CN216691293U - Diesel emulsion promotion system - Google Patents
Diesel emulsion promotion system Download PDFInfo
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- CN216691293U CN216691293U CN202122452899.9U CN202122452899U CN216691293U CN 216691293 U CN216691293 U CN 216691293U CN 202122452899 U CN202122452899 U CN 202122452899U CN 216691293 U CN216691293 U CN 216691293U
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- 239000000839 emulsion Substances 0.000 title claims abstract description 96
- 239000003921 oil Substances 0.000 claims abstract description 173
- 238000010438 heat treatment Methods 0.000 claims abstract description 16
- 238000005485 electric heating Methods 0.000 claims abstract description 12
- 239000000295 fuel oil Substances 0.000 claims abstract 2
- 239000000446 fuel Substances 0.000 claims description 46
- 239000007788 liquid Substances 0.000 claims description 13
- 239000000498 cooling water Substances 0.000 claims description 12
- 239000002283 diesel fuel Substances 0.000 claims description 11
- 238000009423 ventilation Methods 0.000 claims description 9
- 238000001556 precipitation Methods 0.000 claims description 7
- 239000010705 motor oil Substances 0.000 claims description 6
- 230000008676 import Effects 0.000 claims 2
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 5
- 230000001133 acceleration Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000011049 filling Methods 0.000 description 3
- 239000002828 fuel tank Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000001376 precipitating effect Effects 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
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Abstract
The utility model relates to a diesel emulsion forcing system, which comprises a diesel emulsion tank, an oil return tank, an oil supply pump and a heat exchanger, wherein the diesel emulsion tank is communicated with an oil inlet of the oil return tank; the engine also comprises a three-way valve arranged on the oil return pipe and a fuel oil circulation bypass before the engine is started; one end of the circulation bypass is communicated with the three-way valve, and the other end of the circulation bypass is communicated with an oil supply pipe behind the heat exchanger and in front of the engine; the heat exchanger comprises an electric heating device which is at least used for heating the diesel emulsion in the oil supply pump, the heat exchanger, the oil return tank and the pipeline before the engine is started; the diesel emulsion case is internally provided with a stirrer. The utility model is beneficial to the circulation and heating of the diesel emulsion before the engine is started, and can realize the smokeless engine starting of the diesel emulsion.
Description
Technical Field
The present invention relates to the field of diesel engine technology, and in particular to a diesel emulsion forcing system for use in a vehicle fuel system.
Background
The emulsified oil or diesel oil emulsion is an emulsion with diesel oil as a continuous phase and water as a dispersed phase. The working principle of the emulsified oil used for the engine is as follows: the emulsified oil enters an engine cylinder to be secondarily atomized, so that oil particles become finer, and the oil particles are fully mixed with oxygen and completely combusted. Diesel emulsions contribute to the following problems during use of the system:
1. diesel emulsions require preheating before use to avoid white smoke emissions. White smoke basically means incomplete combustion and the diesel emulsion in the fuel system must be heated to the required level in its entirety to eliminate this problem. The existing solution is to start the engine with diesel oil, and supply diesel oil emulsion to the engine only when the temperature value of the engine reaches the set temperature. The method needs to prepare a diesel tank and an oil supply pipeline thereof and diesel emulsion, namely the oil supply pipeline thereof, simultaneously, so that the vehicle-mounted space, equipment and cost are increased.
2. In addition to the preheating requirement, the diesel emulsion properties depend on its quality. Diesel emulsions are inherently unstable and their aqueous dispersion sinks over time, which adversely affects engine performance. For example, poor uniformity may adversely affect engine performance, such as engine low speed instability, increased fuel consumption, increased NOx, PM, HC, and CO emissions.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the present invention is to provide a diesel emulsion promotion system for circulating and heating diesel emulsion before the engine is started to realize smokeless engine start of diesel emulsion, aiming at the above defects of the prior art.
The technical scheme adopted by the utility model for solving the technical problems is as follows:
the diesel emulsion forcing system comprises a diesel emulsion tank, an oil return tank, an oil supply pump and a heat exchanger, wherein the diesel emulsion tank is communicated with an oil inlet of the oil return tank, the heat exchanger is communicated with a cooling water outlet of an engine through a first cooling water pipe, the heat exchanger is communicated with a radiator of the engine through a second cooling water pipe, an oil return inlet of the oil return tank is communicated with an oil return outlet of the engine through an oil return pipe, an inlet of the oil supply pump is communicated with an oil outlet of the oil return tank, an outlet of the oil supply pump is communicated with the heat exchanger, and the diesel emulsion forcing system further comprises a three-way valve arranged on the oil return pipe and a fuel circulation bypass before the engine is started; one end of the fuel circulation bypass before the engine is started is communicated with the three-way valve, and the other end of the fuel circulation bypass is communicated with an oil supply pipe behind the heat exchanger and in front of the engine; the heat exchanger comprises an electric heating device which is at least used for heating the diesel emulsion in the oil supply pump, the heat exchanger, the oil return tank and the pipeline before the engine is started; the diesel emulsion tank is internally provided with a stirrer.
