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KR20030096592A - Variable valve structure of variable intake system - Google Patents

Variable valve structure of variable intake system Download PDF

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Publication number
KR20030096592A
KR20030096592A KR1020020033556A KR20020033556A KR20030096592A KR 20030096592 A KR20030096592 A KR 20030096592A KR 1020020033556 A KR1020020033556 A KR 1020020033556A KR 20020033556 A KR20020033556 A KR 20020033556A KR 20030096592 A KR20030096592 A KR 20030096592A
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KR
South Korea
Prior art keywords
variable valve
speed port
variable
high speed
intake system
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Application number
KR1020020033556A
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Korean (ko)
Inventor
추동호
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현대자동차주식회사
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Priority to KR1020020033556A priority Critical patent/KR20030096592A/en
Publication of KR20030096592A publication Critical patent/KR20030096592A/en

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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
    • F02B27/00—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues
    • F02B27/02—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues the systems having variable, i.e. adjustable, cross-sectional areas, chambers of variable volume, or like variable means
    • 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)
  • Characterised By The Charging Evacuation (AREA)

Abstract

PURPOSE: A variable valve structure of a variable intake system is provided to prevent the leakage of air by forming a sealing ring at the outer circumference of the variable valve. CONSTITUTION: In a variable intake system having a variable valve(4) for opening a high-speed port(3) selectively, a sealing ring(12) is formed at the outer circumference of the variable valve. The sealing ring adheres closely to the wall surface of the high-speed port, and prevents the leakage of air. A sealing groove(10) is formed at the outer circumference of the variable valve. One end of the sealing ring is inserted into the sealing groove, and the other end adheres closely to the wall surface of the high-speed port.

Description

가변흡기 시스템의 가변밸브 구조{Variable valve structure of variable intake system}Variable valve structure of variable intake system

본 발명은 가변흡기 시스템의 가변밸브 구조에 관한 것으로서, 특히 엔진이 저속 구동함에 따라 가변밸브가 닫혔을때 상기 밸브를 통한 공기의 유출이 발생하지 않도록 하고, MAP 센서에 의한 정확한 공연비 제어가 가능하도록 하여 엔진의 연소효율을 향상시키고, 배기가스의 발생량을 감소시킬 수 있도록 한 가변흡기 시스템의 가변밸브 구조에 관한 것이다.The present invention relates to a variable valve structure of a variable intake system, and in particular, to prevent the outflow of air through the valve when the variable valve is closed as the engine operates at a low speed, and to enable accurate air-fuel ratio control by the MAP sensor. Therefore, the present invention relates to a variable valve structure of a variable intake system capable of improving the combustion efficiency of an engine and reducing the amount of exhaust gas generated.

가변흡기 시스템(Variable Intake system)이라 함은 엔진으로 흡기를 공급하는 흡기매니폴드에 길이가 긴 저속포트와 상대적으로 길이가 짧은 고속포트를 형성하고, 상기 고속포트를 엔진 회전수에 따라 선택적으로 개방시켜 고속운전영역에서 보다 많은 양의 공기가 엔진으로 공급되어 엔진의 고속성능이 향상되도록 하고, 또한 저속일 경우에는 길이가 길고 단면적이 작은 저속포트로 흡기가 엔진에 공급되도록 하므로서 엔진의 저속성능이 향상되도록 한 것이다.Variable intake system is a variable intake manifold that supplies intake to the engine and forms a long low speed port and a relatively short high speed port, and selectively opens the high speed port according to the engine speed. In the high speed operation area, more air is supplied to the engine to improve the high speed performance of the engine, and at low speed, the intake air is supplied to the engine at a low speed port having a long length and a small cross-sectional area. It is to be improved.

도 2 는 종래의 가변흡기 시스템을 도시한 것으로서,2 shows a conventional variable intake system,

흡기를 엔진에 공급하는 흡기매니폴드(1)에 길이가 길게 형성되는 다수의 저속포트(2)가 형성되고, 상기 저속포트(2)의 출력측과 연통되도록 길이가 짧은 고속포트(3)가 형성되어 있으며, 상기 고속포트(3)에는 엔진이 고속영역으로 운전할때 개방되는 가변밸브(4)가 형성되어 있는 구조이다.A plurality of low speed ports 2 having a long length are formed in the intake manifold 1 for supplying the intake air to the engine, and a short high speed port 3 is formed to communicate with the output side of the low speed port 2. The high speed port 3 has a structure in which a variable valve 4 which is opened when the engine operates in a high speed region is formed.

즉, 상기 가변밸브(4)는 고속포트(3)의 출구측에 설치되어 엔진이 저속으로 구동할때에는 고속포트(3)를 차단하여 흡기가 길이가 길고, 단면적이 작은 저속포트(2)를 통해서 엔진에 공급되도록 하고, 엔진이 고속으로 구동할때에는 고속포트(3)를 개방시켜 길이는 짧고 단면적이 큰 고속포트(3)를 통해 보다 많은 양의 흡기가 엔진으로 공급되도록 하여 엔진의 고속성능이 향상되도록 한 것이다.That is, the variable valve 4 is installed at the outlet side of the high speed port 3 so that when the engine is driven at a low speed, the high speed port 3 is blocked so that the intake air has a long length and a low speed port 2 having a small cross-sectional area. When the engine is driven at high speed, the high speed port 3 is opened so that a larger amount of intake air is supplied to the engine through the high speed port 3 having a shorter cross-sectional area. This is to be improved.

그러나, 종래의 가변밸브는 단순히 고속포트를 개폐하는 것이기 때문에 엔진의 저속운전시 가변밸브가 고속포트를 닫고있을때 저속포트를 통해 엔진으로 흡기가 공급될때 고속포트에 존재하는 공기의 일부가 상기 가변밸브와 고속포트의 틈사이로 유출되어 유체의 손실 뿐만 아니라 상기 가변밸브 부근에서 유출되는 공기가 저속포트를 통해 엔진으로 공급되는 흡기에 저항으로 작용하게되어 흡기의 흐름이 불안정해지는 문제점을 갖고 있었다.However, since the conventional variable valve simply opens and closes the high speed port, part of the air present in the high speed port is supplied when the intake air is supplied to the engine through the low speed port when the variable valve is closed at the low speed operation of the engine. In addition to the loss of the fluid flows through the gap between the high speed port and the air flowing out near the variable valve acts as a resistance to the intake air supplied to the engine through the low speed port has a problem that the flow of the intake is unstable.

따라서, 상기 문제점을 해결하기 위한 본 발명은 고속포트를 선택적으로 개방시키는 가변밸브의 외주연에 가변밸브가 닫혔을때 흡기의 유출을 차단하는 밀폐수단을 형성하므로서, 엔진이 저속 구동함에 따라 가변밸브가 닫혔을때 상기 밸브를 통한 공기의 유출이 발생하지 않도록 하고, MAP 센서에 의한 정확한 공연비 제어가 가능하도록 하여 엔진의 연소효율을 향상시키고, 배기가스의 발생량을 감소시킬 수 있도록 한 가변흡기 시스템의 가변밸브 구조를 제공함을 목적으로 한다.Accordingly, the present invention for solving the above problems is formed on the outer periphery of the variable valve for selectively opening the high speed port to form a sealing means for blocking the outflow of intake air when the variable valve is closed, the variable valve as the engine is driven at low speed Of the variable intake system to prevent the air flow through the valve when the valve is closed and to accurately control the air-fuel ratio by the MAP sensor to improve the combustion efficiency of the engine and reduce the amount of exhaust gas generated. It is an object to provide a variable valve structure.

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

길이가 긴 저속포트와, 상기 저속포트의 출력측에 연통 형성되는 길이가 짧은 고속포트와, 상기 고속포트를 선택적으로 개방시키는 가변밸브를 포함하는 가변흡기 시스템에 있어서,A variable intake system comprising a low speed port having a long length, a short speed high speed port communicating with an output side of the low speed port, and a variable valve for selectively opening the high speed port,

상기 가변밸브의 외주연에 고속포트의 벽면과 밀착되어 흡기의 유출을 차단하는 밀폐링을 형성한 것을 특징으로 한다.The outer surface of the variable valve is in close contact with the wall surface of the high speed port is characterized in that the sealing ring for blocking the outflow of the intake air.

상기 가변밸브의 외주연에 실링홈을 요입 형성하고, 밀폐링의 일측 단부가 상기 실링홈 내에 삽입되도록 하여 밀폐링의 타측이 가변밸브의 외부에 돌출된 상태로 고속포트의 내벽에 밀착되도록 하며,Sealing groove is formed in the outer periphery of the variable valve, one end of the sealing ring is inserted into the sealing groove so that the other side of the sealing ring is in close contact with the inner wall of the high speed port in a state protruding to the outside of the variable valve,

상기 실링홈 내부에는 밀폐링을 외각으로 밀어내는 스프링을 탄지한 것을 특징으로 한다.Inside the sealing groove is characterized in that the spring to push the sealing ring to the outer shell.

도 1 은 본 발명의 가변흡기 시스템의 가변밸브 구조를 보인 도면.1 is a view showing a variable valve structure of a variable intake system of the present invention.

도 2 는 종래의 가변흡기 시스템을 보인 부분 단면 사시도.Figure 2 is a partial cross-sectional perspective view of a conventional variable intake system.

도 3 은 종래의 가변밸브구조를 보인 단면도.3 is a cross-sectional view showing a conventional variable valve structure.

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

1 : 흡기매니폴드 2 : 저속포트1: Intake manifold 2: Low speed port

3 : 고속포트 4 : 가변밸브3: high speed port 4: variable valve

10 : 실링홈 11 : 스프링10: sealing groove 11: spring

12 : 밀폐링 13 : 단부12: sealing ring 13: end

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

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.

길이가 길게 형성된 저속포트(2)의 출구측에 연통하도록 단면적이 크면서 길이가 짧은 고속포트(3)가 연결 형성되고, 상기 고속포트(3)의 출구측에는 선택적으로 개폐되는 가변밸브(4)가 형성된다.A variable valve 4 having a large cross-sectional area and a short length of the high speed port 3 is connected to communicate with the outlet side of the low speed port 2 having a long length, and is selectively opened and closed at the outlet side of the high speed port 3. Is formed.

본 발명에서는 상기 가변밸브(4)의 외주연에 고속포트의 완전 차단을 위한 밀폐링(12)을 형성하였다.In the present invention, a sealing ring 12 is formed on the outer periphery of the variable valve 4 to completely block the high speed port.

가변밸브(4)의 외주연에 밀폐링(12)의 장착을 위한 일정크기의 실링홈(10)을 형성하고, 이 실링홈(10) 내에 밀폐링(12)의 일측 단부를 삽입하여 밀폐링(12)의 타측이 가변밸브(4)의 외부로 노출되도록 하였다.A sealing groove 10 having a predetermined size for mounting the sealing ring 12 is formed on the outer circumference of the variable valve 4, and one end of the sealing ring 12 is inserted into the sealing groove 10 to seal the sealing ring. The other side of (12) was exposed to the outside of the variable valve (4).

실링홈(10)의 내부에는 스프링(11)을 탄지시켜, 이 스프링(11)의 탄성력에 의해 밀폐링(12)외각으로 밀리면서 밀폐링(12)과 고속포트(3)의 내벽면간의 밀착력이 향상되도록 하였다.A spring 11 is held in the sealing groove 10 and pushed to the outside of the sealing ring 12 by the elastic force of the spring 11, and the adhesion between the sealing ring 12 and the inner wall surface of the high speed port 3 is secured. This was to be improved.

상기와같이 스프링(11)을 설치함에 따라 가변밸브(4)가 닫혀있을때 밀폐링(12)이 스프링(11)의 탄성에 의해 외각을 향해 지속적으로 밀리게되므로 밀폐링(12)이 고속포트(3)를 완전히 차단하게되는 것이다.As the spring 11 is installed as described above, when the variable valve 4 is closed, the sealing ring 12 is continuously pushed toward the outside by the elasticity of the spring 11 so that the sealing ring 12 is a high speed port ( 3) will be completely blocked.

이와같이 구성된 본 발명의 작용 및 효과를 설명하면 다음과 같다.Referring to the operation and effects of the present invention configured as described above are as follows.

엔진이 저속운전영역으로 동작하면, 상기 가변밸브(4)가 오프되면서 도 1 과같이 고속포트(3)를 차단하게 된다.When the engine operates in the low speed operation region, the variable valve 4 is turned off to block the high speed port 3 as shown in FIG. 1.

상기와같이 가변밸브(4)가 닫히게되면, 가변밸브(4)의 외주연에 형성되어 있는 밀폐링(12)이 고속포트(3)의 벽면에 완전히 밀착하게 되므로 공기의 유출현상이 발생하지 않게된다.When the variable valve 4 is closed as described above, the sealing ring 12 formed on the outer circumference of the variable valve 4 is completely in close contact with the wall surface of the high speed port 3 so that air leakage does not occur. do.

따라서, 가변밸브(4)가 차단됨에 따라 흡기는 길이가 긴 저속포트(2)를 통해 엔진으로 공급되는 것이다.Therefore, as the variable valve 4 is blocked, the intake air is supplied to the engine through the long low speed port 2.

이와같이 가변밸브(4)가 닫혔을때 고속포트에서 저속포트로 유출되는 공기가 전혀 발생하지 않게되므로 저속포트(2)를 통한 흡기의 유동이 원활해지고, 이에의해 공기의 충진효율이 향상되어 엔진의 성능이 향상되는 것이다.As such, when the variable valve 4 is closed, no air is discharged from the high speed port to the low speed port so that the intake air flows smoothly through the low speed port 2, thereby improving the filling efficiency of the air. Performance is improved.

또한, 엔진으로 공급되는 흡기가 완전하게 저속포트(2)에 의해서만 이루어지게되므로 MAP센서에 의한 정확한 공연비제어가 가능하게되어 연소효율을 향상시킬 수 있게된다.In addition, since the intake air supplied to the engine is completely made by the low speed port 2, accurate air-fuel ratio control by the MAP sensor is enabled, thereby improving the combustion efficiency.

