JPH0444450U - - Google Patents
Info
- Publication number
- JPH0444450U JPH0444450U JP8763890U JP8763890U JPH0444450U JP H0444450 U JPH0444450 U JP H0444450U JP 8763890 U JP8763890 U JP 8763890U JP 8763890 U JP8763890 U JP 8763890U JP H0444450 U JPH0444450 U JP H0444450U
- Authority
- JP
- Japan
- Prior art keywords
- piston
- pin
- oil passage
- radial hole
- compression ratio
- 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 5
- 238000007906 compression Methods 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims 2
- 238000002485 combustion reaction Methods 0.000 claims 1
Landscapes
- Output Control And Ontrol Of Special Type Engine (AREA)
Description
第１図は本考案に係る圧縮比可変装置の実施例
に供されるオイルシールを示す部分断面図、第２
図は同オイルシールの上側半分を示す側面図、第
３図は本実施例における高圧縮比状態を示す縦断
面図、第４図は低圧縮比状態を示す縦断面図であ
る。
１……ピストンピン、２……コネクテイングロ
ツド、３……インナピストン、５……アウタピス
トン、６……上部油室、７……下部油室、１０…
…中空部、１３……半径方向孔、１５……供給通
路（油通路）、２５……オイルシール（シール部
材）。
FIG. 1 is a partial sectional view showing an oil seal used in an embodiment of the variable compression ratio device according to the present invention;
3 is a side view showing the upper half of the oil seal, FIG. 3 is a longitudinal sectional view showing a high compression ratio state in this embodiment, and FIG. 4 is a longitudinal sectional view showing a low compression ratio state. 1... Piston pin, 2... Connecting rod, 3... Inner piston, 5... Outer piston, 6... Upper oil chamber, 7... Lower oil chamber, 10...
... hollow part, 13 ... radial hole, 15 ... supply passage (oil passage), 25 ... oil seal (sealing member).
Claims (1)
連結されたインナピストンと、該インナピストン
に上下動可能に被嵌したアウタピストンと、該ア
ウタピストンの上下動に伴いインナ及びアウタピ
ストンとの間に夫々形成される上部油室及び下部
油室と、機関運転状態に応じて前記ピストンピン
の中空部内に流入した油圧をピストンピンの半径
方向孔から前記インナピストン内部の油通路を介
して前記上部油室内に供給する油圧回路とを備え
た圧縮比可変装置において、前記ピストンピンの
外周面に開口した前記半径方向の孔縁と、前記イ
ンナピストンのピン孔内周面に前記半径方向孔に
対向して開口した油通路の孔縁との間にシール部
材を介装し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 a connecting rod via a piston pin, an outer piston fitted into the inner piston so as to be able to move up and down, and a piston formed between the inner and outer pistons as the outer piston moves up and down. The hydraulic pressure that has flowed into the hollow part of the piston pin is transferred from the radial hole of the piston pin into the upper oil chamber through the oil passage inside the inner piston, depending on the engine operating state. a compression ratio variable device comprising: a radial hole edge opened on the outer peripheral surface of the piston pin; and an opening opposite to the radial hole on the inner peripheral surface of the pin hole of the inner piston; A variable compression ratio device for an internal combustion engine, characterized in that a sealing member is interposed between the oil passage and the hole edge of the oil passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8763890U JPH0444450U (en) | 1990-08-22 | 1990-08-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8763890U JPH0444450U (en) | 1990-08-22 | 1990-08-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0444450U true JPH0444450U (en) | 1992-04-15 |
Family
ID=31820156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8763890U Pending JPH0444450U (en) | 1990-08-22 | 1990-08-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0444450U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019157846A (en) * | 2018-03-16 | 2019-09-19 | 株式会社ディーゼルユナイテッド | engine |
| JP2019157847A (en) * | 2018-03-16 | 2019-09-19 | 株式会社ディーゼルユナイテッド | engine |
| WO2019177109A1 (en) * | 2018-03-16 | 2019-09-19 | 株式会社Ihi | Engine |
-
1990
- 1990-08-22 JP JP8763890U patent/JPH0444450U/ja active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019157846A (en) * | 2018-03-16 | 2019-09-19 | 株式会社ディーゼルユナイテッド | engine |
| JP2019157847A (en) * | 2018-03-16 | 2019-09-19 | 株式会社ディーゼルユナイテッド | engine |
| WO2019177109A1 (en) * | 2018-03-16 | 2019-09-19 | 株式会社Ihi | Engine |
| KR20200112994A (en) * | 2018-03-16 | 2020-10-05 | 가부시키가이샤 아이에이치아이 | engine |
| CN111886404A (en) * | 2018-03-16 | 2020-11-03 | 株式会社 Ihi | Engine |
| US11174826B2 (en) | 2018-03-16 | 2021-11-16 | Ihi Corporation | Engine |
| CN111886404B (en) * | 2018-03-16 | 2022-04-05 | 株式会社 Ihi | Engine |
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