KR101250676B1 - Oil supply structure for cam shaft and continuous variable valve timing apparatus for automobile - Google Patents

Oil supply structure for cam shaft and continuous variable valve timing apparatus for automobile Download PDF

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KR101250676B1
KR101250676B1 KR1020110137139A KR20110137139A KR101250676B1 KR 101250676 B1 KR101250676 B1 KR 101250676B1 KR 1020110137139 A KR1020110137139 A KR 1020110137139A KR 20110137139 A KR20110137139 A KR 20110137139A KR 101250676 B1 KR101250676 B1 KR 101250676B1
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South Korea
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valve timing
oil
variable valve
cam shaft
camshaft
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KR1020110137139A
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Korean (ko)
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김상기
김학용
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쌍용자동차 주식회사
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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
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
    • F01L1/3442—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using hydraulic chambers with variable volume to transmit the rotating force
    • 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
    • F01L1/02—Valve drive
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/047—Camshafts
    • F01L1/053—Camshafts overhead type
    • 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
    • F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
    • F01L1/3442—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using hydraulic chambers with variable volume to transmit the rotating force
    • F01L2001/34423—Details relating to the hydraulic feeding circuit
    • F01L2001/34426—Oil control valves
    • 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
    • F01L2810/00—Arrangements solving specific problems in relation with valve gears
    • F01L2810/02—Lubrication
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/06—Lubricating systems characterised by the provision therein of crankshafts or connecting rods with lubricant passageways, e.g. bores
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/06—Lubricating systems characterised by the provision therein of crankshafts or connecting rods with lubricant passageways, e.g. bores
    • F01M2001/064—Camshaft with passageways
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Abstract

PURPOSE: An oil supply structure for a cam shaft and a variable valve timing device for a vehicle is provided to effectively solve th problem of decreased fuel efficiency due to increase in engine friction caused by increased oil pressure. CONSTITUTION: An oil supply structure is formed between a cylinder head and a cam shaft(100) in an advance direction and a delay direction so that oil flowing from an oil pump can be supplied to a variable valve timing device through an oil control valve. The oil flows into the cam shaft through advance direction passages(200). A delay direction passage(500) is formed between the cam shaft and cam shaft center bolt(400). The oil flows into the variable valve timing device through the delay direction passage.

Description

자동차용 캠샤프트 및 가변밸브 타이밍장치의 오일공급구조{oil supply structure for cam shaft and continuous variable valve timing apparatus for automobile}Oil supply structure for cam shaft and continuous variable valve timing apparatus for automobile}

본 발명은 자동차용 캠샤프트 및 가변밸브 타이밍장치의 오일공급구조에 관한 것으로서, 더욱 상세히는 오일펌프로부터 유입되는 오일이 오일제어밸브를 거쳐 가변밸브 타이밍장치로 공급되도록 실린더 헤드와 캠샤프트 사이에 진각 및 지각 방향으로 형성되는 캠샤프트 및 가변밸브 타이밍장치의 오일공급구조에 있어서, 캠샤프트에는 진각 방향으로 오일을 유입시키는 진각 방향 유로를 형성하고, 캠샤프트 센터볼트와 캠샤프트 사이에 지각 방향으로 오일을 유입시키는 지각 방향 유로를 형성하여, 캠샤프트 및 가변밸브 타이밍장치에 공급되는 오일공급 속도를 향상시킬 수 있도록 한 자동차용 캠샤프트 및 가변밸브 타이밍장치의 오일공급구조에 관한 것이다.
The present invention relates to an oil supply structure of an automobile camshaft and a variable valve timing device, and more particularly, an advance between the cylinder head and the camshaft such that oil flowing from the oil pump is supplied to the variable valve timing device through an oil control valve. And an oil supply structure of the cam shaft and the variable valve timing device formed in the crust direction, wherein the cam shaft has a forward flow path for introducing oil in the forward direction, and the oil in the crust direction between the cam shaft center bolt and the cam shaft. The present invention relates to an oil supply structure of a camshaft and a variable valve timing apparatus for an automobile, which is configured to form a perceptual flow path through which the oil is introduced, thereby improving the oil supply speed supplied to the camshaft and the variable valve timing apparatus.

엔진의 흡.배기 타이밍은 캠의 형상과 위상각에 의해 조절되는데 엔진 내의 흡배기를 최적화하기 위해서 엔진은 속도 및 부하조건에 따른 상이한 밸브 타이밍이 필요하다.The intake and exhaust timing of the engine is controlled by the shape and phase angle of the cam. In order to optimize the intake and exhaust in the engine, the engine needs different valve timings according to the speed and load conditions.

왜냐하면, 엔진 실린더로 공급되는 공기에는 관성이 작용해 흡기행정이 끝나도 흡기관 내 공기는 계속 실린더로 흘러들어 가려 하고, 반면 배기가스는 연소실에서 완전히 배출되지 못하기 때문이다. This is because inertia acts on the air supplied to the engine cylinder so that the air in the intake pipe continues to flow into the cylinder even when the intake stroke is completed, whereas exhaust gas is not completely discharged from the combustion chamber.

그래서 흡기와 배기의 밸브 타이밍을 통해 밸브 오버랩 기간을 조절함으로써 흡배기를 원활히 하는 기술이 필요하게 되는 것이다.Therefore, there is a need for a technique for smoothing the intake and exhaust air by adjusting the valve overlap period through the valve timing of the intake and exhaust.

즉, 가변밸브 타이밍 기술이 있기 전에는 사용 목적에 따라 최적의 밸브 타이밍을 선택해 사용했다. In other words, before the variable valve timing technology existed, the optimum valve timing was selected and used according to the purpose of use.

예들 들어 밴의 경우 저속에서의 출력 이득을 얻기 위해 오버랩을 짧게 했고 경주용 엔진은 고속에서의 출력을 향상시키기 위해 오버랩 기간을 길게 조절했다.For example, in the case of vans, the overlap was shortened to obtain power gain at low speeds, and the racing engine adjusted the overlap duration to improve power at high speeds.

그리고 보통의 세단형에는 저속 운전성과 고속에서의 출력 손실을 감수하고, 중속에서의 밸브 타이밍을 최적화시켰다.In addition, the normal sedan takes low-speed operation and output loss at high speed and optimizes valve timing at medium speed.

이는 밸브 타이밍을 늦추면 보다 많은 공기를 흡입할 수 있어 체적효율의 향상으로 출력이 증가되어 고속회전 때 성능을 향상시킬 수 있다. This slows the valve timing, allowing more air to be sucked, which increases the volumetric efficiency and improves performance at high speeds.

다만 저 회전 때는 피스톤이 상승할 때에 실린더 내 흡입한 혼합기를 흡입관으로 역류시켜 토크 저하와 불안정한 회전을 불러일으키는 요인이 된다. At low rotations, however, when the piston rises, the cylinder-inhaled mixer flows back into the suction pipe, causing torque reduction and unstable rotation.

하지만 반대로 밸브 타이밍을 빠르게 하면 저속회전에서는 안정된 회전과 토크 향상을 가져오지만, 고속회전에서는 토크 및 최고출력의 저하를 유발하게 되는 것이다. 이는 특정 운전조건에만 만족할 수 있도록 밸브 타이밍이 고정되었던 것이다.On the contrary, if the valve timing is made faster, stable rotation and torque improvement will occur at low speed rotation, but torque and peak output will be degraded at high speed rotation. The valve timing was fixed so that only certain operating conditions were met.

이와 같은 문제점을 극복하기 위한 시도 중의 하나로 개발된 테크놀러지가 밸브타이밍과 밸브 리프트를 가변함으로써 저속 및 고속 영역에서 공히 최대의 효율을 이룩할 수 있게 설계된 것이 가변 밸브 타이밍 시스템이다.In an attempt to overcome this problem, the variable valve timing system is designed to achieve maximum efficiency in both low and high speeds by varying the valve timing and the valve lift.

일반적으로 CVVT(continuously variable valve timing), 즉 가변밸브 타이밍 장치는 차량의 배기가스 저감과 연비 향상 및 출력 향상을 목적으로 차량에 적용되는 것이다.In general, CVVT (continuously variable valve timing), that is, variable valve timing device is applied to the vehicle for the purpose of reducing the exhaust gas, fuel efficiency and output of the vehicle.

이러한 가변밸브 타이밍 장치는 OCV(oil control valve), 즉 오일제어밸브를 통해 오일을 공급받게 되는 것이다.The variable valve timing device is supplied with oil through an oil control valve (OCV), that is, an oil control valve.

오일을 오일제어밸브에서 가변밸브 타이밍장치까지 공급하는 방법으로는 오일제어밸브 및 오일제어밸브 이후 가변밸브 타이밍장치에 오일을 공급하는 방법에 따라 여러 종류로 나뉘게 되는 것이다.The method of supplying oil from the oil control valve to the variable valve timing device is divided into various types according to the method of supplying oil to the variable valve timing device after the oil control valve and the oil control valve.

또한, 가변밸브 타이밍장치가 설치되는 위치는 실린더헤드에 장착하는 경우와 실린더헤드 커버에 장착하는 경우로 나뉘게 되는 것이다.In addition, the position where the variable valve timing device is installed is divided into the case of mounting on the cylinder head and the case of mounting on the cylinder head cover.

그리고, 가변밸브 타이밍장치에 오일을 공급하는 방법으로는 캠샤프트를 통해 오일을 공급하는 방법과 실린더헤드에서 직접 별도의 유로를 구성하여 오일을 공급하는 방법으로 나뉘게 되는 것이다.In addition, a method of supplying oil to the variable valve timing device is divided into a method of supplying oil through a cam shaft and a method of supplying oil by configuring a separate flow path directly from the cylinder head.

도 1 은 종래의 자동차용 캠샤프트 및 가변밸브 타이밍장치의 오일공급구조의 진각 및 지각 유로를 보여주는 단면도이고, 도 2 는 종래의 자동차용 캠샤프트 및 가변밸브 타이밍장치의 오일공급구조의 진각 및 지각 유로를 보여주는 사시도이다.1 is a cross-sectional view showing the advance and perception flow path of the oil supply structure of the conventional vehicle camshaft and variable valve timing apparatus, Figure 2 is the advance and perception of the oil supply structure of the conventional camshaft and variable valve timing apparatus for automobiles. A perspective view showing a flow path.

즉, 캠샤프트(10)를 통해 오일을 가변밸브 타이밍장치에 공급하는 경우, 캠샤프트(10)에 결합되는 캠샤프트 센터볼트(40)를 중심으로 진각 방향 유로(20) 및 지각 방향 유로(50)를 각각 형성하여 오일을 공급하게 되는 것이다.That is, when the oil is supplied to the variable valve timing apparatus through the cam shaft 10, the advance direction flow path 20 and the perceptual flow path 50 around the cam shaft center bolt 40 coupled to the cam shaft 10. ) To supply oil.

하지만, 이와 같은 자동차용 캠샤프트 및 가변밸브 타이밍장치의 오일공급구조는 다음과 같은 문제점이 있었다.However, the oil supply structure of the camshaft and variable valve timing device for automobiles has the following problems.

즉, 캠샤프트에 진각 방향 유로와 지각 방향 유로가 캠샤프트 센터볼트를 중심으로 각각 마주보게 2개씩만 형성되기 때문에 캠샤프트에서 가변밸브 타이밍장치에 오일을 공급하는 시간이 소요되어 필요한 시기에 밸브타이밍을 가변하지 못하는 문제점이 있었다.In other words, since only two forward flow paths and two perceptual flow paths are formed on the camshaft facing each other around the camshaft center bolt, it takes time to supply oil to the variable valve timing device in the camshaft. There was a problem that can not be changed.

이를 개선하기 위해 오일압력을 증대시키면 엔진 전체적으로 오일압력이 증대되어 마찰손실을 가져와 연비에 악영향을 미치는 문제점도 있었다.
In order to improve this, increasing the oil pressure also increases the oil pressure of the engine as a whole, resulting in friction loss, which also has a problem of adversely affecting fuel efficiency.

따라서 본 발명의 목적은 캠샤프트 및 가변밸브 타이밍장치에 공급되는 오일공급 속도를 향상시킬 수 있도록 캠샤프트에는 진각 방향으로 오일을 유입시키는 진각 방향 유로를 형성하고, 캠샤프트 센터볼트와 캠샤프트 사이에 지각 방향으로 오일을 유입시키는 지각 방향 유로를 형성하여, 캠샤프트에 진각 방향 유로와 지각 방향 유로가 캠샤프트 센터볼트를 중심으로 각각 마주보게 2개씩만 형성되기 때문에 캠샤프트에서 가변밸브 타이밍장치에 오일을 공급하는 속도가 느려 적절한 시기에 밸브타이밍을 가변하지 못하는 문제점과 이를 개선하기 위해 오일압력을 증대시켜 엔진마찰손실에 따른 연비가 나빠지는 문제점을 효과적으로 해결할 수 있도록 한 자동차용 캠샤프트 및 가변밸브 타이밍장치의 오일공급구조를 제공하는데 있다.
Accordingly, an object of the present invention is to form an advance flow path for introducing oil in the forward direction to the cam shaft to improve the oil supply speed supplied to the cam shaft and the variable valve timing device, between the cam shaft center bolt and the cam shaft In the camshaft, the variable valve timing device in the variable valve timing device is formed because only two forward passages and two perceptual passages are formed on the camshaft facing each other around the camshaft center bolt. Automotive camshaft and variable valve timing to effectively solve the problem of not being able to change the valve timing at a proper time due to the low speed of supplying the fuel and increasing the oil pressure to improve the fuel economy caused by engine friction loss. It is to provide an oil supply structure of the device.

