JP2011064086A5 - - Google Patents
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- JP2011064086A5 JP2011064086A5 JP2009213317A JP2009213317A JP2011064086A5 JP 2011064086 A5 JP2011064086 A5 JP 2011064086A5 JP 2009213317 A JP2009213317 A JP 2009213317A JP 2009213317 A JP2009213317 A JP 2009213317A JP 2011064086 A5 JP2011064086 A5 JP 2011064086A5
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- JP
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- Prior art keywords
- cam
- oil
- oil supply
- journal
- passage
- Prior art date
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Description
上記目的を達成するために、請求項１に記載の発明は、カムシャフトを回転自在に支持するシリンダヘッドのカムジャーナルを経由してカムキャップに導かれるオイル通路と、オイル通路に接続され、カムジャーナルの側方に配置されるカムに向かって延び、カムに潤滑油を供給するオイル供給通路と、を備える内燃機関において、オイル供給通路のカムジャーナルの両側面における開口部を、カムのカムベース円の外径範囲の外方、且つカムのカム山頂部の外径範囲の内方に配置することを特徴とする。 In order to achieve the above object, an invention according to claim 1 is directed to an oil passage that is guided to a cam cap via a cam journal of a cylinder head that rotatably supports a camshaft, and is connected to the oil passage. extends towards the cam is located on a side of the journal, in an internal combustion engine comprising an oil supply passage for supplying lubricating oil to the cam, the opening in both side surfaces of the cam journal oil supply passage, a cam base circle of the cam It arrange | positions in the outer side of the outer diameter range of this, and the inner side of the outer diameter range of the cam peak part of a cam.
請求項１の発明によれば、オイル供給通路のカムジャーナルの両側面における開口部を、カムのカムベース円の外径範囲の外方、且つカムのカム山頂部の外径範囲の内方に配置するため、カム回転時において、カムベース円付近では、カム面にオイルを直接供給することによりカム面を潤滑することができ、カム山頂部付近では、カム側面にオイルを噴射することによりオイルを飛散させて周囲を潤滑することができる。これにより、オイル供給通路を簡素化することができ、カムの潤滑性を高めることができる。さらに、カム上方にオイル供給通路を渡さないので、ヘッド高を低く抑えることができる。 According to the present invention, disposing the opening in both side surfaces of the cam journal oil supply passage, the outside of the outer diameter range of the cam base circle of the cam, and the inside of the outer diameter range of the cam crest of the cam Therefore, during cam rotation, the cam surface can be lubricated by supplying oil directly to the cam surface in the vicinity of the cam base circle, and oil is scattered by injecting oil to the cam side surface near the cam peak. The surroundings can be lubricated. Thereby, the oil supply passage can be simplified and the lubricity of the cam can be improved. Furthermore, since the oil supply passage is not passed above the cam, the head height can be kept low.
また、左右一対の上部カムジャーナル７１には、オイル供給溝７５に接続されるオイル供給通路７６が形成されており、このオイル供給通路７６は、オイル供給溝７５の中央部から上方に延び、カムシャフト６０の径方向と平行に形成される縦通路７６ａと、この縦通路７６ａの上端部から上部カムジャーナル７１の両側に配置されるカム６１，６１側に延び、カムシャフト６０の軸方向と平行に形成される横通路７６ｂと、を備える。これにより、オイル供給溝７５のオイルは、オイル供給通路７６に導かれ、横通路７６ｂの上部カムジャーナル７１の両側面における開口部７７から噴射される。また、横通路７６ｂは、上部カムジャーナル７１を貫通するように１本の通路で形成されている。 An oil supply passage 76 connected to the oil supply groove 75 is formed in the pair of left and right upper cam journals 71. The oil supply passage 76 extends upward from the central portion of the oil supply groove 75, and is connected to the cam. A longitudinal passage 76a formed parallel to the radial direction of the shaft 60, and extends from the upper end of the longitudinal passage 76a to the cams 61 and 61 disposed on both sides of the upper cam journal 71, and is parallel to the axial direction of the camshaft 60. The lateral passage 76b is formed. Accordingly, oil in the oil supply groove 75 is guided to the oil supply passage 76 is injected from the opening 77 on both sides of the upper cam journal 71 of the eyelet 76 b. Further, the lateral passage 76 b is formed as a single passage so as to penetrate the upper cam journal 71.
以上説明したように、本実施形態の内燃機関１０によれば、オイル供給通路７６の上部カムジャーナル７１の両側面における開口部７７を、カム６１のカムベース円６１ａの外径範囲Ｒ１の外方、且つカム６１のカム山頂部６１ｂの外径範囲Ｒ２の内方に配置するため、カム回転時において、カムベース円６１ａ付近では、カム面にオイルを直接供給することによりカム面を潤滑することができ、カム山頂部６１ｂ付近では、カム側面にオイルを噴射することによりオイルを飛散させて周囲を潤滑することができる。これにより、オイル供給通路７６を簡素化することができ、カム６１の潤滑性を高めることができる。さらに、カム６１上方にオイル供給通路を渡さないので、ヘッド高を低く抑えることができる。 As described above, according to the internal combustion engine 10 of the present embodiment, the openings 77 in both side surfaces of the upper cam journal 71 of the oil supply passage 76, outward of the outer diameter range R1 of the cam base circle 61a of the cam 61, In addition, since the cam 61 is arranged inside the outer diameter range R2 of the cam peak 61b, the cam surface can be lubricated by supplying oil directly to the cam surface in the vicinity of the cam base circle 61a during cam rotation. In the vicinity of the cam peak 61b, the oil can be sprayed onto the side surface of the cam to scatter the oil and lubricate the surroundings. Thereby, the oil supply passage 76 can be simplified and the lubricity of the cam 61 can be improved. Furthermore, since the oil supply passage is not passed above the cam 61, the head height can be kept low.
Claims (1)
前記オイル供給通路の前記カムジャーナルの両側面における開口部を、前記カムのカムベース円の外径範囲の外方、且つ前記カムのカム山頂部の外径範囲の内方に配置することを特徴とする内燃機関。 An oil passage that is guided to a cam cap via a cam journal of a cylinder head that rotatably supports the camshaft, and is connected to the oil passage and extends toward a cam disposed on a side of the cam journal, In an internal combustion engine comprising an oil supply passage for supplying lubricating oil to a cam,
And wherein placing the opening on both sides of the cam journal of the oil supply passage, the outside of the outer diameter range of the cam base circle of the cam, and the inside of the outer diameter range of the cam crest of the cam An internal combustion engine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009213317A JP5329354B2 (en) | 2009-09-15 | 2009-09-15 | Internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009213317A JP5329354B2 (en) | 2009-09-15 | 2009-09-15 | Internal combustion engine |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2011064086A JP2011064086A (en) | 2011-03-31 |
| JP2011064086A5 true JP2011064086A5 (en) | 2012-11-29 |
| JP5329354B2 JP5329354B2 (en) | 2013-10-30 |
Family
ID=43950594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2009213317A Active JP5329354B2 (en) | 2009-09-15 | 2009-09-15 | Internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP5329354B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5740290B2 (en) * | 2011-11-25 | 2015-06-24 | 本田技研工業株式会社 | Oil passage structure of internal combustion engine |
| JP2016125370A (en) * | 2014-12-26 | 2016-07-11 | 富士重工業株式会社 | Cam shaft supporting structure |
| JP2016205323A (en) * | 2015-04-27 | 2016-12-08 | ダイハツ工業株式会社 | Lubricant supply structure of internal combustion engine |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6170510U (en) * | 1984-10-15 | 1986-05-14 | ||
| JPH0440106U (en) * | 1990-07-31 | 1992-04-06 | ||
| JPH07139326A (en) * | 1993-11-19 | 1995-05-30 | Suzuki Motor Corp | Lubricating device for engine valve system |
| JP3695247B2 (en) * | 1999-09-28 | 2005-09-14 | スズキ株式会社 | Four-cycle engine lubrication structure |
| JP5191746B2 (en) * | 2008-01-10 | 2013-05-08 | 本田技研工業株式会社 | Lubrication structure of valve mechanism |
-
2009
- 2009-09-15 JP JP2009213317A patent/JP5329354B2/en active Active
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