KR19980038643A - Canisters for the treatment of fuel boil-off gases - Google Patents

Canisters for the treatment of fuel boil-off gases Download PDF

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Publication number
KR19980038643A
KR19980038643A KR1019960057558A KR19960057558A KR19980038643A KR 19980038643 A KR19980038643 A KR 19980038643A KR 1019960057558 A KR1019960057558 A KR 1019960057558A KR 19960057558 A KR19960057558 A KR 19960057558A KR 19980038643 A KR19980038643 A KR 19980038643A
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South Korea
Prior art keywords
fuel
canister
gas
case
inlet
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KR1019960057558A
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Korean (ko)
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KR100292723B1 (en
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김재산
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박병재
현대자동차 주식회사
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M25/00Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
    • F02M25/08Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
    • F02M25/0854Details of the absorption canister
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M25/00Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
    • F02M25/08Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
    • F02M2025/0863Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir with means dealing with condensed fuel or water, e.g. having a liquid trap

Abstract

본 발명의 목적은 연료 증발가스를 흡착시 액화시켜 저장하였다가 기화기로 방출하므로서 크기를 축소하고 원가를 절감할 수 있는 캐니스터를 제공하는 데 있다.An object of the present invention is to provide a canister that can reduce the size and reduce the cost by liquefying and storing the fuel evaporated gas when adsorbed and discharged to the vaporizer.
상기한 목적을 달성하기 위한 본 발명은 연료 탱크 측으로부터 발생한 연료 증발가스가 유입되는 유입구와 엔진의 흡기 부압으로 연료 증발가스를 기화기 측으로 보내는 유출구와 대기 유입구를 구비하는 케이스와 이물질을 제거하는 필터와 케이스내의 공간에 충진되어 연료 증발가스를 흡착 저장하는 활성탄과를 포함하는 캐니스터에 있어서, 상기 케이스내 공간을 상하로 구획하도록 내장되며 그의 상부측 유입구를 통해 유입된 연료 증발가스를 응축하여 공간내에 저장한 후 미응축된 가스는 그의 하부측 유출구를 통해 하부로 이동하여 활성탄에 저장되도록 하는 응축기를 구비하는 것을 특징으로 한다.The present invention for achieving the above object is a filter having a case for removing foreign matter and the case having an inlet port and the air inlet port for sending the fuel boil-off gas to the carburetor side by the inlet negative pressure of the engine inlet fuel boiled gas generated from the fuel tank side; A canister including activated carbon filled in a space in a case and adsorbing and storing fuel evaporated gas, wherein the canister is built to partition the space in the case up and down, and condenses and stores the fuel evaporated gas introduced through the upper inlet thereof. The non-condensed gas is then characterized by having a condenser that moves downward through its lower outlet to be stored in activated carbon.

