KR200158660Y1 - Pressure compensation damper of fuel tank - Google Patents
Pressure compensation damper of fuel tank Download PDFInfo
- Publication number
- KR200158660Y1 KR200158660Y1 KR2019970028586U KR19970028586U KR200158660Y1 KR 200158660 Y1 KR200158660 Y1 KR 200158660Y1 KR 2019970028586 U KR2019970028586 U KR 2019970028586U KR 19970028586 U KR19970028586 U KR 19970028586U KR 200158660 Y1 KR200158660 Y1 KR 200158660Y1
- Authority
- KR
- South Korea
- Prior art keywords
- pressure
- fuel tank
- pressure sensor
- housing
- hose
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/06—Means for preventing overload or deleterious influence of the measured medium on the measuring device or vice versa
- G01L19/0609—Pressure pulsation damping arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/14—Housings
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
본 고안의 목적은 압력센서의 장착위치에 상관없이 압력소자 부위의 오염을 완벽히 방지하여 압력센서의 내구성을 확보할 수 있으며, 압력센서의 장착위치 설정이 자유로운 연료탱크내의 압력 측정용 압력센서의 오염방지장치를 제공하는 데 있다.The object of the present invention is to ensure the durability of the pressure sensor by completely preventing the contamination of the pressure element irrespective of the mounting position of the pressure sensor, and the contamination of the pressure sensor for pressure measurement in the fuel tank where the mounting position of the pressure sensor is freely set. To provide a prevention device.
상기한 목적을 달성하기 위하여 본 고안은The present invention to achieve the above object is
연료탱크(1)내의 압력을 측정하기 위한 압력소자(3)와, 그 압력소자(3)를 보호하기 위한 하우징(4)과, 하우징(4)의 래퍼런스 포트(5)에 접속하는 벤트호스(6)로 구성되는 압력센서기구에 있어서,A pressure hose 3 for measuring the pressure in the fuel tank 1, a housing 4 for protecting the pressure element 3, and a vent hose connected to the reference port 5 of the housing 4 In the pressure sensor mechanism consisting of 6),
상기 벤트호스(6)에는 하우징(4) 내부와 대기를 단절하되 압력소자(3)의 미세한 압력변화를 흡수하는 압력보상 댐퍼(7)가 구비된 것을 특징으로 한다.The vent hose 6 is characterized in that it is provided with a pressure compensation damper (7) for disconnecting the inside of the housing (4) and the atmosphere, but absorbing the minute pressure change of the pressure element (3).
Description
본 고안은 연료탱크내의 압력측정을 위한 압력센서의 오염방지장치에 관한 것이다.The present invention relates to a pollution prevention device of the pressure sensor for measuring the pressure in the fuel tank.
연료탱크 등 연료계에서 발생한 연료증발가스 처리시스템의 가스누설 발생 여부를 체크하기 위하여 도 2에 도시하는 것과 같이 연료탱크(1) 및 연료증발가스 처리시스템의 압력을 검출하기 위한 목적으로 압력센서(2)를 설치하고 있다.In order to check whether or not gas leakage occurs in the fuel evaporation gas treatment system generated in a fuel system such as a fuel tank, a pressure sensor for the purpose of detecting pressure in the fuel tank 1 and the fuel evaporation gas treatment system as shown in FIG. 2) is installed.
이 압력센서(2)는 연료탱크(1)에 형성된 하우징(4)과 압력소자(3)로 구성되고 하우징(4)은 래퍼런스 포트(5, Reference port)를 통해 대기에 개방되어 있다.The pressure sensor 2 is composed of a housing 4 and a pressure element 3 formed in the fuel tank 1, and the housing 4 is opened to the atmosphere through a reference port 5.
그러나 상기 래퍼런스 포트(5)가 직접 대기에 개방되어 있을 경우 먼지나 물 등의 이물질이 하우징(4)내로 유입되어 압력센서(2)가 고장을 일으키게 되는 원인이 되고 있다.However, when the reference port 5 is directly open to the atmosphere, foreign matter such as dust or water flows into the housing 4, causing the pressure sensor 2 to fail.
이 때문에 도시하는 것과 같이 래퍼런스 포트(5)에 벤트호스(6, Vent hose)를 연결한 후 벤트호스(6)의 단부를 외부에 노출되지 않도록 차체 프레임(13) 등에 삽입하여 처리하고 있다.For this reason, as shown, after the vent hose 6 is connected to the reference port 5, the end of the vent hose 6 is inserted into the vehicle body frame 13 or the like so as not to be exposed to the outside.
그러나 상기와 같이 벤트호스(6)를 사용하는 경우 벤트호스(6)의 설치위치 관계로 압력센서(2)의 장착위치 설정이 제한을 받으며 차체 프레임(13)에의 삽입 등의 공정에 다른 작업성이 나쁘고 완벽한 수밀이 곤란하여 압력센서(2)의 내구성을 보장할 수 없다는 문제점이 지적되고 있다.However, when the vent hose 6 is used as described above, the installation position of the pressure sensor 2 is limited due to the installation position of the vent hose 6, and other workability is required for the process such as insertion into the body frame 13. It is pointed out that this bad and perfect water tightness is difficult and the durability of the pressure sensor 2 cannot be guaranteed.
