CN112983670A - Simulation cylinder cover and cylinder hole machining process - Google Patents
Simulation cylinder cover and cylinder hole machining process Download PDFInfo
- Publication number
- CN112983670A CN112983670A CN202110180712.6A CN202110180712A CN112983670A CN 112983670 A CN112983670 A CN 112983670A CN 202110180712 A CN202110180712 A CN 202110180712A CN 112983670 A CN112983670 A CN 112983670A
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- Prior art keywords
- cylinder
- water jacket
- cylinder cover
- hole
- connecting hole
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- 238000004088 simulation Methods 0.000 title claims abstract description 17
- 238000003754 machining Methods 0.000 title claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 41
- 238000000034 method Methods 0.000 claims abstract description 22
- 238000010438 heat treatment Methods 0.000 claims abstract description 21
- 238000005516 engineering process Methods 0.000 claims abstract description 9
- 230000005674 electromagnetic induction Effects 0.000 claims description 25
- 238000004804 winding Methods 0.000 claims description 4
- 238000002485 combustion reaction Methods 0.000 abstract description 20
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/24—Cylinder heads
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The invention discloses a simulation cylinder cover and a cylinder hole processing technology, wherein the simulation cylinder cover comprises a cylinder cover body, a process cylinder cushion and a water jacket heating device which are sequentially connected from top to bottom, N first connecting holes used for being connected with a cylinder block are formed in the cylinder cover body, second connecting holes are respectively formed in the positions, corresponding to the N first connecting holes, of the process cylinder cushion, the water jacket heating device can be inserted into an open water jacket of the cylinder block, and the water jacket heating device can heat the open water jacket and a cylinder hole. The simulated cylinder cover and the cylinder hole processing technology provided by the invention can enable the cylinder hole to have thermal deformation already during processing, and the roundness and cylindricity of the cylinder hole are better when an internal combustion engine works, so that the tension of a piston ring of the internal combustion engine can be lower, the friction loss is finally reduced, the oil consumption is reduced, and the performance of the internal combustion engine is favorably improved.
Description
Technical Field
The invention relates to the technical field of internal combustion engine processing, in particular to a process for simulating a cylinder cover and a cylinder hole.
Background
The deformation of the cylinder hole is a common phenomenon existing in an internal combustion engine, because the cylinder body can achieve better roundness and cylindricity after being processed, but in order to overcome explosion pressure and meet the sealing requirement of a cylinder gasket, the axial force of the cylinder head bolt is very large, and therefore, the cylinder hole can deform under the action of the huge axial force of the cylinder head bolt during assembly to influence the roundness and the cylindricity. The control of the deformation of the cylinder hole is one of the key measures for ensuring the performance of the engine, because if the deformation of the cylinder hole of the engine is too large, a series of adverse effects are brought, or problems such as cylinder pulling, too high oil consumption, large air leakage, large friction loss and the like are caused, and finally the performance of the engine is reduced, and even the reliability of the engine body and the piston can be caused. And therefore the deformation of the cylinder bore needs to be strictly controlled. In order to control deformation of a cylinder hole, a technology which is mainstream at present is to avoid deformation of the cylinder hole by simulating a cylinder cover technology, but the deformation of the cylinder hole at normal temperature is only controlled, but the deformation of the cylinder hole in a heat engine of an internal combustion engine cannot be controlled.
Disclosure of Invention
In view of the above, the present invention aims to overcome the defects in the prior art, and provide a simulated cylinder head and a cylinder hole processing process, which can make the cylinder hole have thermal deformation already during processing, and make the roundness and cylindricity of the cylinder hole better during the operation of an internal combustion engine, so that the tension of a piston ring of the internal combustion engine can be lower, and finally reduce friction loss, reduce oil consumption, and facilitate the improvement of the performance of the internal combustion engine.
