CN201934197U - Cylinder body for engine - Google Patents
Cylinder body for engine Download PDFInfo
- Publication number
- CN201934197U CN201934197U CN2010206967059U CN201020696705U CN201934197U CN 201934197 U CN201934197 U CN 201934197U CN 2010206967059 U CN2010206967059 U CN 2010206967059U CN 201020696705 U CN201020696705 U CN 201020696705U CN 201934197 U CN201934197 U CN 201934197U
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- CN
- China
- Prior art keywords
- cylinder
- cooling water
- engine
- lower support
- water channel
- 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 discloses a cylinder body for an engine, wherein, the cylinder body is in fastening connection with a cylinder head through a stud; a screw thread part of a screw hole which is formed on the cylinder body and corresponds to the stud is positioned at the side lower part of a cylinder sleeve within the travel range of a piston; a lower support cylinder head stud-screw hole structure is formed after the stud is in fastening connection with the cylinder head; a lower support cylinder head stud can lead the stress generated by tightening torque when the cylinder head is installed to be dispersed downwards to a lower support part of the cylinder sleeve; a plurality of transverse flow cooling water channels used for cooling walls between two cylinders are arranged between the walls of the two adjacent cylinders of the cylinder body for the engine; and the cylinder sleeve adopts a transition fit thin-walled cylinder sleeve. In the cylinder body, the cylinder head stud can be installed through a lower support screw hole, so that the stress deformation of the cylinder sleeve can be avoided effectively after the stud is screwed, and the diameter of a cylinder hole can be enlarged effectively so as to increase the discharge volume of the engine.
Description
Technical field
The utility model relates to the engine mechanical technical field, particularly a kind of corresponding construction of engine cylinder cylinder-bore.
Background technique
At present, the bolt mounting structure is adopted in being connected of traditional engine cylinder and cylinder head, and promptly the end face in cylinder block is fastenedly connected by bolt and cylinder head, and this Placement is simple in structure, good manufacturability and being widely used.But also there is deficiency in this structure, because the screw thread that is fastenedly connected the back bolt is positioned at the upper side of cylinder liner piston stroke scope, bolt tightens the back bolt stress will concentrate on top, therefore the cylinder sleeve in the piston stroke scope easily causes and uses distortion, make the cylinder-bore diameter be unfit to do greatly, thereby can't effectively increase the discharge capacity of motor by increasing the cylinder bore dia, the ratio of cylinder-bore diameter and cylinder-bore centre distance is little simultaneously, and the compactedness that can cause engine cylinder-body to be arranged is bad.
The model utility content
The utility model is in order to overcome defective in the above-mentioned prior art, by in cylinder block, adopting the lower support screw cylinder head bolt is installed, the stress deformation that after can effectively avoiding bolting on cylinder sleeve is caused, thus the cylinder bore dia effectively enlarged to increase engine displacement.
For realizing above-mentioned model utility purpose, the utility model provides a kind of engine cylinder, cylinder block is fastenedly connected by double-screw bolt and cylinder head, be positioned at the cylinder sleeve side-lower of piston stroke scope on the cylinder block with the helical thread portion of the corresponding screw of double-screw bolt, double-screw bolt is fastenedly connected the back and forms lower support cylinder head stud Screw hole structure, and the stress that the lower support cylinder head stud will be installed the screw-down torque generation of cylinder head moves down the lower support position that is dispersed to cylinder liner.
Preferably, the ratio of cylinder sleeve internal diameter Φ and adjacent cylinder centre distance D is greater than 0.9, and between described adjacent two cylinders wall thickness value d less than 10mm; Gap width S between outer wall of cylinder jachet and the lower support cylinder head bolts is 2-3mm.
Preferably, a plurality of crossing current cooling water channels that are used to cool off two center walls are set in the engine cylinder two adjacent cylinder partition, the crossing current cooling water channel is connected between corresponding two double-screw bolt screws and with the cooling water channel system of cylinder block.
Preferably, the diameter of phi of crossing current cooling water channel ' be 3mm.
Preferably, the outside of crossing current cooling water channel is provided with the feed hole that is used to process the crossing current cooling water channel, and the crossing current cooling water channel machines the back by this feed hole of bowl-type patch shutoff.
Preferably, cylinder sleeve is the sliding thin wall cylinder cover of joining.
Preferably, the upper face of double-screw bolt is the light face, the corresponding site Spielpassung of light face and screw.
Preferably, the cooling water channel system is provided with tangential water inlet in the lower end of each cylinder sleeve, and cooling water flows into and flows out and then flow to the cylinder cap water cavity from the filling pipe end of cylinder upper-end surface from tangential water inlet.
Compared with prior art, the utlity model has following beneficial effect:
1, the installation tapped hole of cylinder head is displaced downwardly to the lower support position of cylinder liner, disperses to move down the stress of cylinder head make-up torque, thereby enlarge the cylinder-bore diameter to greatest extent, realize that motor expands the purpose that cylinder increases discharge capacity and improves engine power;
2, the setting of crossing current cooling water channel can still can effectively be cooled off casing wall under the less situation of wall thickness between two cylinder holes;
3, cylinder sleeve adopts to slide and joins thin wall cylinder cover, can make cylinder block more reliable, and can reach the purpose that enlarges the cylinder hole.
Description of drawings
Fig. 1 is the plan view of the utility model cylinder block;
Fig. 2 is that the A-A of Fig. 1 is to sectional view;
Fig. 3 is that the C-C of Fig. 1 is to sectional view;
Fig. 4 is that the D-D of Fig. 3 is to sectional view;
Fig. 5 is that the B-B of Fig. 2 is to sectional view.
Mark the following drawings mark thereon in conjunction with the accompanying drawings:
The 1-cylinder block, 2-cylinder liner, 3-bowl-type patch, 4-lower support cylinder head bolts screw, 41-screw helical thread portion, 5-filling pipe end, the 6-water intake, the horizontal cooling water channel of 7-, Φ-cylinder sleeve internal diameter, D-adjacent cylinder centre distance, wall thickness value between adjacent two cylinders of d-, the diameter of Φ '-crossing current cooling water channel, the gap width between S-outer wall of cylinder jachet and the lower support cylinder head bolts, M12-double-screw bolt diameter.
Embodiment
Below in conjunction with accompanying drawing, an embodiment of the present utility model is described in detail, but is to be understood that protection domain of the present utility model is not subjected to the restriction of embodiment.
The utility model adopts the lower support screw that cylinder head stud is installed, cylinder sleeve adopts the sliding cylinder block that thin wall cylinder cover enlarges engine displacement of joining.For realizing the cooling of two center wall structures, two cylinder-bore partitions adopt the crossing current cooling water channel structure.Casing wall structure between two cylinder-bore is meant the casing wall structure between the two adjacent cylinder-bore of engine cylinder; Crossing current cooling water channel structure between two casing walls is meant that the casing wall between engine cylinder two adjacent cylinder-bore processed the horizontal water channel that is used to cool off of multiple tracks in the piston combustion stroke, allows partition between water quench two cylinder-bore; Lower support cylinder head stud Screw hole structure refers at the lower support position of cylinder liner thread mill drilling, so that cylinder head stud through the water jacket of cylinder block, is installed in the lower support parts of cylinder liner; Sliding mounting structure of joining thin-wall cylinder casing refers to adopt thin wall cylinder cover, and sliding joining is installed on the cylinder block.
As shown in Figure 1 and Figure 2, engine cylinder of the present utility model, be fastenedly connected by double-screw bolt and cylinder head (not shown), be positioned at the side-lower of the cylinder liner 2 of piston stroke scope on the cylinder block 1 with the helical thread portion 41 of the corresponding screw 4 of double-screw bolt, the upper face of double-screw bolt is the light face, the corresponding site Spielpassung (can avoid double-screw bolt top directly to contact the extruding that causes the cylinder sleeve in the piston stroke scope with screw like this) of light face and screw.Double-screw bolt is fastenedly connected the back and forms lower support cylinder head stud Screw hole structure, and the stress that the lower support cylinder head stud will be installed the screw-down torque generation of cylinder head moves down the lower support position that is dispersed to cylinder liner.The tapped hole design of double-screw bolt is beneficial to cylinder bolt power and is distributed to the lower support position at the lower support position (as shown in Figure 2) of cylinder sleeve, can effectively reduce the cylinder bore deformation in the piston combustion stroke.
Further as shown in Figure 1, owing to adopted the structure of lower support cylinder cap tapped hole, the stress of two center walls reduces, and the cylinder bore dia can be done greatly to greatest extent, make the ratio of cylinder diameter Φ and cylinder core distance D greater than 0.9, and the thick value of two center walls d is less than 10mm.
Further as shown in Figure 4, the gap width S between outer wall of cylinder jachet and the lower support cylinder head bolts is 2-3mm.
Further shown in Fig. 3,4, a plurality of crossing current cooling water channels 7 that are used to cool off two center walls are set in the engine cylinder two adjacent cylinder partition, and crossing current cooling water channel 7 is connected between corresponding two double-screw bolt screws and with the cooling water channel system of cylinder block, cylinder head.The diameter of phi of crossing current cooling water channel ' be preferably 3mm.The outside of crossing current cooling water channel is provided with the feed hole that is used to process the crossing current cooling water channel, and the crossing current cooling water channel machines the back by this feed hole of bowl-type patch 3 shutoff.
Further as shown in Figure 2, cylinder sleeve 2 is the sliding thin wall cylinder cover of joining.Adopt thin-wall cylinder casing, carry out the transition fit assembling with adopting grouping cooperating of cylinder block 1, cylinder liner 2 is last seam supporting structure.The employing thin wall cylinder cover can be more reliable than traditional dry cylinder liner cylinder block of no cylinder sleeve, and can reach the purpose that enlarges the cylinder hole.
