CN205135861U - Air -fuel mixture device is supplied with to engine fuel - Google Patents
Air -fuel mixture device is supplied with to engine fuel Download PDFInfo
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- CN205135861U CN205135861U CN201520905576.2U CN201520905576U CN205135861U CN 205135861 U CN205135861 U CN 205135861U CN 201520905576 U CN201520905576 U CN 201520905576U CN 205135861 U CN205135861 U CN 205135861U
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Abstract
The utility model discloses an air -fuel mixture device is supplied with to engine fuel, include: the fuel branch road, it is used for providing the fuel, the air branch road, it is used for providing the air, fuel pump, its entrance point respectively with fuel branch road and air branch road are connected, arrive fuel and air suction pressurize in the fuel pump and with fuel and air, just the air was saturated in the fuel during messenger's air was dissolved in the fuel totally, the fuel sprayer, its with the exit end of fuel pump is connected, makes saturation of the air fuel follow during the fuel sprayer spouted the engine combustion chamber, the pressure rapid drawdown in the combustion chamber of saturation of the air fuel made the air overflow from the fuel, atomizes the fuel rapidly. The utility model has the advantages of simple structure, it is safe high -efficient, low cost, simple process, petrol atomization effect is good, and the required pressure of fuel injection system is little.
Description
Technical field
The utility model relates to motor car engine fuel delivery technical field, particularly a kind of engine fuel supply oil gas mixing unit.
Background technique
More combustion in IC engine fuel oil acting now, adopt fuel-oil atmozation, form inflammable mixture carry out work by combustion, to improve burning quality in cylinder with air.And by fuel-oil atmozation process, be utilize the high-pressure injection of oil nozzle nozzle opening to form turbulent flow by fuel-oil atmozation mostly.
The critical temperature of air is-140.7 DEG C, and on critical temperature, no matter how pressure increases, and air is still gaseous state, can not liquefy.The main component nitrogen of air and oxygen are all nonpolar molecules, and gasoline is polar molecule, and under normal pressure, in gasoline, the solubility of air is not high.Gasoline is large molecule relative to air, but the gap of petrol molecule is larger, air is easily filled gap and is dissolved, because gasoline is polar molecule, air nitrogen and oxygen molecule also can be combined by the interaction force between molecule and dissolve, therefore along with the increase of pressure is particularly under high pressure, air solubility in the oil can increase.
Principle is said, in gas-liquid system, in gas solubilized liquid flux, the gas after dissolving is also overflowed simultaneously; And solvent also has effusion to get back to the two-way process of solvent for solvent vapour and solvent vapour liquefy simultaneously.After these processes reach transient equiliblium, the solution that liquid phase is gas and is formed with liquid flux, and gas phase is the mixture of gas and solvent vapour.For this system, gas solubility is in a liquid directly proportional to the equilibrium partial pressure of gas, has nothing to do with the character of solvent, i.e. Henry law.In Practical Project, although the fuel such as gasoline are nonideal solutions, after pressure is very high, also not too Henry law can be met, but according to existing test result, the gases such as methane, nitrogen oxygen are in this kind of mixed solvent of diesel oil and gasoline, and at below 10MPa, the solubility of gas roughly meets linear relationship.Under 10MPa pressure, gas solubility in a liquid exceeds about hundred times than under a barometric pressure, and often liter of fuel can dissolve the gas times over own vol.
A larger increase of air dissolves degree makes vapour oil viscosity change on the one hand, on the other hand after oil droplet ejection, due to the sharply reduction of pressure, the tens times of air to hundreds of times dissolved can be overflowed more from gasoline drop, and the intermolecular confusion collision of air effusion contributes to atomization.Therefore be necessary to design a kind of succinct fuel oil supply system, improve the atomizing effect of gasoline, high pressure power consumption required during reduction gasoline atomizing.
Model utility content
The utility model has designed and developed a kind of engine fuel supply oil gas mixing unit, overcome the defect that prior art intermediate fuel oil atomizing effect difference combustion efficiency is low, air is mixed with fuel oil and pressurizes and forms saturation of the air solution, being reduced by saturated solution pressure makes air overflow thus increase intermolecular collision again, substantially increases fuel atomization effect.
The technological scheme that the utility model provides is:
A kind of engine fuel supply oil gas mixing unit, comprising:
Fuel oil branch road, it is for providing fuel oil;
Air passage, it is for providing air;
Fuel pump, its entrance point is connected with described fuel oil branch road and air passage respectively, liquid fuel and air will be pressurizeed in liquid fuel and air intake to described fuel pump, air is dissolved in liquid fuel completely and air is saturated in liquid fuel;
Oil nozzle, it is connected with the outlet end of described fuel pump, saturation of the air fuel oil is made to be injected to engine chamber from described oil nozzle, the pressure of saturation of the air fuel oil is reduced to the pressure in firing chamber, thus the air in saturation of the air fuel oil is overflowed from liquid fuel, by liquid fuel rapid atomization.
Preferably, described fuel oil branch road comprises:
Fuel tank, it is for storing fuel oil;
Fuel filter, it is for the impurity in filter fuel.
Preferably, described air passage comprises:
Air-strainer, it is for the impurity in filtered air;
One-way valve, it is for controlling air flow in one direction and described one-way valve can change aperture to control air mass flow.
Preferably, described air passage also comprises controller, and described controller is connected with described one-way valve the aperture controlling described one-way valve.
The beneficial effects of the utility model are: the utility model provides a kind of engine fuel supply oil gas mixing unit and utilizes air under high pressure to carry the principle that in gasoline, solubility can increase, after oil droplet sprays in oil nozzle, the sharply reduction of pressure can make air overflow from gasoline drop, the intermolecular confusion collision of air effusion contributes to vapour oil atomization, improves the atomizing effect of gasoline.It is simple that this device has structure, safe and efficient, with low cost, and technique is simple, and gasoline atomizing is effective, the advantage that pressure needed for fuel injection system is little.Existing oil spout technology atomizing effect is solved not high, the shortcomings such as required pressure is large with this.
Accompanying drawing explanation
Fig. 1 is engine fuel described in the utility model supply oil gas mixing unit general structure schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail, can implements according to this with reference to specification word to make those skilled in the art.
As shown in Figure 1, the utility model provides a kind of engine fuel supply oil gas mixing unit, comprises fuel tank 1001, fuel filter 1002, fuel pump 1003, oil nozzle 1004, one-way valve 1005, air-strainer 1006 and controller 1007.
Fuel tank 1001 for storing fuel oil, and provides required fuel to motor.Fuel tank 1001 exports and directly connects fuel filter 1002, makes to flow through by impurity filterings such as the moisture fuel oil after fuel filter 1002 from the fuel oil of fuel tank 1001 outflow, the combustion efficiency of guarantee fuel oil.The outlet end of fuel filter 1002 connects fuel pump 1003.Fuel oil can be extracted out by described fuel pump 1003 from fuel tank 1001, and can pressurize to fuel oil.Fuel tank 1001, fuel filter 1002, fuel pump 1003 and the pipeline connected between them constitute fuel oil branch road.Between fuel filter 1002 and fuel pump 1003, be provided with air passage, described air passage comprises one-way valve 1005 and air-strainer 1006, and the entrance point of one-way valve 1005 connects air-strainer 1006, and outlet end connects the entrance point of fuel pump 1003.Air-strainer 1006 for filtered air, by the moisture in air and large granular impurity filtering.1005, one-way valve allows that air is unidirectional flow in fuel pump 1003, stops the reverse flow of air and stops fuel oil to flow out through one-way valve.Described one-way valve 1005 can also play the effect controlling air mass flow simultaneously, namely makes air passage provide the air of different flow by the difference of one-way valve 1005 aperture.One-way valve 1005 is electrically connected with controller 1007, is controlled the aperture of one-way valve 1005 by controller 1007.When fuel pump 1003 works, fuel oil is drawn in fuel pump 1003 from fuel tank 1001, air is drawn in fuel pump 1003 in the lump through air passage simultaneously, and fuel oil was pressurizeed with mixing of air, reach certain pressure, air can be dissolved completely in fuel oil.Controller 1007 is amount of fuel needed for the different operating mode of automobile running, and the meltage under certain pressure intensity during saturated in fuel oil of air controls the aperture of one-way valve 1005, to ensure that air can reach capacity state in the oil all the time, there will not be the air phenomenon that solubility is not enough or excessive in the oil.
The outlet end of fuel pump 1003 connects oil nozzle 1004.Because the main component nitrogen of air and oxygen are all nonpolar molecules, gasoline is polar molecule, and under normal pressure, in gasoline, the solubility of air is not high.Therefore air separated before entering into fuel pump 1003 separately with fuel oil.After air and fuel oil enter into fuel pump 1003, pressurizeed by fuel pump 1003, send in oil nozzle 1004.Because gasoline is large molecule relative to air, under high pressure, the gap between petrol molecule is easily filled up and the saturated solution of saturated formation air by air clearance, and namely air is solute, and gasoline is solution.Saturated solution is sent to oil nozzle 1004 through fuel pipe.When oil nozzle 1004 inner valve body is opened, the mixed solution of air and fuel oil under high pressure sprays.Because fluid is ejected in firing chamber, form the drop of several micron to hundreds of micron size, pressure reduces rapidly, temperature raises, gas can be separated out, and during precipitation, the random motion of air molecule can aggravate intermolecular collision, makes the gasification rate of drop can improve several times to tens times; This process, also can regard that high-pressure system is to gas liquid mixture workmanship merit W as.After having done work, the energy of acting is reached by absorption or close in saturation solubility liquid, forming the interior of liquid can be gibbs free energy G=U-TS+pV=H-TS, and wherein U is the interior energy of system, and T is temperature, and S is entropy, and p is pressure, and V is volume, and H is enthalpy.Therefore in a combustion chamber, the interior speed of evaporating that can make in liquid increases considerably, and namely when fuel oil sprays from oil nozzle 1004, by rapid atomization, can significantly promote the atomizing effect of fuel oil with this.
Engine fuel supply oil gas mixing unit described in the utility model, make use of the principle that the solubility of air in fuel oil can increase along with the increase of pressure, air and fuel oil are carried out mixing and pressurizeing, air is made to be dissolved in fuel oil the saturated solution forming air completely, then lily solution is made to spray from oil nozzle, when making pressure drop, air is overflowed from fuel oil, utilize intermolecular collision when overflowing, improve fuel atomization effect, high pressure power consumption required during reduction fuel-oil atmozation, to improve oil inflame quality.
Although embodiment of the present utility model is open as above, but it is not restricted to listed in specification and mode of execution utilization, it can be applied to various applicable field of the present utility model completely, for those skilled in the art, can easily realize other amendment, therefore do not deviating under the universal that claim and equivalency range limit, the utility model is not limited to specific details and illustrates here and the legend described.
Claims (4)
1. an engine fuel supply oil gas mixing unit, is characterized in that, comprising:
Fuel oil branch road, it is for providing fuel oil;
Air passage, it is for providing air;
Fuel pump, its entrance point is connected with described fuel oil branch road and air passage respectively, liquid fuel and air will be pressurizeed in liquid fuel and air intake to described fuel pump, air is dissolved in liquid fuel completely and air is saturated in liquid fuel;
Oil nozzle, it is connected with the outlet end of described fuel pump, saturation of the air fuel oil is made to be injected to engine chamber from described oil nozzle, the pressure of saturation of the air fuel oil is reduced to the pressure in firing chamber, thus the air in saturation of the air fuel oil is overflowed from liquid fuel, by liquid fuel rapid atomization.
2. engine fuel supply oil gas mixing unit according to claim 1, it is characterized in that, described fuel oil branch road comprises:
Fuel tank, it is for storing fuel oil;
Fuel filter, it is for the impurity in filter fuel.
3. engine fuel supply oil gas mixing unit according to claim 1, it is characterized in that, described air passage comprises:
Air-strainer, it is for the impurity in filtered air;
One-way valve, it is for controlling air flow in one direction and described one-way valve can change aperture to control air mass flow.
4. engine fuel supply oil gas mixing unit according to claim 3, it is characterized in that, described air passage also comprises controller, and described controller is connected with described one-way valve the aperture controlling described one-way valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520905576.2U CN205135861U (en) | 2015-11-13 | 2015-11-13 | Air -fuel mixture device is supplied with to engine fuel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520905576.2U CN205135861U (en) | 2015-11-13 | 2015-11-13 | Air -fuel mixture device is supplied with to engine fuel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205135861U true CN205135861U (en) | 2016-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520905576.2U Expired - Fee Related CN205135861U (en) | 2015-11-13 | 2015-11-13 | Air -fuel mixture device is supplied with to engine fuel |
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| CN (1) | CN205135861U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257442A (en) * | 2015-11-13 | 2016-01-20 | 吉林大学 | Engine fuel supply air-fuel mixing device and fuel atomization method |
| CN110206629A (en) * | 2019-04-25 | 2019-09-06 | 清华大学 | Active precombustion-chamber ignition system and combustion system for hybrid power engine |
-
2015
- 2015-11-13 CN CN201520905576.2U patent/CN205135861U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257442A (en) * | 2015-11-13 | 2016-01-20 | 吉林大学 | Engine fuel supply air-fuel mixing device and fuel atomization method |
| CN110206629A (en) * | 2019-04-25 | 2019-09-06 | 清华大学 | Active precombustion-chamber ignition system and combustion system for hybrid power engine |
| CN110206629B (en) * | 2019-04-25 | 2020-07-14 | 清华大学 | Active pre-combustion chamber ignition system for hybrid power engine and combustion system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160406 Termination date: 20181113 |