The simulation cylinder cover comprises a cylinder cover body, a process cylinder cushion and a water jacket heating device which are sequentially connected from top to bottom, wherein N first connecting holes used for being connected with a cylinder block are formed in the cylinder cover body, second connecting holes are respectively formed in positions, corresponding to the N first connecting holes, of the process cylinder cushion, the water jacket heating device can be inserted into an open water jacket of the cylinder block, and the water jacket heating device can heat the open water jacket and a cylinder hole.
Further, the water jacket heating device is an electromagnetic induction coil, the left side and the right side of the top of the electromagnetic induction coil are respectively provided with a coil wiring end, and the shape of the electromagnetic induction coil is matched with that of the open water jacket.
Further, the winding density of the electromagnetic induction coil decreases from top to bottom.
Further, the cylinder cap body includes the cylinder cap upper plate and sets up the cylinder cap hypoplastron of the downside of cylinder cap upper plate, be provided with the first connecting hole of a N upside on the cylinder cap upper plate, be provided with the first connecting hole of a N downside on the cylinder cap hypoplastron, N the first connecting hole of upside and N are individual the position one-to-one of the first connecting hole of downside, N first connecting hole is equallyd divide and is do not by one the first connecting hole of upside and one the first connecting hole of downside is constituteed.
Further, the cylinder cover upper plate and the cylinder cover lower plate are positioned through M positioning pin bolts, and the cylinder cover upper plate and the cylinder cover lower plate are connected through P first bolts.
Further, the process cylinder gasket is connected with the cylinder cover lower plate through T second bolts.
Furthermore, equipment connecting holes for connecting with processing equipment are formed in the front side wall, the rear side wall, the left side wall and the right side wall of the upper plate of the cylinder cover; and coil leading-out holes for accommodating coil wiring terminals are formed in the left side wall and the right side wall of the lower plate of the cylinder cover.
Furthermore, the positions of the cylinder cover upper plate, the cylinder cover lower plate and the process cylinder cushion corresponding to the cylinder holes are provided with processing through holes for a cutter of processing equipment to pass through.
The invention also provides a cylinder hole processing technology, which comprises the following steps:
s1, connecting the simulation cylinder cover with a machining device;
s2, inserting the electromagnetic induction coil into the open type water jacket, and sequentially passing N third bolts through N first connecting holes and N second connecting holes to connect the simulation cylinder cover and the cylinder block;
s3, connecting the two coil terminals with the positive and negative electrodes of a power supply respectively, heating the open water jacket and the cylinder hole by supplying power to the electromagnetic induction coil, and stopping supplying power to the electromagnetic induction coil when the temperature field of the cylinder hole reaches a preset temperature field;
and S4, starting the processing equipment to process the cylinder hole of the cylinder block, and obtaining a finished cylinder block product after finishing processing.
The invention has the beneficial effects that: the invention discloses a simulated cylinder cover and a cylinder hole processing technology, wherein the simulated cylinder cover is connected with a cylinder body through a third bolt, so that the axial force of the third bolt is ensured to be the same as that of a cylinder cover bolt during actual assembly, meanwhile, a water jacket heating device of the simulated cylinder cover can be inserted into an open water jacket of the cylinder body to heat the open water jacket and the cylinder hole, so that the cylinder hole of the cylinder body is pre-deformed by bolt pretightening force and heat during processing, the processed cylinder hole is not a perfect circle and has not very high cylindricity at normal temperature, and the roundness and the cylindricity of the cylinder hole are good during the working of an internal combustion engine, so that the tension of a piston ring of the internal combustion engine can be lower, the friction loss is finally reduced, the oil consumption is reduced, and the performance of the internal combustion engine is favorably.
Drawings
The invention is further described below with reference to the following figures and examples:
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a top view of the present invention.
