Filtering system for low-pressure oil way of diesel engine

Abstract

The utility model discloses a diesel engine low-pressure oil way filtering system, which belongs to the technical field of diesel engine oil ways and comprises an oil tank, a diesel filter assembly and an engine, an oil outlet of the oil tank is connected with a filter oil inlet channel, and diesel oil is guided into the diesel filter assembly through the filter oil inlet channel. Three output ports are formed in the diesel filter assembly; the first output port is connected with an engine oil inlet channel and guides oil into an engine through the engine oil inlet channel, the second output port is connected with an engine oil inlet channel pressure release valve, and the third output port is connected with an exhaust channel and guides oil gas back to an oil tank through the exhaust channel. The oil pumping resistance of the engine can be effectively reduced, sufficient oil supply of the engine is guaranteed, meanwhile, gas contained in combusted oil is filtered out, the influence on power of the engine is reduced, the filtered oil gas can be recycled, and waste of diesel oil is avoided.

Description

Technical Field

[0001] This utility model relates to the field of diesel engine oil circuit technology, and more specifically, to a diesel engine low-pressure oil circuit filtration system. Background Technology

[0002] The primary function of a fuel filter is to remove impurities and moisture from diesel fuel, protecting delicate components such as the fuel pump and fuel injectors from damage. If diesel fuel contains impurities and moisture, they can clog the fuel pump and fuel injectors, leading to abnormal fuel supply and injection, which in turn affects the normal starting and operation of the diesel engine. Therefore, the fuel filter is one of the key components ensuring the stable operation of a diesel engine.

[0003] The original filter works on the principle that when the engine's fuel pump is working, it draws fuel out of the fuel tank through the filter, creating negative pressure inside the filter.

[0004] Then, when oil and gas are separated inside the filter, it can easily cause resistance to the engine's oil intake, which can lead to insufficient fuel supply to the engine. In addition, since the fuel contains gas, it affects the engine's power and also wastes diesel fuel.

[0005] Therefore, in view of this, we have studied and improved the existing structure to provide a low-pressure oil circuit filtration system for diesel engines, in order to achieve a more practical purpose. Utility Model Content

[0006] 1. Technical problems to be solved

[0007] In view of the problems existing in the prior art, the purpose of this utility model is to provide a low-pressure oil circuit filtration system for diesel engines. It can effectively reduce the oil pumping resistance of the engine, ensure sufficient oil supply to the engine, filter out the gas contained in the burning oil, reduce the impact on the engine power, and the filtered oil and gas can be recovered to avoid the waste of diesel fuel.

[0008] 2. Technical Solution

[0009] To solve the above problems, the present invention adopts the following technical solution.

[0010] A diesel engine low-pressure oil circuit filtration system, the filtration system consists of an oil tank, a diesel filter assembly and an engine. The oil outlet of the oil tank is connected to the filter inlet channel, and diesel fuel is introduced into the diesel filter assembly through the filter inlet channel. The diesel filter assembly is provided with three outlet ports.

[0011] The first output port is connected to the engine oil inlet channel, and oil is introduced into the engine through the engine oil inlet channel. The second output port is connected to the engine oil inlet channel pressure relief valve. The third output port is connected to the exhaust channel, and oil vapor is guided back to the oil tank through the exhaust channel.

[0012] The engine's output port is connected to an engine oil return channel. The engine oil return channel and the downstream end of the engine oil inlet channel pressure relief valve combine to form a primary flow path. The third output port is connected to an exhaust channel and the primary flow path to combine the flow again, and then connected to the inlet of the fuel tank.

[0013] Furthermore, an exhaust pump is provided on one side of the interior of the diesel filter assembly, and the exhaust passage is connected to the exhaust port of the exhaust pump.

[0014] Furthermore, the diesel filter assembly is provided with a gas inlet, which is directly connected to the exhaust pump, and an exhaust passage check valve is connected to the gas inlet.

[0015] Furthermore, an oil supply pump is provided on one side of the interior of the diesel filter assembly.

[0016] Furthermore, the diesel filter assembly is provided with a filter clean oil inlet, and the filter clean oil inlet is provided with two branch ports;

[0017] One of the branch ports is fixedly connected to the oil supply pump inlet channel, and one end of the oil supply pump inlet channel is connected to the oil supply pump inlet.

