 has started in the motor travel section on the guidance route is marked and displayed on the map will be described with reference to FIG.
As shown in FIG. 5, the CPU 51 displays a map around the vehicle on the display screen of the liquid crystal display 15 and displays the guidance route 71 with a blue thick line. In addition, at the lower edge of the display screen, a detail button 72 for instructing display of a detailed map in which the map is enlarged, a display change button 73 for instructing change of display of a planar map, a three-dimensional map, etc. A re-search button 74 for instructing, a point registration button 75 for instructing registration of points and facilities, and a wide area button 76 for instructing display of a wide area map are displayed.

  Further, the CPU 51 displays a vehicle position mark 78 representing the vehicle position and the vehicle direction on the guidance route 71. Then, the CPU 51 reads from the RAM 52 start position information indicating the position where the engine 4 of the motor travel section 80 that is currently traveling has started. Subsequently, the CPU 51 displays the start position mark 81 in a round yellow color or the like at a position on the guidance route 71 corresponding to the coordinate position (for example, latitude and longitude) included in the start position information.

Subsequently, as shown in FIG. 3, in S <b> 17, the CPU 51 executes a determination process for determining whether or not the engine 4 has been started within the motor travel section. When the engine 4 is started, an engine start signal is input from the vehicle control ECU 9 to the CPU 51, and the CPU 51 detects whether the engine 4 is started based on whether the engine start signal is input. To do.
If the engine 4 is not started in the motor travel section (S17: NO), the CPU 51 proceeds to a process of S19 described later.

On the other hand, when the engine 4 is started within the motor travel section (S17: YES), the CPU 51 proceeds to the process of S18. In S <b> 18, the CPU 51 acquires vehicle information and stores it in the RAM 52.
For example, the CPU 51 acquires the link ID, gradient, road type, lane information, and the like of the starting point of the engine 4 from the map information DB 47 and stores them in the RAM 52 as vehicle information. Further, the CPU 51 acquires the vehicle position (for example, latitude and longitude), vehicle speed, acceleration, and the like via the current position detection unit 31 and stores them in the RAM 52 as vehicle information. Further, the CPU 51 acquires the current date / time data from the timer 55 and stores it in the RAM 52 as vehicle information.

Then, the CPU 51 reads date / time data, link ID, own vehicle position (for example, latitude and longitude), and the like from the vehicle information stored in the RAM 52, and indicates a start position indicating the position where the engine 4 is started in the motor travel section. The information is stored in the driving operation history DB 46 as information.
Subsequently, in S19, the CPU 51 acquires the current vehicle position via the current position detection unit 31, and reads the position on the map of the destination from the RAM 52, and determines the position of the vehicle and the destination. Is determined, that is, whether or not the destination of the guidance route has been reached is determined.

If the destination of the guidance route has not been reached (S19: NO), the CPU 51 executes the processing from S13 onwards.
On the other hand, when arriving at the destination of the guidance route (S19: YES), the CPU 51 ends the process.

Next, the sub-process of the “operation plan setting process” executed by the CPU 51 in S12 will be described with reference to FIG.
As shown in FIG. 4, first, in S111, the CPU 51 determines a point or slope where the stop and start are expected, such as a traffic signal, an intersection, a toll gate, a junction point, etc. to the destination on the guidance route searched in S11. The node corresponding to the changing point is read from the map information DB 47, and the guidance route is classified by each node.

  In S112, the CPU 51 sets each section divided on the guidance route as a control section for driving and controlling the engine 4, the drive motor 5, and the generator 6. The link data of each link from the map information DB 47 for each control section. , And the gradient (uphill / downhill) of each control section and the recommended vehicle speed are set based on the link data and the gradient information 48, and stored in the RAM 52. The recommended vehicle speed is preset for each road type and stored in the data recording unit 32. Therefore, the CPU 51 specifies the road type of each link based on the link data stored in the map information DB 47, and sets the recommended vehicle speed of the link.

