KR0132588Y1 - Intake valve of gasoline engine - Google Patents
Intake valve of gasoline engine Download PDFInfo
- Publication number
- KR0132588Y1 KR0132588Y1 KR2019930029629U KR930029629U KR0132588Y1 KR 0132588 Y1 KR0132588 Y1 KR 0132588Y1 KR 2019930029629 U KR2019930029629 U KR 2019930029629U KR 930029629 U KR930029629 U KR 930029629U KR 0132588 Y1 KR0132588 Y1 KR 0132588Y1
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- intake valve
- valve
- gasoline engine
- intake
- center
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
- F01L3/20—Shapes or constructions of valve members, not provided for in preceding subgroups of this group
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2304/00—Optimising design; Manufacturing; Testing
- B60Y2304/03—Reducing weight
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
본 고안은 가솔린 엔진 흡기밸브에 관한 것으로, 연료가스의 무화를 촉진시키고 밸브면의 점착물 생성을 억제하며 대기오염물질의 배출을 저감시킬 수 있도록 된 가솔린 엔진의 흡기밸브를 제공하는 것을 그 목적으로 하며, 밸브헤드(20a), 밸브스템(20b)으로 구성되는 흡기밸브(20)에 있어서, 그 일측 내부에 중공부(B)가 형성됨으로써 중심선상으로부터 일정한 편심량(e)만큼 이동되어 무게중심이 형성되는 것을 특징으로 한다.The present invention relates to an intake valve of a gasoline engine, and an object thereof is to provide an intake valve of a gasoline engine which is capable of promoting atomization of fuel gas, suppressing the formation of adhesive on the valve surface, and reducing the emission of air pollutants. In the intake valve 20 composed of the valve head 20a and the valve stem 20b, a hollow portion B is formed inside one side thereof, and the center of gravity is moved by a certain amount of eccentricity e from the center line. It is characterized by being formed.
Description
제1도는 일반적으로 내연기관의 개략적인 요부 단면도.1 is a schematic main cross-sectional view of an internal combustion engine.
제2도는 종래 일반적인 흡기밸브의 요부단면도.2 is a cross-sectional view of main parts of a conventional intake valve.
제3도는 본 고안에 따른 흡기밸브와 그의 작동관계를 도시하는 개략적인 단면도.3 is a schematic cross-sectional view showing an intake valve and an operating relationship thereof according to the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
20 : 흡기밸브 20a : 밸브헤드20: intake valve 20a: valve head
20b : 밸브스템 21 : 밸브시트20b: valve stem 21: valve seat
22 : 캠 23 : 스프링22: cam 23: spring
B : 중공부 e : 편심량B: hollow part e: eccentricity
본 고안은 가솔린 엔진의 흡기밸브에 관한 것으로, 특히 밸브의 무게중심이 편심되도록 형성함으로써 작동시 왕복운동과 함께 자연스러운 회전운동을 일으키게 하여, 연료가스의 무화를 촉진시키고 밸브면의 점착물 생성을 억제하며 대기 오염물질의 배출을 저감시킬 수 있도록 된 흡기밸브에 관한 것이다.The present invention relates to an intake valve of a gasoline engine, and in particular, the center of gravity of the valve is formed to be eccentric to cause a natural rotational movement with the reciprocating movement during operation, to promote the atomization of fuel gas and suppress the formation of adhesive on the valve surface The present invention relates to an intake valve capable of reducing the emission of air pollutants.
일반적으로, 가솔린 엔진의 경우 제1도에 도시된 바와 같이 흡기포트(3)를 거쳐 혼합기가 실린내(1)내로 흡입된 후 연소실(A)에서 연소, 폭발하여 피스톤(2)이 왕복운동을 함으로써 동력이 발생되도록 되어 있다. 여기서 공기와 연료의 혼합기체가 실린더(1)내로 흡입되는 시기는, 4사이클 엔진의 경우 흡기밸브(5)가 열리는 흡입행정에 해당된다. 흡기밸브(5)는 보통 직선 왕복운동을 하여 개폐되도록 되어 있다. 이때, 흡기밸브(5)는 왕복운동과 동시에 엔진의 진동 및 캠(8)의 구동등에 약간의 회전이 실제로 이루어지고 있으나, 극히 미세한 요인이다.In general, in the case of a gasoline engine, as shown in FIG. 1, the mixer is sucked into the cylinder 1 through the intake port 3, and then burned and exploded in the combustion chamber A, thereby causing the piston 2 to reciprocate. By this, power is generated. Here, the time when the mixed gas of air and fuel is sucked into the cylinder 1 corresponds to the intake stroke in which the intake valve 5 is opened in the case of a four-cycle engine. The intake valve 5 is normally opened and closed by linear reciprocating motion. At this time, the intake valve (5) is actually a slight rotation to the vibration of the engine and the drive of the cam (8) at the same time as the reciprocating motion, but is a very fine factor.
도면중 미설명부호 4,6,7은 각각 배기포트, 배기밸브, 태핏이다.In the drawings, reference numerals 4, 6 and 7 denote exhaust ports, exhaust valves and tappets, respectively.
종래의 통상적인 흡기밸브의 구조는 제2도에 도시된 바와같이 밸브헤드(10a)와 밸브스템(10b)이 일체형으로 되어 있으며, 내부가 꽉찬 형태를 취하고 있다. 이와같은 구조로 인하여 종래의 흡기밸브(10)는 직선 왕복운동만 할뿐 자체적인 회전운동은 거의 기대하기 어렵다. 따라서, 이와같은 흡기밸브(10)의 사용시 엔진의 구동시간이 경과함에 따라 윤활유가 혼합기등에 의해 밸브헤드(10a)에 점착물이 형성되게 된다. 이것한 자동차에 있어 주행성 및 연비가 저하되는 (특히 한랭시)원인이 되고 있을 뿐만 아니라, 한랭시에 대기 오염물질을 많이 배출하게 하는 원인이기도 하다.In the conventional conventional intake valve structure, as shown in FIG. 2, the valve head 10a and the valve stem 10b are integrated, and the inside of the intake valve is full. Due to such a structure, the conventional intake valve 10 only performs a linear reciprocating motion, and hardly expects its own rotational motion. Therefore, as the driving time of the engine elapses when the intake valve 10 is used, lubricating oil is formed on the valve head 10a by a mixer or the like. Not only does this cause a deterioration in driving performance and fuel economy (especially in cold weather), but also causes a lot of air pollutants in cold weather.
본 고안은 상기와 같은 종래의 흡기밸브의 문제점과 그에 따른 폐단을 해소하고자 안출된 것으로, 연료가스의 무화를 촉진시키고 밸브면의 점착물 생성을 억제하며 대기 오염물질의 배출을 저감시킬 수 있도록 된 가솔린 엔진의 흡기밸브를 제공하는 것을 그 목적으로 한다.The present invention is designed to solve the problems and the closed end of the conventional intake valve as described above, to promote the atomization of the fuel gas, to suppress the formation of adhesive on the valve surface and to reduce the emission of air pollutants It is an object to provide an intake valve of a gasoline engine.
본 고안의 상기와 같은 목적은, 밸브헤드와, 밸브스템으로 구성되는 흡기밸브에 있어서, 그 일측 내부에 중공부가 형성됨으로써 중심선상으로부터 일정한 편심량만큼 무게중심이 이동되어 형성되는 것을 특징으로 하는 가솔린 엔진의 흡기밸브를 제공함으로 달성된다.The above object of the present invention is a gasoline engine, characterized in that in the intake valve consisting of a valve head and a valve stem, a hollow portion is formed inside one side thereof so that the center of gravity is moved by a predetermined eccentricity from a center line. By providing an intake valve of.
이하, 본 고안의 바람직한 실시예에 대하여 첨부한 도면을 참조로 하여 더욱 상세히 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.
제3도는 본 고안에 따른 흡기밸브와 그의 작동관계를 도시하는 도면이다. 이에 따르면 본 고안에 따른 흡기밸브(20)가 밸브시트(21)에 설치되어 개폐되도록 되어 있고, 이 개폐를 위해 흡기밸브(20)의 상부에는 캠(22)이 작동되도록 되어 있다. 또한, 흡기밸브(20)의 자동복귀에 따른 폐쇄를 위하여 스프링(23)이 설치되어 있다.3 is a view showing the operation relationship between the intake valve according to the present invention. According to this, the intake valve 20 according to the present invention is installed on the valve seat 21 to open and close, and the cam 22 is operated on the upper portion of the intake valve 20 for opening and closing. In addition, a spring 23 is provided for closing due to the automatic return of the intake valve 20.
상기 흡기밸브(20)는 밸브헤드(20a)와 밸브스템(20b)으로 구성되는데, 본 고안에 따른 밸브스템(20b)은 그 내부의 특정부위가 중공화 되도록 형성된다. 좀더 상세히 설명하면, 흡기밸브(20)의 무게중심이 그 중심선상(종래 밸브의 무게중심선상)인 M의 위치에서 일측으로 편심량 e만큼 떨어진 M'의 선상에 놓이도록 일측을 중공화 시킨다. 따라서, 도시된 바와같이 중공부(B)가 형성되는데, 중공부(B)는 밸브헤드(20a)로부터 밸브의 상당부, 즉 밸브스템(20b)까지 연장되도록 형성된다. 이때의 중공부(B)는 밀폐된 공간을 형성한다.The intake valve 20 is composed of a valve head 20a and a valve stem 20b, the valve stem 20b according to the present invention is formed so that a specific portion therein is hollowed out. In more detail, one side of the intake valve 20 is hollowed out so that the center of gravity of the intake valve 20 lies on the line of M 'which is separated by one eccentricity e to one side at the position of M, which is on the center line (on the center of gravity of the conventional valve). Therefore, as shown, the hollow portion B is formed, and the hollow portion B is formed to extend from the valve head 20a to a substantial portion of the valve, that is, the valve stem 20b. The hollow portion B at this time forms a closed space.
상기와 같이 형성되는 본 고안에 따른 흡기밸브(20)는 동일 재질로 일체화되도록 형성한다.Intake valve 20 according to the present invention is formed as described above is formed to be integrated with the same material.
이와같이 이루어진 상기 흡기밸브(20)는 편심된 무게중심으로 인하여 다음과 같이 작동한다.The intake valve 20 made as described above operates as follows due to the eccentric center of gravity.
제3도를 참조할 때, 캠(22)이 구동하면 흡기밸브(20)가 하강하면서 개방된다. 이때, 상기 흡기밸브(20)는 무게중심 편심량 e에 의해 회전하면서 열리게 된다. 이에 따라 밸브헤드(20a)면에 점착된 연료등의 혼합기가 밸브시일을 통해 흘러 엔진오일등이 원심력에 의해 밸브헤드(20a)면을 이탈하게 된다. 또는 이 과정에서 상기 혼합기에는 흡기밸브(20)의 회전에 의해 맴돌이(swirl)현상이 발생된다. 혼합기의 맴돌이 현상은 공기와 연료를 골고루 혼합시켜서 무화를 촉진시킨다. 이와같이 하여 매연이 감소되고 기관의 연비가 향상될 수 있다.Referring to FIG. 3, when the cam 22 is driven, the intake valve 20 is lowered and opened. At this time, the intake valve 20 is opened while rotating by the center of gravity eccentricity e. As a result, a mixture of fuel or the like adhered to the valve head 20a flows through the valve seal, and the engine oil and the like leaves the valve head 20a surface by centrifugal force. Or in this process, a swirl phenomenon occurs due to the rotation of the intake valve 20 in the mixer. The eddy effect of the mixer promotes atomization by mixing air and fuel evenly. In this way, soot can be reduced and the fuel economy of the engine can be improved.
상기 흡기밸브(20)의 복귀시는 스프링(23)의 복원력으로 밸브헤드(20a)의 상부면이 밸브시트(21)에 안착됨으로서 폐쇄상태가 된다. 이때에도 상기 흡기밸브(20)는 회전상승하게 된다.When the intake valve 20 returns, the upper surface of the valve head 20a is seated on the valve seat 21 by the restoring force of the spring 23, thereby closing. At this time, the intake valve 20 is rotated to increase.
이상에서 설명한 바와같이 본 고안에 따른 가솔린 엔진의 흡기밸브는 중공부를 갖고 무게중심이 편심되어 있어서, 캠에 의한 개폐시 자체적으로 회전하므로 밸브헤드면에 혼합기나 엔진오일등에 의한 점착물이 끼이지 않게 되고, 혼합기의 맴돌이 현상을 발생시켜 무화를 촉진시킨다. 따라서, 대기오염물질의 생성을 저감시키고 자동차에 있어서는 주행성이 향상되며(특히 한랭시) 기관의 중량을 저감시키는 등의 탁월한 효과가 제공된다.As described above, the gas intake valve of the gasoline engine according to the present invention has a hollow portion and has a center of gravity, and rotates itself when opening and closing by a cam, so that adhesives by a mixer or engine oil are not caught on the valve head surface. The eddy phenomenon of the mixer is generated to promote atomization. Therefore, excellent effects are provided such as reducing the production of air pollutants, improving the running performance in automobiles (especially during cold), and reducing the weight of engines.
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KR2019930029629U KR0132588Y1 (en) | 1993-12-24 | 1993-12-24 | Intake valve of gasoline engine |
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KR2019930029629U KR0132588Y1 (en) | 1993-12-24 | 1993-12-24 | Intake valve of gasoline engine |
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KR950019223U KR950019223U (en) | 1995-07-24 |
KR0132588Y1 true KR0132588Y1 (en) | 1998-12-15 |
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KR2019930029629U KR0132588Y1 (en) | 1993-12-24 | 1993-12-24 | Intake valve of gasoline engine |
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