KR101518917B1 - Engine having variable valve timing device - Google Patents

Engine having variable valve timing device Download PDF

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Publication number
KR101518917B1
KR101518917B1 KR1020130107425A KR20130107425A KR101518917B1 KR 101518917 B1 KR101518917 B1 KR 101518917B1 KR 1020130107425 A KR1020130107425 A KR 1020130107425A KR 20130107425 A KR20130107425 A KR 20130107425A KR 101518917 B1 KR101518917 B1 KR 101518917B1
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South Korea
Prior art keywords
camshaft
variable
rotation mechanism
cam
valve
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KR1020130107425A
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Korean (ko)
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KR20150028595A (en
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김동선
어윤한
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현대자동차 주식회사
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Priority to KR1020130107425A priority Critical patent/KR101518917B1/en
Priority to US14/140,317 priority patent/US20150068474A1/en
Publication of KR20150028595A publication Critical patent/KR20150028595A/en
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Publication of KR101518917B1 publication Critical patent/KR101518917B1/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
    • 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
    • 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
    • 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
    • F01L1/0532—Camshafts overhead type the cams being directly in contact with the driven 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
    • F01L1/34—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
    • 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
    • F01L1/34416—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 twisted cams
    • 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
    • F01L2001/0471—Assembled camshafts
    • F01L2001/0473—Composite camshafts, e.g. with cams or cam sleeve being able to move relative to the inner camshaft or a cam adjusting rod
    • 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
    • F01L2001/34486—Location and number of the means for changing the angular relationship
    • F01L2001/34489—Two phasers on one camshaft

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

Abstract

본 발명에 따른 가변 밸브 타이밍 장치를 구비한 엔진에 의하면, 포트를 개폐하도록 배치되는 밸브, 상기 포트가 닫히도록 상기 밸브를 탄성지지하는 탄성부재, 회전하면서 상기 포트를 열도록 상기 밸브를 움직이는 제1캠이 형성된 제1캠샤프트, 회전하면서 상기 포트를 닫도록 상기 밸브를 움직이는 제2캠이 형성된 제2캠샤프트, 상기 제1캠샤프트의 회전을 진각 또는 지각시키는 제1가변회전기구, 및 상기 제2캠샤프트의 회전을 진각 또는 지각시키는 제2가변회전기구를 포함할 수 있다. According to an engine provided with a variable valve timing device according to the present invention, there is provided an engine having a valve arranged to open and close a port, an elastic member elastically supporting the valve so that the port is closed, A first camshaft having a cam formed therein, a second camshaft having a second cam that rotates while moving the valve to close the port, a first variable rotation mechanism for advancing or retarding rotation of the first camshaft, And a second variable rotation mechanism for advancing or retarding the rotation of the second camshaft.

Description

가변 밸브 타이밍 장치를 구비한 엔진 {ENGINE HAVING VARIABLE VALVE TIMING DEVICE}TECHNICAL FIELD [0001] The present invention relates to an engine equipped with a variable valve timing device,

본 발명은 흡기 또는 배기포트를 개폐하는 흡기 또는 배기밸브의 열림시기, 열림지속시간, 및 닫힘시기를 제어함으로써 전체적인 에너지 소비 효율을 향상시키는 가변 밸브 타이밍 장치를 구비한 엔진에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an engine having a variable valve timing device that improves the overall energy consumption efficiency by controlling the opening timing, the open duration time, and the closing timing of an intake or exhaust valve for opening or closing an intake or exhaust port.

내연기관(internal combustion engine)은 연소실(combustion chamber)에 연료와 공기를 받아들여 이를 연소함으로써 동력을 형성한다. 공기를 흡입할 때에는 캠축(camshaft)의 구동에 의해 흡기밸브(intake valves)를 작동시키고, 흡기밸브가 열려있는 동안 공기가 연소실에 흡입되게 된다. An internal combustion engine forms a power by receiving fuel and air into a combustion chamber and burning it. When the air is sucked, the intake valves are actuated by driving the camshaft, and the air is sucked into the combustion chamber while the intake valve is opened.

또한, 캠축의 구동에 의해 배기밸브(exhaust valve)를 작동시키고 배기밸브가 열려있는 동안 공기가 연소실에서 배출되게 된다. Further, by driving the camshaft, the exhaust valve is operated and air is discharged from the combustion chamber while the exhaust valve is opened.

그런데, 엔진의 회전 속도나 부하 등 운전 조건에 따라 최적의 흡기밸브/배기밸브 개폐시점 및 개방 시간이 달라진다.However, the optimum opening / closing timing of the intake valve / exhaust valve and the opening time vary depending on the operating conditions such as the rotational speed of the engine and the load.

즉, 엔진의 회전속도에 따라 적절한 타이밍 (lift) 또는 밸브 오프닝/클로징 타이밍이 달라지게 된다. That is, an appropriate timing (lift) or valve opening / closing timing varies depending on the rotational speed of the engine.

한편, 하나의 캠을 이용하여 하나의 밸브를 열고 닫을 때, 열림시기를 지각시키면 닫힘시기도 지각되고, 열림시기를 진각시키면 닫힘시기도 진각되며, 열림시기와 닫힘시기 사이의 열림지속시간을 늘리거나 줄이기 위한 연구도 함께 진행되고 있다. On the other hand, when one valve is opened and closed by using one cam, when the opening timing is retarded, the closing timing is also perceived. When the opening timing is advanced, the closing timing is advanced, and the open duration between the opening timing and closing timing is increased Research is being carried out to reduce or reduce the number.

선행문헌 일본특개평6-280529가 있으며, 이 선행문헌에서는 캠샤프트에 하나의 밸브를 구동하기 위한 제1,2캠이 구성되어 있으나, 상기 제1,2캠을 개별적으로 지각시키거나 진각시키는 것은 불가능한 구조를 갖는다. Japanese Patent Application Laid-Open No. 6-280529 discloses a prior art document. In this prior art document, the first and second cams for driving one valve are configured on the camshaft, but the first and second cams are individually retarded or advanced It has an impossible structure.

본 발명은 밸브의 열림시기와 닫힘시기를 지각시키거나 진각시키며, 열림시기와 닫힘시기 사이의 열림지속시간도 함께 늘리거나 줄임으로써 전체적인 효율이 향상되는 가변 밸브 타이밍 장치를 구비한 엔진을 제공하는 것이 그 목적이다.It is an object of the present invention to provide an engine equipped with a variable valve timing device in which overall efficiency is improved by retarding or opening the valve opening and closing timing and increasing or decreasing the opening duration between the opening timing and the closing timing That is the purpose.

상술한 바와 같이 본 발명에 따른 가변 밸브 타이밍 장치를 구비한 엔진에 의하면, 포트를 개폐하도록 배치되는 밸브, 상기 포트가 닫히도록 상기 밸브를 탄성지지하는 탄성부재, 회전하면서 상기 포트를 열도록 상기 밸브를 움직이는 제1캠이 형성된 제1캠샤프트, 회전하면서 상기 포트를 닫도록 상기 밸브를 움직이는 제2캠이 형성된 제2캠샤프트, 상기 제1캠샤프트의 회전을 진각 또는 지각시키는 제1가변회전기구, 및 상기 제2캠샤프트의 회전을 진각 또는 지각시키는 제2가변회전기구를 포함할 수 있다. As described above, according to the engine provided with the variable valve timing device according to the present invention, the engine is provided with the valve arranged to open and close the port, the elastic member elastically supporting the valve so that the port is closed, A second camshaft formed with a second cam for rotating the valve so as to close the port while rotating, a first camshaft having a first cam for moving the first camshaft, a first camshaft having a first cam for moving the first camshaft, And a second variable rotation mechanism for advancing or retarding rotation of the second camshaft.

상기 제1가변회전기구 또는 상기 제2가변회전기구는 회전력을 전달받아서 상기 제1캠샤프트와 상기 제2캠샤프트를 회전시키는 풀리 또는 스프라켓에 형성될 수 있다. The first variable rotation mechanism or the second variable rotation mechanism may be formed in a pulley or a sprocket that receives the rotational force to rotate the first camshaft and the second camshaft.

상기 제2캠샤프트는 상기 제1캠샤프트 안쪽에 삽입되고, 상기 제2캠은 상기 제1캠샤프트를 관통하여 상기 밸브를 작동시킬 수 있다. The second camshaft is inserted into the first camshaft, and the second cam can pass through the first camshaft to operate the valve.

상기 제1가변회전기구 또는 상기 제2가변회전기구에는 상기 제1캠샤프트 및 상기 제2캠샤프트의 회전을 진각시키는 진각실과 지각시키는 지각실이 형성될 수 있다. The first variable rotation mechanism or the second variable rotation mechanism may be formed with an advancing chamber for advancing rotation of the first camshaft and the second camshaft and a retarding chamber for perceiving the rotation of the first camshaft and the second camshaft.

상기 진각실 또는 상기 지각실로 유압을 선택적으로 전달하도록 상기 제1가변회전기구 및 상기 제2가변회전기구와 대응하는 제1,2오일컨트롤밸브, 및 상기 제1,2오일컨트롤밸브로 유압을 펌핑하는 오일펌프를 포함할 수 있다. The first and second oil control valves corresponding to the first variable rotation mechanism and the second variable rotation mechanism to selectively transmit hydraulic pressure to the advance chamber or the retard chamber, And an oil pump.

상기 제1캠과 상기 제2캠의 회전위치를 감지하고, 크랭크샤프트의 회전수를 감지하고, 엔진의 부하를 연산하고, 가속페달의 위치를 감지하고, 이렇게 감지되는 운행정보에 따라서 상기 오일컨트롤밸브를 제어하는 제어부를 포함할 수 있다. The control unit senses the rotational position of the first cam and the second cam, senses the rotational speed of the crankshaft, calculates the load of the engine, detects the position of the accelerator pedal, And a control unit for controlling the valve.

상기 제1가변회전기구는 상기 제1캠샤프트의 일단부에 배치되고, 상기 제2가변회전기구는 상기 제2캠샤프트의 타단부에 배치될 수 있다. The first variable rotation mechanism may be disposed at one end of the first camshaft, and the second variable rotation mechanism may be disposed at the other end of the second camshaft.

상기 제1가변회전기구는 크랭크샤프트로부터 회전력을 전달받아서 상기 제1캠샤프트를 회전시키고, 상기 제2가변회전기구는 상기 제1캠샤프트의 회전에 의해서 상기 제2캠샤프트를 회전시키되, 상기 제1캠샤프트를 기준으로 상기 제2캠샤프트를 진각 또는 지각시킬 수 있다.Wherein the first variable rotation mechanism receives rotation force from a crankshaft to rotate the first camshaft and the second variable rotation mechanism rotates the second camshaft by rotation of the first camshaft, The second camshaft can be advanced or retarded with respect to the first camshaft.

이러한 목적을 달성하기 위한 본 발명에 따라서, 제1캠샤프트와 제1캠을 통해서 밸브의 열림시기를 지각시키거나 진각시키고, 제2캠샤프트와 제2캠을 통해서 밸브의 닫힘시기를 지각시키거나 진각시킬 수 있다. According to an aspect of the present invention, there is provided a valve timing control method for a valve timing control apparatus for controlling a valve timing of a valve by retarding or advancing a valve opening timing through a first camshaft and a first cam, Can advance.

아울러, 밸브의 열림시기와 닫힘시기를 개별적으로 조절함으로써 밸브의 열림지속시간을 용이하게 조절할 수 있다. In addition, the opening duration of the valve can be easily adjusted by individually adjusting the valve opening and closing timing.

도 1은 본 발명의 실시예에 따른 가변 밸브 타이밍 장치를 구비한 엔진의 일부 개략적인 사시도이다.
도 2는 본 발명의 실시예에 따른 가변 밸브 타이밍 장치를 구비한 엔진의 일부 개략적인 측면도이다.
도 3은 본 발명의 실시예에 따른 가변 밸브 타이밍 장치를 구비한 엔진의 개략적인 구성도이다.
도 4는 본 발명의 실시예에 따른 가변 밸브 타이밍 장치를 구비한 엔진의 일부 개략적인 구성도이다. 1 is a schematic perspective view of a portion of an engine with a variable valve timing device in accordance with an embodiment of the present invention.
2 is a schematic partial side view of an engine having a variable valve timing device according to an embodiment of the present invention.
3 is a schematic block diagram of an engine having a variable valve timing device according to an embodiment of the present invention.
4 is a schematic diagram of a part of an engine having a variable valve timing device according to an embodiment of the present invention.

이하, 본 발명의 바람직한 실시예를 첨부한 도면에 의거하여 상세하게 설명하면 다음과 같다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명의 실시예에 따른 가변 밸브 리프트 타이밍 장치를 구비한 엔진의 일부 개략적인 사시도이다. 1 is a schematic perspective view of a portion of an engine with a variable valve lift timing device in accordance with an embodiment of the present invention.

도 1을 참조하면, 엔진은 제1캠샤프트(100), 제2캠샤프트(110), 제1캠(105), 및 제2캠(115)을 포함한다. 상기 제1캠샤프트(100)와 상기 제2캠샤프트(110)는 동축상에 배치되어 회전되는 구조를 갖는다. Referring to FIG. 1, the engine includes a first camshaft 100, a second camshaft 110, a first cam 105, and a second cam 115. The first camshaft 100 and the second camshaft 110 are arranged coaxially and rotated.

상기 제1캠샤프트(100)의 일단부에 상기 제1캠(105)이 형성되고, 상기 제2캠샤프트(110)의 타단부에 상기 제2캠(115)이 형성되고, 상기 제1캠(105)과 상기 제2캠(115)은 서로 인접하게 배치될 수 있다. The first cam 105 is formed at one end of the first camshaft 100 and the second cam 115 is formed at the other end of the second camshaft 110, The first cam 105 and the second cam 115 may be disposed adjacent to each other.

본 발명의 실시예에서, 상기 제1캠(105)과 상기 제2캠(115)은 하나의 밸브(120)를 열거나 닫는 구조를 가지며, 상기 제1캠샤프트(100)는 크랭크샤프트(미도시)에 의해서 회전되어 지각 또는 진각되어 상기 제1캠(105)의 회전을 지각시키거나 진각시킨다. The first cam 105 and the second cam 115 have a structure in which one valve 120 is opened or closed and the first cam shaft 100 is connected to a crankshaft The rotation of the first cam 105 is perceived or advanced.

아울러, 상기 제2캠샤프트(110)는 크랭크샤프트에 의해서 회전되어 지각 또는 진각되어 상기 제2캠(115)의 회전을 지각시키거나 진각시킬 수 있다. In addition, the second camshaft 110 may be retarded or advanced by being rotated by the crankshaft to retard or advance the rotation of the second cam 115.

도 2는 본 발명의 실시예에 따른 가변 밸브 타이밍 장치를 구비한 엔진의 일부 개략적인 측면도이다. 2 is a schematic partial side view of an engine having a variable valve timing device according to an embodiment of the present invention.

도 2를 참조하면, 상부에 제1캠(105), 제2캠(115)이 배치되고, 상기 제1캠 및 제2캠(115)의 하부에 밸브(120)가 배치된다. 그리고, 탄성부재(200)는 상기 밸브(120)를 상부로 탄성적으로 지지하여 상기 밸브(120)를 상기 제1,2캠(105, 115)에 밀착시킨다. Referring to FIG. 2, a first cam 105 and a second cam 115 are disposed on the upper portion, and a valve 120 is disposed below the first cam and the second cam 115. The elastic member 200 resiliently supports the valve 120 upward so that the valve 120 is brought into close contact with the first and second cams 105 and 115.

도 2의 (a)에서, 상기 제1캠(105)과 상기 제2캠(115)이 모두 지각되어, 상기 밸브(120)의 열림시기와 닫힘시기가 모두 늦어지고, 상기 밸브(120)의 열림지속시간은 짧아진다. 2 (a), both the first cam 105 and the second cam 115 are retarded so that the opening and closing timing of the valve 120 is delayed, The open duration is shortened.

도 2의 (b)에서, 상기 제1캠(105)은 지각되고, 상기 제2캠(115)은 진각되어, 상기 밸브(120)의 열림시기는 빨리지고, 닫힘시기는 늦어지며, 상기 밸브(120)의 열림지속시간은 길어진다. In FIG. 2 (b), the first cam 105 is retarded and the second cam 115 is advanced so that the opening timing of the valve 120 is fast, the closing timing is delayed, The open duration time of the battery 120 is lengthened.

도 2의 (c)에서, 상기 제1캠(105)과 상기 제2캠(115)이 모두 진각되어, 상기 밸브(120)의 열림시기와 닫힘시기가 모두 빨라지고, 상기 밸브(120)의 열림지속시간은 짧아진다. 2 (c), both the first cam 105 and the second cam 115 are advanced to open and close the valve 120, and the valve 120 is opened The duration is shortened.

도 3은 본 발명의 실시예에 따른 가변 밸브 타이밍 장치를 구비한 엔진의 개략적인 구성도이다. 3 is a schematic block diagram of an engine having a variable valve timing device according to an embodiment of the present invention.

도 3을 참조하면, 가변 밸브 타이밍 장치를 구비한 엔진은 제어부(300), 오일펌프(310), 제1오일컨트롤밸브(320), 제2오일컨트롤밸브(330), 제1가변회전기구(340), 제2가변회전기구(350), 제1캠샤프트(100), 제2캠샤프트(110), 제1캠(105), 및 제2캠(115)을 포함한다. 3, an engine having a variable valve timing device includes a control unit 300, an oil pump 310, a first oil control valve 320, a second oil control valve 330, a first variable rotation mechanism A second cam shaft 110, a first cam 105, and a second cam 115. The second camshaft 100 includes a first cam 100, a second cam 100,

상기 제1캠샤프트(100)의 왼쪽 단부에는 상기 제1가변회전기구(340)가 배치되고, 상기 제1캠샤프트(100)의 내부에 상기 제2캠샤프트(110)가 삽입된다. 그리고, 상기 제2캠샤프트(110)의 오른쪽 단부에는 제2가변회전기구(350)가 배치된다. The first variable rotation mechanism 340 is disposed at the left end of the first camshaft 100 and the second camshaft 110 is inserted into the first camshaft 100. A second variable rotation mechanism 350 is disposed at the right end of the second camshaft 110.

상기 제1캠(105)은 상기 제1캠샤프트(100)의 외주면의 일측에 돌출되어 형성되고, 상기 제2캠(115)은 상기 제1캠샤프트(100)를 관통하여 상기 제1캠샤프트(100)의 외주면의 일측에 돌출되어 형성된다. The first cam 105 protrudes from one side of the outer circumferential surface of the first cam shaft 100 and the second cam 115 penetrates the first cam shaft 100, (Not shown).

본 발명의 실시예에서, 상기 제1캠(105)과 상기 제2캠(115)은 상기 제1캠샤프트(100)의 외주면에서 동일한 높이로 형성될 수 있다. In the embodiment of the present invention, the first cam 105 and the second cam 115 may be formed at the same height on the outer circumferential surface of the first camshaft 100.

상기 제1가변회전기구(340)는 상기 제1캠샤프트(100)를 통해서 상기 제1캠(105)을 지각 또는 진각시키고, 상기 제2가변회전기구(350)는 상기 제2캠샤프트(110)를 통해서 상기 제2캠(115)을 지각 또는 진각시킨다. The first variable rotation mechanism 340 may retard or advance the first cam 105 through the first camshaft 100 and the second variable rotation mechanism 350 may rotate the second camshaft 110 The second cam 115 is retarded or advanced.

상기 제1가변회전기구(340)의 내부에는 지각실(342 또는 352)과 진각실(344 또는 354)이 형성되고, 상기 제1오일컨트롤밸브(320)는 상기 지각실(342 또는 352) 또는 상기 진각실(344 또는 354)로 오일을 공급하여 상기 제1캠샤프트(100)를 지각 또는 진각시킨다. A retard chamber 342 or 352 and an advance chamber 344 or 354 are formed in the first variable rotation mechanism 340 and the first oil control valve 320 is connected to the retard chamber 342 or 352 Oil is supplied to the advance chamber (344 or 354) to retard or advance the first camshaft (100).

아울러, 상기 제2가변회전기구(350)의 내부에는 지각실(342 또는 352)과 진각실(344 또는 354)이 형성되고, 상기 제2오일컨트롤밸브(330)는 상기 지각실(342 또는 352) 또는 상기 진각실(344 또는 354)로 오일을 공급하여 상기 제2캠샤프트(110)를 지각 또는 진각시킨다. A retard chamber 342 or 352 and an advance chamber 344 or 354 are formed in the second variable rotation mechanism 350 and the second oil control valve 330 is connected to the retard chamber 342 or 352 ) Or oil is supplied to the advance chamber (344 or 354) to retard or advance the second camshaft (110).

상기 오일펌프(310)는 상기 제1오일컨트롤밸브(320)와 상기 제2오일컨트롤밸브(330)로 설정된 압력으로 오일을 펌핑한다. The oil pump 310 pumps the oil to the pressure set by the first oil control valve 320 and the second oil control valve 330.

그리고, 상기 제어부(300)는 열기캠(제1캠)의 위치, 닫기캠(제2캠)의 위치, 엔진의 회전수(RPM), 엔진의 부하, 및 악셀페달위치(미도시) 등을 포함하는 운행정보에 따라서 상기 제1오일컨트롤밸브(320)와 상기 제2오일컨트롤밸브(330)를 제어하여 상기 제1캠(105)과 상기 제2캠(115)을 개별적으로 지각 또는 진각시킨다. The control unit 300 controls the position of the open cam (first cam), the position of the close cam (second cam), the number of revolutions of the engine (RPM), the load of the engine and the position of the accelerator pedal The first oil control valve 320 and the second oil control valve 330 are controlled in accordance with the travel information included to individually retard or advance the first cam 105 and the second cam 115 .

도 4는 본 발명의 실시예에 따른 가변 밸브 타이밍 장치를 구비한 엔진의 일부 개략적인 구성도이다. 4 is a schematic diagram of a part of an engine having a variable valve timing device according to an embodiment of the present invention.

도 4를 참조하면, 엔진에서 크랭크샤프트(420)가 회전력을 출력하고, 상기 제1가변회전기구(340)는 체인 또는 벨트(400)를 통해서 상기 크랭크샤프트(420)로부터 회전력을 전달받아 상기 제1캠샤프트(100)를 회전시킨다. 아울러, 상기 제1가변회전기구(340)는 상기 제1캠샤프트(100)의 회전을 지각시키거나 진각시킨다. 4, the crankshaft 420 of the engine outputs a rotational force, and the first variable rotation mechanism 340 receives rotational force from the crankshaft 420 via the chain or the belt 400, 1 cam shaft 100 is rotated. In addition, the first variable rotation mechanism 340 retards or advances the rotation of the first camshaft 100.

상기 제2가변회전기구(350)는 상기 제1캠샤프트(100)에 의해서 회전되고, 상기 제2가변회전기구(350)는 상기 제1캠샤프트(100)를 기준으로 상기 제2캠샤프트(110)를 지각시키거나 진각시킬 수 있다. The second variable rotation mechanism 350 is rotated by the first camshaft 100 and the second variable rotation mechanism 350 is rotated by the second camshaft 100 with respect to the first camshaft 100, 110) can be perceived or advanced.

도 4에서는 상기 제1가변회전기구(340)가 상기 크랭크샤프트(420)로부터 회전력을 전달받고, 상기 제2가변회전기구(350)는 상기 제1캠샤프트(100)로부터 회전력을 전달받는 것으로 설명하였으나, 상기 제2가변회전기구(350)가 상기 크랭크샤프트(420)로부터 회전력을 전달받고, 상기 제1가변회전기구(340)는 상기 제2캠샤프트(110)로부터 회전력을 전달받을 수 있다. 4 shows that the first variable rotation mechanism 340 receives the rotational force from the crankshaft 420 and the second variable rotation mechanism 350 receives the rotational force from the first camshaft 100 The second variable rotation mechanism 350 receives the rotational force from the crankshaft 420 and the first variable rotation mechanism 340 receives the rotational force from the second camshaft 110. [

아울러, 상기 제1가변회전기구(340)와 상기 제2가변회전기구(350)가 상기 크랭크샤프트(420)로부터 개별적으로 회전력을 전달받을 수 있다. In addition, the first variable rotation mechanism 340 and the second variable rotation mechanism 350 may receive rotational force from the crankshaft 420 individually.

이상으로 본 발명에 관한 바람직한 실시예를 설명하였으나, 본 발명은 상기 실시예에 한정되지 아니하며, 본 발명의 실시예로부터 당해 발명이 속하는 기술분야에서 통상의 지식을 가진 자에 의한 용이하게 변경되어 균등하다고 인정되는 범위의 모든 변경을 포함한다.While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, And all changes to the scope that are deemed to be valid.

100: 제1캠샤프트 105: 제1캠
110: 제2캠샤프트 115: 제2캠
120: 밸브 200: 탄성부재
300: 제어부 310: 오일펌프
320: 제1오일컨트롤밸브 330: 제2오일컨트롤밸브
340: 제1가변회전기구 350: 제2가변회전기구
342, 352: 지각실 344, 354: 진각실
400: 체인(또는 벨트) 420: 크랭크샤프트 100: first camshaft 105: first cam
110: second camshaft 115: second cam
120: valve 200: elastic member
300: control unit 310: oil pump
320: first oil control valve 330: second oil control valve
340: first variable rotation mechanism 350: second variable rotation mechanism
342, 352: perception chamber 344, 354: advancing chamber
400: chain (or belt) 420: crankshaft

Claims (8)

포트를 개폐하도록 배치되는 밸브;
상기 포트가 닫히도록 상기 밸브를 탄성지지하는 탄성부재;
회전하면서 상기 포트를 열도록 상기 밸브를 움직이는 제1캠이 형성된 제1캠샤프트;
회전하면서 상기 포트를 닫도록 상기 밸브를 움직이는 제2캠이 형성된 제2캠샤프트;
상기 제1캠샤프트의 회전을 진각 또는 지각시키는 제1가변회전기구; 및
상기 제2캠샤프트의 회전을 진각 또는 지각시키는 제2가변회전기구; 를 포함하고,
상기 제2캠샤프트는 상기 제1캠샤프트 안쪽에 삽입되고, 상기 제2캠은 상기 제1캠샤프트를 관통하여 상기 밸브를 작동시키되,
상기 제1가변회전기구는 상기 제1캠샤프트의 일단부에 배치되고, 상기 제2가변회전기구는 상기 제2캠샤프트의 타단부에 배치되며,
상기 제1가변회전기구는 크랭크샤프트로부터 회전력을 전달받아서 상기 제1캠샤프트를 회전시키고, 상기 제2가변회전기구는 상기 제1캠샤프트의 회전에 의해서 상기 제2캠샤프트를 회전시키되, 상기 제1캠샤프트를 기준으로 상기 제2캠샤프트를 진각 또는 지각시키는 가변 밸브 타이밍 장치를 구비한 엔진.A valve disposed to open and close the port;
An elastic member elastically supporting the valve so that the port is closed;
A first camshaft having a first cam for moving the valve to open the port while rotating;
A second cam shaft having a second cam for moving the valve to close the port while rotating;
A first variable rotation mechanism for advancing or retarding the rotation of the first camshaft; And
A second variable rotation mechanism for advancing or retarding the rotation of the second camshaft; Lt; / RTI >
The second camshaft is inserted into the first camshaft and the second cam is passed through the first camshaft to actuate the valve,
Wherein the first variable rotation mechanism is disposed at one end of the first camshaft and the second variable rotation mechanism is disposed at the other end of the second camshaft,
Wherein the first variable rotation mechanism receives rotation force from a crankshaft to rotate the first camshaft and the second variable rotation mechanism rotates the second camshaft by rotation of the first camshaft, And a variable valve timing device for advancing or retarding the second camshaft with respect to the first camshaft. 제1항에서,
상기 제1가변회전기구 또는 상기 제2가변회전기구는 회전력을 전달받아서 상기 제1캠샤프트와 상기 제2캠샤프트를 회전시키는 풀리 또는 스프라켓에 형성되는 가변 밸브 타이밍 장치를 구비한 엔진. The method of claim 1,
Wherein the first variable rotation mechanism or the second variable rotation mechanism includes a variable valve timing device formed on a pulley or a sprocket that receives rotation force to rotate the first camshaft and the second camshaft. 삭제delete 제1항에서,
상기 제1가변회전기구 또는 상기 제2가변회전기구에는 상기 제1캠샤프트 및 상기 제2캠샤프트의 회전을 진각시키는 진각실과 지각시키는 지각실이 형성되는 가변 밸브 타이밍 장치를 구비한 엔진. The method of claim 1,
Wherein the first variable rotation mechanism or the second variable rotation mechanism is provided with a variable valve timing device in which an advancing chamber for advancing rotation of the first camshaft and the second camshaft and a retarding chamber for perceiving are formed. 제4항에서,
상기 진각실 또는 상기 지각실로 유압을 선택적으로 전달하도록 상기 제1가변회전기구 및 상기 제2가변회전기구와 대응하는 제1,2오일컨트롤밸브; 및
상기 제1,2오일컨트롤밸브로 유압을 펌핑하는 오일펌프; 를 포함하는 가변 밸브 타이밍 장치를 구비한 엔진. 5. The method of claim 4,
First and second oil control valves corresponding to the first variable rotation mechanism and the second variable rotation mechanism to selectively transmit hydraulic pressure to the advance chamber or the retard chamber; And
An oil pump for pumping hydraulic pressure to the first and second oil control valves; And a variable valve timing device. 제5항에서,
상기 제1캠과 상기 제2캠의 회전위치를 감지하고, 크랭크샤프트의 회전수를 감지하고, 엔진의 부하를 연산하고, 가속페달의 위치를 감지하고,
이렇게 감지되는 운행정보에 따라서 상기 제1,2오일컨트롤밸브를 제어하는 제어부; 를 포함하는 가변 밸브 타이밍 장치를 구비한 엔진. The method of claim 5,
Sensing the rotational position of the first cam and the second cam, sensing the rotational speed of the crankshaft, calculating the load of the engine, sensing the position of the accelerator pedal,
A control unit for controlling the first and second oil control valves according to the driving information sensed by the controller; And a variable valve timing device. 삭제delete 삭제delete
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KR102417382B1 (en) * 2016-12-14 2022-07-06 현대자동차주식회사 Method for controlling valve timing and valve duration using variable valve timimg apparatus and continuously variable valve dulation apparatus
US11193399B2 (en) 2018-11-27 2021-12-07 Borgwarner, Inc. Variable camshaft timing assembly
US10954829B2 (en) 2018-12-19 2021-03-23 Borgwarner, Inc. Oldham flexplate for concentric camshafts controlled by variable camshaft timing
US11280228B2 (en) 2020-07-07 2022-03-22 Borgwarner, Inc. Variable camshaft timing assembly
US11852054B2 (en) 2021-09-17 2023-12-26 Borgwarner Inc. Variable camshaft timing system
CN115263483B (en) * 2022-07-01 2024-03-26 奇瑞汽车股份有限公司 Cam, cam shaft and engine

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