KR20030027273A - Piston cooling apparatus - Google Patents
Piston cooling apparatus Download PDFInfo
- Publication number
- KR20030027273A KR20030027273A KR1020010060393A KR20010060393A KR20030027273A KR 20030027273 A KR20030027273 A KR 20030027273A KR 1020010060393 A KR1020010060393 A KR 1020010060393A KR 20010060393 A KR20010060393 A KR 20010060393A KR 20030027273 A KR20030027273 A KR 20030027273A
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- South Korea
- Prior art keywords
- oil
- piston
- jet
- cooling
- cylinder block
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P3/00—Liquid cooling
- F01P3/06—Arrangements for cooling pistons
- F01P3/10—Cooling by flow of coolant through pistons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P3/00—Liquid cooling
- F01P2003/006—Liquid cooling the liquid being oil
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- 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
- F02F3/00—Pistons
- F02F3/16—Pistons having cooling means
- F02F3/20—Pistons having cooling means the means being a fluid flowing through or along piston
- F02F3/22—Pistons having cooling means the means being a fluid flowing through or along piston the fluid being liquid
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
Description
본 발명은 오일에 의한 피스톤 냉각장치에 관한 것이다.The present invention relates to a piston cooling device by oil.
실린더내의 연소가스의 온도는 2000℃ 이상에 달하지만 이 열이 모두 동력으로 전환되는 것은 아니고 상당량의 열이 실린더, 실린더헤드 및 피스톤등에 흡수되어 열손실을 가져오게 된다. 그런데 이들 부분들의 온도가 과도하게 상승하게 되면 실린더의 변형을 일으키거나 또는 실린더 벽의 유막을 파괴하여 윤활 불량을 일으키거나 심할 경우 엔진을 손상시키게 되며, 연소상태도 나빠지는 결과 노킹이나 조기점화를 일으키게 되어 엔진출력이 급격히 저하되며, 이때문에 엔진을 냉각하여 과열을 방지하고 적온으로 유지하는 냉각장치를 사용하고 있다.The temperature of the combustion gas in the cylinder reaches 2000 ° C or higher, but not all of this heat is converted into power, and a considerable amount of heat is absorbed by the cylinder, the cylinder head, and the piston, resulting in heat loss. However, if the temperature of these parts rises excessively, the cylinder may be deformed or the oil film on the cylinder wall may be destroyed, resulting in poor lubrication or severe damage to the engine, resulting in poor combustion and knocking or premature ignition. As a result, the engine output is drastically lowered. Therefore, a cooling device is used to cool the engine to prevent overheating and keep it at an appropriate temperature.
엔진을 냉각하기 위한 장치로는 통상 냉각수를 순환시켜 고온을 받는 실린더헤드와 실린더블록을 냉각하는 수냉식이 주로 사용되고 있다.As an apparatus for cooling an engine, a water cooling type for cooling a cylinder head and a cylinder block to circulate cooling water and receiving a high temperature is mainly used.
그러나 실린더내에서 상하로 왕복 구동하는 피스톤은 외부로부터 순환하는 냉각수가 접촉할 수 없어 냉각수에 의해서는 피스톤을 직접 냉각할 수 없다는 문제가 있다.However, the piston reciprocating up and down in the cylinder has a problem that the cooling water circulated from the outside cannot contact, so that the piston cannot be directly cooled by the cooling water.
이를 해소하기 위하여 종래의 경우 실린더블록의 하부에 오일제트를 설치하고, 피스톤 내부에 오일제트로부터 분사되는 오일이 순환하는 오일냉각갤러리를 형성하므로써 오일에 의해 피스톤을 냉각하고 있다.In order to solve this problem, in the conventional case, an oil jet is installed in the lower part of the cylinder block, and the piston is cooled by oil by forming an oil cooling gallery through which oil injected from the oil jet circulates in the piston.
그러나 오일제트에 의한 피스톤 냉각 방식의 경우 오일제트와 피스톤의 오일냉각갤러리의 입구부의 위치를 정확하게 일치시켜야 하기 때문에 제작 및 조립 공정이 매우 까다로우며, 엔진 작동시 피스톤이 하사점에 도달했을 때 오일제트의 분사파이프와 피스톤이 간섭을 일으키게 되는 일이 있어 피스톤 냉각에 실패할 우려가 있으며, 특히 오일제트와의 거리가 멀어지는 피스톤의 상사점 위치에서는 오일공급이 불확실하여 피스톤의 냉각 효과가 저감되는 문제점이 있었다.However, in the case of the piston cooling method by oil jet, the manufacturing and assembly process is very difficult because the position of the oil jet and the inlet of the oil cooling gallery of the piston must be exactly matched. The jet of the jet and the piston may interfere with the piston, which may cause the piston to fail. In particular, at the top dead center position of the piston, which is far from the oil jet, the supply of oil is uncertain and the cooling effect of the piston is reduced. There was this.
이에 본 발명은 상기한 점을 감안하여 제안한 것으로서 그의 목적으로 하는 것은 오일제트를 사용하지 아니하므로 피스톤과의 간섭 우려가 없으며, 피스톤의 냉각 효율성이 크게 증대하는 구조의 오일에 의한 피스톤 냉각 장치를 제공하는데 있다.Accordingly, the present invention has been proposed in view of the above point, and its object is not to use an oil jet, so there is no fear of interference with the piston, and a piston cooling device using oil having a structure in which the cooling efficiency of the piston is greatly increased is provided. It is.
상기한 목적을 달성하기 위하여 본 발명은 피스톤의 상부 몸체내에 형성되는 오일냉각갤러리와;The present invention provides an oil cooling gallery formed in the upper body of the piston to achieve the above object;
피스톤의 측면으로부터 상기 오일냉각갤러리에 연통하도록 형성되는 오일유입통로와;An oil inflow passage formed to communicate with the oil cooling gallery from a side of a piston;
실린더블록의 보어부 내벽면에 상하로 형성되는 가이드홈과;A guide groove formed vertically on the inner wall of the bore portion of the cylinder block;
상기 가이드홈에 계합하여 피스톤의 상하 운동에 연동하여 승하강 운동하는 슬라이딩식 오일제트와;A sliding oil jet which engages with the guide groove and moves up and down in association with a vertical motion of the piston;
상기 오일제트와 상기 오일유입통로를 접속하는 오일공급파이프와;An oil supply pipe connecting the oil jet and the oil inflow passage;
상기 슬라이딩식 오일제트에 오일을 공급해주기 위하여 실린더블록에 형성되는 오일챔버와;An oil chamber formed in a cylinder block to supply oil to the sliding oil jet;
상기 오일챔버와 슬라이딩 오일제트를 연결하는 오일공급용 플렉시블호스; 및An oil supply flexible hose connecting the oil chamber and the sliding oil jet; And
오일냉각갤러리내의 오일을 실린더블록 하부의 오일팬으로 드레인 하도록 피스톤에 형성된 오일드레인통로;An oil drain passage formed in the piston to drain oil in the oil cooling gallery to an oil pan below the cylinder block;
로 구성되어 있다.Consists of
도 1은 본 발명에 의한 피스톤 냉각장치를 나타내는 도면1 is a view showing a piston cooling device according to the present invention
도 2는 동상 피스톤 냉각장치의 A-A 단면도2 is A-A section of the in-phase piston chiller
도 3은 본 발명의 일방향 밸브를 나타내는 도면3 is a view showing a one-way valve of the present invention
※ 도면의 주요 부분에 대한 부호의 설명※ Explanation of codes for main parts of drawing
1 : 피스톤 2 : 실린더블록1: Piston 2: Cylinder Block
3 : 피스톤랜드부 4 : 오일냉각갤러리3: piston land part 4: oil cooling gallery
5 : 오일유입통로 6 : 보어내벽면5: oil inflow passage 6: bore inner wall surface
7 : 가이드요홈 8 : 오일제트7: guide groove 8: oil jet
9 : 오일공급파이프 10 : 오일챔버9: Oil supply pipe 10: Oil chamber
11 : 플렉시블호스 12 : 오일드레인통로11: Flexible hose 12: Oil drain passage
13 : 일방향밸브13: one-way valve
이하 본 발명의 구성을 첨부한 도면을 참조하여 설명한다.Hereinafter, the configuration of the present invention will be described with reference to the accompanying drawings.