이상에서 설명한 바와같이 본 발명은 고속포트를 선택적으로 개방시키는 가변밸브의 외주연에 가변밸브가 닫혔을때 흡기의 유출을 차단하는 밀폐수단을 형성하므로서, 엔진이 저속 구동함에 따라 가변밸브가 닫혔을때 상기 밸브를 통한 공기의 유출이 발생하지 않도록 하고, MAP 센서에 의한 정확한 공연비 제어가 가능하도록 하여 엔진의 연소효율을 향상시키고, 배기가스의 발생량을 감소시킬 수 있도록한 가변흡기 시스템의 가변밸브 구조를 제공하는 효과를 기대할 수 있다.As described above, the present invention forms a sealing means for blocking outflow of intake air when the variable valve is closed at the outer periphery of the variable valve for selectively opening the high speed port, so that the variable valve is closed as the engine runs at a low speed. The variable valve structure of the variable intake system to prevent the outflow of air through the valve and to accurately control the air-fuel ratio by the MAP sensor to improve the combustion efficiency of the engine and reduce the amount of exhaust gas generated Can be expected to provide an effect.

Claims (3)

길이가 긴 저속포트(2)와, 상기 저속포트(2)의 출력측에 연통 형성되는 길이가 짧은 고속포트(3)와, 상기 고속포트(3)를 선택적으로 개방시키는 가변밸브(4)를 포함하는 가변흡기 시스템에 있어서,A low speed port 2 having a long length, a short high speed port 3 communicating with the output side of the low speed port 2, and a variable valve 4 for selectively opening the high speed port 3; In the variable intake system, 상기 가변밸브(4)의 외주연에 고속포트(3)의 벽면과 밀착되어 흡기의 유출을 차단하는 밀폐링(12)을 형성한 것을 특징으로 하는 가변흡기 시스템의 가변밸브 구조.The variable valve structure of the variable intake system, characterized in that the outer periphery of the variable valve (4) is formed in close contact with the wall surface of the high speed port (3) to block the outflow of the intake air. 제 1 항에 있어서,The method of claim 1, 상기 가변밸브(4)의 외주연에 실링홈(10)을 요입 형성하고, 밀폐링(12)의 일측 단부(13)가 상기 실링홈(10) 내에 삽입되도록 하여 밀폐링(12)의 타측이 가변밸브(4)의 외부에 돌출된 상태로 고속포트(3)의 내벽에 밀착되도록 한 것을 특징으로 하는 가변흡기 시스템의 가변밸브 구조.The sealing groove 10 is formed in the outer periphery of the variable valve 4, one end 13 of the sealing ring 12 is inserted into the sealing groove 10 so that the other side of the sealing ring 12 The variable valve structure of the variable intake system, characterized in that to be in close contact with the inner wall of the high speed port (3) in the state protruding to the outside of the variable valve (4). 제 1 항 또는 제 2 항에 있어서,The method according to claim 1 or 2, 상기 실링홈(10) 내부에는 밀폐링(12)을 외각으로 밀어내는 스프링(11)을 탄지한 것을 특징으로 하는 가변흡기 시스템의 가변밸브 구조.The variable valve structure of the variable intake system, characterized in that the inner surface of the sealing groove (10) and the spring (11) for pushing the sealing ring 12 to the outer shell.
KR1020020033556A 2002-06-17 2002-06-17 Variable valve structure of variable intake system KR20030096592A (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS646564A (en) * 1987-06-29 1989-01-11 Akira Oshima Sealing device for butterfly valve
JP2000104517A (en) * 1998-09-30 2000-04-11 Tennex Corp Rotary valve of miller cycle type internal combustion engine
JP2000234522A (en) * 1999-02-10 2000-08-29 Eaton Corp Low leak air valve and manufacture thereof for variable intake system
KR20010036758A (en) * 1999-10-11 2001-05-07 정주호 Valve Assembly And Mounting Method For Variable Plastic Intake Manifold
JP2002130064A (en) * 2000-10-25 2002-05-09 Honda Motor Co Ltd Sealing structure of rotary valve in variable intake device of multi-cylinder internal combustion engine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS646564A (en) * 1987-06-29 1989-01-11 Akira Oshima Sealing device for butterfly valve
JP2000104517A (en) * 1998-09-30 2000-04-11 Tennex Corp Rotary valve of miller cycle type internal combustion engine
JP2000234522A (en) * 1999-02-10 2000-08-29 Eaton Corp Low leak air valve and manufacture thereof for variable intake system
KR20010036758A (en) * 1999-10-11 2001-05-07 정주호 Valve Assembly And Mounting Method For Variable Plastic Intake Manifold
JP2002130064A (en) * 2000-10-25 2002-05-09 Honda Motor Co Ltd Sealing structure of rotary valve in variable intake device of multi-cylinder internal combustion engine

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