CN1445447A - Variable venturi type gasifier - Google Patents
Variable venturi type gasifier Download PDFInfo
- Publication number
- CN1445447A CN1445447A CN 03120472 CN03120472A CN1445447A CN 1445447 A CN1445447 A CN 1445447A CN 03120472 CN03120472 CN 03120472 CN 03120472 A CN03120472 A CN 03120472A CN 1445447 A CN1445447 A CN 1445447A
- Authority
- CN
- China
- Prior art keywords
- piston
- variable
- cylinder
- venturi type
- aforementioned
- 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.)
- Pending
Links
Images
Landscapes
- Control Of The Air-Fuel Ratio Of Carburetors (AREA)
Abstract
The invention provides a variable venturi type carburetor capable of feedback control with a simplified structure. The variable venturi type carburetor comprising a cylinder part 13 and a fuel guide hole 14 being disposed on a carburetor body 11, opposed each other across an intake air flowing passage 12, and a piston 16 to which a needle 17 is fixed being driven by a wire 18 to move inside the cylinder part 13 up and down and thus to vary a venture diameter of the intake air flowing passage 12. The carburetor body 11 is adapted to have a housing part 15 communicating with the cylinder part 13, and also to house a sliding operation type variable resister 21 inside the housing part 15. Locking an operation lever 21b of the variable resister 21 to a locking part 16a provided on an upper circumference wall of the piston 16 enables the variable resister 21 to directly detect a position of the piston 16.
Description
Technical field
The present invention relates to the variable venturi type vaporizer in a kind of subsidiary two-wheel vehicle that prime mover arranged that is installed in automotive bicycle etc., specially refer to a kind of variable venturi type vaporizer that is called as slide valve type.
Background technique
In general, in the cart of subsidiary prime mover device such as automotive bicycle, piston can move up and down at the cylinder internal that do not coexist of throttle opening degree amount, therefore use a kind of variable venturi type vaporizer that makes the Venturi tube vary in diameter, just by this variable Venturi's pipe, even also can control when throttle valve is in bigger opening degree.
Fig. 6 is the sectional view of the variable venturi type vaporizer that always uses in the tradition, and as shown in the figure, the main body 1 that forms the vaporizer shell is provided with air suction way 2 and cylinder 3 and fuel via 4.Cylinder 3 and fuel via 4 relatively are located at the two ends of air suction way 2, and fuel via 4 is communicated with fuel tank 5.The piston 6 that is located at cylinder 3 inside can move by easy on and off, is fixing probe 7 and cable 8 on this piston 6 respectively.Probe 7 is coniform, is inserted in the inside of fuel via 4.In addition, the upper, open end of cylinder 3 is sealed by lid 9, is provided with spring 10 between lid 9 and the piston 6.Cable 8 passes lid 9 and stretches to main body 1 outside, and is connected with throttle valve handle (figure slightly).
Variable venturi type vaporizer according to above-mentioned formation is commonly referred to as slide valve type, and piston 6 itself will be as the throttle valve of sliding piston type.That is to say, the operator carries out rotating operation to the throttle valve handle that is located on the handle device, by cable 8 direct driven plunger 6 piston is moved up and down in cylinder 3, meanwhile the Venturi tube diameter of air suction way 2 changes, the opening area of fuel via 4 changes, and therefore can adjust the fuel quantity that is ejected in the air suction way 2.
But, in the today of constantly appealing environmental problems such as exhaust restriction, for the subsidiary cart that prime mover is arranged, begun to attempt confirming the engine combustion situation and carrying out feedback control, but in traditional variable venturi type vaporizer, owing to only directly drive, so can't be corresponding with such feedback control by 9 pairs of pistons 6 of cable.
Proposed a kind of when making piston up-down by driving force at motor, utilize potentiometer to detect the way of the amounts of rotation of this motor, the go forward side by side scheme of variable venturi type vaporizer of line slip control of the supply condition that detects fuel thus, perhaps this motion can carry out the feedback control of vaporizer from the broad sense angle.But, this variable venturi type vaporizer of having been known by people be in the driving force of motor when gear and rotatingshaft are passed to piston, detect the amounts of rotation of motor by potentiometer with gear engagement, therefore be necessary mounting point relative between motor and potentiometer and the gear is adjusted, and motor and potentiometer and gear must be contained in the outside of vaporizer main body in addition, and therefore assembling up when maintenance waits can be pretty troublesome.
Summary of the invention
The present invention provides a kind of variable venturi type vaporizer that carries out feedback control simple in structure in view of the actual conditions of conventional art.
In order to reach above purpose, in the variable venturi type vaporizer that the present invention relates to, comprising: the piston of being furnished with the main body of cylinder and fuel via on the relative position at air suction way two ends, in said cylinder, moving up and down at the opening degree of throttle valve, with this piston interlock and can change the probe of opening area of above-mentioned fuel via and the lid that covers the said cylinder opening end.Be provided with the accommodating part that is communicated with cylinder in the aforementioned body, inside, accommodating part is furnished with the sensor that is used for detecting the piston action position.
In having the variable venturi type vaporizer of said structure, directly detect the operating position of piston by the sensor that is contained in the vaporizer body interior, therefore can be with the information of signal of sensor as the opening degree of vaporizer, carry out feedback control again, can realize the system that makes engine combustion efficient higher like this.In addition, because in the accommodating part that sensor is arranged on cylinder on the main body is communicated with, it and vaporizer belong to integrated unit, so structure obtains simplifying assembling and improves greatly.
In said structure, sensor is used for detecting the working position of piston, can select variable resistor or encoder etc. for use, but still be the electronic equipment that the fixing part of the mobile output signal that has movable part and pass through movable part as variable resistor is selected in hope for use, movable part and piston wall cooperated simultaneously fixing part is fixed in the accommodating part.
Especially, when sliding operation type variable resistor is used as the sensor use, if operating stem and piston wall are cooperated, thereby just can be accompanied by moving up and down of piston operating stem is operated the resistance value that output changes, do like this and can reach satisfied effect by simplified structure.
In addition, the rotary operation type variable resistor is used as under the situation of sensor use, if power switching device is located between operating body and the piston, the moving up and down of piston just will be converted to rotation by power switching device and pass to operating body then, therefore can export the resistance value of variation by the rotating operation of operating body.Piston wall is provided with the tooth bar of straight line shape, carves on the side face of the operating body of variable resistor and is provided with a lot of teeth, and the power changing apparatus here can form by the engagement of these tooth bars and tooth.
Brief description of drawings
The sectional view of the variable venturi type vaporizer that Fig. 1, the 1st kind of embodiment relate to.
Fig. 2, along the sectional view of A-A line among Fig. 1.
The stereogram of the pith of Fig. 3, this variable venturi type vaporizer.
The sectional view of the variable venturi type vaporizer that Fig. 4, the 2nd kind of embodiment relate to.
Fig. 5, along the sectional view of B-B line among Fig. 4.
The sectional view of the variable venturi type vaporizer in Fig. 6, the conventional case.
The specific embodiment of invention
Below with reference to the description of drawings inventive embodiment, Fig. 1 represents the sectional view of the variable venturi type vaporizer that the 1st kind of embodiment relates to, and Fig. 2 is the sectional view along A-A line among Fig. 1, and Fig. 3 is the stereogram of the pith of this variable venturi type vaporizer.
