KR20010054107A - NOx REDUCTION SYSTEM USING COMBUSTION DEVICE OF EVAPORATION GAS - Google Patents

NOx REDUCTION SYSTEM USING COMBUSTION DEVICE OF EVAPORATION GAS Download PDF

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Publication number
KR20010054107A
KR20010054107A KR1019990054751A KR19990054751A KR20010054107A KR 20010054107 A KR20010054107 A KR 20010054107A KR 1019990054751 A KR1019990054751 A KR 1019990054751A KR 19990054751 A KR19990054751 A KR 19990054751A KR 20010054107 A KR20010054107 A KR 20010054107A
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South Korea
Prior art keywords
gas
combustion
valve
signal
vaporization gas
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KR1019990054751A
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Korean (ko)
Inventor
유재웅
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이계안
현대자동차주식회사
류정열
기아자동차주식회사
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Priority to KR1019990054751A priority Critical patent/KR20010054107A/en
Publication of KR20010054107A publication Critical patent/KR20010054107A/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D41/003—Adding fuel vapours, e.g. drawn from engine fuel reservoir
    • F02D41/0032—Controlling the purging of the canister as a function of the engine operating conditions
    • F02D41/004—Control of the valve or purge actuator, e.g. duty cycle, closed loop control of position
    • 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
    • F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
    • F02M25/08—Engine-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
    • F02M25/0836—Arrangement of valves controlling the admission of fuel vapour to an engine, e.g. valve being disposed between fuel tank or absorption canister and intake manifold
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2250/00—Engine control related to specific problems or objectives
    • F02D2250/36—Control for minimising NOx emissions

Abstract

PURPOSE: A NOx reducing device by using vaporization gas combustor is provided to improve the durability of a combustion gas valve for reducing the generation of NOx by resupplying vaporization gas collected by a canister to a cylinder after burning the gas in a vaporization gas combustor. CONSTITUTION: A NOx reducing device by using vaporization gas combustor includes a vaporization gas combustor(30) connected to a purge control solenoid valve(24) which controls the supply of vaporization gas passed through a canister(38) connected to a fuel tank(34) via a tube way for collecting the vaporization gas, and controlled by a signal of an electronic control unit(28), and a combustion gas valve(32) for controlling the supply of the combustion gas burned in the vaporization gas combustor with respect to an intake tube(26) according to a signal of the electronic control unit.

Description

증발가스 연소기를 이용한 질소산화물 저감장치{NOx REDUCTION SYSTEM USING COMBUSTION DEVICE OF EVAPORATION GAS}NOx REDUCTION SYSTEM USING COMBUSTION DEVICE OF EVAPORATION GAS}

본 발명은 증발가스 연소기를 이용한 질소산화물 저감장치에 관한 것으로서, 보다 상세하게는 캐니스터에 포집된 증발가스를 연소장치에 연소시켜 실린더에 재공급하므로서 질소산화물을 저감하게 한 증발가스 연소기를 이용한 질소산화물 저감장치에 관한 것이다.The present invention relates to a nitrogen oxide reduction apparatus using an evaporative gas combustor, and more particularly, to a nitrogen oxide using an evaporative gas combustor which reduces nitrogen oxides by burning an evaporated gas collected in a canister to a combustion apparatus and supplying it back to a cylinder. It relates to an abatement device.

도1은 종래기술에 따른 배기가스 재순환 장치를 도시한 도면으로, 배기가스 재순환 장치(2)는 배기 다기관(4)과 흡기 다기관(6)의 스로틀 밸브(8) 하단부 사이에 배출가스 순환 통로 그 중간에 전자제어장치의 제어를 받는 EGR밸브(10)를 설치하여 이루어지고 있다.1 is a view showing an exhaust gas recirculation apparatus according to the prior art, wherein the exhaust gas recirculation apparatus 2 includes an exhaust gas circulation passage between the exhaust manifold 4 and the lower end of the throttle valve 8 of the intake manifold 6. In the middle, an EGR valve 10 under the control of the electronic controller is provided.

