CN100470040C - Crankcase of opposed engine with double cylinders - Google Patents
Crankcase of opposed engine with double cylinders Download PDFInfo
- Publication number
- CN100470040C CN100470040C CNB2004101013166A CN200410101316A CN100470040C CN 100470040 C CN100470040 C CN 100470040C CN B2004101013166 A CNB2004101013166 A CN B2004101013166A CN 200410101316 A CN200410101316 A CN 200410101316A CN 100470040 C CN100470040 C CN 100470040C
- Authority
- CN
- China
- Prior art keywords
- crankcase
- casing
- cylinder engine
- twin cylinder
- crankshaft
- 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
A cross located double cylinder crankcase comprises a main case body and crankshaft pole. The main case body is divided into two parts vertical to the axle of the crank shaft: front part and back part. The front part is linked to the back part via dowel pins and bolts. Whereon the integrated crankshaft pole on the front part and back part of the crankcase inlayed metal liner to enhance the strength.
Description
Technical field
The present invention relates to a kind of crankcase device of motor, particularly a kind of crankcase that is used in the opposed twin cylinder engine of motorcycle.
Background technique
At present, domestic be used on the opposed twin-tub water cooled engine or the crankcase on the opposed twin cylinder engine casing all adopts integrated type (as the Changjiang river 750 motors), and adopt sand casting process.Unsplit crankcase is not only heavy, take material, tissue looseness, and oil duct is not only difficult with pipeline, and the reject rate height.And the opposed twin cylinder engine of external BMW adopts along the vertical split type crankcase of crankshaft center line direction, and the crankshaft support bearing hole is that two halves combine, thereby adopts die casting but cause engine crankcase intensity to reduce.
The defective of technique scheme is, adopts the opposed twin cylinder engine crankcase of these two kinds of structural types, and manufacturability of its casting, processing and assembling is all undesirable, and maintenance is also inconvenient, and cost of production is higher.This shows that above-mentioned existing opposed twin cylinder engine crankcase structure still has many defectives, and the assistant officer treats further to be improved.
Summary of the invention
The objective of the invention is to, defective at above-mentioned prior art, a kind of opposed twin cylinder engine crankcase of new structure is provided, to simplify crankcase structure, save material, to reduce production costs, gain in strength, improve the manufacturability of engine crankcase casting, processing, assembling, be convenient to maintenance.
Above-mentioned purpose of the present invention realizes by the following technical solutions.Opposed twin cylinder engine crankcase according to the present invention's proposition, it comprises casing and crankshaft bearing hole, wherein said casing is by being preceding casing and rear box two-part perpendicular to the horizontal subdivision of crankshaft center line direction, and preceding casing and rear box are connected to form a complete casing by locating stud and bolt combination.
The crankshaft bearing hole of casing and rear box is monolithic construction before described, and in order further to improve crankcase intensity, the crankshaft bearing hole is provided with the edge cover that adopts metallic material to make.
The present invention compared with prior art has tangible advantage and beneficial effect.By above technological scheme as can be known, opposed twin cylinder engine crankcase of the present invention, described casing is by being preceding casing and rear box perpendicular to the horizontal subdivision of crankshaft center line direction.Adopt the opposed twin cylinder engine crankcase of this structure not only to simplify crankcase structure, save material, reduce production costs, increase the intensity of opposed twin cylinder engine crankcase simultaneously, improved engine housing casting, processing, assembly process process, be convenient to maintenance.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of specification, below with preferred embodiment of the present invention and conjunction with figs. describe in detail as after.
Description of drawings
Figure 1 shows that an embodiment of the horizontal subdivision structure of opposed twin cylinder engine crankcase of the present invention;
Figure 2 shows that another embodiment of the horizontal subdivision structure of opposed twin cylinder engine crankcase of the present invention.
Among the figure:
1, preceding casing;
2, bolt;
3, edge cover;
4,7. crankshaft bearing hole;
5. locating stud;
6. rear box.
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment, structure, feature and the effect thereof of the opposed twin cylinder engine crankcase that foundation the present invention is proposed, illustrate as after.
Figure 1 shows that an embodiment of the horizontal subdivision structure of opposed twin cylinder engine crankcase of the present invention, wherein, the engine crankshaft box body is by being preceding casing 1 and rear box 6 perpendicular to the horizontal subdivision of crankshaft center line direction, and preceding casing 1 forms a complete casing with rear box 6 by adopting two locating studs 5 and several bolts 2 to be connected.The crankshaft bearing hole 7 of preceding casing 1 and the crankshaft bearing hole 4 of rear box 6 are monolithic construction, and in order further to improve the intensity of crankcase, increase to be provided with to inlay on the crankshaft bearing hole and overlap 3, and edge cover 3 adopts to be made as metallic material.
Figure 2 shows that another embodiment of the horizontal subdivision structure of opposed twin cylinder engine crankcase of the present invention, wherein, casing is by being preceding casing 1 and rear box 6 perpendicular to the horizontal subdivision of crankshaft center line direction.
Above-mentioned opposed twin cylinder engine crankcase is because by horizontal subdivision, and is higher than the intensity of the crankcase of vertical subdivision, can carry out the batch die-casting process, simplified the structure of crankcase simultaneously, not only saves material, reduce production costs, and more convenient maintenance.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified to the equivalent embodiment of equivalent variations, but every technical solution of the present invention content that do not break away from,, all still belong in the scope of technical solution of the present invention any simple modification, equivalent variations and modification that above embodiment did according to technical spirit of the present invention.
Claims (4)
1, a kind of opposed twin cylinder engine crankcase, comprise casing and crankshaft bearing hole, it is characterized in that: described casing is by perpendicular to the horizontal subdivision of crankshaft center line direction being preceding casing (1) and rear box (6) two-part, and preceding casing (1) and rear box (6) are connected by locating stud (5) and bolt (2) and form a complete casing; The crankshaft bearing hole (7) of casing (1) is a monolithic construction before described.
2, opposed twin cylinder engine crankcase according to claim 1 is characterized in that: the crankshaft bearing hole (4) of described rear box (6) is a monolithic construction.
3, opposed twin cylinder engine crankcase according to claim 1 and 2 is characterized in that: described crankshaft bearing hole is provided with edge cover (3).
4, opposed twin cylinder engine crankcase according to claim 3 is characterized in that: described edge cover (3) adopts metallic material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004101013166A CN100470040C (en) | 2004-12-17 | 2004-12-17 | Crankcase of opposed engine with double cylinders |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004101013166A CN100470040C (en) | 2004-12-17 | 2004-12-17 | Crankcase of opposed engine with double cylinders |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1644903A CN1644903A (en) | 2005-07-27 |
| CN100470040C true CN100470040C (en) | 2009-03-18 |
Family
ID=34869615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004101013166A Expired - Fee Related CN100470040C (en) | 2004-12-17 | 2004-12-17 | Crankcase of opposed engine with double cylinders |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100470040C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2893178B1 (en) * | 2013-01-31 | 2016-04-27 | BRP-Powertrain GmbH & Co. KG | Internal combustion engine having a split crankcase |
| FR3016396A1 (en) * | 2014-01-13 | 2015-07-17 | Rdmo | PUMP BODY INTEGRATED IN THE CASING OF A LIQUID COOLING ENGINE |
| CN103925099A (en) * | 2014-04-03 | 2014-07-16 | 中国北方发动机研究所(天津) | Engine body combined structure suitable for horizontally-opposed two-stroke engine |
-
2004
- 2004-12-17 CN CNB2004101013166A patent/CN100470040C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1644903A (en) | 2005-07-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090318 Termination date: 20111217 |