KR100293987B1 - Apparatus for generating swirl flow for internal combustion engine - Google Patents

Apparatus for generating swirl flow for internal combustion engine Download PDF

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Publication number
KR100293987B1
KR100293987B1 KR1019970062666A KR19970062666A KR100293987B1 KR 100293987 B1 KR100293987 B1 KR 100293987B1 KR 1019970062666 A KR1019970062666 A KR 1019970062666A KR 19970062666 A KR19970062666 A KR 19970062666A KR 100293987 B1 KR100293987 B1 KR 100293987B1
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blow
combustion chamber
internal combustion
gas passage
combustion engine
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KR1019970062666A
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Korean (ko)
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KR19990041974A (en
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김규완
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이계안
현대자동차주식회사
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B23/00—Other engines characterised by special shape or construction of combustion chambers to improve operation
    • F02B23/02—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition
    • F02B23/06—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F3/00—Pistons 
    • F02F3/26—Pistons  having combustion chamber in piston head
    • 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

Abstract

PURPOSE: An apparatus for generating a swirl flow for an internal combustion engine is provided to increase the swirl flow in a mixer by supplying blow-by gas into a combustion chamber. CONSTITUTION: A piston(3) is inserted into a cylinder bore(2) formed in a cylinder block(1) and a cylinder head(4) is coupled to the cylinder block(1), thereby forming a combustion chamber(5). At least one blow-by gas passage(7) is formed around the cylinder bore(2) of the cylinder block(1). One end of the blow-by gas passage(7) is connected to a crank case(6) and the other end of the blow-by gas passage(7) is connected to the combustion chamber(5). A valve chamber(8) having a valve seat therein is formed adjacent to an opening of the blow-by gas passage(7). A helical protrusion is formed at the opening so as to easily create a swirl flow. An on/off valve(9) rested in the valve chamber(8) is operated by a pressure of the combustion chamber(5).

Description

내연기관의 와류 생성장치Vortex generator of internal combustion engine

본 발명은 내연기관의 와류 생성장치에 관한 것이며, 상세하게는 블로바이가스를 이용하여 연소실 내의 와류 생성을 중대한 내연기관의 와류 생성장치에 관한 것이다.The present invention relates to a vortex generating apparatus of an internal combustion engine, and more particularly, to a vortex generating apparatus of an internal combustion engine which is important for vortex generation in a combustion chamber using blow-by gas.

왕복동 내연기관에 있어서, 연소효율을 개선하여 연비를 개선하고, 출력을 향상하며, 배기유해성분의 저감을 이루기 위하여서는 연소실 내의 와류 생성을 증대하는 것이 중요하며, 와류 생성를 증대하면 연소가 빠르게 되어 연소시간을 단축하므로서 상기한 연소효율이 개선되는 것이다.In reciprocating internal combustion engines, it is important to increase the vortex generation in the combustion chamber in order to improve the fuel efficiency by improving the combustion efficiency, improve the output, and reduce the exhaust harmful components. By shortening the time, the above combustion efficiency is improved.

연소초기에 와류(난류) 생성을 증진하는 방법으로서는 흡입공기의 스월을 강연소초기에 와류(난류) 생성을 증진하는 방법으로서는 흡입공기의 스월을 강화하는 방법, 스퀴시(sguish)를 강화하는 방법, 흡입공기의 스월과 스퀴시를 조합한 것이 알려지고 있다.Swirl of intake air is used to improve the generation of vortex (turbulence) in the early stage of combustion. Swirl of intake air is enhanced as a method of promoting vortex (turbulence) generation in the early stage of combustion. It is known that the combination of the swirl and the squishy of the intake air.

상기한 흡입공기의 스월을 강화하는 방법은 흡입혼합기에 스월을 발생하는 기구 예컨대 슈라우드 부설 흡기밸브 또는 흡기도관에 헬리컬 포트 등을 구비하여 흡입시에 스월을 생성하고, 압축 중에 잔류한 스월에 의하여 와류를 생성하는 것이다.The method of reinforcing the swirl of the intake air is provided with a mechanism for generating a swirl in the intake mixer, for example, a shroud laying intake valve or a helical port in the intake pipe, to generate a swirl during intake, and to swirl by the swirl remaining during compression. To generate.

상기한 스퀴시를 강화하는 방법은 피스톤과 실리더 헤드로 구성된 연소실의 일부에 요부를 설치하여 피스통이 상승한 상사점 전에 강한 스퀴시를 일으키도록 한 것이다.The method of reinforcing the squish is to install a recess in a part of the combustion chamber composed of a piston and a cylinder head so as to generate a strong squish before the top dead center where the piece cylinder is raised.

본 발명은 와류 생성방법과는 전혀 다른 블로바이 가스를 연소실에 공급하여 혼합기의 와류 생성을 증진하는 내연기관의 와류 생성장치를 제공하는 것을 목적으로 한다.An object of the present invention is to provide a vortex generating apparatus of an internal combustion engine which supplies a blow-by gas which is completely different from the vortex generating method to the combustion chamber to promote vortex generation of the mixer.

본 발명은 상기한 목적을 달성하기 위하여, 실린더 블록의 실린더 보어에 피스톤을 삽입하고, 실린더 블록에 실린더 헤드를 결합하여 연소실을 형성한 것에 있어서, 상기 실린더 블록의 실린더 보어 주위에 일단은 크랭크 케이스에 타단은 연소실에 연통되는 블로바이 가스통로를 형성하고, 상기 통로의 출구측에 개폐밸브를 설치하여서 된 것이다.In order to achieve the above object, the present invention provides a combustion chamber formed by inserting a piston into a cylinder bore of a cylinder block and coupling a cylinder head to the cylinder block. The other end forms a blow-by gas passage communicating with the combustion chamber, and an on-off valve is provided on the outlet side of the passage.

도1은 본 발명의 실시예의 단면도.1 is a cross-sectional view of an embodiment of the present invention.

도2는 본 발명의 실시예의 제어밸브의 요부 확대도.Figure 2 is an enlarged view of the main portion of the control valve of the embodiment of the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1 : 실린던 블록 3 : 연소실1: cylinder block 3: combustion chamber

6 : 크랭크 케이스 7 : 블로바이 가스통로6: crank case 7: blow-by gas passage

7' : 개구 8 : 밸브실7 ': opening 8: valve chamber

9 : 개폐밸브9: on-off valve

본 발명은 도1 및 도2에 도시한 바와같이 실린더 블록(1)에 형성된 실린더 보이(2) 내에 피스톤(3)을 삽입하고, 실린더 블록(1)에 실린더 헤드(4)를 결합하여 연소실(5)을 형성한 것이다.1 and 2, the piston 3 is inserted into the cylinder boy 2 formed in the cylinder block 1, and the cylinder head 4 is coupled to the cylinder block 1 so that the combustion chamber ( 5) is formed.

상기 실린더 블록(1)의 실린더 보이(2) 주위에 일단은 크랭크 케이스(6)에 타단은 연소실(5)에 연통되는 적어도 1개 이상의 블로바이 가스통로(7)를 형성하고, 상기 통로(7)의 개구(7′)부근에 밸브 시트(8′)가 형성된 밸브실(8)을 형성하여 저면에 유입공(10)과 측면에 배출공(10′)을 형성한 개폐밸브(9)를 코일 스프링(11)과 함께 내장하여서 된 것이다.At least one blow-by gas passage 7 is formed around the cylinder boy 2 of the cylinder block 1, one end of which is in communication with the crankcase 6 and the other of which is connected to the combustion chamber 5, and the passage 7 The valve chamber 8 formed with the valve seat 8 'is formed near the opening 7' of the valve), and the opening / closing valve 9 having the inlet hole 10 at the bottom and the outlet hole 10 'at the side is formed. It is built with the coil spring (11).

상기한 블로바이 가스통로(7)의 개구(7′)부위는 블로바이 가스가 연소실에 공급될 때 난류를 일르키는 것을 양호하게 하기 위하여 출구의 내벽에 헬리컬상 돌기를 형성하는 것이 바람직하며, 그 개구방향도 피스톤의 중심에서 일측으로 편심되도록 개구되게 형성하는 것이 바람직하다.Preferably, the opening 7 'portion of the blow-by gas passage 7 forms a helical protrusion on the inner wall of the outlet to make it preferable to cause turbulence when the blow-by gas is supplied to the combustion chamber. The opening direction is also preferably formed so as to be eccentric to one side from the center of the piston.

상기한 개폐밸브(9)는 연소실(3)의 압력에 의하여 개폐된다.The on-off valve 9 is opened and closed by the pressure of the combustion chamber (3).

즉, 흡입행정 및 압축행정 초기에는 연소실(3)에 부압이 형성되고 코일 스프링(11)의 탄성에 의하여 밸브 시트(8、)에 접촉되므로서 블로바이 가스통로(7)와 유입공(10)이 연통(도 2참조)되어 블로바이 가스가 연소실에 공급되고, 압축행정 후단에서 배기행정까지에는 연소실(3)의 압력이 코일 스프링(11)의 탄성을 극복하므로서 블로바이 가스통로(7)와 유입공(10)은 폐쇄되도록 되어 있다.That is, in the initial stage of the suction stroke and the compression stroke, a negative pressure is formed in the combustion chamber 3 and the blow-by gas passage 7 and the inlet hole 10 are brought into contact with the valve seat 8 by the elasticity of the coil spring 11. This communication (see FIG. 2) causes the blow-by gas to be supplied to the combustion chamber, and the pressure of the combustion chamber 3 from the rear end of the compression stroke to the exhaust stroke overcomes the elasticity of the coil spring 11, Inlet hole 10 is to be closed.

이상과 같은 본 발명은 흡입행정 및 압축행정 초기에 개폐밸브(9)의 유입공(10)과 블로바이 가스통로(7)가 연통되어 크랭크 케이스 내의 블로바이 가스가 연소실(3)에 공급되어 흡입 혼합기에 스월을 생성하고, 압축행정 후단 이후에는 개폐밸브(9)는 연소실의 압력에 의하여 그 유입공(10)이 블로바이 가스통로(7)를 폐쇄하여 블로바이 가스의 공급을 차단하는 것이다.In the present invention as described above, the inlet hole 10 of the on-off valve 9 and the blow-by gas passage 7 communicate with each other at the initial stage of the suction stroke and the compression stroke, so that the blow-by gas in the crankcase is supplied to the combustion chamber 3 and suctioned. The swirl is generated in the mixer, and after the compression stroke, the opening / closing valve 9 closes the blow-by gas passage 7 to block the supply of the blow-by gas by the pressure of the combustion chamber.

상기와 같이 블로바이 가스를 연소실에 공급하여 혼합기에 와류를 증진하므로 연소효율을 개선하여 연비개선, 출력향상 및 배기 유해성분의 저감을 이룩할 수 있는 것이다.By supplying the blow-by gas to the combustion chamber as described above to improve the vortex in the mixer, it is possible to improve the fuel efficiency, improve the fuel efficiency, reduce output and harmful emissions components.

또한 블로바이 가스는 연소실에 직접 공급하므로 종래 흡기도관에 공급할 때 고형물이 흡기도관에 퇴적하여 흡기에 저항을 초래했던 결점도 제거되며, 배출가스 저감과 연소효율 개선이 동시에 충족되는 것이다.In addition, since the blow-by gas is directly supplied to the combustion chamber, the defect that the solid matter accumulated in the intake airway pipe and caused the resistance to intake air when the air supply is supplied to the conventional air intake pipe is removed, and emission reduction and combustion efficiency improvement are simultaneously satisfied.

이상과 같이 본 발명은 블로바이 가스를 흡입행정 및 압축행정 초기에 연소실에 공급하여 연소효율을 개선함으로써 연비개선, 출력향상 및 배기유해성분의 저감을 이룩할 뿐 아니라 배출가스 저감도 동시에 충족하여 배출가스 대책에 만전을 기할 수 있는 등의 효과가 있는 것이다.As described above, the present invention supplies the blow-by gas to the combustion chamber at the beginning of the suction stroke and the compression stroke to improve the combustion efficiency, thereby improving fuel efficiency, output and reducing harmful emissions, while simultaneously meeting the emission reduction and exhaust gas. There is an effect such as being able to make sure the measures are taken.

Claims (4)

실린더 블록의 실린더 보어에 피스톤을 삽입하고, 실린더 블록에 실린더 헤드를 결합하여 연소실을 형성하는 것에 있어서, 상기 실린더 블록의 실린더 보어 주위에 일단은 크랭크 케이스에 타단은 연소실에 연통되는 블로바이 가스통로를 형성하고, 상기 통로의 출구측에 개폐밸브를 설치하여서 된 내연기관의 와류 생성장치.A piston is inserted into a cylinder bore of a cylinder block, and a cylinder head is coupled to a cylinder block to form a combustion chamber. A blow-by gas passage, one end of which is connected to the crankcase and the other end of the cylinder bore, is connected to the combustion chamber. And a vortex generating device for an internal combustion engine formed by providing an on / off valve on an outlet side of the passage. 제1항에 있어서, 개폐밸브는 흡입행정 및 압축행정 초기에만 개방되는 내연기관의 와류 생성장치.The vortex generating device of an internal combustion engine according to claim 1, wherein the on-off valve is opened only at the beginning of the suction stroke and the compression stroke. 제1항에 있어서, 블로바이 가스통로의 출구에 헬리컬상 돌기를 형성한 내연기관의 와류 생성장치.The vortex generating device of an internal combustion engine according to claim 1, wherein a helical protrusion is formed at an outlet of the blow-by gas passage. 제1항 또는 제3항에 있어서, 블로바이 가스통로의 출구 개구방향은 피스톤의 중심에서 편심되는 방향으로 형성한 내연기관의 와류 생성장치.4. The vortex generating device of an internal combustion engine according to claim 1 or 3, wherein the outlet opening direction of the blow-by gas passage is formed in a direction eccentric from the center of the piston.
KR1019970062666A 1997-11-25 1997-11-25 Apparatus for generating swirl flow for internal combustion engine KR100293987B1 (en)

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58132119U (en) * 1982-03-01 1983-09-06 スズキ株式会社 Blow-by gas reduction equipment

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58132119U (en) * 1982-03-01 1983-09-06 スズキ株式会社 Blow-by gas reduction equipment

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