JPWO2022049936A5 - - Google Patents
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- JPWO2022049936A5 JPWO2022049936A5 JP2022546160A JP2022546160A JPWO2022049936A5 JP WO2022049936 A5 JPWO2022049936 A5 JP WO2022049936A5 JP 2022546160 A JP2022546160 A JP 2022546160A JP 2022546160 A JP2022546160 A JP 2022546160A JP WO2022049936 A5 JPWO2022049936 A5 JP WO2022049936A5
- Authority
- JP
- Japan
- Prior art keywords
- inlet
- cylinder head
- combustion engine
- internal combustion
- cylinder
- 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
- 238000002485 combustion reaction Methods 0.000 claims 8
- 238000001816 cooling Methods 0.000 claims 7
- 239000003507 refrigerant Substances 0.000 claims 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 7
- 125000006850 spacer group Chemical group 0.000 claims 4
- 239000002826 coolant Substances 0.000 claims 3
- 230000002093 peripheral effect Effects 0.000 claims 2
- 238000011144 upstream manufacturing Methods 0.000 claims 1
Claims (7)
前記シリンダブロック側の前記ウォータジャケットの内部に配置されるスペーサと、
前記シリンダブロック側の前記ウォータジャケットにおいて、前記シリンダボアの拡径方向に前記ウォータジャケットを拡大した入口部と、
前記シリンダブロック側に設けられ前記入口部に冷媒を導入する第一導入口と、
を備え、
前記スペーサは、前記スペーサの前記シリンダブロック側の前記ウォータジャケット内に位置する箇所から前記入口部の内部に進入するとともに前記第一導入口よりも前記シリンダヘッド側に位置する堰部と、前記堰部に立設されるとともに冷媒の流通方向に沿って延びる複数のリブと、を有し、
前記複数のリブは、平行に配置されている
ことを特徴とする、内燃機関の冷却構造。 a water jacket formed inside the cylinder block and the cylinder head surrounding the cylinder bore of the internal combustion engine;
a spacer arranged inside the water jacket on the cylinder block side ;
an inlet portion of the water jacket on the cylinder block side, the water jacket being enlarged in a radially expanding direction of the cylinder bore;
a first introduction port provided on the cylinder block side for introducing a refrigerant into the inlet ;
with
The spacer enters the interior of the inlet from a portion of the spacer positioned in the water jacket on the cylinder block side and is positioned closer to the cylinder head than the first introduction port; a plurality of ribs erected on the portion and extending along the direction of flow of the refrigerant ,
The plurality of ribs are arranged in parallel
A cooling structure for an internal combustion engine, characterized by:
前記堰部は、前記第一導入口と前記第二導入口との間に配置されて、前記第一導入口から流入した冷媒が前記第二導入口から直接流出することを抑制し、
前記リブは、前記堰部における前記第二導入口側の面に立設されて、前記第二導入口側の冷媒を整流する
ことを特徴とする、請求項１記載の内燃機関の冷却構造。 a second inlet for communicating the water jacket on the cylinder block side and the water jacket on the cylinder head side;
The weir portion is arranged between the first inlet and the second inlet, and suppresses the refrigerant flowing in from the first inlet from directly flowing out from the second inlet,
2. The cooling structure for an internal combustion engine according to claim 1, wherein said rib is erected on a surface of said weir portion on the side of said second inlet, and rectifies the refrigerant on the side of said second inlet.
前記堰部は、前記第一導入口から流入した冷媒を前記シリンダボアの周面に沿う方向へ誘導し、
前記誘導された冷媒は、前記シリンダボアの周面を循環し前記堰部の前記シリンダヘッド側へ流入する
ことを特徴とする、請求項２記載の内燃機関の冷却構造。 The second inlet is located on the cylinder head side of the weir,
The weir guides the refrigerant that has flowed in from the first inlet in a direction along the peripheral surface of the cylinder bore,
3. The cooling structure for an internal combustion engine according to claim 2, wherein the introduced coolant circulates around the peripheral surface of the cylinder bore and flows into the weir portion toward the cylinder head.
ことを特徴とする、請求項３記載の内燃機関の冷却構造。 4. The cooling structure for an internal combustion engine according to claim 3, wherein a surface of said weir portion on the cylinder head side is formed so as to be inclined toward the cylinder head side toward the downstream side in the flow direction of the coolant.
前記壁部は、冷媒の流れ方向において前記リブの上流側に位置する
ことを特徴とする、請求項２～４のいずれか１項に記載の内燃機関の冷却構造。 The spacer has a wall portion erected on a surface of the weir portion on the second inlet side to prevent the refrigerant on the second inlet side from flowing back to the first inlet side,
The wall portion is positioned upstream of the rib in a coolant flow direction.
A cooling structure for an internal combustion engine according to any one of claims 2 to 4, characterized in that:
ことを特徴とする、請求項２～５のいずれか１項に記載の内燃機関の冷却構造。 6. The rib is formed in a shape extending linearly along the flow direction of the refrigerant flowing on the cylinder head side of the weir when viewed from the cylinder head side. The cooling structure for an internal combustion engine according to any one of Claims 1 to 3.
ことを特徴とする、請求項２～６のいずれか１項に記載の内燃機関の冷却構造。 The second inlet is formed in a gasket that is sandwiched between the cylinder block and the cylinder head, and is arranged between the plurality of ribs when viewed from above. 7. The cooling structure for an internal combustion engine according to any one of 6.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020146595 | 2020-09-01 | ||
| JP2020146595 | 2020-09-01 | ||
| PCT/JP2021/027988 WO2022049936A1 (en) | 2020-09-01 | 2021-07-28 | Cooling structure for internal combustion engine |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JPWO2022049936A1 JPWO2022049936A1 (en) | 2022-03-10 |
| JPWO2022049936A5 true JPWO2022049936A5 (en) | 2023-02-21 |
| JP7327684B2 JP7327684B2 (en) | 2023-08-16 |
Family
ID=80491977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2022546160A Active JP7327684B2 (en) | 2020-09-01 | 2021-07-28 | Cooling structure of internal combustion engine |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP7327684B2 (en) |
| CN (1) | CN116057260A (en) |
| WO (1) | WO2022049936A1 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5063449B2 (en) | 2008-03-31 | 2012-10-31 | ダイハツ工業株式会社 | Water jacket spacer |
| JP4547017B2 (en) | 2008-04-25 | 2010-09-22 | トヨタ自動車株式会社 | Internal combustion engine cooling structure |
-
2021
- 2021-07-28 WO PCT/JP2021/027988 patent/WO2022049936A1/en active Application Filing
- 2021-07-28 CN CN202180053657.2A patent/CN116057260A/en active Pending
- 2021-07-28 JP JP2022546160A patent/JP7327684B2/en active Active
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