JP2008247391A - Display device for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To effectively use an indicator displaying mileage as a numerical value. <P>SOLUTION: In an automobile with idle stop control for an engine performed, when idle stop is performed, engine stop time (idle stop time) is measured. Every time a selector button 28 is switched on, the display of the numerical value of a numerical value display section 26 is changed in the order of the display of an odometer, the display of a trip meter A, the display of a trip meter B, the display of the idle stop time, and the display of the odometer. Since the numerical value is displayed by changing over information on the mileage and the idle stop time by the use of the common numerical value display section, the indicator can be effectively used. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a display device for a vehicle, and more particularly to a display device for a vehicle mounted on a vehicle capable of automatically stopping and automatically starting an internal combustion engine.

Conventionally, as a display device for this type of vehicle, when the vehicle is traveling, the vehicle speed is displayed on a display (liquid crystal), and when the vehicle is stopped, information according to the state of the vehicle is used instead of the vehicle speed. What is displayed on a display is proposed (refer to patent documents 1). In this device, when the vehicle is stopped and the engine is in the idle stop state, the display unit is shared by displaying a symbol mark indicating that the engine is in the idle stop state instead of the vehicle speed on the display unit. ing.
JP 2002-205572 A (FIGS. 5 and 8)

  However, in such a display device for a vehicle, since it is necessary to use a display capable of displaying an idle stop symbol mark in order to share the display, the display that can be shared is limited. It becomes necessary to use a dedicated display. Further, in the conventional display device for a vehicle, it is only necessary to indicate on the display that the vehicle is in an idle stop state, and it is desirable to provide the driver with more detailed information regarding the idle stop.

  The display device for a vehicle according to the present invention is one of the objects to solve such problems and to display information related to the automatic stop of the internal combustion engine in common with a more general display mounted on the vehicle. . Another object of the display device for a vehicle of the present invention is to be able to display more detailed information related to the automatic stop of the internal combustion engine in common with a display mounted on the vehicle.

  The vehicle display device of the present invention employs the following means in order to achieve at least a part of the above object.

The vehicle display device of the present invention is
A display device for a vehicle mounted on a vehicle capable of automatically stopping and automatically starting an internal combustion engine,
Automatic stop relation data acquisition means for acquiring automatic stop relation data related to the automatic stop of the internal combustion engine;
Display means for displaying numerical values;
Display control is performed such that when predetermined data is numerically displayed on the display means and predetermined display switching is instructed, the acquired automatic stop related data is numerically displayed on the display means instead of the predetermined data. And a display control means.

  In the vehicle display device of the present invention, display control is performed so that predetermined data is numerically displayed. When a predetermined display switching is instructed, automatic stop-related data related to the automatic stop of the internal combustion engine is acquired and the predetermined data is acquired. Display control is performed so that the automatic stop related data acquired instead of the data is displayed numerically. Since the automatic stop related data can be displayed numerically using the common numerical display together with the predetermined data, the numerical display generally mounted on the vehicle can be used effectively. Further, since the automatic stop related data is displayed by numerical values, more detailed information can be notified as compared with the case of displaying only the automatic stop state.

  In such a vehicle display device of the present invention, the display means may be arranged so that the driver can visually recognize from the front.

  Further, in the vehicle display device of the present invention, the automatic stop relation data acquisition means is a stop time acquisition means for acquiring a stop time of the internal combustion engine due to the automatic stop as the automatic stop relation data, and the display control means May be a means for controlling the display so that the acquired stop time is numerically displayed on the display means. If it carries out like this, the stop time of the internal combustion engine by an automatic stop with predetermined data can be notified using a common numerical display. In the display device for a vehicle according to the present invention that displays the stop time of the internal combustion engine, the stop time acquisition means is means for acquiring the stop time from when the ignition switch is turned on as the stop time of the internal combustion engine. You can also In this way, it is possible to notify the stop time of the internal combustion engine due to the automatic stop while the ignition switch is turned on. In the display device for a vehicle according to the present invention that displays the stop time of the internal combustion engine, the stop time acquisition means is a means for acquiring a total stop time as the stop time of the internal combustion engine. You can also. Further, in the display device for a vehicle of the present invention that displays the stop time of the internal combustion engine, the stop time acquisition means starts from the time of the reset operation when a predetermined reset operation is performed as the stop time of the internal combustion engine. It may be a means for acquiring the stop time. In this way, the stop time of the internal combustion engine from a desired time point can be notified.

  In the display device for a vehicle according to the present invention, the display control means is a means for performing the display control on the assumption that the predetermined display switching is instructed when a predetermined switching operation is performed. You can also. In this way, the automatic stop related data can be notified at a desired time.

  In the display device for a vehicle according to the present invention, the vehicle-related display device further includes travel-related data acquisition means for acquiring travel-related data related to the travel of the vehicle, and the display control means acquires the travel relation acquired as the predetermined data. It may be a means for display control so that data is numerically displayed on the display means. If it carries out like this, driving related data and automatic stop related data can be displayed using a common numerical indicator. In this aspect of the vehicle display device of the present invention, the travel-related data may be data relating to the travel distance of the vehicle. Since there is little need to always display data related to the travel distance, the display can be shared more appropriately.

The display method of the present invention includes:
A display method for a display device for a vehicle mounted on a vehicle capable of automatically stopping and automatically starting an internal combustion engine,
When the predetermined data is numerically displayed and a predetermined display switching is instructed, the automatic stop related data related to the automatic stop of the internal combustion engine is acquired and the acquired automatic stop related data is used instead of the predetermined data. The gist is to display numerical values.

  In this display method of the present invention, display control is performed so that predetermined data is displayed numerically, and when predetermined display switching is instructed, automatic stop related data related to the automatic stop of the internal combustion engine is acquired and the predetermined data is displayed. Instead, display control is performed so that the acquired automatic stop-related data is displayed numerically. Since the automatic stop-related data can be displayed numerically using the common numerical display together with the predetermined data, the numerical display mounted on the vehicle can be used effectively. Further, since the automatic stop related data is displayed by numerical values, more detailed information can be notified as compared with the case of displaying only the automatic stop state.

  Next, the best mode for carrying out the present invention will be described using examples.

  Next, embodiments of the present invention will be described using examples. FIG. 1 is a configuration diagram showing an outline of the configuration of an automobile 40 on which a vehicle display device 20 according to an embodiment of the present invention is mounted. The core of the present invention resides in the vehicle display device 20 of the embodiment mounted on the automobile 40. For convenience of explanation, the automobile 40 will be briefly described first, and then the vehicle display device 20 of the embodiment will be described. Will be described.

  As shown in the figure, the automobile 40 shifts the power output from the engine 42 to the crankshaft 46 and an engine 42 driven by gasoline, an engine electronic control unit (hereinafter referred to as engine ECU) 44 that controls the engine 42. Then, an automatic transmission 48 that is transmitted to the drive wheels 54 a and 54 b via the differential gear 52, an automatic transmission electronic control unit (hereinafter referred to as “ATECU”) 50 that controls the shift of the automatic transmission 48, and a crankshaft of the engine 42 46, a motor generator 56 for exchanging power with the motor 46, a battery 60 for exchanging power via the motor generator 56 and an inverter 58, and starting and stopping the engine 42. It comprises a hybrid electronic control unit 70 that controls the driving of the motor generator 56, and a display device 20 for a vehicle of the embodiment for displaying a running condition of the vehicle.

  As shown in FIG. 1, the motor generator 56 is configured as, for example, a synchronous motor generator that is driven as an electric motor and also as a generator, and a motor pulley 66 and a crank of the engine 42 attached to the rotating shaft thereof. A belt 68 is hung on the engine-side pulley 64 connected to the shaft 46 via the clutch 62. Therefore, the motor generator 56 can generate power using the power output from the engine 42 to the crankshaft 46 to charge the battery 60, or can output power to the crankshaft 46 using the power from the battery 60.

  The hybrid electronic control unit 70 is composed of a microprocessor centered on a CPU. Although not shown in the drawing, a ROM that stores processing programs and data, a RAM that temporarily stores data, and an input / output port (not shown). , Equipped with a communication port. The hybrid electronic control unit 70 includes a motor speed and a motor temperature from a rotation speed sensor and a temperature sensor (not shown) attached to the motor generator 56, and a motor generator 56 from a current sensor (not shown) installed in the inverter 58. Phase current, battery temperature from a temperature sensor (not shown) attached to the battery 60, voltage sensor (not shown) attached near the output terminal of the battery 60, voltage between terminals and charge / discharge current from the current sensor, etc. From the hybrid electronic control unit 70, a drive signal to the starter motor 43 that cranks the crankshaft 46 of the engine 42, and a switching control signal to the inverter 58 that controls the motor generator 56. , Clutch 62 Like driving signal is output through the output port. Further, the hybrid electronic control unit 70 is connected to the engine ECU 44 and the ATECU 50 via a communication port, and if necessary, the data related to the state of the engine 42 from the engine ECU 44, the data related to the state of the automatic transmission 48 from the ATECU 50, and the like. The control signal is transmitted to the engine ECU 44 and the ATECU 50 as well as being received.

  In the vehicle 40 thus configured, the engine speed Ne is basically equal to or less than a predetermined number of revolutions when the accelerator pedal 74 is not depressed and the brake pedal is depressed while the accelerator pedal 74 is depressed when the vehicle is idled. The engine 42 is automatically stopped when a predetermined stop condition such as is established, and the engine 42 is automatically started by the motor generator 56 when a predetermined start condition is established such that the brake is turned off and the accelerator is turned on. Idle stop control is performed.

  Next, the vehicle display device 20 according to the embodiment will be described. As shown in FIG. 1, a display device 20 for a vehicle according to an embodiment includes a display 22 having a numerical value display unit 26 that displays numerical values, and a display electronic control unit 30 that controls display of data on the display 22. It is comprised by. FIG. 2 is an external configuration diagram illustrating an example of an external configuration of the display device 22, and FIG. 3 is a diagram illustrating a state in which the display device 22 is mounted on the automobile 40. As shown in FIG. 2, the display 22 displays a speedometer 23 that displays the vehicle speed of the automobile 40, a tachometer 24 that displays the rotational speed of the engine 42, a remaining amount of fuel, and a cooling water temperature of the engine 42. The fuel remaining amount / water temperature meter 25, the numerical value display unit 26 disposed at the lower part of the fuel remaining amount / water temperature meter 25 and displaying the numerical value by switching the mileage of the automobile 40 and the idle stop time of the engine 42 are displayed. A switching button 28 for instructing switching of numerical display is provided, and is arranged in front of the driver's seat so that the driver of the automobile 40 can see from the front (see FIG. 3). The display electronic control unit 30 is configured as a microprocessor centered on a CPU 32, and communicates with a ROM 34 that stores a processing program, a RAM 36 that temporarily stores data, and an input / output port (not shown). And a port (not shown). A display switching signal from the switching button 28 is input to the display electronic control unit 30 via an input port, and a control signal to the display 22 is output from the display electronic control unit 30 to an output port. It is output via. The display electronic control unit 30 communicates with the hybrid electronic control unit 70 via a communication port, and receives a signal necessary for display control of the display 22 from the hybrid electronic control unit 70.

  The operation of the vehicle display device 20 according to the embodiment configured as described above, in particular, a process for displaying numerically the mileage of the automobile 40 and the idle stop time of the engine 42 on the numerical display 26 will be described. In this process, an idle stop time measurement process and a display process are mainly performed. Hereinafter, these processes will be described in order.

  FIG. 4 is a flowchart illustrating an example of an idle stop time measurement process executed by the display electronic control unit 30 of the vehicle display device 20 according to the embodiment. The idle stop time measurement process is executed when an idle stop pulse signal transmitted by the hybrid electronic control unit 70 is received when the engine 42 is idling. An example of the idle stop pulse signal transmitted from the hybrid electronic control unit 70 is shown in FIG. As shown in the figure, the idle stop pulse signal is configured as a rectangular wave pulse signal having a predetermined cycle during the idle stop, and in the embodiment, a 0.1 sec cycle. Therefore, in the embodiment, the idle stop time measurement process is repeatedly executed every 0.1 sec while the engine 42 is idling. When the idle stop time measurement process is executed, the CPU 32 of the display electronic control unit 30 first counts up the value of the counter C by 1 (step S100), and the idle stop time is determined based on the value of the counter C. Is calculated (step S102), and this routine is terminated. The counter C is set to 0 as an initial value when the ignition switch 79 is turned on. In the embodiment, the idle stop time is calculated by repeatedly executing this routine every 0.1 sec. That is, the counter C is incremented by 1 every 0.1 sec, so that the value of the counter C is incremented by 10. This can be done by integrating the time every second.

  FIG. 6 is a flowchart illustrating an example of display processing executed by the display electronic control unit 30 of the vehicle display device 20 according to the embodiment. This display process is executed when the ignition switch 79 is turned on. When the display process is executed, the CPU 32 of the display electronic control unit 30 first performs an odometer display process (step S200), reads the ON / OFF state of the switching button 28 (step S202), and switches the switching button 28. The odometer display is maintained by repeating the processes of steps S200 and S202 until is turned on (step S204). In the odometer display processing, for example, the vehicle speed detected by the vehicle speed sensor 78 is received as a vehicle speed pulse signal from the hybrid electronic control unit 70, and the total vehicle travel distance is calculated by counting the received vehicle speed pulse signal, and this is calculated numerically. This is done by displaying on the display unit 26.

  When the switch button 28 is turned on during odometer display, trip meter A display processing is performed (step S206), the ON / OFF state of the switch button 28 is read (step S208), and the switch button 28 is turned on. The processing of steps S206 and S208 is repeated to maintain the trip meter A display (step S210). In the trip meter A display process, the vehicle speed detected by the vehicle speed sensor 78 is received from the hybrid electronic control unit 70 as a vehicle speed pulse signal, and the travel distance is calculated by counting the received vehicle speed pulse signal, and this is displayed numerically. This is done by displaying on the unit 26. If the switching button 28 is pressed for a predetermined time or longer while the odometer is displayed, the counted travel distance is reset to zero.

  When the switch button 28 is turned on while the trip meter A is displayed, the trip meter B display process is performed in the same manner as the trip meter A display process (step S212), and the ON / OFF state of the switch button 28 is read (step S212). (S214) The processing of steps S212 and S214 is repeated until the switching button 28 is turned on to maintain the trip meter B display (step S216). The trip meter B display process is the same process as the trip meter A display process, and a description thereof will be omitted.

  When the switch button 28 is turned on while the trip meter B is displayed, the idle stop time display process is performed (step S218), the ON / OFF state of the switch button 28 is read (step S220), and the switch button 28 is turned on. The process of steps S218 and 220 is repeated until the predetermined time (for example, 10 seconds) elapses until the idle stop time display is started or the idle stop time display is started (step S222). The idle stop time display process is performed by reading the idle stop time calculated in the idle stop time measuring process routine of FIG. When the switch button 28 is turned on during the idle stop time display or when a predetermined time has elapsed after the idle stop time display is started, the process returns to step S200 again and the above process is repeated.

  FIG. 7 is an explanatory diagram showing a state in which the travel distance display and the idle stop time display on the numerical display unit 26 are switched. As shown in the figure, basically, each time the switching button 28 is pressed, the display of the numerical value display unit 26 is switched in the order of odometer display, trip meter A display, trip meter B display, and idle stop time display. When the switch button 28 is pressed during the idle stop time display, the display returns to the odometer display.

  According to the vehicle display device 20 of the embodiment described above, the idle stop time is numerically displayed based on the operation of the switching button 28 on the numerical display unit 26 that numerically displays the travel distance of the automobile 40. Can be used effectively. Moreover, since the idle stop time is numerically displayed, the driver can be informed of detailed information regarding the idle stop as compared with the case where the idle stop state is simply displayed. As a result, it is possible to encourage the driver to drive for improving fuel efficiency.

  In the vehicle display device 20 according to the embodiment, the idle stop time after the ignition switch 79 is turned on is displayed on the numerical value display unit 26. However, the total idle stop time is displayed on the numerical value display unit 26. Alternatively, when a predetermined reset button is operated (for example, when the switching button 28 is pressed for a predetermined time or more while the idle stop time is displayed on the numerical value display unit 26), the reset button is operated. The idle stop time may be displayed on the numerical value display unit 26. Alternatively, two or more of an idle stop time after the ignition switch 79 is turned on, a total idle stop time, and an idle stop time after being reset may be displayed on the numerical value display unit 26 by switching. When displaying the total idle stop time, the value of the counter C is stored in the nonvolatile memory, and the value of the counter C is held while the ignition switch 79 is turned off. When the idling stop is performed, the count-up may be started from the value of the counter C held in the nonvolatile memory. Further, when displaying the idle stop time from when the reset button is operated, it is assumed that when the reset button is operated, the value of the counter C is returned to 0 by a reset processing routine (not shown) and counting up is started again. Good.

  In the vehicle display device 20 of the embodiment, the idle stop time itself of the engine 42 is numerically displayed on the numerical value display unit 26. However, the numerical display of other information relating to the idle stop, for example, the ignition switch 79 is turned on. The ratio (%) of the idle stop time to the present time may be displayed on the numerical value display unit 26 as a numerical value. In this case, the elapsed time after the ignition switch 79 is turned on is measured, and the idling stop time measured in the idle stop time measurement process of FIG. 4 is divided by the elapsed time after the ignition switch 79 is turned on. What should I do?

  In the display device 20 for a vehicle according to the embodiment, three displays of an odometer display, a trip meter A display, and a trip meter B display are performed as the travel distance display on the numerical display unit 26. One or two displays may be displayed, or four or more displays including other travel distance displays may be performed.

  In the vehicle display device 20 of the embodiment, the numerical display of the idle stop time is displayed on the numerical display unit 26 that displays the mileage of the automobile 40. However, any other display unit can be used as long as the numerical display is possible. It does not matter if it is displayed on the screen. For example, for a vehicle equipped with a display unit capable of displaying the vehicle speed numerically, the idle stop time may be switched to the vehicle speed display, or a vehicle equipped with a display unit capable of displaying the time numerically. Alternatively, the idle stop time may be switched to the time display for display.

  In the vehicle display device 20 of the embodiment, the display is switched from the numerical display of the travel distance to the numerical display of the idle stop time based on the operation of the switching button 28. However, other conditions, for example, the engine 42 is idle stopped. It is also possible to switch from the numerical display of travel distance to the numerical display of idle stop time.

  In the vehicle display device 20 according to the embodiment, the vehicle is mounted on the hybrid vehicle 40 including the engine 42 and the motor generator 56 as power sources. The vehicle may be mounted on any vehicle as long as the engine is automatically stopped when the condition is satisfied and the engine is automatically started when a predetermined start condition is satisfied.

  The embodiments of the present invention have been described using the embodiments. However, the present invention is not limited to these embodiments, and can be implemented in various forms without departing from the gist of the present invention. Of course you get.

