JPH0395006U - - Google Patents
Info
- Publication number
- JPH0395006U JPH0395006U JP244890U JP244890U JPH0395006U JP H0395006 U JPH0395006 U JP H0395006U JP 244890 U JP244890 U JP 244890U JP 244890 U JP244890 U JP 244890U JP H0395006 U JPH0395006 U JP H0395006U
- Authority
- JP
- Japan
- Prior art keywords
- crankshaft
- wall
- crank chamber
- intermediate bearing
- rib
- 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
Landscapes
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Description
第１図から第５図はこの考案の一実施例にかか
る４サイクルエンジンのケース構造を示し、第１
図が４サイクルエンジンを用いた船外機の側面図
、第２図がエンジンの縦断面図、第３図がエンジ
ンの横断面図、第４図が第３図の−矢視によ
るシリンダケースの底面図、第５図が第３図のＶ
−Ｖ矢視によるクランクケースの平面図である。
１１…４サイクルエンジン、１２…シリンダブ
ロツク、２４…クランクシヤフト、２６…クラン
クケース、２７…クランク室、２８，２８ｅ，２
８ｍ…軸受半部、２９，２９ｅ，２９ｍ…軸受半
部、３１，３１ａ，３１ｂ，３１ｃ…リブ、３２
，３２ａ，３２ｂ，３２ｃ…リブ、７８，８６…
溝（凹部）、８０，８０ｅ，８０ｍ…軸受部。
Figures 1 to 5 show the case structure of a four-stroke engine according to an embodiment of this invention.
Figure 2 is a side view of an outboard motor using a 4-cycle engine, Figure 2 is a longitudinal cross-sectional view of the engine, Figure 3 is a cross-sectional view of the engine, and Figure 4 is a cylinder case taken from the - arrow direction in Figure 3. Bottom view, Figure 5 is V in Figure 3
- It is a top view of the crankcase as seen from arrow V. 11... 4-cycle engine, 12... cylinder block, 24... crankshaft, 26... crank case, 27... crank chamber, 28, 28e, 2
8m...bearing half, 29, 29e, 29m...bearing half, 31, 31a, 31b, 31c...rib, 32
, 32a, 32b, 32c...rib, 78, 86...
Groove (recess), 80, 80e, 80m...Bearing part.
Claims (1)
持する４サイクルエンジンにおいて、 前記クランク室内壁にシリンダ軸線に対して前
記クランク軸回転方向手前側で該クランク軸と平
行に延在するリブを一体に形成するとともに、こ
のリブのクランク軸回転方向手前で前記クランク
室内壁にリブと平行に延在する凹部を形成したこ
とを特徴とする４サイクルエンジンのケース構造
。 (2) 前記４サイクルエンジンは複数のシリンダ
を有する多気筒エンジンであつて、前記クランク
室内壁はシリンダ間で前記クランク軸を支持する
中間軸受部を有し、この中間軸受部と一体に前記
リブを形成したことを特徴とする請求項１に記載
の４サイクルエンジンのケース構造。 (3) 前記クランク室内壁は分数の中間軸受部を
有し、これら中間軸受部間に該中間軸受部と連続
させて前記リブを形成したことを特徴とする請求
項２に記載の４サイクルエンジンのケース構造。 (4) クランク室内にクランク軸を縦置きして支
持する４サイクルエンジンにおいて、 前記クランク室はシリンダブロツクにクランク
ケースを接合して画成され、前記クランク室内壁
の一部を形成するクランクケース内壁にシリンダ
軸線に対して前記クランク軸回転方向手前側にリ
ブを形成するとともに、 前記クランク室内壁の一部を形成するシリンダ
ブロツク内壁にシリンダ軸線に対して前記クラン
ク軸回転方向手前側にリブを形成したことを特徴
とする４サイクルエンジンのケース構造。[Claims for Utility Model Registration] (1) In a four-cycle engine in which a crankshaft is vertically supported in a crank chamber, there is provided a space between the crankshaft and the crankshaft on the front side of the crankshaft rotation direction with respect to the cylinder axis on the wall of the crank chamber. A case structure for a four-cycle engine, characterized in that ribs extending in parallel are integrally formed, and a recess extending in parallel to the ribs is formed in the inner wall of the crankshaft chamber before the ribs in the direction of rotation of the crankshaft. (2) The four-stroke engine is a multi-cylinder engine having a plurality of cylinders, and the crank chamber wall has an intermediate bearing portion that supports the crankshaft between the cylinders, and the rib is integrated with the intermediate bearing portion. The case structure for a four-cycle engine according to claim 1, characterized in that the case structure is formed with:. (3) The four-stroke engine according to claim 2, wherein the crank chamber wall has a fractional intermediate bearing portion, and the rib is formed between these intermediate bearing portions so as to be continuous with the intermediate bearing portion. case structure. (4) In a four-stroke engine in which a crankshaft is vertically placed and supported within a crank chamber, the crank chamber is defined by joining a crank case to a cylinder block, and an inner wall of the crank case forms a part of the wall of the crank chamber. A rib is formed on the front side in the direction of rotation of the crankshaft with respect to the cylinder axis, and a rib is formed on the inner wall of the cylinder block forming a part of the inner wall of the crankshaft on the front side in the direction of rotation of the crankshaft with respect to the cylinder axis. The case structure of a 4-cycle engine is characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP244890U JPH0721851Y2 (en) | 1990-01-16 | 1990-01-16 | Case structure of 4-cycle engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP244890U JPH0721851Y2 (en) | 1990-01-16 | 1990-01-16 | Case structure of 4-cycle engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0395006U true JPH0395006U (en) | 1991-09-27 |
| JPH0721851Y2 JPH0721851Y2 (en) | 1995-05-17 |
Family
ID=31506322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP244890U Expired - Lifetime JPH0721851Y2 (en) | 1990-01-16 | 1990-01-16 | Case structure of 4-cycle engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0721851Y2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0893546A (en) * | 1994-09-28 | 1996-04-09 | Honda Motor Co Ltd | Cylinder block structure of vertical multi-cylinder engine |
| JPH09256904A (en) * | 1997-03-07 | 1997-09-30 | Honda Motor Co Ltd | Crank shaft supporting structure for vertical engine |
| WO2007132847A1 (en) * | 2006-05-16 | 2007-11-22 | Toyota Jidosha Kabushiki Kaisha | Internal combustion engine |
-
1990
- 1990-01-16 JP JP244890U patent/JPH0721851Y2/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0893546A (en) * | 1994-09-28 | 1996-04-09 | Honda Motor Co Ltd | Cylinder block structure of vertical multi-cylinder engine |
| JPH09256904A (en) * | 1997-03-07 | 1997-09-30 | Honda Motor Co Ltd | Crank shaft supporting structure for vertical engine |
| WO2007132847A1 (en) * | 2006-05-16 | 2007-11-22 | Toyota Jidosha Kabushiki Kaisha | Internal combustion engine |
| US7938094B2 (en) | 2006-05-16 | 2011-05-10 | Toyota Jidosha Kabushiki Kaisha | Internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0721851Y2 (en) | 1995-05-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |