JPH0387906U - - Google Patents

Info

Publication number
JPH0387906U
JPH0387906U JP14948889U JP14948889U JPH0387906U JP H0387906 U JPH0387906 U JP H0387906U JP 14948889 U JP14948889 U JP 14948889U JP 14948889 U JP14948889 U JP 14948889U JP H0387906 U JPH0387906 U JP H0387906U
Authority
JP
Japan
Prior art keywords
cylinder block
partition wall
side wall
wall
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.)
Granted
Application number
JP14948889U
Other languages
Japanese (ja)
Other versions
JPH0721850Y2 (en
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 JP14948889U priority Critical patent/JPH0721850Y2/en
Publication of JPH0387906U publication Critical patent/JPH0387906U/ja
Application granted granted Critical
Publication of JPH0721850Y2 publication Critical patent/JPH0721850Y2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)

Description

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

第1図は実施例に係るシリンダブロツクの部分
縦断面図、第2図はシリンダブロツク本体を下か
ら見た底面図。 1……エンジン本体、2〜4,6〜8……気筒
、14……シリンダブロツク本体、14a……シ
リンダブロツク本体の側壁、15……ロアブロツ
ク、15a……ロアブロツクの側壁、17……オ
イルリターン孔、18……クランク室、19……
隔壁、20……軸受部、21……連通孔、L
…連通孔側の肉厚、L……シリンダブロツク外
部側の肉厚。
FIG. 1 is a partial longitudinal cross-sectional view of a cylinder block according to an embodiment, and FIG. 2 is a bottom view of the cylinder block main body viewed from below. 1...Engine body, 2-4, 6-8...Cylinder, 14...Cylinder block body, 14a...Side wall of cylinder block body, 15...Lower block, 15a...Side wall of lower block, 17...Oil return Hole, 18... Crank chamber, 19...
Partition wall, 20...Bearing portion, 21...Communication hole, L1 ...
...Thickness on the communication hole side, L 2 ...Thickness on the outside side of the cylinder block.

Claims (1)

【実用新案登録請求の範囲】 多気筒エンジンのシリンダブロツクが、クラン
クシフトを挟んで上下に分割されたシリンダブロ
ツク本体とロアブロツクとで構成され、 該シリンダブロツクは、そのクランク室が、気
筒間において、前記シリンダブロツクの一の側壁
から他の側壁にわたつて延びる隔壁で仕切られて
、該隔壁に前記クランクシヤフトの軸受部が形成
され、 該隔壁と前記シリンダブロツクの側壁との合流
部には、前記隔壁側に、該隔壁で仕切られた一の
クランク室と他のクランク室とを連通する連通孔
が設けられ、前記側壁側に、前記シリンダブロツ
ク本体から前記ロアブロツクに連なるオイルリタ
ーン孔が設けられたエンジンのシリンダブロツク
構造において、 前記オイルリターン孔と前記連通孔との間の肉
厚が除肉されて、前記連通孔の有効断面積が拡大
されている、 ことを特徴とするエンジンのシリンダブロツク構
造。
[Claims for Utility Model Registration] A cylinder block of a multi-cylinder engine is composed of a cylinder block main body and a lower block which are divided into upper and lower parts with a crank shift in between, and the cylinder block has a crank chamber between the cylinders. The cylinder block is partitioned by a partition wall extending from one side wall to the other side wall, and a bearing portion of the crankshaft is formed in the partition wall, and a junction of the partition wall and the side wall of the cylinder block is provided with a partition wall extending from one side wall to another side wall. A communication hole communicating between one crank chamber and another crank chamber partitioned by the partition wall is provided on the partition wall side, and an oil return hole is provided on the side wall side leading from the cylinder block body to the lower block. A cylinder block structure for an engine, characterized in that a wall thickness between the oil return hole and the communication hole is removed to enlarge an effective cross-sectional area of the communication hole. .
JP14948889U 1989-12-26 1989-12-26 Engine cylinder block structure Expired - Fee Related JPH0721850Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14948889U JPH0721850Y2 (en) 1989-12-26 1989-12-26 Engine cylinder block structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14948889U JPH0721850Y2 (en) 1989-12-26 1989-12-26 Engine cylinder block structure

Publications (2)

Publication Number Publication Date
JPH0387906U true JPH0387906U (en) 1991-09-09
JPH0721850Y2 JPH0721850Y2 (en) 1995-05-17

Family

ID=31695877

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14948889U Expired - Fee Related JPH0721850Y2 (en) 1989-12-26 1989-12-26 Engine cylinder block structure

Country Status (1)

Country Link
JP (1) JPH0721850Y2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011179483A (en) * 2010-03-04 2011-09-15 Honda Motor Co Ltd Multi-cylinder engine
JP2015063905A (en) * 2013-09-24 2015-04-09 本田技研工業株式会社 Oil recovery device of internal combustion engine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5568890B2 (en) * 2009-06-02 2014-08-13 スズキ株式会社 Oil breather device for motorcycle engines

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011179483A (en) * 2010-03-04 2011-09-15 Honda Motor Co Ltd Multi-cylinder engine
JP2015063905A (en) * 2013-09-24 2015-04-09 本田技研工業株式会社 Oil recovery device of internal combustion engine

Also Published As

Publication number Publication date
JPH0721850Y2 (en) 1995-05-17

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees