KR20060058243A - Gasoline fuel injection preventive device for diesel vehicle - Google Patents

Abstract

The present invention relates to a gasoline fuel injection injection device of a diesel vehicle, the HC detection sensor that can detect the HC gas remaining in the gasoline fuel gun is installed in the filler neck of the diesel vehicle, the inlet opening and closing at the end of the breather pipe By installing a solenoid valve for the valve, when the HC gas is detected through the HC detection sensor, the controller determines that the gasoline gas gun is inserted into the filler neck, so that the solenoid valve is closed, the breather pipe when the gasoline gas gun is inserted Induced pressure change in the fuel tank by blocking the inlet of the gas tank operation to stop automatically, thereby preventing the gasoline fuel injection of the gasoline fuel in the diesel vehicle can be prevented will be.

Diesel vehicles, gasoline fuels, anti-injection, filler necks, HC detection sensors, controllers, breather pipes, solenoid valves

Description

Gasoline fuel injection preventive device for diesel vehicle             

1 is an installation state of the mis-injection prevention apparatus according to the present invention,

Figure 2 is a block diagram showing the connection state of the HC detection sensor, the controller and each valve in the mis-injection apparatus according to the present invention.

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

1: Main case 10: Fuel tank

11: filler pipe 12: filler neck

13 breather pipe 14 HC detection sensor

15 controller 16 solenoid valve

20: gasoline storage 21: 2-way solenoid valve

22: connecting pipe 23: chamber

24: drain hose 25: cap

The present invention relates to a gasoline fuel injection injection device of a diesel vehicle, and more particularly, an HC detection sensor which can detect HC gas remaining in the gasoline fuel gun in a filler neck of a diesel vehicle, At the end, a solenoid valve for opening and closing the inlet is installed, and when the HC gas is detected through the HC detection sensor, the controller determines that the gasoline fuel gun is inserted into the filler neck and closes the solenoid valve so that the gasoline fuel of the diesel vehicle is configured to operate. It relates to a device for preventing misinjection.

In general, gasoline and diesel vehicles have to use the appropriate fuel for each engine, but inadvertently refuel the fuel due to the carelessness of the user. In particular, gasoline fuel having a relatively low ignition point is refueled to the diesel vehicle. The engine may be damaged when running.

The fuel gun size of the gasoline tanker differs according to the type of fuel, and the fuel gun size of the gasoline tanker is smaller than that of the diesel tanker. Fuel injecting into gasoline fuel is often occurring.

In particular, in the case of SUVs, which are rapidly increasing in sales to enjoy leisure time, vehicles with gasoline engines and diesel engines are produced in parallel in the same vehicle design, and vehicles with passenger diesel engines will be released in the future. Therefore, the appearance of the same vehicle, but the fuel used is expected to occur frequently.

For this reason, if the vehicle knowledge is insufficient, it is difficult to distinguish between a vehicle using gasoline or a diesel using only the design of the vehicle, and if a gas station who lacks common sense or experience with the vehicle only sees the exterior design of the vehicle, It is true that there is an urgent need for a method to prevent such fuel misinjection problem in recent years, because fuel misinjection of gasoline in gasoline can be easily performed.

Currently, to prevent fuel misfeeding, a number of techniques for mechanically filling a filler neck have been proposed so that only a large diameter diesel fuel can be supplied. Many of us are in a state of defenseless reality.

Therefore, the present invention is invented to solve the above problems, when the HC gas is detected through the HC detection sensor, the controller determines that the gasoline fuel gun is inserted into the filler neck to close the solenoid valve installed at the inlet of the breather pipe. By operating the gasoline fuel gun, when the gasoline fuel gun is inserted, the pressure change in the fuel tank is induced by blocking the inlet of the breather pipe so that the fuel tank operation is automatically stopped, thereby preventing the gasoline fuel from being misinjected into the diesel vehicle. It is an object of the present invention to provide a gasoline fuel misinjection preventing device of a diesel vehicle.

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

The gasoline fuel mis injection prevention device of the diesel vehicle according to the present invention,

An HC detection sensor installed at the filler neck in which the fuel gun is inserted in the diesel vehicle and configured to detect HC gas emitted from the gasoline fuel gun inserted therein;

A solenoid valve installed at an end of a breather pipe in a fuel tank to selectively open and close an inlet of the breather pipe;

A controller which receives the signal of the HC detection sensor and determines whether HC gas is detected and outputs a control signal for controlling opening and closing of the solenoid valve accordingly;

And the controller outputs a valve control signal for closing the inlet of the breather pipe when it is determined that the HC gas is detected from the signal of the HC detection sensor.

In particular, when the controller determines that HC gas is detected, the controller further includes a gasoline storage unit operable to separately store the gasoline injected through the filler pipe in the fuel tank by a control signal output, wherein the gasoline storage unit,

A chamber installed separately to store gasoline in the fuel tank;

A two-way solenoid valve installed at an end of the filler pipe and driven to be controlled by a control signal of the controller;                     

A discharge pipe installed in the fuel tank at one outlet of the two-way solenoid valve;

A connecting pipe connected to the chamber at the other outlet of the two-way solenoid valve;

Characterized in that comprises a.

In addition, the chamber is characterized in that the drain hose for discharging the gasoline stored therein to the outside of the fuel tank and the opening and closing cap of the drain hose.

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

1 is a block diagram showing the installation state of the mis-injection prevention apparatus according to the present invention, Figure 2 is a connection state of the HC detection sensor, the controller and each valve in the misinjection-preventing device according to the present invention.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for preventing gasoline fuel misinjection of a diesel vehicle. In particular, an HC detection sensor capable of detecting HC gas remaining in a gasoline fuel gun is installed in a filler neck of a diesel vehicle, and an inlet port is provided at the end of a breather pipe. By installing a solenoid valve for opening and closing, when HC gas is detected through the HC detection sensor, the controller determines that the gasoline gas gun is inserted into the filler neck and closes the solenoid valve so that a breather is inserted when the gasoline gas gun is inserted. The main focus is on the configuration to induce a pressure change in the fuel tank by blocking the inlet of the pipe to automatically stop the operation of the fuel gun.                     

As shown in FIG. 1, a conventional fuel tank 10 includes a filler pipe 11 in which fuel is injected, and a breather for releasing air and evaporated gas in the fuel tank 10 to the atmosphere during fuel injection. A pipe 13 is installed together, and the nominal capacity of the fuel in the fuel tank 10 is determined by the height at which the breather pipe 13 is installed.

The filler pipe 11 is connected to the filler neck 12 into which the fuel oil 1 is inserted.

In this configuration, when fuel is injected through the filler pipe 11 by inserting the main fuel 1 into the filler neck 12, the air and the boil-off gas in the fuel tank 10 flow through the filler pipe 13. Passing through (12), the gas exits to the atmosphere.

In addition, when fuel is injected into the fuel tank 10, the oil level in the fuel tank rises, and when the fuel is filled to the end of the breather pipe 13 to block the inlet of the breather pipe, air and evaporated gas are not released to the atmosphere. Therefore, the pressure in the fuel tank is increased in the end, and is detected by the pressure sensor (not shown) at the end of the main fuel 1, and then the fuel is automatically shut off so that fuel is not injected. .

On the other hand, gasoline contains HC gas, and also easily evaporates and emits HC gas, so that some amount of HC gas is released from the gasoline gas gun 1 by the remaining volatile fuel components even though fuel is not normally injected. do.

In particular, since gasoline is a highly volatile fuel, unlike gasoline gas guns, HC gas, which is capable of detecting a sensor, is always emitted from the gasoline gasoline gun by the remaining volatile fuel components.

The gasoline fuel injection injection device of the diesel vehicle according to the present invention focuses on the role of the breather pipe 13 and the fact that HC gas is released while the remaining fuel components from the gasoline fuel gun 1 are volatilized. It is configured to automatically stop the fuel tank by detecting HC gas from the fuel tank and detecting the insertion of gasoline fuel gun, and then blocking the inlet of the breather pipe 13 to generate a pressure change in the fuel tank 10. There is this.

First, in a diesel vehicle, in order to detect that the gasoline fuel gun 1 is inserted during fuel injection, the filler neck 12 into which the fuel gas is inserted is an HC detection sensor 14 capable of detecting HC gas emitted from the gasoline fuel gun. ) Is installed.

At this time, the HC detection sensor 14 is installed to detect the HC gas inside the filler neck 12 at the fuel oil (1) insertion position, that is, the position adjacent to the fuel oil inserted when the fuel oil is inserted.

The HC detection sensor is a widely used sensor in automobile testing, and at the present HC gas inspection, after leaving the vehicle in a closed space for a certain period of time, it collects the air around the vehicle to detect the HC gas as a detector having the HC detection sensor. The concentration is measured.

In addition, the erroneous injection preventing device of the present invention is installed at the end of the breather pipe 13, the solenoid valve 16 for selectively opening and closing the inlet of the breather pipe and the HC detection sensor 14 receives the signal of the HC And a controller 15 that determines whether or not gas is detected and generates and outputs a control signal for controlling the opening and closing operation of the solenoid valve 16 accordingly.

Here, when the controller 15 receives the signal from the HC detection sensor 14 and determines that HC gas is detected, the controller 15 generates and outputs a control signal for closing the inlet of the breather pipe 13, and the solenoid valve 16 ) Is closed by the control signal of the controller 15 outputted at the time of detecting HC gas to block the inlet of the breather pipe 13.

The controller 15 is connected to receive a signal from the HC detection sensor 14 installed in the filler neck 12, the solenoid valve 16 is opened and closed according to the control signal output from the controller 15 Circuitry to be made.

As a result, when the gasoline gas injection gun 1 is inserted into the filler neck 12 for fuel injection in the diesel vehicle provided with the erroneous injection preventing device of the present invention, the HC gas from the gasoline gas injection gun receives the HC detection sensor of the filler neck. When the controller 14 receives the HC gas detection signal from the HC detection sensor 14, the controller 15 outputs a control signal for closing the inlet of the breather pipe 13. And, according to this control signal, the solenoid valve 16 is closed to block the inlet of the breather pipe (13).

When the inlet port of the breather pipe 13 is closed in this way, a pressure change in the fuel tank 10 occurs, and the main fuel gun 1 is automatically stopped in the same manner as when a fuel exceeding the nominal capacity is injected.

On the other hand, in the application of the present invention, when the pressure change in the fuel tank (1) as described above, the fuel oil (1) should be stopped immediately, but when the pressure leaks to the filler pipe (11) it is to stop the gas gun There may be a slight delay.

Therefore, for the application of the present invention, the filler pipe 11 is preferably installed so that the outlet end is located below the height of the fuel residual amount in the fuel tank 1 so that pressure does not leak out.

In addition, it is desirable to minimize the space between the lubrication gun 1 and the filler neck 12 to prevent pressure from leaking into the filler neck.

In addition, as a preferred embodiment, it is to prepare for when a small amount of gasoline is introduced from the fuel gun (1) due to the delay of the refueling gun slightly delayed, the present invention is that the controller 15 is a gasoline fuel gun to the filler neck 12 And a gasoline storage unit 20 operable to separately store the gasoline injected from the gasoline fuel gun 1 in the fuel tank 10 by the control signal outputted when it is determined that 1 is inserted.

When the structure is described, a small chamber 16 capable of storing a small amount of gasoline is installed in the fuel tank 10, and the end of the filler pipe 11 is driven and controlled by a control signal of the controller 15. Two-way solenoid valve 21 is installed.

Here, a discharge pipe 11a is installed at one side of the two-way solenoid valve 21 to discharge fuel injected through the filler pipe 11 into the fuel tank 10 through the valve 21. The other outlet is provided with a connection pipe 22 connected to the gasoline storage chamber 23.

In addition, a drain hose 24 for discharging gasoline stored therein to the outside of the fuel tank 10 is installed in the gasoline storage chamber 23, and an opening and closing cap 25 is provided at an outlet of the drain hose 24. In the case where the driver opens the cap 25, the driver can extract the gasoline filled in the gasoline storage chamber 23 through the drain hose 24.

As a result, when the controller 15 receives the HC gas detection signal from the HC detection sensor 14, the controller 15 determines that the gasoline gas supply gun 1 is inserted, and outputs a valve control signal for opening the outlet of the connection pipe 22. Then, the 2-way solenoid valve 21 is driven and controlled by the valve control signal output from the controller 15 to close the fuel supply line, that is, the discharge pipe 11a side discharge port and open the connection pipe 22 side discharge port. The gasoline from the gasoline gas gun 1 is stored into the chamber 23 through the connecting pipe 22 via the filler pipe 11 and the two-way solenoid valve 21.

At this time, the chamber 23 can be implemented as a small chamber because the gasoline stored is a small amount of gasoline injected as a delay of pressure transmission.

In addition, although not shown in the drawings, a sensor means for detecting the filling of a certain amount of gasoline in the chamber 23 is provided, a warning lamp is installed in a position easily visible to the driver, and the controller by the signal of the sensor means When 15 determines that a predetermined amount or more of gasoline is filled in the chamber 23, a configuration for lighting the warning light may be additionally installed. In this case, the driver confirms that the warning light is turned on, and the cap 25 of the drain hose 24 may be installed. To open gasoline.

 As described above, according to the gasoline fuel injection injection device of the diesel vehicle according to the present invention, when the HC gas from the gasoline fuel gun is detected through the HC detection sensor, the controller determines that the gasoline fuel gun is inserted into the filler neck By closing the solenoid valve installed at the inlet of the breather pipe, the operation of the gas gun is automatically stopped, thereby preventing the gasoline fuel from being misinjected into the diesel vehicle.

Claims (3)

An HC detection sensor installed at the filler neck in which the fuel gun is inserted in the diesel vehicle and configured to detect HC gas emitted from the gasoline fuel gun inserted therein; A solenoid valve installed at an end of a breather pipe in a fuel tank to selectively open and close an inlet of the breather pipe; A controller which receives the signal of the HC detection sensor and determines whether HC gas is detected and outputs a control signal for controlling opening and closing of the solenoid valve accordingly; And the controller outputs a valve control signal for closing the inlet of the breather pipe when the controller determines that HC gas is detected from the signal of the HC detection sensor. . The method according to claim 1, The controller further includes a gasoline storage unit operable to separately store the gasoline injected through the filler pipe in the fuel tank by the control signal output when the HC gas is detected, the gasoline storage unit, A chamber installed separately to store gasoline in the fuel tank; A two-way solenoid valve installed at an end of the filler pipe and driven by a control signal of the controller; A discharge pipe installed in the fuel tank at one outlet of the two-way solenoid valve; A connecting pipe connected to the chamber at the other outlet of the two-way solenoid valve; Gasoline fuel mis-injection prevention device of a diesel vehicle comprising a. The method according to claim 2, The chamber is provided with a drain hose for discharging gasoline stored therein outside the fuel tank and a cap for opening and closing the drain hose, characterized in that the gasoline fuel injection of a diesel vehicle.

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