JPH0313440U - - Google Patents
Info
- Publication number
- JPH0313440U JPH0313440U JP7475989U JP7475989U JPH0313440U JP H0313440 U JPH0313440 U JP H0313440U JP 7475989 U JP7475989 U JP 7475989U JP 7475989 U JP7475989 U JP 7475989U JP H0313440 U JPH0313440 U JP H0313440U
- Authority
- JP
- Japan
- Prior art keywords
- eccentric bearing
- flange
- valve
- crankshaft
- fits
- 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
- 239000003921 oil Substances 0.000 claims 3
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 239000010687 lubricating oil Substances 0.000 claims 1
Landscapes
- Output Control And Ontrol Of Special Type Engine (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Description
第１図はこの考案の一実施例を示す一部破断側
面図、第２図は偏心ベアリングの分解斜視図、第
３図は各死点における低油圧時の偏心ベアリング
の位置と姿勢を説明する図、第４図ａ，ｂはそれ
ぞれバルブを示す断面図、同図ｃは同右側面図で
ある。
２……クランク・ピン、３……クランク・ジヤ
ーナル、５……偏心ベアリング、７……大端部、
９……バルブ、９２……係合ピン、５１１……係
合孔、５０１ｍ……内径部の回転中心線、５０２
ｍ……外径部の回転中心線。
Fig. 1 is a partially cutaway side view showing an embodiment of this invention, Fig. 2 is an exploded perspective view of the eccentric bearing, and Fig. 3 explains the position and attitude of the eccentric bearing at low oil pressure at each dead center. 4A and 4B are sectional views showing the valve, and FIG. 4C is a right side view thereof. 2...Crank pin, 3...Crank journal, 5...Eccentric bearing, 7...Big end,
9...Valve, 92...Engagement pin, 511...Engagement hole, 501m...Rotation center line of inner diameter portion, 502
m...Rotation center line of outer diameter part.
Claims (1)
ランク・ピンとの間に介装されていて前記大端部
に嵌合される外径部と前記クランク・ピンに嵌合
される内径部とが互いに偏心させられたブツシユ
部およびこのブツシユ部に一体に形成され前記大
端部の側面に沿つて延在し、かつ前記内径部の回
転中心線を挟んで前記外径部の回転中心線の反対
側に係合孔を穿設したフランジ部を有する偏心ベ
アリングと、クランク・シヤフトとクランク・ジ
ヤーナルの中心に穿設され潤滑油が流れる油通路
に強制的に嵌入されていて、油圧が低いとき突出
して前記フランジ部の係合孔に係合し、油圧が高
いときフランジ部が退避して前記係合孔との係合
を解除されるピンを有するバルブとを備えた可変
圧縮比エンジン。 It is interposed between the big end of the conrod and the crank pin of the crankshaft, and the outer diameter part that fits into the big end and the inner diameter part that fits into the crank pin are eccentric to each other. a bushing portion formed integrally with the bushing portion, extending along the side surface of the large end portion, and engaging with the opposite side of the rotation center line of the outer diameter portion across the rotation center line of the inner diameter portion; The eccentric bearing has a flange portion with a matching hole, and the eccentric bearing is forcibly fitted into an oil passage drilled in the center of the crankshaft and crank journal through which lubricating oil flows, and when the oil pressure is low, the eccentric bearing protrudes and the flange A variable compression ratio engine, comprising: a valve having a pin that engages with an engagement hole of the valve, and whose flange part retracts and disengages from the engagement hole when oil pressure is high.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7475989U JPH0721888Y2 (en) | 1989-06-26 | 1989-06-26 | Variable compression ratio engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7475989U JPH0721888Y2 (en) | 1989-06-26 | 1989-06-26 | Variable compression ratio engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0313440U true JPH0313440U (en) | 1991-02-12 |
| JPH0721888Y2 JPH0721888Y2 (en) | 1995-05-17 |
Family
ID=31614735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7475989U Expired - Lifetime JPH0721888Y2 (en) | 1989-06-26 | 1989-06-26 | Variable compression ratio engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0721888Y2 (en) |
-
1989
- 1989-06-26 JP JP7475989U patent/JPH0721888Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0721888Y2 (en) | 1995-05-17 |