CN108825393B - Cylinder assembly of horizontally opposed engine - Google Patents
Cylinder assembly of horizontally opposed engine Download PDFInfo
- Publication number
- CN108825393B CN108825393B CN201810932330.2A CN201810932330A CN108825393B CN 108825393 B CN108825393 B CN 108825393B CN 201810932330 A CN201810932330 A CN 201810932330A CN 108825393 B CN108825393 B CN 108825393B
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- China
- Prior art keywords
- hole
- cylinder
- bearing seat
- crankshaft
- cylinder body
- 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.)
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Links
- 239000003921 oil Substances 0.000 claims description 16
- 239000010687 lubricating oil Substances 0.000 claims description 13
- 238000005461 lubrication Methods 0.000 claims description 11
- 230000001050 lubricating effect Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 10
- 238000003754 machining Methods 0.000 description 7
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000010734 process oil Substances 0.000 description 1
- 230000008093 supporting effect Effects 0.000 description 1
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
- F02F1/18—Other cylinders
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
- F02B75/18—Multi-cylinder engines
- F02B75/24—Multi-cylinder engines with cylinders arranged oppositely relative to main shaft and of "flat" type
-
- 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
- F02F7/00—Casings, e.g. crankcases or frames
- F02F7/0002—Cylinder arrangements
- F02F7/0007—Crankcases of engines with cylinders in line
Landscapes
- 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 cylinder assembly of a horizontally opposed engine, which comprises a cylinder body, and a crankshaft bearing seat and a camshaft bearing seat which are integrally formed with the cylinder body. The cylinder body assembly of the horizontally opposed engine is easy to process, simple in processing process, high in processing efficiency and low in cost.
Description
Technical Field
The invention belongs to the technical field of engines, and particularly relates to a cylinder assembly of a horizontally opposed engine.
Background
The existing horizontally opposed engine cylinder body is divided into a left cylinder body and a right cylinder body, the left cylinder body and the right cylinder body are mutually frames, and are sealed by a circle of bolts on the joint surfaces of the left cylinder body and the right cylinder body, and the engine cylinder body has the following defects:
1. the processing difficulty is high: before the traditional cylinder body is used for processing a crankshaft bearing hole and a cam bearing hole, a crankshaft bearing seat stud and a corresponding nut are needed to be used for screwing the left cylinder body and the right cylinder body according to the pretightening force of the design state, which is the so-called cylinder body box assembling processing. The right cylinder body mounting surface A and the left cylinder body mounting surface C must be machined in place before the box assembling process, and because studs and corresponding nuts exist on the surface A and the surface C after the box assembling, the fastener blocks the cutter and the surface A and the surface C cannot be machined after the box assembling. At the moment, the crankshaft bearing hole and the cam bearing hole are deformed due to the fact that the surface A and the surface C bear the pretightening force of the bolts, the flatness of the surface A and the flatness of the surface C are guaranteed, the distance from the surface B to the surface A and the distance from the surface B to the surface C are guaranteed to be the same, machining difficulty is high, and machining efficiency is low;
2. the piston is eccentric, and the gas leakage amount is large: because the surface A and the surface C are processed by the respective fine references of the left cylinder body and the right cylinder body in the processing process, simultaneously, the parallelism of the surface A and the surface C cannot be guaranteed through secondary processing after the surface A and the surface C are combined, so that cylinder holes of the left cylinder body and the right cylinder body are not distributed at 180 degrees, the piston can be eccentric-worn in the moving process, the gas leakage amount is large, and the engine can be pulled to a serious extent;
3. unstable engine performance, large vibration and short service life: the distance from the surface B to the surface A and the distance from the surface B to the surface C are difficult to ensure in the cylinder body processing process, and the two distances can influence the compression clearance of the engine so as to influence the compression ratio of the engine, so that the explosion pressures of two opposite cylinders of the engine are inconsistent in the running process, the engine performance is unstable, the vibration noise is large, and the service life is short;
4. the cylinder body has large mass: the left and right of the cylinder body are mutually frames, the structure is thick, and if the cylinder body is used as aviation power equipment, the market competitiveness is reduced due to the large weight;
5. the manufacturing finished product is high: in the manufacturing process of the engine cylinder body, two sets of dies are required to be opened for the left cylinder body and the right cylinder body respectively, and the manufacturing cost is high.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a cylinder block assembly for a horizontally opposed engine with the objective of improving machining efficiency.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: the cylinder assembly of the horizontally opposed engine comprises a cylinder body, and a crankshaft bearing seat and a camshaft bearing seat which are integrally formed with the cylinder body.
The cylinder body has the left cylinder hole that holds left piston and holds right cylinder hole of right piston, and left cylinder hole and right cylinder hole are coaxial setting, crankshaft bearing seat is located between left cylinder hole and the right cylinder hole.
The left cylinder hole and the right cylinder hole are respectively provided with two.
The hydraulic tappet mounting hole for mounting the hydraulic tappet is formed in the cylinder body.
The cylinder body assembly of the horizontally opposed engine is easy to process, simple in processing process, high in processing efficiency and low in cost.
Drawings
The present specification includes the following drawings, the contents of which are respectively:
FIG. 1 is a schematic illustration of the cylinder assembly of the horizontally opposed engine of the present invention;
FIG. 2 is a front view of a cylinder block assembly of the horizontally opposed engine of the present invention;
marked in the figure as: 1. a crankshaft bearing seat; 2. a left cylinder hole; 3. a main oil duct; 4. a hydraulic tappet mounting hole; 5. a camshaft bearing seat; 6. a first hollow locating pin; 7. a first bolt hole; 8. a second hollow locating pin; 9. a second bolt hole; 10. a process oil hole; 11. cam lubrication oil holes; 12. a crankshaft lubrication oil hole; 13. right cylinder hole.
Detailed Description
The following detailed description of the embodiments of the invention, given by way of example only, is presented in the accompanying drawings to aid in a more complete, accurate and thorough understanding of the concepts and aspects of the invention, and to aid in its practice, by those skilled in the art.
It should be noted that, in the following embodiments, the "first" and "second" do not represent an absolute distinction between structures and/or functions, and do not represent a sequential order of execution, but are merely for convenience of description.
As shown in fig. 1 and 2, the invention provides a cylinder assembly of a horizontally opposed engine, which comprises a cylinder body, and a crankshaft bearing seat 1 and a camshaft bearing seat 5 which are integrally formed with the cylinder body.
Specifically, as shown in fig. 1 and 2, the cylinder body is an integral cylinder body, the crankshaft bearing seat 1 and the camshaft bearing seat 5 are integrally formed, the cylinder body integrates a left cylinder body and a right cylinder body of the existing engine, so that a set of precise reference can be shared in the machining process, box assembling machining does not exist, the distances between the left cylinder cover mounting surface and the main bearing holes can be guaranteed to be the same, meanwhile, the flatness of the left cylinder cover mounting surface and the right cylinder cover mounting surface can be easily guaranteed, the machining process is simplified, and the machining efficiency is improved.
As shown in fig. 1 and 2, the support of the crankshaft is realized by a crankshaft bearing block 1 and an additional main bearing cap, the main bearing cap is mounted on the crankshaft bearing block 1 by a second bolt, the crankshaft bearing block 1 has a second bolt hole 9 for inserting the second bolt, and the second bolt hole 9 is a threaded hole. The support of the camshaft is realized by a camshaft bearing pedestal 5 and an externally added camshaft bearing cover, wherein the camshaft bearing pedestal 5 is positioned above the crankshaft bearing pedestal 1, the camshaft bearing cover is arranged on the camshaft bearing pedestal 5 through a first bolt, the camshaft bearing pedestal 5 is provided with a first bolt hole 7 for the first bolt to be inserted, and the first bolt hole 7 is a threaded hole. The cylinder body is an integral cylinder body, the integral cylinder body is externally provided with the crankshaft bearing cover and the camshaft bearing cover, so that the supporting effect of the cylinder body on the crankshaft and the camshaft can be realized, and compared with the integral cylinder body, the integral cylinder body has smaller integral mass and accords with the light-weight design concept.