도 1은 본 발명의 오일에 의한 피스톤 냉각장치를 나타내는 도면이며, 도 2는 도 1의 A-A 단면도이다.1 is a view showing a piston cooling device with oil of the present invention, Figure 2 is a cross-sectional view A-A of FIG.
도면중 부호 1은 피스톤이고, 부호 2는 피스톤(1)의 왕복 운동을 안내하는 실린더블록(2)이다.In the drawing, reference numeral 1 denotes a piston, and reference numeral 2 denotes a cylinder block 2 for guiding the reciprocating motion of the piston 1.
피스톤(1)의 상단 몸체내, 즉 피스톤 랜드부(3)에 인접한 몸체내에는 오일냉각갤러리(4)가 환상의 공간으로 형성되어 있으며, 이 오일냉각갤러리(4)는 피스톤랜드부(3)를 통하여 형성된 오일유입통로(5)에 수평으로 연통하여 접속되고 있다.In the upper body of the piston (1), that is, in the body adjacent to the piston land portion (3), an oil cooling gallery (4) is formed in an annular space, and the oil cooling gallery (4) is the piston land portion (3). It is connected in horizontal communication with the oil inflow passage 5 formed through.
상기 실린더블록(2)의 보어내벽면(6)에는 더브테일형상(사다리꼴 형상)의 가이드요홈(7)이 상하 수직 방향으로 형성되어 있고, 상기 가이드요홈(7)은 트러스트 또는 안티 트러스트면에 설치하는 것이 바람직하다.The bore inner wall surface 6 of the cylinder block 2 is formed with a guide groove 7 having a dovetail shape (trapezoidal shape) in the vertical direction, and the guide groove 7 is installed on the thrust or anti-trust surface. It is desirable to.
그리고 상기 가이드요홈(7)에는 슬라이딩식 오일제트(8)가 계합되어 상기 피스톤(1)의 상하 운동에 상하로 연동하여 슬라이딩 이동하며, 오일제트(8)는 오일을 공급하는 오일공급파이프(9)를 통해 상기 오일유입통로(5)에 끼워져 접속되어 있다.A sliding oil jet 8 is engaged with the guide recess 7 so as to slidably move up and down with the vertical movement of the piston 1, and the oil jet 8 supplies an oil supply pipe 9 for supplying oil. Is connected to the oil inflow passage (5) through.
또 상기 실린더블록(2)에는 오일챔버(10)가 형성되며, 이 오일챔버(10)에는 오일펌프로 부터 압송되는 오일이 공급된다.In addition, an oil chamber 10 is formed in the cylinder block 2, and the oil chamber 10 is supplied with oil pumped from an oil pump.
그리고 오일챔버(10)와 오일제트(8)는 플렉시블호스(11)로 연결되어 있다.The oil chamber 10 and the oil jet 8 are connected by a flexible hose 11.
도면중 부호 12는 오일냉각갤러리(4)내의 오일을 오일팬으로 드레인시키기위한 오일드레인통로이다.Reference numeral 12 in the figure denotes an oil drain passage for draining oil in the oil cooling gallery 4 to an oil pan.
그리고 도면중 부호 13은 볼(14)과 스프링(15)으로 구성된 일방향 밸브로서 오일이 오일챔버(10)에서 오일제트(8)쪽으로만 흐르도록 단속한다.In addition, reference numeral 13 in the drawing is a one-way valve composed of a ball 14 and a spring 15 to regulate the oil so that the oil flows only from the oil chamber 10 toward the oil jet 8.
이상과 같은 본 발명 장치에 의한 피스톤(1)의 냉각 과정을 설명하면 다음과 같다.Referring to the cooling process of the piston 1 according to the present invention as described above is as follows.
엔진에 구동되어 피스톤(1)이 상하로 운동하게 되면, 강체인 오일공급파이프(9)로 연결된 슬라이딩 이동체인 오일제트(8) 역시 가이드 요홈(7)을 따라 승하강 운동하며, 이와 동시에 오일 펌프로부터 급송되는 오일이 오일챔버(10), 플렉시블호스(11), 오일제트(8), 오일공급파이프(9) 및 오일유입통로(5)를 거쳐 오일냉각갤러리(4)에 도달하여 환상으로 피스톤(1) 몸체내를 순환하여 냉각한 후 오일드레인통로(12)를 통해 낙하하여 오일팬으로 귀환하게 되는 것이다.When the piston (1) is driven by the engine to move up and down, the oil jet (8) of the sliding movable chain connected to the oil supply pipe (9) also moves up and down along the guide groove (7), and at the same time the oil pump The oil supplied from the oil chamber (10), the flexible hose (11), the oil jet (8), the oil supply pipe (9) and the oil inlet passage (5) reaches the oil cooling gallery (4) and annularly announces the piston (1) After circulating and cooling the body, the oil is dropped through the oil passage 12 to return to the oil pan.
이상과 같은 본 발명은 실린더블록 하부에의 고정식 오일제트의 설치를 생략하고 실린더 내벽면의 가이드 요홈을 따라 승하강 하는 오일제트를 설치하고, 그 오일제트를 파이프로서 피스톤의 오일냉각갤러리에 접속하여 피스톤과 연동하도록 한 후 실린더블록에 형성한 오일챔버와 플렉시블호스로 접속하여 이동체인 오일제트가 피스톤과 함께 상하로 움직이면서 냉각 오일을 피스톤 몸체내에 공급하는 것에 의해서 오일이 피스톤에 안정적으로 공급되므로 피스톤 냉각 효과가 증진되고 복잡한 구조의 오일제트 및 조립 장착 작업의 정밀도가 요구되지 아니하므로 비용이 저감되는 효과가 있다.The present invention as described above omits the installation of the fixed oil jet in the lower cylinder block, and installs the oil jet to move up and down along the guide groove of the inner wall of the cylinder, the oil jet is connected to the oil cooling gallery of the piston as a pipe After interlocking with the piston, connect the oil chamber formed in the cylinder block with the flexible hose, and the moving chain oil jet moves up and down with the piston, supplying the cooling oil into the piston body. Since the effect is enhanced and the precision of the oil jet and the assembly and mounting work of the complicated structure is not required, the cost can be reduced.
Claims (4)
Priority Applications (1)
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KR10-2001-0060393A KR100488549B1 (en) | 2001-09-28 | 2001-09-28 | Piston cooling apparatus |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7511707B2 (en) * | 2004-05-25 | 2009-03-31 | Samsung Sdi Co., Ltd. | Method and circuit for driving a plasma display panel and a plasma display device |
CN111412055A (en) * | 2020-03-27 | 2020-07-14 | 河北科技大学 | Piston cooling device |
WO2020143627A1 (en) * | 2019-01-09 | 2020-07-16 | Qingdao Haier Refrigerator Co., Ltd. | Cooled piston and cylinder for compressors and engines |
CN113281050A (en) * | 2021-05-11 | 2021-08-20 | 华中科技大学 | Pressure oil supply type piston oscillation cooling visual test device |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH0545777Y2 (en) * | 1987-09-07 | 1993-11-26 | ||
JPH0783015A (en) * | 1993-09-10 | 1995-03-28 | Mitsubishi Heavy Ind Ltd | Piston linkage type lubricator |
KR970044443A (en) * | 1995-12-30 | 1997-07-26 | 전성원 | Cooling device of car piston |
-
2001
- 2001-09-28 KR KR10-2001-0060393A patent/KR100488549B1/en not_active IP Right Cessation
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7511707B2 (en) * | 2004-05-25 | 2009-03-31 | Samsung Sdi Co., Ltd. | Method and circuit for driving a plasma display panel and a plasma display device |
WO2020143627A1 (en) * | 2019-01-09 | 2020-07-16 | Qingdao Haier Refrigerator Co., Ltd. | Cooled piston and cylinder for compressors and engines |
CN111412055A (en) * | 2020-03-27 | 2020-07-14 | 河北科技大学 | Piston cooling device |
CN113281050A (en) * | 2021-05-11 | 2021-08-20 | 华中科技大学 | Pressure oil supply type piston oscillation cooling visual test device |
CN113281050B (en) * | 2021-05-11 | 2022-08-02 | 华中科技大学 | Pressure oil supply type piston oscillation cooling visual test device |
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