KR20030028030A - Smoke discharge reducing apparatus of diesel engine - Google Patents

Smoke discharge reducing apparatus of diesel engine Download PDF

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Publication number
KR20030028030A
KR20030028030A KR1020010059926A KR20010059926A KR20030028030A KR 20030028030 A KR20030028030 A KR 20030028030A KR 1020010059926 A KR1020010059926 A KR 1020010059926A KR 20010059926 A KR20010059926 A KR 20010059926A KR 20030028030 A KR20030028030 A KR 20030028030A
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South Korea
Prior art keywords
exhaust
water
muffler
exhaust gas
pipe
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KR1020010059926A
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Korean (ko)
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KR100461447B1 (en
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조영연
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현대자동차주식회사
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/04—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust using liquids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2470/00—Structure or shape of gas passages, pipes or tubes
    • F01N2470/30—Tubes with restrictions, i.e. venturi or the like, e.g. for sucking air or measuring mass flow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2530/00—Selection of materials for tubes, chambers or housings
    • F01N2530/22—Flexible elastomeric material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/14—Arrangements for the supply of substances, e.g. conduits
    • F01N2610/1453—Sprayers or atomisers; Arrangement thereof in the exhaust apparatus

Abstract

PURPOSE: A smoke discharge reduction apparatus is provided to prevent environmental contamination by reducing the particle mass discharged during the high speed high load operation of diesel engine. CONSTITUTION: A smoke discharge reduction apparatus comprises an orifice unit(4) having a narrow cross section, which is formed at an exhaust pipe(1) so as to increase flow velocity of the exhaust gas; a water injection pipe(3) connected to the orifice unit of the exhaust pipe, which serves as a passage for conveying the water sucked into the orifice unit by the vacuum pressure generated during the passage of the exhaust gas and injected in a fog phase; and a water tank(5) for storing the water to be supplied to the water injection pipe.

Description

디젤차량의 매연 배출 저감장치{Smoke discharge reducing apparatus of diesel engine}Smoke discharge reducing apparatus of diesel engine

본 발명은 디젤차량의 매연 배출 저감 장치에 관한 것이다.The present invention relates to an apparatus for reducing soot emissions of diesel vehicles.

디젤엔진의 경우 가솔린 엔진에 비하여 배기가스 배출량이 많아 대기 오염 유발 효과가 큰데 특히 검댕이(Particle mass, 탄매)배출량이 크게 증가하여 호흡기 질환등 각종 질병을 일으키는 원인이 되고 있다.In the case of diesel engines, the emission of gas is higher than gasoline engines, which is a great effect of causing air pollution. Particularly, the amount of soot (particle mass) is greatly increased, causing various diseases such as respiratory diseases.

그런데 배기가스에 포함된 유해성분들을 정화하여 배출하는 방안으로는 종래의 경우 촉매컨버터를 장착하여 촉매에 의한 산화 환원 반응에 의해 유해가스 성분을 정화한 후 배출시키고 있다.However, as a method of purifying and discharging harmful components contained in the exhaust gas, in the conventional case, a catalytic converter is mounted to purify and discharge the harmful gas components by a redox reaction by a catalyst.

그러나 검댕이의 경우 가스성분이 아닐뿐 아니라 비교적 크고 벽면등에 잘 달라붙는 성질을 가지고 있어, 배기가스속에 이러한 검댕이가 많이 포함되는 경우 벌집 형상으로 된 촉매를 막히게 하거나 손상시키게 되므로 촉매컨버터를 배기가스가 통과하기 전에 정화시키는 것이 필요하나 종래의 경우 검댕이 성분의 처리를 위한 특별한 방안이 없어 디젤엔진의 경우 상기한 문제점을 유발하는 일이 종종 있어 왔다.However, soot is not only a gas component but also has a property that is relatively large and adheres well to walls. If such soot is included in the exhaust gas, the catalyst in the honeycomb block or damage the catalyst so that the exhaust gas passes through the catalytic converter. It is necessary to purify before, but in the conventional case there is no special way for the treatment of soot component has often caused the above problems in the diesel engine.

이에 본 발명은 상기한 점을 감안하여 제안한 것으로서 그의 목적으로 하는 것은 검댕이 배출량이 많아지는 고속고부하 운전에서 별도로 외부로부터 물을 배기 파이프내로 도입하여 검댕이 입자를 제거하게 되는 디젤차량의 매연배출 저감 장치를 제공하는데 있다.Accordingly, the present invention has been proposed in view of the above, and its object is to provide a soot emission reduction device for diesel vehicles which removes soot particles by introducing water from the outside into the exhaust pipe separately in a high speed and high load operation in which soot emissions are increased. To provide.

상기한 목적을 달성하기 위하여 본 발명은 배기파이프와 머플러를 포함한 배기계에 있어서,In order to achieve the above object, the present invention provides an exhaust system including an exhaust pipe and a muffler,

상기 배기파이프에 배기가스의 유속을 증대시키기 위하여 형성되는 좁은 단면적의 오리피스부와;An orifice having a narrow cross-sectional area formed in the exhaust pipe to increase the flow velocity of the exhaust gas;

상기 배기파이프의 오리피스부에 접속되어 배기가스 통과시 발생하는 부압에 의해 오리피스부로 흡입되어 안개상으로 분사되는 물을 이송하기 위한 통로인 물분사관; 및A water spray pipe connected to an orifice portion of the exhaust pipe and serving as a passage for transporting water sucked into the orifice portion by negative pressure generated when the exhaust gas passes and sprayed into the mist; And

상기 물 분사관에 공급하기 위한 물을 저장하는 물탱크;A water tank storing water for supplying the water injection pipe;

로 구성되어 있다.Consists of

도 1은 본 발명에 의한 디젤차량의 매연 배출 저감장치를 나타내는 도면1 is a view showing a smoke emission reduction device of a diesel vehicle according to the present invention.

※ 도면의 주요 부분에 대한 부호의 설명※ Explanation of codes for main parts of drawing

1 : 배기파이프 2 : 머플러1: exhaust pipe 2: muffler

3 : 물분사관 4 : 오리피스부3: water spray pipe 4: orifice part

5 : 물탱크 6,7 : 격벽5: water tank 6,7: bulkhead

8 : 진동판 9 : 댐퍼부재8 diaphragm 9 damper member

10 : 드레인플러그 11 : 리어플로어패널10: drain plug 11: rear floor panel

12 : 러버그로메트 13 : 검댕이12: Lubbock Romm 13: Soot

이하 본 발명의 구성을 첨부한 도면을 참조하여 설명한다.Hereinafter, the configuration of the present invention will be described with reference to the accompanying drawings.

도 1은 본 발명에 의한 디젤 차량의 매연 배출 저감장치를 나타내는 도면으로 도면중 부호 1 및 2는 배기계를 구성하는 배기파이프와 머플러이다.BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view showing an apparatus for reducing soot emissions in a diesel vehicle according to the present invention. In the drawings, reference numerals 1 and 2 are exhaust pipes and mufflers constituting an exhaust system.

상기 배기파이프(1)의 도중에는 단면적이 축소된 오리피스부(4)가 형성되고, 그 오리피스부(4)에 강체로 구성된 물분사관(3)이 접속되며, 물분사관(3)의 타단은 물탱크(5)내에 수용되어 있다.An orifice portion 4 having a reduced cross-sectional area is formed in the middle of the exhaust pipe 1, and a water spray tube 3 made of a rigid body is connected to the orifice portion 4, and the other end of the water spray tube 3 is a water tank. It is housed in (5).

또 상기 머플러(2)내에는 배기가스를 감압하기 위한 복수개의 격벽(6)(7)이 지그재그로 설치되어 있으며, 상기 격벽(6)(7)의 전방에는 배기가스압에 진동할 수 있게 얇은 두께의 진동판(8)이 1개이상 설치되어 있다.In addition, a plurality of partitions 6 and 7 for reducing pressure of the exhaust gas are zigzag in the muffler 2, and the thickness of the muffler 2 is thin enough to vibrate the exhaust gas pressure in front of the partitions 6 and 7. At least one diaphragm 8 is provided.

진동판(8)들 사이는 댐퍼부재(9)로 완충되게 접속되어 있으며, 또 상기 머플러(2)의 바닥에는 드레인플러그(10)가 장착되어 있다.The diaphragm 8 is connected to the damper member 9 to be buffered, and the drain plug 10 is attached to the bottom of the muffler 2.

여기서 미설명부호 11은 리어플로어패널이고, 부호12는 물분사관(3)을 리어플로어패널(11)에 밀봉 및 완충되게 장착하는 러버그로매트(12, rubber grommat)이다.Here, reference numeral 11 denotes a rear floor panel, and reference numeral 12 denotes a rubber grommat 12 which seals and buffers the water spray pipe 3 to the rear floor panel 11.

엔진이 구동되어 배기파이프(1)를 통해 배기가스가 배출되면 오리피스부(4)를 통과하면서 유속이 증대되어지게 괸다.When the engine is driven and the exhaust gas is discharged through the exhaust pipe 1, the flow rate is increased while passing through the orifice portion 4.

유속이 증대되면 베르누이 정리에 따라 압력이 감소되어 부압이 형성되며, 이 부압에 의해 물탱크(5)내의 물이 물분사관(3)을 통해 오리피스부(4)로 흡입되어 배기가스와 함께 섞여 머플러(2)측으로 배출된다.As the flow rate increases, the pressure decreases according to Bernoulli's theorem, so that negative pressure is formed, and by this negative pressure, the water in the water tank 5 is sucked into the orifice part 4 through the water injection pipe 3 and mixed with the exhaust gas and muffler It is discharged to (2) side.

이와같이 하여 배기파이프(1)내에 분사된 안개상의 작은 물방울들은 배기가스중의 입자성분인 검댕이(particle mass, 13)들과 결합하여 분해되면서 배출되는 과정에 낙하되어 머플러(2)의 바닥면(2a)에 쌓이게 되며, 검댕이(13)가 분리된 배기가스는 격벽(6)(7)들을 통과하면서 소음과 압력이 감쇄된 후 배출되어지게 된다.In this way, the mist-like droplets injected into the exhaust pipe 1 are dropped in the process of being discharged while being combined with the soot (particle mass 13), which is a particle component in the exhaust gas, to the bottom surface (2a) of the muffler (2). ), Soot 13 is separated and the exhaust gas is discharged after passing through the partitions (6) (7) attenuated noise and pressure.

한편, 진동판(8)은 배기가스가 배출될 때의 배압에 의하여 진동하게 되는데 분사된 물입자들과 결합하지 못한 검댕이(17)들은 진동하는 진동판(8)에 의해 분해되어지게 된다.On the other hand, the diaphragm 8 is vibrated by the back pressure when the exhaust gas is discharged, soot 17 that is not combined with the injected water particles are decomposed by the vibrating diaphragm (8).

이와같이하여 바닥면(2a)에 검댕이 입자들이 쌓이게 되면 드레인플러그(10)를 개방하여 외부로 배출하여 청소하게 되며, 검댕이 배출량이 많은 고속 고부하 운전시엔 배기가스 유속증대에 의해 더많은 량의 물이 배기파이프내로 분사되므로 검댕이 분리제거가 운전 속도에 비례하게 된다.In this way, when soot particles accumulate on the bottom surface 2a, the drain plug 10 is opened and discharged to the outside for cleaning.In the case of the high speed and high load operation with a lot of soot discharge, a larger amount of water is exhausted by increasing the exhaust gas flow rate. Since it is sprayed into, soot separation is proportional to the operating speed.

그리고 상기 진동판(8)은 배기가스압에 의해 자연적으로 진동하도록 할 수도 있으나, 전자제어장치(16)에 의해 전원이 공급될 때 고전압이 인가되어 전기적으로 진동하는 진동체로 구성하여도 좋다.The diaphragm 8 may vibrate naturally by the exhaust gas pressure. However, the diaphragm 8 may be configured as a vibrating body that is electrically vibrated with a high voltage applied when power is supplied by the electronic controller 16.

또 상기 진동판(8)의 진동이 머플러(2)에 전달되어 진동이 차실내로 유입되는 것을 완충하기 위하여 진동판(8) 사이가 완충역활을 하는 댐퍼부재(9)로 접속되어 있다.In addition, in order to buffer the vibration of the diaphragm 8 from being transmitted to the muffler 2 and to introduce the vibration into the vehicle interior, the vibration plate 8 is connected to a damper member 9 which plays a buffer role.

이상과 같은 본 발명에 의하면 검댕이 배출량이 급증하는 엔진의 고속 고부하 운전시 배기가스 유속에 의한 부압 발생을 이용하여 외부로 부터 물을 끌어들여 안개상으로 배기파이프내에 분사하므로써 배기가스중의 검댕이 입자들이 물입자와 결합되어 분리되어지게 되며, 또 머플러내에 배압에 의해 진동하는 진동판을 설치하여 물입자에 의해 분리되지 않은 검댕이 입자들을 2차적으로 분해하여 분리시킨 후 검댕이 입자들이 제거된 배기가스를 외부로 배출하는 것에 의해서 디젤 차량의 고속 고부하 운전에서 다량 배출되는 매연(검댕이 입자)을 줄여 환경 문제 해결에 기여하게 되는 효과가 있다.According to the present invention as described above by using the negative pressure generated by the exhaust gas flow rate during the high speed high load operation of the engine soot soot emissions draw water from the outside by spraying in the exhaust pipe in the mist form soot particles in the exhaust gas It is combined with water particles to separate, and by installing a diaphragm vibrating by the back pressure in the muffler by secondary decomposition of the soot particles not separated by the water particles to separate and remove the exhaust gas from the soot particles to the outside By discharging, there is an effect that contributes to solving environmental problems by reducing soot (soot particles) emitted in a large amount at high speed and high load operation of a diesel vehicle.

Claims (6)

배기파이프와 머플러를 포함한 배기계에 있어서,In an exhaust system including an exhaust pipe and a muffler, 상기 배기파이프에 배기가스의 유속을 증대시키기 위하여 형성되는 좁은 단면적의 오리피스부와;An orifice having a narrow cross-sectional area formed in the exhaust pipe to increase the flow velocity of the exhaust gas; 상기 배기파이프의 오리피스부에 접속되어 배기가스 통과시 발생하는 부압에 의해 오리피스부로 흡입되어 안개상으로 분사되는 물을 이송하기 위한 통로인 물분사관; 및A water spray pipe connected to an orifice portion of the exhaust pipe and serving as a passage for transporting water sucked into the orifice portion by negative pressure generated when the exhaust gas passes and sprayed into the mist; And 상기 물 분사관에 공급하기 위한 물을 저장하는 물탱크;A water tank storing water for supplying the water injection pipe; 로 구성되어 있는 것을 특징으로 하는 디젤 차량의 매연 배출 저감장치.Smoke exhaust emission reduction device of a diesel vehicle, characterized in that consisting of. 제 1 항에 있어서,The method of claim 1, 상기 물분사관은 리어 플로어 패널에 러버 그로메트를 통해 지지 장착된 것을 특징으로 하는 디젤 차량의 매연 배출 저감장치.The water spray pipe is a smoke emission reduction device of a diesel vehicle, characterized in that the rear floor panel is supported by a rubber grommet. 제 1 항에 있어서,The method of claim 1, 상기 머플러에는 배기가스압에 의해 진동하는 진동판이 설치되는 것을 특징으로 하는 디젤 차량의 매연 배출 저감장치.The muffler emission reduction device of the diesel vehicle, characterized in that the muffler is installed on the muffler vibrating by the exhaust gas pressure. 제 4 항에 있어서,The method of claim 4, wherein 상기 진동판은 복수개인 것을 특징으로 하는 디젤 차량의 매연 배출 저감장치.The exhaust plate reducing device of the diesel vehicle, characterized in that the plurality of diaphragm. 제 4 항에 있어서,The method of claim 4, wherein 상기 진동판들은 댐퍼부재에 의해 연결된 것을 특징으로 하는 디젤 차량의 매연 배출 저감장치.And the diaphragm are connected by a damper member. 제 5 항에 있어서,The method of claim 5, 상기 머플러의 바닥에는 퇴적한 검댕이들을 배출하기 위한 드레인 플러그가 구비되어 있는 것을 특징으로 하는 디젤 차량의 매연 배출 저감장치.The exhaust plug reduction device of the diesel vehicle, characterized in that the bottom of the muffler is provided with a drain plug for discharging the accumulated soot.
KR10-2001-0059926A 2001-09-27 2001-09-27 Smoke discharge reducing apparatus of diesel engine KR100461447B1 (en)

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KR100461447B1 KR100461447B1 (en) 2004-12-14

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100475800B1 (en) * 2001-10-09 2005-03-10 현대자동차주식회사 Smoke discharge reducing apparatus of diesel engine
CN102797552A (en) * 2011-07-06 2012-11-28 摩尔动力(北京)技术股份有限公司 Jet-mixed supercharged engine
CN103174497A (en) * 2012-08-15 2013-06-26 苏州派格丽减排***有限公司 Reductant spraying control device in selective catalytic reduction (SCR) system

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JPS5654913A (en) * 1979-10-09 1981-05-15 Toyota Motor Corp Processing device for fine particle in exhaust gas from internal combustion engine
JPS57162629A (en) * 1981-03-30 1982-10-06 Tsuchiya Mfg Co Ltd Treatment of fine particle in waste gas
KR820001143Y1 (en) * 1981-04-27 1982-05-28 김선제 Apparatus for purifying exhaust gas for automobiles
JPS61155610A (en) * 1984-12-28 1986-07-15 Kawasaki Heavy Ind Ltd Exhaustion and purification device of internal combustion engine
JPH1162553A (en) * 1997-08-21 1999-03-05 Toyota Motor Corp Exhaust emission control device of internal combustion engine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100475800B1 (en) * 2001-10-09 2005-03-10 현대자동차주식회사 Smoke discharge reducing apparatus of diesel engine
CN102797552A (en) * 2011-07-06 2012-11-28 摩尔动力(北京)技术股份有限公司 Jet-mixed supercharged engine
CN103174497A (en) * 2012-08-15 2013-06-26 苏州派格丽减排***有限公司 Reductant spraying control device in selective catalytic reduction (SCR) system

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