KR100476195B1 - Exhaust gas recirculation system for internal combustion engine - Google Patents
Exhaust gas recirculation system for internal combustion engine Download PDFInfo
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- KR100476195B1 KR100476195B1 KR10-2001-0080553A KR20010080553A KR100476195B1 KR 100476195 B1 KR100476195 B1 KR 100476195B1 KR 20010080553 A KR20010080553 A KR 20010080553A KR 100476195 B1 KR100476195 B1 KR 100476195B1
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- exhaust gas
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 20
- 230000003134 recirculating effect Effects 0.000 claims description 14
- 210000003746 feather Anatomy 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims 3
- 238000004904 shortening Methods 0.000 abstract description 6
- 230000004044 response Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 75
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 8
- 230000033228 biological regulation Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000003584 silencer Effects 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
Classifications
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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
- F02M26/13—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
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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
- F02M26/52—Systems for actuating EGR valves
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- 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)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
배기가스 재순환 루트를 최단 거리화하여 배기가스가 흡기까지 도달하는 시간을 단축시키고, 기통별 균일한 배기가스 재순환율을 유지함으로써, 응답성 향상과 배기가스내의 유해성분을 저감시킬 수 있는 배기가스 재순환 시스템을 제공할 목적으로;By shortening the exhaust gas recirculation route to shorten the time for the exhaust gas to reach intake and maintaining a uniform exhaust gas recirculation rate for each cylinder, the exhaust gas recirculation can improve response and reduce harmful components in the exhaust gas. For the purpose of providing a system;
연소실로부터 배출되는 배기가스의 일부가 유입될 수 있도록 실린더 헤드의 배기포트 하류단부에 형성되는 배기가스 수집부와;An exhaust gas collecting part formed at a downstream end of the exhaust port of the cylinder head so that a part of the exhaust gas discharged from the combustion chamber is introduced;
상기 배기가스 유입부로부터 공급되는 재순환 가스가 흡기계통으로 유입될 수 있도록 흡기포트 입구부에 형성되는 배기가스 토출부와;An exhaust gas discharge part formed at an inlet port inlet so that recirculated gas supplied from the exhaust gas inlet part flows into the intake tube;
상기 배기가스 유입부와 토출부를 연결하면서 실린더 헤드내에 형성되는 재순환 가스 루트와;A recycle gas route formed in a cylinder head while connecting said exhaust gas inlet and outlet;
상기 재순환 가스 루트의 일정 위치에 배치되어 운전조건에 따라 재순환 가스 루트를 선택적으로 개폐하는 EGR 밸브수단을 포함하여 이루어지는 내연기관의 배기가스 재순환 시스템을 제공한다.It provides an exhaust gas recirculation system of an internal combustion engine, comprising an EGR valve means disposed at a predetermined position of the recirculation gas route to selectively open and close the recirculation gas route according to operating conditions.
Description
본 발명은 배기가스 재순환 루트를 실린더 헤드에 직접 형성함으로써, 배기가스 재순환 루트를 최단 거리화하여 배기가스가 흡기까지 도달하는 시간을 단축시켜 이에 따른 제반 효과를 얻을 수 있는 내연기관의 배기가스 재순환시스템에 관한 것이다.The present invention provides an exhaust gas recirculation system of an internal combustion engine that forms an exhaust gas recirculation route directly to a cylinder head, thereby shortening the time for exhaust gas to reach intake by shortening the exhaust gas recirculation route to obtain various effects. It is about.
예컨대, 자동차 배기가스는 대기오염의 주원인으로 지목 받게 되면서 공장에서 배출되는 매연, 유해 가스와 함께 엄격한 규제를 받고 있으며, 특히 북미 선진국에서는 자동차의 배출가스 규제 법규를 엄격하게 정하여 이에 적합한 자동차만 생산하거나 판매하도록 허가하고 있다. For example, automobile exhaust gas is considered to be the main cause of air pollution, and is subject to strict regulations along with fumes and harmful gases emitted from factories.In particular, North American advanced countries strictly regulate automobile emission regulations to produce only automobiles Licensed to sell.
이에 따라 각 자동차 생산 메이커에서는 배기가스의 배출을 최소화하면서 연비를 향상시킬 수 있는 엔진을 개발하고 있으며, 이에 부응하는 기술적 수단의 일예로 배기가스중에 포함되어 있는 질소 산화물(NOx)을 감소시키는 수단으로 배가가스 일부를 흡기계통에 다시 유입시켜 혼합기가 연소될 때 최고 온도를 낮추어 질소 산화물의 생성량을 적게하는 EGR 시스템을 적용하고 있다.Accordingly, each automobile manufacturer is developing an engine that can improve fuel efficiency while minimizing the emission of exhaust gas, and as an example of a technical means to reduce the nitrogen oxides (NOx) contained in the exhaust gas. The EGR system uses a portion of the doubling gas back into the intake system to lower the maximum temperature when the mixer is burned to reduce the production of nitrogen oxides.
이러한 EGR 시스템이 적용되는 디젤 엔진의 흡배기 계통을 살펴보면, 도 1에서와 같이, 흡기는 에어 클리너(2), 흡기 플로우 미터(4) 터보 챠져의 컴프레셔 (6), 인터쿨러(8)를 통해 엔진(10)의 연소실로 유입될 수 있도록 구성되며, 연소실에서 연소된 배기가스는 터보 챠져의 터빈(12), 촉매(14), 소음기(16)를 통해 배출되는 구성을 갖는다.Referring to the intake and exhaust system of the diesel engine to which the EGR system is applied, as shown in FIG. 1, the intake air is provided through the air cleaner 2, the intake flow meter 4, the compressor 6 of the turbocharger, and the intercooler 8. 10 is configured to be introduced into the combustion chamber, the exhaust gas burned in the combustion chamber has a configuration that is discharged through the turbine 12, the catalyst 14, the silencer 16 of the turbocharger.
이와 같은 엔진의 흡배기 계통에 있어서 EGR 시스템은 상기 인터쿨러(8)의 하루 부분과 배기 계통의 초입부 사이에 EGR 라인(18)를 형성하고, 이의 EGR 라인(18)상에 EGR 밸브(20)를 배치하여 미도시한 ECU(엔진 제어유닛)에서 엔진의 운전 조건에 따라 상기 EGR 밸브(20)를 제어하여 배기가스의 일부가 연소실로 재순환될 수 있도록 구성되어 있다.In such an intake and exhaust system of the engine, the EGR system forms an EGR line 18 between one part of the intercooler 8 and the beginning of the exhaust system, and the EGR valve 20 is placed on its EGR line 18. The ECU (engine control unit) (not shown) is arranged to control the EGR valve 20 in accordance with the operating conditions of the engine so that a part of the exhaust gas can be recycled to the combustion chamber.
그러나 상기와 같은 EGR 시스템에 있어서는 흡기관에서 재순환 배기가스가 흡입 공기와 섞이기는 하지만 흡기관에서 가까운 실린더의 연소실과 멀리 떨어져 있는 실린더의 연소실간의 거리 차이에 의하여 재순환 가스의 유입이 기통간에 커다란 차이가 발생된다는 문제점을 내포하고 있다.However, in the above EGR system, although the recycle exhaust gas is mixed with the intake air in the intake pipe, the inflow of the recycle gas is significantly different between the cylinders due to the difference in the distance between the combustion chamber of the cylinder close to the intake pipe and the cylinder of the distant cylinder. There is a problem that occurs.
또한, 재순환 가스의 재순환 루트가 길어 가감속 EGR 응답성이 낮아 실제 주행 및 배기가스 규제 모드 운전에서 빠른 시간내에 재순환 가스가 섞여 연소실로 들어가지 못한다는 문제점을 내포하고 있다.In addition, the recycling route of the recycle gas is long, and the acceleration / deceleration EGR responsiveness is low, so that the recycle gas does not enter the combustion chamber within a short time in actual driving and exhaust gas regulation mode operation.
따라서 본 발명은 상기와 같은 문제점을 해결하기 위하여 발명된 것으로서, 본 발명의 목적은 배기가스 재순환 루트를 실린더 헤드에 직접 형성함으로써, 배기가스 재순환 루트를 최단 거리화하여 배기가스가 흡기까지 도달하는 시간을 단축시켜 응답성 향상과 배기가스내의 유해성분을 저감시킬 수 있는 배기가스 재순환 시스템을 제공함에 있다.Accordingly, the present invention has been invented to solve the above problems, and an object of the present invention is to form an exhaust gas recirculation route directly on the cylinder head, thereby shortening the exhaust gas recirculation route to reach the intake air. The present invention provides an exhaust gas recirculation system capable of shortening the response and improving the harmful components in the exhaust gas.
