CN201187374Y - Pressure balance system of carburetor oil groove - Google Patents
Pressure balance system of carburetor oil groove Download PDFInfo
- Publication number
- CN201187374Y CN201187374Y CNU2008201114692U CN200820111469U CN201187374Y CN 201187374 Y CN201187374 Y CN 201187374Y CN U2008201114692 U CNU2008201114692 U CN U2008201114692U CN 200820111469 U CN200820111469 U CN 200820111469U CN 201187374 Y CN201187374 Y CN 201187374Y
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- Prior art keywords
- oil groove
- valve
- communicated
- air port
- carburetor
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Abstract
The utility model relates to a carburetor oil tank pressure balancing system and is characterized in that the carburetor oil tank pressure balancing system comprises a carburetor oil tank with an oil tank air port, and a control valve which comprises a valve chamber and an on-off controller. The valve chamber is provided with an oil tank access port and a valve air port. The oil tank access port communicates with the oil tank air port. The valve air port communicates with the external air. The on-off controller can selectively switch or cut the communication between the valve air port and the oil tank air port. The carburetor oil tank pressure balancing system has the advantages that the oil tank directly communicates with the external air under the control of the control valve, so that the total length of the pipeline is shortened and the pressure difference of the oil tank is effectively reduced down to the atmospheric pressure. Compared with the prior art, the carburetor oil tank pressure balancing system has the advantages of automatic control, easy operation, good ventilation effect, no unnecessary evaporation of the fuel and efficient recovery of the evaporated fuel.
Description
Technical field
The utility model relates to a kind of Carburetor oil groove pressure balancing system, refers to a kind of Carburetor oil groove pressure balancing system that is applicable to the vehicle carrier especially.
Background technique
Oil groove that the Carburetor of general locomotive is other or title keg float chamber (floating chamber) can be offered a through hole and be communicated to the atmosphere outside environment, its purpose is to make the pressure of pasta top in the oil groove to be maintained at about an atmospheric state, so just can prevent the generation of pressure reduction even vacuum.If exist pressure reduction or vacuum can cause fuel feeding to have some setbacks in the oil groove even can't fuel feeding.
Yet under aforesaid structural design, the phenomenon that oil mass reduces gradually takes place in regular meeting after vehicle is put without a period of time for a long time, and then makes vehicle be difficult to start or start the time elongated.This is because of the fuel oil in the oil groove is evaporated to the outside via through hole, and is especially even more serious in hot environment.And fuel evaporation also causes air pollution problems inherent to the outside.
In addition, locomotive generally all has the outfit charcoal canister at present, and the atmosphere entry of fuel tank is communicated to charcoal canister, and purpose is to utilize the carbon granules of charcoal canister to carry out the recovery of fuel oil, in order to avoid cause atmospheric pollution, and pass to atmosphere through charcoal canister.There are stricter airtight evaporation rules, its regulation oil groove also will utilize charcoal canister in the formulation of the overseas country of part to reclaim fuel oil and logical atmosphere.But when oil groove directly is communicated to charcoal canister,, causes oil groove still to have many pressure reduction and produce because the pipeline total path is long.
The model utility content
The purpose of this utility model provides a kind of Carburetor oil groove pressure balancing system, can guarantee that not only the fuel oil in the Carburetor oil groove can not wasted because of evaporation when vehicle shut down, and more can start to make when vehicle operation to be atmospheric function in the Carburetor oil groove.
Pressure balancing system comprises a Carburetor oil groove, reaches a control valve.The Carburetor oil groove includes an oil groove atmospheric air port, and control valve then includes a valve chamber, reaches an open and close controlling part.Above-mentioned valve chamber offers an oil groove connecting port, reaches a valve atmospheric air port, and wherein the oil groove connecting port is communicated in the oil groove atmospheric air port, and the valve atmospheric air port is communicated to an outside atmosphere.The open and close controlling part energy selecting type opening and closing of fault valve atmospheric air port of control valve and being communicated with of oil groove connecting port.
But communicating between the control valve that is communicated in atmosphere by above-mentioned selecting type and Carburetor oil groove, make and behind vehicle launch, to keep atmospheric pressure environment in the Carburetor oil groove, when shutting down, then seals by vehicle and being communicated with of atmosphere fuel oil thereby can avoid evaporating and reach effective preservation.
Above-mentioned control valve can be a negative pressure control valve, and it more includes a negative pressure chamber, and the open and close controlling part includes an elastic component, a diaphragm, reaches a covering plate.Elastic component for example is a spring.
Valve chamber in the control valve and negative pressure chamber see through diaphragm and separate, covering plate is connected in diaphragm and is arranged in valve chamber, elastic component is arranged in negative pressure chamber and often compresses diaphragm, and when negative pressure chamber produces negative pressure, diaphragm is being communicated with between open oil groove connecting port and valve atmospheric air port together with covering plate opposing elastic component.