EGR밸브(exhaust gas recirculation)(10)는 배기가스 재순환 장치를 말하는 것으로, 배기가스중의 질소산화물을 저가하는 수단으로 배기가스(이그조스트가스)의 밀부를 흡기계통에 되돌려(리서큘레이트), 혼합기가 연소할 때 최고 온도를 낮게 하고 질소산화물의 생성량을 적재하는 것, 흡기 다기관으로 되돌려지는 배기가스량의 컨트롤은 스로틀 밸브 부근의 부압이나 배기관내의 배기압에 따라 제어되는 컨트롤 밸브(egr밸브)에 의하여 행해진다.EGR valve (exhaust gas recirculation) 10 refers to an exhaust gas recirculation apparatus, which is a means of lowering nitrogen oxides in exhaust gas, and returns the closet portion of the exhaust gas (egost gas) to the intake cylinder (recirculation). For example, lowering the maximum temperature when the mixer burns, loading nitrogen oxide production, and controlling the amount of exhaust gas returned to the intake manifold are controlled by a negative pressure near the throttle valve or an exhaust pressure in the exhaust pipe (egr valve). ) Is performed.

상기한 종래기술은 연소된 배기가스내 성분중 수분, 미연소 연료등이 재순환되므로 실제로 연소된 산소의 량을 알 수 없으며, 배기가스중 이물질이 연소실내로 들어가게 되어 카본 퇴적등을 발생시켜 녹킹의 원인이 되며 온도(배기가스)가 높아 EGR밸브를 설계시 온도에 대한 내구성이 필요하며, 이 물질에 의해 밸브가 멈출 수 있는 등 문제점이 있다.In the above-mentioned prior art, since moisture, unburned fuel, and the like in the exhaust gas are recycled, the amount of oxygen actually burned is not known, and foreign matter in the exhaust gas enters the combustion chamber, and carbon deposits are generated to cause carbon knocking. The high temperature (exhaust gas) causes the EGR valve to be durable in designing the temperature, and there is a problem such that the valve may be stopped by this material.

따라서 본 발명은 앞에서 언급한 바와 같은 문제점을 해결하기 위하여 발명된 것으로서, 본 발명의 목적은 캐니스터에 포집된 증발가스를 연소장치에 연소시켜 실린더에 재공급하므로서 질소산화물을 저감하게 한 증발가스 연소기를 이용한 질소산화물 저감장치를 제공하는데 있다.Therefore, the present invention has been invented to solve the above-mentioned problems, an object of the present invention is to burn the boil-off gas collected in the canister to the combustion device to supply the cylinder to reduce the nitrogen oxides by reducing the nitrogen oxides It is to provide a nitrogen oxide reduction device used.

도1은 종래기술에 따른 배기가스 재순환 장치를 도시한 도면.1 shows an exhaust gas recirculation apparatus according to the prior art.

도2는 본 발명에 따른 질소산화물 저감장치를 도시한 도면.2 is a view showing a nitrogen oxide reduction device according to the present invention.

이를 실현하기 위한 본 발명은The present invention for realizing this

연료탱크에 관로로 연결되어 증발가스를 포집하는 캐니스터를 통과한 증발가스를 공급을 제어하는 퍼지 컨트롤 솔레노이드 밸브에 연결 설치되어 전자제어장치의 신호로 제어되는 증발가스 연소장치와,An evaporative gas combustor connected to a fuel tank and connected to a purge control solenoid valve that controls the supply of evaporated gas passing through a canister that collects evaporated gas and controlled by a signal of an electronic controller;

상기 증발가스 연소장치에서 연소된 연소가스를 전자제어장치의 신호에 의해흡기관내로 공급을 제어하는 연소가스 밸브로 구성되어 이루어지는 증발가스 연소기를 이용한 질소산화물 저감장치를 제공하는데 있다.The present invention provides a nitrogen oxide reduction device using an evaporative gas combustor comprising a combustion gas valve for controlling the supply of combustion gas combusted by the evaporative gas combustion device into an intake pipe by a signal of an electronic controller.

본 발명은 연료탱크내에서 증발가스를 캐니스터에서 포집하여 통과한 증발가스가 퍼지 컨트롤 솔레노이드 밸브를 거치면 전자제어장치의 신호로 증발가스 연소장치가 작동하여 연소하게 되면 전자제어장치의 신호로 연소가스 밸브를 열어 이물질이 없는 연소가스를 연소실에 공급하게 된다.According to the present invention, when the boil-off gas collected and passed through the canister in the fuel tank passes through the purge control solenoid valve, the boil-off gas combustion device operates by the signal of the electronic control device and burns. Open to supply the combustion gas free of foreign matter to the combustion chamber.

이때 공급된 연소가스에는 탄화수소만이 존재하여 성분이 일정하여 연소가스 밸브를 전자제어장치로 컨트롤하여 연소된 가스의 량을 조정할 수 있고 온도가 낮아 배기가스 대비 연소가스 밸브의 내구를 향상시킬 수 있게 된다.At this time, only hydrocarbon is present in the supplied flue gas so that the composition is constant so that the amount of burned gas can be adjusted by controlling the flue gas valve with an electronic control device and the durability of the flue gas valve can be improved compared to the exhaust gas due to the low temperature. do.

이하, 본 발명의 바람직한 구성 및 작용을 첨부한 도면에 의거하여 보다 상세하게 설명하면 다음과 같다.Hereinafter, the preferred configuration and operation of the present invention will be described in detail with reference to the accompanying drawings.

도2는 본 발명에 따른 질소산화물 저감장치를 도시한 도면이고, 질소산화물 저감장치(20)는 증발가스 제어장치(22)에 있어서, 퍼지 컨트롤 솔레노이드 밸브(24)와 흡기관(26)과의 사이에 전자제어장치(28)의 신호로 작동하는 증발가스 연소장치(30)와, 연소가스 밸브(32)를 설치하여 이루어지고 있다.2 is a view showing a nitrogen oxide reduction device according to the present invention, the nitrogen oxide reduction device 20 in the evaporation gas control device 22, the purge control solenoid valve 24 and the intake pipe 26 The evaporation gas combustion device 30 and the combustion gas valve 32 which operate by the signal of the electronic control apparatus 28 are provided in between.

증발가스 연소장치(30)는 전자제어장치(28)의 신호로 발열하여 히팅되어 공급된 증발가스를 연소시켜 증발가스내의 이물질을 연소시키는 장치이다.The boil-off gas combustion device 30 is a device that generates heat by the signal of the electronic controller 28 and burns the boil-off gas supplied by heating to burn foreign substances in the boil-off gas.

즉, 연료탱크(34)에 관로(36)로 연결되어 증발가스를 포집하는 캐니스터(38)를 통과한 증발가스 공급을 제어하는 퍼지 컨트롤 솔레노이드 밸브(24)에 연결 설치되어 전자제어장치(28)의 신호로 제어 작동되는 장치다.That is, the electronic control device 28 is connected to the fuel tank 34 and connected to the purge control solenoid valve 24 for controlling the supply of the boil-off gas passing through the canister 38 for collecting the boil-off gas. It is controlled by the signal of the device.

연소가스 밸브(32)는 증발가스 연소장치(30)에서 연소된 연소가스를 흡기관(26)내로 공급을 제어하는 밸브로 전자제어장치(28)에 의해 제어되고 있다.The combustion gas valve 32 is a valve for controlling the supply of the combustion gas combusted by the boil-off gas combustion device 30 into the intake pipe 26, and is controlled by the electronic controller 28.

상기한 바와 같이 이루어지는 본 발명의 작용은 연료탱크(34)내에서 증발가스를 캐니스터(38)에서 포집하여 통과한 증발가스가 퍼지 컨트롤 솔레노이드 밸브(24)를 거치면 전자제어장치(28)의 신호로 증발가스 연소장치(30)가 작동하여 연소하게 되면 전자제어장치(28)의 신호로 연소가스 밸브(32)를 열어 이물질이 없는 연소가스를 연소실에 공급하게 된다.The operation of the present invention made as described above is a signal of the electronic control device 28 when the boil-off gas passing through the purge control solenoid valve 24 by collecting the boil-off gas from the canister 38 in the fuel tank 34. When the boil-off gas combustion device 30 operates and burns, the combustion gas valve 32 is opened by the signal of the electronic controller 28 to supply the combustion gas free of foreign substances to the combustion chamber.

이때 공급된 연소가스에는 탄화수소만이 존재하는 등 성분이 일정하여 연소가스 밸브(32)를 전자제어장치(28)로 컨트롤하여 연소된 가스의 량을 조정할 수 있고 연소실의 온도가 낮아지게 된다.At this time, since only the hydrocarbons are present in the supplied combustion gas, the combustion gas valve 32 may be controlled by the electronic control device 28 to adjust the amount of the burned gas and the temperature of the combustion chamber is lowered.

이에 따라 질소산화물 등의 배기가스 대비 연소가스 밸브의 내구를 향상시킬 수 있게 된다.Accordingly, the durability of the combustion gas valve can be improved compared to the exhaust gas such as nitrogen oxide.

연소가스 밸브의 내구성이 향상되며, 배기가스 재순환되는 질소산화물의 저감 효과를 가져오는 발명이다.The durability of the combustion gas valve is improved, and the invention brings about an effect of reducing nitrogen oxides recycled from the exhaust gas.

Claims (1)

증발가스 제어장치에 있어서,In the boil-off gas control device, 연료탱크에 관로로 연결되어 증발가스를 포집하는 캐니스터를 통과한 증발가스를 공급을 제어하는 퍼지 컨트롤 솔레노이드 밸브에 연결 설치되어 전자제어장치의 신호로 제어되는 증발가스 연소장치와,An evaporative gas combustor connected to a fuel tank and connected to a purge control solenoid valve that controls the supply of evaporated gas passing through a canister that collects evaporated gas and controlled by a signal of an electronic controller; 상기 증발가스 연소장치에서 연소된 연소가스를 전자제어장치의 신호에 의해 흡기관내로 공급을 제어하는 연소가스 밸브로 구성되어 이루어짐을 특징으로 하는 증발가스 연소기를 이용한 질소산화물 저감장치.And a combustion gas valve configured to control a supply of combustion gas combusted by the boil-off gas combustion device into an intake pipe by a signal of an electronic controller.
KR1019990054751A 1999-12-03 1999-12-03 NOx REDUCTION SYSTEM USING COMBUSTION DEVICE OF EVAPORATION GAS KR20010054107A (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59181264U (en) * 1983-05-20 1984-12-03 トヨタ自動車株式会社 Automotive fuel vapor recovery equipment
JPS606061A (en) * 1983-06-22 1985-01-12 Toyota Motor Corp Heating and cooling device of fuel steam adsorbing device of internal-combustion engine
JPH0842413A (en) * 1994-07-28 1996-02-13 Mitsubishi Motors Corp Evaporated fuel treating equipment
KR19980027670A (en) * 1996-10-17 1998-07-15 박병재 Combustion Treatment Unit of Fuel Evaporative Gas
JPH11193757A (en) * 1997-12-26 1999-07-21 Suzuki Motor Corp Evaporated fuel pipe structure of internal combustion engine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59181264U (en) * 1983-05-20 1984-12-03 トヨタ自動車株式会社 Automotive fuel vapor recovery equipment
JPS606061A (en) * 1983-06-22 1985-01-12 Toyota Motor Corp Heating and cooling device of fuel steam adsorbing device of internal-combustion engine
JPH0842413A (en) * 1994-07-28 1996-02-13 Mitsubishi Motors Corp Evaporated fuel treating equipment
KR19980027670A (en) * 1996-10-17 1998-07-15 박병재 Combustion Treatment Unit of Fuel Evaporative Gas
JPH11193757A (en) * 1997-12-26 1999-07-21 Suzuki Motor Corp Evaporated fuel pipe structure of internal combustion engine

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