KR200161261Y1 - Cooling structure of valve open-close device for a vehicle's engine - Google Patents

Cooling structure of valve open-close device for a vehicle's engine Download PDF

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Publication number
KR200161261Y1
KR200161261Y1 KR2019960063930U KR19960063930U KR200161261Y1 KR 200161261 Y1 KR200161261 Y1 KR 200161261Y1 KR 2019960063930 U KR2019960063930 U KR 2019960063930U KR 19960063930 U KR19960063930 U KR 19960063930U KR 200161261 Y1 KR200161261 Y1 KR 200161261Y1
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KR
South Korea
Prior art keywords
valve
rocker arm
cooling
lifter
cam
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KR2019960063930U
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Korean (ko)
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KR19980050754U (en
Inventor
김규완
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정몽규
현대자동차주식회사
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Priority to KR2019960063930U priority Critical patent/KR200161261Y1/en
Publication of KR19980050754U publication Critical patent/KR19980050754U/en
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Publication of KR200161261Y1 publication Critical patent/KR200161261Y1/en

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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
    • F01L3/12—Cooling of valves
    • F01L3/16—Cooling of valves by means of a fluid flowing through or along valve, e.g. air
    • F01L3/18—Liquid cooling of valve
    • 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
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/20—Adjusting or compensating clearance
    • F01L1/205—Adjusting or compensating clearance by means of shims or the like
    • 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
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/12—Transmitting gear between valve drive and valve
    • F01L1/14—Tappets; Push rods
    • 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
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/12—Transmitting gear between valve drive and valve
    • F01L1/18—Rocking arms or levers

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Abstract

자동차 엔진의 밸브 개폐기구 냉각구조에 관한 것으로서, 특히 엔진에 의해 회전되는 캠과, 로커암 및 밸브 스템부의 열부하를 감소시키기 위한 것이다.The present invention relates to a cooling mechanism of a valve opening and closing mechanism of an automobile engine, and more particularly, to reduce heat load of a cam rotated by an engine, a rocker arm, and a valve stem portion.

이를 위하여, 본 고안은 흡, 배기 밸브(3)의 내부에 소정의 공간을 형성하고, 내부에 냉각수가 주입된 냉각 챔버(5)와, 그 냉각 챔버의 내부에 스프링(6)을 개재하여, 상측 방향으로 힘을 받도록 탄지된 보조 밸브체(6)와, 그 보조 밸브체에 형성된 냉각수 분사 구멍(6a)과, 상기 보조 밸브체의 단부에 접촉되고, 밸브 스템부(3a)에 결합되며, 로커암(2)에 의해 승강되는 밸브 리프터(7)를 포함하여 구성된다.To this end, the present invention forms a predetermined space inside the intake and exhaust valves 3, through the cooling chamber 5 into which the coolant is injected, and the spring 6 inside the cooling chamber, An auxiliary valve body 6 which is supported to receive a force in an upward direction, a cooling water injection hole 6a formed in the auxiliary valve body, and an end of the auxiliary valve body, and are coupled to the valve stem portion 3a, And a valve lifter 7 which is lifted by the rocker arm 2.

이러한 구성에 따라, 캠 및 로커암에 의해 밸브 리프터가 승강 동작되면, 그에 연동되는 보조 밸브체가 하강되면서, 냉각 챔버에 수용된 냉각수를 분사 구멍을 통해 상측으로 분출한다. 따라서, 캠에 의해 승강되는 로커암과의 마찰에 의해 발생되는 밸브 리프터의 열부하는 냉각수에 의해 감소된다.According to this configuration, when the valve lifter is moved up and down by the cam and rocker arm, the auxiliary valve body interlocked therewith is lowered, and the coolant contained in the cooling chamber is ejected upward through the injection hole. Therefore, the heat load of the valve lifter generated by the friction with the rocker arm lifted by the cam is reduced by the cooling water.

Description

자동차 엔진의 밸브 개폐기구 냉각구조Cooling structure of valve switchgear of automobile engine

본 고안은 자동차 엔진의 밸브 개폐기구 냉각구조에 관한 것으로서, 특히 캠의 회전운동을 왕복운동으로 변환시키는 밸브 리프터의 열부하를, 냉각수를 이용하여 냉각시키는 자동차 엔진의 밸브 개폐기구 냉각구조에 관한 것이다.The present invention relates to a cooling mechanism of the valve opening and closing mechanism of an automobile engine, and more particularly, to a valve opening and closing mechanism cooling structure of an automobile engine for cooling a heat load of a valve lifter for converting a rotational movement of a cam into a reciprocating motion using cooling water.

