CN201666195U - Small engine cylinder cover with cooling jacket - Google Patents
Small engine cylinder cover with cooling jacket Download PDFInfo
- Publication number
- CN201666195U CN201666195U CN2009202069398U CN200920206939U CN201666195U CN 201666195 U CN201666195 U CN 201666195U CN 2009202069398 U CN2009202069398 U CN 2009202069398U CN 200920206939 U CN200920206939 U CN 200920206939U CN 201666195 U CN201666195 U CN 201666195U
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- CN
- China
- Prior art keywords
- cylinder
- cooling
- cylinder cover
- cooling jacket
- jacket
- 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.)
- Expired - Fee Related
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- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The utility model provides a small engine cylinder cover with a cooling jacket, comprising a cylinder cover body, a cooling jacket is pre-cast between two air vents of the cylinder cover body and is positioned above a combustion chamber, and a water jacket hole communicated with a cooling water tunnel of a cylinder body is machined in the cooling jacket. The water jacket hole is disposed in the middle of two exhaust valves of each cylinder of an engine on the cylinder cover body, and is positioned at the right upper part of the combustion chamber and near the air vents, a center axial line of the water jacket hole and a bottom plane of the cylinder cover form an included angle (C1), and the included angle (C1) is between 30 degrees and 50 degrees. The utility model can rapidly take away heat brought by high temperature waste gas transfer by adding the cooling jacket between the two air vents of the cylinder cover, thus improving the dynamic property, durability and combustion performance of the engine. In order to prevent the local part from becoming a dead zone in which cooling water flows, holes further are machined to be communicated with the cooling water between the cylinder body and the cylinder cover, so as to take away heat and prevent dead water regions.
Description
Technical field
The utility model belongs to technical field of engines, is specifically related to the engine cylinder cover cooling passage structure that a kind of discharge capacity is little, power per liter is high.
Background technique
Because motor is subjected to spatial constraints and lightweight requirements, the integral arrangement space is very compact, arranging between air flue and the cylinder body, the space of being left is very little, cooling water channel can't reduce the intensity of cylinder head when guaranteeing to play fine cooling effect, if according to traditional structural design, between two air outlet flues of cylinder head, do not design the precasting water channel, cooling effect can be very poor around the air flue, perhaps between two air outlet flues water channel is arranged but be not communicated with the cooling water channel of cylinder body, this local dead band that forms flow of cooling water easily, cooling effect is also bad around the air flue.
Summary of the invention
The purpose of this utility model is to be subjected to structural limitations at existing, and the mini engine cylinder head that cooling effect is bad proposes a kind of mini engine cylinder head with cooling jacket.
The technical solution of the utility model is as follows:
A kind of mini engine cylinder head with cooling jacket, it has the cylinder lid, and between two air outlet flues of cylinder lid and be positioned at the top position, firing chamber and be precast with cooling jacket, in cooling jacket inside, machining has the water jacket hole that is communicated with the cylinder block cooling water road.
Described water jacket hole is arranged in the middle of two exhaust valves of the every cylinder of motor on the cylinder lid, and in the upper right, firing chamber, and near air outlet flue, the hole heart axes in water jacket hole becomes angle C1 with the cylinder head bottom plane, C1 is 30 °～50 °.
The utility model is provided with cooling jacket by increasing between two air outlet flues of cylinder head, this water jacket and the moulding of cylinder cap integrally casting, cooling liquid is flowed through herein, can take away the heat that the high-temp waste gas transmission comes more fast, improves power character, durability, the combustion performance of motor.For the anti-local here dead band that becomes flow of cooling water, also further add the hole by machine, be communicated with the cooling water between cylinder body, cylinder cap, take away heat, prevent dead water region.
Consider that the cylinder head sand core of water jacket will have enough intensity, precasting water jacket post will guarantee the effective diameter that ∮ 5mm is above.Guarantee that again wall thickness is consistent between air flue and the water jacket, so both satisfied the space rational deployment, also increased the intensity of cylinder head simultaneously.
As seen this effect that the utility model proposes has the cylinder head of cooling jacket, has optimized the cylinder head arrangement of motor, improves the cooling effect of engine cylinder cover, increases cylinder head intensity.
Description of drawings:
Fig. 1: the schematic representation of cylinder head air outlet flue side cooling jacket
Fig. 2: the cylinder head machine adds the sectional view at place, water jacket hole
Fig. 3: the cylinder head water jacket flows to schematic representation
Fig. 4: the cooling water connected relation schematic representation of cylinder cap and cylinder body; Fig. 4 A is the cylinder cap part; Fig. 4 B is a cylinder part.
Embodiment:
Referring to Fig. 1 and Fig. 2,3, between two air outlet flues 3 and 4 of cylinder lid, the top position precasting cooling jacket 1 (the 7th, spark-plug hole) of firing chamber 5, in order to guarantee wall thickness unanimity on every side, consider that simultaneously the wall thickness between air outlet flue and the cooling jacket 1 is even, can take the air flue space, make air flue inside that convex closure be arranged, but by air flue steady state test revision air flue 3D shape-designing, can be because of there being convex closure to cause influence to drop to minimum to air-flow, almost can ignore, so the precasting water jacket is irregular shape.Cooling water flow is taken away the heat that the high-temp waste gas transmission comes more fast through herein, is the anti-local here dead band that becomes flow of cooling water.
Referring to Fig. 2 and Fig. 4, inside at cooling jacket 1, machine is added with water jacket hole 2, the about ∮ 5mm of diameter, this hole is arranged on two exhaust valves middle (every cylinder four valves of this motor advance, arrange each two) of every cylinder and is positioned at the position, upper right of firing chamber 5, and near air outlet flue, 6 one-tenth C1 angles in bottom plane of the hole heart axes in water jacket hole and cylinder lid, C1 is 30 °～50 ° and is advisable.
Referring to Fig. 3 and Fig. 4, Fig. 4 A, Fig. 4 B, the precasting water jacket 9 that the water jacket hole 2 of cylinder head 10 is communicated with in the cylinder body 11, cooling water flows to the cooling jacket 1 of cylinder head 10 by water jacket hole 2 from the precasting water jacket 9 of cylinder body 11, cooling water is taken away the heat of cylinder head 10, flows out from the rear end 8 of cylinder head 10, enters cooling system, behind cooling system, flow to cylinder body 11 again, realize circulating, whole cooling water moves direction shown in Fig. 2 and Fig. 4 direction of arrow in cylinder head stream.
Claims (4)
1. mini engine cylinder head with cooling jacket, it has the cylinder lid, it is characterized in that: between two air outlet flues of cylinder lid and be positioned at the top position, firing chamber and be precast with cooling jacket, in cooling jacket inside, machining has the water jacket hole that is communicated with the cylinder block cooling water road.
2. the mini engine cylinder head with cooling jacket according to claim 1, it is characterized in that: described water jacket hole is arranged in the middle of two exhaust valves of the every cylinder of motor on the cylinder lid, and in the upper right, firing chamber, and near air outlet flue, the hole heart axes in water jacket hole becomes angle (C1) with the cylinder head bottom plane, the scope of angle (C1) is 30 °～50 °.
3. the mini engine cylinder head with cooling jacket according to claim 1 and 2 is characterized in that: described cooling jacket is consistent with the wall thickness between two air outlet flues.
4. the mini engine cylinder head with cooling jacket according to claim 1 and 2 is characterized in that: described water jacket bore dia is ∮ 5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202069398U CN201666195U (en) | 2009-10-30 | 2009-10-30 | Small engine cylinder cover with cooling jacket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202069398U CN201666195U (en) | 2009-10-30 | 2009-10-30 | Small engine cylinder cover with cooling jacket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201666195U true CN201666195U (en) | 2010-12-08 |
Family
ID=43267154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202069398U Expired - Fee Related CN201666195U (en) | 2009-10-30 | 2009-10-30 | Small engine cylinder cover with cooling jacket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201666195U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106321271A (en) * | 2016-08-29 | 2017-01-11 | 潍柴动力股份有限公司 | Machine body water cavity arrangement form |
| JP2018155215A (en) * | 2017-03-21 | 2018-10-04 | スズキ株式会社 | Cylinder head structure |
-
2009
- 2009-10-30 CN CN2009202069398U patent/CN201666195U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106321271A (en) * | 2016-08-29 | 2017-01-11 | 潍柴动力股份有限公司 | Machine body water cavity arrangement form |
| CN106321271B (en) * | 2016-08-29 | 2019-07-30 | 潍柴动力股份有限公司 | A kind of machine body water cavity arrangement form |
| JP2018155215A (en) * | 2017-03-21 | 2018-10-04 | スズキ株式会社 | Cylinder head structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101208 Termination date: 20131030 |