Description of reference numerals: 1-first bolt, 2-cylinder cover upper plate, 21-equipment connecting hole, 22-upper side first connecting hole, 3-cylinder cover lower plate, 31-coil leading-out hole, 32-lower side first connecting hole, 4-process cylinder pad, 41-second connecting hole, 5-second bolt, 6-electromagnetic induction coil, 61-coil terminal and 7-positioning pin bolt.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1-2, the simulated cylinder head in this embodiment includes a cylinder head body, a process cylinder liner 4 and a water jacket heating device, which are sequentially connected from top to bottom, the cylinder head body is provided with N first connection holes for connecting with a cylinder block, the process cylinder liner 4 is provided with a second connection hole 41 at a position corresponding to the N first connection holes, the water jacket heating device can be inserted into an open water jacket of the cylinder block, and the water jacket heating device can heat the open water jacket and a cylinder hole. The open type water jacket is also called as an open type water jacket, is a space region between the cylinder hole and the cylinder hole outer wall, and is mainly used for cooling the cylinder wall and simultaneously responsible for the distribution of overall cooling water during the operation process of the internal combustion engine. The simulated cylinder cover provided by the invention is connected with the cylinder body through N third bolts, the size of N is the same as the number of the cylinder cover bolts for connecting the cylinder body and the cylinder cover during actual assembly, the axial force of the N third bolts is ensured to be the same as the axial force of the cylinder cover bolts during actual assembly, n =8 in the present embodiment, while the water jacket heating device simulating the cylinder head can be inserted into the open water jacket of the cylinder block, the open water jacket and the cylinder hole are heated, so that the cylinder hole of the cylinder block generates pre-deformation of 'bolt pretightening force + heat' during processing, the processed cylinder hole is not a perfect circle at normal temperature, but also the cylindricity is not very high, and the roundness and the cylindricity of the cylinder hole are better when the internal combustion engine works, therefore, the tension of the piston ring of the internal combustion engine can be lower, the friction loss is finally reduced, the oil consumption is reduced, and the performance of the internal combustion engine is favorably improved.
In this embodiment, the water jacket heating device is an electromagnetic induction coil 6, the left side and the right side of the top of the electromagnetic induction coil 6 are respectively provided with a coil terminal 61, and the shape of the electromagnetic induction coil 6 is matched with the shape of the open water jacket, so that all cylinder holes of the cylinder can be simultaneously heated.
In the present embodiment, the winding density of the electromagnetic induction coil 6 is reduced from top to bottom. When the internal combustion engine works, the temperature field of the cylinder hole is gradually reduced from top to bottom, and in order to be closer to the temperature field during heating, the winding density of the electromagnetic induction coil 6 is also gradually reduced from top to bottom, so that the electromagnetic induction density of the upper part of the cylinder hole is higher, the heat is larger, the temperature is higher, the electromagnetic induction density of the lower part of the cylinder hole is lower, the heat is smaller, and the temperature is lower.
In this embodiment, the cylinder head body includes a cylinder head upper plate 2 and a cylinder head lower plate 3 disposed on a lower side of the cylinder head upper plate 2, N upper first connection holes 22 are disposed on the cylinder head upper plate 2, N lower first connection holes 32 are disposed on the cylinder head lower plate 3, the N upper first connection holes 22 and the N lower first connection holes 32 are in one-to-one correspondence in position, and the N first connection holes are respectively composed of one upper first connection hole 22 and one lower first connection hole 32; the cylinder cover upper plate 2 and the cylinder cover lower plate 3 are positioned through M positioning pin bolts 7, and the cylinder cover upper plate 2 and the cylinder cover lower plate 3 are connected through P first bolts 1; the process cylinder gasket 4 is connected with the cylinder head lower plate 3 through T second bolts 5. In this embodiment, N =8, M =2, P =8, T =6, 8 upper side first connection holes 22 are respectively symmetrically disposed on the front and rear sides of the cylinder head upper plate 2, 8 lower side first connection holes 32 are respectively symmetrically disposed on the front and rear sides of the cylinder head lower plate 3, the front and rear sides of the cylinder head upper plate 2 and the cylinder head lower plate 3 are respectively provided with a positioning hole, 2 positioning pin bolts 7 are respectively inserted into the 2 positioning holes to ensure the relative positions of the cylinder head upper plate 2 and the cylinder head lower plate 3, 8 first bolts 1 are respectively symmetrically disposed on the front and rear sides of the simulation cylinder head, 6 second bolts 5 are respectively symmetrically disposed, and all pass through the process cylinder gasket 4 from bottom to top and are connected with the cylinder head lower plate 3.
In this embodiment, the front side wall, the rear side wall, the left side wall and the right side wall of the cylinder cover upper plate 2 are all provided with equipment connecting holes 21 for connecting with processing equipment; the left side wall and the right side wall of the cylinder cover lower plate 3 are both provided with coil leading-out holes 31 for accommodating the coil wiring terminals 61; the positions of the cylinder cover upper plate 2, the cylinder cover lower plate 3 and the process cylinder cushion 4 corresponding to the cylinder holes are all provided with processing through holes for a cutter of processing equipment to pass through.
The invention also provides a cylinder hole processing technology, which comprises the following steps:
s1, connecting the simulation cylinder cover with a machining device; the simulation cylinder cover needs to be assembled firstly before being connected with machining equipment, the assembling process is that firstly, a process cylinder cushion 4 and a cylinder cover lower plate 3 are connected through 6 second bolts 5, then two coil wiring ends 61 are respectively connected with coil leading-out holes 31, then 2 positioning pin bolts 7 are respectively inserted into 2 positioning holes to ensure the relative positions of a cylinder cover upper plate 2 and the cylinder cover lower plate 3, and finally, the cylinder cover upper plate 2 and the cylinder cover lower plate 3 are connected through 8 first bolts 1, so that the assembly of the simulation cylinder cover is completed. After the assembly of the simulation cylinder cover is completed, the simulation cylinder cover is connected with the processing equipment through the equipment connecting hole 21 on the upper plate 2 of the cylinder cover.
S2, inserting the electromagnetic induction coil 6 into the open type water jacket, and connecting the simulation cylinder head with the cylinder block through 8 third bolts sequentially passing through 8 first connecting holes and 8 second connecting holes 41 respectively; the electromagnetic induction coil 6 is matched with the shape of the open water jacket.
S3, connecting the two coil terminals 61 with the positive and negative poles of a power supply respectively, heating the open water jacket and the cylinder hole by supplying power to the electromagnetic induction coil 6, and stopping supplying power to the electromagnetic induction coil 6 when the temperature field of the cylinder hole reaches a preset temperature field; the temperature of the internal combustion engine is slightly different under different working condition loads, and the temperature field under the common working condition of the vehicle type is preferably selected as the preset temperature field, so that the roundness and cylindricity of the cylinder hole of the internal combustion engine are best when the internal combustion engine works.
And S4, starting the processing equipment to process the cylinder hole of the cylinder block, and obtaining a finished cylinder block product after finishing processing.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (9)
1. A simulation cylinder cap which characterized in that: include from last cylinder cap body, technology cylinder pad (4) and the water jacket heating device that connects gradually extremely down, be provided with the N first connecting hole that is used for being connected with the cylinder block on the cylinder cap body, it is N to correspond on technology cylinder pad (4) the position of first connecting hole is provided with one second connecting hole (41) respectively, water jacket heating device can insert in the open water jacket of cylinder block, and water jacket heating device can heat open water jacket and cylinder hole.
2. The simulated cylinder head of claim 1, wherein: the water jacket heating device is an electromagnetic induction coil (6), the left side and the right side of the top of the electromagnetic induction coil (6) are respectively provided with a coil wiring terminal (61), and the shape of the electromagnetic induction coil (6) is matched with the shape of the open water jacket.
3. The simulated cylinder head of claim 2, wherein: the winding density of the electromagnetic induction coil (6) is reduced from top to bottom.
4. A simulated cylinder head as claimed in claim 3, wherein: the cylinder cap body includes cylinder cap upper plate (2) and sets up cylinder cap hypoplastron (3) of the downside of cylinder cap upper plate (2), be provided with the first connecting hole of a N upside (22) on cylinder cap upper plate (2), be provided with the first connecting hole of a N downside (32) on cylinder cap hypoplastron (3), N is the first connecting hole of upside (22) and N are individual the position one-to-one of the first connecting hole of downside (32), N is first connecting hole is equallyd divide and is do not by one the first connecting hole of upside (22) and one the first connecting hole of downside (32) are constituteed.
5. The simulated cylinder head of claim 4, wherein: the cylinder cover comprises a cylinder cover upper plate (2) and a cylinder cover lower plate (3), wherein the cylinder cover upper plate (2) and the cylinder cover lower plate (3) are positioned through M positioning pin bolts (7), and the cylinder cover upper plate (2) and the cylinder cover lower plate (3) are connected through P first bolts (1).
6. The simulated cylinder head of claim 5, wherein: the process cylinder gasket (4) is connected with the cylinder cover lower plate (3) through T second bolts (5).
7. The simulated cylinder head of claim 6, wherein: the front side wall, the rear side wall, the left side wall and the right side wall of the cylinder cover upper plate (2) are respectively provided with an equipment connecting hole (21) for connecting with processing equipment; and coil leading-out holes (31) used for accommodating the coil wiring terminals (61) are formed in the left side wall and the right side wall of the cylinder cover lower plate (3).
8. The simulated cylinder head of claim 7, wherein: the positions of the cylinder cover upper plate (2), the cylinder cover lower plate (3) and the process cylinder cushion (4) corresponding to the cylinder holes are provided with processing through holes for a cutter of processing equipment to pass through.
9. A cylinder bore machining process is characterized by comprising the following steps:
s1, connecting the simulation cylinder cover of claim 8 with a machining device;
s2, inserting the electromagnetic induction coil (6) into the open type water jacket, and sequentially passing N third bolts through N first connecting holes and N second connecting holes (41) to connect the simulation cylinder head with the cylinder block;
s3, connecting the two coil terminals (61) with the positive and negative electrodes of a power supply respectively, heating the open water jacket and the cylinder hole by supplying power to the electromagnetic induction coil (6), and stopping supplying power to the electromagnetic induction coil (6) when the temperature field of the cylinder hole reaches a preset temperature field;
and S4, starting the processing equipment to process the cylinder hole of the cylinder block, and obtaining a finished cylinder block product after finishing processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110180712.6A CN112983670A (en) | 2021-02-08 | 2021-02-08 | Simulation cylinder cover and cylinder hole machining process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110180712.6A CN112983670A (en) | 2021-02-08 | 2021-02-08 | Simulation cylinder cover and cylinder hole machining process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112983670A true CN112983670A (en) | 2021-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110180712.6A Pending CN112983670A (en) | 2021-02-08 | 2021-02-08 | Simulation cylinder cover and cylinder hole machining process |
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| CN (1) | CN112983670A (en) |
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| CN108757204A (en) * | 2018-06-04 | 2018-11-06 | 广西玉柴机器股份有限公司 | Simulate cylinder head |
| US20180320562A1 (en) * | 2015-11-09 | 2018-11-08 | Isuzu Motors Limited | Cylinder head structure for internal combustion engine and internal combustion engine |
| JP2019178987A (en) * | 2018-03-30 | 2019-10-17 | 国立研究開発法人 海上・港湾・航空技術研究所 | Thermal loss evaluation device and thermal loss evaluation method, and material evaluation method |
-
2021
- 2021-02-08 CN CN202110180712.6A patent/CN112983670A/en active Pending
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|---|---|---|---|---|
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| JPS5744724A (en) * | 1980-09-01 | 1982-03-13 | Hitachi Ltd | Engine block heater |
| JPS62287965A (en) * | 1986-06-02 | 1987-12-14 | Mazda Motor Corp | Machining method for engine cylinder |
| JPH05109471A (en) * | 1991-10-11 | 1993-04-30 | Isuzu Seisakusho:Kk | Cylinder liner heating device |
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Application publication date: 20210618 |