JPH0342019U - - Google Patents
Info
- Publication number
- JPH0342019U JPH0342019U JP10329089U JP10329089U JPH0342019U JP H0342019 U JPH0342019 U JP H0342019U JP 10329089 U JP10329089 U JP 10329089U JP 10329089 U JP10329089 U JP 10329089U JP H0342019 U JPH0342019 U JP H0342019U
- Authority
- JP
- Japan
- Prior art keywords
- cooling air
- head
- hole
- cylinder
- cooling
- 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
- 238000001816 cooling Methods 0.000 claims description 23
- 238000002485 combustion reaction Methods 0.000 claims description 5
Landscapes
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Description
第１図乃至第８図は本考案の実施例を示し、第
１図はエンジンの正面図、第２図はシリンダヘツ
ドの背面図、第３図はシリンダヘツドの横断断面
図、第４図は中間前寄り部冷却用孔の概略断面図
、第５図は中間後ろ寄り部冷却用孔の概略断面図
、第６図はヘツド中間冷却風孔の縦断断面図、第
７図は本考案の別実施例を示すシリンダヘツドの
概略正面図、第８図は第７図−線拡大断面図
であり、第９図及び第１０図は従来例を示し、第
９図はシリンダとシリンダヘツドを示す縦断断面
図、第１０図はエンジンの概略正面図である。
２……シリンダ、３……シリンダ外周冷却風路
、４……シリンダヘツド、５……ヘツド外周冷却
風路、６……燃焼室、７……プツシユロツド室、
８……ヘツド中間肉壁部分、９……ヘツド中間冷
却風孔、１０……冷却フアン、１１……フアンケ
ース、１２……９の孔底壁、１５……中間前寄り
部冷却用孔、１８……中間後ろ寄り部冷却用孔。
Figures 1 to 8 show an embodiment of the present invention; Figure 1 is a front view of the engine, Figure 2 is a rear view of the cylinder head, Figure 3 is a cross-sectional view of the cylinder head, and Figure 4 is a cross-sectional view of the cylinder head. FIG. 5 is a schematic sectional view of the intermediate front cooling hole, FIG. 6 is a longitudinal sectional view of the head intermediate cooling air hole, and FIG. A schematic front view of a cylinder head showing an embodiment, FIG. 8 is an enlarged sectional view taken along the line of FIG. 7, FIGS. 9 and 10 show a conventional example, and FIG. The sectional view, FIG. 10, is a schematic front view of the engine. 2...Cylinder, 3...Cylinder outer periphery cooling air passage, 4...Cylinder head, 5...Head outer circumference cooling air passage, 6...Combustion chamber, 7...Push rod chamber,
8... Head intermediate wall portion, 9... Head intermediate cooling air hole, 10... Cooling fan, 11... Fan case, 12... Hole bottom wall of 9, 15... Intermediate front cooling hole, 18...Middle rear cooling hole.
Claims (1)
にシリンダ外周冷却風路３を形成し、シリンダヘ
ツド４の外周にヘツド外周冷却風路５を形成し、 シリンダヘツド４の燃焼室６とプツシユロツド
室７との間のヘツド中間肉壁部分８にヘツド中間
冷却風孔９を前後方向に貫通させ、 エンジン１の前側に冷却フアン１０とフアンケ
ース１１とを設け、冷却フアン１０で起した冷却
風をフアンケース１１で案内して、シリンダ外周
冷却風路３・ヘツド外周冷却風路５及びヘツド中
間冷却風孔９に分流して通過させるように構成し
た強制空冷頭上弁エンジンの燃焼室・プツシユロ
ツド室間部分の冷却装置において、 ヘツド中間冷却風孔９の孔底壁１２の前寄り部
分１３と、これの下側に位置するシリンダ２の上
壁鍔２ａの前寄り部分１４とに亘つて中間前寄り
部冷却用孔１５をあけ、 ヘツド中間冷却風孔９の孔底壁１２の後ろ寄り
部分１６と、これの下側に位置するシリンダ２の
上壁鍔２ｂの後ろ寄り部分１７とに亘つて中間後
ろ寄り部冷却用孔１８をあけた事を特徴とする強
制空冷頭上弁エンジンの燃焼室・プツシユロツド
室間部分の冷却装置。[Scope of Claim for Utility Model Registration] A cylinder outer circumference cooling air passage 3 is formed on the outer periphery of the cylinder 2 of the forced air-cooled overhead valve engine 1, a head outer circumference cooling air passage 5 is formed on the outer periphery of the cylinder head 4, A head intermediate cooling air hole 9 is passed through the head intermediate wall portion 8 between the combustion chamber 6 and the push rod chamber 7 in the longitudinal direction, and a cooling fan 10 and a fan case 11 are provided on the front side of the engine 1. This is a forced air-cooled overhead valve engine configured so that the cooling air generated by the engine is guided by a fan case 11 and divided into a cylinder outer circumference cooling air passage 3, a head outer circumference cooling air passage 5, and a head intermediate cooling air hole 9. In the cooling device for the part between the combustion chamber and the push rod chamber, the front part 13 of the hole bottom wall 12 of the head intermediate cooling air hole 9, and the front part 14 of the upper wall flange 2a of the cylinder 2 located below this. An intermediate front cooling hole 15 is drilled across the head intermediate cooling air hole 9 and a rear portion 16 of the hole bottom wall 12 of the head intermediate cooling air hole 9 and a rear portion of the upper wall flange 2b of the cylinder 2 located below this. 17. A cooling device for a portion between a combustion chamber and a push rod chamber of a forced air-cooled overhead valve engine, characterized in that a hole 18 for cooling an intermediate rear portion is provided between the combustion chamber and the push rod chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10329089U JPH077536Y2 (en) | 1989-09-01 | 1989-09-01 | Forced air cooling overhead valve engine cooling system between combustion chamber and push rod chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10329089U JPH077536Y2 (en) | 1989-09-01 | 1989-09-01 | Forced air cooling overhead valve engine cooling system between combustion chamber and push rod chamber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0342019U true JPH0342019U (en) | 1991-04-22 |
| JPH077536Y2 JPH077536Y2 (en) | 1995-02-22 |
Family
ID=31652138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10329089U Expired - Lifetime JPH077536Y2 (en) | 1989-09-01 | 1989-09-01 | Forced air cooling overhead valve engine cooling system between combustion chamber and push rod chamber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH077536Y2 (en) |
-
1989
- 1989-09-01 JP JP10329089U patent/JPH077536Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH077536Y2 (en) | 1995-02-22 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |