CN1074508A - Controller for fuel steam exhaust of minicar - Google Patents
Controller for fuel steam exhaust of minicar Download PDFInfo
- Publication number
- CN1074508A CN1074508A CN 92100256 CN92100256A CN1074508A CN 1074508 A CN1074508 A CN 1074508A CN 92100256 CN92100256 CN 92100256 CN 92100256 A CN92100256 A CN 92100256A CN 1074508 A CN1074508 A CN 1074508A
- Authority
- CN
- China
- Prior art keywords
- valve
- connects
- mouth
- carburetor
- fuel
- 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
- Supplying Secondary Fuel Or The Like To Fuel, Air Or Fuel-Air Mixtures (AREA)
Abstract
A kind of minicar fuel evaporative emission control device as automobile carburetor steam petcock, is connected the carburetor air mouth respectively, the balance mouth of pipe of float chamber and charcoal jar with two-position three-way valve; The backing plate of Carburetor bottom has the mouth that connects of the steam of releasing, and connects the escape valve outlet of a band mitre velve, and the escape valve import connects the charcoal jar; On distributor vacuum advance pressure-taking hole, connect one three vacuum chamber that connects the logical two-position three-way valve of mouth; Pacify a fuel check valve, its import connected tank, outlet connects the charcoal jar.This device need not change former carburetor structure and can be directly installed on the automobile, has reduced the fuel steam discharge amount effectively.
Description
The present invention is the control gear that is applied in the fuel evaporation effulent on the minicar.
Introduced external vehicle fuel oil evaporation Emission Control Device commonly used in " control of automobile noxious emission " book and formed, seen accompanying drawing 4 by seven parts such as leakproof fuel cell 5, pressure-vacuum oil case lid 8, steam-fuel separator 27, Carburetor 1, charcoal jar 6, Carburetor steam petcock 28 and escape valves 7.Wherein Carburetor steam petcock has four kinds of structures, i.e. the flapper valve that is 1. promoted by vapor pressure; 2. by the valve of closure connecting rod control; 3. solenoid valve is 4. by the steam petcock of vacuum signal control.The 4th kind of steam petcock by vacuum signal control be by diaphragm 13, valve gap 29, and vacuum signal 30, from the steam inlet 31 of float chamber, valve rod 33, valve 32 is formed, and valve rod one end is fixed on the diaphragm, and the other end is fixed with valve, and spring 34 is housed in the valve pocket.See accompanying drawing 5.
In four kinds of schemes of above-mentioned Carburetor steam petcock,, all need when Carburetor designs, to take into account, concerning Manufactured Carburetor, can't carry out by the flapper valve of vapor pressure lifting, by the valve of closure connecting rod control; The steam petcock of solenoid valve and vacuum signal control, be provided with separately though can leave Carburetor, but this two valve only plays simple on-off action, can't when engine operation, link up float chamber and carburetor air mouth, play the pressure balance effect, the Carburetor fuel feeding is thickened, influence the proper functioning of motor.The existing Carburetor of China does not all have the special use outlet that the charcoal jar communicates, and fuel evaporative emission control device is installed, and all needs to reequip Carburetor.Above-mentioned escape valve, vacuum film cell structure are complicated.
The present invention seeks to overcome the shortcoming of said apparatus, provide a kind of new structure to directly apply to the fuel evaporative emission control device of minicar
The object of the present invention is achieved like this: fuel evaporative emission control device connects mouth by Carburetor, three, two-position three-way valve, and fuel check valve, leakproof fuel cell, charcoal jar and pressure-vacuum oil case lid, Carburetor backing plate eight parts are formed.Specialized designs of the present invention two-position three-way valve by vacuum signal control, as Carburetor steam petcock.This valve is made up of bellows, upper and lower valve body, valve rod four parts.Diaphragm and spring are housed in the bellows, and diaphragm is fixedlyed connected with valve rod, and valve block is housed on the valve rod, and valve block is between two valve bodies up and down, and there is annular boss at the position that valve block contacts with valve body up and down, and boss is valve.Bellows combines as a whole with valve body up and down, and the mouth that connects of a logical charcoal jar is arranged on the upper valve body, and the mouth that connects that connects a mouth and a logical Carburetor suction port of a logical float chamber balance mouth of pipe is arranged on the following valve body.The fuel check valve import connects leakproof fuel cell, and outlet connects the charcoal jar.The vacuum signal that two-position three-way valve is required draws original distributor vacuum advance pressure-taking hole on Carburetor, like this, has avoided the additional processing of Carburetor and inlet manifold, only needs connect one three and connect mouth and get final product on former pressure-taking hole.For solving the problem that does not have charcoal jar steam relief outlet on the Carburetor, the invention provides the heat insulation backing plate of Carburetor of being with the steam of releasing to connect mouth, only need change former backing plate and get final product.
When engine operation, connect the vacuum chamber that mouth imports two-position three-way valve into through three from the vacuum signal of distributor vacuum advance pressure-taking hole on the Carburetor.In the bellows of two-position three-way valve vacuum signal is arranged, under the effect of vacuum power, diaphragm overcomes spring force drive valve rod and moves up, valve block on the valve rod turn-offs goes up valve, open lower valve, float chamber is communicated with the mouth that connects of logical Carburetor suction port, play the pressure balance effect, turn-off the path that removes the charcoal jar simultaneously, make Carburetor energy proper functioning.When motor is not worked, fuel-steam in the float chamber enters two-position three-way valve through the top balance mouth of pipe along pipeline, the interior no vacuum signal of bellows this moment, under the spring force effect, diaphragm drives valve rod and moves down, and the valve block on the valve rod turn-offs lower valve, turn-offed the path that goes the Carburetor import, open valve simultaneously, float chamber is communicated with the charcoal jar, the fuel-steam in the carburetor bowl is imported the charcoal jar absorb by active carbon.
The valve body that has expandable plastic to make in the fuel check valve.When not having fuel oil, this valve body and valve seat have big gap, make oil tank fuel steam enter the charcoal jar by this valve smoothly, and when fuel tank overflowed fuel oil, valve body floated, and stopped up valve port, made fuel oil can not flow into the charcoal jar.It is felted membrane that the charcoal jar is gone to the bottom, and the centre is full of activated carbon grain, and three ozzles are arranged at the top, a logical fuel tank, the float chamber through the logical Carburetor of two-position three-way valve, a logical engine suction manifold.When motor quits work, fuel-steam in carburetor bowl and the fuel tank enters the charcoal jar, when engine operation, under the effect of inlet manifold degree of vacuum, air is from charcoal pot bottom process felted membrane, blow over active carbon, become oily vapour mixed gas, in inlet manifold sucks cylinder, burn together being cleaned out by the fuel-steam of active carbon adsorption.
Motor is when idling mode, and inlet manifold degree of vacuum is very high, sucks too much mixed gas from the charcoal jar and can make unstable idle.For this reason, can be at the charcoal jar to adorning a variable bleeder valve between the inlet manifold, this valve has removed complicated aneroid capsule structure.Adorn a mitre velve in the valve chest, spring is housed on the mitre velve.The steam of releasing of this valve outlet port connection pad plate connects mouth, and import connects the charcoal jar.The aperture of variable bleeder valve increases with degree of vacuum and reduces, degree of vacuum is big, attracting mitre velve to overcome spring force moves, flow area reduces, the steam flow of only being permitted to pass through reduces, so just can be controlled at idling mode in the proper range from the air-fuel mixture amount that the charcoal jar sucks, to guarantee the normal operation of engine idle state.Simultaneously,, also can increase excretion gradually, be beneficial to " cleaning " of charcoal jar in other working state.
The fuel evaporative emission control device of this structure need not change this engine and carburetor structure just can directly be installed and used, and helps reducing cost, simple in structure, easy to utilize.Its great advantage is, can effectively reduce fuel-steam to big vapour discharge amount, reaches international control criterion after tested.
Description of drawings:
Fig. 1 structure principle chart of the present invention
Fig. 2 two-position three-way valve structural representation
Fig. 3 escape valve structural representation
Fig. 4 correlation technique structure principle chart
Fig. 5 is by the steam petcock structural representation of vacuum signal control.
1 carburetor 2 three connects mouth 3 two-position three-way valves 4 fuel check valve 5 leakproof fuel cells 6 charcoal tanks 7 discharge valves 8 pressure-vacuum oil case lid 9 backing plates 10 balance pipes 11 logical float chambers and connects on mouth 12 upper valve bodies 13 diaphragms 14 bellows 15 springs 16 valve rods 17 valve 18 logical charcoal tanks and connect 21 times valve bodies of mouth 19 valve blocks, 20 lower valves, 22 logical carburetor air inlets and connect mouth 23 housings 24 springs 25 cone valves 26 outlet 27 steam-fuel separator 28 carburetor steam bleed valves 29 valve gaps 30 vacuum signals 31 from steam inlet 32 valves 33 valve rods 34 springs of float chamber
The present invention is provided by following examples:
The structure of fuel evaporative emission control device includes Carburetor 1, three and connects mouth 2, two-position three-way valve 3, fuel check valve 4, leakproof fuel cell 5, charcoal jar 6, escape valve 7, pressure-vacuum oil case lid 8, backing plate 9.
Claims (2)
1, a kind of controller for fuel steam exhaust of minicar that includes Carburetor 1, fuel check valve 4, leakproof fuel cell 5, charcoal jar 6, pressure one vacuum oil case lid 8, the import connected tank of fuel check valve, outlet connects the charcoal jar, it is characterized in that also having two-position three-way valve 3, backing plate 9;
The balance mouth of pipe 10 of carburetor bowl connects two-position three-way valve and connects mouth 11, and the charcoal jar connects two-position three-way valve and connects mouth 18, and the carburetor air mouth connects two-position three-way valve and connects mouth 22; Three connect mouth connects distributor vacuum advance pressure-taking hole, the vacuum chamber of two-position three-way valve and distributor respectively; Backing plate 9 sides of the Carburetor bottom steam of releasing connects mouth, and the mouth that connects of backing plate connects the charcoal jar;
Spring 15 and diaphragm 13 are housed in the bellows 14 of two-position three-way valve, diaphragm is fixedlyed connected with valve rod 16, valve block 19 is housed on the valve rod, bellows combines as a whole with valve body 12,21 up and down, valve block is up and down between the valve body, valve block and valve body contact segment are processed with annular boss, and boss is lower valve 17,20.
2, according to the described fuel evaporative emission control device of claim 1, it is characterized in that also having an escape valve 7, mitre velve 25 is housed in the escape valve housing 23, spring 24 is housed on the mitre velve; The steam of releasing of backing plate 9 connects mouth and connects escape valve outlet 26, and the escape valve import connects charcoal jar 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92100256 CN1074508A (en) | 1992-01-14 | 1992-01-14 | Controller for fuel steam exhaust of minicar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92100256 CN1074508A (en) | 1992-01-14 | 1992-01-14 | Controller for fuel steam exhaust of minicar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1074508A true CN1074508A (en) | 1993-07-21 |
Family
ID=4938465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92100256 Pending CN1074508A (en) | 1992-01-14 | 1992-01-14 | Controller for fuel steam exhaust of minicar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1074508A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101839198A (en) * | 2010-05-25 | 2010-09-22 | 重庆隆鑫机车有限公司 | Three-way joint of fuel evaporation and emission control pipeline |
| CN102032078A (en) * | 2010-12-16 | 2011-04-27 | 力帆实业(集团)股份有限公司 | Internal fuel steam collector with floating fuel tank |
| CN102032077A (en) * | 2010-12-16 | 2011-04-27 | 力帆实业(集团)股份有限公司 | Built-in fuel steam acquisition device for fuel tank |
| CN102230431A (en) * | 2011-06-14 | 2011-11-02 | 重庆隆鑫机车有限公司 | Fuel oil evaporation system and motorcycle thereof |
| CN112525522A (en) * | 2020-11-27 | 2021-03-19 | 厦门烟草工业有限责任公司 | Steam discharge detection device of condensation water pipe network |
-
1992
- 1992-01-14 CN CN 92100256 patent/CN1074508A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101839198A (en) * | 2010-05-25 | 2010-09-22 | 重庆隆鑫机车有限公司 | Three-way joint of fuel evaporation and emission control pipeline |
| CN101839198B (en) * | 2010-05-25 | 2012-03-28 | 重庆隆鑫机车有限公司 | Three-way joint of fuel evaporation and emission control pipeline |
| CN102032078A (en) * | 2010-12-16 | 2011-04-27 | 力帆实业(集团)股份有限公司 | Internal fuel steam collector with floating fuel tank |
| CN102032077A (en) * | 2010-12-16 | 2011-04-27 | 力帆实业(集团)股份有限公司 | Built-in fuel steam acquisition device for fuel tank |
| CN102032078B (en) * | 2010-12-16 | 2012-07-04 | 力帆实业(集团)股份有限公司 | Internal fuel steam collector with floating fuel tank |
| CN102230431A (en) * | 2011-06-14 | 2011-11-02 | 重庆隆鑫机车有限公司 | Fuel oil evaporation system and motorcycle thereof |
| CN112525522A (en) * | 2020-11-27 | 2021-03-19 | 厦门烟草工业有限责任公司 | Steam discharge detection device of condensation water pipe network |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101240760A (en) | Carbon pot and fuel vapor treatment system containing the same | |
| CN1512052A (en) | Device for air tightness diagnosis to fuel tank with steam exhaust and purifying system | |
| US4059081A (en) | EVAP system-provided throttle valve control unit | |
| JPH0734985A (en) | Evaporative fuel absorbing device for small general purpose engine | |
| CN1074508A (en) | Controller for fuel steam exhaust of minicar | |
| CN2118824U (en) | Control device for micro car fuel combustion evaporating exhaust | |
| CN2866869Y (en) | Diaphragm secondary additional air supply valve for gasoline engine | |
| JPS56113039A (en) | Evaporative fuel collector | |
| JPH0359012U (en) | ||
| CN2233014Y (en) | Removal control valve | |
| CN214741732U (en) | Improved oil inlet system | |
| US4106452A (en) | Exhaust gas recirculator | |
| JPS6126609Y2 (en) | ||
| CN2816378Y (en) | Secondary gas-intaking device for tail-gas purifying of motorcycle | |
| CN2200701Y (en) | Control device for fuel evaporation excreta of gasoline vehicle | |
| CN219154203U (en) | A filtration system and car for car | |
| CN2237729Y (en) | Gasoline evaporation controller for automobile | |
| JPS603959Y2 (en) | Engine evaporative fuel treatment device | |
| JPS6016775Y2 (en) | mechanical fuel pump | |
| JPS5813101Y2 (en) | Canister of fuel evaporation prevention device | |
| JPH0355803Y2 (en) | ||
| RU2035611C1 (en) | Filter for fuel system of internal combustion engine | |
| CN100422517C (en) | Compound air pump | |
| JPS6032372Y2 (en) | Pressure regulating valve for fuel tank for internal combustion engine | |
| JPS637268U (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |