KR20030016571A - Apparatus for removing lpg tars for vehicles and method for the same - Google Patents

Abstract

PURPOSE: A removing device and method of LPG(Liquefied Petroleum Gas) tar are provided to secure the idle stability, to prevent the reduction of an output and not to require a tar removing lever by automatically removing the LPG tar through an ECU(Electronic Control Unit) of a vehicle. CONSTITUTION: A fuel tank(20) is installed in an LPG vehicle and stores LPG. An ECU calculates the fuel amount of the fuel tank. A fuel level sensor(40) transmits a fuel remaining signal inside the fuel tank to the ECU by installing in the fuel tank. An electronic solenoid valve(51) is opened and closed according to the control of the ECU by installing in a vaporizer(50) of the vehicle. Thereby, LPG tar is automatically removed by operating the electronic solenoid valve through the ECU.

Description

Apparatus and method for eliminating tar in tar of vehicle {APPARATUS FOR REMOVING LPG TARS FOR VEHICLES AND METHOD FOR THE SAME}

The present invention relates to a device for eliminating LPG tar in a vehicle and a method thereof, and more particularly, to improve idle quietness by automatically removing Elpita tar on a regular basis by an ECU of a vehicle. The present invention relates to a device for eliminating tar, and a method thereof.

As shown in FIG. 1, in the conventional ELP tar removal, a tar removal lever 10, which is attached to a vaporizer, needs to be opened by a person by hand and then closed again. However, when the tar removal lever 10 is opened, fuel leaks, which causes a problem during driving.

In addition, when the vehicle traveling distance is about 5,000km, in general, the tar removal lever 10 should be operated to remove the lpg tar.

As such, the driver may open the engine hood every 5,000 km and open and close the tar removal lever 10 of the vaporizer manually by hand.

If tar is not removed on a regular basis, start-up delay, idle assistance, and output drop may occur.

In addition, there is a problem that the tar removal lever 10 is released in the state inadvertently factory workers.

The present invention was created in order to solve the above problems, by ensuring the elimination of the tar automatically by the ECU of the vehicle regularly to ensure the quietness of the child, to prevent the degradation of the output, and to eliminate the tar removal lever It is an object of the present invention to provide an apparatus and a method for eliminating the tar paper tar of a vehicle.

1 is a view schematically showing a part of the structure of the conventional lpg tar removal apparatus of a vehicle according to the prior art.

Figure 2 is a schematic view showing an apparatus for eliminating the L-PJI tar of the vehicle according to the present invention.

Figure 3 is a schematic flow chart showing sequentially the method of removing the L-Pig tar of the vehicle according to the present invention.

<Description of the symbols for the main parts of the drawings>

20. Fuel Tank

30. ECU

40. Fuel Level Sender

50. Vaporizer

51. Electronic Solenoid Valve

In order to achieve the above object, an apparatus for eliminating LLP tar in a vehicle of the present invention comprises: a fuel tank installed in an LLP vehicle using LLP fuel as a fuel and having the LLP stored therein; An ECU for calculating a fuel amount of the fuel tank; A fuel level sender installed in the fuel tank to transmit a fuel residual signal in the fuel tank to the ECU; And an electronic solenoid valve installed at a vaporizer of the vehicle and opened and closed under the control of the ECU.

In order to achieve the above object, the method of eliminating tar of tar of the present invention comprises the steps of: (a) setting an initial value of 0 liter (l) of total fuel consumption and unit consumption; (b) determining whether the ignition key is on or not; (c) if the ignition key is on in step (b), determining whether an engine is started; (d) when the engine is started in step (c), the ECU of the vehicle receiving a signal of a fuel level sender to calculate a fuel amount A in the fuel tank; (e) determining whether the ignition key is off and the engine is stopped; (f) the ECU calculating the fuel amount B in the fuel tank in response to the fuel level sender signal; (g) calculating a unit consumption fuel amount by subtracting the fuel amount A from the fuel amount B; (h) calculating a total consumed fuel amount by adding the unit consumed fuel amount and the total consumed fuel amount at the start-up time; (i) comparing and comparing the total amount of fuel consumed in the step (h) with a reference value; (j) if it is determined in step (h) that the total amount of fuel consumed is greater than the reference value, opening and closing the tar removing electronic solenoid valve for a predetermined time.

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

Figure 2 schematically shows an apparatus for removing Elpita tar of a vehicle according to the present invention. Here, the description of the configuration of the LLP tar removal device of the general vehicle will be omitted, and only the configuration according to the features of the present invention will be described.

Referring to the drawings, the vehicle's LLP tar removal apparatus according to the present invention is installed in an LPI vehicle that is fueled by LLP, a fuel tank 20 in which LLP is stored as fuel, and a fuel tank 20 installed in the vehicle. ECU 30 for calculating the fuel amount of fuel, fuel level sender 40 installed in the fuel tank 20 to transmit a fuel level signal in the fuel tank 20 to the ECU 30, and the vaporizer of the vehicle. It is configured to include an electronic solenoid valve 51 installed in the 50 to open and close under the control of the ECU (30).

Reference numeral 41 not described in FIG. 2 shows a buoy of the fuel level sender 40.

3 is a flowchart sequentially showing a method of removing the L-Pig tar of the vehicle according to the present invention.

Referring to FIGS. 2 and 3, in the method of removing the LLP tar of the vehicle according to the present invention, first, an initial value of the total fuel consumption and the unit consumption is set to 0 liter (l).

Then, it is determined whether the ignition key is on (step 120).

If the ignition key is on in step 120, it is determined whether the engine is running (step 130).

When the engine is started in step 130, the ECU 30 of the vehicle receives the signal of the fuel level sender 40 to calculate the fuel amount A in the fuel tank 20 (step 140).

It is then determined whether the ignition key is off and the engine has stopped (step 150).

In addition, the ECU 30 receives the signal of the fuel level sender 40 and calculates the fuel amount B in the fuel tank 20 (step 160).

The amount of fuel consumed is calculated by subtracting the fuel amount A from the fuel amount B (step 170).

Subsequently, the total amount of fuel consumed is calculated by adding the unit amount of fuel consumed and the total amount of fuel consumed at the start-up.

The total amount of fuel consumed in step 180 is compared with a threshold value (step 190).

If it is determined in step 190 that the total amount of fuel consumed is greater than the reference value, the tar removal electronic solenoid valve 51 is opened and closed for a predetermined time (step 200, 210).

On the other hand, in step 120, if it is determined that the ignition key is not on and the engine is not started, the flow is terminated.

In step 150, if it is determined that the ignition key is not off and the engine is not stopped, the step 140 is performed again.

In addition, if it is determined in step 190 that the total amount of fuel consumed is not greater than the reference value, the step 120 is to be performed again. The reference value is 700 liters (l).

In step 200, the tar removal electronic solenoid valve 51 is opened for 10 seconds.

The method of eliminating tar of the LPI of the vehicle according to the present invention having the configuration as described above includes an ECU 30 and an associated control logic for controlling the tar removing device including the electronic solenoid valve 51 of the vaporizer 50 of the ELP vehicle. It is about.

In more detail, tar removal is essential because the vaporizer 50 is increased according to the consumption of tar fuel generated while vaporizing the liquid LLP fuel.

Therefore, in the present invention, the ECU 30 calculates the amount of fuel consumed by the engine, and when the vaporizer 50 vaporizes a certain amount or more of the fuel, the ECU 30 is configured to open the electronic solenoid valve 51.

In addition, a fuel level signal mounted to the fuel tank 20 is transmitted to the instrument panel of the vehicle driver's seat. There is a fuel level sender 40 inside the fuel tank 20 to output a signal for the fuel remaining amount in the fuel tank 20 as a change in resistance value.

When the shape and size of the fuel tanks 20 mounted on all vehicles are determined, the resistance value output from the fuel level sender 40 is changed in proportion to the fuel residual amount according to the fuel residual amount.

And this is in the form of a buoy, and the output resistance value changes as the fuel level in the fuel tank 20 changes. The ECU 30 receives the output resistance value of the fuel level sender 40 so that the ECU 30 can know the current fuel amount in the fuel tank 20.

The fuel consumption at each run is calculated by comparing the remaining fuel at start-up with the remaining fuel after turning off the engine, and when the total fuel consumption reaches a threshold, the electronic solenoid valve mounted on the vaporizer 50 in the ECU 30 Open (51) to remove tar.

Tests have shown that tar removal is required for every 700 liters of LPG fuel used.

As described above, an apparatus for eliminating Elpita tar in a vehicle and a method thereof according to the present invention have the following effects.

In the conventional tar removal process, the tar removal lever provided in the vaporizer was opened by a person by hand, and then, the work had to be closed. Eliminating tar eliminates the need for tar removal at regular intervals. This eliminates the need for regular maintenance by the driver.

In addition, ELP fuel tar removal can be automatically performed on a regular basis by the ECU, thereby ensuring idleness and contributing to improved fuel efficiency and performance.

Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent embodiments are possible. Therefore, the true scope of protection of the present invention should be defined only by the appended claims.

Claims (7)

A fuel tank installed in an LPI vehicle that uses LPI as fuel, and stores the LPI therein; An ECU for calculating a fuel amount of the fuel tank; A fuel level sender installed in the fuel tank to transmit a fuel residual signal in the fuel tank to the ECU; And an electronic solenoid valve installed on the vaporizer of the vehicle and opened and closed under the control of the ECU. (a) setting the initial value of the total fuel consumption and the unit consumption to 0 liter (l); (b) determining whether the ignition key is on or not; (c) if the ignition key is on in step (b), determining whether an engine is started; (d) when the engine is started in step (c), the ECU of the vehicle receiving a signal of a fuel level sender to calculate a fuel amount A in the fuel tank; (e) determining whether the ignition key is off and the engine is stopped; (f) the ECU calculating the fuel amount B in the fuel tank in response to the fuel level sender signal; (g) calculating a unit consumption fuel amount by subtracting the fuel amount A from the fuel amount B; (h) calculating a total consumed fuel amount by adding the unit consumed fuel amount and the total consumed fuel amount at the start-up time; (i) comparing and comparing the total amount of fuel consumed in the step (h) with a reference value; (j) if it is determined in step (h) that the total amount of fuel consumed is greater than the reference value, opening and closing the tar removing electronic solenoid valve for a predetermined time. The method of claim 2, wherein in step (b), And if it is determined that the ignition key is not on and the engine is not started, the flow is terminated. The method of claim 1, wherein in step (e), And if it is determined that the ignition key is not off and the engine is not stopped, the step (d) is performed again. The method of claim 1, wherein in step (i), If it is determined that the total amount of fuel consumed is not greater than the reference value, the step of removing the lpg tar of the vehicle, characterized in that to perform the step (b) again. The method of claim 1, wherein in step (i), The reference value is 700 liter (l), characterized in that the tar removal process of the vehicle. The method of claim 1, wherein in step (j), And removing the tar removing electronic solenoid valve for 10 seconds.