KR20110055797A - Apparatus for displaying fuel level and method thereof - Google Patents

Abstract

PURPOSE: A fuel amount display device and method which correct a fuel amount indication declination in real time are provided to accurately display the remainder fuel amount of a fuel tank by correcting the fuel amount indication declination in rear time according to the tilting degree of the running vehicle. CONSTITUTION: A fuel amount measurement part(100) measures the remainder fuel amount of a fuel tank. A fuel consumption output unit(110) produces the fuel consumption by using an injection signal. A vehicle gradient detector(120) senses the level of a vehicle on the ground. A driving part(140) operates a needle of a fuel gauge according to the drive control signal output from a correction part.

Description

Fuel level display device and its method {APPARATUS FOR DISPLAYING FUEL LEVEL AND METHOD THEREOF}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fuel gauge system of a vehicle, and more particularly, to a fuel amount display device and a method for correcting a fuel amount display deviation according to a slope of a driving vehicle in real time.

The fuel used to generate the power of the vehicle is stored in the fuel tank of the vehicle as is well known, and a fuel amount measuring device is used as a general means for delivering the fuel amount to the vehicle driver.

An example of a generalized fuel amount measuring device is shown in FIG. 1. As shown in FIG. 1, the fuel amount measuring device is connected to an upper portion of the fuel tank 1 and is provided with a resistance body part 2 having a ceramic resistor attached to one side thereof, and one end thereof hinged to the resistance body part 2. Float arm 50 coupled to rotate and read the variable resistance value of the ceramic resistance of the resistor body portion 2, and is provided on one end of the float arm 50 and floating on the fuel inside the fuel tank 10 It consists of a float 60 whose height changes with a change in oil level.

In the fuel amount measuring device, when the amount of fuel in the fuel tank is small, the float 60 is positioned low. As a result, a low resistance value is output from the ceramic resistance of the resistor body 2, and when the amount of fuel is relatively high, the float ( As 60 is positioned high, a high resistance value is output from the ceramic resistance of the resistance body 2. The controller drives the fuel gauge in accordance with the output resistance value, and as a result, the vehicle driver recognizes the amount of fuel in the fuel tank.

However, when the vehicle travels on the slope, the fuel amount measuring device as described above does not display the exact fuel amount. This is because the fuel in the fuel tank also flows together according to the tilting phenomenon of the vehicle when the vehicle is traveling on the slope, so that the fuel is measured at a level smaller than the actual amount of fuel and displayed on the fuel gauge. This is a general phenomenon that can occur not only on ramps but also on curved road conditions.

Accordingly, an object of the present invention is to provide a fuel amount display device and a method capable of displaying an accurate fuel amount by correcting a fuel amount display deviation according to a slope of a driving vehicle in real time.

Furthermore, another object of the present invention is to adjust the fuel amount display deviation according to the inclination of the running vehicle in real time, the fuel amount display device that can display the remaining fuel amount quickly and accurately by selecting the optimal correction value according to the inclination of the running vehicle And it provides a method.

The fuel amount display device according to an embodiment of the present invention for solving the above problems,

A fuel amount measuring unit for measuring a residual fuel amount in the fuel tank;

A fuel consumption calculation unit for calculating a fuel consumption amount using the injection signal;

A vehicle tilt detection unit for detecting a tilt of the vehicle relative to the plane;

A correction unit for reading the remaining fuel amount, fuel consumption amount, and vehicle inclination value in the fuel tank and correcting the fuel amount display deviation according to the vehicle inclination in real time;

And a driving unit for driving the fuel gauge guideline according to the driving control signal output from the correction unit.

The correction unit may further include a memory in which correction constants having different values according to the vehicle tilt value are stored.

Fuel amount display method according to another embodiment of the present invention,

Detecting a vehicle tilt value from a sensor capable of measuring a vehicle tilt;

And a fuel amount display step of correcting and displaying the fuel amount display deviation in real time according to the detected vehicle tilt value.

And the fuel amount display step is characterized in that the fuel consumption amount is corrected by a correction constant having a different value according to the vehicle inclination value, and the current fuel amount is displayed by subtracting the corrected value from the previous fuel amount display value.

According to the embodiments of the present invention as described above, the fuel amount display deviation can be corrected in real time according to the inclination of the driving vehicle on a curved road or a slope, so that it is possible to accurately display the remaining fuel amount in the fuel tank quickly. have.

Furthermore, since the embodiments of the present invention use constants for correcting the fuel amount display deviation, not constant values, but constants depending on the inclination of the vehicle, the fuel amount can be displayed sensitively in response to external changes of the vehicle.

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

2 is a block diagram of a fuel amount display device according to an exemplary embodiment of the present invention.

Referring to FIG. 2, the illustrated fuel amount measuring unit 100 is an apparatus having the configuration as shown in FIG. 1 as an example, and measures the remaining fuel amount in the fuel tank and provides the value to the correction unit 130.

The engine unit generates an injection signal for knowing the fuel consumption amount and provides the fuel consumption amount to the fuel consumption calculation unit 110, which will be described later. The fuel consumption calculation unit 110 calculates the fuel consumption amount using the input injection signal and stores the value. Provided to the government (130).

The vehicle tilt detection unit 120 detects an inclination of the vehicle relative to the plane and provides the correction unit 130. The vehicle tilt detection unit 120 may use an inclination sensor or a gyro sensor that is already commercialized, and the exemplary sensors detect the inclination of the horizontal direction (X axis) and the vertical direction (Y axis) and store the digital data. Provided by processing.

The correction unit 130 may calculate the residual fuel amount in the fuel tank provided from the fuel amount measuring unit 100, the fuel consumption amount provided from the fuel consumption calculation unit 110, and the vehicle inclination value provided from the vehicle tilt detection unit 120, respectively. And corrects the fuel amount display deviation according to the vehicle tilt. In the real-time correction method, the fuel consumption amount is corrected by the correction constant having different values according to the vehicle inclination value, and the corrected value is subtracted from the previous fuel amount display value. To this end, the correction unit 130 includes a memory in which correction constants having different values are stored according to a vehicle inclination value. In addition, the correction method will be described in more detail with reference to FIG. 3. For reference, the correction unit 130 may determine whether the driving mode is based on a value provided from the vehicle speed sensor that provides the vehicle speed of the current vehicle.

Finally, the driving unit 140 illustrated in FIG. 2 serves to drive the guide of the fuel gauge 150 according to the driving control signal output from the corrector 130.

A fuel amount display method which can be executed in the fuel amount display device having the above-described configuration will be described in detail with reference to FIG. 3.

First, the correction unit 130 determines whether the driving mode of the vehicle using the signal provided from the vehicle speed sensor (step S10). When the driving mode is recognized, the correction unit 130 detects the fuel amount and the fuel consumption in the fuel tank in real time through the fuel amount measuring unit 100 and the fuel consumption calculating unit 110. In addition, the correction unit 130 detects the tilt of the vehicle in real time through the vehicle tilt detection unit 120 (step S12).

The correction unit 130 that detects the fuel amount, fuel consumption, and vehicle tilt in the fuel tank in real time corrects the fuel amount display deviation in real time by a correction constant having different values according to the vehicle tilt in step S14. In the correction method, the fuel consumption is first corrected by a correction constant having a different value according to the vehicle inclination value, and the current fuel amount is displayed by subtracting the corrected value from the previous fuel amount display value. If this is described in more detail based on the following formula,

L2 (t) = L2 (t-1) -K * D

First, L2 (t) represents the fuel gauge guide position of the instrument panel while driving, D represents fuel consumption injected from the injector, and K represents a constant for correcting fuel consumption. The correction constant K is a value that varies depending on the inclination of the vehicle. The correction constant K is a value that varies according to the X and Y axis inclinations. In the above equation, it is assumed that t represents a time for displaying the fuel gauge.

Y1 Y2 Y3 … Yn X1 Ka Ke Ki … Kn X2 Kb Kf Kj … Ko X3 Kc Kg Kk … Kp … … … … … … Xn Kd Kh Km … Kq

When the fuel amount display deviation is corrected in real time according to the method described above, the correction unit 130 displays the fuel gauge by controlling the driving unit 140 to display the fuel gauge according to the corrected value (step S16). do. In step S18, it is determined whether the engine is turned off. If not, the fuel gauge is displayed in real time while the process returns to step S12, and the above steps S12 to S18 are repeated.

In summary, the present invention is a constant variable in accordance with the inclination of the vehicle in real time correction of the fuel amount display deviation, the constant K for correcting the fuel amount display deviation is variable according to the vehicle inclination rather than a fixed value as shown in the above table By using them, it is possible to display the exact amount of fuel in response to external changes of the vehicle.

Although the present invention has been described with reference to one embodiment shown in the accompanying drawings, this is only an example, and those skilled in the art may realize various modifications and equivalent other embodiments therefrom. I can understand. Therefore, the true technical protection scope of the present invention should be defined only by the appended claims.

1 is a schematic view for explaining the principle of operation of the fuel amount measuring apparatus for a vehicle in general.

2 is a block diagram of a fuel amount display device according to an embodiment of the present invention;

3 is an exemplary fuel flow display flow according to an embodiment of the present invention.

Claims (5)

In the fuel amount display method of the vehicle, Detecting a vehicle tilt value from a sensor capable of measuring a vehicle tilt; And a fuel amount display step of correcting and displaying the fuel amount display deviation in real time according to the detected vehicle inclination value. The method according to claim 1, wherein the fuel amount display step, And a fuel consumption amount is corrected by a correction constant having a different value according to a vehicle inclination value, and the current fuel amount is displayed by subtracting the corrected value from a previous fuel amount display value. In the fuel amount display method of the vehicle, Detecting fuel amount and fuel consumption in the fuel tank in real time; Detecting the vehicle tilt value from a sensor capable of measuring the vehicle tilt in real time; And correcting the fuel consumption amount using a correction constant having a different value according to a vehicle inclination value, and subtracting the corrected value from a previous fuel amount display value to display a current fuel amount. In the fuel amount display device of the vehicle, A fuel amount measuring unit for measuring a residual fuel amount in the fuel tank; A fuel consumption calculation unit for calculating a fuel consumption amount using the injection signal; A vehicle tilt detection unit for detecting a tilt of the vehicle relative to the plane; A correction unit for reading the remaining fuel amount, fuel consumption amount, and vehicle inclination value in the fuel tank and correcting the fuel amount display deviation according to the vehicle inclination in real time; And a driving unit for driving the guide of the fuel gauge according to the driving control signal output from the correcting unit. The fuel amount display apparatus of claim 4, wherein the correction unit comprises a memory in which correction constants having different values are stored according to a vehicle inclination value.

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