As shown in the figure, the variable venturi type vaporizer that present embodiment relates to is called as the slide valve type vaporizer, the main body 11 that forms the vaporizer shell is provided with air suction way 12, two ends up and down at this air suction way 12 are provided with cylinder 13 and fuel via 14 to ground relatively, and a side of cylinder 13 also is provided with accommodating part 15.Fuel via 14 communicates with fuel tank (figure slightly), and the fuel in the fuel tank sprays to air suction way 12 according to the opening area size of fuel via 14.Piston 16 can move up and down on cylinder 13 internal freedom ground, also is fixed with probe and cable 18 on this piston 16 respectively.Probe 17 is coniform, is inserted in the inside of fuel via 14.In addition, the upper opening of cylinder 13 is by lid 19 sealings that can dismounting, is provided with downwards the spring 20 to the piston application of force between lid 19 and piston 16.Cable 18 passes the outside that lid 19 is exported to main body 11, and is connected with throttle valve handle (figure slightly).
In the installment state of piston 16 shown in Figure 1, in a single day piston 16 is in the upper end of moving area, protruding part 13a will be in the lower end of guiding groove 16b, but operating stem 21b can not reach the position, the top of variable resistor 21, that is to say and can also be moved upward again.And,, when carrying out, at first lid 19 is unloaded from cylinder 13 as the maintenance work of changing probe 17 grades, spur cable 18 then the top of piston 16 in Fig. 1 moved.Like this, piston 16 and operating stem 21b can move towards the more top of the position, the top in the installment state, so just cooperating and can be disengaged between guiding groove 16b and the protruding part 13a.Like this, thereby, just piston 16 and probe 17 can be pulled out from main body 11, so can be changed patch work such as probe 17 by piston 16 being rotated remove cooperating between operating stem 21b and the clamping device 16a.In addition, after patch work is finished, can also install by above-mentioned inverse process.
In the above-mentioned variable venturi type vaporizer, the throttle valve handle that operator's operation is installed on the lever (figure slightly) makes it to rotate, by cable 20 directly driven plunger 16 it is moved up and down in cylinder 13, therefore the Venturi tube diameter of air suction way 12 changes, and probe 17 can make the opening area of fuel via 14 change, so the fuel quantity of sending in the air suction way just can obtain adjusting.At this moment, the operating stem 12b of variable resistor 21 can slide along with moving up and down of piston 16, the variation that variable resistor 21 resistance values can be used as in the working position of piston 16 is directly detected, therefore can carry out feedback control to the opening degree information that the output signal (resistance value) of the variable resistor 21 that obtains by lead 23 is used as vaporizer, and can flow to the air quantity of air suction way 12 at for example output signal adjustment of variable resistor 21, so improved the combustion efficiency of engine greatly.In addition, under the state that variable resistor 21 is installed on the printed base plate 22, it is assembled to the inside of accommodating part 15 easily, and, as long as the clamping device 16a of the operating stem 21b of variable resistor 21 and piston 16 is only blocked mutually to be cooperated, just can detect the working position of piston 16 by variable resistor 21, so assembling improves greatly.In addition, in the time of need changing probe 17 maintenance works such as grade, need not specially pull down variable resistor 21, just can take off lid 19 piston 16 is extracted from cylinder 13, so maintenance work can be convenient.
Fig. 4 represents the sectional view of the variable venturi type vaporizer that the 2nd kind of embodiment relates to, and Fig. 5 represents that along the sectional view of B-B line among Fig. 4, the part corresponding with earlier figures 1-Fig. 3 all adopts same-sign here.
The difference of present embodiment and aforementioned the 1st kind of embodiment's maximum is that the sensor of ensconcing in the accommodating part 15 in this example is used as rotary operation type variable resistor 26 uses, and other structures are basic identical.In other words, box framework (fixing part) 26a and this framework 26a that this variable resistor 26 has built-in resistance board (figure slightly) go up operating handle (movable part) 26c that is fixing on the outstanding rotatingshaft 26b, making operating handle 26c is that rotate at the center with rotatingshaft 26b, and rotatingshaft 26b goes up slip of installing (figure slightly) will slide and cause resistance value on resistance board change.In addition, have a lot of tooth 26d on the side face of operating handle 26c, make prominent tooth bar 16c engagement of establishing on these teeth 26d and piston 16 upper walls.Tooth 26d and tooth bar 16c have constituted power switching device, piston 16 above-below direction straight line motions are converted to the rotation of operating handle 26c by this power switching device.
In the installment state of piston 16 shown in Figure 4, in a single day piston 16 is positioned at the upper end of moving area, protruding part 13a can enter the lower end of guiding groove 16b, but operating handle 26c also can not arrive the position, the top of variable resistor 26, can also carry out mechanical rotation by clockwise direction in other words.In the maintenance work processes such as replacing probe, at first lid 19 is taken off from cylinder 13, draw cable 18 that the top of piston 16 in Fig. 4 moved then, operating handle 26c will continue clockwise direction and rotate, engagement between tooth 26d and the tooth bar 16c can be disengaged, piston 16 can be further the place, more top of position, the top in shape state really move.Like this, guiding groove 16b can throw off the cooperation that makes between the two from protruding part 13a and remove, and piston 16 and probe 17 can be extracted from main body 11.At this moment, variable resistor 26 can be connected after the engagement releasing just between tooth 26d and tooth bar 16c at once with by device (figure slightly), can reach the clockwise least significant end position of rotational angle range like this.Therefore, change patch work one end such as probe 17, the terminal position that clockwise rotates direction will be aimed in the position of variable resistor 26, if assemble according to above-mentioned opposite order, just can make the piston 16 and the output of variable resistor 26 return to the state before of repairing.
In above-mentioned variable venturi type vaporizer, the throttle valve handle that the operator operates on the lever (figure slightly) rotates it, by cable 20 directly driven plunger 16 in cylinder 13, move up and down, therefore the Venturi tube diameter of air suction way 12 changes, and probe 17 can make the opening area of fuel via 14 change, and makes the fuel quantity of sending into air suction way 12 can obtain adjusting.At this moment, moving up and down of piston 16 will pass to tooth 26d and operating handle 26c is rotated by tooth bar 16c, and the working position of piston 16 can be directly resistance change by variable resistor 26 be detected, therefore the same with above-mentioned the 1st kind of embodiment, the output signal (resistance value) of the variable resistor 21 that obtains by lead 23 can be used as vaporizer opening degree information and carry out feedback control.
The effect of invention
Several embodiment according to the above description, the present invention has following effect.
Because the accommodation section that is communicated with cylinder is arranged on the vaporizer main body, this accommodation section simultaneously Inside is furnished with the sensor of variable resistance etc., can go out vapour by the sensor direct-detection like this Therefore the operating position of the piston that moves up and down in the cylinder can be used as the output signal of sensor Vaporizer opening degree amount is carried out FEEDBACK CONTROL, to realize the system of engine efficient combustion. In addition Outward, in the accommodation section that sensor is designed in cylinder in the main body is communicated with, vaporizer and sensing Device forms integrated unit, so structure is simplified also greatly raising of assembling.
Claims (5)
1, a kind of variable venturi type vaporizer, it is characterized in that: comprise, the piston of being furnished with the main body of cylinder and fuel via on the relative position at air suction way two ends, in said cylinder, moving up and down at the opening degree of throttle valve, with this piston interlock and can change the probe of opening area of fuel via and the lid that covers the cylinder openings end
Aforementioned body is provided with the accommodating part that is communicated with cylinder, and the inside of this accommodating part is furnished with the sensor of the working position that is used for detecting piston.
2, variable venturi type vaporizer as claimed in claim 1, it is characterized in that: the sensor is a kind of electronic equipment that comprises the fixing device of movable device and the mobile output signal by this movable device, above-mentioned movable device and above-mentioned piston wall are cooperated, and the said fixing device is fixed in the aforementioned receiving means.
3, variable venturi type vaporizer as claimed in claim 2 is characterized in that: aforementioned electronic is to be made of the sliding operation type variable resistor that the slide by operating stem comes output resistance to change.