Further:
the agitator includes an upper helical agitator and a lower helical agitator that rotate in opposite directions.
An oil inlet pipe in a reverse L shape is arranged in the oil return tank, the transverse section of the oil inlet pipe is communicated with an oil inlet of the oil return tank, and an outlet of the vertical section of the oil inlet pipe is close to the top of the oil return tank and is higher than the liquid level of the oil return tank; the oil return tank is characterized in that an oil return inlet of the oil return tank is arranged at the position close to the top of the oil return tank and higher than the liquid level of the oil return tank, an outlet of the oil return tank is arranged at the bottom, and a ventilation cut-off valve is arranged at the top of the oil return tank.
And pressure control bypasses which are connected with the oil supply pump in parallel are arranged at two ends of the oil supply pump.
An auxiliary oil tank is arranged between the heat exchanger and the engine oil supply pump and close to the engine oil supply pump, and a ventilation cut-off valve is arranged at the top of the auxiliary oil tank.
And a flow control pipe for changing the flow by changing the inner diameter of the pipe is arranged between the oil return pipe and the oil return outlet of the engine.
Compared with the prior art, the utility model has the following beneficial effects:
1. the electric heating auxiliary heat exchanger is beneficial to the circulation and heating of the diesel emulsion before the engine is started, and the smokeless engine starting of the diesel emulsion can be realized.
2. The electrical heating facilitates remote start to preheat the diesel emulsion, and remote start can save fuel preheating time for the user.
3. The diesel emulsion incasement is equipped with to have and is the rotatory last helical agitator and the helical agitator down of opposite direction, thereby can reach high-efficient mixed effect and keep the homogeneity of diesel emulsion.
Drawings
FIG. 1 is a schematic diagram of the structure of an embodiment of a diesel emulsion precipitation system of the present invention;
FIG. 2 is a schematic diagram of the construction of an electrically heated auxiliary heat exchanger of the diesel emulsion precipitation system of the present invention;
FIG. 3 is a schematic view of the internal workings of the diesel emulsion tank of the diesel emulsion promotion system of the present invention;
fig. 4 is a schematic diagram of the structure of the return tank of the diesel emulsion promotion system of the present invention.
Reference numerals
Detailed Description
The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
As shown in fig. 1, a diesel emulsion promotion system includes a diesel emulsion tank T1, an oil return tank T2, a fuel supply pump P1, a heat exchanger T4, an auxiliary oil tank T3 and a three-way valve V2.
As shown in fig. 1, the heat exchanger T4 communicates with the cooling water outlet of the engine via a first cooling line EC1 and with the radiator of the engine via a second cooling line EC 2. When the engine works, heat generated by the engine is released into the cooling water of the heat exchanger T4 through the first cooling pipeline EC1, then the cooling water flows through the heat exchanger T4 for heating the emulsified oil, and the cooling water heated by the emulsified oil is sent to the engine radiator through the second cooling pipeline EC2 for absorbing the heat generated by the engine again, and so on.
As shown in fig. 2, the heat exchanger T4 includes a container 27, a fuel inlet 21, a fuel outlet 22, a water filling port 23, a cooling water inlet 24, a cooling water outlet 25 and an electric heating device 26 disposed on the cavity, and the electric heating device 26 includes an electric heating pipe and has an electric heating auxiliary function. In this embodiment, a spiral oil pipe is arranged inside the heat exchanger T4, and the electric heating pipe is coaxially arranged with the cavity. The heat exchanger T4 is respectively connected with an oil supply pump P1 and an auxiliary oil tank T3, the oil supply pump P1 is also connected with a bottom outlet of an oil return tank T2, and an oil return inlet of the oil return tank is respectively connected with the auxiliary oil tank T3 and the engine through a three-way valve V2. Before the engine is started, the three-way valve V2 is connected with the auxiliary oil tank T3 and disconnected from the engine, and the heat exchanger T4 and the fuel supply pump P1 are started for circulating and heating the diesel oil emulsion. The heat exchanger may be used to treat dirty engine cooling water that may clog a standard heat exchanger. Its high cooling water holding capacity provides better heat retention capability, which together with electrical heating helps to provide consistent diesel emulsion heating to ensure optimum engine performance.
The heat exchanger T4 has an electric heating auxiliary function and has the following technical effects:
1. the electrically heated auxiliary heat exchanger facilitates circulation and heating of the diesel emulsion prior to engine start to achieve smokeless engine start of the diesel emulsion.
2. The electrical heating facilitates remote start to preheat the diesel emulsion, and remote start can save fuel preheating time for the user.
3. Additional heating of the diesel emulsion may also be provided if desired, such as in a lower temperature environment.
4. It is not necessary to start the engine using diesel oil, and therefore a diesel oil tank is not required for this purpose.
Before the diesel emulsion contributes to the starting of the system, the heating of the diesel emulsion comprises the following steps:
1. remotely starting the circulation and preheating of the diesel emulsion;
2. opening fuel return valve V2 for pre-starting the fuel line cycle through bypass line SL 4;
3. turning on an electric heater of the heat exchanger;
4. opening the agitator of the diesel emulsion tank, preferably homogenizing the diesel emulsion for at least 5 minutes prior to use;
5. the cycle duration is set.
As shown in fig. 1, an inlet of the oil supply pump P1 is communicated with a bottom outlet of the oil return tank T2 through an oil supply pipe, and an outlet of the oil supply pump P1 is communicated with the heat exchanger T4 through an oil supply pipe. And pressure control Bypasses (BPL) which are connected with the oil supply pump in parallel are arranged at two ends of the oil supply pump. The fuel feed pump P1 is provided with a pressure control bypass BPL in parallel with it, which has the following effects:
1. constant control of the supply line is facilitated by using a pressure control bypass BPL with a smaller or larger internal diameter. A pressure control bypass BPL, such as a smaller diameter, will increase the fuel line pressure.
2. A constant supply line pressure can be provided regardless of the changing engine fuel requirements.
3. This pressure control bypass BPL may also supply oil to the engine if the supply pump P1 fails. This is an important safety feature because a flameout engine can be life and property threatening.
Due to the inherent instability of diesel emulsions, the dispersed phase tends to settle and delaminate during transport and storage. In order to ensure the quality of the diesel emulsion, as shown in fig. 3, a stirrer a including an upper helical stirrer 31 and a lower helical stirrer 32 is provided in the diesel emulsion tank T1, and the helical stirrers rotate in opposite directions. The stirrer is arranged in the diesel emulsion tank T1, the structure is simple, and the vehicle-mounted space, equipment and cost can be saved.
In some embodiments, the diesel emulsion tank T1 may be configured with a level indicator to inform the user whether the diesel emulsion is full.
As shown in fig. 1, the inlet of the return tank T2 communicates with the diesel emulsion tank T1 through a first filter F1 and a two-way valve V1, and fuel from the diesel emulsion tank T1 flows into the diesel emulsion tank T2 through the SL1 until the vessel pressure is equalized. The outlet at the lower part of the oil return tank T2 is communicated with an oil supply pump P1, and the oil return inlet is communicated with the engine through a three-way valve.
As shown in fig. 4, an oil inlet pipe 42 in a reverse L shape is arranged inside the oil return tank T2, a transverse section of the oil inlet pipe is communicated with an oil inlet 41 of the oil return tank T2, and an outlet of a vertical section of the oil inlet pipe is close to the top of the oil return tank and is higher than the liquid level 45 of the oil return tank; an oil return inlet 44 of the oil return tank T2 is arranged at the position close to the top of the oil return tank and higher than the liquid level 45 of the oil return tank, an oil outlet 43 of the oil return tank is arranged at the bottom of the oil return tank, and a ventilation cut-off valve D is arranged at the top of the oil return tank. And a fuel pipeline SL1 connected with the diesel emulsion tank T1 is connected with an oil inlet 41 in an oil return tank T2. The provision of the vertical section of the inlet pipe 41 helps to prevent fuel from being siphoned into the diesel emulsion tank T1 when the diesel emulsion tank T1 is in the lower position. The oil return tank T2 isolates the hot engine return oil from the cold diesel emulsion in T1. This isolation function ensures the stability of the fuel in the diesel tank T1.
A vent shut-off valve D at the top of the return tank T2 helps control the liquid level in the vessel. When the liquid level reaches a predetermined level, it is turned off.
The operation mechanism of the oil return tank T2 is as follows:
1. an oil outlet 43 of the oil return tank T2 is connected to an inlet of the feed pump P1 through a fuel line SL 2. When the supply pump P1 operates, a negative pressure is generated in the return tank T2. The negative pressure will cause fuel to be drawn from the diesel emulsion tank T1 back into the fuel tank T2 through the fuel line SL 1.
2. Fuel suction is promoted using tank underpressure. The delivery amount of the supply pump P1 minus the engine fuel demand is equal to the amount of return oil flowing into the return oil tank T2. This difference creates a negative pressure in the return tank T2. New fuel is drawn from the diesel emulsion tank T1 to balance this negative pressure. In view of the constant fluctuation of the fuel demand of the engine, the method is an efficient and reliable fuel supply method.
3. When the diesel emulsion tank T1 is located lower than the fuel return tank T2, the vertical fuel inlet pipe 2 prevents fuel from being siphoned to the diesel emulsion tank T1.
4. The engine return oil inlet is located near the top of the return oil tank T2 and above the oil tank level to prevent the communicating vessel effect.
The top of the oil return tank T2 is provided with a ventilation cut-off valve D, which is convenient for controlling the liquid level in the container, and the ventilation cut-off valve D is opened during filling to allow air to escape. Once the predetermined level is reached, the vent shut-off valve D should be closed.
Gravity filling may be performed by lifting the diesel emulsion tank T1 to a height above the return tank T2 and vice versa.
As shown in fig. 1, the auxiliary oil tank T3 is provided near the engine oil supply pump P2. The purpose of the auxiliary oil tank T3 is to solve the problem of engine acceleration caused by the high viscosity of the diesel emulsion. It acts as a local fuel tank providing the additional fuel needed for rapid acceleration of the engine. Without this function, the driver would experience a significant acceleration delay. This also helps to reduce the size of the fuel line.
The top of the auxiliary oil tank T3 is provided with a ventilation cut-off valve, and when the auxiliary oil tank T3 is full, the ventilation cut-off valve is closed.
As shown in fig. 1, the diesel emulsion precipitating method based on the above diesel emulsion precipitating system includes the following steps:
➀ before the engine is started, the three-way valve V2 is controlled to be communicated with the fuel circulation bypass SL4 before the engine is started, an electric heating device and an oil supply pump of a heat exchanger T4 are started, and diesel oil emulsion in the oil supply pump P1, the heat exchanger T4, a filter F2, an auxiliary oil tank T3, an oil return tank T2, an oil supply pipe SL2, an oil supply pipe SL3, the fuel circulation bypass SL4 before the engine is started and an oil return pipe RFL is circulated and heated;
➁ at the same time, turning on the stirrer in the diesel emulsion tank T1, and stirring and mixing the diesel emulsion in the diesel emulsion tank by the stirrer;
➂, when the set time is passed, the three-way valve V2 is switched to be communicated with a large pump P3 of the engine, the engine is started, the oil return tank T2 supplies diesel emulsion to the engine through an oil supply pump P1, a heat exchanger T4, a filter F2 and an auxiliary oil tank T3, and meanwhile, the oil return of the engine flows to an oil return tank T2 through an oil return pipe RFL; if negative pressure is generated in the oil return tank T2, the oil return tank T2 sucks diesel emulsion from the diesel emulsion tank T1 under the action of the negative pressure to supplement oil.
In step ➀, the three-way valve V2 can be remotely controlled to communicate with the fuel circulation bypass SL4 before the engine is started, and the electric heating device and the fuel supply pump of the heat exchanger T4 can be remotely started, so that the fuel preheating time can be saved for users. For example, before the automobile door needs to be driven, the diesel emulsion can be remotely started at home for circulation and heating, and when a user goes to a garage, the diesel emulsion is well preheated, and the engine can be directly started to start without waiting.
The upper helical agitator 31 of the agitator causes the surrounding liquid to be drawn downwards, generating a high energy downward thrust flow 33; the lower helical agitator 32 causes the surrounding liquid to be drawn upward, creating a high energy upward thrust flow 34; the downward thrust flow and the upward thrust flow are subjected to high-energy collision mixing in the middle, so that the high-efficiency mixing effect is achieved, and the uniformity of the diesel emulsion is kept.
The diesel emulsion sucked by the oil return tank T2 from the diesel emulsion tank T1 flows into the oil return tank T2 through the top outlet of the vertical section of the oil inlet pipe which is higher than the liquid level of the oil return tank, the return oil of the engine flows into the oil return tank through the return oil inlet which is higher than the liquid level of the oil return tank, and the oil return tank supplies the diesel emulsion to the engine through the bottom outlet of the oil return tank. A constant supply line pressure is provided by using a pressure control bypass BPL in parallel with the supply pump having a smaller or larger inner diameter relative to the supply line SL 2. The additional fuel required for rapid acceleration of the engine is provided by the auxiliary fuel tank T3.
Since diesel emulsions are more viscous than diesel, higher inlet oil pressures are required to ensure adequate fuel intake into the plunger pump, with resistance to control inlet oil pressure. The inner diameter of a flow control pipe C which is required to be arranged between an oil return pipe RFL and an oil return outlet of a large pump P3 of the engine can be calculated according to the oil consumption of different engines in unit time, and the resistance is improved by controlling the inner diameter of the flow control pipe, so that the oil inlet pressure is improved. In some embodiments, a flow control tube may be installed in a short section of the conduit between the return conduit RFL and the return outlet of the engine large pump P3 to reduce the inner diameter of the conduit for flow control. In other embodiments, a connector of suitable internal diameter may be used as the flow control tube.
It should be understood that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same, and those skilled in the art can modify the technical solutions described in the above embodiments, or make equivalent substitutions for some technical features; and such modifications and substitutions are intended to be included within the scope of the appended claims.
Claims (6)
1. The utility model provides a diesel oil emulsion settling system, includes diesel oil emulsion case, oil return tank, fuel feeding pump and heat exchanger, diesel oil emulsion case and oil return tank's oil inlet intercommunication, the heat exchanger is through the cooling water export intercommunication of first condenser tube and engine, and this heat exchanger passes through the radiator intercommunication of second condenser tube and engine, oil return tank's oil return import is through returning oil pipe and engine oil return export intercommunication, fuel feeding pump's import and oil-out intercommunication of oil return tank, fuel feeding pump's export and heat exchanger intercommunication, its characterized in that: the engine also comprises a three-way valve arranged on the oil return pipe and a fuel oil circulation bypass before the engine is started; one end of the fuel circulation bypass before the engine is started is communicated with the three-way valve, and the other end of the fuel circulation bypass is communicated with an oil supply pipe behind the heat exchanger and in front of the engine; the heat exchanger comprises an electric heating device which is at least used for heating the diesel emulsion in the oil supply pump, the heat exchanger, the oil return tank and the pipeline before the engine is started; the diesel emulsion tank is internally provided with a stirrer.
2. A diesel emulsion precipitation facilitating system as claimed in claim 1, wherein: the agitator includes an upper helical agitator and a lower helical agitator that rotate in opposite directions.
3. A diesel emulsion precipitation facilitating system as claimed in claim 1, wherein: an oil inlet pipe in a reverse L shape is arranged in the oil return tank, the transverse section of the oil inlet pipe is communicated with an oil inlet of the oil return tank, and an outlet of the vertical section of the oil inlet pipe is close to the top of the oil return tank and is higher than the liquid level of the oil return tank; the oil return tank is characterized in that an oil return inlet of the oil return tank is arranged at the position close to the top of the oil return tank and higher than the liquid level of the oil return tank, an outlet of the oil return tank is arranged at the bottom, and a ventilation cut-off valve is arranged at the top of the oil return tank.
4. A diesel emulsion precipitation facilitating system as claimed in claim 1, wherein: and pressure control bypasses which are connected with the oil supply pump in parallel are arranged at two ends of the oil supply pump.
5. A diesel emulsion precipitation facilitating system as claimed in claim 1, wherein: an auxiliary oil tank is arranged between the heat exchanger and the engine oil supply pump and close to the engine oil supply pump, and a ventilation cut-off valve is arranged at the top of the auxiliary oil tank.
6. A diesel emulsion precipitation facilitating system as claimed in claim 1, wherein: and a flow control pipe for changing the flow by changing the inner diameter of the pipe is arranged between the oil return pipe and the oil return outlet of the engine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122452899.9U CN216691293U (en) | 2021-10-12 | 2021-10-12 | Diesel emulsion promotion system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122452899.9U CN216691293U (en) | 2021-10-12 | 2021-10-12 | Diesel emulsion promotion system |
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| Publication Number | Publication Date |
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| CN216691293U true CN216691293U (en) | 2022-06-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115962076A (en) * | 2021-10-12 | 2023-04-14 | 深圳洛喀奔化工科技有限公司 | Diesel emulsion promotion system and method |
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2021
- 2021-10-12 CN CN202122452899.9U patent/CN216691293U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115962076A (en) * | 2021-10-12 | 2023-04-14 | 深圳洛喀奔化工科技有限公司 | Diesel emulsion promotion system and method |
| WO2023060984A1 (en) * | 2021-10-12 | 2023-04-20 | 深圳洛喀奔化工科技有限公司 | Diesel oil emulsion enabling system and method |
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