KR19980012378U - Piston structure of engine - Google Patents
Piston structure of engine Download PDFInfo
- Publication number
- KR19980012378U KR19980012378U KR2019960025923U KR19960025923U KR19980012378U KR 19980012378 U KR19980012378 U KR 19980012378U KR 2019960025923 U KR2019960025923 U KR 2019960025923U KR 19960025923 U KR19960025923 U KR 19960025923U KR 19980012378 U KR19980012378 U KR 19980012378U
- Authority
- KR
- South Korea
- Prior art keywords
- piston
- engine
- crank
- cylinder
- connecting rod
- Prior art date
Links
- 238000002485 combustion reaction Methods 0.000 claims abstract description 15
- 238000004880 explosion Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
Classifications
-
- 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
- F02F3/28—Other pistons with specially-shaped head
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
본 고안은 기관의 동력발생부에서 피스톤의 구조에 관한 것으로서, 측압 및 마찰이 저감되도록 하기 위해, 실린더블록 상부에 연소실과 연통되는 실린더가 형성되고, 상기 실린더블록 하부에 크랭크실이 형성되어, 상기 크랭크실에 회전 가능하게 장착되는 크랭크축의 크랭크핀(42)이 커넥팅로드에 의해 상기 실린더의 내부에 미끄럼 이동이 가능하게 장착되는 피스톤(20)에 연동 가능하게 연결되는 것에 있어서, 상기 피스톤의 상단면이 상기 크랭크축의 회전방향과 상반되는 방향으로 일정 경사지게 형성되도록 하여, 피스톤(20) 상단면에 작용되는 연소압력이 수직방향에 대해 일정각도 경사지게 작용하게 되므로 커넥팅로드의 회전방향과 피스톤(20)에 작용하는 연소압력의 방향이 일치되도록 하는 기관의 피스톤 구조이다.The present invention relates to the structure of the piston in the power generating unit of the engine, in order to reduce the side pressure and friction, the cylinder is formed in communication with the combustion chamber in the upper cylinder block, the crank chamber is formed in the lower cylinder block, The crank pin 42 of the crankshaft rotatably mounted in the crank chamber is operatively connected to the piston 20 mounted to be slidable inside the cylinder by a connecting rod, the upper surface of the piston The crank shaft is formed to be inclined in a direction opposite to the rotational direction of the crankshaft, so that the combustion pressure acting on the upper surface of the piston 20 is inclined at an angle with respect to the vertical direction, so that the rotational direction of the connecting rod and the piston 20 It is the piston structure of the engine which makes the direction of the acting combustion pressure coincide.
Description
일반적으로 기관은 도 1에 도시되는 바와 같이, 실린더블록 상부에 연소실과 연통되는 실린더(10)가 형성되고, 실린더블록 하부에 오일팬과 연통되는 크랭크실이 형성되어, 실린더(10)의 내부에 상단면이 수평면으로 형성되는 피스톤(20)이 미끄럼 이동이 가능하게 장착되고, 크랭크실에 크랭크축(40)이 저어널베어링(41)에 의해 회전 가능하게 장착되며, 크랭크축(40)의 크랭크핀(42)이 커넥팅로드(30)에 의해 피스톤(20) 중심의 피스톤핀(21)에 연동 가능하게 연결되어 있다.In general, as shown in FIG. 1, a cylinder 10 communicating with a combustion chamber is formed at an upper portion of a cylinder block, and a crank chamber communicating with an oil pan is formed at a lower portion of a cylinder block, as illustrated in FIG. 1. The piston 20 having an upper surface formed in a horizontal plane is mounted to be slidable, and the crank shaft 40 is rotatably mounted to the crank chamber by the journal bearing 41, and the crank of the crank shaft 40 is mounted. The pin 42 is connected to the piston pin 21 at the center of the piston 20 by the connecting rod 30 so as to be interlockable.
이와같이 구성되는 기관은 연소실의 연소동작시 발생되는 폭발압력에 의해 피스톤(20)이 실린더(10)의 하부로 미끄럼 이동되게 되고, 함께 연동되는 커넥팅로드(30)가 크랭크핀(42)을 통해 크랭크축(40)을 회전시켜, 연소실에서 발생된 폭발압력이 피스톤(20)에 의해 왕복 운동으로 전환되고, 커넥팅로드(30)와 크랭크축(40)에 의해 회전운동으로 전환되어 출력되도록 한다.In the engine configured as described above, the piston 20 is slid to the lower portion of the cylinder 10 by the explosion pressure generated during the combustion operation of the combustion chamber, and the connecting rod 30 linked together is cranked through the crank pin 42. By rotating the shaft 40, the explosion pressure generated in the combustion chamber is converted into reciprocating motion by the piston 20, and is converted into rotational motion by the connecting rod 30 and the crankshaft 40 so as to be output.
한편, 이러한 기관은 도 2에 도시되는 바와 같이, 연소시 피스톤(20)의 상단면에 일정 연소압력(Fg)이 작용면, 크랭크핀(42)을 따라 회전하는 커넥팅로드(30)에 경사에 따른 가변적인 반력(Fr)이 작용되게 되고, 커넥팅로드(30)가 경사운동을 함에 따라 실린더(10) 내주면을 수직 상하로 이동하는 피스톤(20)에 측압(side force)(Fs)이 작용되게 된다.Meanwhile, as shown in FIG. 2, the engine is inclined to the connecting rod 30 rotating along the crank pin 42 when a constant combustion pressure Fg acts on the upper surface of the piston 20 during combustion. According to the variable reaction force (Fr) is applied, the side force (Fs) is applied to the piston 20 to move the inner circumference of the cylinder 10 vertically up and down as the connecting rod 30 is inclined. do.
이러한 종래 기관은 피스톤의 상단면이 수평하기 때문에 피스톤 상단면에 작용하는 연소압력의 방향과 커넥팅로드의 운동방향이 불일치하므로 피스톤은 실린더블록측으로 부터 측압을 받게 되며, 이를 해소하기 위해 옵셋타입(off-set type)의 피스톤핀이 많이 사용되고 있으나, 이로 인해 피스톤의 운동이 불안정하게 되는 문제점이 있었다.In the conventional engine, since the top surface of the piston is horizontal, the direction of combustion pressure acting on the top surface of the piston and the direction of movement of the connecting rod are inconsistent, so that the piston is subjected to side pressure from the cylinder block side. -set type) piston pins are used a lot, but there was a problem that the movement of the piston becomes unstable.
본 고안은 연소압력이 직접 작용되는 피스톤의 상단면 형상을 개선하여 피스톤에 작용하는 측압을 저감시키도록 하므로 마찰을 저감시키고, 피스톤핀의 구조를 보통화하여 피스톤의 운동이 안정되도록 하는데 그 목적이 있다.The present invention improves the shape of the upper surface of the piston to which the combustion pressure is applied directly to reduce the side pressure acting on the piston, thereby reducing friction and making the piston stable by normalizing the structure of the piston pin. have.
도 1은 일반 기관의 동력발생부를 나타내는 개략 단면도1 is a schematic cross-sectional view showing a power generating portion of a general engine
도 2는 종래 기관의 동력발생부 작동상태를 나타내는 설명도2 is an explanatory diagram showing an operating state of a power generating unit of a conventional engine;
도 3은 본 고안 피스톤 및 작동상태의 설명도3 is an explanatory view of the present invention piston and the operating state
*도면의 주요부분에 대한 부호의 설명** Description of the symbols for the main parts of the drawings *
10 : 실린더20 : 피스톤10: cylinder 20: piston
21 : 피스톤핀41 : 저어널베어링21: piston pin 41: journal bearing
42 : 크랭크핀42: crank pin
먼저, 본 고안의 기관도 도 3에 도시되는 바와 같이, 실린더블록 상부에 연소실과 연통되는 실린더가 형성되고, 실린더블록 하부에 오일팬과 연통되는 크랭크실이 형성되어, 상기 실린더의 내부에 피스톤(20)이 미끄럼 이동이 가능하게 장착되고, 크랭크실에 크랭크축이 저어널베어링(41)에 의해 회전 가능하게 장착되며, 크랭크축의 크랭크핀(42)이 커넥팅로드에 의해 피스톤(20) 중심의 피스톤핀(21)에 연동 가능하게 연결된다.First, as shown in Figure 3, the engine of the present invention, the cylinder is in communication with the combustion chamber is formed in the upper cylinder block, the crank chamber in communication with the oil pan is formed in the lower cylinder block, the piston ( 20) is slidably mounted, the crankshaft is rotatably mounted to the crank chamber by the journal bearing 41, and the crank pin 42 of the crankshaft is the piston in the center of the piston 20 by the connecting rod. It is connected to the pin 21 to be interlocked.
단, 본 고안은 피스톤(20)의 상단면이 크랭크축의 회전방향과 상반되는 방향으로 일정 경사지게 형성됨을 그 기술적 구성상의 기본 특징으로 한다.However, the present invention is characterized in that the top surface of the piston 20 is formed to be inclined in a direction opposite to the direction of rotation of the crankshaft in a basic configuration on the technical configuration.
이와같이 구성되는 본 고안은, 피스톤(20)의 상단면이 일정각도 경사지게 형성되어 연소압력이 경사면에 작용되도록 하므로 피스톤(20) 상단면에 작용되는 압력이 수직방향에 대해 일정각도 경사지게 작용하게 되며, 이로 인해 커넥팅로드의 회전방향과 피스톤(20)에 작용하는 연소압력의 방향이 일치되도록 하여, 피스톤에 작용하는 측압을 상쇄한다.The present invention constituted as described above, the upper surface of the piston 20 is formed to be inclined at a predetermined angle so that the combustion pressure acts on the inclined surface so that the pressure applied to the upper surface of the piston 20 is inclined at a certain angle with respect to the vertical direction, As a result, the rotational direction of the connecting rod and the direction of the combustion pressure acting on the piston 20 are matched to offset the side pressure acting on the piston.
상기와 같이 구성되고 작동되는 본 고안은, 피스톤의 상하운동시 측압이 저감되어 실린더 내주면과의 마찰저항이 줄어들도록 하고, 이로인해 연비가 개선되며, 작동상태가 안정되도록 하는 효과가 있다.The present invention is constructed and operated as described above, the side pressure is reduced during vertical movement of the piston to reduce the frictional resistance with the inner circumferential surface of the cylinder, thereby improving fuel economy, there is an effect to stabilize the operating state.
본 고안은 기관의 동력발생부에서 실린더에 장착되는 피스톤의 구조에 관한 것으로서, 피스톤의 상단면 구조를 개선하여 측압 및 마찰이 저감되도록 하므로 작동상태가 안정되고 연비가 향상되도록 하는데 그 목적이 있다.The present invention relates to the structure of the piston mounted to the cylinder in the engine power generation portion, and improves the structure of the upper surface of the piston to reduce the side pressure and friction, so that the operating state is stable and the fuel efficiency is improved.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019960025923U KR19980012378U (en) | 1996-08-27 | 1996-08-27 | Piston structure of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019960025923U KR19980012378U (en) | 1996-08-27 | 1996-08-27 | Piston structure of engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR19980012378U true KR19980012378U (en) | 1998-05-25 |
Family
ID=53973592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019960025923U KR19980012378U (en) | 1996-08-27 | 1996-08-27 | Piston structure of engine |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR19980012378U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020042886A (en) * | 2000-12-01 | 2002-06-08 | 이계안 | Piston apparatus |
-
1996
- 1996-08-27 KR KR2019960025923U patent/KR19980012378U/en not_active Application Discontinuation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020042886A (en) * | 2000-12-01 | 2002-06-08 | 이계안 | Piston apparatus |
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