CN203430649U - Right crankcase of motorcycle engine - Google Patents
Right crankcase of motorcycle engine Download PDFInfo
- Publication number
- CN203430649U CN203430649U CN201320395204.0U CN201320395204U CN203430649U CN 203430649 U CN203430649 U CN 203430649U CN 201320395204 U CN201320395204 U CN 201320395204U CN 203430649 U CN203430649 U CN 203430649U
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- exhaust gas
- oil
- hole
- steam passage
- right crankcase
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Abstract
The utility model discloses a right crankcase of a motorcycle engine, wherein the right crankcase of the motorcycle engine is simple in working procedure and high in percent of pass of production. The right crankcase of the motorcycle engine comprises a right crankcase body, a crank hole, a cylinder hole and a main output shaft hole, wherein the crank hole, the cylinder hole and the main output shaft hole are formed in the right crankcase body. An exhaust gas inlet is formed in the right crankcase body, the exhaust gas inlet is communicated with an exhaust gas channel in the right crankcase body, the rear of the exhaust gas channel is provided with an isolation plate to be divided into two channels, one channel is communicated with an oil return cavity, and the other channel is communicated with an exhaust gas nozzle; an oil channel is communicated to the main output shaft hole, the exhaust gas channel in front of the isolation plate is provided with a guide plate, the guide plate makes the exhaust gas channel from the exhaust gas inlet to the exhaust gas nozzle communicated in a bent mode and makes the exhaust gas channel from the exhaust gas inlet to the oil return cavity communicated in a straight-through mode, a separation plate is further arranged on the oil return cavity, and the oil return cavity is separated by the separation plate to form a cavity communicated with an exhaust gas channel of a left crankcase body of the engine; the parallel distance between the oil channel and a threaded hole adjacent to the oil channel and used for installation of the joint surface is larger than or equal to 10mm.
Description
Technical field
The utility model belongs to the crankcase technical field of motor, is specifically related to a kind of right crankshaft box body of engine of motorcycle, more definite, is the right crankcase that is applied to the CG Engine Series of motorcycle.
Background technique
Existing market is used the most general CG Engine Series due to the increase of discharge capacity, and engine temperature also increases, and the viscosity of machine oil reduces, and its mobility improves, and vaporization phenomenon is more obvious.At motor, during in fast state, machine oil easily sprays from waste gas mouth with waste gas, causes crankcase inner engine oil extremely to consume.Once user supplements not in time, easily cause each parts of motor to occur unusual condition because machine oil lacks, even cause motor to work.
As everyone knows, the right crankcase of existing motorcycle is all by die cast.On existing right crankcase, as shown in Figure 2, inwall at casing is provided with oil duct 5, on being combined end face with the installation of left crankcase, right crankcase is distributed with as dry installation screw 14 simultaneously, sidewall when configuration between this installation screw 4 and oil duct 5 is because die casting there will be " thermal center circle " all the time, be in the sidewall between installation screw 14 and oil duct 5, to produce a large amount of " pore ", " shrinkage cavities ", oil in oil duct 5 can pass through these " pores ", " shrinkage cavity " infiltrates, and causes forming near the other installation screw 14 of oil duct 5 image of gas leakage screw.
Summary of the invention
The purpose of this utility model is to provide a kind of right crankshaft box of motorcycle engine, while making high engine speeds running, has effectively slowed down the pressure of lubricant oil, and then lubricant oil can not sprayed in waste gas mouth, has reduced oily loss; Meanwhile, improve the phenomenon of the other tapped hole gas leakage of oil duct, improved conforming product rate.
For achieving the above object, the utility model has adopted following technological scheme: a kind of right crankshaft box of motorcycle engine, comprise right crankcase body and on crankshaft hole, cylinder hole and main output shaft hole, on this right crankcase body, be provided with exhaust gas inlet, this exhaust gas inlet is connected with the exhaust steam passage on right crankcase body, at this exhaust steam passage rear portion, establish isolating plate and form two passages, one paths communicates with oil back chamber, and another paths communicates with waste gas mouth; On described main output shaft hole, be communicated with oil duct, on the exhaust steam passage in isolating plate the place ahead, be provided with and make the exhaust steam passage that is led to waste gas mouth by exhaust gas inlet be overbent type connection and make the exhaust steam passage that is led to oil back chamber by exhaust gas inlet be the guide plate that straight-through type is communicated with, on oil back chamber, be also provided with dividing plate, this dividing plate is separated out a chamber being connected with the exhaust steam passage of engine left crankcase body by oil back chamber; Parallel distance between tapped hole that described oil duct is adjacent and that install for junction plane is more than or equal to 10mm.
Further, on the tank wall between described cylinder hole and crankshaft hole, be provided with the first nozzle opening that points to piston.
Further, the exhaust gas inlet place of described right crankcase body is provided with the oil baffle that the machine oil splashing when stoping bent axle to rotate enters exhaust steam passage.
Further, described the first nozzle opening is one or more; Described the first nozzle opening diameter is 1～2mm.
The beneficial effects of the utility model: the distance that has extended exhaust steam passage, machine oil more easily liquefaction in exhaust steam passage makes to vaporize, and under the effect of guide plate, machine oil is easier to separated with waste gas ratio, the machine oil of overwhelming majority vaporization can be back to crankcase again, thereby reduced the abnormal consume of crankcase inner engine oil, and effectively slowed down the pressure of lubricant oil, and then lubricant oil can not sprayed in waste gas mouth; In addition, by having revised the parallel distance between oil duct and tapped hole, " pore " while having eliminated die casting between it, " shrinkage cavity " phenomenon, therefore, improved the phenomenon of the other tapped hole gas leakage of oil duct, improved conforming product rate.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the rear view of Fig. 1.
Embodiment
In order to make the purpose of this utility model, technological scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.
A right crankshaft box of motorcycle engine as shown in Figure 1-2, itself and the mould assembling of engine left crankcase body form whole engine crankcase, and on mould assembling face, establish sealing gasket and sealed.It comprises right crankcase body and on crankshaft hole 1, cylinder hole 2 and main output shaft hole 16, on this right crankcase body, be provided with exhaust gas inlet 4, this exhaust gas inlet 4 is connected with the exhaust steam passage 7 on right crankcase body, at these exhaust steam passage 7 rear portions, establish isolating plate 8 and form two passages, one paths communicates with oil back chamber 9, and another paths communicates with waste gas mouth 11; On described main output shaft hole 16, be communicated with oil duct 17, on the exhaust steam passage 7 in isolating plate 8 the place aheads, be provided with and make the exhaust steam passage that is led to waste gas mouth 11 by exhaust gas inlet 4 be overbent type connection and make the exhaust steam passage that is led to oil back chamber 9 by exhaust gas inlet 4 be the guide plate 6 that straight-through type is communicated with, on oil back chamber 9, be also provided with dividing plate 12, this dividing plate 12 is separated out a chamber 13 being connected with the exhaust steam passage of engine left crankcase body by oil back chamber 9; Parallel distance between described oil duct 17 tapped hole 10 that be adjacent and that install for junction plane is more than or equal to 10mm.
The utility model is under the effect of guide plate 6, the tunnel-shaped that enters waste gas mouth 11 via exhaust steam passage 7 by exhaust gas inlet 4 becomes overbent type to be communicated with, and enter to oil back chamber 9 for straight line is communicated with, make the easy straight line of machine oil enter oil back chamber and be difficult to enter the passage at waste gas mouth 11 places; Although pass to the passage of waste gas mouth 11, be overbent type connection, due to the dispersivity of gas, waste gas is arrived waste gas mouth 11 and is discharged by this bent passage at an easy rate; And oil duct 17 is that be adjacent and be set to be more than or equal to 10mm for the parallel distance between the tapped hole 10 of junction plane installation, preferably this parallel distance is 10mm～13mm, more definite, and this parallel distance is 11.47mm.Correction by this parallel distance arranges, and by long test production result, learns, " pore ", " shrinkage cavity " phenomenon between being somebody's turn to do while making die casting, also just improved the phenomenon that the other tapped hole of oil duct leaks gas, and improved conforming product rate.
Described the first nozzle opening 3 being opened on right crankcase body and between crankshaft hole 1 and cylinder hole 2, during engine running, in case under the effect of self pressure, machine oil can be from piston and the cylinder sleeve jet lubrication oil of trend cylinder hole 2 interior assemblings through this first nozzle opening 3, make cylinder sleeve and piston be lubricated and lower the temperature, the wearing and tearing between cylinder sleeve and piston have been reduced, reduced piston running resistance, improved the thermal stress state of piston, improved the reliability of pistons work, greatly improved its working life simultaneously.
Exhaust gas inlet 4 places of described right crankcase body are provided with the oil baffle 5 that the machine oil splashing when stoping bent axle to rotate enters exhaust steam passage 7, and this oil baffle 5 can stop bent axle to rotate the machine oil splashing to enter in exhaust steam passage 7 by exhaust gas inlet 4.
In addition, described waste gas mouth 11 protrudes from the internal box wall of described right crankcase body, for waste gas, in exhaust steam passage, enters this waste gas mouth 11 and discharges; Described the first nozzle opening 3 is one or more, and its quantity can require to make according to concrete technology, and these the first nozzle opening 3 diameters are 1～2mm, and preferably diameter is 1mm.
The technological scheme above the utility model embodiment being provided is described in detail, applied specific case herein the utility model embodiment's principle and mode of execution are set forth, above embodiment's explanation is only applicable to help to understand the utility model embodiment's principle; , for one of ordinary skill in the art, according to the utility model embodiment, in embodiment and application area, all will change, in sum, this description should not be construed as restriction of the present utility model meanwhile.
Claims (5)
1. a right crankshaft box of motorcycle engine, comprise right crankcase body and on crankshaft hole (1), cylinder hole (2) and main output shaft hole (16), on this right crankcase body, be provided with exhaust gas inlet (4), this exhaust gas inlet (4) is connected with the exhaust steam passage (7) on right crankcase body, at this exhaust steam passage (7) rear portion, establish isolating plate (8) and form two passages, one paths communicates with oil back chamber (9), and another paths communicates with waste gas mouth (11); On described main output shaft hole (16), be communicated with oil duct (17), it is characterized in that: on the exhaust steam passage (7) in isolating plate (8) the place ahead, be provided with and make the exhaust steam passage that is led to waste gas mouth (11) by exhaust gas inlet (4) be overbent type connection and make the exhaust steam passage that is led to oil back chamber (9) by exhaust gas inlet (4) be the guide plate (6) that straight-through type is communicated with, on oil back chamber (9), be also provided with dividing plate (12), this dividing plate (12) is separated out a chamber (13) being connected with the exhaust steam passage of engine left crankcase body by oil back chamber (9); Parallel distance between tapped hole (10) that described oil duct (17) is adjacent and that install for junction plane is more than or equal to 10mm.
2. right crankshaft box of motorcycle engine according to claim 1, is characterized in that: on the tank wall between described cylinder hole (2) and crankshaft hole (1), be provided with the first nozzle opening (3) that points to piston.
3. right crankshaft box of motorcycle engine according to claim 1, is characterized in that: the exhaust gas inlet of described right crankcase body (4) locates to be provided with the oil baffle (5) that the machine oil splashing when stoping bent axle to rotate enters exhaust steam passage (7).
4. right crankshaft box of motorcycle engine according to claim 2, is characterized in that: described the first nozzle opening (3) is for one or more.
5. according to the right crankshaft box of motorcycle engine described in claim 2 or 4, it is characterized in that: described the first nozzle opening (3) diameter is 1～2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320395204.0U CN203430649U (en) | 2013-07-03 | 2013-07-03 | Right crankcase of motorcycle engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320395204.0U CN203430649U (en) | 2013-07-03 | 2013-07-03 | Right crankcase of motorcycle engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203430649U true CN203430649U (en) | 2014-02-12 |
Family
ID=50059694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320395204.0U Expired - Fee Related CN203430649U (en) | 2013-07-03 | 2013-07-03 | Right crankcase of motorcycle engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203430649U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762033A (en) * | 2016-12-28 | 2017-05-31 | 重庆小康工业集团股份有限公司 | Engine oil gas separation structure |
-
2013
- 2013-07-03 CN CN201320395204.0U patent/CN203430649U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762033A (en) * | 2016-12-28 | 2017-05-31 | 重庆小康工业集团股份有限公司 | Engine oil gas separation structure |
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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: 20140212 Termination date: 20150703 |
|
| EXPY | Termination of patent right or utility model |