CN102562345B - Cylinder block of engine - Google Patents
Cylinder block of engine Download PDFInfo
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- CN102562345B CN102562345B CN201010620659.9A CN201010620659A CN102562345B CN 102562345 B CN102562345 B CN 102562345B CN 201010620659 A CN201010620659 A CN 201010620659A CN 102562345 B CN102562345 B CN 102562345B
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- cylinder
- cooling water
- engine
- water channel
- screw
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Abstract
The invention discloses a cylinder block of an engine. The cylinder block is connected with a cylinder head through studs in a fastening manner; threaded parts of screw holes, corresponding to the studs, in the cylinder block are located below a cylinder liner side within the travel range of a piston; after the fastening connection of the studs, a lower supporting cylinder head stud-screw hole structure is formed; a stress generated by a tightening torque for mounting the cylinder head is shifted down and dispersed to lower supporting parts of a cylinder liner by virtue of lower supporting cylinder cover studs; a plurality of transverse flow cooling waterways for cooling the wall between two adjacent cylinders are arranged in the wall between the two adjacent cylinders of cylinder block of the engine; and the cylinder liner adopts a sliding-matched thin-walled cylinder liner. According to the cylinder block of the engine, lower supporting screw holes are adopted to mount the cylinder head studs in the cylinder block, the stress deformation of the cylinder liner caused after the studs are screwed can be effectively avoided, and thus the cylinder bore is effectively enlarged to increase the displacement of the engine.
Description
Technical field
The present invention relates to engine mechanical technical field, particularly a kind of corresponding construction of engine cylinder cylinder-bore.
Background technique
At present, being connected of traditional engine cylinder and cylinder head adopts bolt mounting structure, and 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 this structure is Shortcomings part also, owing to being fastenedly connected the screw thread of rear bolt and being positioned at the upper side of cylinder liner piston stroke scope, bolt tightens rear bolt stress will concentrate on top, therefore the cylinder sleeve within the scope of piston stroke easily causes application distortion, cylinder-bore diameter is unfit to do greatly, thereby cannot by increasing cylinder bore dia, effectively increase the discharge capacity of motor, 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.
Summary of the invention
The present invention is in order to overcome defect in above-mentioned prior art, by adopting lower support screw that cylinder head bolt is installed in cylinder block, can effectively avoid the stress deformation that after bolting on, cylinder sleeve caused, thereby effectively expands cylinder bore dia to increase engine displacement.
For achieving the above object, the invention provides a kind of engine cylinder, cylinder block is fastenedly connected by double-screw bolt and cylinder head, in cylinder block, be positioned at the cylinder sleeve side-lower of piston stroke scope with the helical thread portion of the corresponding screw of double-screw bolt, double-screw bolt is fastenedly connected rear formation lower support cylinder head stud Screw hole structure, and the stress that lower support cylinder head stud produces the screw-down torque that cylinder head is installed 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 is less than 10mm; Gap width S between outer wall of cylinder jachet and lower support cylinder head bolts is 2-3mm.
Preferably, a plurality of crossing current cooling water channels for cooling two center walls are set in engine cylinder two adjacent cylinder partition, 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 for processing the feed hole of crossing current cooling water channel, after crossing current cooling water channel machines, passes through 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 light face, the corresponding site Spielpassung of light face and screw.
Preferably, 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 Water Cavity of Cylinder Head from the filling pipe end of cylinder upper-end surface from tangential water inlet.
Compared with prior art, the present invention 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 expand to greatest extent cylinder-bore diameter, realize motor and expand the object that cylinder increases discharge capacity and improves engine power;
2, the setting of crossing current cooling water channel can still can be carried out effective cooling to casing wall in the situation that wall thickness is less 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 object that expands cylinder hole.
Accompanying drawing explanation
Fig. 1 is the plan view of cylinder block of the present invention;
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 by reference to the accompanying drawings:
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, 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 lower support cylinder head bolts, M12-double-screw bolt diameter.
Embodiment
Below in conjunction with accompanying drawing, a specific embodiment of the present invention is described in detail, but is to be understood that protection scope of the present invention is not subject to the restriction of embodiment.
The present invention adopts lower support screw that cylinder head stud is installed, cylinder sleeve adopts the sliding cylinder block that thin wall cylinder cover expands engine displacement of joining.For realizing the cooling of two center wall structures, two cylinder-bore partitions adopt crossing current cooling water channel structure.Casing wall structure between two cylinder-bore refers to the casing wall structure between two adjacent cylinder-bore of engine cylinder; Crossing current cooling water channel structure between two casing walls refer to casing wall between the adjacent cylinder-bore of engine cylinder two in piston combustion stroke, processed multiple tracks horizontal for cooling water channel, allow 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 arranged on 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 arranged in cylinder block.
As shown in Figure 1 and Figure 2, engine cylinder of the present invention, by double-screw bolt and cylinder head (not shown), be fastenedly connected, in cylinder block 1, be positioned at the side-lower of the cylinder liner 2 of piston stroke scope with the helical thread portion 41 of the corresponding screw 4 of double-screw bolt, the upper face of double-screw bolt is light face, the corresponding site Spielpassung (can avoid like this double-screw bolt top directly to contact with screw the extruding causing the cylinder sleeve within the scope of piston stroke) of light face and screw.Double-screw bolt is fastenedly connected rear formation lower support cylinder head stud Screw hole structure, and the stress that lower support cylinder head stud produces the screw-down torque that cylinder head is installed moves down the lower support position that is dispersed to cylinder liner.The tapped hole design of double-screw bolt, at the lower support position (as shown in Figure 2) of cylinder sleeve, is beneficial to cylinder bolt power and is distributed to lower support position, can effectively reduce the cylinder bore deformation in piston combustion stroke.
Further as shown in Figure 1, owing to having adopted the structure of lower support cylinder cap tapped hole, the stress of two center walls reduces, and cylinder bore dia can be done greatly to greatest extent, make the ratio of cylinder diameter Φ and cylinder core distance D be greater than 0.9, and the thick value d of two center walls is less than 10mm.
Further as shown in Figure 4, the gap width S between outer wall of cylinder jachet and lower support cylinder head bolts is 2-3mm.
Further as shown in Figure 3,4, a plurality of crossing current cooling water channels 7 for cooling two center walls are set in 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 for processing the feed hole of crossing current cooling water channel, after crossing current cooling water channel machines, passes through 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, adopt grouping to carry out transition fit assembling with coordinating of cylinder block 1, cylinder liner 2 is upper seam supporting structure.Employing thin wall cylinder cover can be more reliable than the traditional dry cylinder liner cylinder block without cylinder sleeve, and can reach the object that expands cylinder hole.
Further as shown in Figure 1,5, 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 Water Cavity of Cylinder Head (not shown) from the filling pipe end 5 of cylinder upper-end surface from this tangential water inlet 6.
The present invention is displaced downwardly to the installation tapped hole of cylinder head at the lower support position of cylinder liner, disperses to move down the stress of cylinder head make-up torque, thereby expands to greatest extent cylinder-bore diameter, realizes motor and expands the object that cylinder increases discharge capacity; The setting of crossing current cooling water channel can still can be carried out effective cooling to casing wall less in the situation that center wall is thick; Cylinder sleeve adopts to slide joins thin wall cylinder cover, can make cylinder block more reliable, and can reach the object that expands cylinder hole.
Disclosed is above only a specific embodiment of the present invention, and still, the present invention is not limited thereto, and the changes that any person skilled in the art can think of all should fall into protection scope of the present invention.
Claims (9)
1. an engine cylinder, described cylinder block is fastenedly connected by double-screw bolt and cylinder head, it is characterized in that, in described cylinder block, be positioned at the cylinder sleeve side-lower of piston stroke scope with the helical thread portion of the corresponding screw of described double-screw bolt, double-screw bolt is fastenedly connected rear formation lower support cylinder head stud Screw hole structure, and the stress that described lower support cylinder head stud produces the screw-down torque that cylinder head is installed moves down the lower support position that is dispersed to cylinder liner; Described double-screw bolt is tightened through block jacket and described cylinder block.
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 is 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 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 for cooling two center walls are set in 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 for processing the feed hole of crossing current cooling water channel, and crossing current cooling water channel machines rear by feed hole described in the shutoff of bowl-type patch.
7. according to the engine cylinder described in any one in 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 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 cylinder sleeve described in each, and cooling water flows into and flows out and then flow to Water Cavity of Cylinder Head 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 |
|---|---|---|---|
| CN201010620659.9A CN102562345B (en) | 2010-12-30 | 2010-12-30 | Cylinder block of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010620659.9A CN102562345B (en) | 2010-12-30 | 2010-12-30 | Cylinder block of engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102562345A CN102562345A (en) | 2012-07-11 |
| CN102562345B true CN102562345B (en) | 2014-01-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010620659.9A Active CN102562345B (en) | 2010-12-30 | 2010-12-30 | Cylinder block of engine |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT513153B1 (en) * | 2012-09-25 | 2014-02-15 | Avl List Gmbh | Internal combustion engine with a cylinder head designed in common for several cylinders |
| CN105351108A (en) * | 2015-10-02 | 2016-02-24 | 李军 | Engine cylinder head bowl-shaped plug and process method thereof |
| CN106570279B (en) * | 2016-11-08 | 2019-11-05 | 广西玉柴机器股份有限公司 | The evaluation method of engine piston and cylinder head minimum clearance |
| CN108425761A (en) * | 2018-04-03 | 2018-08-21 | 南京世界村汽车动力有限公司 | A kind of housing structure of automobile engine |
| US10781769B2 (en) * | 2018-12-10 | 2020-09-22 | GM Global Technology Operations LLC | Method of manufacturing an engine block |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9425718D0 (en) * | 1994-12-20 | 1995-02-22 | Rover Group | A block structure for an internal combustion engine |
| GB9425716D0 (en) * | 1994-12-20 | 1995-02-22 | Rover Group | An internal combustion engine |
| DE60220003T2 (en) * | 2001-09-28 | 2008-01-10 | Kubota Corp. | Multi-cylinder internal combustion engine |
| CN201934197U (en) * | 2010-12-30 | 2011-08-17 | 广西玉柴机器股份有限公司 | Cylinder body for engine |
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- 2010-12-30 CN CN201010620659.9A patent/CN102562345B/en active Active
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| CN102562345A (en) | 2012-07-11 |
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