JPH02124219U - - Google Patents
Info
- Publication number
- JPH02124219U JPH02124219U JP3409189U JP3409189U JPH02124219U JP H02124219 U JPH02124219 U JP H02124219U JP 3409189 U JP3409189 U JP 3409189U JP 3409189 U JP3409189 U JP 3409189U JP H02124219 U JPH02124219 U JP H02124219U
- Authority
- JP
- Japan
- Prior art keywords
- exhaust port
- intake port
- cylinder head
- shape
- cooling air
- 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 5
- 238000002485 combustion reaction Methods 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
Landscapes
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Description
第１図と第２図は本考案の一実施例に係る空冷
頭上弁型エンジンのシリンダヘツドを示し、第１
図は第２図のＡ−Ａ線横断平面図、第２図は正面
図である。また、第３図と第４図は従来の空冷頭
上弁型エンジンのシリンダヘツドを示し、第３図
は正面図、第４図は第３図のＢ−Ｂ線横断平面図
である。
１……シリンダヘツド、２……燃焼室、３……
厚肉部、４……冷却風路、５……プツシユロツド
挿通部、８……吸気ポート、９……排気ポート、
１０……点火プラグ孔、１４……高温部冷却風路
。
1 and 2 show a cylinder head of an air-cooled overhead valve type engine according to an embodiment of the present invention.
The figure is a cross-sectional plan view taken along the line A--A in FIG. 2, and FIG. 2 is a front view. 3 and 4 show a cylinder head of a conventional air-cooled overhead valve type engine, with FIG. 3 being a front view and FIG. 4 being a cross-sectional plan view taken along the line B--B in FIG. 1... Cylinder head, 2... Combustion chamber, 3...
Thick wall part, 4...Cooling air path, 5...Push rod insertion part, 8...Intake port, 9...Exhaust port,
10...Spark plug hole, 14...High temperature part cooling air passage.
Claims (1)
厚肉部３と、この厚肉部３の一側方に冷却風路４
を隔てて配置されたプツシユロツド挿通部５とを
備え、上記厚肉部３にＬ字形に配置された吸気ポ
ート８及び排気ポート９と、吸気ポート８及び排
気ポート９によりＬ字形に囲まれた部分で上面か
ら下面に貫通する点火プラグ孔１０とが形成され
た空冷頭上弁型エンジンのシリンダヘツドにおい
て、 上記厚肉部３に冷却風路４から分岐され、吸気
ポート８と排気ポート９との間を通つて吸気ポー
ト８及び排気ポート９によりＬ字形に囲まれた空
間に連通する高温部冷却風路１４を設けたことを
特徴とする、空冷頭上弁型エンジンのシリンダヘ
ツド。[Scope of Claim for Utility Model Registration] An air-cooled overhead valve engine has a thick wall portion 3 that covers the upper side of the combustion chamber 2, and a cooling air passage 4 on one side of the thick wall portion 3.
an intake port 8 and an exhaust port 9 arranged in an L-shape in the thick walled part 3, and a portion surrounded by the intake port 8 and the exhaust port 9 in an L-shape. In the cylinder head of an air-cooled overhead valve type engine in which a spark plug hole 10 penetrating from the upper surface to the lower surface is formed, a cooling air passage 4 is branched from the thick walled part 3 and between an intake port 8 and an exhaust port 9. A cylinder head of an air-cooled overhead valve type engine, characterized in that a high temperature part cooling air passage 14 is provided which communicates with a space surrounded by an L-shape by an intake port 8 and an exhaust port 9 through the cylinder head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989034091U JPH0716021Y2 (en) | 1989-03-25 | 1989-03-25 | Cylinder head of air-cooled overhead valve engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989034091U JPH0716021Y2 (en) | 1989-03-25 | 1989-03-25 | Cylinder head of air-cooled overhead valve engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02124219U true JPH02124219U (en) | 1990-10-12 |
| JPH0716021Y2 JPH0716021Y2 (en) | 1995-04-12 |
Family
ID=31538264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989034091U Expired - Lifetime JPH0716021Y2 (en) | 1989-03-25 | 1989-03-25 | Cylinder head of air-cooled overhead valve engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0716021Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0532752U (en) * | 1991-10-11 | 1993-04-30 | ヤンマーデイーゼル株式会社 | Cylinder cooling mechanism for air-cooled engine |
| JP2012136971A (en) * | 2010-12-24 | 2012-07-19 | Kawasaki Heavy Ind Ltd | Engine cooling device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63126542U (en) * | 1987-02-12 | 1988-08-18 |
-
1989
- 1989-03-25 JP JP1989034091U patent/JPH0716021Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63126542U (en) * | 1987-02-12 | 1988-08-18 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0532752U (en) * | 1991-10-11 | 1993-04-30 | ヤンマーデイーゼル株式会社 | Cylinder cooling mechanism for air-cooled engine |
| JP2012136971A (en) * | 2010-12-24 | 2012-07-19 | Kawasaki Heavy Ind Ltd | Engine cooling device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0716021Y2 (en) | 1995-04-12 |
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