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
Application number
JP15827586U
Other languages
Japanese (ja)
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP15827586U priority Critical patent/JPS6363558U/ja
Publication of JPS6363558U publication Critical patent/JPS6363558U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

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)

【実用新案登録請求の範囲】[Scope of utility model registration request] 外側ピストンと、外側ピストン内に収納される
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.
JP15827586U 1986-10-17 1986-10-17 Pending JPS6363558U (en)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009030521A (en) * 2007-07-26 2009-02-12 Toyota Motor Corp Piston

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009030521A (en) * 2007-07-26 2009-02-12 Toyota Motor Corp Piston

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