SU1437546A1 - Piston of internal combustion engine - Google Patents
Piston of internal combustion engine Download PDFInfo
- Publication number
- SU1437546A1 SU1437546A1 SU874183703A SU4183703A SU1437546A1 SU 1437546 A1 SU1437546 A1 SU 1437546A1 SU 874183703 A SU874183703 A SU 874183703A SU 4183703 A SU4183703 A SU 4183703A SU 1437546 A1 SU1437546 A1 SU 1437546A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- piston
- axis
- combustion chamber
- cavity
- cross
- Prior art date
Links
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
- F02F3/16—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)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
Изобретение позвол ет повысить надежность поршн путем выравнивани градиента т-р в зоне поршневых канавок по окружности поршн . Кольцева полость (КП) 6 дл масл ного охлаждени расположена зксцентрично прод дольной оси 2 камеры 3 сгорани и наклонена к оси 4 поршн под углом 12-35 , Ось 5 КП смещена в сторону оси 4, причем эксцентриситет оси 5 относительно оси 4 меньше эксцентриситета относительно оси 2. Поперечное сечение КП имеет клинообразную форму с углом клина, равным , и образовано двум сферическими поверхност ми с радиусами, проход щими из разных центров. Центр радиуса внутренней поверхности совпадает с центром радиуса камеры сгорани , а центр радиуса внешней поверхности расположен на оси 5. Поперечное сечение несимметрично оси 4, причем больша площадь поперечного сечени расположена со стороны смещени камеры сгорани . Такое вьшолнение приводит к перераспределению т-р поршн . 3 з.п, ф-лы, 2 ил. с S О) сThe invention makes it possible to increase the reliability of the piston by aligning the gradient t-p in the area of the piston grooves around the circumference of the piston. The annular cavity (KP) 6 for oil cooling is located eccentric to the longitudinal axis 2 of the combustion chamber 3 and tilted to the axis 4 of the piston at an angle of 12-35, the axis 5 of the gearbox is displaced towards the axis 4, and the eccentricity of axis 5 relative to axis 4 is less than the eccentricity relative to axes 2. The cross section of the CS has a wedge shape with a wedge angle equal to and is formed by two spherical surfaces with radii extending from different centers. The center of the radius of the inner surface coincides with the center of the radius of the combustion chamber, and the center of the radius of the outer surface is located on axis 5. The cross section is asymmetrical to axis 4, with a large cross-sectional area located on the side of displacement of the combustion chamber. Such an implementation leads to the redistribution of the t-p piston. 3 з.п, ф-л, 2 Il. with s o) with
Description
4four
СОWITH
ОдOd
Изобретение относитс к машиностроению , а именно k двигателестро- ению, и может быть использовано л двигател х внутреннего сгорани .The invention relates to mechanical engineering, namely, k engine propulsion, and l internal combustion engines can be used.
Цель изобретени - повьтение надежности поршн путем выравнивани градиента температур в зоне поршневых канавок по окружности поршн .The purpose of the invention is to increase the reliability of the piston by leveling the temperature gradient in the area of the piston grooves around the circumference of the piston.
Па фиг.1 показан поршень со смещенной камерой сгорани и кольцевой полостью охлаждени ; на фиг.2 - поршень со сферической формой камеры сгорани , смещенной относительно оси поршн , и полостью охлаждени , образованной сферическими поверхност ми с несимметричным сечением полости охлаждени .PA of Fig. 1 shows a piston with an offset combustion chamber and an annular cooling cavity; Fig. 2 shows a piston with a spherical shape of a combustion chamber displaced relative to the axis of the piston and a cooling cavity formed by spherical surfaces with an asymmetrical section of the cooling cavity.
В поршне 1 ось 2 камеры 3 сгорани смещена относительно вертикальной оси 4 поршн 1. Ось 5 кольцевой .полости 6 охлаждени смещена относительно оси 4 поршн 1 и оси 2 камеры 3 сгорани . Ось 7 поперечного сечени полости б охлаждени наклонена к оси 4 поршн 1 под углом d- 12-35. Поперечное сечение полости ё охлаждени имеет клинообразную форму с углом клина, равным 10-30°.In the piston 1, the axis 2 of the combustion chamber 3 is displaced relative to the vertical axis 4 of the piston 1. The axis 5 of the annular cooling cavity 6 is displaced relative to the axis 4 of the piston 1 and the axis 2 of the combustion chamber 3. The axis 7 of the cross section of the cooling cavity b is inclined to the axis 4 of the piston 1 at an angle d of 12-35. The cross-section of the cooling cavity has a wedge-shaped shape with a wedge angle of 10-30 °.
При сферической камере 3 сгорани полость охлаждени образована двум сферическими поверхност ми. Радиус R внутренней поверхности полости 6 охлаждени проходиТ из центра радиуса камеры 3 сгорани , радиус Rл.внешней поверхности смещей и вьшолнен из другого цб :нтра таким .образом, что ось 5 кольцевой .полости 6 охлаждени смещена относительно осей 2 и 4.With the spherical combustion chamber 3, the cooling cavity is formed by two spherical surfaces. The radius R of the inner surface of the cooling cavity 6 passes from the center of the radius of the combustion chamber 3, the radius Rl of the outer surface of the displacements and is made from another cylinder: the core in such a way that the axis 5 of the cooling cavity 6 is offset relative to the axes 2 and 4.
Поршень работает следующим образом . The piston works as follows.
Исследовани проводились на дизеле Д144, Поршень форсированного ди10The studies were carried out on diesel engine D144, the piston forced di10
1515
2020
2525
30thirty
лаждени со стороны, противоположной смещению камеры сгорани , на 6 мм и выполнение ее в виде наклонного клин приводит к перераспределению темпера тур поршн , вследствие чего температура соответственно равна и ,201 С, т.е. перепад температур составл ет . Таким образом, наблюда етс уменьшение перепада температур в два раза.Lying on the side opposite to the displacement of the combustion chamber by 6 mm and performing it in the form of an inclined wedge leads to a redistribution of the piston temperatures, as a result of which the temperature is, respectively, and 201 C, i.e. the temperature difference is. Thus, a decrease in temperature difference of two times is observed.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU874183703A SU1437546A1 (en) | 1987-01-22 | 1987-01-22 | Piston of internal combustion engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU874183703A SU1437546A1 (en) | 1987-01-22 | 1987-01-22 | Piston of internal combustion engine |
Publications (1)
Publication Number | Publication Date |
---|---|
SU1437546A1 true SU1437546A1 (en) | 1988-11-15 |
Family
ID=21281393
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU874183703A SU1437546A1 (en) | 1987-01-22 | 1987-01-22 | Piston of internal combustion engine |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU1437546A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107989712A (en) * | 2017-12-27 | 2018-05-04 | 广西玉柴机器股份有限公司 | Diesel engine piston structure |
-
1987
- 1987-01-22 SU SU874183703A patent/SU1437546A1/en active
Non-Patent Citations (1)
Title |
---|
Патент DE № 2141054, кл. F 02 F 3/18, опублик. 1976. * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107989712A (en) * | 2017-12-27 | 2018-05-04 | 广西玉柴机器股份有限公司 | Diesel engine piston structure |
CN107989712B (en) * | 2017-12-27 | 2019-12-06 | 广西玉柴机器股份有限公司 | Piston structure of diesel engine |
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