그리고 각 실린더의 흡기포트로 재순환 가스가 유입됨으로써, 기통별 균일한 배기가스 재순환율을 유지할 수 있으며, 엔진 외부에 배기가스의 재순환을 위한 별도의 파이프를 설치할 필요가 없는 배기가스 재순환 시스템을 제공함에 있다.In addition, since the recirculation gas is introduced into the intake port of each cylinder, it is possible to maintain a uniform exhaust gas recirculation rate for each cylinder, and to provide an exhaust gas recirculation system without installing a separate pipe for recirculating the exhaust gas outside the engine. have.
이를 실현하기 위하여 본 발명은, 배기가스 일부를 흡기계통으로 재순환시켜 연소토록 하는 내연기관의 배기가스 재순환 시스템에 있어서, In order to realize this, the present invention is directed to an exhaust gas recirculation system of an internal combustion engine that recirculates a portion of the exhaust gas to an intake cylinder to be combusted.
연소실로부터 배출되는 배기가스의 일부가 유입될 수 있도록 실린더 헤드의 배기포트 하류단부에 형성되는 배기가스 수집부와;An exhaust gas collecting part formed at a downstream end of the exhaust port of the cylinder head so that a part of the exhaust gas discharged from the combustion chamber is introduced;
상기 배기가스 유입부로부터 공급되는 재순환 가스가 흡기계통으로 유입될 수 있도록 흡기포트 입구부에 형성되는 배기가스 토출부와;An exhaust gas discharge part formed at an inlet port inlet so that recirculated gas supplied from the exhaust gas inlet part flows into the intake tube;
상기 배기가스 유입부와 토출부를 연결하면서 실린더 헤드내에 형성되는 재순환 가스 루트와;A recycle gas route formed in a cylinder head while connecting said exhaust gas inlet and outlet;
상기 재순환 가스 루트의 일정 위치에 배치되어 운전조건에 따라 재순환 가스 루트를 선택적으로 개폐하는 EGR 밸브수단을 포함하여 이루어지는 내연기관의 배기가스 재순환 시스템을 제공한다. It provides an exhaust gas recirculation system of an internal combustion engine, comprising an EGR valve means disposed at a predetermined position of the recirculation gas route to selectively open and close the recirculation gas route according to operating conditions.
이하, 본 발명의 바람직한 실시예를 첨부한 도면에 의거하여 상세히 설명하면 다음과 같다.Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail.
도 2 및 도 3은 본 발명의 적용 부위를 설명하기 위한 흡,배기 포트와 밸브 트레인 부분의 발췌 사시도 및 실린더 헤드의 개략적인 단면도로서, 배기포트(100)의 하류단부에 재순환 가스 수집부(102)를 형성하고, 흡기포트(104)의 입구부에 재순환 가스 토출부(106)를 형성하되, 이의 수집부(102)와 토출부(106) 사이를 연통시키는 재순환가스 루트(108)를 실린더 헤드(110)내에 형성하였다.2 and 3 are schematic cross-sectional views of an intake and exhaust port and a valve train portion for explaining the application of the present invention, and a schematic cross-sectional view of the cylinder head, and the recirculating gas collecting unit 102 at the downstream end of the exhaust port 100. And a recirculating gas discharge section 106 at the inlet of the intake port 104, wherein the recirculating gas route 108 for communicating between its collection section 102 and the discharge section 106 has a cylinder head. Formed in (110).
그리고 상기 재순환가스 루트(108)의 일정 부분에는 이의 루트(108)를 선택적으로 개폐할 수 있는 EGR 밸브수단(112)를 배치하였다.And a certain portion of the recirculation gas route 108 is disposed EGR valve means 112 that can selectively open and close its route (108).
상기 재순환 가스 수집부(102)는 도 4의(A)(B)에서 도시한 바와 같이, 배기포트(100)의 하류단부 둘레에 일정깊이의 둘레홈(114)을 형성하고, 그 내경부에는 안내깃(116)을 형성하여 배출되는 배기가스가 상기 안내깃(116)에 의하여 상기 둘레홈(114)으로 유도될 수 있도록 하였다.The recirculating gas collecting unit 102 forms a circumferential groove 114 having a predetermined depth around the downstream end of the exhaust port 100, as shown in FIG. The guide feather 116 was formed to allow exhaust gas to be discharged to the circumferential groove 114 by the guide feather 116.
물론 상기 둘레홈(114)은 재순환 가스 루트(108)와 연통되며, 상기 안내깃 (116)은 배기가스의 흐름을 방해하지 않도록 배기포트(100)와 동일면으로 형성하는 것이 바람직하며, 상기 재순환 가스 루트(108)는 실린더 헤드내에 형성되어 있는 미도시한 워터 자켓을 관통하거나 근접되게 하여 재순환 가스의 냉각에 도움을 줄 수 있도록 하는 것이 바람직하다. Of course, the circumferential groove 114 is in communication with the recycle gas route 108, the guide feather 116 is preferably formed in the same plane as the exhaust port 100 so as not to disturb the flow of the exhaust gas, the recycle gas The route 108 preferably penetrates or approaches a water jacket, not shown, formed in the cylinder head to aid in cooling the recycle gas.
그리고 재순환 가스 토출부(106)는 도 5의 (A)(B)에 도시한 바와 같이, 흡기포트(104)의 입구부에 형성되는데, 상기 흡기포트(104)의 단부에서 연소실측으로 약간 들어온 위치에 상기 재순환 가스 루트(108)와 연통되는 둘레홈(118)을 형성하고, 이 둘레홈(118)의 연소실측 부분이 개구되도록 안내깃(120)을 배치하였다. And the recycle gas discharge part 106 is formed in the inlet part of the intake port 104, as shown in Fig. 5 (A) (B), the position slightly entered into the combustion chamber side from the end of the intake port 104 A circumferential groove 118 is formed in communication with the recirculating gas route 108 at the circumferential groove, and the guide vane 120 is disposed to open the combustion chamber side of the circumferential groove 118.
또한, 상기 흡기포트(104)는 엔진의 설계상 다양한 형태를 취할 수 있으나, 본 발명에서는 연소실측으로 갈수록 단면적이 작아지는 형태로 도시하였으며, 또한, 연소 성능을 향상시키기 위하여 2개의 포트(122)(124)를 갖는 것으로 도시하고 있다.In addition, the intake port 104 may take various forms due to the design of the engine, but in the present invention, the cross-sectional area of the intake port 104 decreases toward the combustion chamber side, and the two ports 122 ( 124).
이에 따라 2개의 흡기포트(122)(124)의 입구부에는 각각에 상기 둘레홈(118)이 형성되고, 이의 둘레홈(118)은 양 포트(122)(124)를 구획하는 격벽(126) 부분에서 연통됨과 동시에 재순환 가스 루트(108)와 연통될 수 있도록 하였다.Accordingly, the circumferential grooves 118 are formed at the inlets of the two intake ports 122 and 124, respectively, and the circumferential grooves 118 are partition walls 126 partitioning both ports 122 and 124. And in communication with the recirculating gas route 108.
물론 상기 재순환 가스 루트(108)가 반드시 격벽(126)부분에서 연통될 필요는 없으나, 재순환 가스의 균등 분할을 위해서는 이의 구조가 바람직할 것이다.Of course, the recycle gas route 108 does not necessarily communicate with the partition wall 126, but its structure may be preferable for the even division of the recycle gas.
그리고 상기와 같은 배기가스 재순환 시스템에 있어서는 흡기계통의 부압에 의하여 배기계통의 배기가스가 유입되는 것인 바, 배기포트(100)와 흡기포트(104)가 재순환 가스 루트(108)에 의하여 연통되어 있으면, 배기가스의 재순환에는 별다른 지장은 없으나, 보다 나은 성능을 위하여 상기의 안내깃(116)(120)을 배기포트 (100) 및 흡기포트(104)의 둘레홈(114)(118)의 내경부에 적용한 예를 도시한 것이므로, 반드시 이의 구조에 한정되는 것은 아니다.In the exhaust gas recirculation system as described above, the exhaust gas of the exhaust system is introduced by the negative pressure of the intake system, so that the exhaust port 100 and the intake port 104 communicate with the recycle gas route 108. If there is, there is no problem in the recirculation of the exhaust gas, but for better performance, the guide feathers 116 and 120 are formed inside the circumferential grooves 114 and 118 of the exhaust port 100 and the intake port 104. Since the example applied to the neck part is shown, it is not necessarily limited to the structure.
