JPS64329A - Compression ratio variable device for internal combustion engine - Google Patents
Compression ratio variable device for internal combustion engineInfo
- Publication number
- JPS64329A JPS64329A JP15574287A JP15574287A JPS64329A JP S64329 A JPS64329 A JP S64329A JP 15574287 A JP15574287 A JP 15574287A JP 15574287 A JP15574287 A JP 15574287A JP S64329 A JPS64329 A JP S64329A
- Authority
- JP
- Japan
- Prior art keywords
- piston
- liquid chamber
- compression ratio
- pressure
- fitted
- 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
- 230000006835 compression Effects 0.000 title abstract 3
- 238000007906 compression Methods 0.000 title abstract 3
- 238000002485 combustion reaction Methods 0.000 title abstract 2
- 239000007788 liquid Substances 0.000 abstract 5
- 230000004043 responsiveness Effects 0.000 abstract 1
Landscapes
- Output Control And Ontrol Of Special Type Engine (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
PURPOSE: To improve the extent of responsiveness to variable control from a high compression ratio state to the low compression ratio by making pressure oin of an upper liquid chamber in a piston speedily dischargeable at a time when high pressure combustion pressure acts on top of the outer piston externally fitted in an inner piston where a connecting rod is connected.
CONSTITUTION: An inner piston 29, where a connecting rod 24 is connected, is fitted in the outer piston of 21 screwed with an annulus 22 on the lower inner circumference via a piston pin 23. And, with upward movement of this outer piston 21, an upper liquid chamber 31 is formed in space between the said piston 21 and the inner piston 29, and also with the downward movement, a lower liquid chamber is made so s to be formed in space between the annulus 22 and the inner piston 29. In the piston pin 23, there is fitted with a spool valve 26 which is slidden in an working liquid chamber 25 in the inner part, whereby a feed passage 35 and a discharge passage 36 are made so as to be selectable, and this spool valve 26 is made so as to be moved in an opening direction of the discharge passage 36 according to hydraulic pressure of the upper liquid chamber 31 to be transmitted through a pressure passage 37.
COPYRIGHT: (C)1989,JPO&Japio
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15574287A JPH0826793B2 (en) | 1987-06-23 | 1987-06-23 | Variable compression ratio device for internal combustion engine |
| US07/208,312 US4934347A (en) | 1987-06-18 | 1988-06-15 | Variable compression piston arrangement for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15574287A JPH0826793B2 (en) | 1987-06-23 | 1987-06-23 | Variable compression ratio device for internal combustion engine |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JPH01329A JPH01329A (en) | 1989-01-05 |
| JPS64329A true JPS64329A (en) | 1989-01-05 |
| JPH0826793B2 JPH0826793B2 (en) | 1996-03-21 |
Family
ID=15612441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15574287A Expired - Lifetime JPH0826793B2 (en) | 1987-06-18 | 1987-06-23 | Variable compression ratio device for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0826793B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4587313A (en) * | 1984-11-20 | 1986-05-06 | Hitachi Chemical Company, Ltd. | Radiation curable pressure-sensitive adhesive composition |
| US4832318A (en) * | 1988-03-10 | 1989-05-23 | John Wang | Lifting telescoping tube |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2660453B1 (en) * | 2010-12-27 | 2017-08-16 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Piston |
-
1987
- 1987-06-23 JP JP15574287A patent/JPH0826793B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4587313A (en) * | 1984-11-20 | 1986-05-06 | Hitachi Chemical Company, Ltd. | Radiation curable pressure-sensitive adhesive composition |
| US4832318A (en) * | 1988-03-10 | 1989-05-23 | John Wang | Lifting telescoping tube |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0826793B2 (en) | 1996-03-21 |
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