JPS63164533U - - Google Patents
Info
- Publication number
- JPS63164533U JPS63164533U JP5815387U JP5815387U JPS63164533U JP S63164533 U JPS63164533 U JP S63164533U JP 5815387 U JP5815387 U JP 5815387U JP 5815387 U JP5815387 U JP 5815387U JP S63164533 U JPS63164533 U JP S63164533U
- Authority
- JP
- Japan
- Prior art keywords
- piston
- pin
- inner piston
- compression ratio
- engine
- 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
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 2
- 238000002485 combustion reaction Methods 0.000 claims 1
- 238000007599 discharging Methods 0.000 claims 1
- 230000000903 blocking effect Effects 0.000 description 2
Landscapes
- Output Control And Ontrol Of Special Type Engine (AREA)
Description
第１図はこの考案に係る圧縮比可変装置の第１
実施例を示す全体構成図、第２図はこの実施例の
要部を一部断面して示す斜視図、第３図は第１図
のａ矢視図、第４図Ａはこの考案の第２実施例を
示す要部断面図、同図Ｂは同図Ａのｂ矢視図、第
５図Ａはこの考案の第３実施例を示す要部断面図
、同図Ｂは同図Ａのｃ矢視図、第６図Ａはこの考
案の第４実施例を示す要部断面図、同図Ｂは同図
Ａのｄ矢視図、第７図は従来の圧縮比可変装置を
示す全体構成図である。
２１…アウタピストン、２１ａ…冠部下面、２
３…ピストンピン、２３ａ，２３ｂ…両端部、２
４…コンロツド、２９…インナピストン、２９ａ
…上面、３０…ピンボス部、３０ａ…ピン孔、３
１…上部液室、３３…油圧回路、４６…係合突部
（阻止手段）、４８…係止孔（阻止手段）。
Figure 1 shows the first variable compression ratio device according to this invention.
FIG. 2 is a partially sectional perspective view of the main parts of this embodiment, FIG. 3 is a view taken in the direction of arrow a in FIG. 1, and FIG. 5A is a sectional view of the main part showing the third embodiment of this invention; FIG. 5B is a sectional view of the main part of FIG. Fig. 6A is a sectional view of the main part showing the fourth embodiment of this invention, Fig. 6B is a view taken from Fig. d in Fig. A, and Fig. 7 is an overall view of a conventional variable compression ratio device. FIG. 21... Outer piston, 21a... Lower surface of crown, 2
3... Piston pin, 23a, 23b... Both ends, 2
4...Conn rod, 29...Inner piston, 29a
...Top surface, 30...Pin boss part, 30a...Pin hole, 3
DESCRIPTION OF SYMBOLS 1... Upper liquid chamber, 33... Hydraulic circuit, 46... Engagement protrusion (blocking means), 48... Locking hole (blocking means).
Claims (1)
に、ピンボス部のピン孔を介してインナピストン
を連結すると共に、該インナピストンの外周にア
ウタピストンを軸方向へ摺動可能に被嵌し、かつ
該アウタピストンの冠部下面と上記インナピスト
ンの上面との間に形成された上部液室に、所定の
油圧回路を介して圧油を給排して機関の圧縮比を
変える装置において、上記ピストンピンと上記イ
ンナピストンとの相対回転を阻止する手段を設け
たことを特徴とする内燃機関の圧縮比可変装置。 An inner piston is connected to both ends of a piston pin connected to a conrod through a pin hole in a pin boss part, and an outer piston is fitted on the outer periphery of the inner piston so as to be slidable in the axial direction. In a device that changes the compression ratio of an engine by supplying and discharging pressure oil to and from an upper liquid chamber formed between the lower surface of the crown of the piston and the upper surface of the inner piston via a predetermined hydraulic circuit, the piston pin and the 1. A variable compression ratio device for an internal combustion engine, comprising means for preventing relative rotation with an inner piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5815387U JPS63164533U (en) | 1987-04-16 | 1987-04-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5815387U JPS63164533U (en) | 1987-04-16 | 1987-04-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63164533U true JPS63164533U (en) | 1988-10-26 |
Family
ID=30888486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5815387U Pending JPS63164533U (en) | 1987-04-16 | 1987-04-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63164533U (en) |
-
1987
- 1987-04-16 JP JP5815387U patent/JPS63164533U/ja active Pending