CN202280547U - Plastic intake manifold of motorcycle engine - Google Patents
Plastic intake manifold of motorcycle engine Download PDFInfo
- Publication number
- CN202280547U CN202280547U CN 201120413601 CN201120413601U CN202280547U CN 202280547 U CN202280547 U CN 202280547U CN 201120413601 CN201120413601 CN 201120413601 CN 201120413601 U CN201120413601 U CN 201120413601U CN 202280547 U CN202280547 U CN 202280547U
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- CN
- China
- Prior art keywords
- negative pressure
- motorcycle engine
- pressure pipe
- inlet pipe
- air flue
- 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 - Lifetime
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Abstract
The utility model discloses a plastic intake manifold of a motorcycle engine, which comprises a manifold body, wherein an air passage penetrating through two ends of the manifold body is arranged in the manifold body; and a negative pressure pipe communicated with the air passage is arranged on the manifold body. The plastic intake manifold of the motorcycle engine is characterized in that the manifold body is molded by plastics, and the inner end of the negative pressure pipe stretches into the air passage and is emerged out of the inner wall of the air passage. The plastic intake manifold is formed by injection molding the plastics with light weight and heat resistance, so that the production processes can be reduced, and the production cost is decreased; simultaneously, due to the light weight of the intake manifold, thermal insulation parts have no need to be added when the intake manifold is arranged; and the inner end of the negative pressure pipe stretches into the air passage and is emerged out of the inner wall of the air passage, so that the probability that combustible air-fuel mixture is flowed out of the negative pressure pipe can be reduced, and the combustion of the engine is ensured.
Description
Technical field
The utility model relates to a kind of engine air inlet tube, particularly a kind of plastic inlet pipe that is used for motorcycle engine.
Background technique
Existing motorcycle engine suction tude generally adopts aluminum alloy to process or adopt the structure of aluminum alloy rubberizing; There is following defective in this suction tude: the one, and thermal insulation is poor, because the temperature of motor is very high, heat passes to Carburetor through metal suction tude easily; Influence its proper functioning; Therefore suction tude often will install thermal baffle and thermal baffle liner when mounted additional, needs the part of installation many, and trouble is installed; The 2nd, make trouble; Because the suction tude shape need adapt to the shape and the spatial position of motor and Carburetor; The two ends flange plate presents different shapes and space angle, and two flange plate end faces generally need sealing in installation, and metalwork does not often reach requirement in the uneven or spatial form position of attachment face; Two place's flange plate end faces all need adopt machinery reprocessing once just can install, and manufacturing procedure is many; The 3rd, the manufacture cost of metalwork is high; The 4th, the weight of metalwork is heavier.Simultaneously, also have through hole on the existing suction tude sidewall, be fitted with the negative pressure pipe on the through hole; The negative pressure pipe is generally copper pipe, and manufacture cost is high, and the inwall place that the negative pressure pipe is installed in suction tude is a hydraulically smooth surface; Flammable mixed oil and gas flows out through the negative pressure pipe easily, influences work of charcoal jar and engine combustion.In addition, be provided with the suction tude of flange plate for two ends, for conveniently stripped; Suction tude is generally forward and backward mould molding and forming, if forward and backward mould has mismatch slightly, will form the step barrier air at the paring line place of suction tude; Flammable mixed oil and gas can form turbulent flow through here the time; And the effective discharge area of air-flow also is reduced, and the motor charging efficiency reduces, the influence burning.
The model utility content
In order to overcome the deficiency of existing technology, the purpose of the utility model provides a kind of plastic inlet pipe of motor bike, has better heat-shielding performance and better tightness, and manufacturing process is few simultaneously, and cost is low.
The utility model solves the technological scheme that its technical problem adopted:
A kind of plastic inlet pipe of motorcycle engine comprises body, is provided with the air flue that connects two ends in the body, on body, also is provided with the negative pressure pipe that is communicated with air flue, and said body is by plastic shaping, and the inner of said negative pressure pipe is stretched into air flue and emitted the inwall of air outlet channel.
Further, said negative pressure pipe is a plastic tube.
Further, said negative pressure tube and tube body is by integrally moulded.
Further, the length that said negative pressure pipe is emerged in air flue is greater than 1mm, and less than air flue cross section radius herein.
The beneficial effect of the utility model is: the design's plastic inlet pipe adopts engineering plastics injection molded, and the flange plate end face that obtains is smooth smooth, meets the tightness requirement of assembling, need not the end face of flange plate is further processed again, reduces manufacturing procedure; Adopt the heat-resisting plastic material of light weight to reduce the weight of suction tude, the economical with materials cost need not increase parts such as thermal baffle and thermal baffle liner simultaneously, reduces the quantity of part yet; The one-body molded negative pressure pipe that is provided with on the suction tude further reduces the quantity of part, reduces the risk of gas leakage simultaneously; Negative pressure pipe the inner is stretched into air flue and is emitted the inwall of air outlet channel, can reduce flammable mixed oil and gas from the possibility that the negative pressure pipe flows out, and avoids the charcoal jar is produced harmful effect, guarantees engine combustion.
Further improvement as technique scheme; In the pipe of said negative pressure pipe is shoulder hole; The aperture section of shoulder hole is positioned at air flue inwall end, and the possibility that flammable mixed oil and gas flows out from the negative pressure pipe can be further lowered in being provided with of shoulder hole, and short aperture section is as getting the metering-orifice of negative pressure; Be convenient to change the size of getting negative pressure, easy to adjust.
As the further improvement of technique scheme, the joint of the external wall of said negative pressure tube and tube is provided with stiffening rib, and stiffening rib is strengthened negative pressure pipe root, makes it connecting end with body is difficult to rupture.
Further improvement as technique scheme; The two ends of said body are provided with flange plate; On flange plate, be embedded with metal lining or nut; Preferably, said lining or nut are lower than flange plate end face 0.1～1mm, improve the closed type that is connected between suction tude and motor or the Carburetor.
As the further improvement of technique scheme, said flange plate end face is provided with technology groove, and technology groove is positioned at the side of lining or nut.Technology groove the area that can reduce the flange plate end face is set, help improving the planeness of flange plate end face, thereby the sealing when improving the flange plate end face and connecting is saved cost of material simultaneously.
Further improvement as technique scheme; Said flange plate end face is provided with the seal ring mounting groove that seal ring is installed; Said seal ring mounting groove is provided with rubber seal around the air flue setting in the seal ring mounting groove, further improves the connection tightness of suction tude.
Further improvement as technique scheme; Said body is in the outlet internal diameter big 0.3～1.5mm of the import internal diameter of gas downstream end body section than gas upstream end body section by forward and backward mould molding and forming on the paring line of said forward and backward mould, this structure can effectively be avoided because of forward and backward mould generation mismatch the air flue inwall being impacted; Adopt the air flue inner wall smooth of the body of this structure; No step barrier air, flammable mixed oil and gas can not form whirlpool, turbulent flow through here the time, and also can not reduce the area that passes through of air-flow; Flammable mixed oil and gas can pass through smoothly, thereby guarantees the charging efficiency and the burning of motor.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
Fig. 1 is the structural representation of the utility model;
Fig. 2 is along the sectional view of A-A line among Fig. 1;
Fig. 3 is along the sectional view of B-B line among Fig. 1;
Fig. 4 is the rear view of Fig. 1;
Fig. 5 is along the sectional view of C-C line among Fig. 4;
Fig. 6 is the structural representation of the utility model air flue.
Embodiment
Referring to figs. 1 through Fig. 6, the plastic inlet pipe of a kind of motorcycle engine of the utility model comprises the body 1 that adopts the engineering plastics molding and forming; Be provided with the air flue 4 that connects two ends in the body 1, also be provided with the negative pressure pipe 5 that is communicated with air flue 4 at body 1 sidewall, said negative pressure pipe 5 and body 1 are by integrally moulded; The inner of said negative pressure pipe 5 is stretched into air flue 4 and emitted the inwall of air outlet channel 4, and is preferred, negative pressure pipe 5 in 4 li length of emerging of air flue greater than 1mm; And less than air flue 4 cross section radius herein; Negative pressure pipe 5 the inners are stretched into air flue 4 and are emitted the inwall of air outlet channel 4, can reduce flammable mixed oil and gas from the possibility that negative pressure pipe 5 flows out, and guarantee engine combustion.Be set to shoulder hole in the pipe of said negative pressure pipe 5; The aperture section of shoulder hole is positioned at air flue 4 inwall ends; Being provided with of shoulder hole can further be reduced the possibility that flammable mixed oil and gas flows out from negative pressure pipe 5, and the internal diameter that changes short aperture section just can change and get vacuum magnitude, and be easy to adjust.
Said negative pressure pipe 5 is provided with stiffening rib 10 with the joint of body 1 outer wall, and stiffening rib 10 is strengthened negative pressure pipes 5 roots, makes it connecting end with body 1 is difficult to rupture.
The two ends of said body 1 are provided with flange plate 2, on flange plate 2, are embedded with metal lining 6 or nut 7, and are preferred, and said lining 6 or nut 7 are lower than flange plate 2 end faces 0.1～0.8mm, the seal when improving the flange plate connection; Said flange plate 2 end faces are provided with technology groove 9; Technology groove 9 is positioned at the side of lining 6 or nut 7; Technology groove 9 the area that can reduce flange plate 2 end faces is set; Help improving the planeness of flange plate 2 end faces, thereby the seal when improving flange plate 2 end faces and connecting also can be saved materials simultaneously.Also be provided with the seal ring mounting groove 8 that seal ring is installed on flange plate 2 end faces, said seal ring mounting groove 8 is provided with around air flue 4, is provided with rubber seal in the seal ring mounting groove 8, the seal when further improving the flange plate connection.
With reference to Fig. 6; The forward and backward mould molding and forming of body 1 preferred employing in the present embodiment, air flue 4 is made up of the upstream extremity body section 41 of preceding mold forming and the downstream body section 42 of back mold forming, is in the outlet internal diameter big 0.3～1.5mm of the import internal diameter of gas downstream end body section 42 than gas upstream end body section 41 on the paring line 43 of said forward and backward mould; Be that gas leads to bassoon by tubule; Even forward and backward mould has mismatch also can not impact air flue 4 inwalls slightly, air flue 4 inwalls can not produce the step of barrier air, and flammable mixed oil and gas turbulent flow can not take place through here the time; Can pass through smoothly, thus the charging efficiency and the burning of assurance motor.
