CN102979643A - Crankcase combination capable of lowering engine oil loss - Google Patents
Crankcase combination capable of lowering engine oil loss Download PDFInfo
- Publication number
- CN102979643A CN102979643A CN2012105218210A CN201210521821A CN102979643A CN 102979643 A CN102979643 A CN 102979643A CN 2012105218210 A CN2012105218210 A CN 2012105218210A CN 201210521821 A CN201210521821 A CN 201210521821A CN 102979643 A CN102979643 A CN 102979643A
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- crankcase
- oil
- exhaust gas
- right crankcase
- waste gas
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Abstract
The invention discloses a crankcase combination capable of lowering engine oil loss. A left crankcase and a right crankcase are both provided with waste gas inlets and waste gas channels; the rear section of the waste gas channel of the right crankcase waste channel is provided with an isolation plate to form two paths of channels; the waste gas channel of the right crankcase on the front section of the isolation plate is provided with an oil and gas separation guide plate; a channel entering a waste gas nozzle, which is formed by the isolation of the waste gas channel of the right crankcase and the isolation plate, forms bending-type communication; a baffle is arranged in an oil return cavity; another cavity is isolated out of the oil return cavity by the baffle; a gasket is provided with a second communication hole; and the other cavity isolated by the baffle is communicated with the waste gas channel of the left crankcase by the second communication hole. According to the crankcase combination disclosed by the invention, vaporized engine oil is easier to liquefy. Under the action of the oil and gas separation guide plate, the engine oil and the waste gas can be easily separated, and most parts of vaporized engine oil can flow back to the crankcase again so as to reduce abnormal loss of the engine oil in the crankcase, thereby being favorable for protecting the engine to enable the engine to normally work.
Description
Technical field
The present invention relates to the improvement of crankshaft box of motorcycle engine technology, specifically refer to a kind of crankshaft box of motorcycle engine combination that can reduce the machine oil loss.
Background technique
In crankshaft box of motorcycle engine, crankcase forms by left and right sides crankcase two-part mould assembling, is provided with sealing gasket at mould assembling face and is sealed.Except prevent left and right sides crankcase in conjunction with rear oil-proof, sealing gasket has moved towards guiding function to oil gas simultaneously, makes it to walk by the path of setting.
Existing market uses the most general CG Engine Series owing to the increase of discharge capacity, and engine temperature also increases, and the viscosity of machine oil reduces, its mobile raising, and vaporization phenomenon is more obvious.When motor was in fast state, machine oil sprayed from waste gas mouth with waste gas easily, caused the unusual loss of crankcase inner engine oil.Replenish in case the user is untimely, cause easily each parts of motor unusual condition to occur because machine oil lacks, even cause motor to work.By analysis, said engine oil sprays with crankcase structure relevant from waste gas mouth with waste gas.Existing right crankcase 1 structure is seen Fig. 1, and it is provided with a right crankcase exhaust gas import 11, and right crankcase exhaust gas import 11 communicates with waste gas mouth 15 by right crankcase exhaust gas passage 12.Left crankcase 2 structures are seen Fig. 2, the left crankcase exhaust steam passage 22 that it is provided with equally a left crankcase exhaust gas inlet 21 and communicates with it, 3(sees Fig. 3 at sealing gasket) be provided with the first intercommunicating pore 31 that communicates with left crankcase exhaust steam passage 22 ends, by this first intercommunicating pore 31 left crankcase exhaust steam passage 22 is communicated with right crankcase exhaust gas passage 12.
Machine oil is as follows with the process of waste gas ejection: during engine operation, bent axle rotates the machine oil that has splashed and enters exhaust steam passage 12 from right crankcase exhaust gas import 11 on the one hand with waste gas; Machine oil and the waste gas of vaporization also enter exhaust steam passage 22 from the exhaust gas inlet 21 of left crankcase (see figure 2) simultaneously, the first intercommunicating pore 31 that passes on the crankcase gasket (see figure 3) when left crankcase exhaust steam passage 22 end enters right crankcase exhaust gas passage 12, compile with the exhaust gases that enters into exhaust steam passage from right crankcase exhaust gas import 11, oil gas after compiling (be isolating plate the exhaust steam passage of second half section is separated into two paths) under the buffer action of isolating plate 13, a part enters oil back chamber 14 in the right crankcase by a-road-through road wherein, and be back in the crankcase by oil back chamber 14, another part is by the ejection in the waste gas mouth 15 from right crankcase of another paths, and this part namely causes the unusual loss of machine oil.Because the pressure at waste gas mouth place is smaller, thus most oil gas walk toward the waste gas mouth direction, therefore under the present structure, in case after oil gas enters the right crankcase exhaust gas passage, by oil back chamber 14 be back in the crankcase oil gas just seldom.
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Summary of the invention
For the deficiency that machine oil in the existing crankcase composite structure sprays from waste gas mouth with waste gas easily, the object of the present invention is to provide a kind of machine oil to be not easy the crankcase combination that from waste gas mouth, sprays with waste gas.
To achieve these goals, the technical solution used in the present invention is such:
A kind of crankcase combination that reduces the machine oil loss comprises the left crankcase and the right crankcase that snap together, and the mould assembling face of left crankcase and right crankcase is provided with sealing gasket; Right crankcase is provided with the right crankcase exhaust gas import, the right crankcase exhaust gas import communicates with the right crankcase exhaust gas passage, be provided with isolating plate at right crankcase exhaust gas passage back segment and form two paths, the a-road-through road communicates with oil back chamber, and another paths communicates with waste gas mouth; Left crankcase is provided with left crankcase exhaust gas inlet and left crankcase exhaust steam passage; Be provided with the first intercommunicating pore at sealing gasket, the first intercommunicating pore is with left crankcase exhaust steam passage (end) and right crankcase exhaust gas channel connection; It is characterized in that: be provided with the Oil-gas Separation guide plate at the right crankcase exhaust gas passage that is positioned at the isolating plate leading portion, under the effect of Oil-gas Separation guide plate, the right crankcase exhaust gas passage becomes overbent type to be communicated with the tunnel-shaped that enters waste gas mouth that the isolating plate isolation forms; Be provided with baffle plate in oil back chamber, baffle plate isolates the another one chamber outside oil back chamber, is provided with the second intercommunicating pore at sealing gasket, and the second intercommunicating pore is communicated with the another one chamber that baffle plate isolates with the left crankcase exhaust steam passage.
Further, inlet is provided with oil baffle at right crankcase exhaust gas, enters the right crankcase exhaust gas passage to stop bent axle to rotate the machine oil that splashes by the right crankcase exhaust gas import.
During engine operation, bent axle rotates the machine oil one tunnel that has splashed and enters exhaust steam passage with waste gas from the left crankcase exhaust gas inlet, flow through behind the left crankcase exhaust steam passage end, enter the right crankcase exhaust gas passage by the first intercommunicating pore on the sealing gasket again, this part machine oil is the same with prior art through the path with waste gas institute.Other one road machine oil enters the another one chamber that the baffle plate on the right crankcase isolates with waste gas, then enter the left crankcase exhaust steam passage by the second intercommunicating pore on the sealing gasket and compile with that road before endways, enter the right crankcase exhaust gas passage by the first intercommunicating pore on the sealing gasket equally again.After the circulation of above-mentioned path, even the machine oil vaporization also can be cooled to liquid again.Because the Oil-gas Separation guide plate makes the right crankcase exhaust gas passage become overbent type to be communicated with the tunnel-shaped that enters waste gas mouth, and be communicated with the oil back chamber straight line, under the effect of Oil-gas Separation guide plate, the machine oil craspedodrome (craspedodrome is more conducive to its backflow) of cooling is back to crankcase to oil back chamber and from oil back chamber, waste gas since for gas not the recipient can by above-mentioned overbent type communicating passage, can from waste gas mouth, flow out to restriction.
The present invention is by establishing oil baffle with blocking-up oil gas path wherein in right crankcase exhaust gas inlet, and opens up the another one oil gas path that the intercommunicating pore newly established on the another one chamber that isolated by the baffle plate on the right crankcase and the sealing gasket consists of.Through behind the above-mentioned newly-designed path; the easier liquefaction of vaporization machine oil; under the effect of Oil-gas Separation guide plate; machine oil just separates than being easier to waste gas; the machine oil of overwhelming majority vaporization can be back to crankcase again; thereby reduced the unusual loss of crankcase inner engine oil, be conducive to protect motor to make its normal operation.
Description of drawings
Fig. 1-prior art right crankcase structural drawing.
Fig. 2-prior art left crankcase structural drawing.
Fig. 3-prior art crankcase gasket structural drawing.
Fig. 4-right crankcase structural drawing of the present invention.
Fig. 5-left crankcase structural drawing of the present invention.
Fig. 6-crankcase gasket structural drawing of the present invention.
Embodiment
The invention will be further described below in conjunction with accompanying drawing.
Crankcase combination of the present invention is the same with prior art, comprise right crankcase 1 and left crankcase 2, be provided with fastening screw at left crankcase and right crankcase periphery, clamping bolt passes fastening screw left crankcase is fixedly connected with right crankcase, is provided with sealing gasket 3 at mould assembling face and is sealed.Sealing gasket except prevent left and right sides crankcase in conjunction with rear oil-proof, also oil gas has been moved towards guiding function simultaneously, make it to walk by the path of setting.
One, is provided with oil baffle 16 in former right crankcase exhaust gas inlet, enters right crankcase exhaust gas passage 22 to stop bent axle to rotate the machine oil that splashes by the right crankcase exhaust gas import, referring to Fig. 4, be about to the a-road-through road cancellation that original oil gas enters.
Two, be provided with Oil-gas Separation guide plate 17 at the right crankcase exhaust gas passage 12 that is positioned at the isolating plate leading portion, under 17 effects of Oil-gas Separation guide plate, right crankcase exhaust gas passage 12 becomes overbent type to be communicated with the tunnel-shaped that enters waste gas mouth 15 that the isolating plate isolation forms, and be communicated with oil back chamber 14 straight lines, referring to Fig. 4.The purpose of Oil-gas Separation guide plate 17 is to make the machine oil straight line enter oil back chamber and be difficult to enter waste gas mouth place passage, although and the passage that arrives waste gas mouth bend because the dispersivity of gas, can be easily by this bent passage arrival waste gas mouth.
Three, be provided with baffle plate 18 in oil back chamber 14, baffle plate 18 isolates another one chamber 19 when reducing the oil back chamber size, referring to Fig. 4.Simultaneously be provided with the second intercommunicating pore 32, the second intercommunicating pores 32 at sealing gasket 3 the another one chamber 19 that baffle plate isolates is communicated with left crankcase exhaust steam passage 22, see Fig. 6, namely form another one oil gas inlet passage by this chamber and the second intercommunicating pore.The effect of baffle plate 18 both can keep off back the machine oil of coming in the right crankcase exhaust gas passage 12 and separate through Oil-gas Separation guide plate 17 in the crankcase, also the oil gas that produces is played guiding function simultaneously, oil gas can be entered from the another one chamber 19 that isolates and the second intercommunicating pore 32 on sealing gasket enters left crankcase exhaust steam passage 22, be pooled to right crankcase exhaust gas passage 12 from left crankcase exhaust steam passage 22 ends by the first intercommunicating pore 31 on the sealing gasket again.
Although four, originally also be provided with a block in left crankcase exhaust steam passage 22 tail ends, this block is lower than left crankcase end face (mould assembling face) is installed, so oil gas is not had barrier effect, sees Fig. 2.It is concordant that the present invention makes this block and left crankcase that end face is installed, and forms gear oil clot 23, sees Fig. 5.
During engine operation, bent axle rotates the machine oil one tunnel that has splashed and enters left crankcase exhaust steam passage 22 with waste gas from left crankcase exhaust gas inlet 21, flow through behind the left crankcase exhaust steam passage end, enter right crankcase exhaust gas passage 12 by the first intercommunicating pore 31 on the sealing gasket again, this part machine oil is the same with prior art through the path with waste gas institute.Other one road machine oil enters the another one chamber 19 that the baffle plate 18 on the right crankcase isolates with waste gas, then enter left crankcase exhaust steam passage 22 by the second intercommunicating pore 32 on the sealing gasket and compile with that road before endways, enter right crankcase exhaust gas passage 12 by the first intercommunicating pore 31 on the sealing gasket equally again.After the circulation of above-mentioned path, even the machine oil vaporization also can be cooled to liquid again.Because Oil-gas Separation guide plate 17 makes the right crankcase exhaust gas passage become overbent type to be communicated with the tunnel-shaped that enters waste gas mouth, and be communicated with oil back chamber 14 straight lines, under the effect of Oil-gas Separation guide plate 17, the machine oil craspedodrome (craspedodrome is more conducive to its backflow) of cooling is back to crankcase to oil back chamber 14 and from oil back chamber, waste gas since for gas not the recipient can by above-mentioned overbent type communicating passage, can from waste gas mouth 15, flow out to restriction.
Wherein (originally this oil gas path is closer from exhaust steam passage in an oil gas path with blocking-up by establish oil baffle in right crankcase exhaust gas inlet in the present invention, oil gas is easier to be entered, oil content is more simultaneously, cause easily the loss of machine oil), and open up the another one oil gas path that the intercommunicating pore newly established on the another one chamber that isolated by the baffle plate on the right crankcase and the sealing gasket consists of.This is newly established the feasible part in path and is, after the baffle plate buffer action, the machine oil of backflow comprise waste gas not to the oil gas that enters in the other direction with resistance.The path of newly opening mainly contains two effects: passage of waste gas design of 1, giving the clutch running generation of right crankcase below; 2, add a baffle plate in the path of newly opening, so that the oil gas of former passage is under the baffle plate buffer action, Oil-gas Separation, oil refluxes.Through behind the above-mentioned newly-designed path; the easier liquefaction of vaporization machine oil; under the effect of Oil-gas Separation guide plate; machine oil just separates than being easier to waste gas; the machine oil of overwhelming majority vaporization can be back to crankcase again; thereby reduced the unusual loss of crankcase inner engine oil, be conducive to protect motor to make its normal operation.
Explanation is at last, above embodiment is only unrestricted in order to technological scheme of the present invention to be described, although with reference to preferred embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technological scheme of the present invention, and not breaking away from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (3)
1. a crankcase combination that reduces the machine oil loss comprises the right crankcase (1) and the left crankcase (2) that snap together, and the mould assembling face of left crankcase (2) and right crankcase (1) is provided with sealing gasket (3); Right crankcase (1) is provided with right crankcase exhaust gas import (11), right crankcase exhaust gas import (11) communicates with right crankcase exhaust gas passage (12), be provided with isolating plate (13) at right crankcase exhaust gas passage back segment and form two paths, the a-road-through road communicates with oil back chamber (14), and another paths communicates with waste gas mouth (15); Left crankcase (2) is provided with left crankcase exhaust gas inlet (21) and left crankcase exhaust steam passage (22); Be provided with the first intercommunicating pore (31) at sealing gasket (3), the first intercommunicating pore (31) is communicated with left crankcase exhaust steam passage (21) with right crankcase exhaust gas passage (11); It is characterized in that: be provided with Oil-gas Separation guide plate (17) at the right crankcase exhaust gas passage that is positioned at the isolating plate leading portion, under the effect of Oil-gas Separation guide plate, right crankcase exhaust gas passage (12) becomes overbent type to be communicated with the tunnel-shaped that enters waste gas mouth that the isolating plate isolation forms; In oil back chamber (14), be provided with baffle plate (18), baffle plate (18) isolates another one chamber (19) outside oil back chamber, be provided with the second intercommunicating pore (32) at sealing gasket (3), the second intercommunicating pore (32) is communicated with the another one chamber (19) that baffle plate isolates with left crankcase exhaust steam passage (22).
2. the crankcase of reduction machine oil according to claim 1 loss combination, it is characterized in that: locate to be provided with oil baffle (16) in right crankcase exhaust gas import (11), enter the right crankcase exhaust gas passage to stop bent axle to rotate the machine oil that splashes by the right crankcase exhaust gas import.
3. the crankcase of reduction machine oil according to claim 1 loss combination is characterized in that: be provided with a block in left crankcase exhaust steam passage (22) tail end, this block is installed the concordant formation gear of end face oil clot (23) with left crankcase.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210521821.0A CN102979643B (en) | 2012-12-07 | 2012-12-07 | A kind of crankcase combination reducing machine oil loss |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210521821.0A CN102979643B (en) | 2012-12-07 | 2012-12-07 | A kind of crankcase combination reducing machine oil loss |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102979643A true CN102979643A (en) | 2013-03-20 |
| CN102979643B CN102979643B (en) | 2015-11-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210521821.0A Expired - Fee Related CN102979643B (en) | 2012-12-07 | 2012-12-07 | A kind of crankcase combination reducing machine oil loss |
Country Status (1)
| Country | Link |
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| CN (1) | CN102979643B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103306845A (en) * | 2013-06-28 | 2013-09-18 | 力帆实业(集团)股份有限公司 | Right crankcase of engine |
| CN103321771A (en) * | 2013-06-28 | 2013-09-25 | 力帆实业(集团)股份有限公司 | Left crankcase for engines |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1296600B1 (en) * | 1996-12-17 | 1999-07-14 | Honda Motor Co Ltd | CRANKCASE FIXING STRUCTURE FOR A TWO-STROKE INTERNAL COMBUSTION ENGINE. |
| WO2007026910A1 (en) * | 2005-08-30 | 2007-03-08 | Daihatsu Motor Co., Ltd. | Cylinder block and two-cycle multi-cylinder internal combustion engine with the same |
| CN201610796U (en) * | 2010-03-18 | 2010-10-20 | 重庆永发摩托车配件有限公司 | Motorcycle engine right crankcase exhaust gas chamber |
| CN202215324U (en) * | 2011-08-22 | 2012-05-09 | 远勤山 | Secondary gravity oil-gas separating mechanism |
| CN202300694U (en) * | 2011-09-09 | 2012-07-04 | 江门王野摩托车制造有限公司 | Waste gas separation structure in crank shaft box body |
| CN202991260U (en) * | 2012-12-07 | 2013-06-12 | 力帆实业(集团)股份有限公司 | Crankcase combination capable of reducing engine oil consumption |
-
2012
- 2012-12-07 CN CN201210521821.0A patent/CN102979643B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1296600B1 (en) * | 1996-12-17 | 1999-07-14 | Honda Motor Co Ltd | CRANKCASE FIXING STRUCTURE FOR A TWO-STROKE INTERNAL COMBUSTION ENGINE. |
| WO2007026910A1 (en) * | 2005-08-30 | 2007-03-08 | Daihatsu Motor Co., Ltd. | Cylinder block and two-cycle multi-cylinder internal combustion engine with the same |
| CN201610796U (en) * | 2010-03-18 | 2010-10-20 | 重庆永发摩托车配件有限公司 | Motorcycle engine right crankcase exhaust gas chamber |
| CN202215324U (en) * | 2011-08-22 | 2012-05-09 | 远勤山 | Secondary gravity oil-gas separating mechanism |
| CN202300694U (en) * | 2011-09-09 | 2012-07-04 | 江门王野摩托车制造有限公司 | Waste gas separation structure in crank shaft box body |
| CN202991260U (en) * | 2012-12-07 | 2013-06-12 | 力帆实业(集团)股份有限公司 | Crankcase combination capable of reducing engine oil consumption |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103306845A (en) * | 2013-06-28 | 2013-09-18 | 力帆实业(集团)股份有限公司 | Right crankcase of engine |
| CN103321771A (en) * | 2013-06-28 | 2013-09-25 | 力帆实业(集团)股份有限公司 | Left crankcase for engines |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102979643B (en) | 2015-11-25 |
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Granted publication date: 20151125 Termination date: 20201207 |