CN100572787C - Samll size petrol engine carburetor electronic control quantity hole and flow control method thereof - Google Patents
Samll size petrol engine carburetor electronic control quantity hole and flow control method thereof Download PDFInfo
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- CN100572787C CN100572787C CNB2006101676801A CN200610167680A CN100572787C CN 100572787 C CN100572787 C CN 100572787C CN B2006101676801 A CNB2006101676801 A CN B2006101676801A CN 200610167680 A CN200610167680 A CN 200610167680A CN 100572787 C CN100572787 C CN 100572787C
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- piezoelectric constant
- metering
- orifice
- twin lamella
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 241000446313 Lamella Species 0.000 claims abstract description 63
- 239000000295 fuel oil Substances 0.000 claims abstract description 24
- 239000000446 fuel Substances 0.000 claims description 23
- 239000006260 foam Substances 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 5
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 abstract description 2
- 239000000919 ceramic Substances 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
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Abstract
Samll size petrol engine carburetor electronic control quantity hole and flow control method thereof relate to petrol engine gasoline air mixture ratio control technique.The present invention utilizes the piezoelectric constant twin lamella to replace solenoid valve of the prior art as switching element, adjust by air jet or the air of fuel oil metering-orifice or the mean flowrate of fuel oil, make the structure of electronic control metering-orifice simplify greatly, have simultaneously that volume is little, low in energy consumption, speed of response is fast, price is low, be convenient on the put-put Carburetor, install and use.
Description
Technical field
The present invention relates to a kind of controlling method of petrol engine carburetor metering-orifice flow, relate to petrol engine gasoline air mixture ratio control control techniques.Belong to the petrol engine carburetor technical field.
Background technique
Traditional mechanical type carbureter fuel supply system, be air jet and fuel oil metering-orifice with fixed dimension, the physical dimension of metering-orifice is once after determining, when motor moves under different operating modes, air and fuel flow by air jet or fuel oil metering-orifice are exactly certain, can not adjust, thereby can not be provided at air fuel ratio proper when moving under this operating mode.
In order to reduce the fuel consume of automobile, reduce the pollution that exhaust causes atmosphere, the eighties, the motor petrol motor had once adopted the carburetor-electronically controled technology.This technology is to adjust motor enters engine mixed gas under various operating conditionss air fuel ratio by the electronic control metering-orifice, makes it approach the optimum state.For example the electronic controlled carburetor of the direct adjustment fuel mode of General Motors Corporation's employing is directly to control the ratio that metering-orifice opens and closes the time with solenoid valve, changes the flow of fuel oil, adjusts air fuel ratio, and structure as shown in Figure 1.Among the figure, the solenoid valve of control air fuel ratio and main jet are formed a kind of electronic control metering-orifice that main fuel feeding is of controlling.When electric current passed through electromagnetic valve coil 1, it was descending to drive needle-valve 2, and metering-orifice 4 is closed; When cutting off coil current, under the effect of return spring 3, needle-valve is released, and metering-orifice 4 is opened.The frequency of this system's solenoid valve energising is 10Hz, and promptly each cycle that opens and closes is 0.1 second.Usually will in one-period, account for the ratio in whole cycle current"on"time and be called dutycycle.Dutycycle is big more, promptly the time of each periodic quantity bore closure long more, few more by the fuel oil of metering-orifice, then mixed gas is rare more.Method with changing dutycycle promptly changes the time that metering-orifice on average opens and closes, thereby changes the mean flowrate by the metering-orifice fuel oil, to reach the purpose that changes air fuel ratio.Because the volume of electromagnetic valve coil is big, and needs bigger driving current, speed of response is slow, therefore is not easy to install and use in the put-put Carburetor.
Summary of the invention
The purpose of this invention is to provide a kind of Samll size petrol engine carburetor electronic control quantity hole and flow control method thereof, promptly utilize the piezoelectric constant twin lamella as the switching element replacement of solenoid valve, adjust by the air of air jet or fuel oil metering-orifice or the mean flowrate of fuel oil, the volume that available technology adopting electromagnetic coil and noticeable degree air fuel ratio brought is big to solve, complex structure, power consumption is big and the high deficiency of cost, thereby is not easy to install and use in the put-put electronically controlled carburetor.
