JPS6363558U - - Google Patents
Info
- Publication number
- JPS6363558U JPS6363558U JP15827586U JP15827586U JPS6363558U JP S6363558 U JPS6363558 U JP S6363558U JP 15827586 U JP15827586 U JP 15827586U JP 15827586 U JP15827586 U JP 15827586U JP S6363558 U JPS6363558 U JP S6363558U
- Authority
- JP
- Japan
- Prior art keywords
- piston
- compression ratio
- circumferential surface
- inner piston
- communication hole
- 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 4
- 238000007906 compression Methods 0.000 claims description 4
- 238000002485 combustion reaction Methods 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 claims 1
Landscapes
- Output Control And Ontrol Of Special Type Engine (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Description
添付図面はこの考案の一実施例に係わり、第1
図は低圧縮比でのピストン断面図、第2図は高圧
縮比でのピストン断面図、第3図は外側ピストン
の正面図、第4図は内側ピストンの正面図、第5
図は内側ピストンの他の例の正面図である。
3……内側ピストン、5……外側ピストン、3
3……連通孔、35……矢筈状の溝。
The attached drawings relate to one embodiment of this invention, and show the first embodiment.
Figure 2 is a cross-sectional view of the piston at a low compression ratio, Figure 2 is a cross-sectional view of the piston at a high compression ratio, Figure 3 is a front view of the outer piston, Figure 4 is a front view of the inner piston, and Figure 5 is a front view of the inner piston.
The figure is a front view of another example of the inner piston. 3...Inner piston, 5...Outer piston, 3
3...Communication hole, 35...Herringbone-shaped groove.
Claims (1)
内側ピストンとの間に低速で高圧縮比を必要とす
るとき高圧のオイルを供給し、外側ピストンと内
側ピストンとの相対位置を変化させてピストン長
を可変とする可変圧縮比形ピストン構造とし、前
記外側ピストンの少なくとも側圧のかかる部位に
シリンダ側と内側ピストン外周側とを連通する連
通孔を設け、この連通孔にオイルを導く溝を外側
ピストンの内周面と内側ピストンの外周面との何
れか一方に設けたことを特徴とする内燃機関のピ
ストン。 When a high compression ratio is required at low speeds, high-pressure oil is supplied between the outer piston and the inner piston housed within the outer piston, and the relative position of the outer piston and inner piston is changed to adjust the piston length. The piston has a variable compression ratio type piston structure, and a communication hole is provided in at least a portion of the outer piston where lateral pressure is applied to communicate the cylinder side and the outer peripheral side of the inner piston. A piston for an internal combustion engine, characterized in that the piston is provided on either the circumferential surface or the outer circumferential surface of the inner piston.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15827586U JPS6363558U (en) | 1986-10-17 | 1986-10-17 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15827586U JPS6363558U (en) | 1986-10-17 | 1986-10-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6363558U true JPS6363558U (en) | 1988-04-26 |
Family
ID=31081616
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15827586U Pending JPS6363558U (en) | 1986-10-17 | 1986-10-17 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6363558U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009030521A (en) * | 2007-07-26 | 2009-02-12 | Toyota Motor Corp | Piston |
-
1986
- 1986-10-17 JP JP15827586U patent/JPS6363558U/ja active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009030521A (en) * | 2007-07-26 | 2009-02-12 | Toyota Motor Corp | Piston |
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