이와 같은 본 발명은 오일펌프로부터 유입되는 오일이 오일제어밸브를 거쳐 가변밸브 타이밍장치로 공급되도록 실린더 헤드와 캠샤프트 사이에 진각 및 지각 방향으로 형성되는 캠샤프트 및 가변밸브 타이밍장치의 오일공급구조에 있어서, 캠샤프트에 진각 방향으로 오일을 유입시키는 진각 방향 유로를 형성하고, 가변밸브 타이밍장치와 캠샤프트를 결합시켜주는 캠샤프트 센터볼트와 캠샤프트 사이에는 지각 방향으로 오일을 유입시키는 지각 방향 유로를 형성하여, 가변밸브 타이밍장치로 공급되는 오일의 공급속도를 향상시킬 수 있도록 형성하며, 캠샤프트에 형성되는 진각 방향 유로는 캠샤프트 센터볼트를 중심으로 3개 또는 4개로 형성하여, 가변밸브 타이밍장치로 공급되는 오일의 공급속도를 향상시킬 수 있도록 하고, 캠샤프트 센터볼트와 캠샤프트 사이에 형성되는 지각 방향 유로는 캠샤프트 센터볼트 둘레에 형성하되, 가변밸브 타이밍장치에는 지각 방향 유로로부터 가변밸브 타이밍장치로 오일이 공급되는 다수 개의 오일공급로를 형성하며, 진각 방향 유로를 형성하기 위해 캠샤프트에 일정 깊이를 가지는 오일 공급로를 다수개 형성하고, 지각 방향 유로를 형성하기 위해 캠샤프트 센터볼트의 오일 공급로가 형성함으로써 본 발명의 목적을 달성할 수 있는 것이다.
As described above, the present invention relates to an oil supply structure of a cam shaft and a variable valve timing device formed between the cylinder head and the cam shaft in an advancing and perceptual direction such that oil flowing from the oil pump is supplied to the variable valve timing device via the oil control valve. In the camshaft, it forms a forward flow path for introducing oil in the forward direction, and between the cam shaft center bolt for coupling the variable valve timing device and the cam shaft and the cam shaft, a perceptual flow path for introducing oil in the earth direction. It is formed to improve the supply speed of the oil supplied to the variable valve timing device, and the three or four forward flow path formed in the cam shaft is formed around the cam shaft center bolt, the variable valve timing device To improve the feed rate of oil supplied to the The perceptual flow path formed between the cam shafts is formed around the center of the cam shaft, and the variable valve timing device forms a plurality of oil supply paths through which oil is supplied from the perceptual flow path to the variable valve timing device. The object of the present invention can be achieved by forming a plurality of oil supply paths having a predetermined depth in the camshaft to form, and forming an oil supply path of the camshaft center bolts to form the perceptual flow path.

이와 같은 본 발명은 오일펌프로부터 유입되는 오일이 오일제어밸브를 거쳐 가변밸브 타이밍장치로 공급되도록 실린더 헤드와 캠샤프트 사이에 진각 및 지각 방향으로 형성되는 캠샤프트 및 가변밸브 타이밍장치의 오일공급구조에 있어서, 캠샤프트에는 진각 방향으로 오일을 유입시키는 진각 방향 유로를 형성하고, 캠샤프트 센터볼트와 캠샤프트 사이에 지각 방향으로 오일을 유입시키는 지각 방향 유로를 형성함으로써, 캠샤프트 및 가변밸브 타이밍장치에 공급되는 오일공급 속도를 향상시키는 효과가 있는 것이다.As described above, the present invention relates to an oil supply structure of a cam shaft and a variable valve timing device formed between the cylinder head and the cam shaft in an advancing and perceptual direction such that oil flowing from the oil pump is supplied to the variable valve timing device via the oil control valve. In the camshaft, the camshaft and the variable valve timing apparatus are formed in the camshaft by forming an advancing flow path for introducing oil in the advancing direction, and forming a crust direction flow path for introducing oil in the perceptual direction between the camshaft center bolt and the camshaft. It is effective to improve the oil supply rate.

그리고, 캠샤프트 및 가변밸브 타이밍장치에 공급되는 오일공급 속도를 향상시켜 캠샤프트 및 가변밸브 타이밍장치에 오일을 충분히 공급함으로써, 밸브타이밍을 빠르게 가변하여 목표성능을 만족시킬 수 있고, 오일압력을 필요 이상으로 증대하지 않아도 되기 때문에 마찰손실에 따른 연비저하를 방지하는 효과도 있는 것이다.
In addition, by supplying sufficient oil to the camshaft and the variable valve timing device by improving the oil supply speed supplied to the camshaft and the variable valve timing device, it is possible to quickly change the valve timing to satisfy the target performance and to require oil pressure. Since there is no need to increase more than this, there is also an effect to prevent the fuel economy decrease due to friction loss.

도 1 은 종래의 자동차용 캠샤프트 및 가변밸브 타이밍장치의 오일공급구조의 진각 및 지각 유로를 보여주는 단면도.
도 2 는 종래의 자동차용 캠샤프트 및 가변밸브 타이밍장치의 오일공급구조의 진각 및 지각 유로를 보여주는 사시도.
도 3 은 본 발명에 따른 자동차용 캠샤프트 및 가변밸브 타이밍장치의 오일공급구조의 진각 및 지각 유로를 보여주는 단면도.
도 4 는 본 발명에 따른 자동차용 캠샤프트 및 가변밸브 타이밍장치의 오일공급구조의 진각 및 지각 유로를 보여주는 사시도.
도 5 는 본 발명에 따른 자동차용 캠샤프트 및 가변밸브 타이밍장치의 오일공급구조를 보여주는 사시도.
도 6 은 발명에 따른 자동차용 캠샤프트 및 가변밸브 타이밍장치의 오일공급구조를 보여주는 결합 사시도.
도 7 은 발명에 따른 자동차용 캠샤프트 및 가변밸브 타이밍장치의 오일공급구조의 구조를 보여주는 분리 사시도.BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional view showing an advance and a crust flow path of an oil supply structure of a conventional vehicle camshaft and variable valve timing apparatus.
Figure 2 is a perspective view showing the advance and the tectonic flow path of the oil supply structure of the conventional vehicle camshaft and variable valve timing device.
3 is a cross-sectional view showing the advance and the tectonic flow path of the oil supply structure of the camshaft and variable valve timing apparatus for an automobile according to the present invention.
Figure 4 is a perspective view showing the advance and the tectonic flow path of the oil supply structure of the camshaft and variable valve timing apparatus for an automobile according to the present invention.
Figure 5 is a perspective view showing the oil supply structure of the camshaft and variable valve timing apparatus for an automobile according to the present invention.
Figure 6 is a perspective view showing the oil supply structure of the camshaft and variable valve timing device for a vehicle according to the invention.
Figure 7 is an exploded perspective view showing the structure of the oil supply structure of the camshaft and variable valve timing device for a vehicle according to the invention.

이하 본 발명의 특징을 효과적으로 달성할 수 있는 바람직한 실시 예로서 그 기술구성 및 작용효과를 첨부된 도면에 의하여 상세히 설명하면 다음과 같다.DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

즉, 도 3 은 본 발명에 따른 자동차용 캠샤프트 및 가변밸브 타이밍장치의 오일공급구조의 진각 및 지각 유로를 보여주는 단면도이고, 도 4 는 본 발명에 따른 자동차용 캠샤프트 및 가변밸브 타이밍장치의 오일공급구조의 진각 및 지각 유로를 보여주는 사시도이며, 도 5 는 본 발명에 따른 자동차용 캠샤프트 및 가변밸브 타이밍장치의 오일공급구조를 보여주는 사시도, 도 6 은 발명에 따른 자동차용 캠샤프트 및 가변밸브 타이밍장치의 오일공급구조를 보여주는 결합 사시도이고, 도 7 은 발명에 따른 자동차용 캠샤프트 및 가변밸브 타이밍장치의 오일공급구조의 구조를 보여주는 분리 사시도이다.That is, Figure 3 is a cross-sectional view showing the advance and the latent flow path of the oil supply structure of the camshaft and variable valve timing apparatus for automobiles according to the present invention, Figure 4 is the oil of the camshaft and variable valve timing apparatus for automobiles according to the present invention Figure 5 is a perspective view showing the advance and the latent flow path of the supply structure, Figure 5 is a perspective view showing the oil supply structure of the camshaft and variable valve timing apparatus for a vehicle according to the invention, Figure 6 is a camshaft and variable valve timing for a vehicle according to the invention A combined perspective view showing the oil supply structure of the device, Figure 7 is an exploded perspective view showing the structure of the oil supply structure of the camshaft and variable valve timing device for a vehicle according to the invention.

이와 같은 본 발명은 오일펌프로부터 유입되는 오일이 오일제어밸브를 거쳐 가변밸브 타이밍장치로 공급되도록 실린더 헤드와 캠샤프트 사이에 진각 및 지각 방향으로 형성되는 캠샤프트 및 가변밸브 타이밍장치의 오일공급구조에 있어서, 캠샤프트(100)에 진각 방향으로 오일을 유입시키는 진각 방향 유로(200)를 형성하고, 가변밸브 타이밍장치(300)와 캠샤프트(100)를 결합시켜주는 캠샤프트 센터볼트(400)와 캠샤프트(100) 사이에는 지각 방향으로 오일을 유입시키는 지각 방향 유로(500)를 형성하여, 가변밸브 타이밍장치로 공급되는 오일의 공급속도를 향상시킬 수 있도록 한 것을 특징으로 하는 것이다.As described above, the present invention relates to an oil supply structure of a cam shaft and a variable valve timing device formed between the cylinder head and the cam shaft in an advancing and perceptual direction such that oil flowing from the oil pump is supplied to the variable valve timing device via the oil control valve. In the camshaft 100, a camshaft center bolt 400 is formed to form an advancing direction flow path 200 for introducing oil in the advancing direction, and couples the variable valve timing device 300 and the camshaft 100 to each other. Between the cam shaft 100 is formed by the perceptual direction flow path 500 for introducing the oil in the perceptual direction, it is characterized in that to improve the supply speed of the oil supplied to the variable valve timing device.

그리고, 캠샤프트(100)에 형성되는 진각 방향 유로(200)는 캠샤프트 센터볼트(400)를 중심으로 3개 또는 4개로 형성하여, 가변밸브 타이밍장치로 공급되는 오일의 공급속도를 향상시킬 수 있도록 형성하고, 캠샤프트 센터볼트(400)와 캠샤프트(100) 사이에 형성되는 지각 방향 유로(500)는 캠샤프트 센터볼트(400) 둘레에 형성하되, 가변밸브 타이밍장치(300)에는 지각 방향 유로(500)로부터 가변밸브 타이밍장치(300)로 오일이 공급되는 다수 개의 오일공급로(600)를 형성하며, 진각 방향 유로(200)를 형성하기 위해 캠샤프트(100)에 일정 깊이를 가지는 오일 공급로(110)를 다수개 형성하고, 지각 방향 유로(500)를 형성하기 위해 캠샤프트 센터볼트(400)의 오일 공급로(410)가 형성되는 것을 특징으로 하는 것이다.In addition, the advance direction flow path 200 formed in the camshaft 100 is formed of three or four centering around the camshaft center bolt 400, thereby improving the supply speed of the oil supplied to the variable valve timing device. And the perceptual direction flow path 500 formed between the camshaft center bolt 400 and the camshaft 100 is formed around the camshaft center bolt 400, but the variable valve timing device 300 has a perceptual direction. A plurality of oil supply paths 600 through which oil is supplied from the flow path 500 to the variable valve timing device 300 are formed, and oil having a predetermined depth in the cam shaft 100 to form the advance direction flow path 200. A plurality of supply paths 110 are formed, and an oil supply path 410 of the camshaft center bolt 400 is formed to form a perceptual flow path 500.

이와 같은 본 발명은 캠샤프트 및 가변밸브 타이밍장치의 오일공급구조에 관한 것이다.This invention relates to the oil supply structure of the camshaft and variable valve timing apparatus.

즉, 오일펌프로부터 유입되는 오일이 오일제어밸브를 거쳐 가변밸브 타이밍장치로 공급되도록 실린더 헤드와 캠샤프트 사이에 진각 및 지각 방향으로 형성되는 캠샤프트 및 가변밸브 타이밍장치의 오일공급구조에 있어서, 종래에는 도 1에서 보는 것과 같이 진각 방향 유로(20)와 지각 방향 유로(50)가 모두 캠샤프트(10)에 형성되어 있었다.That is, in the oil supply structure of the cam shaft and the variable valve timing apparatus, which are formed in the advancing and perceptual directions between the cylinder head and the cam shaft so that oil flowing from the oil pump is supplied to the variable valve timing apparatus via the oil control valve, As shown in FIG. 1, both the advance direction flow path 20 and the perceptual direction flow path 50 were formed in the camshaft 10. As shown in FIG.

하지만, 본 발명은 진각 방향 유로(200)는 캠샤프트(100)에 형성하고, 지각 방향 유로(500)는 캠샤프트 센터볼트(400)와 캠샤프트(100)의 결합부위에 형성하되, 캠샤프트(100)에는 진각 방향 유로(200)만 형성하면 되기 때문에 종래의 진각 방향 유로(200)와 지각 방향 유로(500)를 모두 진각 방향 유로(200)로 사용할 수 있게 되는 것이다.However, in the present invention, the advance direction flow path 200 is formed on the cam shaft 100, and the perceptual direction flow path 500 is formed on the coupling portion of the cam shaft center bolt 400 and the cam shaft 100, but the cam shaft Since only the advance direction flow path 200 needs to be formed in the 100, both the conventional advance direction flow path 200 and the perceptual direction flow path 500 can be used as the advance direction flow path 200.

이때, 유로에 오일이 원활히 공급될 수 있도록 유로가 형성됨이 바람직 할 것이다.At this time, it will be preferable that the flow path is formed so that the oil can be smoothly supplied to the flow path.

즉, 캠샤프트(100)의 끝단부에는 일정한 깊이를 가지도록 형성된 오일 공급로(110)가 형성되고, 캠샤프트 센터볼트(400) 역시 오일 공급로(410)가 형성되어야 할 것이다.That is, the oil supply path 110 formed to have a constant depth is formed at the end of the cam shaft 100, the cam shaft center bolt 400 should also be formed oil supply path 410.

이때, 캠샤프트 센터볼트(400)의 오일 공급로(410)는 볼트 나선부의 외경보다 좀더 작게 형성된 몸체 외경보다 작게 가공함이 바람직하며, 이로써 오일이 오일 공급로(410)로 자유로이 이동될 수 있도록 구성되는 것이다.At this time, the oil supply passage 410 of the cam shaft center bolt 400 is preferably processed smaller than the outer diameter of the body formed smaller than the outer diameter of the bolt helix, so that the oil can be freely moved to the oil supply passage 410 It is composed.

이렇게, 캠샤프트(100)에 형성되는 3개 내지 4개의 유로를 모두 진각 방향 유로(200)로 사용함으로써, 캠샤프트(100) 및 가변밸브 타이밍장치(300)에 공급되는 오일의 압력이 동일한 경우 종래보다 오일공급 속도가 향상되어 응답성이 개선되는 효과가 있는 것이다.In this way, when all three to four flow paths formed on the camshaft 100 are used as the forward direction flow paths 200, the pressure of the oil supplied to the camshaft 100 and the variable valve timing device 300 is the same. The oil supply speed is improved compared to the prior art is to improve the response.

그리고, 가변밸브 타이밍장치(300)와 캠샤프트(100)를 결합시켜주는 캠샤프트 센터볼트(400)와 캠샤프트(100) 사이에는 지각 방향 유로(500)를 형성하게 되는 것이다.The perceptual flow path 500 is formed between the cam shaft center bolt 400 and the cam shaft 100 coupling the variable valve timing device 300 and the cam shaft 100.

즉, 종래에는 가변밸브 타이밍장치(400)와 캠샤프트(100)를 결합시켜주는 역할만 수행하던 캠샤프트 센터볼트(400) 둘레와 캠샤프트(100)의 결합면 사이에 진각 방향 유로(200)를 형성하고, 가변밸브 타이밍장치(300)에는 진각 방향 유로(200)로부터 유입되는 오일이 공급되는 오일공급로(600)를 형성하여 진각 방향으로부터 유입되는 오일을 가변밸브 타이밍장치(300)에 공급하게 되는 것이다.That is, the advancing direction flow path 200 between the cam shaft center bolt 400 and the mating surface of the cam shaft 100, which were conventionally only serving to couple the variable valve timing device 400 and the cam shaft 100, together with each other. And an oil supply path 600 through which the oil flowing from the advance direction flow path 200 is supplied to the variable valve timing device 300 to supply the oil introduced from the advance direction to the variable valve timing device 300. Will be done.

이렇게, 캠샤프트 센터볼트(400)와 캠샤프트(100) 사이에 형성되는 지각 방향 유로(500)를 통해 지각 방향으로 유입되는 오일만을 가변밸브 타이밍장치(300)에 공급함으로써, 캠샤프트(100) 및 가변밸브 타이밍장치(300)에 공급되는 오일의 압력이 동일한 경우 종래보다 오일공급 속도가 향상되어 응답성이 개선되는 효과가 있는 것이다.Thus, by supplying only the oil flowing in the perceptual direction through the perceptual direction flow path 500 formed between the camshaft center bolt 400 and the camshaft 100 to the variable valve timing device 300, the camshaft 100 And when the pressure of the oil supplied to the variable valve timing device 300 is the same, the oil supply speed is improved compared to the conventional has the effect of improving the response.

특히, 별도의 장치나 부품 없이 가변밸브 타이밍장치(300)와 캠샤프트(100)를 연결시켜주는 캠샤프트 센터볼트(400)와 캠샤프트(100) 사이에 진각 방향 유로(200)를 형성하여 가변밸브 타이밍장치(300)에 공급되는 오일이 동일한 압력일 경우 오일공급 속도를 향상시킬 수 있게 되는 것이다.
In particular, the variable valve timing device 300 and the cam shaft 100 connecting the cam shaft center bolt 400 and the cam shaft 100 to form an advancing direction flow path 200 without a separate device or parts are variable When the oil supplied to the valve timing device 300 is the same pressure, it is possible to improve the oil supply speed.

100 : 캠샤프트 200 : 진각 방향 유로
300 : 가변밸브 타이밍장치 400 : 캠샤프트 센터볼트
500 : 지각 방향 유로 600 : 오일공급로100: camshaft 200: forward direction flow path
300: variable valve timing device 400: cam shaft center bolt
500: crustal flow path 600: oil supply path

Claims (4)

오일펌프로부터 유입되는 오일이 오일제어밸브를 거쳐 가변밸브 타이밍장치로 공급되도록 실린더 헤드와 캠샤프트 사이에 진각 및 지각 방향으로 형성되는 캠샤프트 및 가변밸브 타이밍장치의 오일공급구조에 있어서,
캠샤프트(100)에 진각 방향으로 오일을 유입시키는 진각 방향 유로(200)를 형성하고, 가변밸브 타이밍장치(300)와 캠샤프트(100)를 결합시켜주는 캠샤프트 센터볼트(400)와 캠샤프트(100) 사이에는 지각 방향으로 오일을 유입시키는 지각 방향 유로(500)를 형성하여,
가변밸브 타이밍장치로 공급되는 오일의 공급속도를 향상시킬 수 있도록 한 것을 특징으로 하는 자동차용 캠샤프트 및 가변밸브 타이밍장치의 오일공급구조.
In the oil supply structure of the cam shaft and the variable valve timing device is formed between the cylinder head and the cam shaft in the advance and perceptual direction so that the oil flowing from the oil pump is supplied to the variable valve timing device via the oil control valve,
The camshaft center bolt 400 and the camshaft which form the advance direction flow path 200 which introduces oil in the advance direction in the camshaft 100, and couples the variable valve timing apparatus 300 and the camshaft 100 to the camshaft 100 are shown. Between the 100 to form a crust direction flow path 500 for introducing oil in the crust direction,
An oil supply structure of a cam shaft and a variable valve timing device for an automobile, wherein the supply speed of the oil supplied to the variable valve timing device can be improved.
제 1 항에 있어서,
캠샤프트(100)에 형성되는 진각 방향 유로(200)는 캠샤프트 센터볼트(400)를 중심으로 3개 또는 4개로 형성하여,
가변밸브 타이밍장치로 공급되는 오일의 공급속도를 향상시킬 수 있도록 한 것을 특징으로 하는 자동차용 캠샤프트 및 가변밸브 타이밍장치의 오일공급구조.
The method of claim 1,
Advance direction flow path 200 is formed in the cam shaft 100 is formed of three or four around the cam shaft center bolt 400,
An oil supply structure of a cam shaft and a variable valve timing device for an automobile, wherein the supply speed of the oil supplied to the variable valve timing device can be improved.
제 1 항 또는 제 2 항에 있어서,
캠샤프트 센터볼트(400)와 캠샤프트(100) 사이에 형성되는 지각 방향 유로(500)는 캠샤프트 센터볼트(400) 둘레에 형성하되,
가변밸브 타이밍장치(300)에는 지각 방향 유로(500)로부터 가변밸브 타이밍장치(300)로 오일이 공급되는 다수 개의 오일공급로(600)를 형성한 것을 특징으로 하는 자동차용 캠샤프트 및 가변밸브 타이밍장치의 오일공급구조.
3. The method according to claim 1 or 2,
The perceptual flow path 500 formed between the cam shaft center bolt 400 and the cam shaft 100 is formed around the cam shaft center bolt 400,
The camshaft and variable valve timing for automobiles, wherein the variable valve timing device 300 is formed with a plurality of oil supply paths 600 through which oil is supplied from the perceptual flow path 500 to the variable valve timing device 300. Oil supply structure of the device.
제 1 항에 있어서,
진각 방향 유로(200)를 형성하기 위해 캠샤프트(100)에 일정 깊이를 가지는 오일 공급로(110)를 다수개 형성하고,
지각 방향 유로(500)를 형성하기 위해 캠샤프트 센터볼트(400)의 오일 공급로(410)가 형성되는 것을 특징으로 하는 자동차용 캠샤프트 및 가변밸브 타이밍장치의 오일공급구조.The method of claim 1,
To form a plurality of oil supply paths 110 having a predetermined depth in the cam shaft 100 to form the forward direction flow path 200,
Oil supply structure of the camshaft and variable valve timing apparatus for an automobile, characterized in that the oil supply path 410 of the camshaft center bolt 400 is formed to form the perceptual flow path (500).
KR1020110137139A 2011-12-19 2011-12-19 Oil supply structure for cam shaft and continuous variable valve timing apparatus for automobile KR101250676B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10415438B2 (en) 2017-09-07 2019-09-17 Hyundai Motor Company Oil drain preventing device for continuously variable valve timing apparatus

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Publication number Priority date Publication date Assignee Title
KR20030046699A (en) * 2001-12-06 2003-06-18 현대자동차주식회사 Oil circuit of continuously variable valve timing apparatus
KR20050064047A (en) * 2003-12-23 2005-06-29 현대자동차주식회사 Continuously variable valve timing oil circuit of engine
KR20110002700A (en) * 2009-07-02 2011-01-10 현대자동차주식회사 Oil circuit for continuously variable valve timing system of engine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030046699A (en) * 2001-12-06 2003-06-18 현대자동차주식회사 Oil circuit of continuously variable valve timing apparatus
KR20050064047A (en) * 2003-12-23 2005-06-29 현대자동차주식회사 Continuously variable valve timing oil circuit of engine
KR20110002700A (en) * 2009-07-02 2011-01-10 현대자동차주식회사 Oil circuit for continuously variable valve timing system of engine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10415438B2 (en) 2017-09-07 2019-09-17 Hyundai Motor Company Oil drain preventing device for continuously variable valve timing apparatus

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