KR20040023061A - Apparatus for preventing hardening by heat of fuel high-pressure hose in a vehicle - Google Patents

Abstract

PURPOSE: A thermo-hardening preventive device of a high pressure fuel hose is provided to prevent crack from thermo-hardening of the high pressure fuel hose and fuel leak by restricting inflow of heat to the high pressure fuel hose with flowing washing liquid through a washing liquid passage in increasing the surface temperature of the high pressure fuel hose and cooling with discharging external air. CONSTITUTION: A thermo-hardening preventive device of a high pressure fuel hose(26) comprises a temperature detecting sensor(36) detecting the surface temperature of the high pressure fuel hose; a washing liquid pump(22) pumping washing liquid from a washing liquid tank(20) in increasing the surface temperature of the high pressure fuel hose; a washing liquid inlet unit flowing washing liquid from the washing liquid tank to the high pressure fuel hose; a cooling unit connected to the washing liquid inlet unit and distributed in the outer periphery of the high pressure fuel hose to receive washing liquid from the washing liquid inlet unit; a washing liquid discharge hose(48) recovering washing liquid from the cooling unit to the washing liquid tank; a solenoid valve(52) regulating recovery of washing liquid through the washing liquid discharge hose; and a control unit operating the washing liquid pump and shutting the solenoid valve to restrict return of washing liquid in increasing the surface temperature of the high pressure fuel hose over the reference value, and recovering washing liquid by opening the solenoid valve in decreasing the surface temperature of the high pressure fuel hose.

Description

Apparatus for preventing hardening by heat of fuel high-pressure hose in a vehicle}

The present invention relates to a fuel high pressure hose heat curing prevention device of a vehicle, and more particularly, to a fuel high pressure hose heat curing prevention device of a vehicle for preventing thermal curing of a fuel high pressure hose that delivers fuel to an engine of a vehicle. It is about.

As is well known, the vehicle is capable of traveling by receiving fuel from the fuel supply system from the engine and combusting it, such a fuel supply system as shown in FIG. 1.

1 is a view schematically showing a fuel supply system of a general vehicle.

As shown in FIG. 1, a fuel supply system of a general vehicle includes a fuel tank 2, a fuel pump 4, a fuel filter 6, a fuel high pressure hose 8, a delivery pipe 10, and an injector 12. ) And a return hose 16.

The fuel supply system of the vehicle transfers the current from the battery to the fuel pump 4 when the engine starts, and the fuel pump 4 pumps the fuel from the fuel tank 2 to the fuel filter 6. .

The fuel filter 6 transfers the fuel transferred from the fuel tank 2 to the delivery pipe 10 through the fuel high pressure hose 8, and the fuel transferred to the delivery pipe 10 is an injector. A proper amount is injected into the engine 14 through 12.

Here, the remaining fuel injected by the injector 12 is returned to the fuel tank 2 through the return hose 16.

On the other hand, the fuel high pressure hose 8 is made of a material of epichlorohydrin rubber (ECO rubber) having excellent heat resistance because it is disposed around the engine 14 where high heat is generated.

However, even if the fuel supply hose of the fuel supply system is made of a material having excellent heat resistance, the fuel supply hose is exposed to high heat generated from the engine for a long time, so that the surface of the fuel hose hardens with heat, causing the possibility of cracking. There is a problem that if a crack occurs in the fuel high pressure hose as a main safety component for supplying fuel, there may be a serious safety problem.

Accordingly, the present invention has been made in view of the above-described conventional circumstances, and an object thereof is to allow the washer fluid to flow around the fuel high pressure hose constituting the fuel supply system of the vehicle, thereby providing a surface of the surface by applying high heat to the fuel high pressure hose. It is to provide a fuel high pressure hose thermal hardening device of a vehicle for preventing a crack.

Another object of the present invention is to provide an air passage in which external air flows into the outer circumferential surface of the fuel high pressure hose of the vehicle, thereby providing a fuel high pressure hose heat curing prevention device of the vehicle for preventing surface cracks due to high heat application of the fuel high pressure hose. It is.

1 is a view schematically showing a fuel supply system of a typical vehicle;

2 is a view showing a configuration for a fuel high pressure hose thermal hardening prevention apparatus of a vehicle according to an embodiment of the present invention,

3A and 3B are cross-sectional views illustrating a state in which a washer fluid passage is coupled to a fuel high pressure hose along a line A-A 'of FIG. 2;

Figure 4 is a block diagram showing the configuration of a control circuit applied to the fuel high pressure hose heat curing prevention apparatus according to the present invention,

5 is a view showing the configuration of the fuel high pressure hose thermal hardening apparatus for a vehicle according to another embodiment of the present invention.

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

20: washer liquid tank, 22: washer liquid pump,

24: washer fluid inlet hose, 26: fuel high pressure hose,

28: washer fluid dispenser, 30: washer fluid passage,

36: temperature sensor, 44: washer liquid dust collector,

48: Washer fluid discharge hose, 52: Solenoid valve.

According to an embodiment of the present invention for achieving the above object, in the fuel supply device of a vehicle having a fuel supply hose extending to supply fuel from a fuel tank to the injector of the engine, the surface of the fuel supply hose Washer fluid pump for pumping washer fluid stored in the washer fluid tank when the surface temperature of the temperature sensing means for sensing the temperature and the fuel supply hose sensed by the temperature sensing means rises above a certain temperature, and the washer fluid by the pumping operation of the washer fluid pump Washing liquid inlet means for receiving the washer liquid from the tank to be delivered to the fuel supply hose side, connected to the washer liquid inlet means and distributed over the entire area of the outer circumferential surface of the fuel supply hose, thereby cooling the washer liquid from the washer liquid inlet means Means for recovering the washer liquid introduced into the cooling means to the washer liquid tank. The washer fluid discharge means, the valve means for intermitting the recovery state of the washer fluid by the washer fluid discharge means, and when the surface temperature of the fuel supply hose detected by the temperature sensing means rises above a predetermined temperature, the washer fluid pump is operated. And closing the valve means to prevent washer fluid from being recovered, and when the surface temperature of the fuel supply hose is lowered, controlling the opening of the valve means to recover the washer fluid of the cooling means. Provided is a fuel high pressure hose thermal hardening device for a vehicle.

According to another embodiment of the present invention for achieving the above object, in a fuel supply device of a vehicle having a fuel supply hose extending for supplying fuel from a fuel tank to the injector of the engine, it is installed outside the vehicle An air inlet unit for receiving external air, an air inlet hose for delivering external air introduced from the air inlet unit to a fuel supply hose, and an air for distributing operation such that external air received from the air inlet hose is applied to the fuel supply hose. It is provided with a distributor and a discharge port for discharging the external air distributed by the air distributor to the entire surface area of the fuel supply hose provides a fuel high pressure hose heat curing prevention device of a vehicle.

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

That is, FIG. 2 is a diagram illustrating a configuration of a fuel high pressure hose thermosetting apparatus for a vehicle according to an exemplary embodiment of the present invention.

As shown in FIG. 2, the apparatus for preventing fuel high pressure heat curing according to an embodiment of the present invention includes a washer liquid tank 20, a washer liquid pump 22, a washer liquid inlet hose 24, and a fuel high pressure hose 26. , Washer fluid distributor 28, washer fluid passage 30, sealing clamps 32 and 50, locking members 34 and 46, temperature sensor 36, fixing clip 38, fixing bolt 40, body panel (42), washer liquid dust collector (44), washer liquid discharge hose (48), solenoid valve (52), and cap (54).

The washer liquid pump 22 pumps the washer liquid stored in the washer liquid tank 20 and delivers it to the washer liquid inlet hose 24. The washer liquid inlet hose 24 is a washer liquid distributor 28 by a sealing clamp 32. It is hermetically coupled to and delivers the washer fluid to the washer fluid passageway 30 formed from the washer fluid distributor 28.

The washer liquid distributor 28 is fixedly coupled to one end side of the fuel high pressure hose 26 by the locking member 34, and the washer liquid passage 30 extends from the washer liquid distributor 28 to extend the fuel high pressure hose. It extends to the other end of (26).

The temperature sensor 36 is installed at a predetermined surface side of the fuel supply hose 26 to sense a temperature of the surface of the fuel supply hose 26.

Here, the washer liquid inlet hose 24 is fixedly supported by a fixing clip 38, the portion extending from the washer liquid tank 20 is coupled to the vehicle body panel 42 by a fixing bolt 40.

On the other hand, the other end of the fuel supply hose 26 is provided with a washer liquid dust collector 44 which is fixedly coupled to the washer liquid discharge hose 48 by a sealing clamp 50, the washer liquid dust collector 44 is Locking member 46 is fixedly coupled to the other end of the fuel supply hose (26).

The washer fluid discharge hose 48 is extended to recover the washer fluid collected by the washer fluid dust collector 44 to the washer fluid tank 20, and the washer fluid discharge hose 48 is provided with a solenoid valve 52 interposed therebetween. have.

3A and 3B are cross-sectional views illustrating a state in which the washer fluid passage is coupled to the fuel high pressure hose along the AA ′ line of FIG. 2, wherein the washer fluid passage 30 is an outer circumferential surface of the cylindrical fuel high pressure hose 26. A plurality is vented to cover the whole, and the forming portion of each washer liquid passage 30 is made to be protected by the outer shell (54).

In addition, a hinge 56 is formed at one end of the formation portion of the washer liquid passage 30 so that the fuel high pressure hose 26 can be easily detached, and a clip 58 is formed at the other end of the washer liquid passage 30. The formation of the to allow the fuel supply hose 26 to be fixedly worn.

Next, Figure 4 is a block diagram showing the configuration of a control circuit applied to the fuel high pressure hose heat curing prevention apparatus according to the present invention.

As shown in FIG. 4, the control circuit includes an input interface 60 for digitally converting an analog temperature sensing signal from the temperature sensing sensor 36, and a temperature sensing value from the temperature sensing sensor 36. To the control unit 62 for controlling the supply of the washer fluid and to the output interface 64 for analog conversion of the digital control signal from the control unit 62 to the washer liquid pump 22 and the solenoid valve 52. It is composed.

If the surface temperature of the fuel high pressure hose 26 detected by the temperature sensor 36 is greater than or equal to a predetermined temperature, the controller 62 drives the washer fluid pump 22 to wash the washer fluid from the washer fluid tank 20. In addition to being delivered to the washer liquid passage 30, the solenoid valve 52 is closed to prevent the washer liquid from being recovered.

In addition, when the surface temperature of the fuel supply hose 26 sensed by the temperature sensor 36 drops below a predetermined temperature, the controller 62 opens the solenoid valve 52 to open the washer fluid passage 30. The washer liquid remaining in the washer is recovered to the washer liquid tank 20.

Next, an operation according to an embodiment of the present invention made as described above will be described in detail with reference to the accompanying drawings.

First, when the vehicle is started and the fuel from the fuel tank is delivered through the fuel supply hose 26 and an appropriate amount is injected through the injector of the engine, the temperature sensing unit installed on a predetermined surface of the fuel supply hose 26 is sensed. The sensor 36 detects the surface temperature of the fuel supply hose 26 and generates a temperature detection signal.

In this state, the controller 62 receives the temperature detection signal from the temperature sensor 36 through the input interface 60 and determines whether the temperature is increased. The surface temperature of the fuel supply hose 26 is determined. Is determined to be greater than or equal to a predetermined temperature, the drive control signal is output to the washer liquid pump 22 through the output interface 64 so that the washer liquid from the washer liquid tank 20 is pumped to the washer liquid inlet hose 24. do.

Meanwhile, the washer fluid delivered to the washer fluid inlet hose 24 is simultaneously introduced into a plurality of washer fluid passages 30 connected to the washer fluid distributor 28 to prevent high heat from being applied to the fuel high pressure hose 26 anymore. In addition, the hose surface is cooled.

At this time, the control unit 62 controls the solenoid valve 52 to prevent the washer liquid introduced into the washer liquid passage 30 from being recovered to the washer liquid tank 20 through the washer liquid discharge hose 48. The washer liquid pump 22 is stopped.

In this state, if it is determined that the surface temperature of the fuel high pressure hose 26 detected by the temperature sensor 36 has fallen below a predetermined temperature, the solenoid is output through the output interface 64. As the driving control signal is applied to the valve 52 to open the solenoid valve 52, the washer liquid collected in the washer liquid dust collector 44 connected to the washer liquid passage 30 passes through the washer liquid discharge hose 44. 20) to be recovered.

Next, another embodiment of the present invention will be described in detail with reference to the accompanying drawings.

That is, FIG. 5 is a diagram illustrating a configuration of an apparatus for preventing fuel high pressure heat curing of a vehicle according to another exemplary embodiment of the present invention.

As shown in FIG. 5, the apparatus for preventing fuel high pressure heat curing according to another embodiment of the present invention includes an air inlet 70, an air inlet hose 72, a fuel supply hose 74, and an air distributor 76. ), The discharge port 78, the locking member 80, the body panel 82, the fixing clip 84, the fixing bolt 86 is composed of.

The air inlet 70 is installed at a predetermined lower end of the vehicle and receives air by forced wind generated by driving of the vehicle or natural wind caused by stopping, and the air inlet hose 72 is an air distributor. It is hermetically coupled with the 76 and delivers the air introduced through the air inlet 70 to the air distributor 76.

The air inlet 76 is fixedly coupled to the fuel supply hose 74 by the locking member 80, and distributes the air introduced through the air inlet hose 72 to the air passage 78 The discharge port 78 discharges external air supplied from the air distributor 76 to the surface of the fuel supply hose 74.

Here, the air inlet hose 72 is fixedly supported by a fixing clip 84 coupled to the vehicle body panel 82 by a fixing bolt 86.

In another embodiment of the present invention made as described above, when the external air flowing from the air inlet 70 is introduced into the air inlet hose 72, the air distributor 76 receives the air from the air inlet hose 72 It is distributed to the discharge port 78, the discharge port 78 discharges the outside air to the entire surface of the fuel supply hose 74 to block the high heat from the engine and the surface of the fuel supply hose 74 To cool.

The present invention having the above-described embodiments can be implemented in various modifications without departing from the technical gist of the present invention without departing from the embodiments.

As described above, according to the present invention, the washer fluid passage through which the washer fluid is introduced into the surface of the fuel supply hose of the vehicle is formed so that when the surface temperature of the fuel supply hose rises above a certain temperature, the washer fluid is introduced into the washer fluid passage, As the external air is discharged to the supply hose so that the cooling action can be performed, the high heat from the engine is prevented from being applied to the fuel high pressure hose, and the cooling action is performed so that the crack is caused by thermal curing of the fuel high pressure hose. Not only can it be prevented in advance, but also safety problems such as fuel leakage due to crack generation can be solved, and the safety and merchandise of the vehicle can be improved.

Claims (8)

In a fuel supply apparatus of a vehicle having a fuel supply hose extending to supply fuel from a fuel tank to an injector of an engine, Temperature sensing means for sensing a surface temperature of the fuel supply hose; A washer fluid pump for pumping washer fluid stored in the washer fluid tank when the surface temperature of the fuel supply hose sensed by the temperature sensing means rises above a predetermined temperature; Washer liquid inflow means for receiving the washer liquid from the washer liquid tank by the pumping operation of the washer liquid pump to deliver to the fuel supply hose side, Cooling means connected to the washer liquid inlet means and distributed over the entire outer circumferential surface of the fuel supply hose to receive the washer liquid from the washer liquid inlet means; Washer liquid discharge means for recovering the washer liquid introduced into the cooling means to the washer liquid tank, Valve means for regulating the recovery state of the washer liquid by the washer liquid discharge means; When the surface temperature of the fuel supply hose sensed by the temperature sensing means rises above a predetermined predetermined temperature, the washer fluid pump is operated and the valve means is closed to prevent the washer fluid from being recovered and the surface of the fuel supply hose is closed. And a control means for recovering the washer fluid of the cooling means by controlling the opening of the valve means when the temperature is lowered. According to claim 1, The washer liquid inlet means is a washer liquid inlet hose extending from the washer liquid pump receives the washer liquid of the washer liquid tank and delivered to the fuel supply hose side, combined with the washer liquid inlet hose to distribute the washer liquid to the cooling means A high pressure fuel hose heat curing apparatus for a vehicle, comprising a washer liquid distributor. 3. The apparatus of claim 2, wherein the washer fluid inlet hose is fixedly supported by a fixing clip coupled by a vehicle panel and a fixing bolt. The apparatus of claim 2, wherein the washer fluid distributor is hermetically coupled by the washer fluid inlet hose and the sealing clamp, and is fixedly coupled to the fuel supply hose by the locking member. . 2. The apparatus of claim 1, wherein the cooling means comprises a plurality of washer fluid passages through the entire outer circumferential surface of the fuel supply hose. The method of claim 5, wherein the plurality of washer fluid passages are formed in the protected portion is protected by the outer shell, a hinge for desorption is formed on one side, and the other side is characterized in that the clip for fixing when worn on the fuel supply hose. High pressure fuel hose thermal curing device for a vehicle. The washer liquid collecting device according to claim 1, wherein the washer liquid discharging unit is coupled to the washer liquid dust collector for collecting the washer liquid passing through the cooling means, the washer liquid dust collector and the valve means are interposed, and recovers the washer liquid to the washer liquid tank. The high pressure fuel hose heat curing prevention device of a vehicle, characterized in that it comprises a washer fluid discharge hose extending to. In a fuel supply apparatus of a vehicle having a fuel supply hose extending to supply fuel from a fuel tank to an injector of an engine, An air inlet installed outside the vehicle to receive external air; An air inlet hose for transferring external air introduced from the air inlet to a fuel supply hose; An air distributor configured to distribute the external air received from the air inlet hose to the fuel supply hose; And a discharge port for discharging external air distributed by the air distributor to the entire surface area of the fuel supply hose.