CN101699051A - Air cylinder cover of miniature type engine precast with cooling water jacket - Google Patents
Air cylinder cover of miniature type engine precast with cooling water jacket Download PDFInfo
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- CN101699051A CN101699051A CN200910191307A CN200910191307A CN101699051A CN 101699051 A CN101699051 A CN 101699051A CN 200910191307 A CN200910191307 A CN 200910191307A CN 200910191307 A CN200910191307 A CN 200910191307A CN 101699051 A CN101699051 A CN 101699051A
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- water jacket
- cooling water
- cylinder cover
- precast
- air cylinder
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- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The invention provides an air cylinder cover of a miniature type engine precast with a cooling water jacket, which is provided with an air cylinder cover body, wherein a cooling water jacket is precast between two exhaust ducts of the air cylinder cover body and positioned at a position above a combustion chamber, and a water jacket hole which is communicated with a cooling water channel of a cylinder body is machined inside the cooling water jacket. The water jacket hole is arranged between two exhaust doors of each cylinder of an engine on the air cylinder cover body, is arranged at the upper right part of a combustion chamber and is close to the exhaust ducts, and an included angle C1 is formed between the axis of the hole center of the water jacket hole and the bottom plane of the air cylinder cover and the included angle is 30-50 degrees. By arranging the cooling water jacket between the two exhaust ducts of the air cylinder cover additionally, the invention can quickly take away superfluous heat transmitted by high-temperature waste gas and improve the power property, the durability and the combustion property of the engine. In order to prevent the local position from becoming the flowing dead area of cooling water, the cooling water between the cylinder body and the cylinder cover is also further communicated by machining holes to take away the heat, thus preventing the occurrence of a dead water area.
Description
Technical field
The invention belongs to technical field of engines, be specifically related to the engine cylinder cap 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 objective of the invention is to be subjected to structural limitations at existing, the mini engine cylinder head that cooling effect is bad proposes a kind of mini engine cylinder head that is precast with cooling jacket.
Technological scheme of the present invention is as follows:
A kind of mini engine cylinder head that is precast 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 present invention 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 jacket core 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 of the present invention's proposition has the cylinder head of cooling jacket, has optimized the air cylinder head structure of motor, improves the cooling effect of engine cylinder cap, 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: cylinder head jacket flows to schematic representation
Fig. 4: the cooling water connected relation schematic representation of cylinder cap and cylinder body
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, 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, the cooling people takes away the heat of cylinder head 10, flows out from the rear end 8 of cylinder cap 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 that is precast 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 that is precast 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, and the scope of C1 is 30 °～50 °.
3. the mini engine cylinder head that is precast 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 that is precast with cooling jacket according to claim 1 and 2 is characterized in that: the about ∮ 5mm of described water jacket bore dia.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910191307A CN101699051A (en) | 2009-10-30 | 2009-10-30 | Air cylinder cover of miniature type engine precast with cooling water jacket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910191307A CN101699051A (en) | 2009-10-30 | 2009-10-30 | Air cylinder cover of miniature type engine precast with cooling water jacket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101699051A true CN101699051A (en) | 2010-04-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910191307A Pending CN101699051A (en) | 2009-10-30 | 2009-10-30 | Air cylinder cover of miniature type engine precast with cooling water jacket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101699051A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103511118A (en) * | 2013-10-28 | 2014-01-15 | 东风汽车公司 | Multicylinder engine cylinder head with pre-cast cooling water jacket |
| CN109854404A (en) * | 2018-12-28 | 2019-06-07 | 潍柴动力股份有限公司 | Engine-cooling system and engine |
-
2009
- 2009-10-30 CN CN200910191307A patent/CN101699051A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103511118A (en) * | 2013-10-28 | 2014-01-15 | 东风汽车公司 | Multicylinder engine cylinder head with pre-cast cooling water jacket |
| CN103511118B (en) * | 2013-10-28 | 2016-06-29 | 东风汽车公司 | It is precast with the multicylinder engine cylinder head of cooling jacket |
| CN109854404A (en) * | 2018-12-28 | 2019-06-07 | 潍柴动力股份有限公司 | Engine-cooling system and engine |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100428 |