상기와 같은 구성은 엔진의 각 실린더마다 적용되는 것이며, 필요에 따라 상기 재순환 가스 루트(108)를 개폐하여 줄 수 있는 EGR 밸브수단은 도 6에서와 같이, 각 실린더의 재순환 가스 루트(108)에 배치된 각각의 밸브체(130)가 하나의 구동축(132)에 연결되어 있으며, 이의 구동축(132)은 미도시한 엔진 제어유닛(ECU)에 의하여 제어되는 제어모터(134)에 의하여 구동된다.The configuration as described above is applied to each cylinder of the engine, the EGR valve means for opening and closing the recirculation gas route 108 as needed, as shown in Figure 6, to the recirculation gas route 108 of each cylinder Each valve body 130 disposed is connected to one drive shaft 132, and the drive shaft 132 is driven by a control motor 134 controlled by an engine control unit (ECU) not shown.
상기 밸브체(130)는 도 7에서 도시한바와 같이, 재순환 가스 루트(108)의 일정 위치에 내장되며, 하나의 원통형 밀폐 구조로 이루어지되, 상호 일정각도를 두고 입구(136)와 출구(138)가 형성되어 있다. As shown in FIG. 7, the valve body 130 is embedded at a predetermined position of the recirculating gas route 108, and has a cylindrical sealing structure, and has an inlet 136 and an outlet 138 at a predetermined angle to each other. ) Is formed.
즉, 상기 입구(136)가 수직선을 기준으로 흡기포트(104)측으로 치우치면, 재순환 가스 루트(108)가 폐쇄되고, 도 8에서와 같이, 상기 입구(136)가 수직선을 기준으로 배기포트(104)측으로 향하면, 입구(136)가 열리면서 재순환 가스 루트(108)를 개방시켜 흡기포트(104)의 부압에 의하여 배기포트(100)의 배기가스를 유입할 수 있게 된다.That is, when the inlet 136 is biased toward the intake port 104 side with respect to the vertical line, the recirculating gas route 108 is closed, and as shown in FIG. 8, the inlet 136 has the exhaust port 104 based on the vertical line. Towards the side side, the inlet 136 is opened to open the recycle gas route 108 so that the exhaust gas of the exhaust port 100 can be introduced by the negative pressure of the intake port 104.
물론, 이때에는 상기 입구(136) 부분이 어느 위치에 있느냐에 따라 개구면적이 달라짐으로써, 재순환 가스의 유입량이 조절되는데, 이의 조절은 엔진의 운전 조건에 따른 엔진 제어유닛(ECU)의 제어에 의한 제어모터(134) 구동에 따라 결정된다.Of course, at this time, the opening area varies according to which position the inlet 136 is located, so that the inflow amount of the recirculating gas is adjusted, and the adjustment thereof is performed by the control of the engine control unit ECU according to the operating conditions of the engine. It is determined according to the driving of the control motor 134.
상기에서 밸브체(130)의 형상을 원통형 밀폐구조로 설명하고 있으나, 이에 한정되는 것은 아니고, 밸브체의 회전 각도에 따라 그 개구면적의 가변되는 구조이면 만족한다.Although the shape of the valve body 130 has been described as a cylindrical sealed structure in the above, the present invention is not limited thereto, and the valve body 130 may have a structure in which the opening area thereof is changed according to the rotation angle of the valve body.
이상에서와 같이 본 발명의 배기가스 재순환 시스템은 재순환 가스 루트를 실린더 헤드에 직접 형성함으로써, 배기가스 재순환 루트를 최단 거리화하여 배기가스가 흡기까지 도달하는 시간을 단축시켜 응답성 향상과 배기가스내의 유해성분을 저감시킬 수 있게 된다.As described above, the exhaust gas recirculation system of the present invention forms a recirculation gas route directly to the cylinder head, thereby shortening the exhaust gas recirculation route to shorten the time for the exhaust gas to reach intake, thereby improving response and improving It is possible to reduce harmful components.
또한, 각 실린더의 흡기포트 마다 재순환 가스가 유입됨으로써, 기통별 균일한 배기가스 재순환율을 유지할 수 있으며, 엔진 외부에 배기가스의 재순환을 위한 별도의 파이프를 설치할 필요가 없게된다.In addition, the recirculation gas is introduced into each intake port of each cylinder, thereby maintaining a uniform exhaust gas recirculation rate for each cylinder, and eliminating the need for a separate pipe for recirculating the exhaust gas outside the engine.
그리고 배기가스 재순환 루트가 실린더 헤드의 워터자켓에 이웃하여 통과하므로 내기가스의 냉각을 용이하게 할 수 있는 발명인 것이다.And since the exhaust gas recirculation route passes adjacent to the water jacket of the cylinder head is an invention that can facilitate the cooling of the bet gas.
도 1은 일반적인 배기가스 재순환 시스템의 계통도.1 is a system diagram of a typical exhaust gas recirculation system.
도 2는 본 발명에 의한 적용 부위를 설명하기 위한 흡배기 포트와 밸브 트레인 부분의 발췌 사시도.2 is an exploded perspective view of the intake and exhaust ports and the valve train portion for explaining the application site according to the present invention.
도 3은 본 발명의 배기가스 재순환 시스템의 루트를 나타낸 실린더 헤드의 개략적인 단면도.3 is a schematic cross-sectional view of a cylinder head showing the route of the exhaust gas recirculation system of the present invention.
도 4는 배기가스 유입 부분을 나타낸 도면으로서,4 is a view showing an exhaust gas inlet portion;
(A)는 배기포트 부분의 일부 발췌도. (B)는 (A)의 Ⅰ-Ⅰ선 단면도. (A) is an excerpt of a part of the exhaust port part. (B) is sectional drawing in the II line of (A).
도 5는 재순환 가스의 출구 부분을 나타낸 도면으로서,5 is a view showing an outlet portion of the recycle gas,
(A)는 흡기포트 부분의 일부 발췌도. (B)는 (A) 부분의 Ⅱ-Ⅱ선 단면도. (A) is an excerpt of a part of an intake port part. (B) is sectional drawing of the II-II line | wire of the (A) part.
도 6은 본 발명에 적용되는 밸브수단의 구성도.Figure 6 is a block diagram of a valve means applied to the present invention.
도 7은 밸브의 배치 상태를 보인도.Figure 7 shows the arrangement of the valve.
도 8은 도 7에 의한 밸브의 작동 상태도이다.8 is an operational state diagram of the valve according to FIG.
Claims (5)
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| KR10-2001-0080553A KR100476195B1 (en) | 2001-12-18 | 2001-12-18 | Exhaust gas recirculation system for internal combustion engine |
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| JPS5129125U (en) * | 1974-08-23 | 1976-03-02 | ||
| JPS54102416A (en) * | 1978-01-30 | 1979-08-11 | Nissan Motor Co Ltd | Lead-out port construction for exhaust gas in return- flow system of exhaust gas |
| JPH0240961U (en) * | 1988-09-13 | 1990-03-20 | ||
| JPH0447155A (en) * | 1990-06-13 | 1992-02-17 | Hino Motors Ltd | Electronic control device for exhaust gas recirculation |
| JPH0463957A (en) * | 1990-07-02 | 1992-02-28 | Nissan Motor Co Ltd | Exhaust gas recirculating device for internal combustion engine |
| JPH05312108A (en) * | 1991-11-18 | 1993-11-22 | Inst Fr Petrole | Process and device for favoring fuel vaporization in internal combustion engine |
| JPH06101577A (en) * | 1992-09-17 | 1994-04-12 | Toyota Motor Corp | Exhaust gas recirculation device of 2-cycle internal combustion engine |
| JPH07253054A (en) * | 1994-03-15 | 1995-10-03 | Kubota Corp | Exhaust gas recirculation system for engine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5129125U (en) * | 1974-08-23 | 1976-03-02 | ||
| JPS54102416A (en) * | 1978-01-30 | 1979-08-11 | Nissan Motor Co Ltd | Lead-out port construction for exhaust gas in return- flow system of exhaust gas |
| JPH0240961U (en) * | 1988-09-13 | 1990-03-20 | ||
| JPH0447155A (en) * | 1990-06-13 | 1992-02-17 | Hino Motors Ltd | Electronic control device for exhaust gas recirculation |
| JPH0463957A (en) * | 1990-07-02 | 1992-02-28 | Nissan Motor Co Ltd | Exhaust gas recirculating device for internal combustion engine |
| JPH05312108A (en) * | 1991-11-18 | 1993-11-22 | Inst Fr Petrole | Process and device for favoring fuel vaporization in internal combustion engine |
| JPH06101577A (en) * | 1992-09-17 | 1994-04-12 | Toyota Motor Corp | Exhaust gas recirculation device of 2-cycle internal combustion engine |
| JPH07253054A (en) * | 1994-03-15 | 1995-10-03 | Kubota Corp | Exhaust gas recirculation system for engine |
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