이에 본 고안은 상기한 문제점을 감안하여 제안된 것으로서 그의 목적으로 하는 것은 압력센서의 장착위치에 상관없이 압력소자 부위의 오염을 완벽히 방지하여 압력센서의 내구성을 확보할 수 있으며, 압력센서의 장착위치 설정이 자유로운 연료탱크내의 압력 측정용 압력센서의 오염방지장치를 제공하는 데 있다.The present invention has been proposed in view of the above problems, and its purpose is to completely prevent contamination of the pressure element regardless of the mounting position of the pressure sensor, thereby ensuring durability of the pressure sensor, and mounting position of the pressure sensor. An object of the present invention is to provide a pollution prevention device of a pressure sensor for measuring pressure in a fuel tank that can be freely set.
상기한 목적을 달성하기 위하여 본 고안은The present invention to achieve the above object is
연료탱크내의 압력을 측정하기 위한 압력소자와, 그 압력소자를 보호하기 위한 하우징과, 하우징의 래퍼런스 포트에 접속하는 벤트호스로 구성되는 압력센서기구에 있어서,In the pressure sensor mechanism comprising a pressure element for measuring the pressure in the fuel tank, a housing for protecting the pressure element, and a vent hose connected to the reference port of the housing,
상기 벤트호스에는 하우징내부와 대기를 단절하되 압력소자의 미세한 압력변화를 흡수하는 압력보상댐퍼가 구비된 것을 특징으로 한다.The vent hose is disconnected from the inside of the housing and the atmosphere, characterized in that the pressure compensation damper for absorbing the minute pressure change of the pressure element.
도 1은 본 고안에 의한 연료탱크의 압력측정용 압력센서의 오염방지장치를 나타내는 도면1 is a view showing a pollution prevention device of the pressure sensor for measuring the pressure of the fuel tank according to the present invention
도 2는 종래 압력센서를 나타내는 도면2 is a view showing a conventional pressure sensor
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
1 : 연료탱크 2 : 압력센서1: fuel tank 2: pressure sensor
3 : 압력소자 4 : 하우징3: pressure element 4: housing
5 : 래퍼런스 6 : 벤트호스5: reference 6: vent hose
7 : 압력보상 8 : 호스접속구7: Pressure compensation 8: Hose port
9 : 대기개방구 10 : 케이스9: waiting opening 10: case
11 : 다이아프램11: diaphragm
이하 본 고안의 구성과 작용을 첨부한 도면을 참조하여 설명한다.Hereinafter, with reference to the accompanying drawings the configuration and operation of the present invention.
도 1은 본 고안에 의한 압력센서의 오염방지장치를 나타내는 도면이다.1 is a view showing a pollution prevention device of the pressure sensor according to the present invention.
도면중 부호 1은 연료탱크이며, 부호 2는 압력센서이다.In the drawing, reference numeral 1 denotes a fuel tank, and reference numeral 2 denotes a pressure sensor.
압력센서(2)는 연료탱크내의 압력을 측정하는 압력소자(3)와, 그 압력소자(3)를 보호하기 위한 하우징(4)과, 하우징(4)의 래퍼런스 포트(5)에 접속하는 벤트호스(6)로 구성된다.The pressure sensor 2 has a pressure element 3 for measuring the pressure in the fuel tank, a housing 4 for protecting the pressure element 3, and a vent connected to the reference port 5 of the housing 4. It consists of a hose 6.
상기 벤트호스(6)에는 압력보상댐퍼(7)가 접속되며, 그 압력보상댐퍼(7)는 일측으로 호스접속구(8)가, 타측으로 대기개방구(9)를 구비하는 플라스틱 재질의 케이스(10)와, 그 케이스(10)의 내부공간을 구획하는 고무재질의 다이아프램(11)으로 구성된다.A pressure compensating damper 7 is connected to the vent hose 6, and the pressure compensating damper 7 has a plastic case having a hose connection port 8 at one side and an air opening 9 at the other side ( 10) and a diaphragm 11 made of rubber that partitions the inner space of the case 10.
상기 다이아프램(11)은 하우징(4) 내부와 대기를 단절하는 것으로서 ∪형과 같이 크게 주름을 준 형태로 케이스(10) 내부 공간을 구획하고 있다.The diaphragm 11 disconnects the inside of the housing 4 from the atmosphere, and partitions the inner space of the case 10 in the form of a corrugation such as an X-shape.
이와같은 본 고안은 압력소자(3) 부위의 압력변화가 있더라도 그 여파는 연료탱크(1)측으로만 미치기 때문에 연료탱크(1)측만 압력 변동이 있게 되며, 주름부로 형성된 다이아프램(11)이 공기의 유동을 흡수하므로 래퍼런스 포트(5)측의 압력변동은 거의 없게 된다.The present invention as described above, even if there is a pressure change in the pressure element (3) part, the aftermath extends only to the fuel tank (1) side, there is a pressure fluctuation only on the fuel tank (1) side, the diaphragm (11) formed by the corrugated portion is Since the flow of water is absorbed, there is almost no pressure fluctuation on the reference port 5 side.
이상과 같은 구성의 본 고안에 의하면 연료탱크내의 압력을 측정하는 압력센서의 벤트호스에 다이아프램막에 의해 양측을 완전 단절하게 되는 압력보상댐퍼를 접속하는 것에 의해서 압력소자를 수용하는 하우징이 외부에 대하여 다이아프램에 의해 완전 차단되므로 외부로부터 압력소자측으로의 먼지 또는 물 등 이물질의 유입방지에 따라 압력센서의 오염에 의한 고장을 방지할 수 있으며, 종래와 달리 압력센서의 장착 위치가 제한을 받지 아니하므로 설계의 자유도가 증가하는 효과가 있다.According to the present invention of the above configuration, the housing for accommodating the pressure element is connected to the vent hose of the pressure sensor for measuring the pressure in the fuel tank by connecting a pressure compensation damper which is completely disconnected by the diaphragm membrane. Since it is completely blocked by the diaphragm, it is possible to prevent the failure caused by contamination of the pressure sensor by preventing the inflow of foreign substances such as dust or water from the outside to the pressure element side. Unlike the conventional method, the installation position of the pressure sensor is not limited. Therefore, the degree of freedom of design is increased.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019970028586U KR200158660Y1 (en) | 1997-10-15 | 1997-10-15 | Pressure compensation damper of fuel tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019970028586U KR200158660Y1 (en) | 1997-10-15 | 1997-10-15 | Pressure compensation damper of fuel tank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR19990015317U KR19990015317U (en) | 1999-05-15 |
| KR200158660Y1 true KR200158660Y1 (en) | 1999-10-15 |
Family
ID=19511974
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019970028586U KR200158660Y1 (en) | 1997-10-15 | 1997-10-15 | Pressure compensation damper of fuel tank |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR200158660Y1 (en) |
-
1997
- 1997-10-15 KR KR2019970028586U patent/KR200158660Y1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR19990015317U (en) | 1999-05-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3319125B2 (en) | Evaporative fuel treatment system for internal combustion engine | |
| US7856965B2 (en) | Natural vacuum leak detection device using diaphragm-seal mechanism | |
| US5621176A (en) | Pressure sensor which prevents leakage of fuel | |
| US6546955B1 (en) | Vapor canister and fuel tank assembly | |
| KR20200010070A (en) | Internal combustion engine comprising a venturi nozzle provided inside a fluid-guiding component which is fluidally connected with a tank vent line | |
| CN109789366B (en) | Dust-proof and splash-proof filter | |
| KR19990076574A (en) | Vehicle tank ventilator | |
| KR200158660Y1 (en) | Pressure compensation damper of fuel tank | |
| KR20050083669A (en) | Gas supply adapter | |
| CN214066411U (en) | Protective cover device and oil tank pressure sensor | |
| US7207226B2 (en) | Semiconductor pressure sensor | |
| KR0142896B1 (en) | Monitoring of evaporative purge system | |
| KR102180269B1 (en) | Internal combustion engine having a valve and a fluid-guiding component and method for monitoring a connection between a valve in a tank vent line and a fluid-guiding component | |
| KR100811916B1 (en) | An air vent structure being in a body with a feeler neck | |
| US10723220B2 (en) | Fuel tank system | |
| US6865928B2 (en) | Construction for end portion of line of vehicle which opens to atmosphere | |
| US10215659B2 (en) | Method and apparatus for leak detection | |
| CN110967141A (en) | Waterproof and moistureproof air pressure balancing device for micro-pressure sensor | |
| JP3141225B2 (en) | Pressure detector and its mounting method | |
| JP3190469B2 (en) | Fuel tank internal pressure sensor mounting structure | |
| JP3763354B2 (en) | Electronic control device | |
| JPH11294284A (en) | Internal pressure sensor mounting structure for motor vehicle fuel tank | |
| EP4190652B1 (en) | Check valve with integrated venting element | |
| US11326726B2 (en) | Fluid connection device having a sensor to sense that a male nozzle is received within a female nozzle | |
| KR970004347Y1 (en) | Integrated canister for automobile |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A201 | Request for examination | ||
| E701 | Decision to grant or registration of patent right | ||
| REGI | Registration of establishment | ||
| FPAY | Annual fee payment |
Payment date: 20070702 Year of fee payment: 9 |
|
| LAPS | Lapse due to unpaid annual fee |