A fuel tank capable of circulating and mixing fuel and water for supply
By setting up a suspended float cylinder and a return liquid tube in the fuel tank, the automatic mixing and circulating supply of fuel and water is achieved, and the problems of high cost and short shelf life of emulsifiers in the prior art are solved, and efficient fuel water-doping technology is achieved.
Patent Information
- Application Number
- CN202510128168.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-27
- Publication Date
- 2025-04-04
AI Technical Summary
The existing fuel water-doping technology requires the configuration of emulsifiers, which has high cost and short shelf life. In-line emulsified oil needs to be added to a control system, which increases the development cost.
Design a fuel tank, by setting up a suspended float cylinder, the oil suction port of the oil pump is located below the oil-water separation line, ensuring that the engine can absorb fuel and water at the same time when starting. After starting, the mixture is sprayed into the oil tank through the return liquid tube to form turbulence, and the mixture is continuously stirred and mixed to form a cyclic supply.
It realizes automatic mixing of fuel and water when the engine starts, and continuously supplying the mixture of fuel and water during engine operation, solving the problems of high cost and short shelf life of emulsifiers in the prior art.
Smart Images
Figure CN119749222A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of fuel tanks, and in particular to a tank capable of circulating and mixing fuel and water for supply. Background Art
[0002] Global oil resources are becoming increasingly scarce, while automobile consumption is rising. Before finding the ultimate alternative energy source, automobile manufacturers, energy companies and governments around the world are exploring an intermediate route to delay the outbreak of the oil crisis. At the beginning of the 20th century, Cambridge University in the UK proposed the use of fuel water seepage technology in engines. In 1981, the first meeting of the International Combustion Association proposed fuel water mixing as one of the three major energy-saving and environmental protection technical measures. Water-mixed combustion can form a micro-explosion effect, and the micro-explosion reaction can improve the atomization effect of oil droplets, promote oil-gas mixing, and improve combustion efficiency. Therefore, the combustion technology of fuel water mixing has always been a research hotspot in recent years.
[0003] The current technology generally uses water-emulsified oil to extend the ignition delay period, and the evaporation of water can reduce the combustion temperature, thereby inhibiting the generation of NOx. However, this method requires the configuration of emulsifiers, which are expensive, and the static emulsified oil has a short shelf life. Long-term storage will cause water and oil stratification; online emulsified oil requires the addition of a control system, which increases development costs.
[0004] Therefore, designing a fuel tank that can automatically mix water and fuel after the engine is started is the key to solving the above problems. Summary of the invention
[0005] The present invention provides a fuel tank that can circulate and mix fuel and water, which has the effect of first absorbing the stratified fuel and water when the engine is started, and then continuously supplying the mixture of fuel and water to the engine after the engine is started. The specific technical solution is as follows:
[0006] A fuel tank capable of circulating and mixing fuel and water for supply comprises a fuel tank body, the fuel tank body can contain fuel and water, an fuel pump is arranged in the fuel tank body, a float is arranged below the fuel pump, the fuel pump is fixedly connected to the float, the float can carry the fuel pump to float up and down in the fuel tank body, an oil suction filter is horizontally arranged at the oil inlet of the fuel pump, an oil delivery pipe is connected above the fuel pump, the oil delivery pipe is connected to the oil rail of the engine, the oil rail is connected to the inlet of the fuel injection nozzle of the engine, the inlet of the fuel injection nozzle is also connected to the return liquid pipe, and the return liquid pipe is connected to the inside of the fuel tank body; before the engine is started, the fuel and water in the fuel tank body are in a stratified state, and the float can make the bottom of the oil suction filter be located below the oil-water delineation line.
[0007] Furthermore, a guide rail is fixedly arranged vertically in the oil tank, and the guide rail is slidably connected to the buoy. Under the buoyancy of water, the buoy can slide up and down relative to the guide rail.
[0008] Furthermore, there are two guide rails which are symmetrically plugged into the buoy to improve the stability of the buoy when it moves.
[0009] Furthermore, the buoy is cylindrical so as to reduce the impact force on the buoy in the horizontal direction when the fuel and water are mixed.
[0010] Furthermore, a receiving groove is provided below the fuel tank body to allow the mixture of fuel and water to be fully burned.
[0011] Furthermore, a plurality of overflow slopes are formed below the fuel tank body toward the side wall of the fuel tank body with the opening of the receiving groove as the center, and the height of the overflow slopes close to the receiving groove is lower than the height close to the side wall of the fuel tank body, so that the mixture of fuel and water in the fuel tank body can flow to the position of the receiving groove.
[0012] Furthermore, a concave ridge is formed between two adjacent overflow guide slopes, and a plurality of concave ridges form a guide spiral toward the opening direction of the accommodating groove.
[0013] Furthermore, the end of the liquid return pipe in the oil tank body is inserted into the receiving groove.
[0014] Furthermore, a pressure relief valve is provided between the inlet of the fuel injection nozzle and the liquid return pipe.
[0015] Furthermore, an upper cover is detachably connected to the top of the oil tank body, and the oil delivery pipe, liquid return pipe and guide rail are all fixedly connected to the upper cover.
[0016] The oil tank of the present invention can circulate and mix fuel and water for supply, and has an ingenious structural design. By arranging a suspended float, the oil suction port of the oil pump can be located below the oil-water delineation line, thereby ensuring that no matter how much fuel and water are left in the oil tank, the engine can absorb fuel and water at the same time when it is started; in addition, after the engine is started, a large amount of the mixture of fuel and water is sprayed into the oil tank body through the return pipe to form turbulence, so as to stir and mix the fuel and water in the oil tank body, so that the oil pump can continuously absorb the mixture of fuel and water and a small amount of the mixture is consumed by the fuel injection nozzle, and the remaining large amount of the mixture is rapidly returned to the oil tank body through the return pipe to continue to stir and mix the fuel and water in the oil tank body, thereby forming a circulating supply.
[0017] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:
[0019] Figure 1 It is a sectional perspective view of a fuel tank capable of circulating and mixing fuel and water for supply according to the present invention;
[0020] Figure 2 is a cutaway perspective view of the fuel tank body of the present invention;
[0021] Figure 3 It is a schematic diagram of the connection between the oil delivery pipe, liquid return pipe, guide rail, etc. and the upper cover of the present invention. DETAILED DESCRIPTION
[0022] In order to better understand the purpose, function and specific design of the present invention, the following is a further detailed description of a fuel tank capable of circulating and mixing fuel and water according to the present invention in conjunction with the accompanying drawings.
[0023] like Figure 1-3 As shown, a fuel tank capable of circulating and mixing fuel and water for supply comprises a fuel tank body 1, the fuel tank body 1 can contain fuel and water, an oil pump 2 is arranged in the fuel tank body 1, a float 3 is arranged below the fuel pump 2, the fuel pump 2 is fixedly connected to the float 3, the float 3 can carry the fuel pump 2 to float up and down in the fuel tank body 1, an oil suction filter 4 is horizontally arranged at the oil inlet position of the fuel pump 2, an oil delivery pipe 5 is connected above the fuel pump 2, the oil delivery pipe 5 is connected to the oil rail 6 of the engine, the oil rail 6 is connected to the inlet of the engine's fuel injection nozzle 7, the inlet of the fuel injection nozzle 7 is also connected to the return pipe 8, and the return pipe 8 is connected to the inside of the fuel tank body 1; before the engine is started, the fuel and water in the fuel tank body 1 are in a stratified state due to density, the water phase is at the bottom, and the oil phase is at the top; the float 3 can make the bottom of the oil suction filter 4 be located 1-4mm below the oil-water delineation line.
[0024] When the engine is started, the oil pump 2 can simultaneously absorb the fuel and water near the oil-water offline line and transport them to the oil rail 6 through the oil delivery pipe 5, so as to reach the position of the fuel injector 7. The fuel injector 7 absorbs a small amount of fuel and water, and most of the remaining fuel and water are rapidly returned to the fuel tank body 1 through the return pipe 8. The pressure given by the oil pump 2 is used to form a strong injection force at the end of the return pipe 8, so as to form turbulence inside the fuel tank body 1 to stir and mix the fuel and water in the fuel tank body 1. At this time, the oil pump 2 can continuously absorb the mixture of fuel and water, a small amount of the mixture of fuel and water is used for the engine, and a large amount of the mixture of fuel and water is rapidly returned to the fuel tank body 1 through the return pipe 8 to stir and mix the fuel and water in the fuel tank body 1.
[0025] Specifically, a guide rail 9 is fixedly arranged vertically in the fuel tank, and the guide rail 9 is slidably connected to the buoy 3. Under the buoyancy of water, the buoy 3 can slide up and down relative to the guide rail 9. Preferably, in order to ensure the stability of the buoy 3, the guide rails 9 of this embodiment are two, symmetrically plugged on the buoy 3. It is worth noting that in order to reduce the impact force on the buoy 3 in the horizontal direction when the fuel and water are mixed, the buoy 3 is cylindrical.
[0026] It can be understood that the float 3 of this embodiment is a hollow structure. According to the material selection of the float 3, the size of the cavity in the middle of the float 3 is calculated. As long as the fuel and water in the fuel tank body 1 can be in a stratified state, the float 3 can make the oil suction filter 4 be located 1-4mm below the oil-water line. In addition, if a fuel with a lower purity is used, the bottom position of the oil suction filter 4 needs to be set at a position closer to the oil-water line, for example: close to 1mm below the oil-water line; to ensure that the proportion of fuel sucked by the oil pump 2 is higher, which is more conducive to the combustion when the engine is started and prevents flameout; if a fuel with a higher purity is used, the bottom of the oil suction filter 4 can be set at a position slightly farther from the oil-water line, for example: close to 4mm below the oil-water line, because the higher the purity of the fuel, the greater the amount of water that can be mixed. The amount of water mixed in this embodiment is a mixture of water and fuel with a volume ratio of 1 / 8-1 / 3.
[0027] The fuel of the present invention can be diesel or gasoline or other combustible oils; the engine is preferably an engine with high recoil force, such as a four-stroke engine. When this type of engine is burned, the proportion of fuel returning to the fuel tank is as high as 90%; it is more conducive to forming a stable turbulence in the fuel tank of the present invention; ensuring that the oil pump continuously sucks a mixture of water and fuel with an appropriate water mixing ratio.
[0028] Preferably, the water selected in the present invention can use a phase change liquid; the phase change liquid has the characteristics of high boiling point and low freezing point, good thermal conductivity and strong stability, and according to different formulas, its boiling point and freezing point can be artificially controlled, and after mixing with fuel, it can ensure higher combustion efficiency.
[0029] like Figure 2As shown, in order to fully burn the mixture of fuel and water to the maximum extent, a receiving groove 11 is provided below the fuel tank body 1 of this embodiment. As the mixture of fuel and water is consumed, the float 3 can enter the receiving groove 11 to lower the height of the oil inlet of the oil pump 2, thereby fully absorbing the mixture of fuel and water in the fuel tank body 1. Preferably, a plurality of overflow guide slopes 12 are formed below the fuel tank body 1 with the opening of the receiving groove 11 as the center toward the side wall of the fuel tank body 1. The height of the overflow guide slope 12 close to the receiving groove 11 is lower than the height close to the side wall of the fuel tank body 1, so that the mixture of fuel and water in the fuel tank body 1 can flow to the position of the receiving groove 11. It is worth noting that a concave ridge 13 is formed between two adjacent overflow guide slopes 12 of this embodiment, and the plurality of concave ridges 13 form a guide spiral toward the opening direction of the receiving groove 11, so that turbulent vortices are more easily formed in the fuel tank body 1, thereby making the fuel and water mixed more fully.
[0030] Preferably, in order to further effectively mix the fuel and water in the fuel tank body 1 and allow the mixture of fuel and water to be fully burned, the end of the return pipe 8 in the fuel tank body 1 is inserted into the receiving groove 11 to ensure that even if only fuel and water are left at the bottom of the fuel tank body 1, the fuel and water can be fully mixed.
[0031] like Figure 1 As shown, a pressure relief valve 10 is also provided between the inlet of the fuel injector 7 and the liquid return pipe 8. After the fuel-water mixture is pressurized by the oil pump 2, the pressure relief valve 10 can prevent excessive fuel-water mixture from being sprayed into the combustion chamber through the fuel injector 7 due to overpressure, thereby ensuring that the excess fuel-water mixture flows back into the fuel tank body 1.
[0032] It is worth noting that Figure 3 As shown, in order to facilitate maintenance, an upper cover 14 is detachably connected to the top of the oil tank body 1 of this embodiment, and the oil delivery pipe 5, the return liquid pipe 8, and the guide rail 9 are all fixedly connected to the upper cover 14. Therefore, when repairing, the upper cover 14 can be removed to pull the oil delivery pipe 5, the return liquid pipe 8, the guide rail 9, the oil pump 2, the oil suction filter 4 and the float 3 out of the oil tank body 1.
[0033] The oil tank of the present invention can circulate and mix fuel and water for supply, and has an ingenious structural design. By arranging a suspended float, the oil suction port of the oil pump can be located at a position below the oil-water delineation line, thereby ensuring that no matter how much fuel and water are left in the oil tank, the engine can simultaneously absorb fuel and water in a suitable proportion when it is started; in addition, after the engine is started, a large amount of the mixture of fuel and water is sprayed into the oil tank body through the return pipe to form turbulence, so as to stir and mix the fuel and water in the oil tank body, so that the oil pump can continuously absorb the mixture of fuel and water and a small amount of the mixture is consumed by the fuel injection nozzle, and the remaining large amount of the mixture is rapidly returned to the oil tank body through the return pipe to continue to stir and mix the fuel and water in the oil tank body, thereby forming a circulating supply.
[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims
1. A fuel tank capable of circulating and mixing fuel and water, characterized in that: The oil pump is arranged in the oil tank body, and a float is arranged below the oil pump. The oil pump is fixedly connected to the float, and the float can carry the oil pump to float up and down in the oil tank body. An oil suction filter is horizontally arranged at the oil inlet of the oil pump, and an oil pipeline is connected above the oil pump, and the oil pipeline is connected to the oil rail of the engine, and the oil rail is connected to the inlet of the engine's fuel injector nozzle, and the inlet of the fuel injector nozzle is also connected to the return liquid pipe, and the return liquid pipe is connected to the inside of the oil tank body. Before the engine is started, the fuel and water in the oil tank body are in a stratified state, and the float can make the bottom of the oil suction filter be located below the oil-water delineation line.
2. A fuel tank capable of circulating and mixing fuel and water as claimed in claim 1, characterized in that: A guide rail is fixedly arranged vertically in the oil tank, and the guide rail is slidably connected to the buoy. Under the buoyancy of water, the buoy can slide up and down relative to the guide rail.
3. A fuel tank capable of circulating and mixing fuel and water as claimed in claim 2, characterized in that: There are two guide rails, which are symmetrically inserted into the buoy to improve the stability of the buoy when it moves.
4. A fuel tank capable of circulating and mixing fuel and water as claimed in claim 2, characterized in that: The float is cylindrical to reduce the impact force on the float in the horizontal direction when the fuel and water mix.
5. The fuel tank capable of circulating and mixing fuel and water as claimed in claim 1, characterized in that: A receiving groove is arranged below the fuel tank body to allow the mixture of fuel and water to be fully burned.
6. A fuel tank capable of circulating and mixing fuel and water as claimed in claim 5, characterized in that: A plurality of overflow guide slopes are formed below the fuel tank body toward the side wall of the fuel tank body with the opening of the receiving groove as the center. The height of the overflow guide slopes close to the receiving groove is lower than the height close to the side wall of the fuel tank body, so that the mixture of fuel and water in the fuel tank body can flow to the position of the receiving groove.
7. A fuel tank capable of circulating and mixing fuel and water as claimed in claim 6, characterized in that: A concave ridge is formed between two adjacent overflow guide slopes, and a plurality of concave ridges form a guide spiral toward the opening direction of the accommodating groove.
8. The fuel tank capable of circulating and mixing fuel and water as claimed in claim 7, characterized in that: The end of the liquid return pipe in the oil tank body is plugged into the receiving groove.
9. A fuel tank capable of circulating and mixing fuel and water as claimed in claim 8, characterized in that: A pressure relief valve is also provided between the inlet of the fuel injection nozzle and the liquid return pipe.
10. The fuel tank capable of circulating and mixing fuel and water as claimed in claim 2, characterized in that: An upper cover is detachably connected to the upper part of the oil tank body, and an oil delivery pipe, a liquid return pipe and a guide rail are all fixedly connected to the upper cover.