KR20020051978A - Crankcase pressure control valve - Google Patents
Crankcase pressure control valve Download PDFInfo
- Publication number
- KR20020051978A KR20020051978A KR1020000081030A KR20000081030A KR20020051978A KR 20020051978 A KR20020051978 A KR 20020051978A KR 1020000081030 A KR1020000081030 A KR 1020000081030A KR 20000081030 A KR20000081030 A KR 20000081030A KR 20020051978 A KR20020051978 A KR 20020051978A
- Authority
- KR
- South Korea
- Prior art keywords
- diaphragm
- crankcase
- pressure control
- control valve
- valve body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M13/00—Crankcase ventilating or breathing
- F01M13/02—Crankcase ventilating or breathing by means of additional source of positive or negative pressure
- F01M13/021—Crankcase ventilating or breathing by means of additional source of positive or negative pressure of negative pressure
- F01M13/022—Crankcase ventilating or breathing by means of additional source of positive or negative pressure of negative pressure using engine inlet suction
- F01M13/023—Control valves in suction conduit
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M13/00—Crankcase ventilating or breathing
- F01M2013/0077—Engine parameters used for crankcase breather systems
- F01M2013/0083—Crankcase pressure
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Abstract
본 발명의 목적은 크랭크 케이스내의 블로바이가스를 흡기시스템으로 공급시 다양한 엔진에 장착하여 사용할 수 있도록 유량 특성의 조정이 가능한 크랭크 케이스 압력 제어 밸브를 제공하는데 있다.An object of the present invention is to provide a crankcase pressure control valve capable of adjusting the flow rate characteristics so that the blow-by gas in the crankcase to be supplied to various engines when supplied to the intake system.
상기한 목적을 달성하기 위하여 본 발명은 크랭크 케이스측에 접속되는 니플과 실린더 헤드 카바측에 접속되는 니플을 구비하는 밸브 본체와, 그 밸브 본체내에 설치되어 엔진 흡기 부압에 따라 이동 작동하는 다이어프램과, 그 다이어프램을 탄발 지지하는 스프링과, 그 밸브본체 내부에 다이어프램과 대향하여 솟아 있으며, 다이어프램과의 사이에 블로바이가스의 통과를 허용하는 틈새를 형성하는 돌출관을 포함하는 크랭크케이스 압력제어 밸브에 있어서,In order to achieve the above object, the present invention provides a valve body having a nipple connected to the crankcase side and a nipple connected to the cylinder head cover side, a diaphragm installed in the valve body and moving in accordance with the engine intake negative pressure; In a crankcase pressure control valve comprising a spring for supporting the diaphragm and a protruding tube that rises in the valve body so as to face the diaphragm, and forms a gap between the diaphragm and allowing the passage of blow-by gas. ,
상기 돌출관의 선단에는 상기 다이어프램과의 간격을 조절할 수 있는 틈새 조정관이 장착되어 있는 것을 특징으로 한다.The tip of the protruding tube is characterized in that the clearance adjustment tube that can adjust the gap with the diaphragm is mounted.
Description
본 발명은 크랭크 케이스내에 발생된 블로바이가스를 흡기 시스템으로 흡입시 각기 다른 차종에 공용 적용이 가능하도록 유량 특성의 조정이 가능한 크랭크 케이스 압력 제어 밸브(crankcase pressure control valve)에 관한 것이다.The present invention relates to a crankcase pressure control valve capable of adjusting the flow characteristics so that the blow-by gas generated in the crankcase to the intake system can be commonly applied to different vehicle types.
엔진의 압축 과정시 실린더와 피스톤의 틈새를 통하여 누설된 블로바이가스는 크랭크 케이스내에 수집되어지게 된다.During the compression of the engine, the blow-by gas leaked through the gap between the cylinder and the piston is collected in the crankcase.
이 블로바이가스는 미연소 가스로서 그의 주성분은 탄화수소이므로 이를 외부로 그대로 방출하게 되는 경우 대기 오염을 일으키게 된다.This blow-by gas is an unburned gas and its main component is a hydrocarbon, so if it is released to the outside as it is, it causes air pollution.
이에 따라 특히 압축비가 높아 블로바이가스의 생성량이 많은 디젤엔진의 경우 대기오염 방지를 위해 크랭크 케이스내의 블로바이가스를 흡기 시스템으로 리턴시켜 연소시켜 배출하고 있다. 그런데 크랭크 케이스내의 블로바이가스 압력이 높으면 가스의 외부 누설이 발생케 되고, 너무 낮으면 연소실로부터 압축가스의 누설이 쉽게 일어나므로 크랭크 케이스내의 압력을 적정한 부압으로 유지하는 조건이 필요하다.Accordingly, in the case of diesel engines having a high compression ratio and generating a large amount of blow-by gas, the blow-by gas in the crankcase is returned to the intake system to be burned and discharged to prevent air pollution. However, when the blow-by gas pressure in the crankcase is high, external leakage of gas occurs, and when it is too low, leakage of compressed gas easily occurs from the combustion chamber, so a condition for maintaining the pressure in the crankcase at an appropriate negative pressure is required.
이를 위해 종래의 경우 대기 오염 방지를 위해 크랭크 케이스내의 블로바이가스를 흡기측에 환류시킴과 함게 크랭크케이스내 압력을 적정한 부압이 유지되도록 하는 수단으로 크랭크 케이스 압력 제어밸브를 사용하고 있다.To this end, in order to prevent air pollution, a crankcase pressure control valve is used as a means for refluxing blow-by gas in the crankcase to the intake side and maintaining an appropriate negative pressure in the crankcase.
도 2에 종래 구조의 압력제어밸브(20)를 도시하였는바, 일측 니플(21)은 크랭크케이스에 접속되고, 타측 니플(22)은 실린더 헤드 카바에 접속하여, 엔진의 운전중 흡기측의 부압에 의해 크랭크 케이스내에 수집된 블로바이가스가 실린더 헤드 카바에 보내진 후 다시 별도의 호스를 통해 흡기시스템으로 리턴공급되도록 되어 있다.2 shows a pressure control valve 20 having a conventional structure, one side nipple 21 is connected to the crankcase, the other nipple 22 is connected to the cylinder head cover, and the negative pressure on the intake side during operation of the engine is shown. The blow-by gas collected in the crankcase is sent to the cylinder head cover and then returned to the intake system through a separate hose.
이때 흡기 시스템으로 유입되는 블로바이가스의 유량은 크랭크 케이스 압력 제어 밸브(20)의 다이어프램(23)과 스프링(24) 및 돌출관(25)의 단부와 다이어프램(23)사이의 틈새(t)에 의하여 결정되어지고 있다.At this time, the flow rate of the blow-by gas flowing into the intake system is in the gap t between the diaphragm 23 and the spring 24 and the end of the protruding pipe 25 and the diaphragm 23 of the crankcase pressure control valve 20. It is determined by.
그러나 상기한 종래 구조에 의하면 틈새(t)가 항상 일정하기 때문에 한 엔진에 적용할 수 있도록 개발한 부품을 다른 엔진에 적용코자 할때에는 새 엔진에서 필요로 하는 유량 특성에 적합토록 스프링(24) 특성과 틈새(t) 조건을 변경하지 아니하면 안된다.However, according to the above-described conventional structure, the clearance t is always constant, so that when the component developed to be applied to one engine is applied to another engine, the spring 24 is suitable for the flow characteristics required by the new engine. And the condition of the clearance (t) must be changed.
이때 스프링(24)은 별개체의 양산 부품이므로 다이어프램(23)과의 상대적 조건에 따라 쉽게 그 탄성 조건의 변경이 가능하나, 틈새(t) 조건을 변경하기 위해서는 본체(25)를 새로운 금형에 의해 제작하지 아니하면 안되므로 종래의 경우 엔진조건에 따라 다양한 금형을 제작하여야 하므로 원가가 많이 들고 각기 다른 여러 규격의 제품 관리상 조립시 혼선이 발생하여 엔진 성능 불량을 유발하는 문제점이 있었다.At this time, since the spring 24 is a separate mass-produced part, the elastic condition can be easily changed according to the relative condition with the diaphragm 23. However, in order to change the gap t condition, the main body 25 is replaced by a new mold. In the conventional case, various molds have to be manufactured according to engine conditions. Therefore, cost is high and there is a problem in that engine performance is deteriorated due to confusion in assembling products of different specifications.
이에 본 발명은 상기한 문제점을 감안하여 제안한 것으로서 그의 목적으로 하는 것은 크랭크 케이스내의 블로바이가스를 흡기시스템으로 공급시 다양한 엔진에 장착하여 사용할 수 있도록 유량 특성의 조정이 가능한 크랭크 케이스 압력 제어 밸브를 제공하는데 있다.Accordingly, the present invention has been proposed in view of the above problems, and its object is to provide a crankcase pressure control valve capable of adjusting flow characteristics so that blow-by gas in the crankcase can be mounted to various engines when supplied to the intake system. It is.
상기한 목적을 달성하기 위하여 본 발명은 크랭크 케이스측에 접속되는 니플과 실린더 헤드 카바측에 접속되는 니플을 구비하는 밸브 본체와, 그 밸브 본체내에 설치되어 엔진 흡기 부압에 따라 이동 작동하는 다이어프램과, 그 다이어프램을 탄발 지지하는 스프링과, 그 밸브본체 내부에 다이어프램과 대향하여 솟아 있으며, 다이어프램과의 사이에 블로바이가스의 통과를 허용하는 틈새를 형성하는 돌출관을 포함하는 크랭크케이스 압력제어 밸브에 있어서,In order to achieve the above object, the present invention provides a valve body having a nipple connected to the crankcase side and a nipple connected to the cylinder head cover side, a diaphragm installed in the valve body and moving in accordance with the engine intake negative pressure; In a crankcase pressure control valve comprising a spring for supporting the diaphragm and a protruding tube that rises in the valve body so as to face the diaphragm, and forms a gap between the diaphragm and allowing the passage of blow-by gas. ,
상기 돌출관의 선단에는 상기 다이어프램과의 간격을 조절할 수 있는 틈새 조정관이 장착되어 있는 것을 특징으로 한다.The tip of the protruding tube is characterized in that the clearance adjustment tube that can adjust the gap with the diaphragm is mounted.
본 발명의 청구항 2 기재에 의하면 상기 틈새 조정관은 나사에 의해 상기 돌출관에 계합된 것을 특징으로 한다.According to claim 2 of the present invention, the gap adjusting tube is engaged with the protruding tube by a screw.
도 1은 본 발명에 의한 크랭크케이스 압력제어 밸브를 나타내는 정단면도1 is a front sectional view showing a crankcase pressure control valve according to the present invention.
도 2는 종래기술2 is a prior art
※ 도면의 주요 부분에 대한 부호의 설명※ Explanation of codes for main parts of drawing
1 : 크랭크 케이스 압력 제어 밸브 2,3 : 니플1: crankcase pressure control valve 2,3: nipple
4 : 밸브본체 5 : 다이어프램4: valve body 5: diaphragm
6 : 고정덮개 7 : 돌출관6: fixing cover 7: protrusion tube
8 : 압축스프링 9 : 틈새조정관8: compression spring 9: clearance adjusting pipe
10 : 나사 T : 틈새(유량통과)10: screw T: clearance (flow through)
이하 본 발명의 구성과 작용을 첨부한 도면을 참조하여 설명한다.Hereinafter, the configuration and operation of the present invention will be described with reference to the accompanying drawings.
도 1은 본 발명에 의한 크랭크 케이스 압력 제어밸브의 정단면도로서, 크랭크케이스 압력 제어밸브(1)는 2개의 니플(2)(3)을 가지는 밸브 본체(4)와, 그 밸브본체(4)에 설치되는 다이어프램(5)과, 그 다이어프램(5)을 고정하고 밸브본체(4)를 밀봉하는 고정덮개(6)와, 니플(3)과 동축상으로 밸브본체(4)내에 솟아올라 그의 단부가 다이어프램(5)과 대향하는 돌출관(7)이 형성되어 있으며, 그 돌출관(7)의 외주에는 압축스프링(8)이 끼워져 지지되고, 그 압축스프링(8)의 상단부는 다이어프램(5)을 탄발지지하도록 구성되어 있다.1 is a front sectional view of a crankcase pressure control valve according to the present invention, wherein the crankcase pressure control valve 1 includes a valve body 4 having two nipples 2 and 3 and a valve body 4 thereof. A diaphragm 5 installed in the valve body, a fixed cover 6 for fixing the diaphragm 5 and sealing the valve body 4, and an end portion of the diaphragm 5 which is coaxial with the nipple 3 and rises in the valve body 4 thereof. A protruding tube 7 is formed to face the diaphragm 5. A compression spring 8 is fitted to the outer periphery of the protruding tube 7, and the upper end of the compression spring 8 is diaphragm 5. It is configured to support the bullet.
그리고 상기 돌출관(7)의 선단에는 별도의 부품인 틈새조정관(9)이 계합되어 있으며, 그 돌출관(7)과 틈새조정관(9)은 나사(10)로 계합되어 있다.The clearance adjusting tube 9, which is a separate component, is engaged at the tip of the protrusion tube 7, and the protrusion tube 7 and the gap adjusting tube 9 are engaged with screws 10.
이와같은 구성의 본 발명은 블로바이가스의 유량 통과 특성에 맞추어 나사로 계합되어 있는 틈새조정관(9)의 돌출 높이를 조정하면 그 틈새(T)가 간단히 변경되므로 한 제품을 가지고 다양한 엔진에 적용할 수 있게 되는 것이다.The present invention having such a configuration can be applied to various engines with one product because the gap T is simply changed by adjusting the protrusion height of the gap adjusting pipe 9 engaged with the screw in accordance with the flow passage characteristics of the blow-by gas. Will be.
이에따라 틈새(T)가 변경되면 블로바이가스의 통과 유량이 변화되어지게 된다.Accordingly, when the gap T is changed, the flow rate of the blow-by gas is changed.
이상과 같은 본 발명에 의하면 블로바이가스의 유량 통과 특성을 결정하는 돌출관의 선단에 나사로 계합하는 틈새조정관을 장착하여 다이어프램과의 간격을 임의로 조정할 수 있기 때문에, 하나의 제품 사양을 가지고 다양한 엔진에 장착하여 사용할 수 있어 부품의 공용화가 가능하고 금형비를 크게 줄일 수 있는 효과가 있다.According to the present invention as described above, it is possible to arbitrarily adjust the gap with the diaphragm by mounting a gap adjusting pipe screwed to the tip of the protruding pipe to determine the flow-through characteristics of the blow-by gas, so that a variety of engines with one product specification It can be installed and used, so that parts can be used in common and mold cost can be greatly reduced.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2000-0081030A KR100410339B1 (en) | 2000-12-23 | 2000-12-23 | Crankcase pressure control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2000-0081030A KR100410339B1 (en) | 2000-12-23 | 2000-12-23 | Crankcase pressure control valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR20020051978A true KR20020051978A (en) | 2002-07-02 |
| KR100410339B1 KR100410339B1 (en) | 2003-12-18 |
Family
ID=27685203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR10-2000-0081030A Expired - Fee Related KR100410339B1 (en) | 2000-12-23 | 2000-12-23 | Crankcase pressure control valve |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR100410339B1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20130051837A (en) * | 2011-11-10 | 2013-05-21 | 현대자동차주식회사 | Vacuum pressure control system for brake booster on vehicle |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61160213U (en) * | 1985-03-28 | 1986-10-04 | ||
| DE4017074A1 (en) * | 1990-05-26 | 1991-11-28 | Mann & Hummel Filter | PRESSURE CONTROL VALVE FOR THE CRANKCASE VENTILATION ON AN INTERNAL COMBUSTION ENGINE |
| DE4022129A1 (en) * | 1990-07-11 | 1992-01-16 | Mann & Hummel Filter | PRESSURE CONTROL VALVE FOR INSTALLATION IN A BLEEDING LINE ON AN INTERNAL COMBUSTION ENGINE |
-
2000
- 2000-12-23 KR KR10-2000-0081030A patent/KR100410339B1/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20130051837A (en) * | 2011-11-10 | 2013-05-21 | 현대자동차주식회사 | Vacuum pressure control system for brake booster on vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| KR100410339B1 (en) | 2003-12-18 |
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