JPS6367635U - - Google Patents
Info
- Publication number
- JPS6367635U JPS6367635U JP16086686U JP16086686U JPS6367635U JP S6367635 U JPS6367635 U JP S6367635U JP 16086686 U JP16086686 U JP 16086686U JP 16086686 U JP16086686 U JP 16086686U JP S6367635 U JPS6367635 U JP S6367635U
- Authority
- JP
- Japan
- Prior art keywords
- lock pin
- oil
- hole
- oil groove
- bearing
- 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 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Output Control And Ontrol Of Special Type Engine (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Description
第１図のイおよびロは本考案の一実施例に係る
可変圧縮比機構の油圧通路におけるクランクピン
軸受部とクランクジヤーナル軸受部の油溝の連通
状態を示す断面図、第２図は第１図のクランクシ
ヤフト近傍のオイル通路の斜視図、第３図は第１
図の可変圧縮比機構におけるクランクシヤフト内
の油孔と各油溝との連通関係を示した関係図、第
４図は従来の可変圧縮比機構の全体断面図、第５
図は第４図のＶ―Ｖ線に沿う断面図、である。
２１…ピストン、２３…ピストンピン、２４…
コネクテイングロツド、２５…クランクシヤフト
、２６…偏心ベアリング、２７…ロツクピン係合
孔、２８…ロツクピン、３２，３３，３８，３９
…油溝、３４…油孔、３５…クランクピン軸受部
、３６…クランクジヤーナル軸受部、Ａ１，Ａ２
…油溝と油孔との連通時期、Ｐ，Ｑ…連通開始点
。
1 and 2 are cross-sectional views showing the state of communication between the oil grooves of the crank pin bearing and the crank journal bearing in the hydraulic passage of a variable compression ratio mechanism according to an embodiment of the present invention, and FIG. Figure 3 is a perspective view of the oil passage near the crankshaft.
A relationship diagram showing the communication relationship between the oil hole in the crankshaft and each oil groove in the variable compression ratio mechanism shown in the figure, Figure 4 is an overall sectional view of the conventional variable compression ratio mechanism, and Figure 5
The figure is a sectional view taken along the line VV in FIG. 4. 21... Piston, 23... Piston pin, 24...
Connecting rod, 25... Crankshaft, 26... Eccentric bearing, 27... Lock pin engagement hole, 28... Lock pin, 32, 33, 38, 39
...Oil groove, 34...Oil hole, 35...Crank pin bearing part, 36...Crank journal bearing part, A 1 , A 2
...Time of communication between oil groove and oil hole, P, Q...Communication start point.
Claims (1)
回転可能に偏心ベアリングを介装し、該偏心ベア
リングにロツクピン係合孔を設けるとともに、コ
ネクテイングロツド側にロツクピン係合孔に出入
りするロツクピンを設け、前記コネクテイングロ
ツドのクランクピン軸受部の周上に形成された油
溝とクランクジヤーナル軸受部の周上に形成され
た油溝とを、クランクシヤフト内に形成された油
孔を介して連通可能とし、前記油孔および油溝を
介して前記ロツクピンに油圧をかけることにより
ロツクピンをロツクピン係合孔に係合または離脱
させ偏心ベアリングの回転をロツクまたはアンロ
ツクさせるようにした可変圧縮比機構の油圧通路
において、前記クランクジヤーナル軸受部側の油
溝と前記油孔との連通開始時期を、前記クランク
ピン軸受側の油溝と前記油孔との連通開始時期よ
りも先行させたことを特徴とする可変圧接比機構
の油圧通路。 An eccentric bearing is rotatably interposed between the piston pin and the connecting rod, a lock pin engaging hole is provided in the eccentric bearing, and a lock pin that goes in and out of the lock pin engaging hole is provided on the connecting rod side. An oil groove formed on the periphery of the crank pin bearing of the connecting rod and an oil groove formed on the periphery of the crank journal bearing can be communicated through an oil hole formed in the crankshaft. In the hydraulic passage of the variable compression ratio mechanism, the lock pin is engaged with or disengaged from the lock pin engagement hole by applying hydraulic pressure to the lock pin through the oil hole and the oil groove to lock or unlock the rotation of the eccentric bearing. , the variable pressure welding is characterized in that the timing at which the oil groove on the crank journal bearing side starts communicating with the oil hole is made earlier than the timing at which communication starts between the oil groove on the crank pin bearing side and the oil hole. Hydraulic passage of ratio mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16086686U JPH048274Y2 (en) | 1986-10-22 | 1986-10-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16086686U JPH048274Y2 (en) | 1986-10-22 | 1986-10-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6367635U true JPS6367635U (en) | 1988-05-07 |
| JPH048274Y2 JPH048274Y2 (en) | 1992-03-03 |
Family
ID=31086649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16086686U Expired JPH048274Y2 (en) | 1986-10-22 | 1986-10-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH048274Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05280382A (en) * | 1992-03-30 | 1993-10-26 | Mitsubishi Automob Eng Co Ltd | Internal combustion engine compression ratio control device |
-
1986
- 1986-10-22 JP JP16086686U patent/JPH048274Y2/ja not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05280382A (en) * | 1992-03-30 | 1993-10-26 | Mitsubishi Automob Eng Co Ltd | Internal combustion engine compression ratio control device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH048274Y2 (en) | 1992-03-03 |