CN201310420Y - Novel air-supplementing needle valve - Google Patents
Novel air-supplementing needle valve Download PDFInfo
- Publication number
- CN201310420Y CN201310420Y CNU200820100552XU CN200820100552U CN201310420Y CN 201310420 Y CN201310420 Y CN 201310420Y CN U200820100552X U CNU200820100552X U CN U200820100552XU CN 200820100552 U CN200820100552 U CN 200820100552U CN 201310420 Y CN201310420 Y CN 201310420Y
- Authority
- CN
- China
- Prior art keywords
- cylindrical
- spool
- aciculiform
- valve core
- needle value
- 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
Links
- 230000033001 locomotion Effects 0.000 claims description 12
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 239000000446 fuel Substances 0.000 abstract description 10
- 238000002485 combustion reaction Methods 0.000 abstract description 7
- 230000008020 evaporation Effects 0.000 abstract description 7
- 238000001704 evaporation Methods 0.000 abstract description 7
- 230000009469 supplementation Effects 0.000 abstract 2
- 239000013589 supplement Substances 0.000 abstract 1
- 238000003795 desorption Methods 0.000 description 8
- 238000007599 discharging Methods 0.000 description 8
- 230000009286 beneficial effect Effects 0.000 description 5
- 239000000295 fuel oil Substances 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 238000004134 energy conservation Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- YBGRCYCEEDOTDH-JYNQXTMKSA-N evap protocol Chemical compound O=C1C=C[C@]2(C)[C@H]3[C@@H](O)C[C@](C)([C@@](CC4)(O)C(=O)CO)[C@@H]4[C@@H]3CCC2=C1.O([C@H]1C[C@@](O)(CC=2C(O)=C3C(=O)C=4C=CC=C(C=4C(=O)C3=C(O)C=21)OC)C(=O)CO)[C@H]1C[C@H](N)[C@H](O)[C@H](C)O1.COC1=C(O)C(OC)=CC([C@@H]2C3=CC=4OCOC=4C=C3C(O[C@H]3[C@@H]([C@@H](O)[C@@H]4O[C@H](C)OC[C@H]4O3)O)[C@@H]3[C@@H]2C(OC3)=O)=C1.C([C@H](C[C@]1(C(=O)OC)C=2C(=C3C([C@]45[C@H]([C@@]([C@H](OC(C)=O)[C@]6(CC)C=CCN([C@H]56)CC4)(O)C(=O)OC)N3C)=CC=2)OC)C[C@@](C2)(O)CC)N2CCC2=C1NC1=CC=CC=C21 YBGRCYCEEDOTDH-JYNQXTMKSA-N 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000009975 flexible effect Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 210000002445 nipple Anatomy 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
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- Control Of The Air-Fuel Ratio Of Carburetors (AREA)
Abstract
The utility model discloses a novel air-supplementing needle valve which comprises a valve body, a valve seat, a needle valve core and a cylindrical valve core, wherein the needle valve core and the cylindrical valve core are of long conical structures, the valve seat is provided with cylindrical passages respectively communicated with an air inlet and an air outlet of the needle valve; the needle valve core and the cylindrical valve core are longitudinally arranged in the cylindrical passages, and the long conical bottom of the needle valve core and the cylindrical valve core can be axially and movably matched with the cylindrical passages without intervals; the needle valve core and a plunger piston of a carburetor synchronously act but lag behind the start of the plunger piston of the carburetor, and the cylindrical valve core and the needle valve core synchronously act to close the adjusting valve after the needle valve core adjusts a travel route. The novel air-supplementing needle valve can adjust an air-supplementing amount according to the operation requirements of an engine, cuts air supplementation while confirming numerical low-speed rotation and high-speed rotation, supplements air in a medium rotation speed and realizes the aims of controllably adjustably comprehensively utilizing fuel evaporation and air supplementation (rare combustion) in front of the engine as well as energy saving and emission reduction so that the engine can be in an optimal operation state.
Description
Technical field
The utility model relates to a kind of explosive motor parts, particularly a kind of novel tonifying Qi needle value.
Background technique
Motorcycle engine is owing to be high-speed gasoline engine, and the fuel-air mixture forming process time is short, because incorporation time is short, can cause mixing inhomogeneous, so fuel combustion is insufficient, can CO and HC gas occur in tail gas, causes environmental pollution.For overcoming the above problems, motor is provided with air compensating system.In the prior art, making-up air device divides two kinds of electric controlled gas-compensation and mechanical tonifying Qi, and electrically controlled gas supplementing device comprises ECU (Electrical Control Unit) ECU and automatically controlled needle value, and is effective, controls emission compliance easily; But have the high shortcoming of cost, generally do not using also employing under the EFI situation.The machinery making-up air device is very low in engine speed (air-breathing frequency), and valve still is in normal working; After the rotating speed (air-breathing frequency) of motor increased a certain data of arrival, spring sheet was difficult to realize opening valve with the motor synchronizing frequency; Because the time is very short, spring sheet has little time to open and just has been in the malleation closed condition again, therefore often is in closed condition, still in tonifying Qi, does not but close not tonifying Qi when needing tonifying Qi at a high speed, thereby has influenced the discharging that motor must be controlled when low speed does not need tonifying Qi.
In addition, existing fuel engine must evaporate activated carbon canister by oil, to limit the dirty purpose that reduces discharging.After engine start, the fuel evaporation activated carbon canister is under the negative pressure opens working state, and high speed and low speed is desorption and adsorbed state all.And after the fuel oil of absorption is finished by desorption, can think that this passage is in long-term tonifying Qi state, and be equivalent to carry out secondary air compensating, do not need tonifying Qi when having idling, but still in tonifying Qi.
If adopt common modulating valve structure to regulate air inflow, then, influence the igniting and the idling performance of motor, and when running up, influence maximum power and grade ability at low engine speed and still tonifying Qi and desorption when running up.
Therefore, need transform the air compensating system of motor, can regulate air compensation according to the service condition of motor, and can open or cut off tonifying Qi according to engine speed, realize preceding controllable integrated use of tonifying Qi (lean combustion) of fuel evaporation and machine and purpose energy-conservation, that reduce discharging, thereby make motor can be in optimal operational condition.
The model utility content
In view of this, the purpose of this utility model provides a kind of novel tonifying Qi needle value, can regulate air compensation according to the service condition of motor, and open or cut off tonifying Qi according to engine speed, realize preceding controllable integrated use of tonifying Qi (lean combustion) of fuel evaporation and machine and purpose energy-conservation, that reduce discharging, thereby make motor can be in optimal operational condition.
Novel tonifying Qi needle value of the present utility model, comprise valve body and valve seat, the aciculiform spool and the cylindrical spool that also comprise the conico-acuminate structure, described valve seat is provided with cylindrical channel, the suction port of needle value and air outlet communicate with cylindrical channel respectively, described aciculiform spool and cylindrical spool vertically are arranged in the cylindrical channel, the long conical bottom of aciculiform spool and cylindrical spool and cylindrical channel do not have the gap and can move axially and cooperate, the plunger synchronization motion of aciculiform spool and Carburetor, the desired location of the long conical bottom of aciculiform spool makes needle value lag behind the Carburetor plunger and opens, and cylindrical spool and aciculiform spool synchronization motion also close needle value after aciculiform spool adjustment stroke.
Further, the length of the conico-acuminate structure of described aciculiform spool is greater than suction port and air outlet) between axial distance, described cylindrical spool is arranged at aciculiform spool front end;
Further, described engine speed is during less than 2000r/min, and the long conical bottom of aciculiform spool is between the suction port and air outlet that are communicated with cylindrical channel; Engine speed during greater than 6500r/min cylindrical spool do not have the gap and cooperate between the suction port and air outlet that are communicated with cylindrical channel;
Further, described needle value also comprises return spring and the slide block that is arranged in the valve cavity, described slide block is fixedlyed connected with aciculiform spool afterbody and can be vertically moved along valve cavity, described return spring one end withstands the valve cavity end, the other end withstands slide block, the throttle drag-line of Carburetor is provided with respectively two branch ends that are connected with slide block or aciculiform spool afterbody with the Carburetor plunger, two branch end synchronization motions of described throttle drag-line control;
Further, the spring that holds out against with compression pretightening force is set vertically in the described cylindrical channel, described spring one end and the valve seat relative fixed of holding out against, the other end withstands cylindrical spool;
Further, described cylindrical spool and aciculiform spool needle tip portion fixedly install;
Further, the afterbody of described aciculiform spool is the cylindrical body with the long conical bottom one of aciculiform spool, the equal diameters of cylindrical diameter and long conical bottom.
Novel tonifying Qi needle value of the present utility model, adopt double spool needle value with Carburetor plunger synchronization motion, can be according to the service condition of motor, regulate air compensation, and when the running up of the low speed of determining numerical value and definite numerical value, cut off tonifying Qi, carry out tonifying Qi when mediating rotating speed, realize preceding controllable integrated use of tonifying Qi (lean combustion) of fuel evaporation and machine and purpose energy-conservation, that reduce discharging; During low-speed running, needle value is in closed condition, and EVAP Evaporative System not desorption, not tonifying Qi this moment so just do not influence the starting and the idling performance of motor; When running up, needle value still is in closed condition, EVAP Evaporative System is desorption, not tonifying Qi not, do not influence peak output, the grade ability of motorcycle, and be beneficial to the NOx that reduces in the tail gas, needle value was in open mode when engine speed was between setting low speed and the high speed, and EVAP Evaporative System is in detachment status, helps the fuel oil desorption in the canister like this; Nos fuel oil or seldom time the in the canister utilizes canister to realize tonifying Qi (lean combustion) before the machine, and reduction CO and THC reach the final purpose of energy-saving and emission-reduction, and the utility model is simple in structure, and is easy for installation, and cost is low; Adopt the needle value cored structure of conico-acuminate, can be according to the linear air compensation that increases of opening travel, the tonifying Qi curve of control and mixed gas air inlet curve adapt, and reach the two good fit purpose, make motor keep optimum operation.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further described.
Fig. 1 is a needle value low speed closed condition structural representation;
Fig. 2 is a needle value high speed closed condition structural representation;
Fig. 3 is the another kind of mode of execution structural representation of needle value.
Embodiment
Fig. 1 is a needle value low speed closed condition structural representation, Fig. 2 is a needle value high speed closed condition structural representation, as shown in the figure: the novel tonifying Qi needle value of present embodiment comprises valve body 1 and valve seat 2, the aciculiform spool 3 and the cylindrical spool 9 that also comprise the conico-acuminate structure, during use, needle value is installed on the vehicle frame by fixing ear 6, installs simple and conveniently, improves the high working efficiency of installing; Needle value is arranged at the near-end of blowdown pipe 8 and engine body 1 combi inlet port joint, just be installed in after fuel oil absorption and the desorption canister, be beneficial to and realize fuel evaporation and preceding controllable integrated use of tonifying Qi (lean combustion) of machine and purpose energy-conservation, that reduce discharging, needle value is nearer apart from engine body 1 combi inlet port, regulate air compensation and be quick on the draw instant effect for mixed gas;
Vertically be provided with in the cylindrical channel 21 have a compression pretightening force hold out against spring 15, hold out against spring 15 1 ends near on the plug 10 that is spun on the valve seat 2 with valve seat 2 relative fixed, the other end withstands cylindrical spool 9, make cylindrical spool 9 and aciculiform spool 33 needle point front end synchronization motions, and after aciculiform spool 3 adjustment stroke, cylindrical spool 9 moves between suction port 22 and the air outlet 23 needle value cuts out; Adjustment stroke is meant that aciculiform spool 3 is being opened to the process that gas flow increases gradually, and is corresponding with the minimum and maximum speed scope that motor is set;
Adopt aciculiform spool 3 structures of conico-acuminate, increasing along with opening travel, gap between aciculiform spool 3 cone-shaped sections and the cylindrical channel 21 becomes big gradually, air compensation also increases gradually, be beneficial to according to the engine mixed gas air inflow and regulate air compensation, because the tonifying Qi curve of aciculiform spool 3 controls of conico-acuminate and the mixed gas air inlet curve of Carburetor adapt, and reach good fit purpose synchronously, guarantee that tail gas is qualified when making motor keep optimum operation; Slow-speed of revolution setting value and the high speed setting value different according to motor adopt the oval wimble structure length of different aciculiform spools 3, use simple and convenient;
Needle value also comprises return spring 5 and the slide block 4 that is arranged in the valve cavity 13, slide block 4 is fixedlyed connected with aciculiform spool 3 afterbodys and can be vertically moved along valve cavity 13, in the present embodiment, the afterbody of aciculiform spool 3 is and the cylindrical body of growing the conical bottom one, the diameter of cylindrical structure equates with the oval cone bottom diameter of aciculiform spool 3, slide block 4 is set, can guarantee the radial position of aciculiform spool 3, thereby guarantee the coaxality of aciculiform spool 3 and cylindrical channel 21, make between aciculiform spool 3 and the cylindrical channel 21 to seal reliably, move smooth and easy; The afterbody of aciculiform spool 3 is and the isometrical cylindrical body of the long conical bottom of aciculiform spool 3 to be beneficial to the coaxality that guarantees aciculiform spool 3 and cylindrical channel 21; Return spring 5 one ends withstand valve cavity 13 ends, the other end withstands slide block 4, the throttle drag-line of engine and carburetor is provided with respectively two branch ends that are connected with aciculiform spool 3 afterbodys with the Carburetor plunger, one of them divides end 7 to connect aciculiform spool 3 afterbodys, two branch end synchronization motions of throttle drag-line control, to guarantee the plunger synchronization motion of aciculiform spool 3 and Carburetor, when aciculiform spool 3 is in the state that makes the needle value unlatching, aciculiform spool 3 cone-shaped sections are radially relative with air outlet 23, air and enter by suction port 22 and enter air outlet 23 by the gap between aciculiform spool 3 cone-shaped sections and the cylindrical channel 21 from the mixed gas of the fuel-steam of fuel tank, increasing along with opening travel, gap between aciculiform spool 3 cone-shaped sections and the cylindrical channel 21 becomes big gradually, air compensation also increases gradually, guarantees to adapt with the tolerance of mixed gas; Aciculiform spool 3 continues to open, engine speed improves, and while cylindrical spool 9 and aciculiform spool 3 uplink synchronizations are when engine speed reaches setting value, cylindrical spool 9 is between the suction port 22 and air outlet 23 of cylindrical channel 21 connections, closes the needle value air flue; When loosening the throttle drag-line, the air-fuel mixture amount that Carburetor enters engine body reduces, return spring 5 acts on slide block 4, overcome and hold out against spring 15, promote aciculiform spool 3 returns, when engine speed was lower than setting value, the conical lower portion of aciculiform spool 3 was got back between suction port 22 and the air outlet 23, and the needle value air flue is closed; Valve cavity 13 ends are provided with through hole 14, and the branch end 7 of throttle drag-line 6 passes through hole 14 and is connected with aciculiform spool 3 afterbodys, does not have eccentric force during the application of force, are beneficial to the flexible action that guarantees aciculiform spool 3; Certainly, dividing end 7 to be not limited to be connected with aciculiform spool 3 afterbodys, also can be to be connected on the slide block 4, because aciculiform spool 3 is fixedlyed connected with slide block 4, also can realize the utility model purpose;
In the present embodiment, engine speed is during less than 2000r/min, and the long conical bottom of aciculiform spool 3 is between the suction port 22 and air outlet 23 that are communicated with cylindrical channel 21, and needle value cuts out, and does not influence starting ignition, idling performance and the discharging of motorcycle; Engine speed is during greater than 6500r/min, and cylindrical spool 9 no gaps cooperate between the suction port 22 and air outlet 23 that are communicated with cylindrical channel 21, and needle value cuts out, and does not influence the peak output and the grade ability of motorcycle; Engine speed is higher than 2000r/min and when being lower than 6500r/min, needle value airway open and linear air inlet, after can realizing increasing the fuel evaporation canister, do not influence discharging, and after the basic desorption of the fuel oil (diurnal breathing loss and hot soak loss) of canister absorption finishes, can utilize canister to realize secondary air compensating, reach the final purpose of energy-saving and emission-reduction.
In the present embodiment, valve seat 2 is made one with valve body 1, make needle value simple and compact for structure, the air inlet pipe nipple 11 that is connected with the suction port 22 and the air outlet 23 of cylindrical channel 21 respectively and the pipe nipple 12 of giving vent to anger are set on the valve body 1, the convenient blowdown pipe 8 that connects, make the installation of needle value simple and convenient, improve the high working efficiency of installing.
Fig. 3 is the another kind of mode of execution structural representation of needle value, as shown in the figure: the difference of present embodiment and the foregoing description is: the setting that is fixed as one of cylindrical spool 9 and aciculiform spool 3 needle point ends, simple and compact for structure, do not need installation to hold out against spring, flexible movements.
Explanation is at last, above embodiment is only unrestricted in order to the explanation the technical solution of the utility model, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not breaking away from the aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of the claim scope of the present utility model.
Claims (8)
1. novel tonifying Qi needle value, comprise valve body (1) and valve seat (2), it is characterized in that: the aciculiform spool (3) and the cylindrical spool (9) that also comprise the conico-acuminate structure, described valve seat (2) is provided with cylindrical channel (21), the suction port of needle value (22) and air outlet (23) communicate with cylindrical channel (21) respectively, described aciculiform spool (3) and cylindrical spool (9) vertically are arranged in the cylindrical channel (21), the long conical bottom of aciculiform spool (3) and cylindrical spool (9) can move axially with the no gap of cylindrical channel (21) and cooperate, the plunger synchronization motion of aciculiform spool (3) and Carburetor, the desired location of the long conical bottom of aciculiform spool (3) makes needle value lag behind the Carburetor plunger and opens, and cylindrical spool (9) is with aciculiform spool (3) synchronization motion and after aciculiform spool (3) adjustment stroke needle value cuts out.
2. novel tonifying Qi needle value according to claim 1, it is characterized in that: the length of the conico-acuminate structure of described aciculiform spool (3) is greater than the axial distance between suction port (22) and air outlet (23), and described cylindrical spool (9) is arranged at aciculiform spool (3) front end.
3. novel tonifying Qi needle value according to claim 2 is characterized in that: described engine speed is during less than 2000r/min, and the long conical bottom of aciculiform spool (3) is positioned between the suction port (22) and air outlet (23) that is communicated with cylindrical channel (21); Engine speed during greater than 6500r/min cylindrical spool do not have the gap and cooperate and be positioned between the suction port (22) and air outlet (23) that is communicated with cylindrical channel (21).
4. novel tonifying Qi needle value according to claim 3, it is characterized in that: described needle value (5) also comprises return spring (5) and the slide block (4) that is arranged in the valve cavity (13), described slide block (4) is fixedlyed connected with aciculiform spool (3) afterbody and can be vertically moved along valve cavity (13), described return spring (5) one ends withstand valve cavity (13) end, the other end withstands slide block (4), the throttle drag-line (6) of Carburetor is provided with respectively two branch ends that are connected with slide block (4) or aciculiform spool (3) afterbody with the Carburetor plunger, two branch end synchronization motions of described throttle drag-line (6) control.
5. according to the described novel tonifying Qi needle value of the arbitrary claim of claim 1 to 4, it is characterized in that: vertically be provided with in the described cylindrical channel (21) have a compression pretightening force hold out against spring (15), described spring (15) one ends and valve seat (2) relative fixed of holding out against, the other end withstands cylindrical spool (9).
6. according to the described novel tonifying Qi needle value of the arbitrary claim of claim 1 to 4, it is characterized in that: described cylindrical spool (9) fixedly installs with aciculiform spool (3) needle point end.
7. novel tonifying Qi needle value according to claim 5 is characterized in that: the afterbody of described aciculiform spool (3) for the cylindrical body of the long conical bottom one of aciculiform spool (3), cylindrical diameter and the equal diameters of growing conical bottom.
8. novel tonifying Qi needle value according to claim 6 is characterized in that: the afterbody of described aciculiform spool (3) for the cylindrical body of the long conical bottom one of aciculiform spool (3), cylindrical diameter and the equal diameters of growing conical bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820100552XU CN201310420Y (en) | 2008-11-14 | 2008-11-14 | Novel air-supplementing needle valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820100552XU CN201310420Y (en) | 2008-11-14 | 2008-11-14 | Novel air-supplementing needle valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201310420Y true CN201310420Y (en) | 2009-09-16 |
Family
ID=41107674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820100552XU Expired - Fee Related CN201310420Y (en) | 2008-11-14 | 2008-11-14 | Novel air-supplementing needle valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201310420Y (en) |
-
2008
- 2008-11-14 CN CNU200820100552XU patent/CN201310420Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20090916 Termination date: 20121114 |