KR19980037370A - Structure of camshaft for opening and closing valve mechanism of automobile - Google Patents
Structure of camshaft for opening and closing valve mechanism of automobile Download PDFInfo
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- KR19980037370A KR19980037370A KR1019960056115A KR19960056115A KR19980037370A KR 19980037370 A KR19980037370 A KR 19980037370A KR 1019960056115 A KR1019960056115 A KR 1019960056115A KR 19960056115 A KR19960056115 A KR 19960056115A KR 19980037370 A KR19980037370 A KR 19980037370A
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- projection
- valve
- camshaft
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- Valve-Gear Or Valve Arrangements (AREA)
Abstract
본 발명은 캠샤프트에 마련된 로브(LOBE)를 2개로 형성하므로 흡입과정중에서 배기밸브가 약간 열리도록 하여 엔진으로부터 배출되는 배기가스를 저감하여 안전하고 경제적인 사용을 이루게 하는 것으로 종래에는 캠샤프트를 이용한 배기가스저감을 이룰 수 없어 엔진의 성능이 저감되거나 배기행정의 미흡으로 안전하고 효율적인 사용을 이룰 수 없게 되는 문제점이 있어서, 본 고안에서는 캠샤프트(10)의 일측에 마련되는 제1돌출부(12)와 이 제1돌출부(12)와 대칭 되는 제2돌출부(14)를 구비되어 흡입행정시 배기밸브를 개방하도록 구성하여 흡입행정중 배기밸브를 약간개방하여 배기가스를 연소실로 흡입하므로 배기가스를 저감하면서 배기 안정성을 이루게 하여 엔진성능을 향상하면서 양호한 배기 상태로 경제적이면서 효율을 높이는 것이다.In the present invention, since two lobes are provided on the camshaft, the exhaust valve is slightly opened during the suction process, thereby reducing the exhaust gas discharged from the engine to achieve safe and economical use. There is a problem in that it is not possible to achieve a reduction of the exhaust gas to reduce the performance of the engine or to achieve a safe and efficient use due to insufficient exhaust stroke, in the present invention, the first projection 12 provided on one side of the cam shaft 10 And a second projection 14 which is symmetrical to the first projection 12, to open the exhaust valve during the intake stroke, and slightly open the exhaust valve during the intake stroke to suck the exhaust gas into the combustion chamber, thereby reducing the exhaust gas. While achieving exhaust stability, the engine performance is improved while improving the engine performance in a good exhaust state economically and efficiently.
Description
본 발명은 자동차의 엔진에 사용되는 밸브기구를 개폐하는 캠샤프트에 관한 것으로서, 더욱 상세하게는 캠샤프트에 마련된 로브(LOBE)를 2개로 형성하므로 흡입과정중에서 배기밸브가 약간 열리도록 하여 엔진으로부터 배출되는 배기가스를 저감하여 안전하고 경제적인 사용을 이루게 하는 자동차의 밸브기구 개폐용 캠샤프트의 구조에 관한 것이다.The present invention relates to a cam shaft for opening and closing a valve mechanism used in an engine of an automobile, and more particularly, two lobes (LOBE) provided on the cam shaft are formed so that the exhaust valve is slightly opened during the inhalation process and discharged from the engine. The present invention relates to a structure of a camshaft for opening and closing a valve mechanism of an automobile to reduce exhaust gas, thereby achieving safe and economical use.
일반적으로 밸브기구는 엔진에 마련되는 각 실린더의 흡입밸브와 배기밸브를 점화 순서대로 설계된 시기에 맞춰 개폐작용을 하는 것으로 이 흡1W배기밸브는 캠샤트에 의하여 조정되고 있다.In general, the valve mechanism acts to open and close the intake valve and exhaust valve of each cylinder provided in the engine in the order of ignition order, and this intake 1W exhaust valve is controlled by a camshaft.
이러한 캠샤프는 도 1에서와 같이 로브(1)가 캠샤프트(2)의 소정위치에 하나만이 마련되어 회전에 따라 배기밸브를 조정하여 배기가스를 배출하게 되어 있다. 그러나 상기와 같은 캠샤프트(2)에 의하면 밸브리프트량이 한정되어 있어 배기행정이외에는 배기밸브를 개방하지 못하게 되어 배기가스의 저감을 이룰 수 없게 되므로 한번 배기가스의 저감을 위한 장치가 요구되는 것이었다.In the camshaft, as shown in FIG. 1, only one lobe 1 is provided at a predetermined position of the camshaft 2 to adjust the exhaust valve according to rotation to discharge the exhaust gas. However, according to the camshaft 2 as described above, the amount of valve lift is limited, and the exhaust valve cannot be opened except for the exhaust stroke, so that the exhaust gas can not be reduced. Therefore, a device for reducing the exhaust gas is required.
이러한 엔진에서 배출되는 배기가스를 저감하는 방법중에 EGR(Exhaust Gas Recrculation)방법이 채택되고 있는데 통상의 EGR은 배기메니폴트로부터 배기가스를 관을 통해 흡기메니폴트로 집어넣는 방법이 사용되고 있다.As a method of reducing the exhaust gas discharged from such an engine, an exhaust gas recrculation (EGR) method is adopted. In the conventional EGR, a method of inserting exhaust gas from an exhaust manifold into an intake manifold through a pipe is used.
따라서, 캠샤프트를 이용한 배기가스저감을 이룰 수 없어 엔진의 성능이 저감되거나 배기행정의 미흡으로 안전하고 효율적인 사용을 이룰 수 없게 되는 문제점이 있었다.Accordingly, there is a problem in that it is impossible to achieve exhaust gas reduction using a camshaft, thereby reducing the performance of the engine or failing to achieve safe and efficient use due to insufficient exhaust stroke.
이에 본 발명은 이와 같은 종래 기술의 문제점들을 개선하기 위하여 안출된 것으로서, 본 발명의 목적은 밸브기구의 흡입행정증에 배기가스를 미세하게 개방하여 배기가스를 연소실내에 흡입시켜 배기가스의 저감을 이루게 하여 엔진성능을 향상시키면서 배기기구의 안정된 행정을 이루도록 하는 자동차의 밸브기구 개폐용 캠샤프트의 구조를 제공하는 데 있다.Accordingly, the present invention has been made to solve the problems of the prior art, an object of the present invention is to finely open the exhaust gas in the suction stroke of the valve mechanism to suck the exhaust gas into the combustion chamber to reduce the exhaust gas It is to provide a structure of the cam shaft for opening and closing the valve mechanism of the vehicle to achieve a stable stroke of the exhaust mechanism while improving the engine performance.
이와 같은 목적을 실현하기 위하여 이루어진 본 발명은 흡입밸브와 배기밸브밸브를 개폐하는 자동차의 밸브기구에 사용되는 캠샤프트에 있어서, 상기 캠샤프트의 일측에 마련되는 제1돌출부와 이 제1돌출부와 대칭되는 제2돌출부를 구비되어 흡입행정시 배기밸브를 개방하도록 구성되고, 상기 제2돌출부는 제1돌출부보다 작은 높이로 구성되는 자동차의 밸브기구 개폐용 캠샤프트의 구조를 제공한다.In order to achieve the above object, the present invention provides a cam shaft for use in a valve mechanism of an automobile for opening and closing an intake valve and an exhaust valve valve, the first protrusion being provided on one side of the cam shaft and the first protrusion being symmetrical. It is provided with a second projection is configured to open the exhaust valve during the suction stroke, the second projection provides a structure of the cam shaft for opening and closing the valve mechanism of the vehicle is configured to a height smaller than the first projection.
도 1 은 종래에 사용되는 캠샤프트가 설치된 밸브기구의 개략단면도1 is a schematic cross-sectional view of a valve mechanism provided with a cam shaft used in the related art.
도 2 는 본 발명에 의한 캠샤프트가 설치된 밸브기구의 개략단면도2 is a schematic sectional view of a valve mechanism provided with a cam shaft according to the present invention;
도 3 은 본 발명에 따른 캠샤프트의 단면도3 is a cross-sectional view of the camshaft according to the present invention;
도 4 은 본 발명에 따른 밸브리프트와 크랭크각도의 상관도Figure 4 is a correlation diagram of the valve lift and crank angle according to the present invention
* 도면의주요부분에대한부호의설명 *Explanation of symbols on the main parts of the drawing
10 : 캠샤프트12 : 제1돌출부10: camshaft 12: the first projection
14 : 제2돌출부14: second projection
이하, 본 발명의 바람직한 실시예를 첨부된 도면에 따라서 더욱 상세하게 설명하면 다음과 같다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
도 2 는 본 발명에 의한 캠샤프트가 설치된 밸브기구의 개략단면도이고 도 3 은 본 발명에 따른 캠샤프트의 단면도이며 도 4 은 본 발명에 따른 밸브리프트와 크랭크각도의 상관도로써, 이들 도면을 참고하면 본 발명의 자동차의 밸브기구 개폐용 캠샤프트의 구조는 자동차의 엔진에 사용되는 실린더(30)에 배치되어 흡입밸브(32)와 배기밸브(34)를 개폐하는 캠샤프트(10)로 이루어지는 밸브기구(36)가 마련되고 있다. 상기 캠샤프트(10)는 일측에 제1돌출부(12)가 마련되고 이 제1돌출부(12)와 대칭되는 곳에 제2돌출부(14)를 구비하는데 제2돌출부(14)는 제1돌출부(12)보다 작은 높이로 구성되어 흡입행정시 배기밸브(34)를 개방하도록 구성되고 있다.2 is a schematic cross-sectional view of a valve mechanism in which a cam shaft according to the present invention is installed, FIG. 3 is a cross-sectional view of a cam shaft according to the present invention, and FIG. 4 is a correlation diagram of a valve lift and a crank angle according to the present invention. When the camshaft for opening and closing the valve mechanism of the automobile of the present invention is a valve consisting of a camshaft 10 arranged in the cylinder 30 used for the engine of the automobile to open and close the intake valve 32 and the exhaust valve 34. The mechanism 36 is provided. The cam shaft 10 is provided with a first protrusion 12 on one side and is provided with a second protrusion 14 where the first protrusion 12 is symmetrical with the first protrusion 12. The second protrusion 14 has a first protrusion 12. It is configured to have a height smaller than) is configured to open the exhaust valve 34 during the suction stroke.
상기와 같이 이루어진 본 발명은 흡입행정시 배기밸브(34)를 약간 개방하게 되는데 이는 도 3에서와 같이 제2돌출부(14)를 제1돌출부(12)보다 낙은 높이로 대칭방향에 마련하여 흡입행정시 제2돌출부(14)에 의하여 배기밸브(34)를 약간(조금)개방시켜서 배기가스를 직접 연소실내에 흡입하여 배기가스를 저감하여 엔진성능 및 배기 행정의 안정성을 이루게 한다.The present invention made as described above slightly opens the exhaust valve 34 during the intake stroke, which is provided in the symmetrical direction by providing the second projection 14 with a height lower than that of the first projection 12 as shown in FIG. During the stroke, the exhaust valve 34 is slightly (slightly) opened by the second protrusion 14 to directly suck the exhaust gas into the combustion chamber to reduce the exhaust gas to achieve engine performance and stability of the exhaust stroke.
즉, 도 4의 곡선도에서와 같이 밸브리트트량에 따라 흡1W배기행정을 이루는 과정에서 캠샤프트(10)의 제2돌출부(14)에 의한 배기가스를 흡입하여 배기가스의 저감은 물론 배기 안정성을 이룰 수 있게 되어 EGR효과를 얻을 수 있게 된다.That is, as shown in the curve of FIG. 4, the exhaust gas is sucked by the second protrusion 14 of the cam shaft 10 in the process of forming the suction 1W exhaust stroke according to the valvelet amount, thereby reducing the exhaust gas as well as exhaust stability. Can achieve the EGR effect.
그리고 배기가스의 연소실 흡입량을 조절할 때에는 제2돌출부의 크기를 조정할 수 있는 것으로 본 발명에서 그 크기를 한정하지 않는 것은 엔진의 성능에 막게 제2돌출부를 설계하여 안전한 사용을 이룰 수 있게 하기 때문이다.In addition, the size of the second protrusion may be adjusted when adjusting the intake amount of the combustion chamber of the exhaust gas, and the size of the second protrusion is not limited in the present invention because the second protrusion may be designed to prevent the performance of the engine, thereby enabling safe use.
이상에서와 같이 본 발명은 캠샤프트에 제1,2돌출부를 형성하여 흡입행정중 배기밸브를 약간개방하여 배기가스를 연소실로 흡입하므로 배기가스를 저감하면서 배기 안정성을 이루게 하여 엔진성능을 향상하면서 양호한 배기 상태로 경제적이면서 효율을 높이는 신규발명인 것이다.As described above, the present invention forms the first and second protrusions on the camshaft to slightly open the exhaust valve during the intake stroke to suck the exhaust gas into the combustion chamber, thereby reducing exhaust gas and achieving exhaust stability, thereby improving engine performance. It is a new invention that increases the efficiency and efficiency in the exhaust state.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019960056115A KR19980037370A (en) | 1996-11-21 | 1996-11-21 | Structure of camshaft for opening and closing valve mechanism of automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019960056115A KR19980037370A (en) | 1996-11-21 | 1996-11-21 | Structure of camshaft for opening and closing valve mechanism of automobile |
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| Publication Number | Publication Date |
|---|---|
| KR19980037370A true KR19980037370A (en) | 1998-08-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019960056115A KR19980037370A (en) | 1996-11-21 | 1996-11-21 | Structure of camshaft for opening and closing valve mechanism of automobile |
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| Country | Link |
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| KR (1) | KR19980037370A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20190027441A (en) * | 2017-09-07 | 2019-03-15 | 현대자동차주식회사 | Mutiple variable valve lift appratus |
| WO2020130446A1 (en) * | 2018-12-18 | 2020-06-25 | 두산인프라코어 주식회사 | Valve control apparatus for engine |
-
1996
- 1996-11-21 KR KR1019960056115A patent/KR19980037370A/en not_active Application Discontinuation
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20190027441A (en) * | 2017-09-07 | 2019-03-15 | 현대자동차주식회사 | Mutiple variable valve lift appratus |
| WO2020130446A1 (en) * | 2018-12-18 | 2020-06-25 | 두산인프라코어 주식회사 | Valve control apparatus for engine |
| CN113242934A (en) * | 2018-12-18 | 2021-08-10 | 斗山英维高株式会社 | Valve control device for engine |
| US20220220906A1 (en) * | 2018-12-18 | 2022-07-14 | Doosan Infracore Co., Ltd. | Valve control apparatus for engine |
| US11988160B2 (en) | 2018-12-18 | 2024-05-21 | Hd Hyundai Infracore Co., Ltd. | Valve control apparatus for engine |
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