주지된 바와 같이, 내연기관을 대표하는 자동차의 엔진은 피스톤, 커넥팅 로드, 크랭크 기구로 구성되며, 상기 피스톤이 진원통으로 된 실린더안에서 직선 왕복운동하여 커넥팅 로드를 통해 크랭크 기구를 회전시키며, 상기 크랭크 기구의 회전력이 동력전달장치를 통해 바퀴를 구동하게 된다.As is well known, the engine of an automobile representing an internal combustion engine is composed of a piston, a connecting rod, and a crank mechanism, which linearly reciprocates in a cylinder having a circular cylinder to rotate a crank mechanism through a connecting rod, wherein the crank mechanism The rotational force of the drive the wheels through the power train.

이러한 엔진은 실린더헤드와 피스톤의 상측 공간에 형성된 연소실로 혼합기를 공급하거나 연소가스를 배출시키기 위해, 흡,배기 포트를 개폐하는 흡,배기 밸브를 구비하여 이루어진다.The engine includes an intake and exhaust valve for opening and closing the intake and exhaust ports for supplying a mixer or exhausting the combustion gas to the combustion chamber formed in the upper space of the cylinder head and the piston.

종래 공지된 흡,배기 밸브는 제1도에 상세하게 도시된 바와 같이, 엔진의 크랭크 기구에 연동되는 밸브 개폐기구에 의해 작동하며, 크랭크 기구와 벨트로 연결된 캠 샤프트가 편심 캠(1)을 회전시키면, 그 캠(1)에 접촉된 로커암(2)이 로커암 샤프트(2a)를 축으로 승강되고, 그 로커암(2)의 단부에 의해 밸브(3)가 흡,배기 포트를 개폐시킴으로써, 피스톤의 상,하 운동에 의해 생성되는 엔진 부압으로 외기를 흡입하고, 연소 가스를 배기하게 된다. 로커암(2)과 흡,배기 밸브(3)의 사이에는 상기 캠의 회전운동을 왕복운동으로 변환시켜 밸브에 전달하는 밸브 리프터(4)가 설치된다.Conventionally known intake and exhaust valves are operated by a valve opening and closing mechanism interlocked with the crank mechanism of the engine, as shown in detail in FIG. 1, and a cam shaft connected to the crank mechanism and the belt rotates the eccentric cam 1. Then, the rocker arm 2 in contact with the cam 1 is raised and lowered about the rocker arm shaft 2a, and the valve 3 opens and closes the intake and exhaust ports by the end of the rocker arm 2. The outside air is sucked by the engine negative pressure generated by the up and down movement of the piston, and the combustion gas is exhausted. Between the rocker arm 2 and the intake / exhaust valve 3, a valve lifter 4 for converting the rotational motion of the cam into a reciprocating motion and transmitting the valve to the valve is provided.

밸브 리프터(4)는 밸브(3)의 스템 엔드(3a)에 접촉되며 캡(cap) 모양으로 형성된다.The valve lifter 4 is in contact with the stem end 3a of the valve 3 and is formed in a cap shape.

상술한 종래 기술의 밸브 리프터에 있어서, 캠에 의해 구동되는 로커암과 밸브 리프터의 접촉부에서는 부품들간의 마찰 및 충격에 의해 열부하가 발생되는 문제점이 있다.In the above-described valve lifter of the prior art, there is a problem that heat load is generated by friction and impact between components at the rocker arm driven by the cam and the contact portion of the valve lifter.

이러한 종래 기술의 문제점을 해소하기 위한 목적에서 제안된 것으로, 본 고안은 밸브 리프터로 냉각수를 공급하여, 캠 및 로커암과의 접촉부에서 발생되는 열부하를 방지할 수 있도록 한 자동차 엔진의 밸브 개폐기구 냉각구조를 제안한다.Proposed to solve the problems of the prior art, the present invention is to supply the cooling water to the valve lifter, cooling the valve opening and closing mechanism of the automotive engine to prevent the heat load generated in the contact portion with the cam and rocker arm Suggest a structure.

제1도는 일반적인 자동차 엔진의 밸브 개폐기구를 도시한 단면도.1 is a cross-sectional view showing a valve opening and closing mechanism of a general automotive engine.

제2도는 본 고안에 의한 자동차 엔진의 밸브 개폐기구 냉각구조를 도시한 단면도.2 is a cross-sectional view showing a cooling mechanism of the valve opening and closing mechanism of the automobile engine according to the present invention.

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

1 : 캠 2 : 로커암1: Cam 2: Rocker Arm

3 : 흡, 배기밸브 5 : 냉각 챔버3: intake and exhaust valve 5: cooling chamber

6 : 보조 밸브체 6a : 분사 구멍6: auxiliary valve body 6a: injection hole

7 : 밸브 리프터 8 : 리프터 바디7: valve lifter 8: lifter body

9 : 간극 조정볼트9: clearance adjusting bolt

이하, 본 고안을 실현하기 위한 바람직한 실시예를 첨부 도면에 의거하여 보다 상세하게 설명한다.Hereinafter, preferred embodiments for realizing the present invention will be described in more detail with reference to the accompanying drawings.

제2도는 본 실시예에 관련된 자동차 엔진의 밸브 개폐기구 냉각구조를 도시한 단면도이다.2 is a cross-sectional view showing the valve opening and closing mechanism cooling structure of the automobile engine according to the present embodiment.

본 실시예를 설명함에 있어, 종래 기술에서 인용된 도면과 동일한 본 실시예의 구성에 대해서는 설명의 명료성을 위해 동일한 부호를 사용한다.In describing the present embodiment, the same reference numerals are used for the clarity of the description of the configuration of the present embodiment that is the same as the drawings cited in the prior art.

도면에서의 설명 부호 (1)은 캠, (2)는 로커암, (3)은 흡기 혹은 배기 밸브를 지칭한다.In the drawings, reference numeral 1 denotes a cam, 2 denotes a rocker arm, and 3 denotes an intake or exhaust valve.

엔진의 구동력으로 회전되는 캠(1)과, 그 캠(1)에 연동되어 흡,배기 포트를 개방시키는 흡,배기 밸브(3)의 사이에는 캠(1)의 회전운동을 밸브(3)의 상,하 왕복운동으로 변환시키는 로커암(2)이 설치되고, 그 로커암(2)과 밸브(3)의 스템부(3a)의 사이에는 밸브 리프터(7)가 설치된다.The cam 1 rotates between the cam 1 rotated by the driving force of the engine and the intake / exhaust valve 3 interlocked with the cam 1 to open the intake and exhaust ports. A rocker arm 2 for converting the up and down reciprocating motion is provided, and a valve lifter 7 is provided between the rocker arm 2 and the stem portion 3a of the valve 3.

이와 같은 구성들을 포함하는 자동차 엔진의 밸브 개폐기구에 있어서, 본 실시예는 상기한 캠(1)과 로커암(2) 및 밸브 리프터(7)의 접촉부에서 발생되는 마찰 및 열부하를 감소시키기 위해, 냉각수단을 제안한다.In the valve opening and closing mechanism of an automobile engine including such configurations, the present embodiment is designed to reduce friction and heat load generated at the contact portions of the cam 1 and the rocker arm 2 and the valve lifter 7, We propose cooling means.

보다 구체적으로, 흡,배기 밸브(3)의 내부에는 소정의 공간이 형성되어 냉각수가 주입되는 냉각 챔버(5)가 형성된다.More specifically, a predetermined space is formed inside the intake and exhaust valve 3 to form a cooling chamber 5 into which coolant is injected.

냉각 챔버(5)의 내부에는 스프링(6)을 개재하여, 상측 방향으로 힘을 받도록 탄지된 보조 밸브체(6)가 설치된다. 보조 밸브체(6)의 하측 단부에는 냉각수의 분사 구멍(6a)이 형성된다.Inside the cooling chamber 5, an auxiliary valve body 6 which is supported so as to receive a force in an upward direction is provided via a spring 6. The injection hole 6a of cooling water is formed in the lower end part of the auxiliary valve body 6. As shown in FIG.

상기한 보조 밸브체(6)의 상측 단부에는 밸브 스템부(3a)에 결합되며, 로커암(2)에 의해 승강되는 밸브 리프터(7)가 설치된다.The upper end of the auxiliary valve body 6 is provided with a valve lifter 7 which is coupled to the valve stem portion 3a and lifted by the rocker arm 2.

밸브 리프터(7)는 밸브 스템부(3a)에 접촉되는 리프터 바디(8)와, 그 리프터 바디(8)에 나사 결합되는 간극 조정볼트(9)로 구성된다.The valve lifter 7 is composed of a lifter body 8 in contact with the valve stem portion 3a and a gap adjusting bolt 9 screwed to the lifter body 8.

이렇게 구성된 본 실시예의 밸브 개폐기구 냉각구조는, 캠(1) 및 로커암(2)에 연동되어 밸브 리프터(7)가 하강 동작되면, 그에 연동되는 보조 밸브체(6)가 하강되면서, 냉각 챔버(5)에 수용된 냉각수를 분사 구멍(6a)을 통해 상측으로 분출한다.The valve opening / closing cooling structure of the present embodiment configured as described above, when the valve lifter 7 moves downward in cooperation with the cam 1 and the rocker arm 2, while the auxiliary valve body 6 interlocked therewith is lowered, the cooling chamber. The cooling water accommodated in (5) is jetted upward through the injection hole 6a.

따라서, 캠(1)에 의해 승강되는 로커암(2)과 접촉 및 마찰되는 밸브 리프터(7)는 냉각수에 의해 냉각되므로서, 마찰에 의한 열부하를 감소시킨다.Thus, the valve lifter 7 in contact with and rubbing with the rocker arm 2 lifted by the cam 1 is cooled by the coolant, thereby reducing the heat load due to friction.

이상에서 설명된 구성 및 작용을 통하여 알 수 있는 바와 같이, 본 고안에 의한 자동차 엔진의 밸브 개폐기구 냉각구조는 종래 기술의 문제점을 실질적으로 해소한다.As can be seen through the configuration and action described above, the valve opening mechanism cooling structure of the automobile engine according to the present invention substantially solves the problems of the prior art.

즉, 본 고안에 의하면 캠, 로커암 및 밸브 리프터의 마찰에 의한 열부하가 저감되는 효과를 얻을 수 있다.That is, according to the present invention, it is possible to obtain the effect of reducing the heat load caused by friction of the cam, rocker arm and valve lifter.

따라서, 본 고안에 의하면 캠, 로커암 및 밸브 리프터의 마모를 방지할 수 있고, 열부하에 의한 변형을 방지하는 효과도 아울러 얻게 된다.Therefore, according to the present invention, wear of the cam, rocker arm and valve lifter can be prevented, and the effect of preventing deformation due to heat load is also obtained.

또한, 열부하에 의한 변형을 방지하므로서, 밸브의 오조작을 방지할 수 있다.In addition, it is possible to prevent misoperation of the valve by preventing deformation due to thermal load.

한편, 본 고안은 상술한 특정의 바람직한 실시예에 한정되지 아니하며, 실용신안등록 청구의 범위에서 청구하는 본 고안은 요지를 벗어남이 없이 당해 고안이 속하는 분야에서 통상의 지식을 가진 자라면 누구든지 다양한 변경 실시가 가능할 것이다.On the other hand, the present invention is not limited to the above-described specific preferred embodiment, the present invention claimed in the utility model registration claims without departing from the gist of the present invention, anyone of ordinary skill in the art Modifications may be made.

Claims (2)

엔진의 구동력으로 회전되는 캠과, 그 캠의 회전운동을 직선 왕복운동으로 변환시키는 로커암과, 그 로커암에 연동되어 실린더헤드의 내부에서 상, 하로 이동되면서 흡, 배기 포트를 개폐하는 흡, 배기 밸브를 포함하여 구성된 자동차 엔진의 밸브 개폐기구에 있어서, 상기 흡, 배기 밸브의 내부에 소정의 공간을 형성하고, 내부에 냉각수가 주입된 냉각 챔버와, 그 냉각 챔버의 내부에 스프링을 개재하여, 상측 방향으로 힘을 받도록 탄지된 보조 밸브체와, 그 보조 밸브체에 형성된 냉각수 분사 구멍과, 상기 보조 밸브체의 단부에 접촉되고, 밸브 스템부에 결합되며, 로커암에 의해 승강되는 밸브 리프터를 포함하여 구성된 것을 특징으로 하는 자동차 엔진의 밸브 개폐기구 냉각구조.A cam rotated by the driving force of the engine, a rocker arm that converts the rotational movement of the cam into a linear reciprocating motion, and a suction that opens and closes the intake and exhaust ports while moving up and down in the cylinder head in conjunction with the rocker arm. In the valve opening and closing mechanism of an automobile engine including an exhaust valve, a predetermined space is formed inside the intake and exhaust valves, and a cooling chamber into which cooling water is injected, and a spring inside the cooling chamber. And a valve lifter which is in contact with an auxiliary valve body that is supported to receive a force in an upward direction, a cooling water injection hole formed in the auxiliary valve body, an end of the auxiliary valve body, is coupled to a valve stem, and is elevated by a rocker arm. Valve opening and closing mechanism cooling structure of the vehicle engine, characterized in that comprising a. 제1항에 있어서, 상기 밸브 리프터는 밸브 스템부에 접촉되는 리프터 바디와, 그 리프터 바디에 나사 결합되는 간극 조정볼트로 구성된 것을 특징으로 하는 자동차 엔진의 밸브 개폐기구 냉각구조.2. The valve opening and cooling mechanism of an automobile engine according to claim 1, wherein the valve lifter comprises a lifter body in contact with the valve stem and a gap adjusting bolt screwed to the lifter body.
KR2019960063930U 1996-12-30 1996-12-30 Cooling structure of valve open-close device for a vehicle's engine KR200161261Y1 (en)

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KR2019960063930U KR200161261Y1 (en) 1996-12-30 1996-12-30 Cooling structure of valve open-close device for a vehicle's engine

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KR20100065601A (en) * 2008-12-08 2010-06-17 삼미금속 주식회사 Device for cooling a exhaust valve
CN117211942B (en) * 2023-11-09 2024-01-02 常州市常和机械有限公司 Automatic circulating water cooling structure of rocker arm

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