  Subsequently, in S113, the CPU 51 reads the gradient and recommended vehicle speed of each control section from the RAM 52 for each control section to the destination, and stores the vehicle weight, rolling resistance coefficient, air resistance stored in the data recording unit 32 in advance. Output energy required for traveling in each control section is calculated from the coefficient, the foreshadow projection area, and the like.

  In S <b> 114, the CPU 51 acquires the remaining capacity (SOC) of the battery 7 detected by the SOC sensor (not shown) and stores it in the RAM 52. Then, the CPU 51 determines a traveling pattern for each control section to the destination from the SOC of the battery 7 and the output energy necessary for traveling.

  For example, the CPU 51 determines the travel pattern as a regenerative section in which the drive motor 5 is used as a regenerative brake in a downhill control section of a descending slope from the front of the expressway toll gate to a general road. Further, in a control section that performs low-speed travel such as a narrow street in a city area or a traffic jam section, a travel pattern is determined as a motor travel section that travels only by a motor. Further, in the control section where the climb slope continues, the travel pattern is determined as an assist travel section in which the engine 4 and the drive motor 5 are traveled together. In addition, the control section that travels at a high speed such as an expressway determines a travel pattern as an engine travel section that travels only by the engine 4. Further, after traveling in the assist travel section, in the next control section in which the SOC of the battery 7 becomes near the lower limit SOC, the travel pattern is determined as the power generation travel section in which the engine 4 travels and the generator 6 is driven.

  Then, the CPU 51 sets the travel pattern for each control section on the guide route determined as an operation plan for the guide route in association with each link belonging to each control section, and stores this operation plan in the RAM 52. Then, the sub-process is terminated, the process returns to the main flowchart, and the process proceeds to S13.

  As described above in detail, in the navigation device 1 mounted on the hybrid vehicle 2 according to the present embodiment, the CPU 51 indicates that the start position information indicating the position where the engine 4 is started is the driving operation in the motor travel section on the guidance route. When stored in the history DB 46, the starting position at which the engine 4 has started is displayed on the guidance route by the starting position mark, so it is possible to alert the driver to unnecessary driving operations, etc. It is possible to suppress an increase in necessary fuel consumption.

  In addition, the CPU 51 can appropriately set each control section including the motor travel section on the guide route to the destination based on various map data stored in the map information DB 47. The fuel consumption can be set optimally, and an unnecessary increase in the fuel consumption can be suppressed.

  In addition, this invention is not limited to the said Example, Of course, various improvement and deformation | transformation are possible within the range which does not deviate from the summary of this invention. For example, the following may be used.

(A) In S <b> 16, the CPU 51 displays a start position mark indicating the position where the engine 4 has started in the motor travel section on the guidance route displayed on the liquid crystal display 15, and the drive motor 5 of the hybrid vehicle 2. You may make it display the output meter which shows the output energy by the engine 4. FIG.
Here, an example in which an output meter indicating the output energy of the hybrid vehicle 2 is displayed on the display screen will be described with reference to FIG. FIG. 6 is substantially the same as the display screen shown in FIG. 5 except that the output meter 91 is displayed on the display screen.

  As shown in FIG. 6, the CPU 51 displays a vehicle position mark 78 representing the vehicle position and the vehicle direction on the motor travel section 80 of the guidance route 71. Further, the CPU 51 displays a start position mark 81 indicating the position where the engine 4 has started on the guidance path 71 in a round yellow color or the like, and alerts the driver to unnecessary driving operations such as sudden acceleration. And the output meter 91 which shows the output energy of the hybrid vehicle 2 is displayed on the right end part of a display screen, and the output bar 91A which shows the output of the drive motor 5 is displayed. Further, the output meter 91 displays a limit point 91B indicating the amount of output energy that requires the engine 4 to be started.

