WO2022114303A1 - Engine with oil separator-integrated cylinder head - Google Patents

Engine with oil separator-integrated cylinder head Download PDF

Info

Publication number
WO2022114303A1
WO2022114303A1 PCT/KR2020/017174 KR2020017174W WO2022114303A1 WO 2022114303 A1 WO2022114303 A1 WO 2022114303A1 KR 2020017174 W KR2020017174 W KR 2020017174W WO 2022114303 A1 WO2022114303 A1 WO 2022114303A1
Authority
WO
WIPO (PCT)
Prior art keywords
oil
blow
gas
cylinder head
cylinder
Prior art date
Application number
PCT/KR2020/017174
Other languages
French (fr)
Korean (ko)
Inventor
한명훈
Original Assignee
주식회사 블루플래닛
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 블루플래닛 filed Critical 주식회사 블루플래닛
Publication of WO2022114303A1 publication Critical patent/WO2022114303A1/en

Links

Images

Classifications

    • 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
    • F01M13/00—Crankcase ventilating or breathing
    • F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
    • F01M13/0416—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil arranged in valve-covers
    • 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
    • F01M13/00—Crankcase ventilating or breathing
    • F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/24—Cylinder heads
    • 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
    • F01M13/00—Crankcase ventilating or breathing
    • F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
    • F01M2013/0433—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil with a deflection device, e.g. screen

