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KR101165167B1 - Cylinder block of in-line multi cylinders engine - Google Patents

Cylinder block of in-line multi cylinders engine Download PDF

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Publication number
KR101165167B1
KR101165167B1 KR1020110010535A KR20110010535A KR101165167B1 KR 101165167 B1 KR101165167 B1 KR 101165167B1 KR 1020110010535 A KR1020110010535 A KR 1020110010535A KR 20110010535 A KR20110010535 A KR 20110010535A KR 101165167 B1 KR101165167 B1 KR 101165167B1
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cylinder block
balance
cam
chamber
oil
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강민우
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대동공업주식회사
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Priority to PCT/KR2012/000859 priority patent/WO2012108652A2/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02FCYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00Cylinders; Cylinder heads 
    • F02F1/18Other cylinders
    • F02F1/20Other cylinders characterised by constructional features providing for lubrication
    • 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
    • F01M11/00Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/02Arrangements of lubricant conduits
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02Valve drive
    • F01L1/04Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/047Camshafts
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/46Component parts, details, or accessories, not provided for in preceding subgroups
    • 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
    • F01M9/00Lubrication means having pertinent characteristics not provided for in, or of interest apart from, groups F01M1/00 - F01M7/00
    • F01M9/10Lubrication of valve gear or auxiliaries
    • F01M9/102Lubrication of valve gear or auxiliaries of camshaft bearings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02FCYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00Cylinders; Cylinder heads 
    • F02F1/18Other cylinders
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02FCYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F7/00Casings, e.g. crankcases
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/22Compensation of inertia forces
    • F16F15/26Compensation of inertia forces of crankshaft systems using solid masses, other than the ordinary pistons, moving with the system, i.e. masses connected through a kinematic mechanism or gear system
    • F16F15/264Rotating balancer shafts
    • F16F15/265Arrangement of two or more balancer shafts
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02Valve drive
    • F01L1/04Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/08Shape of cams
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02Valve drive
    • F01L1/04Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/047Camshafts
    • F01L2001/054Camshafts in cylinder block
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L2250/00Camshaft drives characterised by their transmission means
    • F01L2250/06Camshaft drives characterised by their transmission means the camshaft being driven by gear wheels
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L2810/00Arrangements solving specific problems in relation with valve gears
    • F01L2810/02Lubrication
    • 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
    • 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
    • F01M11/00Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/02Arrangements of lubricant conduits
    • F01M2011/023Arrangements of lubricant conduits between oil sump and cylinder head

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Abstract

다기통 엔진의 오일 공급구조를 개시한다. 본 발명에 따른 오일 공급구조는, 밸런스 축과 캠축을 구비한 다기통 엔진에 있어서, 밸런스 축과 캠축은 그 축 중심에 축 방향을 따라 길게 형성되는 오일통로를 가지면서 그 외경부에는 실린더 블록과 접속을 위한 다수의저널을 구비하며, 다수의 저널 중 각 축의 최선단에 위치한 저널에는 이 저널의 외경부에서 상기 오일통로로 이어지는 입유로가 형성되고, 최선단 저널을 제외한 저널에는 상기 오일통로에서 해당 저널의 외경부로 이어지는 배유로가 형성되며, 실린더 블록 전면부에는, 밸런스 축의 최선단 저널과 캠축의 최선단 저널 주변을 경유하여 실린더 블록 하부에서 상부로 연장되는 급유로가 형성됨으로써, 하나의 급유로를 이용하여 캠축과 밸런스 축에 윤활을 위한 오일을 연속 제공할 수 있다.Disclosed is an oil supply structure of a multi-cylinder engine. The oil supply structure according to the present invention is a multi-cylinder engine having a balance shaft and a cam shaft, wherein the balance shaft and the cam shaft have an oil passage formed along the axial direction at the center of the shaft, and the outer diameter portion includes a cylinder block and It is provided with a plurality of journals for access, and the journal located at the top of each axis of the plurality of journals is formed with an inlet passage leading from the outer diameter of the journal to the oil passage. An oil passage is formed leading to the outer diameter portion of the journal, and an oil supply passage is formed in the cylinder block front portion extending from the lower portion of the cylinder block to the upper portion through the balance journal's outermost journal and the cam's outermost journal. The furnace can be used to continuously supply oil for lubrication to the camshaft and balance shaft.

Description

직렬 다기통 엔진의 실린더 블록{Cylinder block of In-Line multi cylinders engine}Cylinder block of in-line multi-cylinder engine

본 발명은 차량용 엔진의 실린더 블록에 관한 것으로, 상세하게는 직렬 다기통 엔진의 실린더 블록에 관한 것이다.The present invention relates to a cylinder block of a vehicle engine, and more particularly to a cylinder block of a series multi-cylinder engine.

도 1은 종래 일반적인 직렬 4기통 엔진에 적용되는 실린더 블록을 나타낸 도면이다.1 is a view showing a cylinder block applied to a conventional general four-cylinder engine.

도 1을 참조하면, 종래 일반적인 직렬 4기통 엔진의 실린더 블록(1)은, 4개의 실린더 보어(2)가 직렬로 형성된 구성을 기반으로, 실린더 보어(2) 양 옆의 실린더 블록(1)에는 좌?우 한 쌍의 밸런스 실(3)이 실린더 블록(1)의 길이 방향으로 길게 형성되어 있다. Referring to FIG. 1, a cylinder block 1 of a conventional general four-cylinder engine is based on a configuration in which four cylinder bores 2 are formed in series. A pair of left and right balance seals 3 is formed long in the longitudinal direction of the cylinder block 1.

상기 밸런스 실(3)에는 엔진 구동에 따른 진동을 상쇄시키는 좌?우 한 쌍의 밸런스 축(4)이 설치되며, 우측 밸런스 실 직상방에는 캠축(6) 장착을 위한 캠실(5)이 형성된다. 그리고 캠실(5)에 설치되는 캠축(6)의 캠면 위치에 대응하여 복수의 태핏홀(7)이 상기 캠실(5)과 수직으로 연통 형성된다.The balance chamber 3 is provided with a pair of left and right balance shafts 4 for canceling vibration caused by engine driving, and a cam chamber 5 for mounting the cam shaft 6 is formed directly above the right balance chamber. . In addition, a plurality of tappet holes 7 are formed in communication with the cam chamber 5 perpendicularly to the cam surface position of the cam shaft 6 provided in the cam chamber 5.

태핏홀(7) 내에는 피스톤의 흡?배기 제어를 위한 밸브개폐에 관여하는 태핏(8)이 설치되며, 이러한 태핏(8)의 하단은 상기 캠실(5)에 설치되는 캠축(6)의 캠면(부호 생략)과 기구적으로 접속함으로써, 캠축(6) 회전에 의해 태핏홀(7) 내에서 승강 이동하면서 밸브의 개폐를 단속한다. The tappet 8 is provided in the tappet hole 7 to engage in valve opening and closing for controlling the intake and exhaust of the piston, and the lower end of the tappet 8 is the cam surface of the cam shaft 6 installed in the cam chamber 5. By mechanically connecting (not shown), opening and closing of the valve is interrupted while moving up and down within the tappet hole 7 by the cam shaft 6 rotation.

상기 태핏홀(7)로는 태핏(8)의 윤활을 위해 오일이 실린더 헤드(미도시)로부터 지속적으로 공급되며, 태핏(8)에 대한 윤활작용 후 해당 오일은 상기 캠실(5) 측으로 흘러 내려간다. 그리고 상기 캠축(6) 및 밸런스 축(4)에는 실린더 블록(1)과 접속되는 특정 위치(저널)로 오일이 공급될 수 있도록, 해당 축의 그 길이방향으로 중앙통로(부호 생략)가 형성되어 있다.Oil is continuously supplied from the cylinder head (not shown) to the tappet hole 7 for lubrication of the tappet 8, and after lubrication of the tappet 8, the oil flows down to the cam chamber 5. . In addition, the cam shaft 6 and the balance shaft 4 are formed with a central passage (not shown) in the longitudinal direction of the shaft so that oil can be supplied to a specific position (journal) connected to the cylinder block 1. .

상기 캠실(5)과 밸런스 실(3)은 이들 공간 사이에 일정 간격으로 형성되는 통공(9)으로서 상호 연통되어 있으며, 따라서 상기 태핏홀(7)을 거쳐 캠실(5) 측으로 모아진 오일은 상기 통공(9)을 통해 밸런스 실(3)로 떨어지게 된다. 밸런스 실(3) 측으로 떨어진 오일은 밸런스 실(3)의 오일과 합류하여 밸런스 실(3) 하부로 연장되는 다른 경로(R)를 거쳐 크랭크 실(미도시)로 흘러 들어갈 수 있게 되어 있다. The cam chamber 5 and the balance chamber 3 communicate with each other as through holes 9 formed at a predetermined interval between these spaces, so that the oil collected through the tappet hole 7 toward the cam chamber 5 side is passed through the holes. Through (9) it falls to the balance seal (3). The oil dropped to the balance seal 3 side is allowed to join the oil of the balance seal 3 and flow into the crank seal (not shown) via another path R extending below the balance seal 3.

위와 같이, 종래 직렬 4기통 엔진의 실린더 블록은, 밸러스 축이 회전 가능하게 설치되는 밸런스 실과 캠축 설치를 위한 캠실이 통공을 통해 상호 연통 가능하게 연결된 구조로 이루어져 있다. 그러나 이와 같은 구조는, 엔진 구동과정에서 캠실로부터 떨어진 오일이 밸런스 실 내에서 빠르게 회전하는 밸런스 축에 충돌함으로써 연무(煙霧)가 발생하는 문제가 있다.
As described above, the cylinder block of the conventional four-cylinder engine has a structure in which a balance chamber in which a balance shaft is rotatably installed and a cam chamber for installing a cam shaft are connected to each other through a through hole. However, such a structure has a problem in that mist is generated because the oil separated from the cam chamber in the engine driving process collides with the balance shaft which rotates quickly in the balance chamber.

본 발명이 해결하려는 기술적 과제는, 캠실로부터 낙하된 오일이 밸런스 축과 충돌하여 발생하는 연무(煙霧)현상을 방지할 수 있으며, 따라서 엔진 효율을 보다 향상시킬 수 있으면서 정숙도 높은 엔진을 구현할 수 있는 직렬 다기통 엔진의 실린더 블록을 제공하고자 한다.
The technical problem to be solved by the present invention, it is possible to prevent the mist phenomenon caused by the oil falling from the cam chamber collide with the balance shaft, and thus it is possible to implement a high-quiet engine while improving the engine efficiency more To provide a cylinder block of a serial multicylinder engine.

상기한 과제를 해결하기 위한 수단으로서 본 발명은, 실린더 보어 양 옆에 한 쌍의 밸런스 축이 회전 가능하게 장치되는 좌?우 한 쌍의 밸런스 실이 실린더 블록의 길이 방향으로 길게 형성되며; 상기 좌?우 한 쌍의 밸런스 실 중, 우측 밸런스 실 직상방에는 실린더 블록 내에서 상기 밸런스 축과 평행을 이루며 이격 배치되는 캠축 설치를 위한 캠실이 형성되고; 상기 캠실에 설치되는 캠축의 캠면 위치에 대응하여 태핏 설치를 위한 복수의 태핏홀이 상기 캠실과 수직으로 연통 형성되며; 상기 캠실과 밸런스 실은 격벽을 통해 상호 분리 구획되는 구성을 갖고; 캠축에 대한 윤활작용 후 상기 격벽 상부면으로 드레인된 오일이 오일 팬으로 리턴될 수 있도록, 상기 격벽 일측에 입구를 형성한 오일드레인관이 상기 격벽으로부터 실린더 블록 저면부로 연장 형성되는 것을 특징으로 하는 직렬 다기통 엔진의 실린더 블록을 제공한다. As a means for solving the above-mentioned problems, the present invention provides a pair of left and right balance seals in which a pair of balance shafts are rotatably mounted on both sides of the cylinder bore so as to extend in the longitudinal direction of the cylinder block; Among the left and right pairs of balance chambers, a cam chamber for cam shaft installation, which is disposed parallel to the balance shaft and spaced apart from the right balance chamber, is formed in a cylinder block; A plurality of tappet holes for tappet installation are formed in communication with the cam chamber vertically corresponding to the cam surface position of the cam shaft installed in the cam chamber; The cam chamber and the balance chamber have a configuration in which the cam chamber and the balance chamber are separated from each other through a partition wall; An oil drain tube having an inlet formed on one side of the partition wall extends from the partition wall to the bottom of the cylinder block so that oil drained to the upper surface of the partition wall after lubrication of the camshaft can be returned to the oil pan. Provides cylinder blocks for multi-cylinder engines.

본 실시예에서 상기 캠실과 밸런스 실 사이의 일정 공기압 유지를 위한 통기홀이 상기 격벽 일측에 형성될 수 있다.In this embodiment, a ventilation hole for maintaining a constant air pressure between the cam chamber and the balance chamber may be formed on one side of the partition wall.

이 경우 상기 통기홀은, 직렬로 형성되는 복수의 실린더 보어 중 최후방의 실린더 보어와 대응되는 위치의 격벽에 형성됨이 바람직하다.In this case, the vent hole is preferably formed in a partition wall at a position corresponding to the rearmost cylinder bore of the plurality of cylinder bores formed in series.

또한, 상기 격벽 상면은 오일드레인관 입구 측을 향해 하향 경사지게 형성된 구성일 수 있다.In addition, the upper surface of the partition wall may be configured to be inclined downward toward the oil drain pipe inlet side.

그리고, 상기 오일드레인관 중간에는 터보차져로부터 연장된 드레인관이 연결될 수 있는 커넥팅 홀이 더 형성될 수도 있다.
In addition, a connecting hole may be further formed in the middle of the oil drain tube to connect the drain tube extending from the turbocharger.

본 발명의 실시예에 의한 직렬 다기통 엔진의 실린더 블록에 따르면, 밸러스 축이 회전 가능하게 설치되는 밸런스 실과 캠축 설치를 위한 캠실이 격벽을 통해 상호 분리 구획된 구조를 가진다. 이에 따라, 종래와 같이 캠실로부터 낙하된 오일이 밸런스 축과 충돌하여 발생하는 연무(煙霧)현상을 방지할 수 있으며, 보다 정숙도 높은 엔진을 구현할 수 있다.According to the cylinder block of the series multi-cylinder engine according to the embodiment of the present invention, the balance chamber in which the balance shaft is rotatably installed and the cam chamber for installing the cam shaft have partitioned structures separated from each other through partition walls. As a result, it is possible to prevent mist from occurring when the oil dropped from the cam chamber collides with the balance shaft as in the related art, and a more quiet engine can be realized.

또한, 통기홀을 통해 밸런스 실과 캠실은 물론, 실린더 블록 상면과 크랭크 실이 공기가 통과 가능하도록 상호 연통됨으로써, 실린더 블록 내부에 구획된 공간은 일정한 공기압으로 유지될 수 있으며, 따라서 공간 밀폐에 따른 공기압 상승으로 인한 오일의 역류나 구동효율 저하와 같은 문제를 해소할 수 있다.
In addition, the balance chamber and the cam chamber, as well as the cylinder block upper surface and the crank seal communicate with each other to allow air to pass through the ventilation holes, so that the space partitioned inside the cylinder block can be maintained at a constant air pressure, and thus the air pressure due to space sealing. Problems such as backflow of oil and deterioration of driving efficiency due to the rise can be solved.

도 1은 종래기술에 따른 직렬 다기통 엔진의 실린더 블록의 절개 사시도.
도 2는 본 발명의 실시예에 따른 직렬 다기통 엔진 실린더 블록의 사시도.
도 3은 도 2에 나타난 실린더 블록의 내부 구조를 보여주기 위한 일부 절개 사시도.
도 4는 도 3에 나타난 실린더 블록을 A-A선 방향에서 바라본 단면도.
도 5는 도 3에 나타난 실린더 블록을 B-B선 방향에서 바라본 단면도.
1 is a cutaway perspective view of a cylinder block of a tandem multicylinder engine according to the prior art;
2 is a perspective view of a series multi-cylinder engine cylinder block according to an embodiment of the present invention.
3 is a partially cutaway perspective view showing the internal structure of the cylinder block shown in FIG.
4 is a cross-sectional view of the cylinder block shown in FIG.
FIG. 5 is a sectional view of the cylinder block shown in FIG. 3 as viewed from the BB line direction. FIG.

이하, 첨부도면을 참조하여 본 발명의 바람직한 실시예를 상세히 설명하기로 한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 2는 본 발명의 실시예에 따른 직렬 다기통 엔진 실린더 블록의 사시도이며, 도 3은 도 2에 나타난 실린더 블록의 내부 구조를 보여주기 위한 일부 절개 사시도이다. 이들 도면을 참조하여 본 발명에 따른 직렬 다기통 엔진에 적용되는 실린더 블록에 대해 먼저 개략적으로 살펴보기로 한다. Figure 2 is a perspective view of a series multi-cylinder engine cylinder block according to an embodiment of the present invention, Figure 3 is a partially cut perspective view for showing the internal structure of the cylinder block shown in FIG. Referring to these drawings, a brief description will be made first of a cylinder block applied to a series multi-cylinder engine according to the present invention.

도 2 내지 도 3의 도시와 같이, 본 실시예에 따른 실린더 블록(10)은 피스톤 설치를 위한 실린더 보어(20)가 직렬로 형성된 구조를 가진다. 실린더 보어(20) 양 옆의 실린더 블록(10)에는 좌?우 한 쌍의 밸런스 실(30)이 실린더 블록(10)의 길이 방향으로 길게 형성된다. 그리고 밸런스 실(30)에는 엔진 구동에 따른 진동을 상쇄시키기 위한 좌?우 한 쌍의 밸런스 축(40)이 설치된다.2 to 3, the cylinder block 10 according to the present embodiment has a structure in which the cylinder bore 20 for installing the piston is formed in series. A pair of left and right balance seals 30 is formed in the cylinder block 10 on both sides of the cylinder bore 20 in the longitudinal direction of the cylinder block 10. The balance chamber 30 is provided with a pair of left and right balance shafts 40 for canceling the vibration caused by the engine driving.

실린더 보어(20) 양 옆에 좌?우 한 쌍으로 형성된 밸런스 실(30) 중, 우측 밸런스 실(30) 직상방에는 캠실(50)이 형성된다. 캠실(50)에는 피스톤 운동 시 흡?배기 제어에 관여하는 캠축(60)이 상기 우측 밸런스 축과 평행하게 설치되며, 캠실(50)에 설치되는 캠축(60)의 캠면 위치에 대응하여 복수의 태핏홀(70)이 상기 캠실(50)과 수직으로 연통 형성된다.The cam chamber 50 is formed directly above the right balance chamber 30 among the balance chambers 30 formed in the left-right pair by the cylinder bore 20 both sides. In the cam chamber 50, a cam shaft 60, which is involved in intake and exhaust control during piston movement, is installed in parallel with the right balance shaft, and a plurality of states corresponding to the cam surface position of the cam shaft 60 provided in the cam chamber 50 are provided. A pit hole 70 is formed in communication with the cam chamber 50 vertically.

태핏홀(70) 내에는 피스톤의 흡?배기 제어를 위한 밸브개폐에 관여하는 태핏(80)이 설치될 수 있다. 이러한 태핏(80)의 하단은 상기 캠실(50)에 설치되는 캠축(60)의 캠면(부호 생략)과 기구적으로 접속하며, 따라서 캠축(60) 회전에 의해 태핏홀(70) 내에서 승강 이동하면서 밸브의 개폐를 단속한다. 이때 태핏홀(70) 내에는 태핏(80)의 원활한 승강운동을 위해 오일이 지속적으로 공급된다. The tappet 80 may be installed in the tappet hole 70 to engage in valve opening and closing for controlling the intake and exhaust of the piston. The lower end of the tappet 80 is mechanically connected to the cam surface (not shown) of the cam shaft 60 installed in the cam chamber 50, and thus is moved up and down in the tappet hole 70 by the cam shaft 60 rotation. While opening and closing the valve. At this time, oil is continuously supplied in the tappet hole 70 for a smooth lifting movement of the tappet 80.

위와 같은 태핏의 윤활을 위해, 상기 태핏홀(70)에는 태핏홀(70) 사이로 일정 간격으로 형성된 연결통로(82)를 통해 오일이 제공된다. 연결통로(82)는 실린더 블록(10) 상측에 결합되는 실린더 헤드(미도시)에 형성된 오일경로 출구(미도시)에 연통된다. 따라서 실린더 헤드에서 상기 연결통로(82)를 거쳐 태핏홀(70)로 제공된 오일은, 태핏에 대한 윤활작용 후 상기 캠실(50) 측으로 흘러 들어가게 된다.For lubrication of the tappet as described above, the tappet hole 70 is provided with oil through a connection passage 82 formed at regular intervals between the tappet holes 70. The connection passage 82 communicates with an oil path outlet (not shown) formed in a cylinder head (not shown) coupled to the upper side of the cylinder block 10. Therefore, the oil provided to the tappet hole 70 through the connecting passage 82 in the cylinder head flows into the cam chamber 50 after lubrication for the tappet.

실린더 블록(10) 전방 측에는, 오일 팬(미도시)에 저장된 오일이 상기 캠축(60) 및 밸런스 축(40)으로 제공될 수 있도록 오일경로 즉, 유로(미도시)가 형성되어 있다. 또한 상기 유로에서 제공되는 오일이 실린더 블록(10)과 접속되는 특정 위치(저널)까지 공급될 수 있도록, 상기 밸런스 축(40)과 캠축(60) 중앙에는 그 길이방향으로 중앙통로(42)(62)가 형성되어 있다(후술되는 도 4참조).On the front side of the cylinder block 10, an oil path, that is, a flow path (not shown), is formed so that oil stored in an oil pan (not shown) can be provided to the cam shaft 60 and the balance shaft 40. In addition, the central passage 42 in the longitudinal direction of the center of the balance shaft 40 and the cam shaft 60 so that the oil provided from the flow path can be supplied to a specific position (journal) connected to the cylinder block 10. 62) (see FIG. 4 described later).

캠축(60) 저널의 윤활을 위해 캠축(60)의 중앙통로(62) 제공된 오일은 캠축(60)의 해당 저널이 회전 가능하게 접속하는 접속부(부호 생략) 사이로 공급되며, 윤활작용 후 해당 오일은 저널에 형성된 통공을 거쳐 상기한 캠실(50)로 흘러 나온다. 따라서 상기 캠실(50)에는 위와 같이, 태핏홀(70)에서 흘러내린 오일과 캠축(60) 윤활을 위해 제공되었던 오일이 존재하게 된다.The oil provided in the central passage 62 of the camshaft 60 for lubrication of the camshaft 60 journal is supplied between the connections (not shown) to which the journal of the camshaft 60 is rotatably connected, and after lubrication, the oil is supplied. The cam chamber 50 flows through the through hole formed in the journal. Therefore, in the cam chamber 50, the oil flowed from the tappet hole 70 and the oil provided for lubrication of the camshaft 60 are present as described above.

도면에는 도시되지 않았으나, 밸런스 축(40)에도 상기한 캠축(60)과 동일한 방법으로 오일이 공급되며, 밸런스 축(40) 윤활을 행한 오일은 저널과 접속하는 해당 부시의 통공을 거쳐 상기한 밸런스 실(30)로 흘러 나온다. 이때 상기 밸런스 실(30)과 캠실(50)에 존재하는 오일은 각각 다른 경로를 통해 오일 팬으로 리턴될 수 있다. 이에 대해 도 4를 참조하여 살펴보기로 한다.Although not shown in the drawing, oil is supplied to the balance shaft 40 in the same manner as the cam shaft 60, and the oil lubricated in the balance shaft 40 passes through the through holes of the bushes connected to the journals. Flow out into the thread (30). At this time, the oil present in the balance chamber 30 and the cam chamber 50 may be returned to the oil pan through different paths. This will be described with reference to FIG. 4.

도 4는 도 3에 나타난 실린더 블록(10)을 A-A선 방향에서 바라본 단면도이다.4 is a cross-sectional view of the cylinder block 10 shown in FIG. 3 as viewed from the A-A line direction.

도 3 내지 도 4를 참조하면, 본 실시예에서 상기 캠실(50)과 밸런스 실(30)은 격벽(90)을 매개로 상호 분리 구획된다. 또한 캠실(50)은 오일드레인관(100)을 매개로 본 실시에에 따른 실린더 블록(10) 하방에 장치되는 오일 팬(미도시)과 연결된다. 즉, 오일드레인관(100)의 입구(102)는 상기 격벽(90) 일측에 형성되며, 이러한 오일드레인관(100)은 오일 팬이 위치하게 되는 실린더 블록(10) 저면부로 연장 형성된다.3 to 4, in the present embodiment, the cam chamber 50 and the balance chamber 30 are separated from each other via the partition wall 90. In addition, the cam chamber 50 is connected to an oil pan (not shown) installed below the cylinder block 10 according to the present embodiment through the oil drain pipe 100. That is, the inlet 102 of the oil drain pipe 100 is formed on one side of the partition wall 90, and the oil drain pipe 100 extends to the bottom surface of the cylinder block 10 where the oil pan is located.

이에 따라, 앞서 살펴본 도 1의 종래기술과는 다르게, 태핏홀(70)과 캠축(60)으로부터 흘러 나와 캠실(50)에 모인 오일은, 그 하방의 밸런스 실(30)을 경유하지 않고도 입구(102)를 통해 상기 오일드레인관(100)으로 흘러 들어가 오일 팬 측으로 다이렉트(direct)로 드레인될 수 있다. 따라서 캠실(50)로부터 낙하된 오일이 밸런스 축(40)과 충돌하여 발생하는 연무(煙霧)현상은 전혀 발생하지 않는다.Accordingly, unlike the prior art of FIG. 1 described above, the oil flowing out from the tappet hole 70 and the cam shaft 60 and collected in the cam chamber 50 can be discharged without passing through the lower balance chamber 30. The oil may flow into the oil drain pipe 100 through the drain pipe 102 and be drained directly to the oil pan. Therefore, no mist phenomenon that occurs when the oil dropped from the cam chamber 50 collides with the balance shaft 40 does not occur at all.

오일이 오일드레인관(100)의 상기 입구(102) 측으로 용이하게 흘러 들어 갈 수 있도록, 상기 격벽(90) 상면은 오일드레인관(100)의 입구(102)를 향해 하향 경사진 구성일 수 있다. 그리고 상기 오일드레인관(100) 중간에는 터보차져로부터 연장된 드레인관(100)이 연결되는 케넥팅 홀(110)이 형성될 수 있다. 따라서 터보차져로부터 흘러 나온 오일도 상기 오일드레인관(100)을 통해 오일 팬으로 드레인될 수 있다. The upper surface of the partition wall 90 may be configured to be inclined downward toward the inlet 102 of the oil drain tube 100 so that oil may easily flow into the inlet 102 side of the oil drain tube 100. . In addition, a connecting hole 110 connected to the drain pipe 100 extending from the turbocharger may be formed in the middle of the oil drain pipe 100. Therefore, oil flowing out of the turbocharger may be drained to the oil pan through the oil drain pipe 100.

도 5는 도 3에 나타난 실린더 블록(10)을 B-B선 방향에서 바라본 단면도이다.FIG. 5 is a cross-sectional view of the cylinder block 10 shown in FIG. 3 viewed in the direction B-B.

도 3 및 도 5의 도시와 같이, 본 실시예에 따른 실린더 블록(10)의 상기 격벽(90) 일측에는 통기홀(92)이 형성될 수 있다. 구체적으로 상기 통기홀(92)은, 직렬로 형성되는 복수의 실린더 보어(20) 중 최후방의 실린더 보어(20)와 대응되는 위치의 격벽(90)에 형성될 수 있으며, 통기홀(92) 형성위치에 대응하는 밸런스 실(30) 말단 하부에는 밸런스 실(30)로부터 도시되지 않는 크랭크 실로 연결되는 유로(120)가 형성되어 있다.3 and 5, a vent hole 92 may be formed at one side of the partition wall 90 of the cylinder block 10 according to the present embodiment. Specifically, the vent hole 92 may be formed in the partition wall 90 at a position corresponding to the rearmost cylinder bore 20 of the plurality of cylinder bores 20 formed in series, and the vent hole 92 is formed. The flow path 120 is connected to the crank chamber (not shown) from the balance chamber 30 at the lower end of the balance chamber 30 corresponding to the position.

따라서 캠축(60) 말단부 및 이에 대응하는 위치의 태핏홀(70)에서 흘러 나온 소량의 오일은 상기 통기홀(92)을 거쳐 밸런스 실(30) 측으로 유입되고, 밸런스 축(40) 말단부에서 흘러나온 오일과 합류하여 상기 유로(120)를 거쳐 크랭크 실로 도입될 수 있다. 또한 통기홀(92) 및 상기 유로(120)의 형성으로 인해 캠실(50)과 밸런스 실(30)은 물론, 실린버 블록 상면부와 크랭크 실은 상호 공기가 순환 가능하게 연통될 수 있다. Therefore, a small amount of oil flowing out of the end of the camshaft 60 and the tappet hole 70 at the corresponding position flows into the balance seal 30 through the vent hole 92 and flows out of the end of the balance shaft 40. Joined with oil may be introduced into the crank seal via the flow path 120. In addition, due to the formation of the vent hole 92 and the flow path 120, the cam chamber 50 and the balance chamber 30, as well as the upper surface portion of the cylinder block and the crank seal may communicate with each other so that air can be circulated.

통기홀(92)의 형성으로 밸런스 실(30), 캠실(50), 실린더 블록(10) 상면 및 크랭크 실이 상호 공기가 통과 가능하도록 연통되면, 실린더 블록(10) 내부에 분리 구획된 상기 공간들 내부의 압력이 일정한 압으로 유지될 수 있게 됨으로써, 공간 밀폐에 따른 공기압 상승으로 인한 오일의 역류나 구동효율 저하와 같은 문제를 해소할 수 있다.When the balance chamber 30, the cam chamber 50, the upper surface of the cylinder block 10, and the crank chamber communicate with each other to allow air to pass through the formation of the vent hole 92, the space separated and partitioned inside the cylinder block 10. Since the pressure inside the field can be maintained at a constant pressure, it is possible to solve problems such as backflow of oil or deterioration of driving efficiency due to air pressure rise due to space sealing.

이상에서 살펴본 본 발명의 실시예에 의한 직렬 다기통 엔진의 실린더 블록에 따르면, 밸러스 축이 회전 가능하게 설치되는 밸런스 실과 캠축 설치를 위한 캠실이 격벽을 통해 상호 분리 구획됨으로써, 종래와 같이 캠실로부터 낙하된 오일이 밸런스 축과 충돌하여 발생하는 연무(煙霧)현상을 방지할 수 있는 장점이 있다.According to the cylinder block of the in-line multi-cylinder engine according to the embodiment of the present invention described above, the balance chamber and the cam chamber for cam shaft installation are installed so that the balance shaft is rotatably separated from each other through the partition wall, and thus, from the cam chamber as in the prior art. There is an advantage that can prevent the mist caused by the falling oil collides with the balance shaft.

또한, 통기홀을 통해 밸런스 실과 캠실은 물론, 실린더 블록 상면과 크랭크 실이 공기가 통과 가능하도록 상호 연통됨으로써, 실린더 블록 내부에 구획된 공간은 일정한 공기압으로 유지될 수 있으며, 따라서 공간 밀폐에 따른 공기압 상승으로 인한 오일의 역류나 구동효율 저하와 같은 문제를 해소할 수 있는 엔진을 구현할 수 있게 된다. In addition, the balance chamber and the cam chamber, as well as the cylinder block upper surface and the crank seal communicate with each other to allow air to pass through the ventilation holes, so that the space partitioned inside the cylinder block can be maintained at a constant air pressure, and thus the air pressure due to space sealing. It is possible to implement an engine that can solve problems such as backflow of oil and deterioration of driving efficiency due to the rise.

이상의 본 발명의 상세한 설명에서는 그에 따른 특별한 실시 예에 대해서만 기술하였다. 하지만 본 발명은 상세한 설명에서 언급되는 특별한 형태로 한정되는 것이 아닌 것으로 이해되어야 하며, 오히려 첨부된 청구범위에 의해 정의되는 본 발명의 정신과 범위 내에 있는 모든 변형물과 균등물 및 대체물을 포함하는 것으로 이해되어야 한다.
In the foregoing detailed description of the present invention, only specific embodiments thereof have been described. It is to be understood, however, that the present invention is not limited to the specific forms referred to in the description, but rather includes all modifications, equivalents, and substitutions within the spirit and scope of the invention as defined by the appended claims. Should be.

10 : 실린더 블록 20 : 실린더 보어
30 : 밸런스 실 40 : 밸런스 축
50 : 캠실 60 : 캠축
70 : 태핏홀 80 : 태핏
90 : 격벽 92 : 통기홀
100 : 오일드레인관 102 : 오일드레인관 입구
110 : 커넥팅 홀
10: cylinder block 20: cylinder bore
30: balance seal 40: balance axis
50: cam chamber 60: camshaft
70: tappet hole 80: tappet
90: bulkhead 92: vent hole
100: oil drain pipe 102: oil drain pipe inlet
110: connecting hole

Claims (5)

실린더 보어 양 옆에 한 쌍의 밸런스 축이 회전 가능하게 장치되는 좌?우 한 쌍의 밸런스 실이 실린더 블록의 길이 방향으로 길게 형성되며;
상기 좌?우 한 쌍의 밸런스 실 중, 우측 밸런스 실 직상방에는 실린더 블록 내에서 상기 밸런스 축과 평행하게 이격 배치되는 캠축 설치를 위한 캠실이 형성되고;
상기 캠실에 설치되는 캠축의 캠면 위치에 대응하여 태핏 설치를 위한 복수의 태핏홀이 상기 캠실과 수직으로 연통 형성되며;
상기 캠실과 밸런스 실은 격벽을 통해 상호 분리 구획되는 구성을 갖고;
캠축에 대한 윤활작용 후 상기 격벽 상면으로 드레인된 오일이 오일 팬으로 리턴될 수 있도록, 상기 격벽 일측에 입구를 형성한 오일드레인관이 상기 격벽으로부터 실린더 블록 저면부로 연장 형성됨을 특징으로 하는 직렬 다기통 엔진의 실린더 블록.
A pair of left and right balance seals in which a pair of balance shafts are rotatably mounted on both sides of the cylinder bore is formed long in the longitudinal direction of the cylinder block;
Among the left and right pairs of balance chambers, a cam chamber for cam shaft installation, which is spaced in parallel with the balance shaft in a cylinder block, is formed directly above the right balance chamber;
A plurality of tappet holes for tappet installation are formed in communication with the cam chamber vertically corresponding to the cam surface position of the cam shaft installed in the cam chamber;
The cam chamber and the balance chamber have a configuration in which the cam chamber and the balance chamber are separated from each other through a partition wall;
An oil drain tube having an inlet formed on one side of the partition wall extends from the partition wall to the bottom of the cylinder block so that oil drained to the upper surface of the partition wall after lubrication of the camshaft can be returned to the oil pan. Cylinder block of the engine.
제 1 항에 있어서,
상기 캠실과 밸런스 실 사이의 일정 공기압 유지를 위한 통기홀이 상기 격벽 일측에 형성되는 것을 특징으로 하는 직렬 다기통 엔진의 실린더 블록.
The method of claim 1,
Ventilation hole for maintaining a constant air pressure between the cam chamber and the balance chamber is formed in one side of the partition wall cylinder block of the multi-cylinder engine.
제 2 항에 있어서,
상기 통기홀은 직렬로 형성되는 복수의 실린더 보어 중 최후방의 실린더 보어와 대응되는 위치의 격벽에 형성되는 것을 특징으로 하는 직렬 다기통 엔진의 실린더 블록.
The method of claim 2,
The vent hole is a cylinder block of a series multi-cylinder engine, characterized in that formed in the partition wall corresponding to the rearmost cylinder bore of the plurality of cylinder bores formed in series.
제 1 항에 있어서,
상기 격벽 상면은 상기 오일드레인관 입구 측을 향해 하향 경사지게 형성된 구성인 것을 특징으로 하는 직렬 다기통 엔진의 실린더 블록.
The method of claim 1,
The partition wall upper surface is a cylinder block of the in-line multi-cylinder engine, characterized in that formed inclined downward toward the oil drain pipe inlet side.
제 1 항에 있어서,
상기 오일드레인관 중간에는 터보차져로부터 연장된 드레인관이 연결될 수 있는 커넥팅 홀이 더 형성되는 것을 특징으로 하는 직렬 다기통 엔진의 실린더 블록.
The method of claim 1,
The middle of the oil drain pipe cylinder block of a series multi-cylinder engine, characterized in that the connection hole is further formed to connect the drain pipe extending from the turbocharger.
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