  As the output energy of the drive motor 5 increases or decreases, the output bar 91 </ b> A expands or contracts in the vertical direction to indicate a change in the output energy amount of the hybrid vehicle 2. When the output bar 91 reaches the limit point 91B, the engine 4 is started. When the engine 4 is started, the output bar 91 extends further upward as the output energy of the engine 4 increases, indicating a change in the output energy amount of the hybrid vehicle 2.

  Accordingly, the driver can check the output of the drive motor 5 by looking at the output bar 91A of the output meter 91, so that the output bar 91 does not exceed the limit point 91B, that is, the engine 4 does not start. Thus, it becomes possible to perform the driving operation easily. The output meter 91 may be displayed only when traveling in the motor travel section of the guide route 71.

  (B) In S18, by acquiring vehicle information, all the data of the vehicle information is stored in the driving operation history DB 46 in association with the starting position information indicating the position where the engine 4 has started in the motor travel section. You may do it. In S16, when the start position mark displayed on the display screen is pressed, the CPU 51 enlarges and displays the peripheral portion including the start position mark and drives the vehicle information corresponding to the start position mark. It is possible to read from the operation history DB 46, specify the cause of engine start based on the read vehicle information, and display the cause of the engine start on the display screen.

Here, an example of displaying the cause of unnecessary engine start when the start position mark 81 shown in FIG. 5 is pressed will be described with reference to FIG.
As shown in FIG. 7, when the starting position mark 81 shown in FIG. 5 is pressed, the CPU 51 enlarges and displays a peripheral portion including the starting position mark 81 and a vehicle corresponding to the starting position mark 81. Information is read from the driving operation history DB 46 and stored in the RAM 52.

Then, the CPU 51 reads the vehicle information from the RAM 52 again, specifies that the acceleration is large based on the read vehicle information, determines that “the engine 4 has started due to sudden acceleration”, and displays it on the upper end of the display screen. A message 95 of “Engine is ON due to sudden acceleration” is displayed.
Thus, the driver can confirm the cause of the engine 4 starting in the motor travel section 80 by pressing the start position mark 81 on the guide route 71.

  (C) In S <b> 16, the CPU 51 acquires the vehicle position via the current position detection unit 31 and stores it in the RAM 52. Then, each start position information indicating the position where the engine 4 is started is read again from the RAM 52, and the engine start position specified by each start position information is a predetermined distance from the own vehicle position (for example, about 500 m to 1 km ahead). May be displayed in round yellow or the like at a position corresponding to each start position information.

  As a result, when the current travel position of the hybrid vehicle 2 reaches a predetermined distance before the start position where the engine is started in the motor travel section on the guidance route, the start position mark corresponding to the start position is displayed on the map. Therefore, the driver can be alerted more effectively, and an unnecessary increase in fuel consumption can be further suppressed.

  (D) Even when the route or the destination is not set, the CPU 51 replaces the process of S12 with a predetermined section immediately before the own vehicle (for example, a section 100 m ahead from the own vehicle position). On the other hand, after reading the link data of each link in the section from the map information DB 47, setting the gradient (climbing slope / descending slope) of the section and the recommended vehicle speed, and determining the traveling pattern of the section based on these, You may make it perform the process of said S13-S18.

  (E) In S16, the starting position information stored during the current traveling (stored in the RAM 52 when the engine 4 is started in the motor traveling section set on the currently traveling guidance route 71). The starting position information) and the starting position information stored in the RAM 52 other than the starting position information stored during the current travel may be displayed on the liquid crystal display 15 in different display modes.

  Here, the starting position information stored during the current traveling and the starting position information stored in the RAM 52 other than the starting position information stored during the current traveling (hereinafter referred to as “starting position information stored in the past”). .) Will be described based on FIG. 8 with respect to an example of displaying on the liquid crystal display 15 in different display modes.