Definitions

  • the present disclosure (disclosure) relates to a cylinder head structure that reduces oil consumption by separating oil from blow-by gas of an engine. It relates primarily to an oil separator-integrated cylinder head structure that separates oil.
  • the exhaust gas of a vehicle is classified according to the emission source, the exhaust gas discharged through the exhaust system after a mixture of fuel and air is combusted in the cylinder, the boil-off gas generated by evaporating the fuel in the fuel tank, and the combustion chamber It can be divided into the blow-by gas that flows out of the mixer or unburned gas into the crank chamber.
  • the blow-by gas refers to the gas that escapes from the combustion chamber to the crank chamber through the gap between the cylinder and the piston during the compression and expansion strokes, which is a passage formed in the cylinder block and the cylinder head after exiting from the combustion chamber into the crank chamber. , pass through the head cover in turn.
  • blow-by gas increases the internal pressure of the engine and adversely affects the engine sealing, it is necessary to discharge the blow-by gas to the outside of the engine to prevent the pressure increase inside the engine in order to control the pressure. It is a ventilation system.
  • a portion of the combustion gas generated in the combustion process of the engine is configured to recirculate the blow-by gas leaked into the crankcase to the intake system of the engine.
  • the blow-by gas moves upward along the passage formed in the cylinder block 11 in the crankcase as shown in FIG. 1 , passes through the cylinder head 12 and the head cover 13 in sequence, and is then absorbed It is recirculated to the machine, and since the blow-by gas moving to the cylinder head 12 contains a significant amount of scattering and atomizing oil, it is necessary to separate the oil as much as possible before the blow-by gas is re-introduced into the intake system.
  • the head cover 13 a part of oil with large particles is first separated and discharged from the baffle room 20 provided on one side, and then the blow-by gas passes through the oil separation unit 18 to secondarily separate the oil. It is then recirculated to the intake system.
  • the oil separated by the oil separator 18 is returned to the oil pan 19 at the bottom of the engine, and the blow-by gas from which the oil is separated by the oil separator 18 is introduced through the air cleaner 14 . It is combined with the new air and is finally supplied into the combustion chamber 17 through the surge tank 15 and the intake manifold 16 .
  • baffle plate 21 dividing the space on one side is installed in the head cover 13 .
  • the space partitioned by the baffle plate 21 becomes the baffle room 20, and the blow-by gas flows into the baffle room 20 through the inlet 22 of the baffle plate 21. It is sent to the oil separation unit 18 through the primary oil separation process.
  • the baffle room 20 in the head cover 13 and the baffle plate 21 forming the same separate the oil droplets drawn by the blow-by gas, and then discharge them to the outside of the baffle room 20 through an appropriate discharge mechanism to release the gas as much as possible. It should be designed to pass only through, and the oil drain mechanism 23 is usually installed on the baffle plate 21 .
  • the oil discharge mechanism 23 has a structure in which the oil separated from the blow-by gas is discharged by its own weight.
  • An object of the present disclosure is to provide a more reliable oil separation by integrally forming an oil separator of an auxiliary means for primarily separating oil in a cylinder head as a supplement to the problems of the prior art.
  • the present disclosure provides a cylinder block, a cylinder head and a piston that are coupled to each other to form a combustion chamber therein, an oil pan coupled to the cylinder block to form a crankcase therein, and the cylinder
  • An engine having an oil separator-integrated cylinder head including a head cover coupled to a head and forming a baffle room therein, and a chain cover coupled to the oil pan and the head cover to form a space between the oil pan and the head cover to provide.
  • An oil separator for separating oil from the blow-by gas leaked from the combustion chamber to the crank chamber may be integrally formed in the cylinder head.
  • the oil separator includes a body forming an oil separation chamber therein, and a partition wall formed in the oil separation chamber to separate the oil from the blow-by gas, wherein the body is formed to communicate with the space a blow-by gas inlet through which the blow-by gas is introduced, an oil outlet formed to discharge the oil separated from the blow-by gas and communicate with the space;
  • a blow-by gas outlet may be formed that is configured to communicate with the baffle room.
  • FIG. 1 is a view schematically showing the structure of a conventional head cover for oil separation.
  • FIG. 2 is a diagram schematically showing an exterior of an engine including an oil separator according to embodiments of the present disclosure
  • FIG. 3 is a view schematically showing an external appearance of a cylinder head including the oil separator of FIG. 2 .
  • FIG. 4 is a cross-sectional view schematically illustrating the structure of the oil separator of FIG. 2 .
  • FIG. 5 is a cross-sectional view schematically illustrating the structure of the oil separator of FIG. 2 .
  • FIG. 2 is a view schematically showing an external appearance of an engine having an oil separator according to embodiments of the present disclosure
  • FIG. 3 is a diagram schematically showing an external appearance of a cylinder head having an oil separator of FIG. 2
  • FIG. 4 is a cross-sectional view schematically showing the structure of the oil separator of FIG. 2
  • FIG. 5 is a cross-sectional view schematically illustrating the structure of the oil separator of FIG. 2 .
  • the oil separator of the present disclosure may be integrally formed with a cylinder head 200 of an engine for a vehicle, and the engine includes a cylinder block 100, a cylinder head 200, a head cover 300, a chain cover ( 500) and an oil pan (not shown).
  • the cylinder block 100 , the cylinder head 200 and the piston may form a combustion chamber therein.
  • the oil pan may be coupled to the cylinder block 100 to form a crankcase therein.
  • the head cover 300 may be coupled to the cylinder head 200 and form a baffle room 311 therein.
  • the chain cover 500 may be coupled to the oil pan and the head cover 300 to form a space between the cylinder block 100 and the cylinder head 200 .
  • the cylinder block 100 may form a cylinder therein.
  • the piston makes a reciprocating motion within the cylinder while in close contact with the inner wall of the cylinder.
  • the blow-by gas may leak into the crank chamber under the cylinder block 100 through the gap between the inner wall of the cylinder and the piston.
  • a part of the blue-bye gas leaked into the crankcase is introduced into the baffle room 311 formed in the head cover 300 through a passage (not shown) formed in the cylinder block 100 .
  • another part of the blue-bye gas flows through the space between the chain cover 500 and the cylinder block 100 and the cylinder head 200 , and a part of it flows into the baffle room 311 formed in the head cover 300 .
  • the remainder flows through the oil separator of the present disclosure, and then flows into the baffle room 311 formed in the head cover 300 .
  • the oil recovery rate can be improved by simply integrating the oil separator in the cylinder head 200 without changing the conventional oil recovery structure. Therefore, while having compatibility with the existing blow-by gas ventilation structure, it is possible to overcome the spatial limitation and dramatically improve the oil recovery rate.
  • An oil separator that separates oil from the blow-by gas may be integrally formed in the cylinder head 200 .
  • the oil separator may include a body 201 forming an oil separation chamber therein, and a partition wall 221 formed in the oil separation chamber to separate oil from the blow-by gas.
  • the oil separator may include an oil separator cover 241 coupled to the body 201 so that the oil separation chamber is partitioned independently from the outside.
  • a blow-by gas inlet 211 , an oil outlet 231 , and a blow-by gas outlet 213 may be formed in the body 201 .
  • the blow-by gas may be introduced into the oil separation chamber through the blow-by gas inlet 211 .
  • the blow-by gas inlet 211 may be formed to communicate with the space formed by the chain cover 500 .
  • the partition wall 221 may be formed in the oil separator to separate oil from the blow-by gas.
  • the oil separated from the blow-by gas may be discharged through the oil outlet 231 .
  • the oil outlet 231 may be formed to communicate with the space.
  • the blow-by gas may be discharged through the blow-by gas outlet 213 .
  • the blow-by gas outlet 213 may be formed to communicate with the baffle room 311 .
  • the oil is separated through the partition wall 221 structure, and the separated oil is separated from the oil outlet 231 and the chain cover 500 and It is recovered into the oil pan again through the space between the cylinder head 200 and the cylinder block 100 sequentially.
  • the blow-by gas from which some oil is separated may move to the baffle room 311 in the head cover 300 through the outlet 213 to additionally recover oil.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)

Abstract

An engine with an oil separator-integrated cylinder head may comprise: a cylinder block, a cylinder head, and a piston which are coupled to each other to form a combustion chamber therein; an oil pan coupled to the cylinder blocks to form a crankcase therein; a head cover coupled to the cylinder head and forming a baffle room therein; and a chain cover coupled to the oil pan and the head cover to form a space between the oil pan and the cylinder head. An oil separator for separating oil from a blow-by gas leaked from the combustion chamber to the crankcase may be integrally formed in the cylinder head. The oil separator includes: a body forming an oil separation chamber therein; and a partition wall formed in the oil separation chamber to separate the oil from the blow-by gas, wherein the body may be provided with: a blow-by gas inlet configured to communicate with the space and through which the blow-by gas is introduced; an oil outlet through which the oil separated from the blow-by gas is discharged and communicated with the space; and a blow-by gas outlet configured to discharge the blow-by gas and communicate with the baffle room.

Description

오일 세러레이터 일체형 실린더 헤드를 갖는 엔진Engine with oil seperator integrated cylinder head
본 개시물(disclosure)은 엔진의 블로바이 가스에서 오일을 분리하여 오일 소모량을 줄이는 실린더 헤드 구조에 관한 것으로서, 엔진 실린더 헤드의 일부에 블로바이 가스의 오일을 분리하기 위한 격벽을 설치하여 실린더 헤드에서 1차적으로 오일을 분리 시켜주는 오일 세퍼레이터 일체형 실린더 헤드 구조에 관한 것이다.The present disclosure (disclosure) relates to a cylinder head structure that reduces oil consumption by separating oil from blow-by gas of an engine. It relates primarily to an oil separator-integrated cylinder head structure that separates oil.
도 1은 오일 분리를 위한 종래의 헤드 커버(등록특허 제10-0783888호)의 구조를 개략적으로 보여주는 도면이다.1 is a diagram schematically showing the structure of a conventional head cover for oil separation (Registration Patent No. 10-0783888).
일반적으로, 자동차의 배출가스를 배출원에 따라 구분하여 보면, 연료와 공기의 혼합기가 실린더 내에서 연소된 후 배기계를 통해 배출되는 배기가스와, 연료탱크 내 연료가 증발하여 발생되는 증발가스와, 연소실의 혼합기나 미연소가스가 크랭크실로 유출되는 블로바이 가스로 나눌 수 있다.In general, if the exhaust gas of a vehicle is classified according to the emission source, the exhaust gas discharged through the exhaust system after a mixture of fuel and air is combusted in the cylinder, the boil-off gas generated by evaporating the fuel in the fuel tank, and the combustion chamber It can be divided into the blow-by gas that flows out of the mixer or unburned gas into the crank chamber.
여기서, 블로바이 가스(blow-by gas)는 압축행정과 팽창행정 동안 실린더와 피스톤의 간극을 통하여 연소실로부터 크랭크실로 빠져나온 가스를 말하며, 이는 연소실로부터 크랭크실로 빠져나온 뒤 실린더 블록 내에 형성된 통로와 실린더 헤드, 헤드 커버를 차례로 통과한다.Here, the blow-by gas refers to the gas that escapes from the combustion chamber to the crank chamber through the gap between the cylinder and the piston during the compression and expansion strokes, which is a passage formed in the cylinder block and the cylinder head after exiting from the combustion chamber into the crank chamber. , pass through the head cover in turn.
블로바이 가스는 엔진 내부 압력을 상승시켜 엔진 실링(sealing)에 악영향을 미치게 되므로, 압력 조절을 위해서는 블로바이 가스를 엔진 외부로 방출하여 엔진 내부의 압력 상승을 방지하여야 하는데, 이러한 역할을 하는 것이 바로 벤틸레이션 시스템(ventilation system)이다.Since the blow-by gas increases the internal pressure of the engine and adversely affects the engine sealing, it is necessary to discharge the blow-by gas to the outside of the engine to prevent the pressure increase inside the engine in order to control the pressure. It is a ventilation system.
통상의 벤틸레이션 시스템에서는 엔진의 연소과정에서 생성된 연소가스의 일부가 크랭크실로 누설된 블로바이 가스를 엔진의 흡기계로 재순환시키도록 구성된다.In a typical ventilation system, a portion of the combustion gas generated in the combustion process of the engine is configured to recirculate the blow-by gas leaked into the crankcase to the intake system of the engine.
즉, 벤틸레이션 시스템에서 블로바이 가스는 도 1에 도시된 바와 같이 크랭크실에서 실린더 블록(11) 내에 형성된 통로를 따라 상측으로 이동하여 실린더 헤드(12) 및 헤드 커버(13)를 차례로 거친 뒤 흡기계로 재순환되게 되는데, 실린더 헤드(12)로 이동하는 블로바이 가스는 상당 양의 비산, 무화 오일을 함유하므로, 블로바이 가스가 흡기계로 재유입되기 전에 최대한 오일을 분리시켜야 한다.That is, in the ventilation system, the blow-by gas moves upward along the passage formed in the cylinder block 11 in the crankcase as shown in FIG. 1 , passes through the cylinder head 12 and the head cover 13 in sequence, and is then absorbed It is recirculated to the machine, and since the blow-by gas moving to the cylinder head 12 contains a significant amount of scattering and atomizing oil, it is necessary to separate the oil as much as possible before the blow-by gas is re-introduced into the intake system.
이를 위해 헤드 커버(13) 내에서는 일측에 마련된 배플 룸(20)에서 입자가 큰 오일 일부가 1차로 분리되어 배출되며, 이후 블로바이 가스는 오일 분리부(18)를 거치면서 2차로 오일을 분리시킨 뒤 흡기계로 재순환되게 된다.To this end, in the head cover 13, a part of oil with large particles is first separated and discharged from the baffle room 20 provided on one side, and then the blow-by gas passes through the oil separation unit 18 to secondarily separate the oil. It is then recirculated to the intake system.
여기서, 오일 분리부(18)에 의해 분리된 오일은 엔진 하단의 오일 팬(19)으로 리턴되며, 오일 분리부(18)에 의해 오일이 분리된 블로바이 가스는 에어클리너(14)를 통해 유입되는 신기와 합쳐져서 서지탱크(15) 및 흡기 매니폴드(16)를 거쳐 최종적으로 연소실(17) 내로 공급되게 된다.Here, the oil separated by the oil separator 18 is returned to the oil pan 19 at the bottom of the engine, and the blow-by gas from which the oil is separated by the oil separator 18 is introduced through the air cleaner 14 . It is combined with the new air and is finally supplied into the combustion chamber 17 through the surge tank 15 and the intake manifold 16 .
한편, 헤드 커버(13) 내 일측에 설치되어 블로바이 가스가 통과하는 동안 오일이 1차로 분리되는 배플 룸(20)은 헤드 커버(13) 내에 그 일측 공간을 구획하는 배플 플레이트(21)를 설치함으로써 마련되는데, 이 배플 플레이트(21)가 구획하는 공간이 배플 룸(20)이 되며, 블로바이 가스는 배플 플레이트(21)의 입구부(22)를 통해 배플 룸(20) 내부로 유입된 후 1차 오일 분리 과정을 거쳐 오일 분리부(18)로 보내지게 된다.On the other hand, in the baffle room 20 installed on one side of the head cover 13 and in which oil is primarily separated while the blow-by gas passes, a baffle plate 21 dividing the space on one side is installed in the head cover 13 . The space partitioned by the baffle plate 21 becomes the baffle room 20, and the blow-by gas flows into the baffle room 20 through the inlet 22 of the baffle plate 21. It is sent to the oil separation unit 18 through the primary oil separation process.
헤드 커버(13) 내 배플 룸(20) 및 이를 형성하는 배플 플레이트(21)는 블로바이 가스가 끌고 들어오는 오일 액적을 분리한 뒤 이를 적절한 배출기구를 통해 배플 룸(20) 외부로 배출시켜 가급적 가스만 통과하도록 설계되어야 하며, 보통 배플 플레이트(21)에는 오일 배출기구(23)가 설치된다.The baffle room 20 in the head cover 13 and the baffle plate 21 forming the same separate the oil droplets drawn by the blow-by gas, and then discharge them to the outside of the baffle room 20 through an appropriate discharge mechanism to release the gas as much as possible. It should be designed to pass only through, and the oil drain mechanism 23 is usually installed on the baffle plate 21 .
오일 배출기구(23)는 블로바이 가스로부터 분리된 오일이 자중에 의하여 배출되는 구조로 되어 있다.The oil discharge mechanism 23 has a structure in which the oil separated from the blow-by gas is discharged by its own weight.
그러나, 이러한 종래의 구조는 아무리 구조물을 복잡하게 설치하더라도 블로바이 가스 중 큰 입자의 오일만을 거르거나, 블로바이 가스 유로가 복잡함에 따른 유동손실에 의해 크랭크실 내 압력이 과도하게 올라갈 염려가 있다.However, in this conventional structure, no matter how complicated the structure is, there is a fear that only large particles of oil are filtered out of the blow-by gas, or the pressure in the crankcase is excessively increased due to flow loss due to the complexity of the blow-by gas flow path.
본 개시물은 종래 기술의 문제점에서 더 보완된 것으로서 실린더 헤드에 일차적으로 오일을 분리하는 보조수단의 오일 세퍼레이터를 일체로 형성하여 보다 확실한 오일 분리를 제공하는데 그 목적이 있다.An object of the present disclosure is to provide a more reliable oil separation by integrally forming an oil separator of an auxiliary means for primarily separating oil in a cylinder head as a supplement to the problems of the prior art.
상기한 목적을 달성하기 위하여, 본 개시물은, 상호 결합되어 내부에 연소실을 형성하는 실린더 블록, 실린더 헤드 및 피스톤과, 상기 실린더 블록과 결합되어 내부에 크랭크실을 형성하는 오일 팬과, 상기 실린더 헤드와 결합되고 내부에 배플 룸을 형성하는 헤드 커버와, 상기 오일 팬 및 상기 헤드 커버와 결합되어 상기 실린더 헤드와의 사이에 공간을 형성하는 체인 커버를 포함하는 오일 세퍼레이터 일체형 실린더 헤드를 갖는 엔진을 제공한다. In order to achieve the above object, the present disclosure provides a cylinder block, a cylinder head and a piston that are coupled to each other to form a combustion chamber therein, an oil pan coupled to the cylinder block to form a crankcase therein, and the cylinder An engine having an oil separator-integrated cylinder head including a head cover coupled to a head and forming a baffle room therein, and a chain cover coupled to the oil pan and the head cover to form a space between the oil pan and the head cover to provide.
상기 실린더 헤드에는, 상기 연소실로부터 상기 크랭크실로 누설된 블로바이 가스로부터 오일을 분리하는 오일 세퍼레이터가 일체화되어 형성될 수 있다. An oil separator for separating oil from the blow-by gas leaked from the combustion chamber to the crank chamber may be integrally formed in the cylinder head.
상기 오일 세러페이터는, 내부에 오일 분리실을 형성하는 바디와, 상기 블로바이 가스로부터 상기 오일을 분리하기 위하여 상기 오일 분리실 내에 형성되는 격벽을 포함하고, 상기 바디에는, 상기 공간과 소통되도록 형성되고, 상기 블로바이 가스가 유입되는, 블로바이 가스 유입구와, 상기 블로바이 가스로부터 분리된 상기 오일이 배출되고, 상기 공간과 소통되도록 형성되는, 오일 배출구와, 상기 블로바이 가스가 유출되고, 상기 배플 룸과 소통되도록 형성되는, 블로바이 가스 유출구가 형성될 수 있다.The oil separator includes a body forming an oil separation chamber therein, and a partition wall formed in the oil separation chamber to separate the oil from the blow-by gas, wherein the body is formed to communicate with the space a blow-by gas inlet through which the blow-by gas is introduced, an oil outlet formed to discharge the oil separated from the blow-by gas and communicate with the space; A blow-by gas outlet may be formed that is configured to communicate with the baffle room.
상기한 구성에 따르면, 실린더 헤드에 일차적으로 오일을 분리하는 보조수단의 오일 세퍼레이터를 일체로 형성하여 보다 확실한 오일 분리를 제공할 수 있는 효과가 있다.According to the above configuration, there is an effect that more reliable oil separation can be provided by integrally forming the oil separator of the auxiliary means for firstly separating oil in the cylinder head.
크랭크실로 누설된 블로바이 가스 내 오일을 실린더 헤드에서 1차적으로 걸러내고, 다시 실린더 헤드 커버 또는 별도의 오일 분리부에서 2차로 거른 후 오일 팬으로 리턴시키면 오일 소모량이 획기적으로 줄며, 연소에 사용되는 신기 중 오일성분을 줄일 수 있어 엔진의 내구성 향상 및 배출가스 저감에도 크게 기여할 수 있다.If the oil in the blow-by gas leaked into the crankcase is first filtered from the cylinder head, then filtered again through the cylinder head cover or a separate oil separator, then returned to the oil pan, the oil consumption is dramatically reduced and the By reducing the oil component in the new engine, it can greatly contribute to the improvement of engine durability and reduction of exhaust gas.
도 1은 오일 분리를 위한 종래의 헤드 커버의 구조를 개략적으로 보여주는 도면이다. 1 is a view schematically showing the structure of a conventional head cover for oil separation.
도 2는 본 개시물의 실시예들에 따른 오일 세퍼레이터를 구비하는 엔진의 외관을 개략적으로 보여주는 도면이다. 2 is a diagram schematically showing an exterior of an engine including an oil separator according to embodiments of the present disclosure;
도 3은 도 2의 오일 세퍼레이터를 구비하는 실린더 헤드의 외관을 개략적으로 보여주는 도면이다. FIG. 3 is a view schematically showing an external appearance of a cylinder head including the oil separator of FIG. 2 .
도 4는 도 2의 오일 세퍼레이터의 구조를 개략적으로 보여주는 단면도이다. 4 is a cross-sectional view schematically illustrating the structure of the oil separator of FIG. 2 .
도 5는 도 2의 오일 세퍼레이터의 구조를 개략적으로 보여주는 단면도이다.5 is a cross-sectional view schematically illustrating the structure of the oil separator of FIG. 2 .
이하 첨부 도면을 참조하여 본 개시물의 실시예들을 상세히 설명한다.Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.
도 2는 본 개시물의 실시예들에 따른 오일 세퍼레이터를 구비하는 엔진의 외관을 개략적으로 보여주는 도면이고, 도 3은 도 2의 오일 세퍼레이터를 구비하는 실린더 헤드의 외관을 개략적으로 보여주는 도면이고, 도 4는 도 2의 오일 세퍼레이터의 구조를 개략적으로 보여주는 단면도이고, 도 5는 도 2의 오일 세퍼레이터의 구조를 개략적으로 보여주는 단면도이다. FIG. 2 is a view schematically showing an external appearance of an engine having an oil separator according to embodiments of the present disclosure, FIG. 3 is a diagram schematically showing an external appearance of a cylinder head having an oil separator of FIG. 2, and FIG. 4 is a cross-sectional view schematically showing the structure of the oil separator of FIG. 2 , and FIG. 5 is a cross-sectional view schematically illustrating the structure of the oil separator of FIG. 2 .
도시한 바와 같이, 본 개시물의 오일 세퍼레이터는 차량용 엔진의 실린더 헤드(200)에 일체로 형성될 수 있는데, 엔진은 실린더 블록(100), 실린더 헤드(200), 헤드 커버(300), 체인 커버(500) 및 오일 팬(미도시)을 포함할 수 있다. As shown, the oil separator of the present disclosure may be integrally formed with a cylinder head 200 of an engine for a vehicle, and the engine includes a cylinder block 100, a cylinder head 200, a head cover 300, a chain cover ( 500) and an oil pan (not shown).
실린더 블록(100), 실린더 헤드(200) 및 피스톤은 내부에 연소실을 형성할 수 있다. 오일 팬은 실린더 블록(100)과 결합되어 내부에 크랭크실을 형성할 수 있다. 헤드 커버(300)는 실린더 헤드(200)와 결합되고 내부에 배플 룸(311)을 형성할 수 있다. 체인 커버(500)는 오일 팬 및 헤드 커버(300)와 결합되어 실린더 블록(100) 및 실린더 헤드(200)와의 사이에 공간을 형성할 수 있다. The cylinder block 100 , the cylinder head 200 and the piston may form a combustion chamber therein. The oil pan may be coupled to the cylinder block 100 to form a crankcase therein. The head cover 300 may be coupled to the cylinder head 200 and form a baffle room 311 therein. The chain cover 500 may be coupled to the oil pan and the head cover 300 to form a space between the cylinder block 100 and the cylinder head 200 .
실린더 블록(100)은 내부에 실린더를 형성할 수 있다. 피스톤이, 실린더의 내벽과 밀착된 상태로 실린더 내에서 왕복동 운동을 하게 되는데, 이때 실린더 내벽과 피스톤의 간극을 통하여 블로바이 가스가 실린더 블록(100) 하부의 크랭크실 내로 누설될 수 있다. The cylinder block 100 may form a cylinder therein. The piston makes a reciprocating motion within the cylinder while in close contact with the inner wall of the cylinder. At this time, the blow-by gas may leak into the crank chamber under the cylinder block 100 through the gap between the inner wall of the cylinder and the piston.
크랭크실로 누설된 블루우바이 가스의 일부는 실린더 블록(100) 내에 형성된 통로(미도시)를 통하여 헤드 커버(300) 내에 형성된 배플 룸(311)으로 유입된다. 또한 블루우바이 가스의 또 다른 일부는 체인 커버(500)와 실린더 블록(100) 및 실린더 헤드(200) 사이의 공간을 통하여 흐르는데, 그 중 일부는 헤드 커버(300) 내에 형성된 배플 룸(311)으로 직접 유입되고, 나머지는 본 개시물의 오일 세퍼레이터를 통과한 뒤, 헤드 커버(300) 내에 형성된 배플 룸(311)으로 유입된다. A part of the blue-bye gas leaked into the crankcase is introduced into the baffle room 311 formed in the head cover 300 through a passage (not shown) formed in the cylinder block 100 . In addition, another part of the blue-bye gas flows through the space between the chain cover 500 and the cylinder block 100 and the cylinder head 200 , and a part of it flows into the baffle room 311 formed in the head cover 300 . Directly introduced, the remainder flows through the oil separator of the present disclosure, and then flows into the baffle room 311 formed in the head cover 300 .
헤드 커버(300) 내에 형성된 배플 룸(311)에서 오일 분리를 수행하는 종래의 엔진에서는 배플 룸(311)의 크기를 늘리는데 제약이 있어, 오일 분리 성능이 좋지 못한 한계가 있었다. 따라서, 종래의 엔진에서는 헤드 커버(300) 외부에 별도의 오일 분리부 (예컨대, 도 1의 오일 분리부(18))를 두었으나, 이로 인하여 구조가 복잡해지고 제작 단가가 상승하게 되는 단점이 있었다.In a conventional engine in which oil is separated in the baffle room 311 formed in the head cover 300 , there is a limitation in increasing the size of the baffle room 311 , so that the oil separation performance is not good. Therefore, in the conventional engine, a separate oil separation unit (eg, the oil separation unit 18 of FIG. 1 ) is provided outside the head cover 300, but this has a disadvantage in that the structure is complicated and the manufacturing cost is increased. .
본 개시물에서는 종래의 오일 회수 구조를 변경함이 없이도, 간단히 실린더 헤드(200)에 오일 세퍼레이터를 일체화하여 오일 회수율을 향상시킬 수 있다. 따라서, 기존의 블로바이 가스 벤틸레이션 구조와 호환성을 가지면서도, 공간적 제약을 극복하여 오일 회수율을 극적으로 향상시킬 수 있다.In the present disclosure, the oil recovery rate can be improved by simply integrating the oil separator in the cylinder head 200 without changing the conventional oil recovery structure. Therefore, while having compatibility with the existing blow-by gas ventilation structure, it is possible to overcome the spatial limitation and dramatically improve the oil recovery rate.
실린더 헤드(200)에는, 블로바이 가스로부터 오일을 분리하는 오일 세퍼레이터가 일체화되어 형성될 수 있다. 오일 세퍼레이터는, 내부에 오일 분리실을 형성하는 바디(201)와, 블로바이 가스로부터 오일을 분리하기 위하여 오일 분리실 내에 형성되는 격벽(221)을 포함할 수 있다. 또한, 오일 세퍼레이터는 오일 분리실이 외부로부터 독립되게 구획되도록 바디(201)에 결합되는 오일 세퍼레이터 커버(241)를 포함할 수 있다. An oil separator that separates oil from the blow-by gas may be integrally formed in the cylinder head 200 . The oil separator may include a body 201 forming an oil separation chamber therein, and a partition wall 221 formed in the oil separation chamber to separate oil from the blow-by gas. Also, the oil separator may include an oil separator cover 241 coupled to the body 201 so that the oil separation chamber is partitioned independently from the outside.
바디(201)에는 블로바이 가스 유입구(211), 오일 배출구(231) 및 불로우바이 가스 유출구(213)가 형성될 수 있다. 블로바이 가스는 블로바이 가스 유입구(211)를 통하여 오일 분리실 내로 유입될 수 있다. 블로바이 가스 유입구(211)는 체인 커버(500)에 의하여 형성되는 상기 공간과 소통되도록 형성될 수 있다. 격벽(221)은, 블로바이 가스로부터 오일을 분리하기 위하여 오일 세퍼레이터 내에 형성될 수 있다. 블로바이 가스로부터 분리된 오일은 오일 배출구(231)를 통하여 배출될 수 있다. 오일 배출구(231)는 상기 공간과 소통되도록 형성될 수 있다. 블로바이 가스는 블로바이 가스 유출구(213)를 통하여 유출될 수 있다. 블로바이 가스 유출구(213)는 배플 룸(311)과 소통되도록 형성될 수 있다. A blow-by gas inlet 211 , an oil outlet 231 , and a blow-by gas outlet 213 may be formed in the body 201 . The blow-by gas may be introduced into the oil separation chamber through the blow-by gas inlet 211 . The blow-by gas inlet 211 may be formed to communicate with the space formed by the chain cover 500 . The partition wall 221 may be formed in the oil separator to separate oil from the blow-by gas. The oil separated from the blow-by gas may be discharged through the oil outlet 231 . The oil outlet 231 may be formed to communicate with the space. The blow-by gas may be discharged through the blow-by gas outlet 213 . The blow-by gas outlet 213 may be formed to communicate with the baffle room 311 .
블로바이 가스 유입구(211)로 유입된 블로바이 가스가 유출구(213)로 나가기 전에 격벽(221) 구조를 거치면서 오일이 분리되고, 분리된 오일은 오일 배출구(231) 및 체인 커버(500)와 실린더 헤드(200) 및 실린더 블록(100) 사이의 공간을 순차적으로 거쳐 다시 오일 팬 내로 회수된다. 일부 오일이 분리된 블로바이 가스는 유출구(213)를 통하여 헤드 커버(300) 내의 배플 룸(311)으로 이동하여 오일을 추가로 회수할 수 있다.Before the blow-by gas introduced into the blow-by gas inlet 211 exits the outlet 213, the oil is separated through the partition wall 221 structure, and the separated oil is separated from the oil outlet 231 and the chain cover 500 and It is recovered into the oil pan again through the space between the cylinder head 200 and the cylinder block 100 sequentially. The blow-by gas from which some oil is separated may move to the baffle room 311 in the head cover 300 through the outlet 213 to additionally recover oil.

Claims (1)

  1. 상호 결합되어 내부에 연소실을 형성하는 실린더 블록, 실린더 헤드 및 피스톤과,a cylinder block, a cylinder head and a piston coupled to each other to form a combustion chamber therein;
    상기 실린더 블록과 결합되어 내부에 크랭크실을 형성하는 오일 팬과, an oil pan coupled to the cylinder block to form a crankcase therein;
    상기 실린더 헤드와 결합되고 내부에 배플 룸을 형성하는 헤드 커버와, a head cover coupled to the cylinder head and forming a baffle room therein;
    상기 오일 팬 및 상기 헤드 커버와 결합되어 상기 실린더 헤드와의 사이에 공간을 형성하는 체인 커버를 포함하고, a chain cover coupled to the oil pan and the head cover to form a space between the oil pan and the cylinder head;
    상기 실린더 헤드에는, 상기 연소실로부터 상기 크랭크실로 누설된 블로바이 가스로부터 오일을 분리하는 오일 세퍼레이터가 일체화되어 형성되고, An oil separator for separating oil from the blow-by gas leaked from the combustion chamber to the crank chamber is integrally formed in the cylinder head,
    상기 오일 세러페이터는, The oil separator is
    내부에 오일 분리실을 형성하는 바디와,A body forming an oil separation chamber therein;
    상기 블로바이 가스로부터 상기 오일을 분리하기 위하여 상기 오일 분리실 내에 형성되는 격벽을 포함하고, and a partition wall formed in the oil separation chamber to separate the oil from the blow-by gas,
    상기 바디에는, In the body,
    상기 공간과 소통되도록 형성되고, 상기 블로바이 가스가 유입되는, 블로바이 가스 유입구와, a blow-by gas inlet formed to communicate with the space and into which the blow-by gas is introduced;
    상기 블로바이 가스로부터 분리된 상기 오일이 배출되고, 상기 공간과 소통되도록 형성되는, 오일 배출구와,an oil outlet formed to discharge the oil separated from the blow-by gas and communicate with the space;
    상기 블로바이 가스가 유출되고, 상기 배플 룸과 소통되도록 형성되는, 블로바이 가스 유출구가 형성되는, A blow-by gas outlet is formed through which the blow-by gas flows and is formed to communicate with the baffle room;
    오일 세퍼레이터 일체형 실린더 헤드를 갖는 엔진.An engine with an oil separator integrated cylinder head.
PCT/KR2020/017174 2020-11-27 2020-11-27 Engine with oil separator-integrated cylinder head WO2022114303A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2020-0162019 2020-11-27
KR1020200162019A KR102467498B1 (en) 2020-11-27 2020-11-27 Engine having a cylinder head into which an oil separator is built

Publications (1)

Publication Number Publication Date
WO2022114303A1 true WO2022114303A1 (en) 2022-06-02

Family

ID=81755754

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2020/017174 WO2022114303A1 (en) 2020-11-27 2020-11-27 Engine with oil separator-integrated cylinder head

Country Status (2)

Country Link
KR (1) KR102467498B1 (en)
WO (1) WO2022114303A1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20050000073A (en) * 2003-06-23 2005-01-03 현대자동차주식회사 Blow by gas recirculation device having separating engine oil in vehicle
KR20150078882A (en) * 2013-12-31 2015-07-08 현대자동차주식회사 Structure for discharging blow-by gas
JP2016200136A (en) * 2015-04-08 2016-12-01 スズキ株式会社 Oil separation structure of internal combustion engine
US20180112567A1 (en) * 2016-10-26 2018-04-26 GM Global Technology Operations LLC Integrated oil separator assembly for crankcase ventillation
JP6447261B2 (en) * 2015-03-09 2019-01-09 アイシン精機株式会社 Oil mist separation mechanism of internal combustion engine

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010054125A (en) * 1999-12-03 2001-07-02 이계안 Cylinder block of diesel engines
KR100401914B1 (en) * 2001-06-25 2003-10-17 현대자동차주식회사 Oil separator for blow by gas

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20050000073A (en) * 2003-06-23 2005-01-03 현대자동차주식회사 Blow by gas recirculation device having separating engine oil in vehicle
KR20150078882A (en) * 2013-12-31 2015-07-08 현대자동차주식회사 Structure for discharging blow-by gas
JP6447261B2 (en) * 2015-03-09 2019-01-09 アイシン精機株式会社 Oil mist separation mechanism of internal combustion engine
JP2016200136A (en) * 2015-04-08 2016-12-01 スズキ株式会社 Oil separation structure of internal combustion engine
US20180112567A1 (en) * 2016-10-26 2018-04-26 GM Global Technology Operations LLC Integrated oil separator assembly for crankcase ventillation

Also Published As

Publication number Publication date
KR102467498B1 (en) 2022-11-15
KR20220074000A (en) 2022-06-03

Similar Documents

Publication Publication Date Title
JPH0723531Y2 (en) Blow-by gas recirculation system for engines
US8408190B2 (en) Air-oil separator for extracting oil from engine blowby gas
KR101724503B1 (en) Crank case ventilation system
CN103696826B (en) A kind of deaerator of supercharged engine
CN103397926A (en) Respiratory system of pressurization gasoline engine
KR100765584B1 (en) System for closed crankcase ventilation
JP2020067008A (en) Internal combustion engine
CN103422941B (en) PCV system
WO2022114303A1 (en) Engine with oil separator-integrated cylinder head
GB2260365A (en) Oil Separation from i.c. engine crankcase gases
KR101327058B1 (en) Apparatus for separating blow by gas and engine oil of vehicle engine and ventilation structure of blow by gas
CN108678835B (en) Gas taking structure of oil-gas separator and engine
CN109469531B (en) Crankcase ventilation system oil and gas separator assembly and vehicle
US11047274B2 (en) Air-oil separator
CN100400813C (en) Engine
CN113323741B (en) Engine crankcase ventilation structure and method
CN104033210A (en) Positive Crankcase Ventilation System For Two-cylinder Engine
CN201884095U (en) Oil-gas separating system of automobile engine
CN101994618A (en) Intake manifold advanced in uniform distributing of PCV gas
JP5605308B2 (en) Blow-by gas reduction device
KR20210156998A (en) Blow-by gas ventilation system
CN102425475A (en) Forced ventilation system of engine crankcase
JP2007297941A (en) Blow-by gas reduction device for internal combustion engine
KR20050034791A (en) Oil separator
CN111963275B (en) Side oil-gas separator with preseparation function

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20963698

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20963698

Country of ref document: EP

Kind code of ref document: A1