CN201165910Y - Engine with closed cylinder hole structure - Google Patents
Engine with closed cylinder hole structure Download PDFInfo
- Publication number
- CN201165910Y CN201165910Y CNU2008200662223U CN200820066222U CN201165910Y CN 201165910 Y CN201165910 Y CN 201165910Y CN U2008200662223 U CNU2008200662223 U CN U2008200662223U CN 200820066222 U CN200820066222 U CN 200820066222U CN 201165910 Y CN201165910 Y CN 201165910Y
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- China
- Prior art keywords
- cylinder
- cylinder head
- bore
- engine
- cylinder block
- 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 - Lifetime
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- 239000011148 porous material Substances 0.000 claims description 9
- 238000007789 sealing Methods 0.000 abstract description 6
- 230000006835 compression Effects 0.000 abstract description 5
- 238000007906 compression Methods 0.000 abstract description 5
- 238000001816 cooling Methods 0.000 description 8
- 238000005457 optimization Methods 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 3
- 238000010304 firing Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 206010039509 Scab Diseases 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 239000000567 combustion gas Substances 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 239000000110 cooling liquid Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000010721 machine oil Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
Images
Landscapes
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The engine with the closed cylinder hole structure comprises a cylinder cover, a cylinder body and a piston and is characterized in that a cylinder body top plate for sealing the upper end of the cylinder hole is arranged at the upper end of the cylinder hole of the cylinder body, the cylinder body top plate and the cylinder body are of an integral structure, and a gas inlet valve hole and a gas outlet valve hole are formed in the cylinder body top plate. The engine can improve the rigidity of the cylinder body, furthest reduces the deformation of the cylinder hole, and is suitable for a spark ignition engine or a compression ignition engine.
Description
Technical field
The utility model relates to motor, relates in particular to a kind of closed cylinder pore structure engine, and this motor can be spark-ignition engine, also can be compression ignition engine.
Background technique
Along with Vehicle Emission Control is day by day strict, or even harsh, organizing of corresponding combustion process of the internal-combustion engine is more and more meticulousr, jet pressure is more and more higher, the maximum outbreak pressure of internal-combustion engine is more and more higher, has surpassed 22MPa now, also has the trend that further improves in the future.In addition, along with emission limit reduces, oil consumption is also more and more responsive to the influence of discharging.
In order to improve the bearing capacity of cylinder-bore, must improve cylinder block rigidity, reduce cylinder-bore distortion.The reason of consumption of lubricating oil and approach have been well-known.Admitted facts are that the passage between cylinder-bore and the piston set is the central core of circulation of consumption of lubricating oil.Cylinder-bore distortion is the key factor that influences oil consumption.
Cause cylinder-bore distortion, mainly contain following factor:
1. structure: block structure rigidity is on the low side.For guaranteeing gas sealing, the cylinder head bolt of conventional engines is arranged in around the cylinder-bore, and the cylinder head bolt pretightening force is very big to the influence of cylinder-bore distortion.
2. load: working load is big, and erection stress (cylinder head bolt pretightening force) is big or the like, causes cylinder-bore distortion.
3. coolant temperature skewness around the cylinder liner.
Working load and erection stress are the design needs.The coolant temperature inequality is a secondary cause.The main factor that influences cylinder-bore distortion is block structure rigidity and cylinder head bolt (deployment scenarios and pretightening force).
In order to improve the cylinder block bearing capacity, guarantee to stablize, reduce oil consumption constantly, must enough pay attention to cylinder-bore distortion, aspect cylinder-bore, take measure as much as possible to solve the rigidity problem of cylinder-bore.
In addition, conventional engines is in order to guarantee gas sealing, and cylinder bolt is arranged in around the cylinder-bore, limited the layout of intake duct, air outlet flue and the cooling jacket of motor greatly, both influenced the lifting of engine performance, influences the reliability of motor again.
Prior art is for to be fastened on cylinder head reliably on the cylinder block, and guarantees the sealing of high temperature, high-pressure gas, and six of every cylinder or eight cylinder head bolts must be tried one's best near cylinder-bore; Air flue and water jacket must be avoided the cylinder bolt lug when arranging, when air flue or water jacket spatially can't be avoided the cylinder bolt lug, just must reduce air flue or water jacket cross section, and this will sacrifice the inlet and outlet performance of air flue and the current passing capacity of water jacket.Final result is that inlet and outlet road performance is bad, can cause engine power deficiency, deterioration of emission; The current passing capacity of water jacket is not enough, will make the cooling capacity deficiency, and engine heat load increases, and influences the reliability and the durability of motor.
Because the existence of cylinder head base plate and cylinder block top board, cylinder head jacket and block jacket can not directly be communicated with, and can only be communicated with by the aperture on the head gasket; When cast sand core of water jacket surrounded by molten metal fully, at some small construction places as the terminal easy-sintering of water jacket, scab, cause the water jacket flow area to reduce.
The pressure of explosion that the cylinder combustion gas firing produces is very big, generally reaches more than the 160bar, guarantees that under so big pressure sealing, cylinder bolt must select the bolt of 10.9 grades and above grade for use.
The model utility content
The purpose of this utility model is in order to solve the deficiency that the above-mentioned background introduction exists, and proposes a kind ofly can improve cylinder block rigidity, reduces the closed cylinder pore structure engine of cylinder-bore distortion to greatest extent.
For achieving the above object, the utility model adopts following technological scheme: a kind of closed cylinder pore structure engine, comprise cylinder head, cylinder block and piston, it is characterized in that on the cylinder-bore of described cylinder block, being provided with cylinder block top board with the cylinder-bore upper end closed, this cylinder block top board and cylinder block are overall structure, and described cylinder block top board is provided with inlet valve hole and air release valve hole.
Be respectively arranged with inlet valve seat and delivery valve seat in inlet valve hole on described cylinder block top board and the air release valve hole.
Above-mentioned cylinder head can be made of single cylinder head body, has saved traditional cylinder head base plate.
The layout of described cylinder head bolt is positioned at the cylinder block edge away from cylinder-bore.Thereby make the layout of intake duct, air outlet flue and cooling jacket more favourable.
The described water jacket that is positioned at the cylinder head bottom is the open type water jacket.
Design proposal of the present utility model is different from traditional concept, compares with conventional engines, and maximum characteristics of the present utility model are:
1. cancel the cylinder head base plate, cylinder head does not have traditional base plate.
2. cylinder block is pushed up on the plane and move, and closed cylinder hole end face, the rigidity of cylinder block is significantly improved.
3. cylinder head bolt changes.Because cylinder head bolt no longer bears the gaseous-pressure of motor, and the static strength of cylinder bolt and the requirement of fatigue strength are reduced greatly, thoroughly eliminates the influence of cylinder head bolt to the cylinder bore deformation.
The function of starting described in the utility model improves cylinder block rigidity, reduces cylinder-bore distortion to greatest extent, is applicable to spark-ignition engine or compression ignition engine.
Description of drawings
Fig. 1 is spark-ignition engine example structure figure.
Fig. 2 is compression ignition engine example structure figure.
Specific embodiments
Referring to accompanying drawing 1 and accompanying drawing 2, the utility model can be a spark-ignition engine, also can be compression ignition engine, referring to Fig. 1 and Fig. 2.Comprise cylinder head 1, cylinder block 2 and piston 3, on the cylinder-bore of described cylinder block 2, be provided with cylinder block top board 9 with the cylinder-bore upper end closed, this cylinder block top board 9 is an overall structure with cylinder block 2, arrange on the cylinder block top board 9 in cylinder-bore for the inlet valve seat 4 of placing intake valve with for the delivery valve seat 5 of placing exhaust valve, described cylinder head 1 is made of single cylinder head body, no cylinder head base plate.
The utility model engine chamber space is made up of plane (comprising the inlet and outlet door) on piston 3 end faces, cylinder-bore and the cylinder-bore.
Basic boom sets out thus, and the structure of motor described in the utility model and conventional engines have following variation:
1, inlet valve seat 4 and delivery valve seat 5 are arranged on the interior cylinder block top board 9 of cylinder-bore, constitute the part of firing chamber.Because formed the firing chamber in the cylinder-bore, cylinder head 1 is no longer carried high voltage load, 1 of cylinder head is born low pressure seals such as cooling liquid, machine oil and inlet and outlet.Therefore, the sealing gasket 6 between cylinder block 2 and cylinder head 1 is compared with the head gasket of conventional construction motor, and it requires to reduce greatly, and structure can be simplified greatly.
2, because cylinder head 1 is single structure, do not have base plate, water jacket is an open type, makes as the water jacket in the engine valve bridge of the nose district 8 of key position to be convenient to casting.Thereby the cooling problem in engine valve bridge of the nose district 8 is solved preferably.
3, same reason helps the optimization of cylinder head 1 water jacket.For guaranteeing current accurately tissue and optimization, can take machining mode, accurately control the shape and the size in key position water jacket (as bridge of the nose district 8).
4, same reason because cylinder head bolt 7 no longer bears the gaseous-pressure of motor, thereby reduces greatly to the static strength of cylinder head bolt 7 and the requirement of fatigue strength, and 7 need of cylinder head bolt with plain bolt just.Simultaneously, compare with conventional engines, the deformation effect of 7 pairs of cylinder-bore of cylinder head bolt is very little, and its arrangement requirement to cylinder head bolt 7 is reduced greatly.Cylinder head bolt is arranged in from cylinder-bore position far away, its position can freely be adjusted to a great extent, therefore can not produce any restriction to the spatial position of air flue and water jacket, it is enough big that the air flue flow area can be done as required, and the restriction aspect of water jacket just has only the spatial constraints effect of air flue.The detonation pressure that combustion gas produces acts on the cylinder block, and cylinder head bolt only connects cylinder head and cylinder block, adopts the bolt of general grade to get final product.
5, to after the reduction of cylinder head bolt 7 layout requirement, bring benefit for the optimization of engine air flue.Air flue no longer is subjected to the restriction of cylinder head bolt, and air flue air-flow smoothness, performance improve greatly.
6,, bring benefit also for the optimization of engine water jacket to after the reduction of cylinder head bolt 7 layout requirement.The space that water jacket is arranged is bigger, helps improving the cooling performance to motor bridge of the nose district 8 key positions such as grade.
One ring corresponding cylinder hole site when 7, the key position of engine cooling is valve bridge of the nose district 8 and piston top dead center.After adopting new structure, water jacket position and structure are further optimized, and the cooling problem of these key positions is improved greatly.Cancelled the cylinder head base plate, block jacket and cylinder head jacket can be made of one, and the area of water jacket circulation is big, and resistance to water-flow is little, helps the cooling of motor, and the power that is used for the pumping cooling liquid is also less.The fine structure of jacket core easy-sintering, scab can guarantee its shape and size with method for processing during casting.
8, the cylinder-bore honing of the utility model motor, motor assembling etc. are different with the conventional construction motor.Can solve well by approach such as structure optimization, technology and employing finished product cylinder sleeves.
Claims (5)
1, a kind of closed cylinder pore structure engine, comprise cylinder head, cylinder block and piston, it is characterized in that on the cylinder-bore of described cylinder block, being provided with cylinder block top board with the cylinder-bore upper end closed, this cylinder block top board and cylinder block are overall structure, and described cylinder block top board is provided with inlet valve hole and air release valve hole.
2, a kind of closed cylinder pore structure engine according to claim 1 is characterized in that being respectively arranged with inlet valve seat and delivery valve seat in inlet valve hole on described cylinder block top board and the air release valve hole.
3, a kind of closed cylinder pore structure engine according to claim 1 is characterized in that described cylinder head is made of single cylinder head body, no cylinder head base plate.
4, a kind of closed cylinder pore structure engine according to claim 1, the layout that it is characterized in that described cylinder head bolt is positioned at the cylinder block edge away from cylinder-bore.
5,, it is characterized in that the described water jacket that is positioned at the cylinder head bottom is the open type water jacket according to the described a kind of closed cylinder pore structure engine of arbitrary claim in the claim 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200662223U CN201165910Y (en) | 2008-03-27 | 2008-03-27 | Engine with closed cylinder hole structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200662223U CN201165910Y (en) | 2008-03-27 | 2008-03-27 | Engine with closed cylinder hole structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201165910Y true CN201165910Y (en) | 2008-12-17 |
Family
ID=40191296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200662223U Expired - Lifetime CN201165910Y (en) | 2008-03-27 | 2008-03-27 | Engine with closed cylinder hole structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201165910Y (en) |
-
2008
- 2008-03-27 CN CNU2008200662223U patent/CN201165910Y/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: DONGFENG COMMERCIAL VEHICLE CO., LTD. Free format text: FORMER OWNER: DONGFENG AUTOMOBILE CO., LTD. Effective date: 20130918 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 430054 WUHAN, HUBEI PROVINCE TO: 442001 SHIYAN, HUBEI PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130918 Address after: 442001 Shiyan City, Hubei province city Zhangwan District Road No. 2 Patentee after: DONGFENG TRUCKS Co.,Ltd. Address before: 430054 No. 10 Dongfeng Avenue, Zhuankou economic and Technological Development Zone, Hanyang District, Hubei, Wuhan, Wuhan Patentee before: DONGFENG MOTER Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20081217 |