Further shown in Fig. 1,5, the cooling water channel system is provided with tangential water inlet 6 in the lower end of each cylinder sleeve, and cooling water flows into and flows out and then flow to cylinder cap water cavity (not shown) from the filling pipe end 5 of cylinder upper-end surface from this tangential water inlet 6.
The utility model is displaced downwardly to the lower support position of cylinder liner with the installation tapped hole of cylinder head, disperses to move down the stress of cylinder head make-up torque, thereby enlarges the cylinder-bore diameter to greatest extent, realizes that motor expands the purpose that cylinder increases discharge capacity; The setting of crossing current cooling water channel can still can effectively be cooled off casing wall under the thick less situation of center wall; Cylinder sleeve adopts to slide joins thin wall cylinder cover, can make cylinder block more reliable, and can reach the purpose that enlarges the cylinder hole.
More than disclosed only be a specific embodiment of the present utility model, still, the utility model is not limited thereto, any those skilled in the art can think variation all should fall into protection domain of the present utility model.
Claims (9)
1. engine cylinder, described cylinder block is fastenedly connected by double-screw bolt and cylinder head, it is characterized in that, be positioned at the cylinder sleeve side-lower of piston stroke scope on the described cylinder block with the helical thread portion of the corresponding screw of described double-screw bolt, double-screw bolt is fastenedly connected the back and forms lower support cylinder head stud Screw hole structure, and the stress that described lower support cylinder head stud will be installed the screw-down torque generation of cylinder head moves down the lower support position that is dispersed to cylinder liner.
2. engine cylinder according to claim 1 is characterized in that, the ratio of described cylinder sleeve internal diameter Φ and adjacent cylinder centre distance D is greater than 0.9, and between described adjacent two cylinders wall thickness value d less than 10mm.
3. engine cylinder according to claim 2 is characterized in that, the gap width S between described outer wall of cylinder jachet and the lower support cylinder head bolts is 2-3mm.
4. engine cylinder according to claim 2, it is characterized in that, a plurality of crossing current cooling water channels that are used to cool off two center walls are set in the described engine cylinder two adjacent cylinder partition, and described crossing current cooling water channel is connected between corresponding two double-screw bolt screws and with the cooling water channel system of cylinder block.
5. engine cylinder according to claim 4 is characterized in that, the diameter of phi of described crossing current cooling water channel ' be 3mm.
6. engine cylinder according to claim 4 is characterized in that, the outside of described crossing current cooling water channel is provided with the feed hole that is used to process the crossing current cooling water channel, and the crossing current cooling water channel machines the back by the described feed of bowl-type patch shutoff hole.
7. according to any described engine cylinder in the claim 1 to 6, it is characterized in that described cylinder sleeve is the sliding thin wall cylinder cover of joining.
8. engine cylinder according to claim 1 is characterized in that, the upper face of described double-screw bolt is the light face, the corresponding site Spielpassung of described light face and screw.
9. engine cylinder according to claim 4, it is characterized in that, described cooling water channel system is provided with tangential water inlet in the lower end of each described cylinder sleeve, and cooling water flows into and flows out and then flow to the cylinder cap water cavity from the filling pipe end of cylinder upper-end surface from described tangential water inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206967059U CN201934197U (en) | 2010-12-30 | 2010-12-30 | Cylinder body for engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206967059U CN201934197U (en) | 2010-12-30 | 2010-12-30 | Cylinder body for engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201934197U true CN201934197U (en) | 2011-08-17 |
Family
ID=44445718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206967059U Expired - Fee Related CN201934197U (en) | 2010-12-30 | 2010-12-30 | Cylinder body for engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201934197U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562345A (en) * | 2010-12-30 | 2012-07-11 | 广西玉柴机器股份有限公司 | Cylinder block of engine |
| CN103185057A (en) * | 2011-12-29 | 2013-07-03 | 广西玉柴机器股份有限公司 | Cylinder cover bolt component for water jacket of cylinder body |
| CN105351108A (en) * | 2015-10-02 | 2016-02-24 | 李军 | Engine cylinder head bowl-shaped plug and process method thereof |
-
2010
- 2010-12-30 CN CN2010206967059U patent/CN201934197U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562345A (en) * | 2010-12-30 | 2012-07-11 | 广西玉柴机器股份有限公司 | Cylinder block of engine |
| CN103185057A (en) * | 2011-12-29 | 2013-07-03 | 广西玉柴机器股份有限公司 | Cylinder cover bolt component for water jacket of cylinder body |
| CN105351108A (en) * | 2015-10-02 | 2016-02-24 | 李军 | Engine cylinder head bowl-shaped plug and process method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110817 Termination date: 20161230 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |