KR100223542B1 - Valve implement - Google Patents

Valve implement Download PDF

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Publication number
KR100223542B1
KR100223542B1 KR1019960068102A KR19960068102A KR100223542B1 KR 100223542 B1 KR100223542 B1 KR 100223542B1 KR 1019960068102 A KR1019960068102 A KR 1019960068102A KR 19960068102 A KR19960068102 A KR 19960068102A KR 100223542 B1 KR100223542 B1 KR 100223542B1
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South Korea
Prior art keywords
valve
oil
tappet
engine
spring
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KR1019960068102A
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Korean (ko)
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KR19980049393A (en
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안호상
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정몽규
현대자동차주식회사
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Priority to KR1019960068102A priority Critical patent/KR100223542B1/en
Publication of KR19980049393A publication Critical patent/KR19980049393A/en
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Publication of KR100223542B1 publication Critical patent/KR100223542B1/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
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
    • 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
    • F01L3/10—Connecting springs to valve members

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)

Abstract

본 발명의 목적은 가변스프링을 이용하여 엔진의 저속 및 고속운전 영역에서의 밸브의 작동응답성을 최적으로 향상시킨 구조의 밸브기구를 제공하는데 있다.SUMMARY OF THE INVENTION An object of the present invention is to provide a valve mechanism having a structure in which an operation response of a valve is optimally improved in a low speed and high speed operation region of an engine using a variable spring.

상기한 목적을 달성하기 위한 본 발명의 수단은 흡기포트 또는 배기포트를 개폐하는 밸브(1);와 캠축(3)의 회전운동을 상하운동으로 바꾸어 상기 밸브(1)에 전달하는 실린더형상의 밸브(4)태핏;과Means of the present invention for achieving the above object is a valve (1) for opening and closing the intake port or exhaust port; and a cylindrical valve for transferring the rotational movement of the cam shaft (3) to the vertical movement to the valve (1) (4) tappet; and

상기 밸브태핏(4)과 밸브스프링시트(5) 사이에서 탄발되는 주밸브스프링(6); 과A main valve spring (6) that is shot between the valve tappet (4) and the valve spring seat (5); and

상기 밸브태핏(4)에 밸브스템(2)을 따라 축방향으로 이동하도록 수용되는 플런저(9);와A plunger (9) accommodated in the valve tappet (4) to move axially along the valve stem (2); and

상기 플런저(9)와 밸브스프링시트(5) 사이에서 탄발되는 보조밸브스프링(11); 과Auxiliary valve spring (11) that is shot between the plunger (9) and the valve spring seat (5); and

상기 밸브태핏(4)내에 형성되는 오일챔버(10)에 오일펌프(16)로부터 급송되는 유압을 공급하는 오일공급라인(12); 과An oil supply line (12) for supplying hydraulic pressure supplied from the oil pump (16) to the oil chamber (10) formed in the valve tappet (4); and

상기 오일공급라인(12)을 차단 또는 개방하는 오일밸브(13); 와An oil valve 13 for blocking or opening the oil supply line 12; Wow

및 엔진의 운전조건에 따라 상기 오일밸브(13)와 오일펌프(16)의 작동을 제어하는 전자제어장치(14); 와를 포함하여 구성되어 있음을 특징으로 한다.And an electronic controller 14 for controlling the operation of the oil valve 13 and the oil pump 16 according to the operating conditions of the engine. It characterized in that it is configured to include.

Description

밸브기구Valve mechanism

본 발명은 캠축의 회전운동을 상하운동으로 바꾸어 엔진의 흡기포트 및 배기포트를 개폐하는 밸브기구에 관한 것이다.The present invention relates to a valve mechanism for opening and closing the intake port and exhaust port of the engine by changing the rotational movement of the camshaft to the vertical movement.

종래 밸브기구는 도 2에 도시하는 것과같이 흡배기포트를 개폐하는 밸브(21)와, 밸브스프링시트(22)와 스프링 리테이너(23)와의 사이에 개재되는 밸브스프링(24), 밸브태핏(25, 밸브리프터)등으로 구성되어 있다.2. Description of the Related Art A conventional valve mechanism includes a valve 21 for opening and closing an intake and exhaust port, a valve spring 24 interposed between a valve spring seat 22 and a spring retainer 23, as shown in FIG. Valve lifter).

상기한 밸브스프링(24)은 탄성력이 풍부한 니켈강, 또는 크롬강을 사용하지만 장력이 너무 강하면 밸브(21)를 개방하는데 큰 힘이 필요하기 때문에 출력의 손실을 가져오고 밸브기구의 마모를 촉진하며 반대로 장력이 너무 약하면 밸브(21)의 밀착성이 저하되어 흡입밸브에서는 압축부족으로 엔진출력이 저하하고 배기밸브에서는 연소가스의 블로바이(blow by)에 의한 소손과 밸브서징을 일으키는 원인이 된다.The above-mentioned valve spring 24 uses nickel steel or chromium steel, which is rich in elasticity, but if the tension is too strong, a large force is required to open the valve 21, resulting in a loss of output, promoting wear of the valve mechanism, and vice versa. If too weak, the adhesiveness of the valve 21 is lowered, the engine output is lowered due to insufficient compression in the intake valve, and the exhaust valve causes burnout and valve surging due to blow-by of combustion gas.

그러나 종래의 밸브스프링은 엔진의 고 rpm을 기준으로 그 탄성력 및 강도가 설정되어 있어 특히 저속운전 영역에서 엔진의 성능을 저하시키는 문제점이 있게 된다.However, in the conventional valve spring, its elastic force and strength are set based on the high rpm of the engine, and thus there is a problem of degrading the performance of the engine, especially in a low speed operation region.

이에 본 발명은 상기한 문제점을 감안하여 제안된 것으로서 그의 목적으로 하는 바는 가변스프링을 이용하여 엔진의 저속 및 고속운전 영역에서의 밸브의 작동응답성을 최적으로 향상시킨 구조의 밸브기구를 제공하는데 있다.Accordingly, the present invention has been proposed in view of the above-described problems, and an object thereof is to provide a valve mechanism having a structure in which an operation response of a valve is optimally improved in a low speed and high speed operation region of an engine using a variable spring. have.

상기한 목적을 달성하기 위한 본 발명의 수단은Means of the present invention for achieving the above object is

흡기포트 또는 배기포트를 개폐하는 밸브; 와A valve for opening and closing an intake port or an exhaust port; Wow

캠축의 회전운동을 상하운동으로 바꾸어 상기 밸브에 전달하는 실린더형상의 밸브태핏; 과A cylindrical valve tappet which transfers the rotational movement of the camshaft to the vertical movement to the valve; and

상기 밸브태핏과 밸브스프링시트 사이에서 탄발되는 주밸브스프링; 과A main valve spring elastically disposed between the valve tappet and the valve spring seat; and

상기 밸브태핏에 밸브스템을 따라 축방향으로 이동하도록 수용되는 플런저;와A plunger accommodated in the valve tappet to move axially along a valve stem; and

상기 플런저와 밸브스프링시트 사이에서 탄발되는 보조밸브스프링; 과An auxiliary valve spring that is elastically disposed between the plunger and the valve spring seat; and

상기 밸브태핏내에 형성되는 오일챔버에 오일펌프로부터 급송되는 유압을 공급하는 오일공급라인; 과An oil supply line for supplying hydraulic pressure supplied from an oil pump to an oil chamber formed in the valve tappet; and

상기 오일공급라인을 차단 또는 개방하는 오일밸브; 와 및An oil valve for blocking or opening the oil supply line; With and

엔진의 운전조건에 따라 상기 오일밸브와 오일펌프의 작동을 제어하는 전자제어장치;와를 포함하여 구성되어 있음을 특징으로 한다.And an electronic control device for controlling the operation of the oil valve and the oil pump according to the engine operating conditions.

도 1은 본 발명에 의한 밸브기구의 일실시예를 나타내는 도면1 is a view showing an embodiment of a valve mechanism according to the present invention

도 2는 종래기술2 is a prior art

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

1 : 밸브 2 : 밸브스템1 valve 2 valve stem

3 : 캠축 4 : 밸브태핏3: camshaft 4: valve tappet

5 : 밸브스프링시트 6 : 주밸브스프링5: Valve spring seat 6: Main valve spring

7 : 요홈 8 : 내벽면7: groove 8: inner wall

9 : 플런저 10 : 오일챔버9: plunger 10: oil chamber

11 : 보조밸브스프링 12 : 오일공급라인11: auxiliary valve spring 12: oil supply line

13 : 오일밸브 14 : 전자제어장치13 oil valve 14 electronic control device

15 : rpm게이지 16 : 오일펌프15: rpm gauge 16: oil pump

17 : 저장탱크17: storage tank

이하 본 발명의 실시예를 첨부한 도면을 참조하여 설명한다.Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

도 1은 본 발명에 의한 밸브기구의 일실시예를 나타내는 도면으로 도면에 있어서 부호 1은 흡기포트 또는 배기포트를 개폐하는 밸브이다.1 is a view showing an embodiment of a valve mechanism according to the present invention. In the drawing, reference numeral 1 denotes a valve for opening and closing an intake port or an exhaust port.

상기 밸브(1)의 밸브스템(2) 엔드부에는 캠축(3)의 회전운동을 직선운동을 바꾸어 밸브(1)에 전달해주는 실린더형상의 밸브태핏(4)이 밀착하여 있으며 밸브태핏(4)과 밸브스프링시트(5)와의 사이에는 주밸브스프링(6)이 탄발되도록 개재되어 있으며 주밸브스프링(6)의 벗어남을 방지하기 위해 밸브태핏(4)에 형성된 요홈(7)내에 그의 끝단이 끼워져있다.A valve tappet (4) having a cylindrical shape is in close contact with the end of the valve stem (2) of the valve (1) to transfer the rotational movement of the cam shaft (3) to the valve (1) by transmitting a linear motion. The main valve spring 6 is interposed between the valve spring seat 5 and the valve spring seat 5, and an end thereof is fitted in a recess 7 formed in the valve tappet 4 to prevent the main valve spring 6 from escaping.

상기 밸브태핏(4)의 공간부에는 내벽면(8) 및 밸브스템(2)의 안내를 따라 축방향의 이동이 허용가능하게 플런저(9)가 긴밀하게 수용되며 상기 밸브태핏(4)의 공간부는 오일챔버(10)로 형성되어 유압실린더로서 기능한다.The plunger 9 is tightly received in the space portion of the valve tappet 4 so as to allow movement in the axial direction along the guide of the inner wall surface 8 and the valve stem 2, and the space of the valve tappet 4. The part is formed by the oil chamber 10 and functions as a hydraulic cylinder.

상기 플런저(9)와 밸브스프링시트(5)와의 사이에는 보조밸브스프링(11)이 탄발토록 개재되어 있으며 오일공급라인(12)을 통해 오일펌프로부터 급송되는 오일이 오일챔버(10)에 유입될 때 상기 플런저(9)가 하방으로 이동하여 보조밸브스프링(11)을 압축하므로써 보조밸브스프링(11)에 탄성력을 축적시키게 된다.An auxiliary valve spring 11 is interposed between the plunger 9 and the valve spring seat 5 so that the oil supplied from the oil pump through the oil supply line 12 may flow into the oil chamber 10. When the plunger 9 moves downward to compress the auxiliary valve spring 11, the elastic force is accumulated in the auxiliary valve spring 11.

상기 오일공급라인(12)에는 오일밸브(13)가 마련되어 있으며 전자제어장치(14)의 제어에 따라 오일밸브(13)를 개폐하게 된다.The oil supply line 12 is provided with an oil valve 13 to open and close the oil valve 13 under the control of the electronic controller 14.

그리고 오일밸브(13)로서는 전기적으로 응답하는 솔레노이드밸브를 사용하는 것이 바람직하며 오일밸브(13)를 제어하기 위하여 rpm게이지(15)로부터 측정된 엔진의 회전수 정보를 받아 엔진의 고속운전시에는 전자제어장치(14)가 오일펌프(16)를 구동하고 오일밸브(13)를 개방토록 제어하여 오일챔버(10)에 오일을 공급하므로써 플런저(9)로 하여금 보조밸브스프링(11)을 압축하도록 하여 주밸브스프링(6)과 함께 스프링 상수를 증가시키게 된다. 그리고 그 상태에서 오일밸브(13)를 폐쇄하고 오일펌프 구동을 중지하므로써 오일챔버(10)내의 유압을 유지하여 보조밸브스프링(11)의 탄성력을 유지할 수 있게된다.In addition, it is preferable to use an electrically responsive solenoid valve as the oil valve 13, and in order to control the oil valve 13 by receiving the engine speed information measured from the rpm gauge 15, The control device 14 drives the oil pump 16 and opens the oil valve 13 to supply oil to the oil chamber 10 so that the plunger 9 compresses the auxiliary valve spring 11. The spring constant is increased with the main valve spring 6. In this state, by closing the oil valve 13 and stopping the oil pump driving, it is possible to maintain the hydraulic pressure in the oil chamber 10 to maintain the elastic force of the auxiliary valve spring 11.

이에따라 고속운전 영역에서의 밸브(1)의 작동응답성이 향상되며 만일 rpm게이지(15)로부터 측정된 엔진의 회전수가 저속으로 검출되면 전자제어장치(14)는 오일펌프(16)의 가동을 중지하므로써 보조밸브스프링(11)의 탄발력에 의해 플런저(9)가 후퇴하면서 오일챔버(10)내의 오일이 오일탱크(17)내로 귀환되어지게 되며 적절한 시점(엔진의 회전수 정보)에서 오일밸브(13)를 차단하게 된다.Accordingly, the operation response of the valve 1 in the high speed operation region is improved, and if the engine speed measured from the rpm gauge 15 is detected at a low speed, the electronic controller 14 stops the operation of the oil pump 16. As a result, the plunger 9 is retracted by the elastic force of the auxiliary valve spring 11, and the oil in the oil chamber 10 is returned to the oil tank 17. The oil valve (at the engine speed information) 13) will be blocked.

따라서 보조밸브스프링(11)은 탄성력이 급격히 저하되어지게 되며 밸브(1)는 주밸브스프링(6)의 탄성력만으로 또는 여기에 더하여 약해진 보조밸브스프링(11)과의 합력으로 복귀 작동이 일어나게 된다.Therefore, the auxiliary valve spring 11 is suddenly lowered in the elastic force and the valve (1) is a return operation occurs only by the elastic force of the main valve spring 6 or in addition to the weakened auxiliary valve spring (11).

이와같이 엔진 회전수에 비례하여 오일밸브(13)의 개폐제어를 행하므로써 보조밸브스프링(11)이 적절한 탄성력을 갖도록 조정할 수 있음은 물론이다.As such, the auxiliary valve spring 11 can be adjusted to have an appropriate elastic force by performing the opening / closing control of the oil valve 13 in proportion to the engine speed.

이상과 같은 본 발명에 의한 밸브기구에 의하면 주밸브스프링과 엔진의 운전조건에 따라 고속운전시에만 탄성력을 갖는 보조밸브스프링을 설치하므로써 저속운전시에는 주밸브스프링만을 밸브복귀력에 이용하며 고속운전시에는 유압공급에 의해 보조밸브스프링을 압축하여 탄성력을 갖도록 하는 것에 의해서 주밸브스프링과 보조밸브스프링을 합한 탄성력으로 밸브를 작동토록 하므로써 엔진의 운전조건에 맞추어 밸브스프링의 스프링 상수가 변화되어진다.According to the valve mechanism according to the present invention as described above, the main valve spring and the auxiliary valve spring having elastic force only in high speed operation according to the operating conditions of the engine is used to use only the main valve spring for valve return force at low speed operation, and at high speed operation. By regulating the auxiliary valve spring by the hydraulic supply to have elastic force, the spring constant of the valve spring changes according to the engine operating conditions by operating the valve with the elastic force of the main valve spring and the auxiliary valve spring.

이에따라 밸브작동 응답성이 최적으로 향상되어 엔진성능을 높이게 되는 효과가 있다.Accordingly, the valve operation response is optimally improved to increase the engine performance.

Claims (4)

흡기포트 또는 배기포트를 개폐하는 밸브;와Valve for opening and closing the intake port or exhaust port; And 캠축의 회전운동을 상하운동으로 바꾸어 상기 밸브에 전달하는 실린더형상의 밸브태핏;과A cylindrical valve tappet which transfers the rotational movement of the camshaft to the vertical movement to the valve; and 상기 밸브태핏과 밸브스프링시트 사이에서 탄발되는 주밸브스프링;과A main valve spring elasticized between the valve tappet and the valve spring seat; and 상기 밸브태핏에 밸브스템을 따라 축방향으로 이동하도록 수용되는 플런저; 와A plunger accommodated in the valve tappet to move axially along a valve stem; Wow 상기 플런저와 밸브스프링시트 사이에서 탄발되는 보조밸브스프링;과Auxiliary valve spring that is shot between the plunger and the valve spring seat; And 상기 밸브태핏내에 형성되는 오일챔버에 오일펌프로부터 급송되는 유압을 공급하는 오일공급라인;과An oil supply line for supplying hydraulic pressure supplied from an oil pump to an oil chamber formed in the valve tappet; 상기 오일공급라인을 차단 또는 개방하는 오일밸브;와 및An oil valve for blocking or opening the oil supply line; and 엔진의 운전조건에 따라 상기 오일밸브와 오일펌프의 작동을 제어하는 전자제어장치;와를 포함하여 구성되어 있음을 특징으로 하는 밸브기구.And an electronic controller for controlling the operation of the oil valve and the oil pump according to the operating conditions of the engine. 제 1 항에 있어서,The method of claim 1, 상기 보조밸브스프링은 엔진의 고속운전시 오일챔버에 공급되는 유압에 의해 이동하는 플런저에 의해 압축되어 탄성력이 축적되며 엔진의 저속운전시에는 오일챔버내의 오일이 리턴되면서 신장되어 탄성력을 잃게 되는 것임을 특징으로 하는 밸브기구.The auxiliary valve spring is compressed by the plunger that is moved by the hydraulic pressure supplied to the oil chamber during high speed operation of the engine to accumulate elastic force, and during the low speed operation of the engine, the oil in the oil chamber is extended to return and lose the elastic force. Valve mechanism. 제 2 항에 있어서,The method of claim 2, 상기 전자제어장치는 엔진의 회전수를 측정하는 rpm게이지로부터의 운전정보에 의해 오일밸브와 오일펌프를 제어하는 것임을 특징으로 하는 밸브기구.The electronic control device is a valve mechanism, characterized in that for controlling the oil valve and the oil pump by the operation information from the rpm gauge for measuring the rotational speed of the engine. 제 3 항에 있어서,The method of claim 3, wherein 상기 오일밸브는 솔레노이드 밸브인 것을 특징으로 하는 밸브기구.The oil valve is a valve mechanism, characterized in that the solenoid valve.
KR1019960068102A 1996-12-19 1996-12-19 Valve implement KR100223542B1 (en)

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KR100321787B1 (en) * 1999-01-22 2002-02-02 조정남 Imprementation method for preventing cdr loss caused by storage media problem in telecommunication systems
KR100475866B1 (en) * 2001-12-18 2005-03-10 현대자동차주식회사 OHV type Valve system for anti-abrasion

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Publication number Priority date Publication date Assignee Title
JPS58130004U (en) * 1982-02-27 1983-09-02 いすゞ自動車株式会社 Internal combustion engine tappet adjustment device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58130004U (en) * 1982-02-27 1983-09-02 いすゞ自動車株式会社 Internal combustion engine tappet adjustment device

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