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KR20040042588A - oil supply structure of cam shaft - Google Patents

oil supply structure of cam shaft Download PDF

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Publication number
KR20040042588A
KR20040042588A KR1020020071145A KR20020071145A KR20040042588A KR 20040042588 A KR20040042588 A KR 20040042588A KR 1020020071145 A KR1020020071145 A KR 1020020071145A KR 20020071145 A KR20020071145 A KR 20020071145A KR 20040042588 A KR20040042588 A KR 20040042588A
Authority
KR
South Korea
Prior art keywords
oil
cam shaft
coupling
camshaft
oil supply
Prior art date
Application number
KR1020020071145A
Other languages
Korean (ko)
Inventor
김용균
Original Assignee
현대자동차주식회사
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 현대자동차주식회사 filed Critical 현대자동차주식회사
Priority to KR1020020071145A priority Critical patent/KR20040042588A/en
Publication of KR20040042588A publication Critical patent/KR20040042588A/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01MLUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00Pressure lubrication
    • F01M1/06Lubricating systems characterised by the provision therein of crankshafts or connecting rods with lubricant passageways, e.g. bores
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01MLUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00Pressure lubrication
    • F01M1/06Lubricating systems characterised by the provision therein of crankshafts or connecting rods with lubricant passageways, e.g. bores
    • F01M2001/064Camshaft with passageways

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)

Abstract

PURPOSE: An oil supply structure of a camshaft is provided to cut down the manufacturing cost and prevent the wear of a coupling by supplying oil supplied to a journal unit of the camshaft to the coupling with a simple structure. CONSTITUTION: An oil supply structure of a camshaft(10) is composed of a fuel pump(30) combined to the end of the camshaft placed on a cylinder head(20) by a coupling(40); an oil passage of the cylinder head for supplying oil to a journal unit of the camshaft; a hollow hole formed at the center end of the camshaft and communicated with the coupling; and an oil supply hole(17) disposed in the camshaft to connect the hollow hole and the oil passage. The hollow hole and the oil supply hole communicate to each other and the oil supply hole is connected with the oil passage of the cylinder head to supply the oil of the cylinder head to the coupling.

Description

캠 샤프트의 오일 공급구조{oil supply structure of cam shaft}Oil supply structure of cam shaft

본 발명은 캠 샤프트의 오일 공급구조에 관한 것으로, 특히 연료펌프를 캠 샤프트의 단부에 결합시키는 커플링에 오일을 공급하도록 그 구조가 개선된 캠 샤프트의 오일 공급구조에 관한 것이다.The present invention relates to an oil supply structure of a camshaft, and more particularly, to an oil supply structure of a camshaft whose structure is improved to supply oil to a coupling for coupling a fuel pump to an end of the camshaft.

일반적으로, 차량은 혼합기가 착화되면서 발생하게 되는 폭발력을 이용하여 크랭크 샤프트를 회전시켜 동력을 발생시키는 엔진을 구비하며, 그 엔진의 주요 구성은 다수개의 피스톤이 승강되도록 수용 설치되는 실린더와, 실린더에서 발생되는 고열을 냉각시키는 냉각수가 흐르는 통로인 워터 재킷이 마련된 실린더 블럭과, 그 실린더 블럭의 상측에 위치하며 복수개의 흡기 및 배기밸브와 그 밸브들을 작동시키는 캠 샤프트 및 실린더에 연료를 공급하기 위한 연료 분사기구등이 구비된 실린더 헤드등이 있다.In general, the vehicle has an engine for generating power by rotating the crankshaft by using the explosive force generated when the mixer is ignited, the main configuration of the engine is a cylinder that is installed to accommodate a plurality of pistons to lift, A cylinder block provided with a water jacket, a passage through which coolant flows to cool the generated high heat, and a fuel for supplying fuel to a plurality of intake and exhaust valves and a camshaft and cylinders for operating the valves. Cylinder heads equipped with injection mechanisms;

그 캠 샤프트는 실린더 헤드위에 안착되어 크랭크축으로부터 벨트 또는 체인에 의해 구동력을 전달받아 복수개의 흡기 및 배기밸브를 개폐시키는 기능을 수행하고 있다.The camshaft is mounted on the cylinder head and receives a driving force from a crankshaft by a belt or a chain to open and close a plurality of intake and exhaust valves.

그 캠 샤프트에는 고속으로 회전되는 캠 샤프트와 실린더 헤드의 냉각 및 윤활을 위해 실린더 블럭의 하단부에 위치한 오일팬으로부터 캠 샤프트의 각 부위에 오일이 공급되는 오일 공급구조를 갖고 있다.The camshaft has an oil supply structure in which oil is supplied to each part of the camshaft from an oil pan located at the lower end of the cylinder block for cooling and lubrication of the camshaft rotated at high speed and the cylinder head.

한편, 종래 고압의 연료를 분사하는 연료펌프가 캠 샤프트의 단부에 직접 결합되는 구조가 있으며, 그 구조는 도 4 및 도 5에 도시된 바와 같이, 실린더 헤드(20) 위에 캠 샤프트(10)가 안착 설치되고, 그 캠 샤프트(10)의 단부에 커플링(40)을 이용하여 연료펌프(30)가 결합되는 구조로 되어 있다.On the other hand, there is a structure in which a fuel pump for injecting high-pressure fuel is directly coupled to the end of the cam shaft, the structure is shown in Figures 4 and 5, the cam shaft 10 on the cylinder head 20 It is settled, and the fuel pump 30 is couple | bonded with the coupling 40 at the edge part of the cam shaft 10, and is structured.

그런데, 위의 캠 샤프트(10) 구조에서는 오일이 실린더 헤드(20)에 형성된 오일 통로(22)를 거쳐 캠 샤프트(10)의 저널부 외주면에 오일이 공급되므로, 실린더 헤드(20) 바깥쪽으로 돌출된 캠 샤프트(10)의 단부에 위치한 커플링(40)부위에제대로 오일이 공급되지 못하는 구조상의 단점이 있었다.However, in the above cam shaft 10 structure, since oil is supplied to the outer peripheral surface of the journal portion of the cam shaft 10 through the oil passage 22 formed in the cylinder head 20, the oil protrudes out of the cylinder head 20. There was a structural disadvantage that the oil was not properly supplied to the coupling 40 located at the end of the cam shaft 10.

이에 따라, 종래 캠 샤프트의 단부에 마련된 커플링부위에는 윤활을 위한 오일이 제대로 공급되지 않아 마모가 발생하게 될 뿐만 아니라, 그 부위의 열처리를 위해 열전도가 빠른 재질을 채용하거나 열처리부분에 대한 개발비용이 증대되는 문제점이 있었다.Accordingly, the coupling part provided at the end of the conventional cam shaft not only does not supply oil for lubrication properly, but also causes abrasion, and employs a material having a high thermal conductivity for heat treatment of the site, or a development cost for the heat treatment part. There was an increasing problem.

본 발명은 상기한 제반문제점을 감안하여 이를 해결하고자 안출된 것으로, 그 목적은 연료펌프를 캠 샤프트의 단부에 연결시키는 커플링부위에 윤활을 위한 오일이 제대로 공급되어 마모를 방지하도록 그 구조가 개선된 캠 샤프트의 오일 공급구조를 제공하는 데 있다.The present invention has been made to solve the above problems in view of the above, the object is to improve the structure to prevent the wear oil is properly supplied to the lubrication oil coupling portion connecting the fuel pump to the end of the cam shaft To provide an oil supply structure of a conventional camshaft.

도 1은 본 발명에 따른 캠 샤프트의 오일 공급구조를 나타낸 사시도.1 is a perspective view showing the oil supply structure of the cam shaft according to the present invention.

도 2는 도 1의 A-A선 단면도.2 is a cross-sectional view taken along the line A-A of FIG.

도 3은 본 발명의 오일 공급경로를 나타낸 일부 절개 사시도.Figure 3 is a partially cut perspective view showing the oil supply path of the present invention.

도 4는 종래 캠 샤프트의 오일 공급구조를 나타낸 사시도.Figure 4 is a perspective view showing the oil supply structure of the conventional cam shaft.

도 5는 도 4의 B-B선 단면도.5 is a cross-sectional view taken along the line B-B in FIG.

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

10 : 캠 샤프트15 : 중공10 cam shaft 15 hollow

17 : 오일 공급공20 : 실린더 헤드17 oil supply hole 20 cylinder head

22 : 오일 통로30 : 커플링22: oil passage 30: coupling

40 : 연료펌프40: fuel pump

상기한 목적을 달성하기 위한 본 발명은 실린더 헤드위에 안착된 캠 샤프트의 단부에 커플링에 의해 연료펌프가 결합되고, 그 캠 샤프트의 저널부에 실린더 헤드의 오일 통로를 통해 오일이 공급되는 캠 샤프트의 오일 공급구조에 있어서, 상기 캠 샤프트의 중앙 단부에 상기 커플링측과 연통되는 중공이 형성되고, 상기 캠 샤프트의 내부에 상기 중공과 오일 통로를 연결하는 오일 공급공이 형성된 것을 특징으로 한다.The present invention for achieving the above object is a cam shaft coupled to the fuel pump by a coupling to the end of the cam shaft seated on the cylinder head, the oil is supplied to the journal portion of the cam shaft through the oil passage of the cylinder head In the oil supply structure of the cam shaft, a hollow is formed in communication with the coupling side at the central end of the cam shaft, characterized in that the oil supply hole for connecting the hollow and the oil passage is formed in the cam shaft.

이하, 본 발명의 바람직한 실시예를 첨부된 도면을 참조하여 상세히 설명하기로 하되, 앞서 설명한 종래의 구성요소와 동일한 구성요소에 대해서는 동일 부호를 부여하기로 한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, and the same reference numerals will be given to the same components as the conventional components described above.

본 발명에 따른 캠 샤프트의 오일 공급구조는, 도 1 내지 도 3을 참조, 실린더 헤드(20)위에 캠 샤프트(10)가 안착 설치되고, 그 캠 샤프트(10)의 단부에 연료펌프(30)가 커플링(40)에 의해 결합되며 그 실린더 헤드(20)에 오일 통로(22)가 형성되어 캠 샤프트(10)의 저널부에 오일이 공급되는 구조를 갖는 캠 샤프트(10)에 있어서, 캠 샤프트(10)의 중앙 단부에 커플링(40)과 연통되는 중공(15)이 형성되고, 그 캠 샤프트(10)의 내부에 중공(15)과 오일 통로(22)를 연결하는 오일 공급공(17)이 형성된 구조를 갖는다.In the oil supply structure of the cam shaft according to the present invention, the cam shaft 10 is seated and installed on the cylinder head 20, and the fuel pump 30 is disposed at the end of the cam shaft 10 with reference to FIGS. 1 to 3. In the cam shaft 10 has a structure that is coupled by the coupling 40, the oil passage 22 is formed in the cylinder head 20, the oil is supplied to the journal portion of the cam shaft 10, the cam A hollow 15 communicating with the coupling 40 is formed at the central end of the shaft 10, and an oil supply hole connecting the hollow 15 and the oil passage 22 to the inside of the cam shaft 10 ( 17) has a formed structure.

더 상세히 설명하면, 그 중공(15)은 캠축의 중앙 단부와 커플링(40)부위에 오일이 공급되도록 상호 연결된 구조를 갖는다.In more detail, the hollow 15 has a structure in which oil is supplied to the central end of the camshaft and the coupling 40.

그리고, 오일 공급공(17)은 실린더 헤드(20)의 오일 통로(22)를 통해 오일이 캠 샤프트(10)의 저널부로 오일이 공급될 때 중앙측에 형성된 중공(15)으로 공급되도록 연동되는 구조를 가지며, 그 오일의 유입이 용이하도록 적정 경사각으로 형성되어 있다.And, the oil supply hole 17 is interlocked so that the oil is supplied to the hollow 15 formed on the center side when the oil is supplied to the journal portion of the cam shaft 10 through the oil passage 22 of the cylinder head 20 It has a structure and is formed at an appropriate inclination angle so that oil can be easily introduced.

또한, 그 오일 공급공(17)은 오일의 원활한 공급을 위해 오일 통로(22)가 형성된 경사각과 대략 비슷한 경사각을 갖도록 형성시키는 것이 바람직할 것이다.In addition, the oil supply hole 17 may be formed to have an inclination angle that is approximately similar to the inclination angle where the oil passage 22 is formed for smooth supply of oil.

즉, 본 발명은 중공(15)과 오일 공급공(17)이 상호 연통되고, 또 오일 공급공(17)은 실린더 헤드(20)의 오일 통로(22)와 연결되어 실린더 헤드(20)의 오일이 커플링(40)부위까지 공급되는 오일 공급 경로를 갖는 것이다.That is, in the present invention, the hollow 15 and the oil supply hole 17 are in communication with each other, and the oil supply hole 17 is connected to the oil passage 22 of the cylinder head 20 to supply the oil of the cylinder head 20. It has an oil supply path supplied to this coupling 40 part.

이러한 구조를 갖는 본 발명의 작용을 설명하면 다음과 같다.Referring to the operation of the present invention having such a structure is as follows.

차량의 주행중 윤활을 위한 오일이 오일팬(미도시)으로부터 오일펌프(미도시됨)를 거쳐 실린더 헤드(20) 내에 공급되며, 이어서 실린더 헤드(20)내에 형성된 오일 통로(22)를 통해 캠 샤프트(10)의 저널부 외주면으로 공급된다.Oil for lubrication while the vehicle is running is supplied from the oil pan (not shown) to the cylinder head 20 via an oil pump (not shown), and then the cam shaft through the oil passage 22 formed in the cylinder head 20. It is supplied to the outer peripheral surface of the journal part of (10).

이어서, 그 오일은 오일 공급공(17)을 거쳐 캠 샤프트(10)의 중앙에 형성된 중공(15) 내부로 유입되고, 캠 샤프트(10)의 회전시 발생되는 원심력에 의해 커플링(40) 측으로 공급된다.Subsequently, the oil flows into the hollow 15 formed in the center of the cam shaft 10 via the oil supply hole 17, and moves to the coupling 40 side by centrifugal force generated when the cam shaft 10 rotates. Supplied.

이는, 오일이 실린더 헤드(20)의 오일 통로(22)를 통해 캠 샤프트(10)의 저널부 외주면으로 공급되며, 캠 샤프트(10)의 경사진 상측에 형성된 오일 공급공(17)을 통해 유입된 후에 그 오일 공급공(17)과 연통된 중공(15)의 내부로 유입되는 오일의 공급경로를 갖기 때문이다.This is because oil is supplied through the oil passage 22 of the cylinder head 20 to the outer peripheral surface of the journal portion of the cam shaft 10 and flows through the oil supply hole 17 formed on the inclined upper side of the cam shaft 10. It is because it has a supply path of the oil flowing into the hollow 15 communicated with the oil supply hole 17 after being made.

따라서, 본 발명은 오일이 실린더 헤드(20)와 캠 샤프트(10)를 거쳐 커플링(40)측으로 공급되므로, 커플링(40)부위의 윤활이 이루어지게 된다.Therefore, in the present invention, since the oil is supplied to the coupling 40 side via the cylinder head 20 and the cam shaft 10, lubrication of the coupling 40 is performed.

이상과 같이 설명한 본 발명은 단순 구조로 연료펌프와 캠 샤프트의 연결을 위한 커플링에 오일을 공급하도록 그 구조가 개선된 것인 바, 이에 따르면 본 발명은 단순 구조로 캠 샤프트의 저널부에 공급되는 오일을 커플링측으로 공급되도록 함으로써, 제조단가를 절감하면서도 커플링 부위의 마모를 예방할 수 있는 효과를 갖는다.As described above, the present invention has a simple structure, and the structure thereof is improved to supply oil to a coupling for connecting the fuel pump and the cam shaft. Accordingly, the present invention provides the journal unit of the cam shaft with a simple structure. By supplying the oil to the coupling side, it is possible to reduce the manufacturing cost while preventing the wear of the coupling portion.

Claims (1)

실린더 헤드(20)위에 안착된 캠 샤프트(10)의 단부에 커플링(40)에 의해 연료펌프(30)가 결합되고, 그 캠 샤프트(10)의 저널부에 실린더 헤드(20)의 오일 통로(22)를 통해 오일이 공급되는 캠 샤프트의 오일 공급구조에 있어서,The fuel pump 30 is coupled to the end of the cam shaft 10 seated on the cylinder head 20 by the coupling 40, and the oil passage of the cylinder head 20 in the journal portion of the cam shaft 10. In the oil supply structure of the camshaft through which oil is supplied through 22, 상기 캠 샤프트(10)의 중앙 단부에 상기 커플링(40)측과 연통되는 중공(15)이 형성되고,A hollow 15 is formed at the central end of the cam shaft 10 to communicate with the coupling 40 side, 상기 캠 샤프트(10)의 내부에 상기 중공(15)과 상기 오일 통로(22)를 연결하는 오일 공급공(17)이 형성된 것을 특징으로 하는 캠 샤프트의 오일 공급구조.Oil supply structure of the cam shaft, characterized in that the oil supply hole (17) connecting the hollow (15) and the oil passage (22) is formed in the cam shaft (10).
KR1020020071145A 2002-11-15 2002-11-15 oil supply structure of cam shaft KR20040042588A (en)

Priority Applications (1)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06330719A (en) * 1993-05-19 1994-11-29 Nissan Motor Co Ltd Lubricator of internal combustion engine
JPH1018829A (en) * 1996-06-28 1998-01-20 Toyota Motor Corp Oil passage structure in internal combustion engine
KR19990020867U (en) * 1997-11-28 1999-06-25 양재신 Camshaft improves lubricity
JP2000073731A (en) * 1998-09-03 2000-03-07 Toyota Motor Corp Camshaft bearing structure of internal combustion engine
JP2001263025A (en) * 2000-03-16 2001-09-26 Nissan Motor Co Ltd Coupling device for driving auxiliary machine of internal combustion engine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06330719A (en) * 1993-05-19 1994-11-29 Nissan Motor Co Ltd Lubricator of internal combustion engine
JPH1018829A (en) * 1996-06-28 1998-01-20 Toyota Motor Corp Oil passage structure in internal combustion engine
KR19990020867U (en) * 1997-11-28 1999-06-25 양재신 Camshaft improves lubricity
JP2000073731A (en) * 1998-09-03 2000-03-07 Toyota Motor Corp Camshaft bearing structure of internal combustion engine
JP2001263025A (en) * 2000-03-16 2001-09-26 Nissan Motor Co Ltd Coupling device for driving auxiliary machine of internal combustion engine

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