As shown in fig. 1 and 2, the cylinder body has a left cylinder hole 2 accommodating a left piston and a right cylinder hole 13 accommodating a right piston, the left cylinder hole 2 providing a moving track for the left piston, the right cylinder hole 13 providing a moving track for the right piston, the left cylinder hole 2 and the right cylinder hole 13 being circular holes and the left cylinder hole 2 and the right cylinder hole 13 being coaxially arranged, the crank bearing housing 1 being located between the left cylinder hole 2 and the right cylinder hole 13, the axes of the cylinder hole and the right cylinder hole 13 being perpendicular to the axis of the camshaft. The left cylinder hole 2 and the right cylinder hole 13 are respectively provided in two, the two left cylinder holes 2 are on the same straight line parallel to the axis of the camshaft, and the two right cylinder holes 13 are also on the same straight line parallel to the axis of the camshaft.
As shown in fig. 1 and 2, a hydraulic tappet mounting hole 4 for mounting a hydraulic tappet is provided inside the cylinder body, and the hydraulic tappet mounting hole 4 is located above the right cylinder hole 13. The inside of the cylinder body is also provided with a main oil duct 3, a cam lubricating oil hole 11 and a crankshaft lubricating oil hole 12, and the cam lubricating oil hole 11 and the crankshaft lubricating oil hole 12 are communicated with the main oil duct 3. The cam lubrication hole 11 is for guiding the lubrication oil from the oil passage 3 to the camshaft for lubricating the camshaft, and the cam lubrication hole 11 forms an opening for letting out the lubrication oil on the inner circular surface of the camshaft bearing housing 5. The crankshaft lubrication hole 12 is for guiding the lubrication oil from the oil passage 3 to the crankshaft for lubricating the crankshaft, and the crankshaft lubrication hole 12 forms an opening for the outflow of the lubrication oil on the inner circumferential surface of the crankshaft bearing housing 1.
The invention is described above by way of example with reference to the accompanying drawings. It will be clear that the invention is not limited to the embodiments described above. As long as various insubstantial improvements are made using the method concepts and technical solutions of the present invention; or the invention is not improved, and the conception and the technical scheme are directly applied to other occasions and are all within the protection scope of the invention.
Claims (4)
1. The cylinder block assembly of the horizontal opposed engine, its characterized in that: the device comprises a cylinder body, and a crankshaft bearing seat and a camshaft bearing seat which are integrally formed with the cylinder body;
the cylinder body is an integral cylinder body, and the cylinder body, the crankshaft bearing seat and the camshaft bearing seat are integrally formed;
the crankshaft is supported by a crankshaft bearing seat and an externally added main bearing cover, the main bearing cover is arranged on the crankshaft bearing seat through a second bolt, the crankshaft bearing seat is provided with a second bolt hole for inserting the second bolt, and the second bolt hole is a threaded hole;
the support of the camshaft is realized by a camshaft bearing seat and an additional camshaft bearing cover, the camshaft bearing seat is positioned above the crankshaft bearing seat, the camshaft bearing cover is arranged on the camshaft bearing seat through a first bolt, the camshaft bearing seat is provided with a first bolt hole for inserting the first bolt, and the first bolt hole is a threaded hole;
the cylinder body is provided with a left cylinder hole for accommodating the left piston and a right cylinder hole for accommodating the right piston, the left cylinder hole provides a movement track for the left piston, the right cylinder hole provides a movement track for the right piston, the left cylinder hole and the right cylinder hole are round holes, the left cylinder hole and the right cylinder hole are coaxially arranged, the crankshaft bearing seat is positioned between the left cylinder hole and the right cylinder hole, and the axes of the cylinder hole and the right cylinder hole are perpendicular to the axis of the camshaft; the left cylinder hole and the right cylinder hole are respectively arranged in two, the two left cylinder holes are positioned on the same straight line parallel to the axis of the camshaft, and the two right cylinder holes are also positioned on the same straight line parallel to the axis of the camshaft;
the hydraulic tappet mounting hole for mounting the hydraulic tappet is formed in the cylinder body, and the hydraulic tappet mounting hole is positioned above the right cylinder hole;
the inside of the cylinder body is also provided with a main oil duct, a cam lubricating oil hole and a crankshaft lubricating oil hole, and the cam lubricating oil hole and the crankshaft lubricating oil hole are communicated with the main oil duct; the cam lubricating oil hole is used for guiding lubricating oil from the main oil passage to the cam shaft and used for lubricating the cam shaft, and an opening for the lubricating oil to flow out is formed on the inner circular surface of the cam shaft bearing seat; the crankshaft lubrication oil hole is used for guiding lubricating oil from the main oil passage to the crankshaft and used for lubricating the crankshaft, and an opening for the lubricating oil to flow out is formed on the inner circular surface of the crankshaft bearing seat.
2. The cylinder block assembly of a horizontally opposed engine of claim 1, wherein: the cylinder body has the left cylinder hole that holds left piston and holds right cylinder hole of right piston, and left cylinder hole and right cylinder hole are coaxial setting, crankshaft bearing seat is located between left cylinder hole and the right cylinder hole.
3. The cylinder block assembly of a horizontally opposed engine of claim 2, wherein: the left cylinder hole and the right cylinder hole are respectively provided with two.
4. A cylinder block assembly for a horizontally opposed engine according to any one of claims 1 to 3 wherein: the hydraulic tappet mounting hole for mounting the hydraulic tappet is formed in the cylinder body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810932330.2A CN108825393B (en) | 2018-08-16 | 2018-08-16 | Cylinder assembly of horizontally opposed engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810932330.2A CN108825393B (en) | 2018-08-16 | 2018-08-16 | Cylinder assembly of horizontally opposed engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108825393A CN108825393A (en) | 2018-11-16 |
| CN108825393B true CN108825393B (en) | 2024-03-01 |
Family
ID=64150129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810932330.2A Active CN108825393B (en) | 2018-08-16 | 2018-08-16 | Cylinder assembly of horizontally opposed engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108825393B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2319584Y (en) * | 1998-03-13 | 1999-05-19 | 赵金新 | Non-link, electromagnetic speed variating two-in-one cylinder oil electromachine |
| CN201258967Y (en) * | 2008-06-26 | 2009-06-17 | 上海汽车变速器有限公司 | Shifting device for opposition two stage cylinder |
| CN101598080A (en) * | 2009-07-16 | 2009-12-09 | 北京航空航天大学 | A kind of crankcase of motor |
| CN206655740U (en) * | 2017-04-14 | 2017-11-21 | 董振宝 | Flat twin engine gas distribution assembly, engine and vehicle |
| CN208669443U (en) * | 2018-08-16 | 2019-03-29 | 芜湖钻石航空发动机有限公司 | The cylinder assembly of pancake engine |
-
2018
- 2018-08-16 CN CN201810932330.2A patent/CN108825393B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2319584Y (en) * | 1998-03-13 | 1999-05-19 | 赵金新 | Non-link, electromagnetic speed variating two-in-one cylinder oil electromachine |
| CN201258967Y (en) * | 2008-06-26 | 2009-06-17 | 上海汽车变速器有限公司 | Shifting device for opposition two stage cylinder |
| CN101598080A (en) * | 2009-07-16 | 2009-12-09 | 北京航空航天大学 | A kind of crankcase of motor |
| CN206655740U (en) * | 2017-04-14 | 2017-11-21 | 董振宝 | Flat twin engine gas distribution assembly, engine and vehicle |
| CN208669443U (en) * | 2018-08-16 | 2019-03-29 | 芜湖钻石航空发动机有限公司 | The cylinder assembly of pancake engine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108825393A (en) | 2018-11-16 |
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