JP2016089669A - Display control device of vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a change of a display state of an indicator accompanied by an increase/decrease of instantaneous fuel consumption when determining the lighting and lights-out of the indicator according to the instantaneous fuel consumption, in a display control device of a vehicle which employs an automatic transmission.SOLUTION: Control means (14) comprises: gear change control means (17) which performs engine torque control at a gear change of a vehicle (1); instantaneous fuel consumption calculation means (18) which calculates instantaneous fuel consumption on the basis of a traveling distance and a fuel consumption amount of the vehicle (1) within a set time; and display determination means (19) which determines the lighting display of an indicator (13) on the basis of the instantaneous fuel consumption calculated by the instantaneous fuel consumption calculation means (18), and an instantaneous fuel consumption threshold which is used in the appropriateness determination of the instantaneous fuel consumption. Within a period in which the engine torque control is performed, the control means holds the lighting display or lights-out display of the indicator (13) before the engine torque control is performed.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a display control apparatus for a vehicle, and more particularly to a display control apparatus for a vehicle that employs an automatic transmission (AMT) to display an indicator when a driving state with good fuel consumption is determined. .

The vehicle is mounted with an internal combustion engine that generates a driving force and an automatic transmission that is connected to the internal combustion engine and transmits the driving force of the internal combustion engine. Some vehicles are equipped with a display control device that turns on and displays an indicator when it is determined that the driving state has good fuel efficiency.
As such a vehicle display control device, for example, there are the following prior art documents.

JP 2013-204579 A JP 2012-031732 A

The vehicle control device according to Patent Document 1 is a lighting display control of an indicator (eco lamp) at the time of clutch operation in a vehicle equipped with a manual transmission, and holds a determination before the clutch operation at a predetermined time after the clutch operation. It is determined whether or not the running fuel consumption is good after a lapse of time.
The vehicle display control device according to Patent Literature 2 calculates the average fuel efficiency and the instantaneous fuel efficiency of actual traveling, the average fuel efficiency of actual traveling is equal to or greater than a predetermined threshold, and the instantaneous fuel efficiency corresponds to the ON / OFF state of the air conditioner. When the lighting condition is satisfied after a predetermined elapsed time has passed since the vehicle speed is equal to or higher than any predetermined threshold and the vehicle speed is higher than the predetermined threshold, the indicator is turned on.

However, in a vehicle that employs an automatic transmission (AMT) that does not include a torque converter, torque reduction that reduces torque during gear shifts to suppress shift shocks and shorten shift times. Since engine torque control such as control and torque increase control for increasing torque is performed, the instantaneous fuel consumption temporarily increases or decreases greatly. Therefore, when an attempt is made to determine whether the indicator is turned on or off based on the instantaneous fuel consumption, the display state of the indicator is changed even though the driver's accelerator operation is not changed.
For example, the time chart of FIG. 6 shows an operation in the case where the vehicle is operating with poor fuel consumption at the time of acceleration and is lit up momentarily by torque reduction control.
As shown in FIG. 6, in the initial stage of acceleration, the instantaneous fuel consumption falls below the instantaneous fuel consumption threshold, the indicator is turned off, and the torque reduction control determination is established and the torque reduction control is started (time t1). The instantaneous fuel consumption is increased, the instantaneous fuel consumption exceeds the instantaneous fuel consumption threshold at point A1, and the indicator is lit (time t2). After that, the instantaneous fuel consumption is below the instantaneous fuel consumption threshold at point A2 after the increase peak, and the indicator is turned off. (Time t3) After that, when the torque reduction control determination is not established (time t4), the instantaneous fuel consumption returns to the value before the start of the torque reduction control. For this reason, from the time when the instantaneous fuel consumption exceeds the instantaneous fuel consumption threshold at the A1 point (time t2) to the time when the instantaneous fuel consumption falls below the instantaneous fuel consumption threshold at the A2 point (time t3), the indicator instantaneously lights up.
In addition, the time chart of FIG. 7 shows an operation in the case where the fuel-efficient driving is performed at the time of deceleration and the light is extinguished by torque-up control.
As shown in FIG. 7, in the initial stage of deceleration, the instantaneous fuel consumption exceeds the instantaneous fuel consumption threshold, the indicator is lit, and when the torque up control determination is established and the torque up control is started (time t1). The instantaneous fuel consumption decreases, the instantaneous fuel consumption falls below the instantaneous fuel consumption threshold at point B1, and the indicator turns off (time t2). After that, the instantaneous fuel consumption exceeds the instantaneous fuel consumption threshold at point B2 after the decrease peak, and the indicator lights up. (Time t3) Thereafter, when the torque-up control determination is not established (time t4), the instantaneous fuel consumption returns to the value before the start of the torque-up control. For this reason, the indicator is instantly extinguished from the moment when the instantaneous fuel consumption falls below the instantaneous fuel consumption threshold at time B1 (time t2) until the momentary fuel consumption exceeds the instantaneous fuel consumption threshold at point B2 (time t3).

  Therefore, the present invention provides a vehicle that employs an automatic transmission and can prevent the display state of the indicator from changing as the instantaneous fuel consumption increases or decreases when determining whether the indicator is turned on or off based on the instantaneous fuel consumption. An object is to provide a display control device.

  The present invention provides a vehicle display control device that lights an indicator when it is determined that the vehicle is in a fuel-efficient driving state, shift control means for performing engine torque control during gear shifting of the vehicle, and driving of the vehicle within a set time Based on the instantaneous fuel consumption calculation means for calculating the instantaneous fuel consumption based on the distance and the fuel consumption, the instantaneous fuel consumption calculated by the instantaneous fuel consumption calculation means, and the instantaneous fuel consumption threshold value used to determine whether the instantaneous fuel consumption is good or bad, Display determining means for determining a lighting display, and during a period when the engine torque control is being performed, the indicator is turned on or off before the engine torque control is performed. .

  The present invention can prevent the display state of the indicator from changing as the instantaneous fuel consumption increases or decreases when it is determined whether the indicator is turned on or off based on the instantaneous fuel consumption in a vehicle employing an automatic transmission.

FIG. 1 is a schematic plan view of a vehicle. (Example) FIG. 2 is a block diagram of the display control apparatus. (Example) FIG. 3 is a flowchart of indicator display control. (Example) FIG. 4 is a time chart showing an indicator display operation by torque reduction control during operation during acceleration. (Example) FIG. 5 is a time chart showing an indicator display operation by torque-up control during operation during deceleration. (Example) FIG. 6 is a time chart showing an operation in a case where driving with poor fuel consumption is performed during acceleration and instantaneous lighting occurs due to torque reduction control. (Conventional example) FIG. 7 is a time chart showing an operation in a case where a driving with good fuel efficiency is performed at the time of deceleration and instantaneous light extinction occurs due to torque-up control. (Conventional example)

  An object of the present invention is to prevent an indicator display state from changing as the instantaneous fuel consumption increases or decreases when determining whether the indicator is turned on or off based on the instantaneous fuel consumption in a vehicle employing an automatic transmission. Is held before engine torque control.

1 to 5 show an embodiment of the present invention.
As shown in FIG. 1, the vehicle 1 includes front wheels 4 and 4 attached to both ends of a front axle 3 supported on the front portion of the vehicle body 2, and both ends of a rear axle 5 supported on the rear portion of the vehicle body 2. And rear wheels 6 and 6.
A power plant 7 is mounted on the front portion of the vehicle body 2.
The power plant 7 includes an internal combustion engine 8 that generates driving force, and an automatic transmission (AMT) 9 that is connected to the internal combustion engine 8 and transmits the driving force of the internal combustion engine 8.
The internal combustion engine 8 includes a fuel injection valve 10 that injects fuel into an internal combustion chamber.
The automatic transmission 9 includes, for example, a clutch 11 as means for transmitting a driving force generated by the internal combustion engine 8 to the manual transmission. Therefore, the vehicle 1 employs an automatic transmission 9 that does not include a torque converter.

As shown in FIG. 1, a display control device 12 is mounted on the vehicle 1. The display control device 12 includes an indicator (lamp) 13 and a control means (ECU) 14 connected to the indicator 13, and lights up the indicator 13 when it is determined that the driving state has good fuel efficiency.
As shown in FIG. 2, a gear position sensor 15 that detects the gear position of the automatic transmission 9 and a vehicle speed sensor 16 that detects the speed of the vehicle 1 are connected to the input side of the control means 14. Then, the control means 14 calculates the travel distance of the vehicle 1 from the vehicle speed detected by the vehicle speed sensor 16. Further, the control means 14 integrates the fuel injection amount injected from the fuel injection valve 10 to calculate the combustion consumption amount that is the fuel supplied to the internal combustion engine 8. An internal combustion engine 8 and an indicator 13 are connected to the output side of the control means 14.
The control unit 14 includes a shift control unit 17, an instantaneous fuel consumption calculation unit 18, a display determination unit 19, and an elapsed time measurement unit 20.
The shift control means 17 performs engine torque control at the time of gear shift of the automatic transmission 9 of the vehicle 1. That is, the shift control means 17 performs torque reduction control and torque up control as engine torque control in order to reduce the shift shock during the gear shift of the automatic transmission 9.
The instantaneous fuel consumption calculating means 18 calculates the instantaneous fuel consumption based on the travel distance of the vehicle 1 and the fuel consumption within the set time.
The display determination means 19 determines the lighting display of the indicator 13 based on the instantaneous fuel consumption calculated by the instantaneous fuel consumption calculation means 18 and the instantaneous fuel consumption threshold value used for determining whether the instantaneous fuel consumption is good or bad.
The elapsed time measuring means 20 starts measuring time after the end of engine torque control.

The control means 14 keeps the on / off display of the indicator 13 before the engine torque control is performed during the engine torque control period.
In addition, the control unit 14 displays the indicator 13 on or off until the elapse of a predetermined time (first time (Time 1), second time (Time 2)) measured by the elapsed time measuring unit 20 even after the engine torque control is finished. Holds off display.
That is, in this embodiment, the control means 14 receives the torque reduction control determination signal and the torque up control determination signal, and the indicator 13 is turned on / off before shifting for a certain time after the signal is established and after the signal is not established. Hold temporarily. That is, in the display control of the indicator 13, the indicator 13 lighting display is determined from the instantaneous fuel consumption. When the automatic transmission 9 performs a gear shift, the indicator 13 is temporarily turned on / off before the gear shift due to the increase or decrease in the instantaneous fuel consumption. Hold on. This prevents the display state of the indicator 13 from changing even though the driver maintains the accelerator operation state during gear shifting.

Next, display control of the indicator 13 according to this embodiment will be described with reference to the flowchart of FIG.
As shown in FIG. 3, when the program of the control means 14 is started (step A01), first, various signal input processes are performed (step A02).
Then, the control means 14 determines whether or not torque reduction control determination is established (step A03).
When this step A03 is NO, the control means 14 is the fixed time (first time in FIG. 4 (first time in FIG. 4) after the torque reduction control determination is established and after the torque reduction control determination is not established. See Time 1)) It is determined whether or not it has elapsed (step A04).
When this step A04 is NO, the control means 14 determines whether torque up control determination is materialized (step A05).
When this step A05 is NO, the control means 14 is the fixed time (second time (Time2 in FIG. 5) measured by the elapsed time measurement means 20 after the torque up control determination is not established and after the torque up control determination is not established. Refer to)) It is judged whether it has not passed (step A06).
That is, from step A03 to step A06, the control means 14 determines whether or not to hold the previous indicator 13 on / off state.
If step A06 is NO, all of the above conditions are not satisfied, and the control means 14 performs the on / off display determination of the indicator 13 by the display determination means 19 (step A07), and instantaneous fuel consumption When the instantaneous fuel consumption is below the predetermined instantaneous fuel consumption threshold, the indicator 13 is turned off when the instantaneous fuel consumption is lower than the predetermined instantaneous fuel consumption threshold.
On the other hand, if the steps A03 to A06 are YES and any one of the above conditions is satisfied, the control means 14 keeps the previous indicator 13 on / off (step A08).
Then, after the process of step A07 or after the process of step A08, the program is returned (step A09).

FIG. 4 shows a specific example of the operation of the indicator 13 by the torque reduction control in the operation at the time of acceleration.
As shown in FIG. 4, in the initial stage of acceleration, the instantaneous fuel consumption falls below the instantaneous fuel consumption threshold, the indicator 13 is turned off, and the torque reduction control determination is established and the torque reduction control is started (time t1), the indicator 13 is kept in the off state, and the instantaneous fuel consumption increases, and even if the instantaneous fuel consumption exceeds the instantaneous fuel consumption threshold at the point A1 ′ (time t2), the indicator 13 is kept off, After the increase peak, the instantaneous fuel consumption falls below the instantaneous fuel consumption threshold at time A2 ′ (time t3), the torque reduction control determination is not established (terminated) (time t4), and is constant from time t4 to time t5. The indicator 13 is kept off for the time (first time (Time 1)). That is, the indicator 13 is turned off from the time when the torque reduction control is started (time t1) until when a certain time has passed after the end of the torque reduction control (time t4) (shown by the hatched portion in FIG. 4). Retained. Thereby, even if the instantaneous fuel consumption exceeds the instantaneous fuel consumption threshold at the point A1 ′, the indicator 13 is not turned on, and the indicator 13 is not turned on instantaneously.

FIG. 5 shows a specific example of the operation of the indicator 13 by the torque-up control in the operation at the time of deceleration.
As shown in FIG. 5, in the initial stage of deceleration, the instantaneous fuel consumption exceeds the instantaneous fuel consumption threshold and the indicator 13 is lit, and when the torque up control determination is established and the torque up control is started (time t1), the indicator 13 is kept in the lighting state, and even if the instantaneous fuel consumption decreases and the instantaneous fuel consumption falls below the instantaneous fuel consumption threshold at the point B1 ′ (time t2), the indicator 13 is kept in the lighting state; After the decrease peak, the instantaneous fuel consumption exceeds the instantaneous fuel consumption threshold at time B2 ′ (time t3), the torque-up control determination is not established (terminated) (time t4), and is constant from time t4 to time t5. The indicator 13 is kept in the lighting state only for the time (second time (Time 2)). That is, the indicator 13 is in a lighting state from the start of the torque up control (time t1) to the time (time t5) after the end of the torque up control (time t4) (time t5). Retained. Thereby, even if the instantaneous fuel consumption falls below the instantaneous fuel consumption threshold at the point B1 ′, the indicator 13 is not turned off, and the indicator 13 is not turned off instantaneously.

As a result, according to this embodiment, the control means 14 holds the indicator 13 on or off before the engine torque control is performed during the engine torque control period.
As a result, the display result of the indicator 13 is retained in the torque reduction control and the torque up control that are performed in order to suppress the shift shock at the time of gear shift and to shorten the shift time. Can be prevented from turning on and off.
Further, the control means 14 keeps the indicator 13 on or off until a predetermined time (first time (Time 1), second time (Time 2)) has elapsed even after the end of engine torque control.
As a result, after the engine torque control is completed, it is possible to prevent instantaneous lighting and instantaneous light extinction due to a delay in increase / decrease in instantaneous fuel consumption due to engine torque control.

  The display control device according to the present invention can be applied to various vehicles. The indicator of the present plan is not limited to the eco lamp (eco drive indicator). For example, the indicator is illumination around the meter, and the color and illuminance may be changed depending on fuel consumption.

DESCRIPTION OF SYMBOLS 1 Vehicle 2 Car body 3 Front axle 4/4 Front wheel 5 Rear axle 6/6 Rear wheel 7 Power plant 8 Internal combustion engine 9 Automatic transmission 10 Fuel injection valve 11 Clutch 12 Display control device 13 Indicator 14 Control means (ECU)
DESCRIPTION OF SYMBOLS 15 Gear position sensor 16 Vehicle speed sensor 17 Shift control means 18 Instantaneous fuel consumption calculation means 19 Display determination means 20 Elapsed time measurement means

Claims (2)

  In a vehicle display control device that lights an indicator when it is determined that the driving state is good in fuel efficiency, a shift control unit that performs engine torque control at the time of gear shifting of the vehicle, a traveling distance and fuel consumption of the vehicle within a set time And determining whether the indicator is lit based on the instantaneous fuel consumption calculating means for calculating the instantaneous fuel consumption based on the amount, the instantaneous fuel consumption calculated by the instantaneous fuel consumption calculating means, and the instantaneous fuel consumption threshold value used for determining whether the instantaneous fuel consumption is good or bad Display determination means for performing display control of the vehicle, wherein the indicator is turned on or off before the engine torque control is performed during the engine torque control. apparatus.   After the end of the engine torque control, an elapsed time measuring means for starting the measurement of time is provided, and after the engine torque control ends, the indicator is turned on or off until a predetermined time measured by the elapsed time measuring means. The vehicle display control apparatus according to claim 1, wherein holding is performed.

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