Above-mentioned negative pressure chamber can offer a negative pressure mouth, and the negative pressure mouth is communicated in the intake manifold of engine.When engine did not turn round, covering plate was subjected to compressing of elastic component and seals being communicated with between oil groove connecting port and valve atmospheric air port; When engine running, the negative pressure that engine produces impel diaphragm together with covering plate opposing elastic component being communicated with between open oil groove connecting port and valve atmospheric air port.
See through the engine negative pressure and open the mode that the atmosphere of Carburetor oil groove is communicated with, make pressure balancing system in reaching the automation and more convenient that becomes on the aforementioned effect.
Above-mentioned control valve also can be a solenoid electric valve, be to be electrically connected on an electronic control unit, and by the triggering of electronic control unit being communicated with between opening and closing of fault oil groove connecting port and valve atmospheric air port.And pressure balancing system can more comprise an engine speed sensor, is to be electrically connected on electronic control unit.When engine speed arrives a desired speed, electronic control unit triggers the above-mentioned control valve of control and opens being communicated with between oil groove connecting port and valve atmospheric air port.
Utilizing electronic control mode is that judgement basis has above-mentioned automation characteristic and the convenience of utilizing engine negative pressure control mode too with the engine speed.
Pressure balancing system also can comprise a charcoal canister, and charcoal canister is communicated in outside atmosphere.The oil groove atmospheric air port of Carburetor oil groove sees through a three-way pipe and is connected with the oil groove connecting port of control valve, and three-way pipe is communicated in above-mentioned charcoal canister.By this, except having aforementioned effect, more advantages that reclaim evaporation of fuel.
The utility model has the advantages that oil groove is directly seen through control valve be communicated to atmosphere, its pipeline total path is quite short, so can effectively reduce the pressure reduction of oil groove, more approaches atmospheric pressure.Logical atmosphere design compared to known can realize automation control, makes operation more convenient; The utility model is taken into account good logical atmosphere effect and is avoided the meaningless evaporation of fuel oil; The advantage that also has more recovery evaporation of fuel.
Description of drawings
Fig. 1 is the floor map of the Carburetor oil groove pressure balancing system of the utility model first preferred embodiment.
Fig. 2 is the pipeline connection diagram of the Carburetor oil groove pressure balancing system of the utility model first preferred embodiment.
Fig. 3 a, Fig. 3 b are negative pressure control valve stereogram and the cross-sectional schematic of Fig. 2.
Fig. 4 is the pipeline connection diagram of the Carburetor oil groove pressure balancing system of the utility model second preferred embodiment.
Fig. 5 is the pipeline connection diagram of the Carburetor oil groove pressure balancing system of the utility model the 3rd preferred embodiment.
Fig. 6 is the electrical connection schematic representation of Fig. 5 electromagnetic valve.
The primary clustering symbol description
Carburetor oil groove 1 oil groove atmospheric air port 2
Fuel tank 3 control valves 10
Valve chamber 11 oil groove connecting ports 111
Valve atmospheric air port 112 oil groove communication channels 113
Opening 114 negative pressure chamber 12
Oil groove connecting port 151 valve atmospheric air ports 152
Atmosphere 20 intake manifold 21
Charcoal canister 22 sourceof negative pressures 23
Three- way pipe 24,25 electronic control units 26
Engine Speed Sensor 27
Embodiment
With reference to figure 1 and Fig. 2, it illustrates the floor map and the pipeline connection diagram thereof of the utility model first preferred embodiment respectively.Embodiment is applied to for example locomotive of a vehicle carrier that is equipped with Carburetor with Carburetor oil groove pressure balancing system.Carburetor oil groove pressure balancing system comprises a Carburetor oil groove 1, a control valve 10.Carburetor oil groove 1 offers an oil groove atmospheric air port 2 more than the standard liquid level position.
Again in the lump with reference to figure 3, Fig. 3 a is the used negative pressure control valve stereogram of embodiment in addition; Fig. 3 b is the cross-sectional schematic of negative pressure control valve.Control valve 10 includes a valve chamber 11, reaches an open and close controlling part 13.Valve chamber 11 offers a valve atmospheric air port 112 and inside and is provided with an oil groove communication channel 113 independently, wherein oil groove communication channel 113 1 end openings are in valve chamber 11, the other end forms an oil groove connecting port 111 and is communicated to oil groove atmospheric air port 2, therefore be equivalent to oil groove communication channel 113 with opening 114 as with the communications ports of valve chamber 11 internal environments.Valve atmospheric air port 112 is communicated to an outside atmosphere 20, makes valve chamber 11 be equivalent to be in barometric pressure.Open and close controlling part 13 energy selecting type opening and closing of fault valve atmospheric air ports 112 are communicated with oil groove connecting port 11.The used control valve 10 of present embodiment is a negative pressure control valve.