4, variable venturi type vaporizer as claimed in claim 2, it is characterized in that: aforementioned electronic is to be made of the rotary operation type variable resistor that the rotating operation by operating body comes output resistance to change, and is provided with the power switching device that straight line motion can be converted to rotation between aforementioned operation body and the aforementioned piston.
5, variable venturi type vaporizer as claimed in claim 4, it is characterized in that: aforementioned power switching device is made up of a lot of teeth that are located at the straight line type tooth bar on the above-mentioned piston wall and be located at quarter on the aforesaid operations body side face, and these tooth bars and tooth are meshed.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP200276157 | 2002-03-19 | ||
| JP2002076157A JP2003278602A (en) | 2002-03-19 | 2002-03-19 | Variable venturi type carburetor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1445447A true CN1445447A (en) | 2003-10-01 |
Family
ID=28035418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03120472 Pending CN1445447A (en) | 2002-03-19 | 2003-03-19 | Variable venturi type gasifier |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2003278602A (en) |
| CN (1) | CN1445447A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110017221A (en) * | 2018-01-10 | 2019-07-16 | 安德烈·斯蒂尔股份两合公司 | Vaporizer, the internal combustion engine with vaporizer and the method for running internal combustion engine |
| CN113124943A (en) * | 2021-04-28 | 2021-07-16 | 北京航空航天大学 | High-precision adjustable venturi based on grating ruler feedback |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6466798B2 (en) * | 2015-07-31 | 2019-02-06 | アルプス電気株式会社 | Carburetor device |
-
2002
- 2002-03-19 JP JP2002076157A patent/JP2003278602A/en not_active Withdrawn
-
2003
- 2003-03-19 CN CN 03120472 patent/CN1445447A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110017221A (en) * | 2018-01-10 | 2019-07-16 | 安德烈·斯蒂尔股份两合公司 | Vaporizer, the internal combustion engine with vaporizer and the method for running internal combustion engine |
| CN113124943A (en) * | 2021-04-28 | 2021-07-16 | 北京航空航天大学 | High-precision adjustable venturi based on grating ruler feedback |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2003278602A (en) | 2003-10-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1294048C (en) | Detector for throttle valve aperture | |
| CN1079869C (en) | Device for controlling operation of power excavators | |
| CN104728438B (en) | For the mechanism that transmission for vehicles acquiescence is parked | |
| CN1046344C (en) | Gear change mechanism | |
| CN1445447A (en) | Variable venturi type gasifier | |
| CN109591884B (en) | Electric control loader | |
| EP1104824B1 (en) | Vibrating tamper with single control lever | |
| CN1278891A (en) | Hydraulic machine with radial pistons and variable displacement | |
| CN101016866A (en) | Composite engine speed control | |
| CN2690611Y (en) | Throttle control heat dissipation device | |
| CN1124409C (en) | Machine operated by gas combustion engine | |
| CN1190562C (en) | Engine for earth rammer | |
| CN1247951A (en) | Device for rotating motion of accessory shaft | |
| CN200982247Y (en) | Waste gas relief valve operation device for diesel engine | |
| CN211852017U (en) | Electric control carburetor for range extender | |
| CN2727048Y (en) | Shipboard-outer machine shifting operation device | |
| CN1603660A (en) | V-belt type stepless speed change device | |
| CA2831708A1 (en) | Mixing block | |
| CN2531118Y (en) | Throttle controller for automatic speed variator | |
| CN2582990Y (en) | Marine gearshift device | |
| CN220687455U (en) | Throttle electric control device of diesel engine | |
| CN2303934Y (en) | Locking-type anti-theft device for gas circuit of internal combustion engine | |
| CN2594483Y (en) | Gasifier of vehicle engine | |
| CN2799311Y (en) | Gear shifting device of automobile | |
| CN2458422Y (en) | Anti-theft dog valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| AD01 | Patent right deemed abandoned | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |