JPS6446447U - - Google Patents
Info
- Publication number
- JPS6446447U JPS6446447U JP14072587U JP14072587U JPS6446447U JP S6446447 U JPS6446447 U JP S6446447U JP 14072587 U JP14072587 U JP 14072587U JP 14072587 U JP14072587 U JP 14072587U JP S6446447 U JPS6446447 U JP S6446447U
- Authority
- JP
- Japan
- Prior art keywords
- piston
- fluid chamber
- oil passage
- chamber
- inner piston
- 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.)
- Granted
Links
- 239000007788 liquid Substances 0.000 claims description 7
- 239000012530 fluid Substances 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 238000002485 combustion reaction Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 1
Description
第１図はこの考案の第１実施例における高圧縮
比状態を示す要部断面図、第２図はこの実施例の
低圧縮比状態を示す要部断面図、第３図はこの考
案の第２実施例における高圧縮比状態を示す要部
断面図、第４図は従来の圧縮比可変装置を示す全
体構成図、第５図は従来装置の一部断面図である
。
２１……アウタピストン、２３……ピストンピ
ン、２４……コンロツド、２５……作動液室、３
２……インナピストン、３４……上部液室、３５
……下部液室、３６……油圧回路、４０……第１
油通路、４１……第２油通路。
FIG. 1 is a cross-sectional view of the main part showing a high compression ratio state in the first embodiment of this invention, FIG. 2 is a cross-sectional view of the main part showing a low compression ratio state of this embodiment, and FIG. FIG. 4 is an overall configuration diagram showing a conventional variable compression ratio device, and FIG. 5 is a partial sectional view of the conventional device. 21...Outer piston, 23...Piston pin, 24...Conrod, 25...Hydraulic fluid chamber, 3
2... Inner piston, 34... Upper liquid chamber, 35
... lower liquid chamber, 36 ... hydraulic circuit, 40 ... first
Oil passage, 41...second oil passage.
Claims (1)
インナピストンと、該インナピストンの外周に軸
方向へ摺動可能に被嵌したアウタピストンと、該
アウタピストンと上記インナピストンとの間に形
成された上部液室及び下部液室とを有し、該各上
下部液室に作動液室及び油圧回路を介して油圧を
供給し、上記アウタピストンをインナピストンに
対して上下に相対移動させるようにした圧縮比可
変装置において、上記油圧回路は、上記作動液室
から上記下部液室に圧油を供給する第１油通路と
、上記アウタピストンに加わる燃焼圧力に応じて
上記上部液室内の圧油を上記下部液室に供給する
第２油通路とを備えたことを特徴とする内燃機関
の圧縮比可変装置。 An inner piston connected to the conrod via a piston pin, an outer piston fitted onto the outer periphery of the inner piston so as to be slidable in the axial direction, and an upper liquid formed between the outer piston and the inner piston. and a lower liquid chamber, and hydraulic pressure is supplied to each of the upper and lower liquid chambers via a working liquid chamber and a hydraulic circuit to move the outer piston vertically relative to the inner piston. In the variable device, the hydraulic circuit includes a first oil passage that supplies pressure oil from the working fluid chamber to the lower fluid chamber, and a first oil passage that supplies pressure oil in the upper fluid chamber to the lower fluid chamber in accordance with combustion pressure applied to the outer piston. A variable compression ratio device for an internal combustion engine, comprising a second oil passage supplying a liquid chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14072587U JPH063167Y2 (en) | 1987-09-14 | 1987-09-14 | Variable compression ratio device for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14072587U JPH063167Y2 (en) | 1987-09-14 | 1987-09-14 | Variable compression ratio device for internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6446447U true JPS6446447U (en) | 1989-03-22 |
| JPH063167Y2 JPH063167Y2 (en) | 1994-01-26 |
Family
ID=31405158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14072587U Expired - Lifetime JPH063167Y2 (en) | 1987-09-14 | 1987-09-14 | Variable compression ratio device for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH063167Y2 (en) |
-
1987
- 1987-09-14 JP JP14072587U patent/JPH063167Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH063167Y2 (en) | 1994-01-26 |