The plastic inlet pipe of the design's motorcycle engine; Its body 1 adopts engineering plastics injection molded; In light weight, cost is low, and because the heat-conducting property of plastics is relatively poor, suction tude need not increase parts such as thermal baffle and thermal baffle liner when being connected with Carburetor or motor; Body 1 two ends are provided with flange plate 2, and flange plate 2 end faces are provided with seal ring mounting groove 8 and technology groove 9, have guaranteed that the flatness of flange plate end face in manufacture process meets seal request, needn't process in addition, reduce manufacturing procedure; The one-body molded negative pressure pipe 5 that is provided with on the body 1 further reduces the quantity of part, reduces the risk of gas leakage; Negative pressure pipe 5 the inners are stretched into air flue 4 and are emitted the inwall of air outlet channel 4, can reduce the possibility that flammable mixed oil and gas flows out from the negative pressure pipe, guarantee engine combustion.
The above is merely the preferential mode of execution of the utility model, as long as realize that with basic identical means the technological scheme of the utility model purpose all belongs within the protection domain of the utility model.
Claims (10)
1. the plastic inlet pipe of a motorcycle engine; Comprise body (1); Be provided with the air flue (4) that connects two ends in the body (1); On body (1), also be provided with the negative pressure pipe (5) that is communicated with air flue (4), it is characterized in that: said body (1) is by plastic shaping, and the inner of said negative pressure pipe (5) is stretched into air flue (4) and emitted the inwall of air outlet channel (4).
2. the plastic inlet pipe of motorcycle engine according to claim 1, it is characterized in that: said negative pressure pipe (5) is a plastic tube.
3. the plastic inlet pipe of motorcycle engine according to claim 1 is characterized in that: said negative pressure pipe (5) and body (1) are by integrally moulded.
4. the plastic inlet pipe of motorcycle engine according to claim 1 is characterized in that: the length that said negative pressure pipe (5) is emerged in air flue (4) lining is greater than 1mm, and less than air flue (4) cross section radius herein.
5. the plastic inlet pipe of motorcycle engine according to claim 1 is characterized in that: be shoulder hole in the pipe of said negative pressure pipe (5), the aperture section of shoulder hole is positioned at air flue (4) inwall end.
6. the plastic inlet pipe of motorcycle engine according to claim 1 is characterized in that: said negative pressure pipe (5) is provided with stiffening rib (10) with the joint of body (1) outer wall.
7. the plastic inlet pipe of motorcycle engine according to claim 1; It is characterized in that: the two ends of said body (1) are provided with flange plate (2); On flange plate (2), be embedded with metal lining (6) or nut (7), said lining (6) or nut (7) are lower than flange plate (2) end face 0.1～1mm.
8. the plastic inlet pipe of motorcycle engine according to claim 7, it is characterized in that: said flange plate (2) end face is provided with technology groove (9), and technology groove (9) is positioned at the side of lining (6) or nut (7).
9. the plastic inlet pipe of motorcycle engine according to claim 7 is characterized in that: said flange plate (2) end face is provided with the seal ring mounting groove (8) that seal ring is installed, and said seal ring mounting groove (8) is provided with around air flue (4).
10. according to the plastic inlet pipe of the arbitrary described motorcycle engine of claim 1 to 9; It is characterized in that: said body (1) is in the outlet internal diameter big 0.3～1.5mm of the import internal diameter of gas downstream end body section (42) than gas upstream end body section (41) by forward and backward mould molding and forming on the paring line of said forward and backward mould (43).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120413601 CN202280547U (en) | 2011-10-27 | 2011-10-27 | Plastic intake manifold of motorcycle engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120413601 CN202280547U (en) | 2011-10-27 | 2011-10-27 | Plastic intake manifold of motorcycle engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202280547U true CN202280547U (en) | 2012-06-20 |
Family
ID=46226717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120413601 Expired - Lifetime CN202280547U (en) | 2011-10-27 | 2011-10-27 | Plastic intake manifold of motorcycle engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202280547U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422333A (en) * | 2015-12-11 | 2016-03-23 | 中国北方发动机研究所(天津) | Expanding flow guide structure of engine inlet |
| CN108915912A (en) * | 2018-07-11 | 2018-11-30 | 江阴市农业药械厂 | Heat-insulated and heat-resisting air inlet pipe pad and its manufacturing method |
-
2011
- 2011-10-27 CN CN 201120413601 patent/CN202280547U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422333A (en) * | 2015-12-11 | 2016-03-23 | 中国北方发动机研究所(天津) | Expanding flow guide structure of engine inlet |
| CN108915912A (en) * | 2018-07-11 | 2018-11-30 | 江阴市农业药械厂 | Heat-insulated and heat-resisting air inlet pipe pad and its manufacturing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120620 |