KR101583999B1 - Apparatus and fuel calculation method for calculating distance to empty - Google Patents

Apparatus and fuel calculation method for calculating distance to empty Download PDF

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KR101583999B1
KR101583999B1 KR1020140140771A KR20140140771A KR101583999B1 KR 101583999 B1 KR101583999 B1 KR 101583999B1 KR 1020140140771 A KR1020140140771 A KR 1020140140771A KR 20140140771 A KR20140140771 A KR 20140140771A KR 101583999 B1 KR101583999 B1 KR 101583999B1
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fuel
amount
fuel amount
travelable distance
vehicle
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KR1020140140771A
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Korean (ko)
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이강호
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현대자동차주식회사
기아자동차주식회사
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Abstract

The present invention relates to a travelable distance arithmetic device and a travelable distance fuel amount method thereof, and more particularly to a traveling distance calculating method for checking whether a fuel remaining amount of a fuel gauge satisfies an overcurrent mode entry condition, And checks whether the vehicle is lubrication, and calculates the travelable distance fuel amount by using an arithmetic expression determined according to whether the vehicle is lubrication.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a distance-

The present invention relates to a travelable distance calculator capable of calculating a travelable distance more accurately by minimizing a difference between a remaining amount of fuel displayed on the fuel gauge and a remaining amount of fuel based on the fuel consumption of the engine, and a travelable distance fuel amount method thereof.

In general, a trip computer informs a driver of various information related to driving, such as a traveling distance, an average traveling speed, a traveling distance, an outside temperature, and a driving time.

In particular, the trip computer computes and displays the travelable distance that can be traveled with the remaining fuel by using the fuel consumption amount of the vehicle and the fuel gauge fuel amount, so that even if the fuel low warning light is illuminated during driving, the driver can operate without being embarrassed.

However, in an actual vehicle, it is possible to refuel more than 15 liters (L) while the fuel gauge is full. However, since the fuel amount can not be detected through the fuel gauge, a large error occurs in calculation of the travelable distance.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems of the prior art and it is an object of the present invention to provide a traveling distance calculating apparatus capable of calculating a traveling distance more accurately by minimizing a difference between a remaining amount of fuel displayed on a fuel gauge and a remaining amount of fuel based on fuel consumption of the engine And a method for calculating the distance traveled by the vehicle.

According to an aspect of the present invention, there is provided a method for calculating a travelable distance fuel amount of a travelable distance calculation device, comprising: confirming whether a fuel remaining amount of the fuel gauge satisfies an overcurrent mode entry condition; Calculating an amount of travelable distance fuel by using an arithmetic expression determined according to whether or not the vehicle is lubrication; calculating an amount of travelable distance fuel And confirming whether or not the remaining amount of fuel satisfies the overcurrent mode release condition.

In the step of confirming whether or not the entry into the overcurrent mode entry condition is satisfied, it is checked whether the remaining fuel amount is equal to or greater than a fuel amount obtained by subtracting 1 liter from the full load amount.

Further, in the calculating of the travelable distance fuel amount, the travelable distance fuel amount is calculated by adding 2 liters to the full charge amount when the vehicle is in lubrication.

In the calculating of the distance travelable fuel amount, the travelable distance fuel amount is calculated by subtracting one-half of the fuel consumption amount from the previous travelable distance fuel amount when the vehicle is traveling or stopping.

In the step of confirming whether or not the overcurrent mode release condition is satisfied, it is determined whether the remaining fuel amount is less than a fuel amount less than 3 liters from the full charge amount.

According to another aspect of the present invention, there is provided an apparatus for calculating a travelable distance, comprising: a fuel gauge for sensing a remaining amount of fuel in a fuel tank; an engine control device for calculating and transmitting fuel consumption of the engine; And an arithmetic unit operable to calculate a travelable distance fuel amount using an arithmetic expression determined according to whether the vehicle is lubri- cated or not and to calculate a travelable distance using the calculated travelable distance fuel amount .

The operation unit is characterized in that when the remaining fuel amount is equal to or more than the amount of fuel less than one liter in the full charge amount, the operation enters the full charge mode.

Further, the calculation unit may calculate the travelable distance fuel amount by adding 2 liters to the full charge amount when the vehicle is in lubrication in the overcurrent mode.

The calculation unit may calculate the travelable distance fuel amount by subtracting one-half of the fuel consumption amount from the previous travelable distance fuel amount when the vehicle is traveling or stopping.

In addition, the calculation unit releases the overcurrent mode and enters the normal mode when the remaining fuel amount is less than the fuel amount less than 3 liters from the full charge amount.

The present invention minimizes the difference between the fuel remaining amount displayed on the fuel gauge and the fuel amount based on the fuel consumption of the engine by estimating the travelable distance fuel amount for calculating the travelable distance in an overfill state, .

1 is a block diagram showing a travelable distance calculation device according to an embodiment of the present invention;
FIG. 2A and FIG. 2B are flow charts illustrating a method of calculating the travelable distance fuel amount of the travelable distance calculation device according to an embodiment of the present invention.
3 is a graph showing an error between the fuel gauge fuel amount and the DTE fuel amount according to the present invention.

The terms "comprises", "comprising", "having", and the like are used herein to mean that a component can be implanted unless otherwise specifically stated, Quot; element ".

Also, the terms " part, "" module, " and" module ", as used herein, refer to a unit that processes at least one function or operation and may be implemented as hardware or software or a combination of hardware and software . It is also to be understood that the articles "a", "an", "an" and "the" Can be used.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing a travelable distance computing device according to an embodiment of the present invention.

1, the travelable distance calculation device includes a fuel gauge 10, an engine control device 20, an operation unit 30, and a display unit 40. [

The fuel gauge 10 is mounted on the instrument panel and indicates the amount of fuel remaining in the fuel tank. At this time, the fuel gauge 10 indicates the amount of fuel in the fuel tank detected by the fuel sender. The fuel gauge 10 can divide the fuel level into an overfill section, a normal section, and a low fuel section.

The engine control device 20 calculates the fuel consumption amount of the engine at regular intervals and transmits the fuel consumption signal (Fuel Consumption Output, FCO) through the vehicle network. Here, the vehicle network can be implemented as a CAN (Controller Area Network).

The calculating unit 30 calculates a distance-to-empty (DTE) fuel amount using the fuel remaining amount transmitted from the fuel gauge 10 and the fuel consumption amount transmitted from the engine control device 20. [

The operation unit 30 differently divides the overfill mode and the normal mode according to the remaining amount of fuel detected through the fuel gauge 10 and applies the DTE fuel amount calculation formula differently.

The calculating unit 30 enters the overcurrent mode when the fuel remaining amount of the fuel gauge 10 is full or when the fuel amount is less than 1 liter (L) from the fuel amount (hereinafter, the full charge amount). Then, when the remaining fuel amount of the fuel gauge 10 is reduced to the full charge amount of -3 liters, the operation unit 30 releases the full charge mode and enters the normal mode.

The calculating unit 30 calculates the DTE fuel amount using Equation (1) when the vehicle is in lubrication by dividing the mode into the lubrication mode (lubrication) and the driving mode (driving or stopping) in the overcurrent mode.

Figure 112014099127445-pat00001

Here, the full load amount means the maximum fuel amount (Fuel Gauge Sender Full, S / F fuel amount) that can be expressed by the fuel gauge 10.

On the other hand, the arithmetic unit 30 calculates the DTE fuel amount using Equation (2) when the vehicle is running or standing still.

Figure 112014099127445-pat00002

At this time, the calculation unit 30 uses only 50% of the fuel consumption amount supplied from the engine control device 20 for calculating the DTE fuel amount.

As described above, the calculating unit 30 calculates the DTE fuel amount using the equations (1) and (2) in the overfeeding period in which the fuel gauge 10 can not sense the fuel amount.

The calculating unit 30 enters the normal mode when the remaining fuel amount of the fuel gauge 10 at the time of lubrication of the vehicle exceeds the full charge amount -L and is equal to or more than the minimum fuel level (empty level) -1L which can be indicated by the fuel gauge 10. In this case, the calculating unit 30 uses the remaining amount of fuel output from the fuel gauge 10 as the DTE fuel amount.

On the other hand, when the remaining amount of fuel during running of the vehicle in the overcurrent mode is smaller than the full charge amount (S / F fuel amount) -3L, the calculation unit 30 enters the normal mode. Further, when the remaining fuel amount of the vehicle falls below the low fuel warning (LFW) fuel amount of the fuel gauge 10 + 1L in the normal mode, the calculating unit 30 enters the fuel shortage mode.

The calculating unit 30 calculates the DTE fuel amount using the following equation (3) when the vehicle is traveling in the normal mode.

Figure 112014099127445-pat00003

That is, the calculation unit 30 calculates the DTE fuel amount by subtracting the fuel consumption amount from the previously obtained DTE fuel amount and adding the DTE corrected fuel amount. However, the DTE corrected fuel amount is reflected in the DTE fuel correction period (for example, 2.4s), and the correction amount is different according to the comparison result between the DTE fuel amount and the fuel remaining amount of the fuel gauge 10 as shown in [Table 1].

Condition DTE calibration fuel amount DTE fuel amount> Fuel level -1 / 512L DTE fuel amount = Fuel level 0L DTE fuel amount <Fuel level + 1 / 512L

On the other hand, when the vehicle is stopped in the normal mode, the calculating unit 30 calculates the DTE fuel amount by subtracting the fuel consumption amount from the previously obtained DTE fuel amount as in Equation (4).

Figure 112014099127445-pat00004

The calculation unit 30 calculates the travelable distance using the DTE fuel amount. The travelable distance calculation is performed using a known calculation formula.

The operation unit 30 may be implemented by a microprocessor, a microcontroller, or the like.

The display unit 40 displays information such as a travelable distance, a fuel shortage warning, and a remaining fuel amount output from the calculation unit 30. [ The display unit 40 may be a liquid crystal display (LCD), a thin film transistor-liquid crystal display (TFT LCD), an organic light-emitting diode (OLED), a flexible display ), A three-dimensional display (3D display), a transparent display, a head-up display (HUD), and a touch screen.

FIG. 2A and FIG. 2B are flowcharts illustrating a method of calculating the distance travelable fuel amount of the travelable distance computing device according to an embodiment of the present invention.

First, the calculation unit 30 confirms whether the remaining fuel amount of the fuel gauge 10 satisfies the overcurrent mode entry condition (S11). Here, the calculating unit 30 detects the present remaining amount of fuel through the fuel gauge 10, and enters the overcurrent mode when the remaining amount of fuel is equal to or larger than -1 L.

When the operation unit 30 enters the overcurrent mode, it confirms whether the vehicle is in lubrication (lubrication mode) (S13).

The arithmetic operation unit 30 calculates the DTE fuel amount using Equation (1) if the engine is lubrication in the overcurrent mode (S15). In other words, the calculation unit 30 calculates the DTE fuel amount by adding 2L to the full fuel amount (full charge amount) which is the fuel amount when the fuel level of the fuel gauge 10 is "F ". At this time, the calculation unit 30 calculates the travelable distance using the DTE fuel amount and outputs it to the display unit 40.

The calculation unit 30 confirms whether or not the overcurrent mode cancellation condition is satisfied after calculating the DTE fuel amount (S17). That is, the calculation unit 30 confirms whether the remaining fuel amount is less than the full charge amount -3L.

On the other hand, the calculation unit 30 calculates the DTE fuel amount using 50% of the fuel consumption amount supplied from the engine control device 20 (S14, S16) if the vehicle is traveling or stopped in the overcurrent mode. That is, the calculation unit 30 calculates a value obtained by subtracting 50% of the fuel consumption amount from the previous DTE fuel amount by the DTE fuel amount (see Equation 2).

The operation unit 30 enters the normal mode when the overcurrent mode release condition is satisfied in the step S17 (S19). For example, when the remaining fuel amount is less than -3 L, the operation unit 30 switches from the overcurrent mode to the normal mode.

When the fuel level enters the normal mode, the calculation unit 30 checks whether the fuel is being supplied (S21).

The calculating unit 30 uses the fuel gauge FG fuel amount as the DTE fuel amount when the vehicle is in lubrication (S23).

Thereafter, the operation unit 30 confirms whether the fuel remaining amount of the vehicle satisfies the entry condition of the low fuel level mode (Low Level Mode) (S25). In other words, the operation unit 30 confirms whether the remaining fuel amount is less than the LFW fuel amount + 1L.

When the remaining fuel amount falls below the LFW fuel amount + 1L, the calculating unit 30 enters the fuel shortage mode and outputs a fuel shortage warning (S27, S29). For example, when the arithmetic unit 30 enters the fuel shortage mode, the fuel shortage warning lamp is turned on.

On the other hand, when the vehicle is running in the normal mode, the arithmetic unit 30 calculates the DTE fuel amount using the fuel consumption amount transmitted from the engine control device 20, the previously obtained DTE fuel amount, and the DTE corrected fuel amount (S22, S24). The calculating unit 30 calculates the DTE fuel amount by adding the DTE corrected fuel amount to the previously obtained DTE fuel amount by subtracting the fuel consumption amount as shown in the following equation (3). At this time, the operation unit 30 uses 100% of the fuel consumption amount for calculation, and the DTE corrected fuel amount is used for calculation only for the DTE fuel correction period and follows 3L per hour.

If the vehicle is in the normal mode, the calculating unit 30 calculates the DTE fuel amount by subtracting the fuel consumption amount from the DTE fuel amount (S26).

3 is a graph showing an error between the fuel gauge fuel amount and the DTE fuel amount according to the present invention.

As shown in FIG. 3, an error of up to 15 liters occurred between fuel gauge (FG) fuel amount and DTE fuel amount in the related art, but the present invention reduced the error between the FG fuel amount and the DTE fuel amount to 5.5 liters.

As described above, the present invention can reduce the error between the FG fuel amount and the DTE fuel amount by calculating the DTE fuel amount using only a specific amount (1/2) of the fuel consumption amount in the fuel gauge full or longer period in which the fuel amount can not be detected It is possible to provide the driver with a more accurate travelable distance.

The embodiments described above are those in which the elements and features of the present invention are combined in a predetermined form. Each component or feature shall be considered optional unless otherwise expressly stated. Each component or feature may be implemented in a form that is not combined with other components or features. It is also possible to construct embodiments of the present invention by combining some of the elements and / or features. The order of the operations described in the embodiments of the present invention may be changed. Some configurations or features of certain embodiments may be included in other embodiments, or may be replaced with corresponding configurations or features of other embodiments. It is clear that the claims that are not expressly cited in the claims may be combined to form an embodiment or be included in a new claim by an amendment after the application.

Embodiments in accordance with the present invention may be implemented by various means, for example, hardware, firmware, software, or a combination thereof. In the case of hardware implementation, an embodiment of the present invention may include one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs) field programmable gate arrays, processors, controllers, microcontrollers, microprocessors, and the like.

In the case of an implementation by firmware or software, an embodiment of the present invention may be implemented in the form of a module, a procedure, a function, or the like which performs the functions or operations described above. The software code can be stored in a memory unit and driven by the processor. The memory unit is located inside or outside the processor, and can exchange data with the processor by various known means.

It will be apparent to those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit of the invention. Accordingly, the foregoing detailed description is to be considered in all respects illustrative and not restrictive. The scope of the present invention should be determined by rational interpretation of the appended claims, and all changes within the scope of equivalents of the present invention are included in the scope of the present invention.

10: Fuel Gauge
20: Engine control device
30:
40:

Claims (10)

Confirming whether the fuel remaining amount of the fuel gauge satisfies the overcurrent mode entry condition,
Determining whether the vehicle is refueling when entering the overcurrent mode entry condition;
Calculating a travelable distance fuel amount using a predetermined calculation formula according to whether the vehicle is lubrication,
And checking whether the remaining fuel amount satisfies the overcurrent mode release condition after calculating the travelable distance fuel amount,
Wherein the calculation of the travelable distance fuel amount computes the travelable distance fuel amount by subtracting half of the fuel consumption amount from the previous travelable distance fuel amount when the vehicle is traveling or stopping. Distance fuel amount calculation method. The method according to claim 1,
Wherein the step of confirming whether or not the access mode entry condition is satisfied,
Wherein the step of determining whether or not the remaining fuel amount is equal to or more than a fuel amount obtained by subtracting one liter from the full charge amount is performed. The method according to claim 1,
The calculating of the travelable distance fuel amount,
And calculating the travelable distance fuel amount by adding 2 liters to the full load amount when the vehicle is in lubrication. delete The method according to claim 1,
The step of confirming whether or not the overcurrent mode release condition is satisfied,
Wherein the step of determining whether or not the remaining fuel amount is less than a fuel amount less than 3 liters in full charge amount is performed. A fuel gauge for sensing the amount of fuel remaining in the fuel tank,
An engine control device for calculating and transmitting fuel consumption of the engine,
The fuel remaining amount satisfies the overcrowding mode entry condition and enters the overcurrent mode to calculate the travelable distance fuel amount by using an arithmetic expression determined according to whether the vehicle is being refueled and calculate the travelable distance by using the calculated travelable distance fuel amount And an arithmetic operation unit for arithmetic operation,
Wherein the arithmetic unit calculates the travelable distance fuel amount by subtracting one-half of the fuel consumption amount from the previous travelable distance fuel amount when the vehicle is traveling or stopping. The method according to claim 6,
The operation unit,
And when the remaining fuel amount is equal to or more than a fuel amount less than one liter in the full charge amount, enters the overflow mode. The method according to claim 6,
The operation unit,
And when the vehicle is in lubrication in the overcurrent mode, adds 2 liters to the full charge amount to calculate the travelable distance fuel amount. delete The method according to claim 6,
The operation unit,
And when the remaining fuel amount is less than the fuel amount less than 3 liters in the full charge amount, the overflow mode is released and the normal mode is entered.
KR1020140140771A 2014-10-17 2014-10-17 Apparatus and fuel calculation method for calculating distance to empty KR101583999B1 (en)

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012141144A (en) * 2010-12-28 2012-07-26 Kawasaki Heavy Ind Ltd Device and method for displaying possible travel distance

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012141144A (en) * 2010-12-28 2012-07-26 Kawasaki Heavy Ind Ltd Device and method for displaying possible travel distance

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