KR19980047390A - Piston cooling device - Google Patents

Piston cooling device Download PDF

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Publication number
KR19980047390A
KR19980047390A KR1019960065881A KR19960065881A KR19980047390A KR 19980047390 A KR19980047390 A KR 19980047390A KR 1019960065881 A KR1019960065881 A KR 1019960065881A KR 19960065881 A KR19960065881 A KR 19960065881A KR 19980047390 A KR19980047390 A KR 19980047390A
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KR
South Korea
Prior art keywords
oil
piston
small end
end portion
connecting rod
Prior art date
Application number
KR1019960065881A
Other languages
Korean (ko)
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KR100201613B1 (en
Inventor
김규완
Original Assignee
박병재
현대자동차 주식회사
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Priority to KR1019960065881A priority Critical patent/KR100201613B1/en
Publication of KR19980047390A publication Critical patent/KR19980047390A/en
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Publication of KR100201613B1 publication Critical patent/KR100201613B1/en

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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
    • F01P3/08—Cooling of piston exterior only, e.g. by jets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/06—Lubricating systems characterised by the provision therein of crankshafts or connecting rods with lubricant passageways, e.g. bores
    • F01M2001/066—Connecting rod with passageways
    • 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
    • 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 
    • F02F3/0015—Multi-part pistons
    • F02F3/0069—Multi-part pistons the crown and skirt being interconnected by the gudgeon pin

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Abstract

본 발명은 오일분사에 의한 피스톤 냉각장치에 관한 것이다.The present invention relates to a piston cooling apparatus by oil injection.

상기한 목적을 달성하기 위한 수단으로 본 발명은,According to an aspect of the present invention,

피스톤과 크랭크축을 연결하는 커넥팅로드의 소단부로 오일을 공급하도록 상기 커넥팅 로드의 몸체로 오일통로가 형성된 피스톤 기구에 있어서,An oil passage formed in the body of the connecting rod for supplying oil to a small end of a connecting rod connecting a piston and a crankshaft,

상단이 凸 형상으로 형성되어 중앙으로 오일통로(21)와 요홈(22)이 형성된 소단부(5)와;A small end portion (5) having an upper end formed in a convex shape and having an oil passage (21) and a groove (22) formed at the center;

상기 소단부(5)의 상부로 결합되며 오일통로(21)에 접하도록 凹 형상으로 결합되고 내측으로 분사통로(31)가 형성된 분사부재(3)와;A jet member 3 coupled to an upper portion of the small end portion 5 and concavely joined to the oil passage 21 and having a jetting passage 31 formed therein;

상기 분사부재(3)에 천공되는 다수개의 오일분사공(32);A plurality of oil injection holes 32 formed in the injection member 3;

의 구성을 특징으로 한다..

Description

피스톤 냉각장치Piston cooling device

본 발명은 오일분사에 의한 피스톤 냉각장치에 관한 것이다.The present invention relates to a piston cooling apparatus by oil injection.

일반적으로 피스톤은 실린더내를 왕복하며 팽창행정에서 고온·고압의 가스압력을 받아 이것을 커넥팅로드를 거쳐서 크랭크 축에 회전력을 주는 것이다.Generally, the piston reciprocates in a cylinder, receives a high-temperature and high-pressure gas pressure in an expansion stroke, and applies a rotational force to the crankshaft via the connecting rod.

또한 피스톤은 고온의 연소가스에 노출되고, 고압의 압력을 단시간에 충격적으로 받을 뿐 아니라 실린더내를 고속으로 운동하여 실린더 벽과의 사이에 강한 마찰이 생겨 피스톤은 고온으로 상승하게 되므로 오일을 이용하여 윤활 및 마모를 방지하여야 하는 것이다.In addition, the piston is exposed to a high-temperature combustion gas and not only receives a high pressure shock in a short time but also moves at a high speed in the cylinder to generate strong friction between the cylinder wall and the piston, Lubrication and abrasion must be prevented.

그러나 종래의 경우 피스톤 냉각장치로는 도 2 에 도시한는 것과 같이 피스톤(10)과 크랭크 샤프트(60)를 연결하는 커넥팅 로드(20)는 소단부(30)를 피스톤 핀(40)에 의해 결합시키고, 하측의 대단부(50)는 크랭크 샤프트(60)의 크랭크 핀(70)과 연결하도록 하였으며 상기 피스톤 핀()과의 결합부에 윤활과 냉각을 위해 대단부(50)로부터 소단부(30)를 관통하는 오일통로(80)가 뚫려 있다.2, the connecting rod 20 connecting the piston 10 and the crankshaft 60 is connected to the small end portion 30 by the piston pin 40 And the lower large end portion 50 is connected to the crank pin 70 of the crankshaft 60 and the small end portion 30 is provided from the large end portion 50 for lubrication and cooling at the coupling portion with the piston pin. An oil passage 80 penetrating through the oil passage 80 is opened.

그러나 상기한 구조는 피스톤핀과 소단부의 결합부로만 냉각이 가능할 뿐 피스톤의 크라운부는 열적부하를 저감할 수는 없게되는 문제점이 지적되고 있다.However, it has been pointed out that the above-described structure can cool only the coupling portion between the piston pin and the small end portion, and the crown portion of the piston can not reduce the thermal load.

이에 따라 피스톤 크라운부의 냉각을 위해 크랭크실에 오일분사 제트를 설치하는 대안도 제시되어 있으나 이는 그 구조가 복잡해지고 비용이 많이 소요된다는 결점이 있다.As a result, an alternative method of installing an oil injection jet in the crankcase for cooling the piston crown portion has been proposed. However, the structure is complicated and expensive.

이에 본 발명은 상기한 문제점을 개선시키기 위하여 피스톤핀과 커넥팅로드의 소단부로 윤활 및 냉각을 위해 공급되는 오일을 크라운부에 분사하여 과열을 방지하고자 하는데 본 발명의 목적이 있다.SUMMARY OF THE INVENTION It is an object of the present invention to prevent overheating by injecting oil supplied for lubrication and cooling to a crown portion with a small end portion of a piston pin and a connecting rod.

상기한 목적을 달성하기 위한 수단으로 본 발명은,According to an aspect of the present invention,

피스톤과 크랭크축을 연결하는 커넥팅로드의 소단부로 오일을 공급하도록 상기 커넥팅 로드의 몸체로 오일통로가 형성된 피스톤 기구에 있어서,An oil passage formed in the body of the connecting rod for supplying oil to a small end of a connecting rod connecting a piston and a crankshaft,

상단이 凸 형상으로 형성되어 중앙으로 오일통로와 요홈이 형성된 소단부와;A small end portion having an upper end formed in a convex shape and having an oil passage and a groove formed at the center thereof;

상기 소단부의 상부로 결합되며 오일통로에 접하도록 凹 형상으로 결합되고 내측으로 분사통로가 형성된 분사부재와;An injection member coupled to an upper portion of the small end portion and coupled to the oil passage in a concave shape so as to contact the oil passage and having an injection passage formed therein;

상기 분사부재에 천공되는 다수개의 오일분사공;A plurality of oil injection holes formed in the injection member;

의 구성을 특징으로 한다..

도 1 은 본 발명에 의한 피스톤 냉각장치의 구성을 나타내는 단면도1 is a sectional view showing a configuration of a piston cooling apparatus according to the present invention

도 2 는 종래 기술2 is a cross-

* 도면 중 주요 부분에 대한 부호의 설명 *Description of the Related Art [0002]

1 : 피스톤 2 : 커넥팅 로드1: piston 2: connecting rod

21 : 오일통로 22 : 요홈21: oil passage 22: groove

3 : 분사부재 31 : 분사통로3: injection member 31: injection passage

32 : 오일분사공 4 : 피스톤핀32: Oil splitter hole 4: Piston pin

5 : 소단부5: Small end

이를 첨부한 실시예 도면을 참조하여 보다 상세하게 설명하면 도 1 은 본 발명에 의한 피스톤 냉각장치의 구성을 나타내는 단면도이다. 도면중 부호 1 은 피스톤이고 부호 2 는 커넥팅 로드이다.1 is a cross-sectional view illustrating the configuration of a piston cooling apparatus according to the present invention. In the drawings, reference numeral 1 denotes a piston and reference numeral 2 denotes a connecting rod.

커넥팅 로드(2)의 몸체내에는 크랭크 샤프트와 연통하는 오일통로(21)가 형성되어 소단부(5)에 윤활 및 냉각을 위한 오일이 공급된다.An oil passage (21) communicating with the crankshaft is formed in the body of the connecting rod (2), and oil for lubricating and cooling is supplied to the small end portion (5).

상기 소단부(5)의 상단이 凸 형상의 중앙으로 오일통로와 요홈(22)이 형성되도록 하고 상기 소단부의 요홈(22)과 접하도록 분사부재(3)의 저면은 凹 형상으로 형성하여 결합시겼다.The bottom surface of the jetting member 3 is formed in a concave shape so that the oil passage and the groove 22 are formed at the center of the convex shape of the upper end of the small end portion 5 and the groove 22 of the small end portion is in contact therewith, .

또한 상기 커넥팅 로드(2)의 오일통로(21)를 통하여 공급되는 오일이 요홈(22)에서 분사부재(3)의 내측으로 연속해서 공급되도록 하여 피스톤(1)의 크라운부로 분사될 수 있도록 다수개의 오일분사공(32)이 천공되어 있다.The oil supplied through the oil passage 21 of the connecting rod 2 is continuously supplied to the inside of the jetting member 3 from the groove 22 so that the oil supplied to the crown portion of the piston 1 And an oil injection hole 32 is drilled.

상기와 같은 구성에 따른 작용을 살펴보면 우선 크랭크 샤프트로 부터 공급된 오일은 커넥팅 로드(2)의 대단부로부터 피스톤 핀(4)과 결합된 소단부(5)까지 이어지게 된다.The oil supplied from the crankshaft extends from the large end portion of the connecting rod 2 to the small end portion 5 coupled with the piston pin 4 at first.

상기 피스톤 핀(4)과 커넥팅 로드(2)의 소단부(5)는 피스톤(1)의 직선운동에 의해 고온의 상태일 때 상기 소단부(5)의 오일은 피스톤 핀(4)에서 윤활 및 냉각을 시키고, 오일은 상기 소단부(5)의 상단으로 凸 형상의 중앙에 형성된 요홈(22)으로 계속 이어지게 되며 상기 요홈(22)의 오일은 다시 분사부재(3)의 분사통로(31)로 공급된 후 오일분사공(32)을 통하여 크라운부로 분사되어 지는 것이다.When the piston pin 4 and the small end 5 of the connecting rod 2 are in a high temperature state due to the linear movement of the piston 1, the oil in the small end portion 5 lubricates and lubricates the piston pin 4, The oil continues to the groove 22 formed at the center of the convex shape toward the upper end of the small end portion 5 and the oil of the groove 22 again flows into the injection passage 31 of the injection member 3 And is injected into the crown portion through the oil injection hole 32 after being supplied.

따라서 상기 피스톤(1)의 크라운부는 분사부재(3)의 사방으로 천공된 오일분사공(32)으로 부터 분사된 오일에 의해 열적부하를 저감하는 효과가 제공되는 것이다.Therefore, the crown portion of the piston 1 is provided with the effect of reducing the thermal load by the oil injected from the oil injection hole 32 drilled in all directions of the injection member 3.

또한 종래의 경우 피스톤 핀(4)의 주변으로만 공급되어 냉각 및 윤활이 가능하도록 하는 오일은 상기 크라운부의 내측에 방사형으로 분사되도록 하므로서 크라운부는 물론 피스톤 핀(4)과 소단부(5)의 결합부위까지 전체적으로 냉각시킬 수 있는 것이다.In addition, in the conventional case, the oil supplied only to the periphery of the piston pin 4 and allowed to be cooled and lubricated is radially injected into the crown portion, so that the crown portion as well as the engagement between the piston pin 4 and the small- It is possible to cool down to the whole area.

상기와 같은 본 발명에 의하면 소단부의 상단으로 형성된 요홈과 밀접하여 결합된 분사부재의 내측으로 오일이 공급되어 고열의 크라운부를 냉각시킬 수 있으며 피스톤과 소단부의 결합부 외주면도 냉각 및 윤활이 가능하게 되므로 피스톤의 과열을 방지하도록 하는 유용한 발명인 것이다.According to the present invention, the oil is supplied to the inside of the injection member closely coupled with the groove formed at the upper end of the small end portion to cool the crown portion of the high temperature, and the outer peripheral surface of the engagement portion of the piston and the small end portion can be cooled and lubricated So that it is a useful invention for preventing overheating of the piston.

Claims (1)

피스톤과 크랭크축을 연결하는 커넥팅로드의 소단부로 오일을 공급하도록 상기 커넥팅 로드의 몸체로 오일통로가 형성된 피스톤 기구에 있어서,An oil passage formed in the body of the connecting rod for supplying oil to a small end of a connecting rod connecting a piston and a crankshaft, 상단이 凸 형상으로 형성되어 중앙으로 오일통로(21)와 요홈(22)이 형성된 소단부(5)와;A small end portion (5) having an upper end formed in a convex shape and having an oil passage (21) and a groove (22) formed at the center; 상기 소단부(5)의 상부로 결합되며 오일통로(21)에 접하도록 凹 형상으로 결합되고 내측으로 분사통로(31)가 형성된 분사부재(3)와;A jet member 3 coupled to an upper portion of the small end portion 5 and concavely joined to the oil passage 21 and having a jetting passage 31 formed therein; 상기 분사부재(3)에 천공되는 다수개의 오일분사공(32);A plurality of oil injection holes 32 formed in the injection member 3; 의 구성을 특징으로 하는 피스톤 냉각구조.Wherein the piston cooling structure comprises:
KR1019960065881A 1996-12-14 1996-12-14 Cooling of piston KR100201613B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019960065881A KR100201613B1 (en) 1996-12-14 1996-12-14 Cooling of piston

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019960065881A KR100201613B1 (en) 1996-12-14 1996-12-14 Cooling of piston

Publications (2)

Publication Number Publication Date
KR19980047390A true KR19980047390A (en) 1998-09-15
KR100201613B1 KR100201613B1 (en) 1999-06-15

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KR1019960065881A KR100201613B1 (en) 1996-12-14 1996-12-14 Cooling of piston

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010066187A (en) * 1999-12-31 2001-07-11 이계안 Connecting rod for vehicle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010066187A (en) * 1999-12-31 2001-07-11 이계안 Connecting rod for vehicle

Also Published As

Publication number Publication date
KR100201613B1 (en) 1999-06-15

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