JPH02114747U - - Google Patents
Info
- Publication number
- JPH02114747U JPH02114747U JP2277089U JP2277089U JPH02114747U JP H02114747 U JPH02114747 U JP H02114747U JP 2277089 U JP2277089 U JP 2277089U JP 2277089 U JP2277089 U JP 2277089U JP H02114747 U JPH02114747 U JP H02114747U
- Authority
- JP
- Japan
- Prior art keywords
- piston
- hole
- skirt
- internal combustion
- skirt part
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
- 238000002485 combustion reaction Methods 0.000 claims description 8
Landscapes
- Pistons, Piston Rings, And Cylinders (AREA)
Description
第１〜３図はこの考案の実施例を示し、第１図
は内燃機関用ピストンの半断面底面図、第２図は
内燃機関用ピストンの概略断面図、第３図はこの
考案の実施例における不都合な一例を示す内燃機
関用ピストンのオイル穴部の要部拡大断面図であ
る。第４，５図はこの考案の従来技術を示し、第
４図は内燃機関用ピストンの概略断面図、第５図
は内燃機関用ピストンの半断面底面図である。
図において、２は内燃機関用ピストン、４はリ
ング溝部、４ａは上面、６はスカート部、８−１
，８−２，８−３はリング溝、１０はピストンピ
ン用孔部、１０−１は第１孔部、１０−２は第２
孔部、１２はオイル穴部、１２−１は第１オイル
穴部、１２−２は第２オイル穴部、１４−１は第
１溝部、１４−２は第２溝部、１６はリブ部であ
る。
Figures 1 to 3 show an embodiment of this invention. Figure 1 is a half-sectional bottom view of a piston for an internal combustion engine, Figure 2 is a schematic sectional view of a piston for an internal combustion engine, and Figure 3 is an embodiment of this invention. FIG. 2 is an enlarged cross-sectional view of a main part of an oil hole portion of a piston for an internal combustion engine, showing an example of a disadvantageous aspect of the present invention. 4 and 5 show the prior art of this invention, FIG. 4 is a schematic sectional view of a piston for an internal combustion engine, and FIG. 5 is a bottom view in half section of the piston for an internal combustion engine. In the figure, 2 is a piston for an internal combustion engine, 4 is a ring groove, 4a is an upper surface, 6 is a skirt portion, and 8-1
, 8-2, 8-3 are ring grooves, 10 is a hole for a piston pin, 10-1 is a first hole, and 10-2 is a second hole.
The hole portion, 12 is an oil hole portion, 12-1 is a first oil hole portion, 12-2 is a second oil hole portion, 14-1 is a first groove portion, 14-2 is a second groove portion, and 16 is a rib portion. be.
Claims (1)
ート部を有する有蓋筒状の内燃機関用ピストンに
おいて、前記スカート部に半径方向に貫通するピ
ストンピン用孔部を形成し、前記ピストンのスカ
ート部とピストン外周間にスカート部から前記リ
ング溝部上面近傍部位まで且つ前記孔部近傍部位
まで長手方向に延びるオイル穴部を形成するとと
もにこのオイル穴部と前記孔部とを連通すべく孔
部内周面に溝部を形成したことを特徴とする内燃
機関用ピストン。 In a piston for an internal combustion engine that has a ring groove in an upper part and a skirt part in a lower part, a piston pin hole is formed in the skirt part and penetrates in the radial direction, and the piston pin hole part is formed in the skirt part and the piston outer periphery is formed between the skirt part and the outer periphery of the piston. an oil hole extending in the longitudinal direction from the skirt portion to a portion near the top surface of the ring groove and to a portion near the hole; and a groove is formed on the inner circumferential surface of the hole to communicate the oil hole with the hole. A piston for internal combustion engines that is characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2277089U JPH02114747U (en) | 1989-02-28 | 1989-02-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2277089U JPH02114747U (en) | 1989-02-28 | 1989-02-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02114747U true JPH02114747U (en) | 1990-09-13 |
Family
ID=31241180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2277089U Pending JPH02114747U (en) | 1989-02-28 | 1989-02-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02114747U (en) |
-
1989
- 1989-02-28 JP JP2277089U patent/JPH02114747U/ja active Pending