Description

연료 증발가스의 처리용 캐니스터Canisters for the treatment of fuel boil-off gases
본 발명은 연료계에서 발생한 연료 증발가스를 흡착하여 처리하는 캐니스터에 관한 것이다.The present invention relates to a canister for adsorbing and treating fuel boil-off gas generated in a fuel system.
연료 탱크등 연료계에서 발생하는 가솔린 증기(연료 증발가스,Vapor gas)는 탄화수소가 주성분이어서 대기 오염을 방지하기 위하여 대기 중에 방출하지 아니하고 연소실로 유도하여 연소시키기 위하여 도 4 에 도시하는 것과 같이 캐니스터(20)를 사용하여 흡착 저장하였다가 외기와 함께 기화기로 보내게 된다.Gasoline vapor (fuel evaporation gas, Vapor gas) generated in the fuel system such as fuel tank is a canister (shown in Fig. 4) to guide and combust the combustion chamber without releasing it into the atmosphere to prevent air pollution since the hydrocarbon is a main component. 20) is adsorbed and stored and sent to the vaporizer together with the outside air.
그러나 캐니스터(20)는 케이스(21)내에 내장된 활성탄(22)에 연료 증발가스를 흡착 저장하였다가 엔진의 흡기 부압에 의해 방출하는 방식이어서 연료 증발가스가 과도하게 발생하는 경우 흡착 용량의 한계로 넘치는 부분은 대기로 방출하게 되어 대기 오염을 유발하게 되며 흡착 용량을 크게 만드는 것(크기를 크게 만듬)도 원가 부담과 레이아웃상 바람직하지 못하다는 문제점이 있다.However, the canister 20 absorbs and stores the fuel evaporated gas in the activated carbon 22 embedded in the case 21 and releases it by the intake negative pressure of the engine. Therefore, when the fuel evaporated gas is excessively generated, the limit of the adsorption capacity is limited. The overflow part is released into the atmosphere, causing air pollution, and making the adsorption capacity large (making it large) also has a problem in that it is undesirable in terms of cost and layout.
이에 본 발명은 상기한 문제점을 감안하여 제안된 것으로서 그의 목적으로 하는 바는 연료 증발가스를 흡착시 액화시켜 저장하였다가 기화기로 방출하므로서 크기를 축소하고 원가를 절감할 수 있는 캐니스터를 제공하는 데 있다.Accordingly, the present invention has been proposed in view of the above problems, and its object is to provide a canister capable of reducing the size and reducing the cost by liquefying and storing fuel evaporated gas upon adsorption and discharging it into a vaporizer. .
상기한 목적을 달성하기 위한 본 발명은 연료 탱크 측으로부터 발생한 연료 증발가스가 유입되는 유입구와 엔진의 흡기 부압으로 연료 증발가스를 기화기 측으로 보내는 유출구와 대기 유입구를 구비하는 케이스와 이물질을 제거하는 필터와 케이스내의 공간에 충진되어 연료 증발가스를 흡착 저장하는 활성탄과를 포함하는 캐니스터에 있어서, 상기 케이스내 공간을 상하로 구획하도록 내장되며 그의 상부측 유입구를 통해 유입된 연료 증발가스를 응축하여 공간내에 저장한 후 미응축된 가스는 그의 하부측 유출구를 통해 하부로 이동하여 활성탄에 저장되도록 하는 응축기를 구비하는 것을 특징으로 한다.The present invention for achieving the above object is a filter having a case for removing foreign matter and the case having an inlet port and the air inlet port for sending the fuel boil-off gas to the carburetor side by the inlet negative pressure of the engine inlet fuel boiled gas generated from the fuel tank side; A canister including activated carbon filled in a space in a case and adsorbing and storing fuel evaporated gas, wherein the canister is built to partition the space in the case up and down, and condenses and stores the fuel evaporated gas introduced through the upper inlet thereof. The non-condensed gas is then characterized by having a condenser that moves downward through its lower outlet to be stored in activated carbon.
도 1 은 본 발명에 의한 연료 증발가스 처리용 캐니스터를 나타내는 정단면도1 is a front sectional view showing a canister for treating fuel evaporation gas according to the present invention.
도 2 는 동상 캐니스터의 평면도2 is a top view of the statue canister
도 3 은 동상 캐니스터의 A-A 단면도3 is a cross-sectional view A-A of the statue canister
도 4 는 종래의 캐니스터4 is a conventional canister
* 도면의 주요 부분에 대한 부호의 설명* Explanation of symbols for the main parts of the drawings
1 : 캐니스터 2 : 케이스1: canister 2: case
3 : 유입구 4 : 유출구3: inlet 4: outlet
5 : 대기유입구 6 : 필터5: air inlet 6: filter
7 : 활성탄 8 : 격벽7: activated carbon 8: bulkhead
9 : 응축기 10 : 입구부9 condenser 10 inlet
11 : 장착부 12 : 필터11 mounting portion 12 filter
13 : 공간 14 : 유출구13: space 14: outlet
15 : 장착부 16 : 필터15: mounting portion 16: filter
17 : 지지부재17: support member
이하 본 발명의 구성과 작용을 첨부한 도면을 참조하여 설명한다.Hereinafter, the configuration and operation of the present invention will be described with reference to the accompanying drawings.
도 1 은 본 발명에 의한 캐니스터를 나타내는 정단면도이며, 도 2 는 동상 캐니스터의 평면도, 도 3 은 동상 캐니스터의 A-A 단면도이다.1 is a front sectional view showing a canister according to the present invention, FIG. 2 is a plan view of the in-phase canister, and FIG. 3 is an A-A cross-sectional view of the in-phase canister.
캐니스터(1)의 케이스(2) 상부에는 연료 탱크 측에 접속되어 연료 증발가스가 케이스(2)내로 유입되는 유입구(3)와 엔진의 흡기 부압으로 연료 증발가스를 기화기 측으로 보내는 유출구(4)와 대기가 유입되는 대기유입구(5)가 형성되어 있다.The inlet 3, which is connected to the fuel tank side and is connected to the fuel tank side of the canister 1, and the outlet 4 which sends the fuel boil-off gas to the vaporizer side by the intake negative pressure of the engine and the fuel boil-off gas into the case 2; An air inlet 5 through which air is introduced is formed.
그리고 케이스(2) 상부에는 필터(6)가 내장되어 이물질을 여과하며 케이스(2)내의 공간에는 활성탄(7)이 충진되어 있다.In addition, a filter 6 is built in the upper part of the case 2 to filter foreign substances, and activated carbon 7 is filled in the space in the case 2.
그리고 대기 유입 측과를 구획하는 격벽(8)의 일측 공간내로는 거의 케이스(2) 중간부로 응축기(9)가 내장되어 있다.The condenser 9 is built almost in the middle of the case 2 into one space of the partition 8 partitioning the air inflow side.
상기 응축기(9)의 상부로는 입구부(10)가 형성되고 입구부(10)의 장착부(11)에는 필터(12)가 끼워져 있으며 하부로는 내측 공간(13) 측을 향하여 기립하는 원기둥 형상의 유출구(14)가 형성되며 유출구(14) 바깥측으로 돌설된 장착부(15)에는 필터(16)가 장착되어 있다. 여기서 미설명 부호 17은 응축기(9)를 지지하는 지지부재이다.An inlet portion 10 is formed at an upper portion of the condenser 9, and a filter 12 is fitted in a mounting portion 11 of the inlet portion 10, and a cylindrical shape stands up toward an inner space 13 side at a lower portion thereof. The outlet 14 is formed and the filter 16 is mounted to the mounting portion 15 protruding outward 14. Here, reference numeral 17 is a support member for supporting the condenser (9).
이와같은 본 발명은 유입구(3)를 통해 케이스(2)내로 유입되는 연료 증발가스는 필터(6)를 통과하여 활성탄(7)의 상부로부터 흡수되다가 응축기(9)를 통과하면서 액체 연료로 응축 되어지게 되며 미응축된 연료 증발가스는 유출구(14)를 통과하여 하단부로 내려가 활성탄(7)에 흡착 저장된다.In the present invention, the fuel boil-off gas introduced into the case 2 through the inlet 3 is absorbed from the upper portion of the activated carbon 7 through the filter 6 and then condensed into liquid fuel while passing through the condenser 9. The uncondensed fuel boil-off gas passes through the outlet 14 and descends to the lower end and is adsorbed and stored in the activated carbon 7.
상기와 같이 응축되는 이유는 응축기(9) 내부 공간(13)으로 유입되어 유출구(14)를 통해 하부로 유동하는 동안에 공간(13)내로 돌출된 원기둥(유출구) 벽면에 부딪히면서 연료 방울이 맺혀 바닥에 고이게 되기 때문으로 이와같이 모여진 액체 연료는 엔진의 흡기 부압이 작용시 퍼지밸브를 통해 엔진으로 흡입 되어지게 되는 것이다.The reason for the condensation as described above is that the fuel droplets form and accumulate on the floor while hitting the wall of the cylinder (outlet) protruding into the space 13 while flowing into the condenser 9 and the inner space 13 and flowing downward through the outlet 14. As such, the collected liquid fuel is sucked into the engine through the purge valve when the intake negative pressure of the engine is applied.
이상과 같은 본 발명에 의하면 캐니스터 내에 유입되는 연료 증발가스가 일부는 활성탄에 흡착 저장되고 일부는 응축기에 의해 응축되어 액체 상태로 저장되었다가 엔진에 공급되어 연소 되므로써 연료 증발가스의 흡수 용량을 증대시키게 되는 결과를 가져와 캐니스터의 크기를 축소하고 원가를 절감하는 것이 가능하다.According to the present invention as described above, some of the fuel boil-off gas flowing into the canister is adsorbed and stored in activated carbon, and some of it is condensed by the condenser and stored in a liquid state, and then supplied to the engine and burned to increase the absorption capacity of the fuel boil-off gas. It is possible to reduce the size of the canister and reduce the cost by bringing the result.

Claims (4)

  1. 연료 탱크 측으로부터 발생한 연료 증발가스가 유입되는 유입구와 엔진의 흡기 부압으로 연료 증발가스를 기화기 측으로 보내는 유출구와 대기 유입구를 구비하는 케이스와 이물질을 제거하는 필터와 케이스내의 공간에 증진되어 연료 증발가스를 흡착 저장하는 활성탄과를 포함하는 캐니스터에 있어서, 상기 케이스내 공간을 상하로 구획하도록 내장되며 그의 상부측 유입구를 통해 유입된 연료 증발가스를 응축하여 공간내에 저장한 후 미응축된 가스는 그의 하부측 유출구를 통해 하부로 이동하여 활성탄에 저장되도록 하는 응축기를 구비하는 것을 특징으로 하는 연료 증발가스의 처리용 캐니스The case has an inlet through which the fuel boil-off gas generated from the fuel tank flows and an intake negative pressure of the engine to the vaporizer side. A canister comprising activated carbon for adsorption storage, wherein the canister is embedded to partition the space in the case up and down, and the condensed fuel evaporated gas introduced through the upper inlet thereof is stored in the space. A canister for treating fuel boil-off gas, characterized in that it comprises a condenser to move downward through the outlet to be stored in the activated carbon.
  2. 제 1 항에 있어서, 상기 응축기의 상부를 유입구와 하부측 유출구에는 필터가 장착되어 있는 것을 특징으로 하는 연료 증발가스의 처리용 캐니스터.2. The canister for treating fuel evaporated gas according to claim 1, wherein a filter is attached to an upper inlet and a lower outlet of the condenser.
  3. 제 2 항에 있어서, 상기 하부측 유출구는 공간 내부로 원기둥 형상으로 기립하도록 돌설된 것을 특징으로 하는 연료 증발가스의 처리용 캐니스터.3. The canister for treating fuel boil-off gas according to claim 2, wherein the lower outlet port is protruded to stand in a cylindrical shape into the space.
  4. 제 3 항에 있어서, 상기 응축기 내에 저장된 액체 연료는 엔진 구동시 흡기 부압에 의해 엔진으로 흡입되어 연소되는 것을 특징으로 하는 연료 증발가스의 처리용 캐니스터.4. The canister for treating fuel boil-off gas according to claim 3, wherein the liquid fuel stored in the condenser is sucked into the engine and burned by the intake negative pressure when the engine is driven.
KR1019960057558A 1996-11-26 1996-11-26 Canister for treating fuel evaporating gas KR100292723B1 (en)

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KR100292723B1 KR100292723B1 (en) 2001-10-24

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KR100683368B1 (en) * 2004-10-06 2007-02-15 대기산업 주식회사 Have a Space Of Canister Automobile
KR100771663B1 (en) * 2006-11-14 2007-11-01 코리아에프티 주식회사 Canister with a fuel gas reducing device
KR102119380B1 (en) 2018-12-03 2020-06-05 현대자동차주식회사 fault diagnosis method of evaporation gas active purge system
KR20200067487A (en) 2018-12-04 2020-06-12 현대자동차주식회사 Active purge system of Fuel Evaporation Gas and Active purge method thereof
KR20200068186A (en) 2018-12-05 2020-06-15 현대자동차주식회사 evaporation gas active purge system and operating method for evaporation gas active purge system
KR20200104021A (en) 2019-02-26 2020-09-03 현대자동차주식회사 Methods for improving fuel amount calibration accuracy at rcv opened and system that improves fuel amount calibration accuracy at rcv opened
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