KR20120033119A - Air vent device for fuel filler neck - Google Patents

Air vent device for fuel filler neck Download PDF

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Publication number
KR20120033119A
KR20120033119A KR1020100094721A KR20100094721A KR20120033119A KR 20120033119 A KR20120033119 A KR 20120033119A KR 1020100094721 A KR1020100094721 A KR 1020100094721A KR 20100094721 A KR20100094721 A KR 20100094721A KR 20120033119 A KR20120033119 A KR 20120033119A
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KR
South Korea
Prior art keywords
filler neck
intake device
fuel
air intake
air
Prior art date
Application number
KR1020100094721A
Other languages
Korean (ko)
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KR101209739B1 (en
Inventor
최용길
Original Assignee
현대자동차주식회사
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Priority to KR1020100094721A priority Critical patent/KR101209739B1/en
Publication of KR20120033119A publication Critical patent/KR20120033119A/en
Application granted granted Critical
Publication of KR101209739B1 publication Critical patent/KR101209739B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K15/04—Tank inlets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K2015/03328—Arrangements or special measures related to fuel tanks or fuel handling
    • B60K2015/03447—Arrangements or special measures related to fuel tanks or fuel handling for improving the sealing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K15/035—Fuel tanks characterised by venting means
    • B60K15/03504—Fuel tanks characterised by venting means adapted to avoid loss of fuel or fuel vapour, e.g. with vapour recovery systems
    • B60K2015/03514—Fuel tanks characterised by venting means adapted to avoid loss of fuel or fuel vapour, e.g. with vapour recovery systems with vapor recovery means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K15/04—Tank inlets
    • B60K2015/0458—Details of the tank inlet
    • B60K2015/0477—Details of the filler neck tank side

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  • Engineering & Computer Science (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Supplying Secondary Fuel Or The Like To Fuel, Air Or Fuel-Air Mixtures (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)

Abstract

An exemplary embodiment of the present invention discloses an air intake device of a fuel filler neck. The air intake device of the disclosed fuel filler neck is configured in a filler neck for injecting fuel into the fuel tank, and is connected to a canister for recovering evaporated gas inside the fuel tank to the intake system, i) on the outer peripheral surface of the filler neck. A cover unit coupled to the air outlet and the water outlet, which are separated from each other, ii) a port unit having an air inlet through which air is introduced, connected to the air outlet, and coupled to a flange of the filler neck, Ⅲ) wraps around the port unit and is coupled to the flange portion of the filler neck to pack the port unit and the flange portion, and includes a packing unit to substantially block the water flowing into the air inlet of the port unit.

Description

AIR VENT DEVICE FOR FUEL FILLER NECK}

An exemplary embodiment of the present invention relates to a fuel filler neck of an automobile, and more particularly, to an air intake device of a fuel filler neck capable of sucking air and supplying it to a canister.

Generally, a vehicle supplies fuel to a cylinder of an engine by a fuel supply apparatus, and is equipped with the fuel injection apparatus for injecting fuel into the fuel tank as a fuel supply apparatus.

The fuel injection device injects fuel into the fuel tank, and is provided with a fuel filler neck for controlling the injection amount of fuel into the fuel tank.

On the other hand, the fuel filler neck has an air intake device for supplying air to the canister that recovers the fuel evaporated gas inside the fuel tank to the intake system when the fuel evaporated gas purge system is operated (in the art, commonly referred to as "canister air vent"). It is attached).

However, in the above structure, water or rainwater due to high-pressure car wash may be introduced into the canister through the air suction device.

If water flows into the canister in this way, the canister's air permeability is lowered, which may lead to premature shut-off during fuel injection, and may cause start-up or deterioration of operation due to water inflow of the canister. .

Exemplary embodiments of the present invention provide an air intake device of a fuel filler neck that allows the air intake to be smoothly supplied to the canister while blocking water from entering the canister at its source.

An air intake device of a fuel filler neck according to an exemplary embodiment of the present invention is configured in a filler neck for injecting fuel into a fuel tank, and connected to a canister for recovering evaporated gas inside the fuel tank to an intake system. And, iii) a cover unit coupled to an outer circumferential surface of the filler neck, having a mutually divided air outlet and a water outlet, and ii) an air inlet for introducing air therein, and being connected to the air outlet. A port unit coupled to the flange portion of the filler neck; and iii) a port unit surrounding the port unit and coupled to the flange portion of the filler neck to seal the port unit and the flange portion, and substantially absorbs water flowing into the air inlet of the port unit. It includes a packing unit for blocking.

In addition, in the air intake device of the fuel filler neck, the cover unit forms a space portion with one side open to the outer circumferential surface of the filler neck, the cover body connecting the air inlet portion of the space portion and the port unit It may include.

In addition, in the air intake device of the fuel filler neck, the cover body is provided with a slit to be connected to the air inlet of the port unit and the connecting portion where a portion of the port unit is located, and the slit under the connecting portion It may be made of a partition wall portion for blocking the water flowing into the air discharge portion through the bottom portion which is located below the partition wall portion to form a water discharge hole as the water discharge portion.

In addition, in the air intake device of the fuel filler neck, the cover body may further include a chamber portion connected to the water discharge hole, in close contact with the outer peripheral surface of the filler neck and connected to the outside.

Further, in the air intake device of the fuel filler neck, the chamber portion may be formed with a chamber hole connected to the water discharge hole.

In addition, in the air intake device of the fuel filler neck, the air discharge portion may be made of a nipple conduit disposed in the space between the bottom portion and the partition wall through the bottom portion from the outside of the chamber portion.

In the air intake device of the fuel filler neck, the nipple conduit may form an inlet at a position higher than the water discharge hole between the bottom portion and the partition wall portion.

In the air intake device of the fuel filler neck, the cover body may integrally form a first hook protrusion that may be hooked to an outer circumferential surface of the filler neck.

Further, in the air intake device of the fuel filler neck, the port unit may include a port body that is closed at the top and open the bottom, forming the air inlet on one side and coupled to the flange of the filler neck have.

In the air intake device of the fuel filler neck, a dam member may be formed in the port body to partially block the air inlet.

Further, in the air intake device of the fuel filler neck, the port body may be formed with a second hook protrusion that can be hooked to the flange portion of the filler neck.

In addition, in the air intake device of the fuel filler neck, the port body may include a coupling flange that can be coupled to the groove-shaped seat surface formed in the flange portion of the filler neck.

In addition, in the air intake device of the fuel filler neck, the coupling flange may be formed with a coupling protrusion that can be coupled to the coupling groove formed in the seat surface.

In addition, in the air intake device of the fuel filler neck, the packing unit may form a rib to block the water flowing into the air inlet of the port unit.

In the air intake device of the fuel filler neck, the packing unit may include a first packing part for sealing a flange part of the filler neck, a seal of the port unit, an opening of the air inlet part, and integrally forming the rib. It may be made of a second packing portion of the dome shape.

According to the air intake device of the fuel filler neck according to an exemplary embodiment of the present invention as described above, it is possible to minimize the water flowing into the air inlet of the port body by the rib of the packing unit and the dam member of the port unit.

In addition, in this embodiment, even if water flows in between the packing unit and the port unit, since the coupling flange portion of the port body is coupled to the seat surface of the filler neck flange portion, the water is filled in the filler neck during operation of the fuel evaporation gas purge system. A gap between the flange portion of the port body and the port body can block water entering the canister.

In addition, in the present embodiment, since the inlet of the air outlet is located relatively higher than the water outlet holes, it is possible to block the water flowing into the canister through the inlet of the nipple pipe.

In addition, in the present embodiment, since the inflow of external dust is blocked by the chamber part during operation of the fuel evaporative gas purge system, it is possible to prevent the negative pressure from acting on the fuel tank due to clogging of the canister due to the inflow of dust.

For this reason, in the present embodiment, crack generation of the fuel tank due to negative pressure acting on the fuel tank can be prevented, and fuel leakage, starting off phenomenon, vehicle fire, and the like can be prevented.

Therefore, in the present embodiment, since water is introduced into the cover unit through the air inlet of the port unit, and can be prevented from flowing into the canister through the cover unit, it solves the problem of starting off caused by the inflow of water into the engine. In addition, it is possible to reduce the occurrence of accidents and recall of the vehicle due to the start-off phenomenon.

These drawings are for the purpose of describing an exemplary embodiment of the present invention, and therefore the technical idea of the present invention should not be construed as being limited to the accompanying drawings.
1 is a combined perspective view showing an air intake device of a fuel filler neck according to an exemplary embodiment of the present invention.
2 is an exploded perspective view of FIG.
3 is a cross-sectional view of FIG. 1.
4 is a perspective view illustrating a cover unit applied to an air intake device of a fuel filler neck according to an exemplary embodiment of the present invention.
5 is a perspective view illustrating a port unit applied to an air intake device of a fuel filler neck according to an exemplary embodiment of the present invention.
6 is an exploded perspective view illustrating a coupling structure of a port unit and a fuel filler neck applied to an air intake device of a fuel filler neck according to an exemplary embodiment of the present invention.
7 is a perspective view illustrating a packing unit applied to an air intake device of a fuel filler neck according to an exemplary embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In order to clearly describe the present invention, parts irrelevant to the description are omitted, and like reference numerals designate like elements throughout the specification.

In addition, since the size and thickness of each component shown in the drawings are arbitrarily shown for convenience of description, the present invention is not necessarily limited to those shown in the drawings, and is shown by enlarging the thickness in order to clearly express various parts and regions. It was.

1 is a combined perspective view illustrating an air intake device of a fuel filler neck according to an exemplary embodiment of the present invention, FIG. 2 is an exploded perspective view of FIG. 1, and FIG. 3 is a cross-sectional view of FIG. 1.

Referring to the drawings, the air intake device 100 of the fuel filler neck according to an exemplary embodiment of the present invention provides a fuel filler neck 1 for injecting fuel into a fuel tank (not shown) of the vehicle. It can be applied to a fuel injection device comprising.

Here, the fuel filler neck 1 (hereinafter referred to as " filler neck " for convenience) is for injecting fuel into the fuel tank and controlling the amount of fuel injected into the fuel tank.

In this case, the filler neck 1 is installed in the filler housing (not shown) installed with a filler door (not shown), as shown in FIG. 7 is formed, and a cap (not shown) can be coupled to the fuel inlet 7.

The air intake device 100 is for supplying air to a canister (not shown in the drawing) which recovers the fuel evaporation gas inside the fuel tank to the intake system when the fuel evaporation gas purge system is operated.

This air intake device 100 is configured on the outer circumferential surface of the filler neck 1, it may be configured to be connected to the canister (not shown in the figure) through the canister connection hose (2).

The air intake device 100 of the fuel filler neck according to the present embodiment has a structure capable of preventing rain or water from entering the canister when air is introduced into the fuel tank or when the fuel boil-off gas purge system is operated or washed. As is done.

To this end, the air intake device 100 of the fuel filler neck according to an exemplary embodiment of the present invention basically includes a cover unit 10, a port unit 40, and a packing unit 70. The configuration will be described as follows.

In this embodiment, the cover unit 10 is to supply air to the canister substantially, it may be coupled to the outer peripheral surface of the filler neck (1).

The cover unit 10 has an air outlet 11 for supplying air to the canister side and a water outlet 13 for discharging water introduced from the outside.

Referring to Figure 4 specifically describes the configuration of the cover unit 10, the cover unit 10 according to the present embodiment has one side open to the outer peripheral surface of the filler neck (1: see Figure 3 below) Cover body 15.

Inside the cover body 15 is formed a space that is connected to the port unit 40 which will be described further below, the space portion connecting portion 17, partition 19 and bottom 21 Compartments.

The connecting portion 17 forms a space in which a part of the port unit 40, which will be described later, is located. The connecting part 17 is disposed above the space part based on the drawing, and a plurality of slits 23 are formed along the longitudinal direction.

The partition 19 may have a smaller width than the connection 17 and may be disposed below the connection 17. The partition wall 19 serves to block water flowing into the air outlet 11 through the slits 23 while maintaining a constant distance from the connecting portion 17.

In addition, the bottom portion 21 is formed of a bottom plate that is spaced apart from the partition wall portion 19 at a lower portion of the partition wall portion 19. The bottom plate of the bottom portion 21 is formed with a plurality of water discharge holes 25 as the water discharge portion 13 mentioned above.

The cover unit 10 according to the present embodiment is a chamber unit 31 which can prevent the phenomenon such as clogging the canister due to dust inflow through the water discharge holes 25 when the fuel evaporation gas purge system is operated. More).

The chamber part 31 is integrally formed on the bottom of the bottom part 21. The chamber part 31 is in close contact with the outer circumferential surface of the filler neck 1 and forms a chamber space that connects the water discharge holes 25 and the outside.

Here, a plurality of chamber holes 33 connected to the water discharge holes 25 are formed at the lower end of the chamber part 31.

On the other hand, the air outlet 11 may be made of a nipple conduit (35) connected to the canister (not shown in the figure) through the canister connection hose (see Figure 3 below).

The nipple conduit 35 forms an inlet 36a which penetrates the bottom 21 from the outside of the chamber 31 and is disposed in the space between the bottom 21 and the partition 19. The opposite side of the inlet 36a consists of an outlet 36b which projects into the bottom of the bottom 21, which can be named as a nipple.

In this case, the inlet of the nipple conduit 35 is located higher than the water discharge holes 25 between the bottom 21 and the partition 19.

On the other hand, the cover body 15 of the cover unit 10 according to the present embodiment may be coupled to the outer peripheral surface of the filler neck (1).

To this end, first hook protrusions 38 that can be hooked to the outer circumferential surface of the filler neck 1 are formed at both ends of the cover body 15, and first hook protrusions 38 are formed on the outer circumferential surface of the filler neck 1. The hook hole 4 (see FIG. 2 hereinafter) is hooked.

In the present embodiment, the port unit 40 as shown in Figures 1 to 3, the air inlet portion, the air inlet portion 41 which is interconnected with the air outlet portion 11 of the cover unit 10 It can be coupled to the flange portion 91 provided in the filler neck (1).

Referring to Figure 5 specifically describes the configuration of the port unit 40, the port unit 40 according to the present embodiment is closed at the top and the bottom is opened, the air inlet portion 41 on one side A port body 43 is formed.

One side surface and the other side surface of the port body 43 are parallel to each other, and forms a space that is connected to the air inlet portion 41 between these surfaces.

Here, the port body 43 is located on the upper side of the connecting portion 17 of the cover body 15 as shown in FIG. In this case, the air inlet part 41 may be connected to the slots 23 of the connection part 17 through the space described above.

In addition, the port body 43 may be integrally formed with a dam member 45 which partially blocks the air inlet 41 to a predetermined height in order to block water flowing into the air inlet 41.

In addition, on both sides of the port body 43 is formed a second hook protrusion 47 that can be hooked to the flange portion 91 of the filler neck (1).

Here, the port body 43 has a second hook protrusion 47 is hooked to the flange portion 91 of the filler neck 1, as shown in Figure 6, the insertion hole formed in the flange portion (91) One side and the other side surface may be hooked to the flange portion 91 through the second hook protrusion 47 in a state of being positioned above the connecting portion 17 of the cover body 15.

In this case, the port body 43 constitutes a coupling flange 49 seated / coupled to the groove-shaped seat surface 95 formed in the flange portion 91 of the filler neck 1.

The coupling flange 49 has a coupling protrusion 51 that can be coupled to the coupling groove 97 formed in the seat surface 95 of the flange portion 91.

In the present embodiment, the packing unit 70 packs the flange portion 91 of the port unit 40 and the filler neck 1, as shown in FIGS. 1 to 3, and introduces air into the port unit 40. It is for blocking the water flowing into the portion 41.

The packing unit 70 surrounds the port unit 40 and is configured to be coupled to the flange portion 91 of the filler neck 1, and the fuel injection hole 7 of the filler neck 1 penetrates as shown in FIG. 7. The through hole 71 is formed in the center portion.

The packing unit 70 includes a first packing portion 73 for sealing the flange portion 91 of the filler neck 1 and a second packing portion 75 for sealing the port unit 40.

The first packing part 73 is formed at the edge of the through-hole 71, and is formed in the bottom surface of the coupling pins 77 which are fitted to the flange part 91 of the filler neck 1 and can be coupled thereto. Doing.

In addition, the second packing part 75 is formed to protrude as a dome shape in the first packing part 73 corresponding to the port unit 40, and opens the air inlet part 41 of the port unit 40. It is made of a shape that can be.

Here, ribs 81 are integrally formed on the upper surface of the second packing part 75 to block water flowing into the air inlet part 41 of the port unit 40.

Hereinafter, the assembly process and the operation of the air intake device 100 of the fuel filler neck according to the exemplary embodiment of the present invention configured as described above will be described in detail with reference to the drawings disclosed above.

First, looking at the assembly process of the air intake device 100, in the present embodiment, the cover body 15 of the cover unit 10 is mounted on the outer peripheral surface of the filler neck 1, the cover body 15 is 1 hook projection 38 is hooked to the hook hole (4) of the filler neck (1) can be mounted on the outer peripheral surface of the filler neck (1).

In this case, the cover body 15 is formed on the outer circumferential surface of the filler neck 1 with the insertion hole 93 formed in the flange portion 91 of the filler neck 1 coinciding with the connecting portion 17 of the cover body 15. )).

As the cover body 15 is mounted on the outer circumferential surface of the filler neck 1 as described above, the chamber portion 31 of the cover body 15 is in close contact with the outer circumferential surface of the filler neck 1 and the water discharge holes 25 ) And a chamber space connecting the chamber holes 33.

Next, in the present embodiment, the port body 43 of the port unit 40 is attached to the flange portion 91 of the filler neck 1.

In this process, when the port body 43 is inserted into the insertion hole 93 of the flange portion 91, one side and the other side of the port body 43 is above the connecting portion 17 of the cover body 15. It can be hooked to the flange portion 91 via the second hook protrusion 47 while being positioned.

Here, as the port body 43 is located above the connection part 17 of the cover body 15, the air inlet part 41 of the port body 43 is mutually connected to the slots 23 of the connection part 17. Connected.

When the mounting of the cover unit 10 and the port unit 40 is completed as described above, in this embodiment, the packing unit 70 is coupled to the flange portion 91 of the filler neck (1).

Looking at this process in detail, first in the present embodiment, the fuel injection hole 7 of the filler neck 1 is inserted into the through-hole 71 of the packing unit 70, the coupling pin of the first packing portion 73 The 77 is coupled to the flange portion 91 and the flange portion 91 is sealed.

In the above process, the first packing portion 73 is coupled to the flange portion 91 of the filler neck 1 through the conventional fastening means, the second packing portion 75 is the port body (of the port unit 40) 43) Enclose and seal. In this case, the second packing part 75 opens the air inlet part 41 of the port body 43.

Therefore, according to the air intake device 100 of the fuel filler neck according to an exemplary embodiment of the present invention assembled as described above, even if excess water by rain water or high-pressure car wash flows into the filler housing (5) packing unit ( Since the ribs 81 are formed in the second packing portion 75 of 70, water does not flow into the air inlet portion 41 of the port body 43.

That is, in this embodiment, the water flows down along the upper surface of the first packing part 73 while being blocked by the ribs 81 of the second packing part 75.

In the present embodiment, since the dam member 45 is formed in the port body 43 packed in the second packing part 75, the water is blocked by the dam member 45 and thus the It does not flow into the air inlet 41.

Thus, in this embodiment, the water flowing into the air inlet 41 of the port body 43 by the rib 81 of the packing unit 70 and the dam member 45 of the port unit 40 can be minimized. Will be.

On the other hand, in the present embodiment, when the air is introduced into the fuel tank or when the fuel boil-off gas purge system is operated or washed, rainwater or water may be introduced through the air inlet 41 of the port body 43.

In this case, the water flowing through the air inlet portion 41 of the port body 43 falls into the partition wall portion 19 through the slots 23 formed in the connection portion 17 of the cover body 15, While being blocked by the partition 19, the air flows down to the bottom of the bottom 21 without being introduced into the air outlet 11.

Water flowing into the bottom portion 21 flows into the chamber space of the chamber portion 31 through the water discharge holes 25 and through the chamber holes 33 of the chamber portion 31, the cover body ( It will flow out of 15).

Here, the inlet 36a of the nipple conduit 35 as the air outlet 11 is located relatively higher than the water outlet holes 25 of the bottom 21, and thus flows down to the bottom 21. The water may be discharged to the chamber part 31 through the water discharge holes 25 without entering the inlet 36a of the nipple conduit 35.

On the other hand, the port body 43 according to the present embodiment has a coupling flange 49 is seated on the groove-shaped seat surface 95 formed in the flange portion 91 of the filler neck 1, the flange portion ( Since it is hooked to 91, a gap does not arise between the flange part 91 of the filler neck 1 and the port body 43. FIG.

Therefore, in this embodiment, even if water flows in between the second packing portion 75 and the port body 43, the engaging flange portion 49 of the port body 43 is the seat surface 95 of the flange portion 91. Since water does not penetrate through, during operation of the fuel evaporative purge system, water does not enter the interior of the cover body 15.

On the other hand, since the chamber portion 31 is formed in the lower portion of the cover body 15 in the present embodiment, the water flowing into the chamber portion 31 through the water discharge holes 25 is the chamber holes. Through 33 can be discharged smoothly.

In the present embodiment, since the inflow of external dust is blocked by the chamber part 31 during the operation of the fuel evaporative gas purge system, it is possible to prevent the negative pressure from acting on the fuel tank due to clogging of the canister due to dust inflow. Can be.

Therefore, in the present embodiment, it is possible to prevent the generation of cracks in the fuel tank due to the negative pressure acting on the fuel tank, and to prevent the leakage of fuel, the starting off phenomenon, the vehicle fire, and the like.

As described above, in the air intake device 100 of the fuel filler neck according to the exemplary embodiment of the present invention, water is introduced into the cover unit 10 through the air inlet portion 41 of the port unit 40, It can be prevented from flowing into the canister through the cover unit 10.

Therefore, in the present embodiment, since water can be blocked from inflowing into the canister, it is possible to solve the problem of starting off caused by the inflow of water into the engine, and to reduce the occurrence of an accident and recall of the vehicle due to the starting off phenomenon. .

Although the preferred embodiments of the present invention have been described above, the present invention is not limited thereto, and various modifications and changes can be made within the scope of the claims and the detailed description of the invention and the accompanying drawings. Naturally, it belongs to the scope of the invention.

1 ... filler neck 10 ... cover unit
11 ... air outlet 13 ... water outlet
15 ... cover body 17 ... connections
19 ... bulkhead 21 ... bottom
23.Slot 25 ... Water outlet
31 ... chamber part 33 ... chamber hole
35.Nipple pipe 38.1 hook hook projection
40 ... port unit 41 ... air inlet
43. Port body 45. Dam member
47 ... 2nd hook projection 49 ... Mating flange
51 ... Coupling protrusion 70 ... Packing unit
71 ... through hole 73 ... first packing part
75 ... 2nd packing part 77 ... Coupling pin
81 ... Rib 91 ... Flange
95 ... seat

Claims (15)

An air intake device configured in a filler neck for injecting fuel into a fuel tank, the air intake device being connected to a canister for recovering evaporated gas inside the fuel tank to an intake system.
A cover unit coupled to an outer circumferential surface of the filler neck and having air outlets and water outlets separated from each other;
A port unit having an air inlet portion through which air is introduced, connected to the air outlet portion, and coupled to a flange portion of the filler neck; And
A packing unit surrounding the port unit and coupled to the flange portion of the filler neck to pack the port unit and the flange portion, and substantially block water flowing into the air inlet of the port unit.
Air intake device of the fuel filler neck comprising a. The method according to claim 1,
The cover unit,
An air intake device of a fuel filler neck including a cover body which forms an open space on one side with respect to an outer circumferential surface of the filler neck, and connects the space portion and an air inlet of the port unit. The method of claim 2,
The cover body,
A connection part provided with a slit connected to an air inlet of the port unit, wherein a part of the port unit is located;
A partition wall part for blocking water flowing into the air discharge part through the slit under the connection part;
The bottom part which is located below the partition part and forms a water discharge hole as the water discharge part
Air intake device of fuel filler neck consisting of. The method of claim 3,
The cover body,
The air intake device of the fuel filler neck further comprises a chamber portion connected to the water discharge hole, in close contact with the outer peripheral surface of the filler neck and connected to the outside. The method of claim 4, wherein
And a chamber hole connected to the water discharge hole is formed in the chamber part. The method of claim 4, wherein
The air discharge portion,
An air intake device for a fuel filler neck comprising a nipple conduit disposed through the bottom portion outside the chamber portion and into a space between the bottom portion and the partition portion. The method of claim 6,
The nipple conduit,
An air intake device of a fuel filler neck forming an inlet at a position higher than the water discharge hole between the bottom portion and the partition wall portion. The method of claim 3,
The cover body,
And an air intake device of the fuel filler neck integrally forming a first hook protrusion that may be hooked to an outer circumferential surface of the filler neck. The method according to claim 1,
The port unit,
An air intake device for a fuel filler neck comprising a port body closed at an upper portion thereof and open at a lower portion thereof, the air inlet portion being formed at one side thereof and coupled to a flange portion of the filler neck. 10. The method of claim 9,
The port body of the fuel filler neck is provided with a dam member for blocking the air inlet portion. 10. The method of claim 9,
The port body is an air intake device of the fuel filler neck is formed with a second hook projection that can be hooked to the flange portion of the filler neck. 10. The method of claim 9,
The port body,
An air intake device for a fuel filler neck including a coupling flange that may be coupled to a groove-shaped seating surface formed in the flange portion of the filler neck. The method of claim 12,
The air intake device of the fuel filler neck is formed in the coupling flange has a coupling protrusion that can be coupled to the coupling groove formed in the seat surface. The method according to claim 1,
The packing unit,
Air intake device of the fuel filler neck to form a rib to block the water flowing into the air inlet of the port unit. The method of claim 14,
The packing unit,
A first packing part for sealing a flange part of the filler neck,
A second packing part having a dome shape which seals the port unit, opens the air inlet part, and integrally forms the rib;
Air intake device of fuel filler neck consisting of.
KR1020100094721A 2010-09-29 2010-09-29 Air vent device for fuel filler neck KR101209739B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102152242B1 (en) * 2019-03-14 2020-09-04 삼보모터스주식회사 Capless Fuel Tank Closure Assembly Device for Preventing Fuel from Mixing

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Publication number Priority date Publication date Assignee Title
KR102145282B1 (en) * 2018-11-23 2020-08-18 삼보모터스주식회사 Filler nect device with improved mounting bracket structure

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100736410B1 (en) * 2006-05-17 2007-07-16 코리아에프티 주식회사 Air drain device of canister for a vehicles

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102152242B1 (en) * 2019-03-14 2020-09-04 삼보모터스주식회사 Capless Fuel Tank Closure Assembly Device for Preventing Fuel from Mixing

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