Technological scheme of the present invention is as follows:
A kind of flow control method of Samll size petrol engine carburetor electronic control quantity hole is characterized in that this method carries out as follows:
1) on Carburetor, installs a piezoelectric constant twin lamella additional, one end of piezoelectric constant twin lamella is fixed, the other end is cantilever position, makes the center line of metering-orifice vertical with the plane of piezoelectric constant twin lamella, and the center line of piezoelectric constant twin lamella cantilever end and the centrally aligned of metering-orifice;
2) on the piezoelectric constant twin lamella, apply the pulsed voltage of a fixed frequency and fixed amplitude,, control opening or closing of metering-orifice, thereby control is by the air of metering-orifice or the mean flowrate of fuel oil with the distortion of piezoelectric constant twin lamella.
Step 2 of the present invention) ratio that opens or closes the opening and closing time in the employing change fixed cycle of control metering-orifice is controlled the mean flowrate of described metering-orifice in.
Electronic control metering-orifice of the present invention comprises fuel oil metering-orifice and air jet, and described fuel oil metering-orifice comprises main jet and idle metering jet; Described air jet comprises primary air metering-orifice and idling air jet.
The present invention also provides a kind of specific embodiment of described method, or rather, is on the basis of described method, and the concrete structure of a kind of electronic control fuel metering-orifice and air jet is provided.Its technological scheme is as follows:
A kind of put-put Carburetor electronic control fuel main jet, comprise the main jet that is connected with foam tube by screw thread, it is characterized in that: this electronic control main jet contains a slice piezoelectric constant twin lamella, this piezoelectric constant twin lamella one end is a fixed end, the other end is a cantilever end, the center line of described main jet is vertical with the plane of piezoelectric constant twin lamella, and the center line of piezoelectric constant twin lamella cantilever end and the centrally aligned of main jet.
The fixed end of the piezoelectric constant twin lamella described in the put-put Carburetor electronic control main jet of the present invention is fixed on the support by holding device, and this support is fixed on the foam tube by main jet.
For the cantilever end that makes the piezoelectric constant twin lamella can better contact with metering-orifice, on the basis of such scheme, be provided with elastic sealing strip at the cantilever end of described piezoelectric constant twin lamella; Convex also can be made in the center portion of the end face of described main jet.
Another embodiment of the present invention: a kind of put-put Carburetor electronic control air jet, comprise air jet, it is characterized in that: this electronic control air jet contains a slice piezoelectric constant twin lamella, this piezoelectric constant twin lamella one end is fixed on the Carburetor, the other end is a cantilever end, the center line of described air jet is vertical with the plane of piezoelectric constant twin lamella, and the center line of piezoelectric constant twin lamella cantilever end and the centrally aligned of air jet.
The present invention compared with prior art, have the following advantages and the high-lighting effect: the present invention utilizes the piezoelectric constant twin lamella to replace solenoid valve of the prior art, the open and close of control put-put carburetor fuel metering-orifice and air jet, thus the flow that passes through fuel oil or air jet adjusted.The structure of electronic control metering-orifice is simplified greatly, had simultaneously that volume is little, low in energy consumption, speed of response is fast, price is low, be more convenient on the put-put Carburetor, installing and using.
Description of drawings
Fig. 1 adjusts the structure diagram of the electronic control fuel metering-orifice of fuel flow for the available technology adopting solenoid valve.
Fig. 2 piezoelectric constant double wafer structure schematic representation.
Fig. 3 is the structural representation that utilizes piezoelectric constant twin lamella control fuel oil main jet embodiment provided by the invention.
Among the figure: the 1-electromagnetic valve coil; The 2-needle-valve; The 3-return spring; The 4-metering-orifice; The 5-piezoelectric ceramic; The 6-target; The electrode of 7-short circuit piezoelectric ceramic upper and lower surface; The 8-foam tube; The 9-main jet; The 10-support; The 11-holding device; 12-piezoelectric constant twin lamella; The 13-elastic sealing strip; The 14-projection.
Embodiment
Below in conjunction with accompanying drawing, principle of the present invention, structure and embodiment are further described.
In fact the flow control method of Samll size petrol engine carburetor electronic control quantity hole provided by the invention is exactly by the fuel oil of metering-orifice and the mean flowrate of air with the control of electronics controlled quentity controlled variable hole.This method is to install a piezoelectric constant twin lamella on Carburetor additional, the structure of this piezoelectric constant twin lamella is the thin slice of a long strip, when installing on Carburetor, the one end is fixed, fixing method is decided on the structure of concrete Carburetor, and the other end is cantilever position.The center line of the cantilever end of piezoelectric constant twin lamella should with the centrally aligned of metering-orifice, the center line of metering-orifice should keep vertical with the plane of piezoelectric constant twin lamella.Should maintain a certain distance between the cantilever end of piezoelectric constant twin lamella and the end face of metering-orifice.On the piezoelectric constant twin lamella, apply the pulsed voltage of a fixed frequency and fixed amplitude then,, control opening or closing of metering-orifice, thereby control is by the air of metering-orifice or the mean flowrate of fuel oil with the distortion of piezoelectric constant twin lamella.Fixing frequency generally is chosen as 10～20Hz, and the amplitude of pulsed voltage can be chosen according to the size of the amount of deformation of piezoelectric constant twin lamella, but general should not surpassing allows the safety voltage used on the automobile.
Utilize the distortion of piezoelectric constant twin lamella, control opening or closing of metering-orifice, adopt the method that changes fixed cycle pulsed voltage dutycycle in the prior art, change the ratio that metering-orifice opens and closes the time.The ratio (being dutycycle) that promptly changes the opening and closing time in the fixed cycle is controlled the mean flowrate of described metering-orifice.
Utilize the controlling method of electronic control metering-orifice flow of the present invention, both be applicable to the fuel oil metering-orifice, also be applicable to air jet.Described fuel oil metering-orifice comprises main jet and idle metering jet; Described air jet comprises primary air metering-orifice and idling air jet.
Fig. 2 is a piezoelectric constant double wafer structure schematic representation.This piezoelectric constant twin lamella is the both sides that two piezoelectric ceramics 5 sticked on target 6 by identical polarised direction respectively.Voltage is added between the electrode 7 of target 6 and short circuit piezoelectric ceramic upper and lower surface, because the direction of an electric field of two piezoelectric ceramics is just in time opposite up and down, and the polarised direction of two piezoelectric ceramics up and down of parallel piezoelectric constant twin lamella is identical, so the piezoelectric ceramic of the side that electric field is opposite with polarised direction elongation, an identical side shortens, cause the bending deflection of piezoelectric constant twin lamella, thereby produce the cantilever end displacement.
Fig. 3 is the specific embodiment of a fuel oil main jet provided by the invention, this electronic control fuel main jet, comprise the main jet 9 and a slice piezoelectric constant twin lamella 12 that are connected with foam tube 8 by screw thread, this piezoelectric constant twin lamella one end is a fixed end, the other end is a cantilever end, the center line of described main jet is vertical with the plane of piezoelectric constant twin lamella, and the center line of piezoelectric constant twin lamella cantilever end and the centrally aligned of main jet.The fixed end of piezoelectric constant twin lamella is fixed on the support 10 by holding device 11, and this support is fixed on the foam tube 8 by main jet.In order when main jet turn-offs, to have the better seal performance, elastic sealing strip 13 is housed at the cantilever end of piezoelectric constant twin lamella.The projection 14 concentric with main jet is processed in the center portion of main jet end face.During installation,, again its other end is fixed on the support 10 by holding device 11 center of the elastic sealing strip 13 on the piezoelectric constant twin lamella cantilever end and the centrally aligned of main jet.When applying voltage for the piezoelectric constant twin lamella, piezoelectric constant twin lamella 12 produces bending deflection, is used for controlling the switching of main jet.The voltage of applying for piezoelectric constant twin lamella 12 is the pulsed voltage of fixed frequency and fixed amplitude, changes the dutycycle of pulsed voltage, changes the mean flowrate by the main jet fuel oil serially, and the air fuel ratio that enters in the cylinder is controlled.
The concrete structure of air jet is identical substantially with the structure of fuel oil metering-orifice, but do not comprise foam tube, this piezoelectric constant twin lamella one end can be fixed on the Carburetor, the other end is a cantilever end, the center line of described air jet is vertical with the plane of piezoelectric constant twin lamella, and the center line of piezoelectric constant twin lamella cantilever end and the centrally aligned of air jet.This scheme can be according to its concrete structure and specific design.
Claims (8)
1. the flow control method of a Samll size petrol engine carburetor electronic control quantity hole is characterized in that this method comprises the steps:
1) on Carburetor, installs a piezoelectric constant twin lamella additional, one end of piezoelectric constant twin lamella is fixed, the other end is cantilever position, makes the center line of metering-orifice vertical with the plane of piezoelectric constant twin lamella, and the center line of piezoelectric constant twin lamella cantilever end and the centrally aligned of metering-orifice;
2) on the piezoelectric constant twin lamella, apply the pulsed voltage of a fixed frequency and fixed amplitude,, control opening or closing of metering-orifice, thereby control is by the air of metering-orifice or the mean flowrate of fuel oil with the distortion of piezoelectric constant twin lamella.
2. according to the flow control method of the described Samll size petrol engine carburetor electronic control quantity hole of claim 1, it is characterized in that: the ratio that opens or closes the opening and closing time in the employing change fixed cycle of control metering-orifice is controlled the mean flowrate of described metering-orifice described step 2).
3. according to the flow control method of claim 1 or 2 described Samll size petrol engine carburetor electronic control quantity holes, it is characterized in that: described electronic control metering-orifice comprises fuel oil metering-orifice and air jet, and described fuel oil metering-orifice comprises main jet and idle metering jet; Described air jet comprises primary air metering-orifice and idling air jet.
4. put-put Carburetor electronic control fuel main jet, comprise the main jet (9) that is connected with foam tube (8) by screw thread, it is characterized in that: this electronic control fuel main jet contains a slice piezoelectric constant twin lamella (12), this piezoelectric constant twin lamella one end is a fixed end, the other end is a cantilever end, the center line of described main jet is vertical with the plane of piezoelectric constant twin lamella, and the center line of piezoelectric constant twin lamella cantilever end and the centrally aligned of main jet.
5. according to the described put-put Carburetor of claim 4 electronic control fuel main jet, it is characterized in that: the fixed end of described piezoelectric constant twin lamella is fixed on the support (10) by holding device (11), and this support is fixed on the foam tube (8) by main jet.
6. according to claim 4 or 5 described put-put Carburetor electronic control fuel main jets, it is characterized in that: the cantilever end at described piezoelectric constant twin lamella is provided with elastic sealing strip (13).
7. according to the described put-put Carburetor electronic control fuel main jet of claim 6, it is characterized in that: the center portion of the end face of described main jet is convex.
8. put-put Carburetor electronic control air jet, comprise air jet, it is characterized in that: this electronic control air jet contains a slice piezoelectric constant twin lamella, this piezoelectric constant twin lamella one end is fixed on the Carburetor, the other end is a cantilever end, the center line of described air jet is vertical with the plane of piezoelectric constant twin lamella, and the center line of piezoelectric constant twin lamella cantilever end and the centrally aligned of air jet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101676801A CN100572787C (en) | 2006-09-22 | 2006-12-22 | Samll size petrol engine carburetor electronic control quantity hole and flow control method thereof |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610113297 CN1924337A (en) | 2006-09-22 | 2006-09-22 | Electronic controller hole for small-scale gasoline engine carburator |
| CN200610113297.8 | 2006-09-22 | ||
| CNB2006101676801A CN100572787C (en) | 2006-09-22 | 2006-12-22 | Samll size petrol engine carburetor electronic control quantity hole and flow control method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN101021188A CN101021188A (en) | 2007-08-22 |
| CN100572787C true CN100572787C (en) | 2009-12-23 |
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| CNB2006101676801A Active CN100572787C (en) | 2006-09-22 | 2006-12-22 | Samll size petrol engine carburetor electronic control quantity hole and flow control method thereof |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109695536B (en) * | 2019-01-27 | 2020-09-04 | 上海理工大学 | Lift type vertical axis wind turbine with swinging type gurney flap device and control method |
| CN115075987B (en) * | 2021-03-10 | 2024-02-23 | 广州汽车集团股份有限公司 | Pre-combustion chamber fuel gasification mixing system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1135573A (en) * | 1996-03-29 | 1996-11-13 | 陈海春 | Carburetter |
| US6116517A (en) * | 1996-07-01 | 2000-09-12 | Joachim Heinzl | Droplet mist generator |
| JP2003184656A (en) * | 2001-12-13 | 2003-07-03 | Tohatsu Corp | Carburetor for internal combustion engine |
| US20030173686A1 (en) * | 2001-03-15 | 2003-09-18 | Zama Japan | Fuel system of carburetor |
| CN1594869A (en) * | 2003-09-12 | 2005-03-16 | 日立优喜雅汽车配件有限公司 | Fuel injection valve |
-
2006
- 2006-12-22 CN CNB2006101676801A patent/CN100572787C/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1135573A (en) * | 1996-03-29 | 1996-11-13 | 陈海春 | Carburetter |
| US6116517A (en) * | 1996-07-01 | 2000-09-12 | Joachim Heinzl | Droplet mist generator |
| US20030173686A1 (en) * | 2001-03-15 | 2003-09-18 | Zama Japan | Fuel system of carburetor |
| JP2003184656A (en) * | 2001-12-13 | 2003-07-03 | Tohatsu Corp | Carburetor for internal combustion engine |
| CN1594869A (en) * | 2003-09-12 | 2005-03-16 | 日立优喜雅汽车配件有限公司 | Fuel injection valve |
Non-Patent Citations (2)
| Title |
|---|
| 压电陶瓷阀特性的研究. 温任林.工业仪表与自动化装置，第4期. 2000 |
| 压电陶瓷阀特性的研究. 温任林.工业仪表与自动化装置，第4期. 2000 * |
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| CN101021188A (en) | 2007-08-22 |
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Effective date of registration: 20090424 Address after: Kang Hong Industrial Park, 40 hi tech six road, Xi'an hi tech Industrial Development Zone, Shanxi, Xi'an Province, China: 710075 Applicant after: Xi'an Kanghong New Material Technology Co., Ltd. Address before: Beijing 100084 mailbox 82 cent box Tsinghua University Patent Office postcode: 100084 Applicant before: Tsinghua University |
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Effective date of registration: 20181206 Address after: 518116 No. 1 Workshop, Yongxin Industrial Plant, 89 Hengping Road, Yuanshan Street, Longgang District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Kanghong Environmental Protection Technology Co., Ltd. Address before: No. 40 Kanghong Industrial Park, No. 6 High-tech Road, Xi'an High-tech Industrial Development Zone, Xi'an City, Shanxi Province Patentee before: Xi'an Kanghong New Material Technology Co., Ltd. |
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Address after: 518116 No. 1 Workshop, Yongxin Industrial Plant, 89 Hengping Road, Yuanshan Street, Longgang District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Kanghong Intelligent Health Technology Co.,Ltd. Address before: 518116 No. 1 Workshop, Yongxin Industrial Plant, 89 Hengping Road, Yuanshan Street, Longgang District, Shenzhen City, Guangdong Province Patentee before: HEALTHLEAD Corp.,Ltd. |