Fuel Evaporation Gas Treatment Device at Fuel Injection

专利摘要:
An object of the present invention is to provide an apparatus for treating fuel evaporation gas which prevents fuel evaporation gas from being released into the atmosphere when gasoline is refueled and prevents overload of the canister. The present invention for achieving the above object in the fuel system comprising a fuel tank and a fuel inlet (1) which is a passage for injecting fuel into the fuel tank, A fuel evaporation gas supply pipe (4) for guiding fuel evaporation gas generated in the fuel tank to a canister; A valve (7) for opening and closing the fuel evaporation gas supply pipe (4); A fuel door (2) rotatably installed in the fuel inlet (1) and integrally formed with an operating member (8) for opening and operating the valve (7) while being rotated and opened when the fuel nozzle is inserted; Characterized in that configured to include.
公开号:KR19980046424A
申请号:KR1019960064764
申请日:1996-12-12
公开日:1998-09-15
发明作者:김재산
申请人:박병재；현대자동차 주식회사；
IPC主号:

专利说明:

Fuel Evaporation Gas Treatment Device at Fuel Injection
The present invention relates to an apparatus for treating fuel evaporation gas which prevents fuel evaporation gas in the fuel tank from being discharged to the outside through the fuel injection port and adsorbs the gas to the canister when the gasoline fuel is injected.
When fuel is injected into the fuel tank, a nozzle is inserted into the fuel inlet 20 connected to the fuel tank (not shown) to inject fuel as shown in FIG. 2. At this time, the door 22 (Flapper) rotatable by the hinge 21 rotates when the fuel supply nozzle is inserted to open the inlet.
However, in the related art, when the fuel is filled in the fuel tank, the fuel evaporation gas in the fuel tank is discharged to the outside through the conduit 23 due to the increased pressure, which causes the environmental pollution.
Accordingly, the present invention has been proposed in view of the above problems, and an object thereof is to provide an apparatus for treating fuel evaporation gas which prevents fuel evaporation gas from being released into the atmosphere when gasoline is refueled and prevents overload of the canister. .
The present invention to achieve the above object
In a fuel system comprising a fuel tank and a fuel inlet which is a passage for injecting fuel into the fuel tank,
A fuel evaporation gas supply pipe which guides the fuel evaporation gas generated in the fuel tank to the canister and is disposed to pass through the fuel inlet on the way;
A valve for opening and closing the fuel evaporation gas supply pipe;
A fuel door rotatably installed in the fuel inlet, the fuel door being integrally formed with an operation member for opening the valve while being rotated and opened when the fuel nozzle is inserted; Characterized in that configured to include.
1 is a view showing a fuel evaporation gas treatment apparatus at the time of fuel injection according to the present invention
2 is a view showing a conventional fuel inlet
※ Explanation of code for main part of drawing
1: fuel inlet 2: fuel door (Flapper)
3: hinge 4: fuel evaporation gas supply pipe
5: valve housing 6: return spring
7 valve 8 operating member
9: diaphragm 10: diaphragm fixing part
11: valve seat
Hereinafter, the configuration and operation of the present invention will be described with reference to the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view showing an apparatus for treating fuel evaporation gas during fuel injection according to the present invention, in which 1 is a fuel inlet for injecting fuel into a fuel tank (not shown) and 2 is a fuel for opening and closing a fuel inlet 1. It rotates about the hinge 3 and opens when the nozzle is inserted for fueling into the door. The fuel evaporation gas generated in the fuel tank is sent to the canister through the fuel evaporation gas supply pipe (4), and the valve housing (5) mounted on the wall of the fuel inlet (1) in the middle of the fuel evaporation gas supply pipe (4). It is provided.
In the valve housing 5, a valve 7 which is elastically supported by the return spring 6 is embedded, and the valve 7 is opened and closed by the fuel door 2. To this end, the fuel door 2 is integrally formed with an operation member 8 bent in an L shape, and when the fuel door 2 is rotated by inserting the nozzle, the operation member 8 is distal to the valve 7. By pushing the diaphragm 9 fixed portion 10 of the valve 7 is separated from the valve seat 11 to open the fuel evaporation gas supply pipe (4).
The diaphragm 9 is a partition wall for preventing the fuel evaporation gas flowing through the fuel evaporation gas supply pipe 4 from being discharged through the fuel inlet 1.
Next, the operation of the present invention will be described.
Since the valve 7 is in close contact with the valve seat 11 with the elastic force of the return spring 6 while the fuel door 2 is closing the fuel inlet 1, the fuel evaporation gas in the fuel tank is supplied to the supply pipe. It is not possible to move to the canister through (4). When the vehicle is stopped in front of the gas station of the gas station for fueling, and the nozzle is inserted into the fuel inlet 1, the fuel door 2 is rotated and opened to open the valve 7 having the operating member 8 located on one side thereof. The valve 7 is moved by pressing the diaphragm fixing part 10 of the fuel tank. The fuel evaporation gas in the fuel tank is increased in pressure by the supplied fuel, is transferred to the canister through the open feed pipe 4, and is adsorbed. When driven, it is supplied to the carburetor and burned.
As described above, the present invention prevents the fuel evaporation gas from being released to the outside due to the pressure rise in the fuel tank, but is adsorbed into the canister by a valve which is opened in conjunction with the opening of the fuel door to prevent the external emission of the fuel evaporation gas. will be. The fuel door (2) is closed when the oil supply nozzle is finished and the fuel nozzle is pulled out (the fuel door is closed by the elastic force of the torsion spring, not shown) .The valve (7) is fed by the elastic force of the return spring (6). Will be blocked again.
According to the fuel evaporation gas treatment apparatus according to the present invention as described above, the valve is opened by the fuel door that is opened by rotating when the fuel is injected, thereby opening the supply pipe connecting the fuel tank and the canister to release the air during the fuel injection. This prevents and has the effect of preventing overload of the canister under normal use conditions.

权利要求:
Claims (4)
[1" claim-type="Currently amended] In a fuel system comprising a fuel tank and a fuel inlet which is a passage for injecting fuel into the fuel tank,
A fuel evaporation gas supply pipe for guiding fuel evaporation gas generated in the fuel tank to a canister;
A valve for opening and closing the fuel evaporation gas supply pipe;
A fuel door rotatably installed in the fuel inlet, the fuel door being integrally formed with an operation member for opening the valve while being rotated and opened when the fuel nozzle is inserted; Fuel evaporation gas processing device at the time of fuel injection, characterized in that configured to include.
[2" claim-type="Currently amended] The method of claim 1,
And a return spring of the valve is a return spring.
[3" claim-type="Currently amended] The method of claim 2,
The valve is accommodated in the valve housing, the valve housing is connected to the middle of the fuel evaporation gas supply pipe and attached to the fuel injection port, characterized in that the fuel evaporation gas processing apparatus at the time of fuel injection.
[4" claim-type="Currently amended] The method of claim 3, wherein
The upper portion of the diaphragm is sandwiched by a diaphragm fixing portion of the valve tip and the operating member is pushed to the diaphragm fixing portion to open the valve.

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同族专利:

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公开号 | 公开日

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引用文献:

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公开号 | 申请日 | 公开日 | 申请人 | 专利标题

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法律状态:
1996-12-12|Application filed by 박병재, 현대자동차 주식회사

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1996-12-12|Priority to KR1019960064764A

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1998-09-15|Publication of KR19980046424A

优先权:

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申请号 | 申请日 | 专利标题

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KR1019960064764A|KR19980046424A|1996-12-12|1996-12-12|Fuel Evaporation Gas Treatment Device at Fuel Injection|