Certainly, above-mentioned negative pressure control valve can also be the design of following variation, and promptly the valve atmospheric air port is positioned at an end of an autonomous channel, and this autonomous channel the other end then is opened in the valve chamber.In the case, be equivalent to valve chamber 11 and be in the pressure environment identical with the Carburetor oil groove.This simple variation design can reach effect of the present utility model equally with aforesaid version.
Specifically, negative pressure control valve by a upper shell 101, and a lower shell body 102 forms, and form an inner space by upper shell and lower shell body, this inner space more defines a valve chamber 11 and a negative pressure chamber 12 through the separation of open and close controlling part 13.
Above-mentioned open and close controlling part 13 includes an elastic component 131, a diaphragm 132, reaches a covering plate 133, wherein covering plate 133 is connected in diaphragm 132 and is arranged in valve chamber 11, and elastic component 131 is arranged in negative pressure chamber 12 and often compresses diaphragm 132, makes the covering plate 133 that is connected on the diaphragm 132 often hide the connection that closes 113 pairs of valve chambers 11 of oil groove communication channel.Because the very thin thickness of diaphragm 132 installs covering plate 133 additional and allows diaphragm 132 drive, and can promote the covering integral intensity.
By above-mentioned connection configuration, when engine did not turn round, covering plate 133 was subjected to compressing of elastic component 131 and closes the opening 114 of the oil groove communication channel 113 that is positioned at valve chamber 11, is equivalent to oil groove connecting port 111 and is blocked sealing with being communicated with of 112 of valve atmospheric air ports.On the other hand, when engine running, the negative pressure chamber 12 that the negative pressure transmission that the intake manifold 21 of engine is produced is communicated with it, and then impel diaphragm 132 together with covering plate 133 opposing elastic components 131 the direction application of force towards upper shell 101, therefore covering plate 133 displacements, no longer cover opening 114, thereby being communicated with of open oil groove connecting port 111 and 112 of valve atmospheric air ports.
The selection of above-mentioned spring is considered and is, leaves opening 114 once starting car to make diaphragm 132 drive covering plates 133 greater than the effect of spring force by negative pressure, and then oil groove connecting port 111 is with valve atmospheric air port 112 be communicated with.
From the above, the normally closed setting and the automatic approach that Carburetor oil groove 1 is led to atmosphere 20 that utilize pressure balancing system of the present utility model will make vehicle see through open and close controlling part 13 when not turning round block, and have avoided the possibility of the meaningless evaporation of fuel oil.And after vehicle one starting, make Carburetor oil groove 1 be communicated in atmosphere 20 by the negative pressure of giving birth to thereupon, reach open to atmosphere purpose.
Fuel tank and Carburetor oil groove can be equipped with generally simultaneously in the vehicle.Fuel tank is a bigger oil vessel, based on the consideration of arrangement of components in the vehicle design, is the float chamber so usually an oil groove that closely connects Carburetor is set in addition outside fuel tank.Fuel tank enters Carburetor more indirectly with supplying fuel to Carburetor oil groove earlier, in order to the fuel feeding of Carburetor.In addition, charcoal canister widely is used in the fuel oil that reclaims evaporation, and is used to reclaim the evaporation of fuel of fuel tank mostly, its connection is configured to, the atmosphere connection port of fuel tank is communicated to charcoal canister, and charcoal canister is communicated in atmosphere in addition, reaches simultaneously by this and reclaims evaporation oil gas and open to atmosphere purpose.
With reference to figure 4, it illustrates the pipeline connection diagram of the Carburetor oil groove pressure balancing system of second preferred embodiment.Among second embodiment, vehicle more comprises a charcoal canister 22, reaches a fuel tank 3, and charcoal canister 22 is communicated in an atmosphere 20 and a sourceof negative pressure 23.The utility model Ying Yu is during to above-mentioned known framework, and it is as follows that its pipeline connects configuration.Negative pressure control valve 10 is communicated in intake manifold 21, atmosphere 20 equally respectively, reaches Carburetor oil groove 1, more specifically, negative pressure control valve 10 is to utilize three-way pipe 24 to be connected with the oil groove atmospheric air port 2 of Carburetor oil groove 1, and the 3rd port of three-way pipe 24 then is connected to another three-way pipe 25 again.Three-way pipe 25 all the other two ports then are connected to fuel tank 3 and charcoal canister 22 respectively.So not only keep being connected of fuel tank 3 and charcoal canister 22 in the original system, for Carburetor oil groove 1 then except seeing through control valve 10 and running makes it and atmosphere 20 is communicated with/seals automatically, more additional effect through charcoal canister 22 recovery evaporation of fuel with vehicle launch/stop.
With reference to figure 5 and Fig. 6, it is respectively the pipeline connection diagram of Carburetor oil groove pressure balancing system of the 3rd preferred embodiment and the electrical connection schematic representation of electromagnetic valve thereof.The present embodiment and second embodiment's pipeline configuration is roughly the same, only its difference be in, employed control valve is a solenoid electric valve 15, include an oil groove connecting port 151, reach a valve atmospheric air port 152, wherein oil groove connecting port 151 is communicated to oil groove atmospheric air port 2, and valve atmospheric air port 152 is communicated to atmosphere 20.
Solenoid electric valve 15 also is electrically connected on an electronic control unit 26, other has an engine speed sensor 27 that is used to detect engine speed also to be electrically connected on above-mentioned electronic control unit 26, utilizes electronic control unit 26 to trigger solenoid electric valves 15 and opens being communicated with of oil groove connecting ports 111 and valve atmospheric air port 152.
Solenoid electric valve 15 is in normally off, so when engine shut down, the normally off of solenoid electric valve 15 was blocked the connection of 2 pairs of atmosphere 20 of oil groove atmospheric air port.And when rotating speed behind the engine start arrived a desired speed, electronic control unit 26 promptly sent trigger signals control solenoid electric valve 15 and opens, and made oil groove atmospheric air port 2 be seen through solenoid electric valve 15 and was communicated with atmosphere 20.Therefore reach equally and prevent the normally logical atmosphere of Carburetor oil groove 1 after fuel evaporation, the vehicle entry into service when vehicle stops.
Claims (7)
1. Carburetor oil groove pressure balancing system is characterized in that comprising:
One Carburetor oil groove includes an oil groove atmospheric air port; And
One control valve, include a valve chamber, reach an open and close controlling part, this valve chamber offers an oil groove connecting port, reaches a valve atmospheric air port, this oil groove connecting port is communicated in this oil groove atmospheric air port, this valve atmospheric air port is communicated to an outside atmosphere, and this this valve atmospheric air port of open and close controlling part energy selecting type opening and closing of fault is communicated with this oil groove connecting port.
2. Carburetor oil groove pressure balancing system according to claim 1, it is characterized in that this control valve is a negative pressure control valve, it more includes a negative pressure chamber, and this open and close controlling part includes an elastic component, one diaphragm, an and covering plate, this valve chamber and this negative pressure chamber see through this diaphragm and separate, this covering plate is connected in this diaphragm and is arranged in this valve chamber, this elastic component is arranged in this negative pressure chamber and often compresses this diaphragm, when this negative pressure chamber produces a negative pressure, this diaphragm is resisted this elastic component together with this covering plate and being communicated with between open this oil groove connecting port and this valve atmospheric air port.
3. Carburetor oil groove pressure balancing system according to claim 2, it is characterized in that this negative pressure chamber offers a negative pressure mouth, this negative pressure mouth is communicated in the intake manifold of an engine, when this engine does not turn round, this covering plate is subjected to compressing of this elastic component and seals being communicated with between this oil groove connecting port and this valve atmospheric air port, when this engine running, this negative pressure that this engine produces impels this diaphragm to resist this elastic component together with this covering plate and being communicated with between open this oil groove connecting port and this valve atmospheric air port.
4. Carburetor oil groove pressure balancing system according to claim 2 is characterized in that this elastic component is a spring.
5. Carburetor oil groove pressure balancing system according to claim 1, it is characterized in that this control valve is a solenoid electric valve, be to be electrically connected on an electronic control unit, being communicated with between this oil groove connecting port of opening and closing of fault and this valve atmospheric air port by the triggering of this electronic control unit.
6. Carburetor oil groove pressure balancing system according to claim 5, it is characterized in that also comprising an engine speed sensor, be electrically connected on this electronic control unit, when engine speed arrives a desired speed, this electronic control unit triggers this control valve of control and opens being communicated with between this oil groove connecting port and this valve atmospheric air port.
7. Carburetor oil groove pressure balancing system according to claim 1, it is characterized in that also comprising a charcoal canister, this charcoal canister is communicated in this outside atmosphere, and this oil groove atmospheric air port of this Carburetor oil groove sees through a three-way pipe and is connected with this oil groove connecting port, and this three-way pipe also is communicated in this charcoal canister.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201114692U CN201187374Y (en) | 2008-04-18 | 2008-04-18 | Pressure balance system of carburetor oil groove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201114692U CN201187374Y (en) | 2008-04-18 | 2008-04-18 | Pressure balance system of carburetor oil groove |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201187374Y true CN201187374Y (en) | 2009-01-28 |
Family
ID=40310395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201114692U Expired - Fee Related CN201187374Y (en) | 2008-04-18 | 2008-04-18 | Pressure balance system of carburetor oil groove |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201187374Y (en) |
-
2008
- 2008-04-18 CN CNU2008201114692U patent/CN201187374Y/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: 20090128 Termination date: 20130418 |