Double-filter exhaust and oil supply system

Abstract

The invention discloses a double-filter exhaust and oil supply system, and belongs to a diesel vehicle engine oil supply filtering system, the double-filter exhaust and oil supply system comprises a double-filter exhaust and oil supply system, the double-filter exhaust and oil supply system comprises a double-filter assembly, an oil tank and an engine, the double-filter assembly comprises a main shell, and the main shell is provided with an oil inlet and an oil outlet; a first filter is fixedly installed at the inner bottom of the main shell, a second filter is fixedly installed on one side of the inner top of the main shell, an electric pump is fixedly installed on the other side of the inner top of the main shell, and an exhaust one-way valve is fixedly arranged at the inlet end of an oil-gas mixed fuel oil pipeline of the electric pump. The problem of excessive gas accumulation in the engine can be avoided, the service life of the diesel vehicle engine is guaranteed, the oil suction resistance of the oil delivery pump after the engine is started is reduced, the power effect of the engine is guaranteed, and the use cost of the whole double-filter exhaust and oil supply system is saved.

Description

Technical Field

[0001] The invention relates to a diesel vehicle engine oil supply filtering system, and more particularly to a double-filter exhaust and oil supply system. Background Art

[0002] A filter is a part that filters impurities or gases through filter paper. It usually refers to a car filter, which is an engine part.

[0003] According to different filtering functions, they are divided into: oil filter, fuel filter (gasoline filter, diesel filter, oil-water separator, hydraulic filter), air filter, air conditioning filter, etc. The engine has three filters: air, oil, and fuel, generally called "three filters", plus the air conditioning filter, commonly known as four filters. They are responsible for filtering the lubrication system, the medium in the combustion system, the engine intake system, and the cabin air circulation system.

[0004] Based on the above, the inventors found that:

[0005] When the filter is actually used in exhaust and oil supply, the filter still has some room for improvement in reality:

[0006] ① When the diesel engine is supplied with oil, the commonly used diesel engine relies on the engine's self-priming and the electric pump at the start to force the oil supply and exhaust. In this working mode, the gas of the mixed oil will enter the engine, and as the working time increases, the gas will accumulate too much, thus affecting the working life of the diesel engine;

[0007] ② When the diesel engine is exhausting or supplying fuel, it uses a dual-pump exhaust pump and fuel supply pump to operate. When the engine is working, the exhaust pump works at the same time to discharge the mixed oil back to the fuel tank. At this time, it will cause engine oil suction resistance, which will ultimately affect the power effect of the diesel engine.

[0008] Therefore, in view of this, the existing structure is studied and improved, and a double-filter exhaust and oil supply system is provided, in order to achieve a more practical purpose. Summary of the invention

[0009] 1. Technical issues to be solved

[0010] In view of the problems existing in the prior art, the purpose of the present invention is to provide a dual-filter exhaust and fuel supply system, which can avoid the problem of excessive gas accumulation in the engine, ensure the working life of the diesel vehicle engine, reduce the resistance of the oil pump to suck oil after the engine is started, ensure the power effect of the engine, and save the use cost of the entire dual-filter exhaust and fuel supply system.

[0011] 2. Technical solution

[0012] To solve the above problems, the present invention adopts the following technical solutions.

[0013] A dual-filter exhaust and oil supply system, comprising a dual-filter exhaust and oil supply system, the dual-filter exhaust and oil supply system comprising a dual-filter assembly, a fuel tank and an engine;

[0014] The dual filter assembly includes a main housing, a first filter is fixedly installed on the inner bottom of the main housing, a second filter is fixedly installed on one side of the inner top of the main housing, an electric pump is fixedly installed on the other side of the inner top of the main housing, an exhaust check valve is fixedly arranged on the inlet end of the oil-gas mixed fuel pipeline of the electric pump, a main oil supply check valve is fixedly arranged in the clean oil pipeline of the first filter, and an anti-return oil gas check valve is fixedly arranged on the exhaust outlet of the filter, a filter oil inlet is fixedly arranged on one side of the outer side of the main housing, and is connected to the output port of the fuel tank through the filter oil inlet, an engine oil supply port is fixedly arranged on one side of the outer side of the main housing, and is connected to the engine input port through the engine oil supply port, the engine output port is connected to a return oil pipe, and is connected to the input port of the fuel tank through the return oil pipe, and a filter exhaust outlet is fixedly arranged on the top of the second filter, and the filter exhaust outlet is connected to the return oil pipe through a pipeline.

[0015] Furthermore, the output end of the first filter is connected to an oil-gas mixed fuel pipeline, and the oil-gas mixed fuel pipeline passes through an electric pump and is connected to the input end of the second filter.

[0016] Furthermore, the engine and the electric pump are connected to the same single chip microcomputer through their internal signal units respectively.

[0017] Furthermore, a clean fuel pipeline is connected between the first filter, the second filter and the engine fuel supply port.

[0018] Furthermore, an unfiltered fuel pipeline 1 is provided inside the second filter, and the unfiltered fuel pipeline 1 is isolated from the clean fuel pipeline located inside the second filter by a filter element;

[0019] An unfiltered fuel pipeline 2 is arranged between the first filter and the fuel supply port of the engine. The unfiltered fuel pipeline 2 is isolated from the clean fuel pipeline located inside the first filter by a filter element.

[0020] Furthermore, the inner diameter of the air outlet of the second filter is smaller than the inner diameter of the internal outlet of the filter element of the second filter.

[0021] Further, the clean fuel pipeline between the first filter and the engine fuel supply port is unidirectional;

[0022] The clean fuel pipeline between the second filter and the engine fuel supply port is a one-way flow.

[0023] Furthermore, the first filter and the second filter are both fixed to the inside of the main housing by bolts, and rubber shock-absorbing sealing rings are fixedly attached to the inside of the main housing and to the surrounding sides of the first filter and the second filter.

[0024] 3. Beneficial effects

[0025] Compared with the prior art, the advantages of the present invention are:

[0026] ① In this scheme, the diesel inside the second filter element is discharged into the fuel supply pipe, so that a positive pressure is formed inside the fuel supply pipe, and the engine is easy to start. After the vehicle is running, the fuel supply is sufficient and there is no gas. The rail pressure is stable, the power is improved, and fuel is saved. The fuel supplied by the first filter and the second filter is free of gas, which avoids the problem of excessive gas accumulation in the engine and ensures the working life of the diesel vehicle engine.

[0027] ② In this scheme, when the diesel engine is supplied with oil, an electric pump is used to extract the mixed oil from the first filter into the outside of the filter element of the second filter to form a positive pressure, and then the diesel enters the inside of the filter element and enters the engine oil supply port from the outlet. The gas is discharged from the outlet at the top of the filter and enters the engine oil return port or oil return pipe, which reduces the resistance of the oil pump to suck oil after the engine is started, and ensures the power effect of the engine;

[0028] ③ This solution ensures sufficient oil supply to the entire dual-filter exhaust and fuel supply system by assisting the engine in self-priming. At the same time, an electric pump is used to realize the existing functions, saving the use cost of the entire dual-filter exhaust and fuel supply system. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 The internal planar structure of the dual filter assembly of the present invention is shown in FIG. Figure 1 ;

[0030] Figure 2 The internal planar structure of the dual filter assembly of the present invention is shown in FIG. Figure 2 ;

[0031] Figure 3 The external planar structure of the dual filter assembly of the present invention is shown in FIG. Figure 1 ;

[0032] Figure 4 The external planar structure of the dual filter assembly of the present invention is shown in FIG. Figure 2 ;

[0033] Figure 5 It is a system schematic diagram of the filter exhaust and oil supply system of the present invention during oil supply and exhaust;

[0034] Figure 6 It is a schematic diagram of the dual-filter exhaust and oil supply system of the present invention when the first filter and the second filter are separated;

[0035] Figure 7 It is a schematic diagram of the flow of the exhaust and oil supply system when the double filter of the present invention is working when the first filter is at the top and the second filter is at the bottom.

[0036] Description of the numbers in the figure:

[0037] 1. Double filter assembly;

[0038] 2. Shell

[0039] 3. First filter;

[0040] 4. Second filter;

[0041] 5. Electric pump;

[0042] 6. Exhaust check valve;

[0043] 7. Filter oil inlet;

[0044] 8. Fuel tank;

[0045] 9. Engine fuel supply port;

[0046] 10. Engine;

[0047] 11. Filter exhaust outlet;

[0048] 12. Oil supply check valve;

[0049] 13. Anti-return oil and gas one-way valve. DETAILED DESCRIPTION

[0050] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0051] Embodiment 1:

[0052] See also Figure 1 , 2 , 3, 4, 6, 7, a dual-filter exhaust and fuel supply system, comprising a dual-filter exhaust and fuel supply system, the dual-filter exhaust and fuel supply system comprising a dual-filter assembly 1, a fuel tank 8 and an engine 10;

[0053] The dual filter assembly 1 comprises a main housing 2, a first filter 3 is fixedly mounted on the inner bottom of the main housing 2, a second filter 4 is fixedly mounted on one side of the inner top of the main housing 2, an electric pump 5 is fixedly mounted on the other side of the inner top of the main housing 2, an exhaust check valve 6 is fixedly mounted on the inlet end of the oil-gas mixed fuel pipeline of the electric pump 5, a main oil supply check valve 12 is fixedly mounted in the clean oil pipeline of the first filter 3, an anti-return oil and gas check valve 13 is fixedly mounted on the filter exhaust outlet 11, and the outer end of the main housing 2 is fixedly mounted on the outer end of the main housing 2. A filter oil inlet 7 is fixedly provided on one side of the main body 2, and is connected to the output port of the fuel tank 8 through the filter oil inlet 7. An engine fuel supply port 9 is fixedly provided on the outer side of the main body 2, and is connected to the input port of the engine 10 through the engine fuel supply port 9. The output port of the engine 10 is connected to an oil return pipe, and is connected to the input port of the fuel tank 8 through the oil return pipe. A filter exhaust outlet 11 is fixedly provided on the top end of the second filter 4, and the filter exhaust outlet 11 is connected to the oil return pipe or the fuel tank through a pipeline.

[0054] When the exhaust oil supply system is working, the electric pump 5 draws the mixed oil of the first filter 3 into the outside of the filter element of the second filter 4 and forms a positive pressure. Then the diesel enters the inside of the filter element of the second filter 4 and enters the engine oil supply port 9 from the outlet of the second filter 4. At this time, the gas is discharged from the top air outlet of the second filter 4 and enters the oil return port or oil return pipe of the engine 10. Finally, the fuel supplied by the first filter 3 and the second filter 4 is gas-free, and the engine 10 is assisted to self-prime to ensure sufficient oil supply. At the same time, an electric pump 5 is used to realize the existing function, and the second filter 4 is used for auxiliary filtration to save overall cost.

[0055] Embodiment 2:

[0056] Based on the above-mentioned embodiment 1, further discussion is given.

[0057] See also Figure 1 The output end of the first filter 3 is connected to an oil-gas mixed fuel pipeline, and the oil-gas mixed fuel pipeline passes through an electric pump 5 and is connected to the input end of the second filter 4.

[0058] The fuel containing gas in the first filter 3 is discharged under the action of the electric pump 5, and the discharged mixed fuel enters the cavity of the second filter 4. The gas in the fuel entering the second filter 4 is discharged at the outlet at the top of the cavity and enters the fuel tank 8. Under the action of the filter element resistance, the gas-free fuel enters the interior of the filter element, and the internal outlet is connected to the engine 10 oil supply channel of the first filter 3.

[0059] See also Figure 1 and Figure 4 The engine 10 and the electric pump 5 are connected to the same single chip microcomputer through their internal signal units.

[0060] The single chip microcomputer simultaneously receives and controls the operation of the engine 10 and the electric pump 5. When the engine 10 starts, the electric pump 5 starts to work, a negative pressure is formed inside the first filter 3, and the fuel tank 8 starts to supply oil to the first filter 3. The mixed fuel pumped out by the pump is discharged into the second filter 4, and the fuel at the inner cavity outlet of the second filter 4 enters the oil supply channel of the engine 10, which effectively reduces the difficulty of starting the engine caused by the entire oil supply system.

[0061] See also Figure 1 and Figure 3 A clean fuel pipeline is connected between the first filter 3, the second filter 4 and the engine fuel supply port 9.

[0062] After the engine 10 is started, under the suction of the fuel pump of the engine 10, the negative pressure is formed inside the first filter 3, the main fuel supply check valve 12 opens, and clean fuel enters the main fuel supply channel of the engine 10 without gas.

[0063] See also Figure 2 , an unfiltered fuel pipeline 1 is arranged inside the second filter 4, and the unfiltered fuel pipeline 1 is isolated from the clean fuel pipeline located inside the second filter 4 by a filter element;

[0064] An unfiltered fuel pipeline 2 is arranged between the first filter 3 and the engine fuel supply port 9 , and the unfiltered fuel pipeline 2 is isolated from the clean fuel pipeline located inside the first filter 3 by a filter element.

[0065] When the electric pump 5 and the engine 10 are working at the same time, the unfiltered fuel line 1 and the clean fuel line located inside the second filter 4 are filtered through the filter element, and the unfiltered fuel line 2 and the clean fuel line located inside the first filter 3 pass through the filter element, and the fuel in the second filter 4 is continuously supplied to the fuel supply channel of the engine 10, so the fuel supply is more sufficient, the engine 10 is more powerful, there is no gas in the fuel, and the cleanliness of the fuel reaching the engine 10 is ensured.

[0066] See also Figure 1 The inner diameter of the air outlet of the second filter 4 is smaller than the inner diameter of the internal outlet of the filter element of the second filter 4 .

[0067] When the electric pump 5 discharges the oil-gas mixed fuel in the first filter 3 into the second filter 4, the flow rate is large. Since the air outlet of the second filter 4 is smaller than the internal outlet of the filter element, the total flow rate of the air outlet and the internal outlet is less than the oil supply. Therefore, a positive pressure is formed in the cavity of the second filter 4. Under the positive pressure, the fuel flow rate discharged from the internal oil outlet is fast. When the fuel enters the engine 10 oil supply channel of the first filter 3, the engine 10 is adequately supplied with oil.

[0068] See also Figure 1 and Figure 3, the clean fuel pipeline between the first filter 3 and the engine fuel supply port 9 is a one-way flow;

[0069] The clean fuel pipeline between the second filter 4 and the engine fuel supply port 9 is a one-way flow.

[0070] Through the one-way flow, the backflow of clean fuel is avoided. At this time, there is no gas in the fuel supplied to the engine 10 from the first filter 3 and the second filter 4, and the fuel supply is sufficient, which improves the power of the engine 10 and realizes the function of fuel saving.

[0071] See also Figure 1 The first filter 3 and the second filter 4 are both fixed to the inside of the main housing 2 by bolts, and rubber shock-absorbing sealing rings are fixedly attached to the inside of the main housing 2 and on the surrounding sides of the first filter 3 and the second filter 4.

[0072] The rubber shock-absorbing seal ring is used to reduce the vibration amplitude of the first filter 3 and the second filter 4 during operation, thereby ensuring the stability of the first filter 3 and the second filter 4 during operation. At the same time, when bolts are used for connection, the first filter 3 and the second filter 4 can be used as an integral structure or can be disassembled and used as a split structure, thereby improving the application range of the entire dual filter assembly 1.

[0073] Embodiment 3:

[0074] Based on the above-mentioned Embodiment 1 and Embodiment 2, further discussion is given.

[0075] See also Figure 6 and Figure 7 The electric pump 5 draws the mixed oil from the first filter 3 into the outside of the filter element of the second filter 4 to form a positive pressure, and then the diesel enters the inside of the filter element and enters the engine fuel supply port 9 from the outlet. The gas is discharged from the filter exhaust outlet 11 at the top of the second filter 4 and enters the engine 10 oil return port or oil return pipe.

[0076] The diesel inside the filter element of the second filter 4 is discharged into the fuel supply pipe, so that a positive pressure is formed inside the fuel supply pipe. At this time, the engine 10 is easy to start, and the vehicle is fully supplied with fuel after running, without gas, and the rail pressure is stable, which improves power and saves fuel.

[0077] Embodiment 4:

[0078] See also Figure 5 An oil supply pipeline is added between the oil suction port of the electric pump 5 and the oil tank 8, and the oil supply pipeline is provided with, which further increases the oil supply amount of the second filter 4 and reduces the oil suction resistance of the oil pump of the engine 10.

[0079] The above is only a preferred specific implementation of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and its improved conception within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A dual-filter exhaust and oil supply system, comprising a dual-filter exhaust and oil supply system, characterized in that: The dual filter exhaust and oil supply system comprises a dual filter assembly (1), a fuel tank (8) and an engine (10); the dual filter assembly (1) comprises a main housing (2), a first filter (3) is fixedly mounted on the inner bottom of the main housing (2), a second filter (4) is fixedly mounted on one side of the inner top of the main housing (2), an electric pump (5) is fixedly mounted on the other side of the inner top of the main housing (2), an exhaust check valve (6) is fixedly mounted on the inlet end of the oil-gas mixed fuel pipeline of the electric pump (5), a main oil supply check valve (12) is fixedly mounted in the clean oil pipeline of the first filter (3), and a filter exhaust outlet (11) is fixedly mounted on the filter exhaust outlet (11). An anti-return oil gas one-way valve (13) is fixedly provided, a filter oil inlet (7) is fixedly provided on one side of the outside of the main housing (2), and is connected to the output port of the oil tank (8) through the filter oil inlet (7), an engine oil supply port (9) is fixedly provided on one side of the outside of the main housing (2), and is connected to the input port of the engine (10) through the engine oil supply port (9), the output port of the engine (10) is connected to an oil return pipe, and is connected to the input port of the oil tank (8) through the oil return pipe, and a filter exhaust outlet (11) is fixedly provided at the top end of the second filter (4), and the filter exhaust outlet (11) is connected to the oil return pipe through a pipeline.

2. A dual filter exhaust and oil supply system according to claim 1, characterized in that: The output end of the first filter (3) is connected to an oil-gas mixed fuel pipeline, and the oil-gas mixed fuel pipeline passes through an electric pump (5) and is connected to the input end of the second filter (4).

3. A dual filter exhaust and oil supply system according to claim 1, characterized in that: The engine (10) and the electric pump (5) are connected to the same single chip microcomputer via their internal signal units respectively.

4. A dual filter exhaust and oil supply system according to claim 1, characterized in that: A clean fuel pipeline is connected between the first filter (3), the second filter (4) and the engine fuel supply port (9).

5. A dual filter exhaust and oil supply system according to claim 4, characterized in that: An unfiltered fuel pipeline 1 is arranged inside the second filter (4), and the unfiltered fuel pipeline 1 is isolated from the clean fuel pipeline located inside the second filter (4) by a filter element; an unfiltered fuel pipeline 2 is arranged between the first filter (3) and the engine fuel supply port (9), and the unfiltered fuel pipeline 2 is isolated from the clean fuel pipeline located inside the first filter (3) by a filter element.

6. A dual filter exhaust and oil supply system according to claim 1, characterized in that: The inner diameter of the air outlet of the second filter (4) is smaller than the inner diameter of the internal outlet of the filter element of the second filter (4), and the total flow of the air outlet and the internal outlet is smaller than the total oil supply discharged into the second filter by the electric pump.

7. A dual filter exhaust and oil supply system according to claim 4, characterized in that: The clean fuel pipeline between the first filter (3) and the engine fuel supply port (9) is unidirectional; The clean fuel pipeline between the second filter (4) and the engine fuel supply port (9) is unidirectional.

8. A dual filter exhaust and oil supply system according to claim 1, characterized in that: The first filter (3) and the second filter (4) are both fixed to the inside of the main housing (2) by means of bolts, and rubber shock-absorbing sealing rings are fixedly attached to the inside of the main housing (2) and around the first filter (3) and the second filter (4).

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