It is a block diagram which shows the outline of a structure of the motor vehicle 40 by which the display apparatus 20 for vehicles which is one Example of this invention is mounted. It is an external appearance block diagram which shows the outline of the external appearance structure of the indicator 22 of the display apparatus 20 for vehicles of an Example. It is explanatory drawing which shows a mode that the indicator 22 of the display apparatus 20 for vehicles of an Example is mounted in the motor vehicle 40. FIG. It is a flowchart which shows an example of the idle stop time measurement processing routine performed by the display electronic control unit 30 of the display device 20 for vehicles of an Example. It is explanatory drawing which shows an example of the idle stop pulse signal transmitted by the electronic control unit for hybrids. It is a flowchart which shows an example of the display process performed by the display electronic control unit 30 of the display apparatus 20 for vehicles of an Example. It is explanatory drawing which shows an example of the display switching of the numerical display part.

Explanation of symbols

  Display device for vehicle, 22 display device, 23 speedometer, 24 tachometer, 25 fuel remaining amount / water temperature meter, 26 numerical display section, 28 switching button, 30 display electronic control unit, 32 CPU, 34 ROM, 36 RAM, 40 automobile, 42 engine, 43 starter, 44 engine electronic control unit, 46 crankshaft, 48 automatic transmission, 52 differential gear, 54a, 54b drive wheel, 56 motor generator, 58 inverter, 60 battery, 62 clutch, 64 engine side Pulley, 66 Motor-side pulley, 68 Belt, 70 Hybrid electronic control unit, 72 Shift lever, 73 Shift position sensor, 74 Accel pedal, 75 Accel pedal position Capacitors, 76 brake pedal, 77 a brake pedal position sensor, 78 vehicle speed sensor, 79 an ignition switch.

Claims (7)

A display device for a vehicle mounted on a vehicle capable of automatically stopping and automatically starting an internal combustion engine,
Automatic stop relation data acquisition means for acquiring automatic stop relation data related to the automatic stop of the internal combustion engine;
Mileage data acquisition means for acquiring mileage data relating to the mileage of the vehicle;
Display means for displaying numerical values;
A display switching instruction button for instructing display switching;
Each time the display switching instruction button is pressed, the numerical display on the display means of the acquired automatic stop relation data and the numerical display on the display means of the acquired travel distance data are toggled. Display control means for controlling the display
The display apparatus for vehicles which serves as a reset button which can reset the travel distance data and the automatic stop relation data by pressing the display switching instruction button for a predetermined time or more. The vehicle display device according to claim 1,
The display means is a display device for a vehicle in which a driver is disposed so as to be visible from substantially the front. A vehicle display device according to claim 1 or 2,
The automatic stop relation data acquisition means is a stop time acquisition means for acquiring a stop time of the internal combustion engine due to the automatic stop as the automatic stop relation data,
The display control means is a means for performing display control so that the acquired stop time is numerically displayed on the display means. A display device for a vehicle according to claim 3,
The automatic stop of the internal combustion engine is performed when the vehicle stops,
The display control means is a means for display control to switch from a numerical display of the travel distance data to a numerical display of the stop time of the internal combustion engine when the internal combustion engine is automatically stopped. A vehicle display device according to claim 3 or 4,
The display device for a vehicle, wherein the stop time acquisition means is a means for acquiring a stop time from when the ignition switch is turned on as a stop time of the internal combustion engine. A vehicle display device according to any one of claims 3 to 5,
The said stop time acquisition means is a means which acquires the total stop time as a stop time of the said internal combustion engine. Display apparatus for vehicles. A vehicle display device according to any one of claims 3 to 6,
The display device for a vehicle, wherein the stop time acquisition unit is a unit that acquires a stop time from the reset operation when a predetermined reset operation is performed as a stop time of the internal combustion engine.

Images