KR20060058334A - Egr gas mixing device - Google Patents

Egr gas mixing device Download PDF

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KR20060058334A
KR20060058334A KR1020040097324A KR20040097324A KR20060058334A KR 20060058334 A KR20060058334 A KR 20060058334A KR 1020040097324 A KR1020040097324 A KR 1020040097324A KR 20040097324 A KR20040097324 A KR 20040097324A KR 20060058334 A KR20060058334 A KR 20060058334A
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South Korea
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egr
intake pipe
egr gas
gas
mixing
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KR1020040097324A
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Korean (ko)
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강표현
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현대자동차주식회사
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Priority to KR1020040097324A priority Critical patent/KR20060058334A/en
Publication of KR20060058334A publication Critical patent/KR20060058334A/en

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    • 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
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/65—Constructional details of EGR valves
    • F02M26/66—Lift valves, e.g. poppet valves
    • F02M26/68—Closing members; Valve seats; Flow passages
    • 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
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/41—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories characterised by the arrangement of the recirculation passage in relation to the engine, e.g. to cylinder heads, liners, spark plugs or manifolds; characterised by the arrangement of the recirculation passage in relation to specially adapted combustion chambers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust-Gas Circulating Devices (AREA)

Abstract

본 발명은 EGR 가스 혼합장치에 관한 것으로서, 특히 흡기관과 EGR 통로가 연결되는 부분에 EGR 가스가 흡기관의 전체 영역에 골고루 퍼지면서 공급되어 신기와 잘 혼합되도록 하는 EGR 혼합수단을 설치하므로서, 흡기관 내에서 EGR 가스와 신기가 균일하게 혼합되므로 인해 각 연소실로 유입되는 EGR 가스 농도를 일정하게 유지시키 시킬 수 있고, 이를 통해 각 기통별 연소특성 및 배출가스, NOx 배출량을 균일하게 제어할 수 있으며, 점점더 엄격해져가는 각국의 배기가스 규제를 만족시킬 수 있도록 한 EGR 가스 혼합장치에 관한 것이다.The present invention relates to an EGR gas mixing device, and in particular, the EGR mixing means for supplying the EGR gas evenly spreads over the entire area of the intake pipe to mix well with the new air in the portion where the intake pipe and the EGR passage are connected, Due to the uniform mixing of EGR gas and fresh air in the engine, the concentration of EGR gas flowing into each combustion chamber can be kept constant, and through this, it is possible to uniformly control combustion characteristics, emission gas, and NOx emissions for each cylinder. It also relates to an EGR gas mixing unit that is able to meet the increasingly stringent national emission regulations.

EGR 가스, 혼합수단, 몸체, 유로, 유동홀 EGR gas, mixing means, body, flow path, flow hole

Description

이지알 가스 혼합장치{EGR gas mixing device}EGR gas mixing device

도 1 은 본 발명의 EGR 가스 혼합장치를 보인 도면.1 is a view showing an EGR gas mixing device of the present invention.

도 2 는 본 발명의 EGR 가스 혼합장치가 설치된 상태를 보인 부분 단면도.2 is a partial cross-sectional view showing a state in which the EGR gas mixing device of the present invention is installed.

도 3 은 본 발명에 적용된 EGR 혼합수단을 보인 사시도.Figure 3 is a perspective view of the EGR mixing means applied to the present invention.

도 4 는 본 발명의 작동상태를 보인 도면.4 is a view showing an operating state of the present invention.

도 5 는 종래의 EGR 가스 혼합장치를 보인 도면.5 shows a conventional EGR gas mixing device.

도 6 은 종래 EGR 가스 혼합장치의 문제점을 설명하기 위한 도면.6 is a view for explaining the problem of the conventional EGR gas mixing device.

※ 도면의 주요부분에 대한 부호의 설명※ Explanation of code for main part of drawing

1 : 흡기다기관 2 : 흡기관1: Intake manifold 2: Intake pipe

3 : EGR 통로 10 : EGR 혼합수단3: EGR passage 10: EGR mixing means

11 : 몸체 12 : 유로11: body 12: euro

13 : 유동홀 14 : 밀폐부13 flow hole 14 sealed part

15 : 중간부15: middle part

본 발명은 EGR 가스 혼합장치에 관한 것으로서, 특히 흡기관 내에서 EGR 가 스와 신기가 균일하게 혼합되므로 인해 각 연소실로 유입되는 EGR 가스 농도를 일정하게 유지시키 시킬 수 있고, 이를 통해 각 기통별 연소특성 및 배출가스, NOx 배출량을 균일하게 제어할 수 있으며, 점점더 엄격해져가는 각국의 배기가스 규제를 만족시킬 수 있도록 한 EGR 가스 혼합장치에 관한 것이다.The present invention relates to an EGR gas mixing device, and in particular, since the EGR gas and the new gas are uniformly mixed in the intake pipe, the concentration of the EGR gas flowing into each combustion chamber can be kept constant, thereby allowing combustion characteristics for each cylinder. And an EGR gas mixing device capable of uniformly controlling the emission gas and the NOx emission and satisfying the increasingly stringent emission regulations of each country.

점점 더 강화되고 있는 자동차 배출가스에 대한 규제를 만족하기 위하여 여러가지 기술들이 제공되고 있다. Several technologies are being provided to meet increasingly tougher regulations on vehicle emissions.

이들 중의 하나가 EGR(배기가스재순환장치)를 적용하는 것이다.One of them is to apply EGR (Exhaust Gas Recirculation System).

EGR은 NOx의 배출을 제어하기 위해 연소가 끝난 배기가스의 일부를 연소실로 재유입시켜 실린더 내 연소가스의 온도상승을 억제하며, 공기과잉률을 낮추어 NOx의 생성을 억제하여 전체 NOx의 발생량을 줄이는 것이다.In order to control NOx emissions, EGR reintroduces a part of the exhaust gas into the combustion chamber to suppress the temperature rise of the combustion gas in the cylinder, and reduces the amount of NOx by reducing the excess air rate to suppress the generation of NOx. will be.

도 5 는 종래의 EGR 가스 혼합장치를 도시한 것으로서,5 shows a conventional EGR gas mixing device,

흡기다기관(1)의 일측에 외부로 부터 유입되는 신기가 유입되기 위한 흡기관(2)이 형성되어 있고, 상기 흡기관(2)의 일측으로 EGR 통로(3)가 연결되어 있다.An intake pipe 2 is formed on one side of the intake manifold 1 for introducing fresh air from the outside, and an EGR passage 3 is connected to one side of the intake pipe 2.

상기 EGR 통로(3)로는 미도시된 EGR쿨러 및 EGR 밸브에 의해 배기계로부터 재순환된 EGR가스가 유입되어 흡기관(2)으로 유입되는 신기와 혼합되어 엔진의 각 실린더로 공급되게되는 것이다.In the EGR passage (3), the EGR gas recycled from the exhaust system by the EGR cooler and the EGR valve (not shown) is introduced and mixed with the new air flowing into the intake pipe (2) to be supplied to each cylinder of the engine.

그러나, 종래의 EGR 가스 혼합장치는 도 6 에 도시된 바와같이 흡기관(2)의 일측으로 EGR 통로(3)가 연결된 구조이기 때문에 EGR 통로(3)로 공급된 EGR 가스가 흡기관(2)으로 유입되는 신기와 전체적으로 골고루 혼합되지 못하고, 흡기관(2)의 영역중 EGR통로(3)와 근접한 A영역은 EGR 농도가 짙어지고, EGR 통로(3)의 반대편인 B영역은 EGR 농도가 낮아지게되어 각 실린더로 공급되는 EGR가스의 농도가 균일해지지 못하게되며, 이에의해 유해배출가스 특히 NOx의 배출량이 균일하지 않아서 이를 제어하지 못하게되는 문제점이 있었다.However, since the conventional EGR gas mixing device has a structure in which the EGR passage 3 is connected to one side of the intake pipe 2 as shown in FIG. 6, the EGR gas supplied to the EGR passage 3 is supplied to the intake pipe 2. EGR concentration is high in the area A close to the EGR path 3 in the area of the intake pipe 2, and the area B on the opposite side of the EGR path 3 is low in EGR concentration. There is a problem that the concentration of EGR gas supplied to each cylinder is not uniform, thereby preventing the emission of harmful emissions, especially NOx, is not uniform, so that it cannot be controlled.

따라서, 상기 문제점을 해결하기 위한 본 발명은 흡기관과 EGR 통로가 연결되는 부분에 EGR 가스가 흡기관의 전체 영역에 골고루 퍼지면서 공급되어 신기와 잘 혼합되도록 하는 EGR 혼합수단을 설치하므로서, 흡기관 내에서 EGR 가스와 신기가 균일하게 혼합되므로 인해 각 연소실로 유입되는 EGR 가스 농도를 일정하게 유지시키 시킬 수 있고, 이를 통해 각 기통별 연소특성 및 배출가스, NOx 배출량을 균일하게 제어할 수 있으며, 점점더 엄격해져가는 각국의 배기가스 규제를 만족시킬 수 있도록 한 EGR 가스 혼합장치를 제공함을 목적으로 한다.Accordingly, the present invention for solving the above problems is provided by the EGR mixing means for supplying the EGR gas evenly spread throughout the entire area of the intake pipe in the portion where the intake pipe and the EGR passage is connected to mix well with the new air, Due to the uniform mixing of EGR gas and new air in the inside, the concentration of EGR gas flowing into each combustion chamber can be kept constant, and through this, it is possible to uniformly control combustion characteristics, emission gas, and NOx emissions for each cylinder. The aim is to provide an EGR gas mixing unit that can meet increasingly stringent national emission regulations.

상기 목적달성을 위한 본 발명은,The present invention for achieving the above object,

흡기관의 일측으로 EGR 통로가 연결되어 있는 이지알 가스 혼합장치에 있어서,In the EG gas mixing apparatus, the EGR passage is connected to one side of the intake pipe,

상기 EGR 통로가 연결되는 흡기관의 내부에 EGR가스가 흡기관의 전체 영역에 골고루 퍼지면서 공급되어 신기와 잘 혼합되도록 하는 EGR 혼합수단을 설치한 것을 특징으로 한다.EGR mixing means is provided in the inside of the intake pipe to which the EGR passage is connected to distribute the EGR gas evenly to the entire region of the intake pipe to mix well with the new air.

상기 EGR 혼합수단은, The EGR mixing means,

상기 흡기관 내부에 삽입되는 원통형의 몸체를 구비하되, 이 몸체의 중간부 에 유로의 형성을 위해 흡기관보다 직경이 작아지도록 한 중간부를 형성하고, 양측 끝단은 EGR가스의 유출을 방지하기 위하여 흡기관과 직경이 동일하게 형성한 밀폐부를 형성하며,A cylindrical body is inserted into the intake pipe, and an intermediate part of the body is formed to have a diameter smaller than that of the intake pipe in order to form a flow path, and both ends of the intake pipe prevent the outflow of the EGR gas. Forms a seal formed with the same diameter as the trachea,

상기 몸체의 외주연에는 다수의 유동홀을 방사상으로 형성한 것을 특징으로 한다.The outer periphery of the body is characterized in that a plurality of flow holes formed radially.

이하, 첨부된 도면 도 1 내지 도 4 를 참조하여 본 발명의 바람직한 실시예를 설명하면 다음과 같다.Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, FIGS. 1 to 4.

본 발명의 설명에 있어서 종래와 동일한 구성요소에 대해서는 동일부호 표기하여 중복설명을 피하기로 한다.In the description of the present invention, the same components as in the prior art will be denoted by the same reference numerals to avoid redundant description.

도면부호 10 은 EGR 통로(3)가 연결되는 흡기관(2)의 내부 공간에 삽입 설치되는 EGR 혼합수단을 나타낸다.Reference numeral 10 denotes an EGR mixing means inserted into an internal space of the intake pipe 2 to which the EGR passage 3 is connected.

상기 EGR 혼합수단(10)은 EGR 통로(3)로 유입된 EGR 가스가 흡기관(2)의 전체 영역에 골고루 퍼지도록 하여 신기와 골고루 혼합되도록 하는 기능을 갖는다.The EGR mixing means 10 has a function of allowing the EGR gas introduced into the EGR passage 3 to be evenly spread over the entire area of the intake pipe 2 so as to mix with the new.

EGR 혼합수단(10)은 도면에 도시된 바와같이 대략 원통형으로 형성된 몸체(11)를 구비하여 흡기관(2)의 내부에 삽입하되, 상기 몸체(11)의 중간부(15)는 흡기관(2)의 직경보다 작게하여 흡기관(2)과의 사이에 EGR가스가 유동되도록 하는 유로(12)가 형성되도록 하고, 상기 몸체(11)의 양측 끝단부에는 흡기관(2)과 동일한 크기의 직경을 갖는 밀폐부(14)를 형성하여 EGR가스가 유출되지 않도록 하였 다.The EGR mixing means 10 has a body 11 formed in a substantially cylindrical shape as shown in the drawing to be inserted into the intake pipe 2, the middle portion 15 of the body 11 is the intake pipe ( The diameter of 2) is smaller than the diameter of the inlet pipe (2) so that the flow path 12 for the EGR gas flow is formed, and both ends of the body 11 of the same size as the intake pipe (2) The sealing portion 14 having a diameter was formed to prevent the EGR gas from flowing out.

그리고 상기 몸체(11)의 외주연상에는 다수의 유동홀(13)을 방사상으로 형성하여 유로(12)를 통해 이동한 EGR가스가 전체적으로 형성되어 있는 유동홀(13)을 통해 흡기관(2) 내부로 공급될 수 있도록 하였다.In the outer periphery of the body 11, a plurality of flow holes 13 are formed radially and the inside of the intake pipe 2 through the flow holes 13 in which the EGR gas moved through the flow path 12 is formed as a whole. It can be supplied with.

상기 설명과같이 구성된 EGR 혼합수단(10)을 흡기관(2) 내부에 삽입하게되면, EGR통로(3)를 통해 공급된 EGR가스가 EGR 혼합수단(10)을 구성하는 각각의 유동홀(13)을 통해 도 4 와같이 흡기관(2)으로 공급됨에 따라 EGR 가스가 흡기관(2)으로 유입되는 신기와 균등하게 혼합되게된다.When the EGR mixing means 10 configured as described above is inserted into the intake pipe 2, each of the flow holes 13 in which the EGR gas supplied through the EGR passage 3 constitutes the EGR mixing means 10. As shown in FIG. 4, the EGR gas is uniformly mixed with the new air flowing into the intake pipe 2 as shown in FIG. 4.

이에의해 엔진의 각 실린더로 공급되는 EGR가스량이 균등해지는 효과를 기대할 수 있게되어 배출가스의 NOx량을 정밀하게 제어할 수 있게되는 것이다.As a result, the effect of equalizing the amount of EGR gas supplied to each cylinder of the engine can be expected to precisely control the amount of NOx of the exhaust gas.

이상에서 설명한 바와같이 본 발명은 흡기관과 EGR 통로가 연결되는 부분에 EGR 가스가 흡기관의 전체 영역에 골고루 퍼지면서 공급되어 신기와 잘 혼합되도록 하는 EGR 혼합수단을 설치하므로서, 흡기관 내에서 EGR 가스와 신기가 균일하게 혼합되므로 인해 각 연소실로 유입되는 EGR 가스 농도를 일정하게 유지시키 시킬 수 있고, 이를 통해 각 기통별 연소특성 및 배출가스, NOx 배출량을 균일하게 제어할 수 있으며, 점점더 엄격해져가는 각국의 배기가스 규제를 만족시킬 수 있도록 한 EGR 가스 혼합장치를 제공하는 효과를 기대할 수 있다.As described above, the present invention provides an EGR in the intake pipe by providing an EGR mixing means for supplying the EGR gas evenly to the entire area of the intake pipe and mixing well with the new air at the portion where the intake pipe and the EGR passage are connected. Due to the uniform mixing of gas and new air, the concentration of EGR gas flowing into each combustion chamber can be kept constant, and through this, it is possible to uniformly control combustion characteristics, emission gas, and NOx emission for each cylinder, and become increasingly strict. The effect of providing an EGR gas mixing device that can satisfy the exhaust gas regulation of each country is expected.

Claims (2)

흡기관(2)의 일측으로 EGR 통로(3)가 연결되어 있는 이지알 가스 혼합장치에 있어서,In the EG gas mixing apparatus in which the EGR passage 3 is connected to one side of the intake pipe 2, 상기 EGR 통로(3)가 연결되는 흡기관(2)의 내부에 EGR가스가 흡기관의 전체 영역에 골고루 퍼지면서 공급되어 신기와 잘 혼합되도록 하는 EGR 혼합수단(10)을 설치한 것을 특징으로 하는 이지알가스 혼합장치.EGR mixing means (10) is installed in the intake pipe (2) to which the EGR passage (3) is connected, so that the EGR gas is evenly distributed throughout the entire area of the intake pipe to mix well with the new air. Easy Algas Mixer. 제 1 항에 있어서, 상기 EGR 혼합수단(10)은, The method of claim 1, wherein the EGR mixing means 10, 상기 흡기관(2) 내부에 삽입되는 원통형의 몸체(11)를 구비하되, 이 몸체(11)의 중간부에 유로(12)의 형성을 위해 흡기관(2)보다 직경이 작아지도록 한 중간부(15)를 형성하고, 양측 끝단은 EGR가스의 유출을 방지하기 위하여 흡기관(2)과 직경이 동일하게 형성한 밀폐부(14)를 형성하며,An intermediate portion having a cylindrical body 11 inserted into the intake pipe 2, the diameter of which is smaller than that of the intake pipe 2 for the formation of the flow path 12 in the middle of the body 11. (15), and both ends form a closed portion (14) having the same diameter as the intake pipe (2) to prevent the outflow of EGR gas, 상기 몸체(11)의 외주연에는 다수의 유동홀(13)을 방사상으로 형성한 것을 특징으로 하는 이지알가스 혼합장치.Easy gas mixing apparatus, characterized in that the outer periphery of the body (11) formed a plurality of flow holes (13) radially.
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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100764864B1 (en) * 2006-07-06 2007-10-09 현대자동차주식회사 Dispersion absence of intelligence egrgas
US7568340B2 (en) * 2006-05-24 2009-08-04 Honeywell International, Inc. Exhaust gas recirculation mixer
WO2010059509A2 (en) * 2008-11-18 2010-05-27 Cummins Intellectual Properties, Inc. Apparatus and method for separating air compressor supply port from egr gas
US20110192383A1 (en) * 2010-02-08 2011-08-11 International Engine Intellectual Property Company Llc Intake air/egr mixing system configuration
US8056340B2 (en) * 2010-08-17 2011-11-15 Ford Global Technologies, Llc EGR mixer for high-boost engine systems
CN104653354A (en) * 2014-10-23 2015-05-27 成都耐尔特科技有限公司 EGR (exhaust gas recirculation) mixing device
CN105114160A (en) * 2015-07-29 2015-12-02 安徽江淮汽车股份有限公司 Catalytic conversion device and waste gas and air mixer thereof

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7568340B2 (en) * 2006-05-24 2009-08-04 Honeywell International, Inc. Exhaust gas recirculation mixer
KR100764864B1 (en) * 2006-07-06 2007-10-09 현대자동차주식회사 Dispersion absence of intelligence egrgas
WO2010059509A2 (en) * 2008-11-18 2010-05-27 Cummins Intellectual Properties, Inc. Apparatus and method for separating air compressor supply port from egr gas
WO2010059509A3 (en) * 2008-11-18 2010-08-05 Cummins Intellectual Properties, Inc. Apparatus and method for separating air compressor supply port from egr gas
US8096289B2 (en) 2008-11-18 2012-01-17 Cummins Intellectual Properties, Inc. Apparatus and method for separating air compressor supply port from the EGR gas
US20110192383A1 (en) * 2010-02-08 2011-08-11 International Engine Intellectual Property Company Llc Intake air/egr mixing system configuration
US8056340B2 (en) * 2010-08-17 2011-11-15 Ford Global Technologies, Llc EGR mixer for high-boost engine systems
CN104653354A (en) * 2014-10-23 2015-05-27 成都耐尔特科技有限公司 EGR (exhaust gas recirculation) mixing device
CN104653354B (en) * 2014-10-23 2017-01-04 成都耐尔特科技有限公司 EGR mixing arrangement
CN105114160A (en) * 2015-07-29 2015-12-02 安徽江淮汽车股份有限公司 Catalytic conversion device and waste gas and air mixer thereof

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