  As shown in FIG. 8, start position marks 82 and 83 corresponding to start position information stored in the past are displayed in round yellow on the guide path 71 indicated by a blue thick line. Then, when the engine 4 is started in the motor travel section 80 set on the guidance route 71, the CPU 51 acquires the vehicle position included in the vehicle information stored in the RAM 52 and is displayed on the liquid crystal display 15. The starting position mark 84 corresponding to the starting position stored at the time of the current travel is marked in a blue color on a round mesh at a location corresponding to the vehicle position on the guidance route 71 that is currently running.

  In this way, by displaying the start position stored at the time of the current travel and the start position stored in the past in different display modes, the driver can determine the position at which the driver performed an unnecessary driving operation during the current travel. It is possible to identify a position where an unnecessary driving operation has been performed in the past. Accordingly, it is possible to more effectively call attention to unnecessary driving operations.

1 is a schematic configuration diagram of a vehicle control system for a hybrid vehicle according to an embodiment. It is a block diagram which shows typically the control system of a vehicle control system. It is a main flowchart which shows the display process which is a process which navigation ECU performs, Comprising: The position which the engine started in the motor travel area is displayed on the map displayed on the liquid crystal display. FIG. 4 is a sub-flow chart showing a sub-process of “operation plan setting process” in FIG. 3. FIG. It is a figure which shows an example which displayed on the map the position which the engine started within the motor travel area on a guidance path | route. It is a figure which shows an example which displayed the output meter which shows the output energy of a hybrid vehicle on a display screen. It is a figure which shows an example which displayed the cause of the unnecessary engine starting, when the starting position mark shown in FIG. 5 is pressed down. It is a figure which shows an example which displayed on the map the position which performed the unnecessary engine start in the motor driving | running | working area on a guidance path | route.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Navigation apparatus 2 Hybrid vehicle 3 Vehicle control system 4 Engine 5 Drive motor 6 Generator 9 Vehicle control ECU
15 Liquid crystal display 21, 51 CPU
22, 52 RAM
23, 53 ROM
31 Current position detection unit 33 Navigation ECU
34 Operation unit 46 Driving operation history DB
47 Map information DB
71 Guide route 78 Vehicle position mark 80 Motor travel section 81, 82, 83, 84 Start position mark 91 Output meter 95 Message

Claims (6)

In a driving support device for a hybrid vehicle using a motor and an engine as drive sources,
Display means for displaying a map based on the map information;
A starting position storage means for acquiring and storing a starting position at which the engine is started when the engine is started in a situation in which the motor should run alone;
Display control means for controlling the start position to be displayed on the map displayed by the display means when the start position is stored in the start position storage means;
A driving support apparatus for a hybrid vehicle, comprising: A travel section setting means for setting a motor travel section that travels only by a motor based on the map information;
The start position storage means acquires and stores a start position at which the engine is started when the engine is started in a situation where the host vehicle is present in the motor travel section. Hybrid vehicle driving support device. Comprising route search means for searching for a route to the destination based on the map information;
The driving support apparatus for a hybrid vehicle according to claim 2, wherein the travel section setting means sets the motor travel section on the route based on the route.   The display control means controls to display the starting position when the host vehicle reaches a predetermined distance before the starting position stored in the starting position storage means. The driving support device for a hybrid vehicle according to any one of claims 1 to 3. In a driving support method for a hybrid vehicle using a motor and an engine as drive sources,
A display step of displaying a map based on the map information;
A start position storing step of acquiring and storing a start position at which the engine is started when the engine is started in a situation in which the motor should run alone;
If the starting position is stored in the starting position storage step, a display control step for controlling to display the starting position on the map displayed in the display step;
A driving support method for a hybrid vehicle, comprising: In a computer mounted on a hybrid vehicle that uses a motor and an engine as drive sources,
A display step of displaying a map based on the map information;
A start position storing step of acquiring and storing a start position at which the engine is started when the engine is started in a situation in which the motor should run alone;
If the starting position is stored in the starting position storage step, a display control step for controlling to display the starting position on the map displayed in the display step;
A program for running

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