[0018] Furthermore, another branch port of the filter clean oil inlet is fixedly installed with a filter oil outlet check valve, and this branch port is connected to the engine oil inlet channel via the filter oil outlet check valve.

[0019] Furthermore, the oil outlet of the oil supply pump is fixedly connected to an oil supply pump outlet channel, and one end of the oil supply pump outlet channel collects flow at the downstream port of the filter outlet check valve.

[0020] 3. Beneficial effects

[0021] Compared with existing technologies, the advantages of this utility model are:

[0022] This solution supplies diesel fuel through a fuel tank and filters and separates the diesel fuel from the air using a fuel filter assembly. An exhaust pump prevents gaseous fuel from entering the engine, while a continuous fuel pump ensures sufficient fuel supply. A pressure relief valve is installed on the engine's fuel supply line to prevent over-fueling, which would result in poor fuel economy and reduced power. Finally, a filter element is installed within the fuel filter assembly to ensure effective fuel-air separation.

[0023] In summary, this device can effectively reduce engine oil suction resistance, ensure sufficient engine oil supply, filter out gases contained in the burning oil, reduce the impact on engine power, and the filtered oil and gas can be recovered, avoiding diesel waste. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the oil circuit of the low-pressure oil circuit filtration system for diesel engines in this utility model. Figure 1 ;

[0025] Figure 2 This is a schematic diagram of the oil circuit of the low-pressure oil circuit filtration system for diesel engines in this utility model. Figure 2 .

[0026] Explanation of the labels in the diagram:

[0027] 1. Oil inlet channel for filter; 2. Clean oil inlet for filter; 3. Oil inlet channel for oil supply pump; 4. Oil supply pump; 5. Oil outlet check valve for filter; 6. Oil outlet channel for oil supply pump; 7. Oil inlet channel for engine; 8. Gas inlet; 9. Check valve for exhaust channel; 10. Exhaust pump; 11. Pressure relief valve for engine oil inlet channel; 12. Exhaust channel; 13. Oil return channel for engine. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0029] Example:

[0030] Please see Figure 1 - Figure 2 The diesel engine low-pressure oil circuit filtration system consists of an oil tank, a diesel filter assembly, and an engine. The oil outlet of the oil tank is connected to the filter inlet channel 1, and diesel fuel is introduced into the diesel filter assembly through the filter inlet channel 1. The diesel filter assembly is equipped with three outlet ports.

[0031] The first output port is connected to the engine oil inlet channel 7, and oil is introduced into the engine through the engine oil inlet channel 7. The second output port is connected to the engine oil inlet channel pressure relief valve 11. The third output port is connected to the exhaust channel 12, and oil vapor is guided back to the oil tank through the exhaust channel 12.

[0032] The engine output port is connected to the engine return oil passage 13. The engine return oil passage 13 and the downstream end of the engine inlet oil passage pressure relief valve 11 combine to form a primary flow path. The third output port is connected to the exhaust passage 12 and the primary flow path combine again, and is connected to the inlet of the fuel tank.

[0033] Specifically, an exhaust pump 10 is installed on one side of the interior of the diesel filter assembly, and an exhaust passage 12 is connected to the exhaust port of the exhaust pump 10.

[0034] The exhaust pump 10 discharges gas from the exhaust passage 12 to prevent gaseous fuel from entering the engine.

[0035] Specifically, the diesel filter assembly is provided with a gas inlet 8, which is directly connected to the exhaust pump 10, and an exhaust passage check valve 9 is connected to the gas inlet 8.

[0036] The one-way valve 9 in the exhaust channel controls the direction of gas flow, ensuring that gas enters from the gas inlet 8 and is discharged from the exhaust channel 12 under the action of the exhaust pump 10, thus preventing gas backflow.

[0037] Specifically, a fuel pump 4 is installed on one side of the internal part of the diesel filter assembly.

[0038] Specifically, the diesel filter assembly is equipped with a filter clean oil inlet 2, which has two branch ports;

[0039] One of the branch ports is fixedly connected to the oil supply pump inlet channel 3, and one end of the oil supply pump inlet channel 3 is connected to the oil supply pump 4 inlet.

[0040] Specifically, another branch port of the filter clean oil inlet 2 is fixedly installed with a filter oil outlet check valve 5, and this branch port is connected to the engine oil inlet channel 7 via the filter oil outlet check valve 5.

[0041] Specifically, the oil outlet of the oil supply pump 4 is fixedly connected to the oil supply pump outlet channel 6, and one end of the oil supply pump outlet channel 6 collects the flow at the downstream port of the filter outlet check valve 5.

[0042] Working principle:

[0043] Diesel fuel is stored in the fuel tank, and the diesel fuel in the fuel tank flows into the diesel filter assembly through the filter inlet channel 1.

[0044] In the diesel filter assembly, the direction of gas flow is controlled by the exhaust channel check valve 9, ensuring that gas enters from the gas inlet 8 and is then discharged from the exhaust channel 12 under the action of the exhaust pump 10, thus preventing gas backflow.

[0045] Clean oil is introduced through the filter clean oil inlet 2, and the clean oil enters the oil supply pump 4 through the oil supply pump inlet channel 3. The oil supply pump 4 pumps out through the oil supply pump outlet channel 6 and collects at the downstream port of the filter outlet check valve 5. After collection, part of the diesel fuel enters the engine through the engine oil inlet channel 7, and the other part enters the engine through the engine oil inlet channel pressure relief valve 11.

[0046] The oil discharged from the engine is discharged through the engine return oil passage 13, and merges with the oil discharged from the engine inlet oil passage pressure relief valve 11 and the oil vapor discharged from the exhaust passage 12, and finally flows into the oil tank.

[0047] This device can effectively reduce the oil pumping resistance of the engine, ensure sufficient oil supply to the engine, filter out the gas contained in the burning oil, reduce the impact on the engine power, and the filtered oil and gas can be recovered to avoid the waste of diesel fuel.

[0048] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A low-pressure fuel line filtration system for a diesel engine, characterized in that: The filtration system consists of a fuel tank, a diesel filter assembly, and an engine. The fuel tank outlet is connected to a filter inlet channel (1), and diesel fuel is introduced into the diesel filter assembly through the filter inlet channel (1). The diesel filter assembly is provided with three outlet ports. The first output port is connected to the engine oil inlet channel (7) and oil is introduced into the engine through the engine oil inlet channel (7). The second output port is connected to the engine oil inlet channel pressure relief valve (11). The third output port is connected to the exhaust channel (12) and oil vapor is guided back to the oil tank through the exhaust channel (12). The engine output port is connected to the engine return oil passage (13). The engine return oil passage (13) and the downstream end of the engine inlet oil passage pressure relief valve (11) combine to form a primary flow path. The third output port is connected to the exhaust passage (12) and the primary flow path combine again, and is connected to the inlet of the oil tank.

2. The diesel engine low-pressure oil circuit filtration system according to claim 1, characterized in that: An exhaust pump (10) is provided on one side of the interior of the diesel filter assembly, and the exhaust passage (12) is connected to the exhaust port of the exhaust pump (10).

3. The diesel engine low-pressure oil circuit filtration system according to claim 2, characterized in that: The diesel filter assembly is provided with a gas inlet (8), which is directly connected to the exhaust pump (10), and the gas inlet (8) is connected to an exhaust channel check valve (9).

4. The diesel engine low-pressure oil circuit filtration system according to claim 1, characterized in that: A fuel pump (4) is installed on one side of the interior of the diesel filter assembly.

5. The diesel engine low-pressure oil circuit filtration system according to claim 4, characterized in that: The diesel filter assembly is provided with a filter clean oil inlet (2), and the filter clean oil inlet (2) is provided with two branch ports; One of the branch ports is fixedly connected to the oil supply pump inlet channel (3), and one end of the oil supply pump inlet channel (3) is connected to the oil supply pump (4) inlet.

6. The diesel engine low-pressure oil circuit filtration system according to claim 5, characterized in that: Another branch port of the filter clean oil inlet (2) is fixedly installed with a filter oil outlet check valve (5), and the branch port is connected to the engine oil inlet channel (7) via the filter oil outlet check valve (5).

7. The diesel engine low-pressure oil circuit filtration system according to claim 6, characterized in that: The oil outlet of the oil supply pump (4) is fixedly connected to the oil supply pump outlet channel (6), and one end of the oil supply pump outlet channel (6) collects the flow at the downstream port of the filter outlet check valve (5).

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